* bb-reorder.c (emit_jump_to_block_after): Protect use of HAVE_return.

[pf3gnuchains/gcc-fork.git] / gcc / ChangeLog

2000-05-30  Richard Henderson  <rth@cygnus.com>

        * bb-reorder.c (emit_jump_to_block_after): Protect use of HAVE_return.

2000-05-30  Bruce Korb  <bkorb@gnu.org>

        * fixinc/tests/*:  Added expected result files for fixinc's make check
        * fixinc/fixfixes(char_macro_*_fix): Restore original algorithm

2000-05-30  Richard Henderson  <rth@cygnus.com>

        * config/alpha/alpha.md (*setne_internal): Use match_operator
        instead of working down from insn.

2000-05-30  Kaveh R. Ghazi  <ghazi@caip.rutgers.edu>

        * invoke.texi (-Wtraditional): Update WRT function macros.

Tue May 30 09:57:32 2000  Philippe De Muyter  <phdm@macqel.be>

        * except.c (free_exception_table): Do not free NULL.

2000-05-29  Zack Weinberg  <zack@wolery.cumb.org>

        * cpplib.c (do_if): Don't save and restore only_seen_white here.
        * cppexp.c (_cpp_parse_expr): Save and restore only_seen_white
        and skipping here.

2000-05-29  Richard Earnshaw (rearnsha@arm.com)

        * flow.c (mark_used_reg): If a register is unconditionally live, 
        remove any conditional death information.

2000-05-29  Richard Henderson  <rth@cygnus.com>

        * final.c (current_output_insn): New.
        (final_scan_insn): Set it.
        * output.h: Declare it.

2000-05-29  Richard Henderson  <rth@cygnus.com>

        * stor-layout.c (finalize_record_size): Fix typo.

        * jump.c (redirect_jump): Don't emit NOTE_INSN_FUNCTION_END
        if nlabel is null.

2000-05-29  Zack Weinberg  <zack@wolery.cumb.org>

        * cpplib.h (cpp_reader): Remove if_stack.  Change
        potential_control_macro to a cpp_hashnode *.  Add skipping flag.
        * cpphash.h (struct ihash): Change control_macro to a
        cpp_hashnode * and shorten name to cmacro.
        Add NEVER_REINCLUDE constant.

        * cppfiles.c (redundant_include_p): Drop cpp_reader argument.
        Examine the cmacro node directly, no need to call cpp_defined.
        (_cpp_execute_include, read_include_file): Set cmacro to
        NEVER_REINCLUDE, not U"".
        * cpplex.c (cpp_push_buffer): Don't set new->if_stack.
        (cpp_get_token): If pfile->skipping is true, discard text and
        keep scanning until we hit a directive; don't expand macros.

        * cpplib.c (struct if_stack): Remove if_succeeded, add
        was_skipping. Change control_macro to a cpp_hashnode * and
        shorten name to cmacro.  Remove typedef IF_STACK.
        (parse_ifdef), detect_if_not_defined): Return a cpp_hashnode *.
        (conditional_skip, skip_if_group,
        consider_directive_while_skipping): Delete.
        (push_conditional): New.
        (_cpp_handle_directive): Don't process directives other than
        conditionals if we are skipping.

        (do_ifdef, do_ifndef, do_if, do_else, do_elif, do_endif):
        Update to new scheme.
        (validate_else): Skip rest of line here, unconditionally.
        (_cpp_unwind_if_stack): The stack is per-buffer.  Force
        pfile->skipping off.

        (all): Remove `scare quotes' from error messages.

2000-05-29  Richard Henderson  <rth@cygnus.com>

        * function.c (emit_return_into_block): New line_note arg; emit it.
        (thread_prologue_and_epilogue_insns): Attempt to locate a line note
        for the close brace to accompany HAVE_return.  Move all line notes
        following the epilogue to before the NOTE_INSN_EPILOGUE_BEG.

2000-05-29  Richard Henderson  <rth@cygnus.com>

        * longlong.h [__alpha] (count_leading_zeros): New.
        (count_trailing_zeros): New.
        (COUNT_LEADING_ZEROS_0): New.

        * config/alpha/alpha.c (alpha_zero_comparison_operator): New.
        (alpha_split_conditional_move): New.
        * config/alpha/alpha-protos.h: Prototype them.
        * config/alpha/alpha.h (PREDICATE_CODES): Update.
        (CPP_CPU_DEFAULT_SPEC): Fix typo for EV67.
        * config/alpha/alpha.md: Update ffs cix commentary.
        (*ze_and_ne): New.
        (*nabssf2, *nabsdf2): New.
        (*mov[qhsd]icc_internal): Use add_operand.
        (if_then_else constant splitters): New.
        (*cmp_sadd_di, *cmp_sadd_si, *cmp_sadd_sidi): New.
        (*cmp_ssub_di, *cmp_ssub_si, *cmp_ssub_sidi): New.

2000-05-29  Richard Henderson  <rth@cygnus.com>

        * combine.c (force_to_mode) [MINUS]: Convert subtraction from
        a constant to NEG or NOT when conditions allow.

        * combine.c (combine_simplify_rtx): Don't create an if_then_else
        unless both args are general_operand.  Don't canonicalize plus
        to ior unless it helps.

        * toplev.c (rest_of_compilation): Set no_new_pseudos after flow1;
        instead track register_life_up_to_date.  Toggle no_new_pseudos
        around if_convert.  

2000-05-28  Geoff Keating  <geoffk@cygnus.com>

        * config/rs6000/rs6000.c (output_cbranch): Escape '%' characters
        so output_operand doesn't see them.

Sun May 28 18:37:07 2000  Clinton Popetz  <cpopetz@cygnus.com>

        * lcm.c (make_preds_opaque): Fix comment.
        (optimize_mode_switching): Use NORMAL_MODE instead of 
        MODE_USES_IN_EXIT_BLOCK.  Change leftover instance of
        FP_MODE_NONE to no_mode.  Rename MODE_AT_ENTRY to NORMAL_MODE.
        Handle insertions before an existing NOTE_INSN_BASIC_BLOCK.
        * tm.texi (OPTIMIZE_MODE_SWITCHING): Refer to NORMAL_MODE.
        (MODE_USES_IN_EXIT_BLOCK): Delete.
        (MODE_AT_ENTRY) Rename to NORMAL_MODE.
        * sh.h (MODE_USES_IN_EXIT_BLOCK): Delete.
        (MODE_AT_ENTRY): Rename to NORMAL_MODE.
        (MODE_NEEDED): Don't look for USE.
        (EPILOGUE_USES): Define.

Sun May 28 23:26:59 2000  Philippe De Muyter <phdm@macqel.be>

        * mklibgcc.in (all): Variable initialised to `libgcc'.

2000-05-28  Gabriel Dos Reis  <gdr@codesourcery.com>

        * toplev.h (skip_leading_substring): New macro.
        * toplev.c (decode_f_option): Use skip_leading_substring instead
        of strncmp.
        (decode_W_option): Likewise.

2000-05-28  Nick Clifton  <nickc@cygnus.com>

        * tm.texi (CONDITIONAL_REGISTER_USAGE): Document that it can
        modify reg_names.

2000-05-28  Richard Henderson  <rth@cygnus.com>

        * regclass.c (record_operand_costs): Protect reg_changes_size
        with CLASS_CANNOT_CHANGE_SIZE.

        * loop.c (instrument_loop_bct): Set JUMP_LABEL on the new insn.

2000-05-28  Richard Henderson  <rth@cygnus.com>

        * function.c (diddle_return_value): A pcc-style struct return
        returns a pointer.

2000-05-27  Zack Weinberg  <zack@wolery.cumb.org>

        * cppfiles.c: Read files in, using mmap if possible, then
        prescan them separately.
        (read_file, read_with_read): New functions.
        * cpplex.c: Don't define UCHAR_MAX.
        (_cpp_read_and_prescan): Rename to _cpp_prescan.  Don't read
        the file here.

        * cppinit.c (handle_option): Automatically define __cplusplus,
        __OBJC__, __ASEEMBLER__, _LANGUAGE_FORTRAN here when we see
        the respective -lang switch.

        * cpphash.h (enum node_type, struct hashnode, _cpp_lookup
        prototype): Move to...
        * cpplib.h: ... here.  Rename struct hashnode to struct
        cpp_hashnode and give it a typedef.  Rename _cpp_lookup to
        cpp_lookup.  Add 'fe_value' slot, a union tree_node *.

2000-05-27  Geoffrey Keating  <geoffk@cygnus.com>

        * config/rs6000/rs6000.md (movsi): Constify 'name'.

        * regclass.c [CLASS_CANNOT_CHANGE_SIZE]
        (class_can_change_size): New variable.
        (reg_changes_size): New variable.
        (init_reg_sets_1): Initialise class_can_change_size.
        (record_operand_costs): Remove subreg_changes_size.
        Don't pass it around.  Instead update reg_changes_size.
        (regclass): Initialise and free reg_changes_size.  If a register
        changes size, don't preference it to a class that contains
        registers that can't change size.
        (record_reg_classes): Don't look at subreg_changes_size.

2000-05-27  Richard Henderson  <rth@cygnus.com>

        * print-rtl.c (reg_names): Remove const.
        * regclass.c (reg_names): Likewise.
        * regs.h (reg_names): Likewise.
        * hard-reg-set.h (reg_names): Likewise.

2000-05-27  Richard Henderson  <rth@cygnus.com>

        * config/rs6000/rs6000.md (untyped_call): Use GEN_CALL.

2000-05-27  Richard Henderson  <rth@cygnus.com>

        * config/alpha/alpha.c (alpha_does_function_need_gp): Test
        TARGET_PROFILING_NEEDS_GP in the if, instead of with an ifdef.
        (alpha_expand_prologue): Emit prologue_mcount if needed.
        * config/alpha/alpha.h (TARGET_PROFILING_NEEDS_GP): Default to 0.
        * config/alpha/alpha.md (prologue_mcount): New.
        * config/alpha/linux.h (FUNCTION_PROFILER): Remove.
        (TARGET_PROFILING_NEEDS_GP): Undef before redefining.
        * config/alpha/netbsd.h: Likewise.

2000-05-27  Richard Henderson  <rth@cygnus.com>

        * config/alpha/elf.h (SELECT_SECTION): Mirror Kenner's May 19
        change to config/elfos.h.

2000-05-27  Richard Henderson  <rth@cygnus.com>

        * Makefile.in (resource.o): Depend on except.h.
        * except.h (output_exception_table_data): Prototype.
        * genconfig.c (gen_peephole2): Prototype.
        * genemit.c (main): Include ggc.h.
        * genoutput.c: Revert parts of last change: include errors.h
        (main): Set progname.
        * recog.c: Include hard-reg-set.h before recog.h.
        * resource.c: Include except.h.

        * config/alpha/alpha-protos.h (alpha_arg_info_reg_val): Protect
        with RTX_CODE.
        (alpha_write_linkage): Protect with BUFSIZ.
        (alpha_need_linkage): Update prototype.
        * config/alpha/alpha.c (function_arg): Move VMS code here.
        (alpha_links_base): Remove.
        (alpha_links): New.
        (mark_alpha_links_node, mark_alpha_links): New.
        (alpha_write_one_linkage): New.
        (alpha_need_linkage): Use a splay tree.  Build the linkage symbol.
        (alpha_write_linkage): Use splay_tree_foreach.
        * config/alpha/alpha.md (call_vms): Use alpha_need_linkage
        to get the linkage symbol.
        (call_value_vms): Likewise.
        * config/alpha/elf.h (output_file_directive): Remove decl.
        (ctors_section, dtors_section): Prototype.
        (sbss_section, sdata_section): Prototype.
        * config/alpha/vms.h (FUNCTION_ARG): Remove.
        (readonly_section, link_section, literals_section): Prototype.
        (ctors_section, dtors_section): Prototype.
        (vms_valid_decl_attribute_p): Remove decl.
        (alpha_arg_type, alpha_arg_info_reg_val): Likewise.

2000-05-27  Geoff Keating  <geoffk@cygnus.com>

        * reload.c (get_secondary_mem): Don't widen floating-point modes.

        * combine.c (subst): Honour CLASS_CANNOT_CHANGE_SIZE when
        substituting the REG in a (subreg:X (reg:Y ...)).

2000-05-28  Neil Booth  <NeilB@earthling.net>

        * cpplex.c (_cpp_lex_line): Merge vertical space.  Flag
        first token of a line BOL.  Update EOF code for this.
        Remove illegal directive check - it appears in the (not
        yet committed) caller.
        * cpplib.h (BOL): New flag.

2000-05-28  Neil Booth  <NeilB@earthling.net>

        * cpplex.c (_cpp_init_toklist): No comment space to initialise.
        (_cpp_free_toklist): No comment space to free.
        (expand_comment_space): Remove.
        (save_comment_space): Place the comment in the current token and
        not in a separate comment space.
        (_cpp_lex_line): Save comments during plain code and #define
        directives only.
        * cpplib.h (struct _cpp_toklist): Remove comment space.

2000-05-28  Neil Booth  <NeilB@earthling.net>

        * cppexp.c (parse_assertion): Supply extra argument to
        _cpp_init_toklist.
        * cpplib.c (do_assert, do_unassert): Similarly.
        * cpphash.h (_cpp_init_toklist) Update.
        (_cpp_expand_token_space): New.
        (DUMMY_TOKEN, NO_DUMMY_TOKEN): New.
        * cpplex.c (_cpp_init_toklist): New argument.
        (parse_string2): New argument multiline_ok.
        (spell_token): Take a const cpp_token *.
        (INIT_NAME): Replace with INIT_TOKEN_NAME.  Update tokens_used.
        (SPELL_ macros): Replace with enum.
        (expand_token_space): Replace with _cpp_expand_token_space.
        Take COUNT argument.
        (IS_DIRECTIVE): Update.
        (_cpp_lex_line): Update token structure before parsing number.
        Don't assume start at beginning of token list.
        (save_comment): Use INIT_TOKEN_NAME.

2000-05-27  Zack Weinberg  <zack@wolery.cumb.org>

        * configure.in (stage1_warn_cflags): Add -Wstrict-prototypes
        -Wmissing-prototypes.
        * configure: Regenerate.
        * gcc.texi: Remove explanation of MD_CALL_PROTOTYPES.

        * builtins.c, calls.c: Change all instances of gen_call_* or
        gen_sibcall_* to GEN_CALL_* and GEN_SIBCALL_*.
        * calls.c (struct_value_size_rtx): Separate definition from
        initialization to avoid unused variable warning.

        * genflags.c (gen_macro): New function.
        (gen_proto): Call it for gen_call_* and gen_sibcall_*.
        (gen_nonproto): Delete.
        (gen_insn): Put all insns on the same obstack.
        (main): Generate prototypes for everything unconditionally.

        * configure.in: Add AC_CHECK_TYPE(ssize_t).  Remove commented 
        out check for wchar_t.
        * acconfig.h: Add template for ssize_t.  Remove @TOP@.
        * system.h: Add infrastructure for defining missing   
        TYPE_MAX/TYPE_MIN macros.  Use it to provide fallback  
        definitions of UCHAR_MAX and SSIZE_MAX.
        * configure: Regenerate.
        * config.in: Regenerate.

        * Makefile.in (libgcc2.ready): Rename to libgcc.ready.
        Depend on $(LANGUAGES) as well as $(GCC_PATCHES) and fixed
        headers.
        (clean): No need to delete libgcc1.a, libgcc1-asm.a,
        libgcc2.a, or libgcc1.null.

2000-05-27  Richard Henderson  <rth@cygnus.com>

        * Makefile.in (recog.o): Don't depend on resource.h.
        * recog.c: Don't include resource.h.
        (recog_last_allowed_insn): Remove.
        (recog_next_insn): Remove.
        (struct peep2_insn_data): New.
        (peep2_insn_data, peep2_current): New.
        (peep2_next_insn): New.
        (peep2_regno_dead_p, peep2_reg_dead_p): New.
        (peep2_find_free_register): New.
        (peephole2_optimize): Track life information by insn as we go.
        * recog.h: Update declarations.
        * resource.c (find_free_register, reg_dead_p): Remove.
        * resource.h: Remove their declarations.
        * toplev.c: Include hard-reg-set.h before recog.h.

        * genconfig.c (max_insns_per_peep2): New.
        (gen_peephole2): New.
        (main): Call it.
        * genemit.c (output_peephole2_scratches): Generate calls to
        peep2_find_free_register; adjust surrounding code.
        (main): Have insn-emit.c include hard-reg-set.h before recog.h.
        * genrecog.c (change_state): Don't track last_insn.
        (write_action): Write into *_pmatch_len before accepting.
        (write_tree): Adjust peephole2_insns and subroutines to match.

        * config/i386/i386.md (all peepholes): Use peep2_regno_dead_p.

        * config/alpha/alpha.c (hard_fp_register_operand): Mind the mode.
        (hard_int_register_operand): New.
        * config/alpha/alpha-protos.h: Declare it.
        * config/alpha/alpha.h (PREDICATE_CODES): Update.
        * config/alpha/alpha.md (peep2 patterns): Use hard_int_register_operand
        as needed; use peep2_reg_dead_p instead of dead_or_set_p.

2000-05-27  Richard Henderson  <rth@cygnus.com>

        * function.c (thread_prologue_epilogue_insns): Don't move the
        line note at the head of the chain.  Only force a lineno note
        before the end of block 0.

2000-05-27  Richard Henderson  <rth@cygnus.com>

        * gensupport.c (collect_insn_data): Record the maximum number
        of alternatives, not the last seen.

        * genoutput.c: Don't include errors.h.
        (struct data): Add lineno member.
        (have_error): New.
        (scan_operands): Use message_with_line instead of error.
        (validate_insn_alternatives): Likewise.
        (gen_insn): Accept and store the pattern's line number.
        (gen_peephole, gen_expand, gen_split): Likewise.
        (main): Don't set progname.  Pass line_no to gen_foo.

2000-05-27  Richard Henderson  <rth@cygnus.com>

        * config/d30v/d30v.c (d30v_print_operand): Handle ':'.
        * config/d30v/d30v.h (PRINT_OPERAND_PUNCT_VALID_P): Accept ':'.
        * config/d30v/d30v.md (attr predicable): New.
        (all insn patterns): Mark non-predicable patterns; use %: on the rest.
        (andsi3*): Unify into one pattern.
        (iorsi3*, xorsi3*): Likewise.
        (peephole2 patterns): Use peep2_reg_dead_p; verify not a
        conditional return.
        (old cond_exec patterns): Remove.
        (define_cond_exec): New.

Sat May 27 11:01:27 2000  Richard Kenner  <kenner@vlsi1.ultra.nyu.edu>

        * tree.h (TREE_CODE_LENGTH): New macro.
        * c-common.c (c_find_base_decl): Use it.
        * expr.c (safe_from_p): Likewise.
        * print-tree.c (print_node): Likewise.
        * tree.c (make_node, copy_node, get_identifier): Likewie.
        (first_rtl_op, contains_placeholder_p, substitute_in_expr): Likewise.
        (build, build_nt, build_parse_node, simple_cst_equal): Likewise.
        * fold-const.c (make_range): Likewise.
        (fold): Likewise; also use first_rtl_op.
        * c-iterate.c (collect_iterators): Use first_rtl_op.
        * calls.c (calls_function_1): Likewise; also rename TYPE to CLASS.
        Use IS_EXPR_CODE_CLASS.
        (preexpand_calls): Likewise.
        * ggc-common.c (ggc_mark_trees): Rework to use first_rtl_op
        and TREE_CODE_LENGTH.
        * stmt.c (warn_if_unused_value): If no operands, no unused value.

2000-05-26  Geoffrey Keating  <geoffk@cygnus.com>

        * config/rs6000/rs6000.md (movsi_internal1): Use '%a1' rather
        than '%1(%*)'.
        (movdi_internal64): Likewise.

        * config/rs6000/rs6000.md: Correct order of operands for DImode
        boolean patterns.

        * config/rs6000/rs6000.c (boolean_or_operator): New function.
        * config/rs6000/rs6000-protos.h (boolean_or_operator): Prototype it.
        * config/rs6000/rs6000.h (PREDICATE_CODES): Add boolean_or_operator.
        * config/rs6000/rs6000.md: Use boolean_or_operator instead of
        boolean_operator for the boolean patterns without NOTs.

        * config/rs6000/rs6000.c (reg_or_logical_cint_operand): Rename
        from reg_or_u_cint_operand.  Change comment and behaviour.
        (logical_operand): Clean up, add assertion.
        (non_logical_cint_operand): Also check for
        reg_or_logical_cint_operand.
        * config/rs6000/rs6000.h (PREDICATE_CODES): Update.
        * config/rs6000/rs6000.md (iorsi3): Use reg_or_logical_cint_operand
        in the expander.
        (xorsi3): Likewise.
        (iordi3): Likewise.
        (xordi3): Likewise.

2000-05-26  Mark Mitchell  <mark@codesourcery.com>

        * tree.h (struct record_layout_info): Rename to (struct
        record_layout_info_s).
        * stor-layout.c (start_record_layout): Replace
        `record_layout_info' with `record_layout_info_s'.

2000-05-26  Richard Earnshaw  <rearnsha@arm.com>

        * flow.c (find_label_refs): New function.
        (find_basic_blocks_1): Call it for each alternative of a call 
        placeholder.

2000-05-26  Richard Earnshaw  <rearnsha@arm.com>

        * ifcvt.c (cond_exec_get_condition): Set test_if to the SET_SRC
        of get_pc.

2000-05-25  Richard Henderson  <rth@cygnus.com>

        * config/alpha/alpha.c (alpha_comparison_operator): Don't be
        so strict about DImode.
        (alpha_swapped_comparison_operator): Likewise.
        * config/alpha/alpha.md (*setne_internal): Name it.  Allow
        any integer output mode.
        (*setcc_internal): Likewise.
        (*setcc_swapped_internal): Likewise.
        (*movdicc_internal, *movdicc_lbc, *movdicc_lbs): Name them.
        (*mov[qhs]icc_internal): New.
        (*mov[qhs]icc_lbc, *mov[qhs]icc_lbs): New.

2000-05-25  J. David Anglin  <dave@hiauly1.hia.nrc.ca>

        * vax.h (CPP_SPEC): Define __GFLOAT and GFLOAT when -mg is specified.

2000-05-25  Richard Henderson  <rth@cygnus.com>

        * bb-reorder.c (reorder_block_def): Reorder elements for size.
        Remove add_jump; add next; replace flags with visited.
        (rbd_init): Remove.
        (REORDER_BLOCK_HEAD, REORDER_BLOCK_VISITED): Remove.
        (REORDER_BLOCK_FLAGS, REORDER_BLOCK_INDEX): Remove.
        (REORDER_BLOCK_ADD_JUMP, REORDER_BLOCK_EFF_HEAD): Remove.
        (REORDER_BLOCK_EFF_END, REORDER_BLOCK_SCOPE): Remove.
        (RBI): New.
        (reorder_index, reorder_last_visited): Remove.
        (skip_insns_after_block): Rewrite to use a switch.
        (get_common_dest): Remove.
        (chain_reorder_blocks): Remove.
        (record_effective_endpoints): Split out from reorder_basic_blocks.
        (make_reorder_chain): Likewise.  Loop until all blocks are placed.
        (make_reorder_chain_1): Renamed from old make_reorder_chain.
        Only construct the reorder chain, do not move insns.  Try harder
        to tail recurse.
        (label_for_bb, emit_jump_to_block_after): New.
        (fixup_reorder_chain): Use them.  Do bulk block movement.  Examine
        and adjust the jump insns appropriately.  Fixup basic_block_info.
        (verify_insn_chain): Always define.
        (relate_bbs_with_scopes): Call xmalloc, not xcalloc.  Fix thinko
        in allocation size.
        (make_new_scope): Don't write zeros to calloc'd space.
        (build_scope_forest): Rely on xrealloc to DTRT.
        (reorder_basic_blocks): Don't build loop nest.  Don't fail if
        profile_arc_flag.  Streamline EH test.

        * flow.c (redirect_edge_succ, redirect_edge_pred): New.
        * basic-block.h: Declare them.

2000-05-25  Alexandre Oliva  <aoliva@cygnus.com>

        * emit-rtl.c (reset_used_decls): New function.
        (unshare_all_rtl_again): Call it.

2000-05-25  Zack Weinberg  <zack@wolery.cumb.org>

        * cpplex.c (maybe_macroexpand): Warn about function-like
        macros used in non-function context, if -Wtraditional.

2000-05-25  Mark Mitchell  <mark@codesourcery.com>

        * recog.c (peephole2_optimize): Use INSN_P.

2000-05-25  Richard Henderson  <rth@cygnus.com>

        * ifcvt.c (seq_contains_jump): New.
        (noce_try_store_flag_constants): Use it to fail conversion.
        (noce_try_store_flag_inc, noce_try_store_flag_mask): Likewise.

2000-05-25  Mark Mitchell  <mark@codesourcery.com>

        * except.h (can_throw): Declare it.
        * except.c (can_throw): Give it external linkage.
        * resource.c (find_dead_or_set_registers): Use can_throw.
        
2000-05-25  Richard Henderson  <rth@cygnus.com>

        * flow.c (mark_set_1): Don't record conditionally dead memory.

2000-05-25  Jan Hubicka  <jh@suse.cz>

        * combine.c (try_combine): Use any_condjump_p, any_uncondjump_p
        and pc_set at the place of simplejump_p and condjump_p.
        * cse.c (record_jump_equiv): Likewise.
        * emit-rtl.c (emit): Likewise.
        * explow.c (find_next_ref): Likewise.
        * flow.c (tidy_fallthru_edge): Likewise.
        (init_propagate_block_info): Likewise.
        * gcse.c (delete_null_pointer_checks): Likewise.
        * ifcvt.c (cond_exec_get_condition, noce_get_condition,
        dead_or_predicable): Likewise.
        * integrate.c (copy_insn_list): Likewise.
        * loop.c (scan_loop, verify_dominator, find_and_verify_loops,
        for_each_insn_in_loop, check_dbra_loop, get_condition,
        insert_bct, load_mems): Likewise.
        * resource.c (find_dead_or_set_registers): Likewise.
        * sibcalls.c (simplejump_p): Likewise.
        * unroll.c (copy_loop_body, reg_dead_after_loop): Likewise.

2000-05-25  David Edelsohn  <edelsohn@gnu.org>

        * rs6000.c (expand_block_move): Add 64-bit PowerPC doubleword move
        to STRING case.  Use doubleword STRING move for TARGET_POWERPC64
        when unaligned.
        * rs6000.h (CONST_OK_FOR_LETTER_P, 'J'): unsigned HOST_WIDE_INT.
        (RETURN_ADDR_RTX): Use COUNT and FRAME, not count and frame.
        (LEGITIMIZE_RELOAD_ADDRESS): unsigned HOST_WIDE_INT high.
        * rs6000.md: Name various internal patterns.

2000-05-25  Jan Hubicka  <jh@suse.cz>

        * jump.c (invert_exp_1): Remove first argument, use pc_set
        to get the expression.
        (redirect_exp): Make static; redirect only the pc_set expression,
        remove first argument.
        (invert_exp): Remove first argument, make static.
        (jump_optimize): Use any_condjump_p, any_uncondjump_p and
        any_onlyjump at most places where we originaly did condjump_p
        and simplejump_p.
        (jump_back_p, follow_jumps, thread_jumps): Likewise.
        (delete_barrier_succesors): Use pc_set.
        (invert_jump_1, invert_jump, redirect_jump_1, redirect_jump): Update
        calls of invert_exp and redirect_exp.
        * rtl.h (redirect_exp, invert_exp): Remove.
        * unroll.c (copy_loop_body): Use invert_jump and redirect_jump.

2000-05-25  Richard Henderson  <rth@cygnus.com>

        * stmt.c (expand_end_bindings): Fix thinko last change.

2000-05-25  Andrew MacLeod  <amacleod@cygnus.com>
            Andrew Haley  <aph@cygnus.com>

        * except.c  (func_eh_entry): Add emitted field.
        (new_eh_region_entry): Set emitted field to 0;
        (output_exception_table_entry): Only emit previously un-emitted data,
        and send it to the eh_data section.
        (output_exception_table): Break out common parts. Output
        exception table for entire compilation unit to eh_data section.
        (output_exception_table_data): Common parts of output_exception_table.
        Send output to eh_data section.
        (output_function_exception_table): Output exception table data for
        a single function to eh_data section.
        (free_exception_table): New external to free the table.
        * except.h (free_exception_table): Add prototype.
        (output_function_exception_table): Add prototype.
        * final.c (final_end_function): Output function exception table
        for IA64_UNWIND_INFO.
        (final_scan_insn): Emit any unwind directives for an insn.

        * frame-dwarf2.c: New file containing all DWARF 2 specific code
        from frame.c.
        * frame.c: Remove all DWARF 2 specific code.
        * config/ia64/frame-ia64.c: New file.
        (gthread_stuff): Make all gthread available with 
        IA64_UNWIND_INFO.
        (dwarf_fde): Define an IA64 struct for dwarf_fde.
        (__register_frame_info, __register_frame): Move to common area of file.
        (__register_frame_info_table, __register_frame_table): Move to common i
        area.
        (__deregister_frame_info, __deregister_frame): Move to common area.
        (__frame_init, find_fde): New versions for IA64_UNWIND_INFO.
        (read_uleb128): New version for ia64.
        (get_unwind_record): Read the next IA-64 unwind record.
        (read_R_record): Read a region header record.
        (process_a_b_reg_code): X record helper.
        (read_X_record): Read an X format record.
        (read_B_record): Read a B format record.
        (P3_record_types): List of record types matching the P3 format.
        (P7_record_types): List of record types matching the P7 format.
        (P8_record_types): List of record types matching the P8 format.
        (read_P_record): Read a P format record.
        (init_ia64_reg_loc): Set default fields for a register.
        (init_ia64_unwind_frame): Set defaults for all register records.
        (execute_one_ia64_descriptor): Execute one descriptor record.
        (rse_address_add): Calculate the position of a local reg in memory.
        (normalize_reg_loc): Turn a location descriptor into a memory address.
        (maybe_normalize_reg_loc): Only normalize a descriptor if it falls 
        within a specified PC offset range.
        (get_real_reg_value): Given a register location, retrieve its value.
        (set_real_reg_value): Change the value of a register location.
        (copy_reg_value): Copy reg values, if needed.
        (copy_saved_reg_state): Copy all registers that need to be copied.
        (process_state_between): Normalize all frame register records that
        fall within the specified PC range.
        (frame_translate): Take a processed frame description, and turn 
        everything into addresses.
        (build_ia64_frame_state ): Find and create frame state record for a PC.
        (get_personality): Get the personality routine for a given frame.
        (get_except_table): Get the exception table for a given frame.
        (record_name): Unwind record names for debugging.
        (print_record): Print and unwind record.
        (print_all_records): Print an entire unwind image.
        (__ia64_backtrace): Print a backtrace.
        (ia64_backtrace_helper): New function.
        (__register_frame_info_aux): New function.
        * config/ia64/crtend.asm (__do_frame_setup_aux): New function.

        * frame.h (enum unw_record_type): New unwind record types.
        (struct unw_p_record, unw_b_record, unw_x_record) : New unwind records.
        (struct unw_r_record, unwind_record): New unwind record structs.
        (struct unwind_info_ptr): Unwind information layout.
        (IA64_UNW_LOC_TYPE_*): Macros for different types for location 
        descriptors.
        (struct ia64_reg_loc): Register location description.
        (struct ia64_frame_state): Location of all registers in a frame.
        (struct object): Add pc_base and fde_end for IA64_UNWIND_INFO.
        * libgcc2.c (__ia64_personality_v1): Personality routine.
        (__calc_caller_bsp): Calculate the bsp register for the caller's
        frame.
        (ia64_throw_helper): Figure out who to return to and set up the 
        registers.
        (__throw): Throw routine.

        * output.h (assemble_eh_align, assemble_eh_label): New functions
        to generate EH info where we want it.   
        (assemble_eh_integer): New function.
        * toplev.c (compile_file): Output module level exception table for
        non-ia64 targets.
        (main): Set exceptions_via_longjump and flag_new_exceptions based 
        on IA64_UNWIND_INFO too.

        * varasm.c (assemble_eh_label): Generate a label via
        ASM_OUTPUT_EH_LABEL if it has been specified.
        (assemble_eh_align): Generate an alignment directive via 
        ASM_OUTPUT_EH_ALIGN if it has been specified.
        (assemble_eh_label): Generate an integer value via
        ASM_OUTPUT_EH_type if they have been specified.
        * config/ia64/ia64.c (rtx_needs_barrier): Add flushrs.
        (ia64_init_builtins): Add __builtin_ia64_bsp
        and __builtin_ia64_flushrs.     
        (ia64_expand_builtin): Add IA64_BUILTIN_BSP and
        IA64_BUILTIN_FLUSHRS.
        * config/ia64/ia64.h (ia64_builtins): Add IA64_BUILTIN_BSP and
        IA64_BUILTIN_FLUSHRS.

        * config/ia64/ia64.md (flushrs): New insn to flush the register
        stack.  Add to unspec list.

        * config/ia64/crtbegin.asm (frame_object): Change size.
        (__do_frame_setup_aux): New function.
        * config/ia64/crtend.asm: call __do_frame_setup_aux.
        * config/ia64/t-ia64 (LIB2ADDEH): Add.
        * Makefile.in (LIB2ADDEH): Add.
        (LIB2ADD): Use LIB2ADDEH.
        
2000-05-24  Richard Henderson  <rth@cygnus.com>

        * recog.c (offsettable_address_p): If mode size is zero, assume
        BIGGEST_ALIGNMENT.

2000-05-24  J. David Anglin  <dave@hiauly.hia.nrc.ca>

        * configure.in: Check for -Wno-long-long option support and improve
        handling of warning CFLAGS for stages 1 and 2.
        * Makefile.in (WARN_CFLAGS): Move definition to configure.in.
        * configure: Regenerate.

Wed May 24 19:37:53 2000  Jeffrey A Law  (law@cygnus.com)

        * gcc.texi: Remove contributor list.  Instead include contrib.texi.
        * contrib.texi: New file.

Thu May 25 02:27:22 2000  J"orn Rennecke <amylaar@cygnus.co.uk>

        * loop.c (basic_induction_var): Avoid double recording of an increment.

Thu May 25 02:19:27 2000  J"orn Rennecke <amylaar@cygnus.co.uk>

        * Back out this patch:
        Tue Dec  7 19:22:06 1999  Richard Henderson  <rth@cygnus.com>
          * loop.h (struct induction): Add multi_insn_incr.
          * loop.c (basic_induction_var): New multi_insn_incr argument.
          Set it if we search back through previous insns for the biv.
          (record_biv): New multi_insn_incr argument; fill in struct induction.
          (strength_reduce): Discard an iv with multiple bivs, any of
          which require multiple insns to increment.

        * loop.c (check_insn_for_bivs): Remove bits copied from above patch.

Thu May 25 02:09:10 2000  J"orn Rennecke <amylaar@cygnus.co.uk>

        * rtl.h (loc_mentioned_in_p): Declare.
        * reload.c (loc_mentioned_in_p): Moved from here...
        * rtlanal.c (loc_mentioned_in_p): to here.  No longer static.
        Fix loop increment for 'E' handling.
        * loop.c (strength_reduce): When doing biv->giv conversion,
        take multi-insn biv increments into account.

2000-05-24  Jason Merrill  <jason@casey.soma.redhat.com>

        * stmt.c (expand_end_bindings): Look through NOTEs to find a
        BARRIER.

2000-05-24  Mark Mitchell  <mark@codesourcery.com>

        * calls.c (expand_call): Handle cleanups in tail-recursion
        arguments analagously to cleanups in sibling calls.

2000-05-24  Kaveh R. Ghazi  <ghazi@caip.rutgers.edu>

        * simplify-rtx.c: Rename macro SIGN_EXTEND to HWI_SIGN_EXTEND.
        All callers changed.

2000-05-24  Alexandre Oliva  <aoliva@cygnus.com>

        * expr.c (expand_assignment, store_expr, expand_expr,
        expand_expr_unaligned): Set in_check_memory_usage while emitting
        chkr_check_addr libcall.

2000-05-24  Nick Clifton  <nickc@cygnus.com>

        * fold-const.c (extract_muldiv): When constructing a
        multiplier/divisor, do not expect const_binop to correctly
        determine if overflow has occured, so check explicitly.

2000-05-24  Alexandre Oliva  <aoliva@cygnus.com>

        * c-decl.c (build_enumerator): Don't modify the value's type,
        convert it.

2000-05-24  Andreas Jaeger  <aj@suse.de>

        * mips.h (LINKER_ENDIAN_SPEC): Pass -EL to linker by default.

2000-05-24  Eric Christopher <echristo@cygnus.com>

        * configure.in: Redefine inhibit_libc conditions.
        * libgcc2.c: Remove inhibit_libc conditional define.
        * configure: Regenerate.

2000-05-24  Phil Edwards  <pme@sourceware.cygnus.com>

        * configure.in:  For --enable-languages=LIST, check for empty LIST.
        * configure:  Regenerate.

2000-05-24  Lars Brinkhoff  <lars@nocrew.org>

        * pdp11.h (STACK_BOUNDARY): Define.

2000-05-24  Jakub Jelinek  <jakub@redhat.com>

        * ifcvt.c (if_convert): Update life info globally.

2000-05-24  Alexandre Oliva  <oliva@lsd.ic.unicamp.br>

        * emit-rtl.c (unshare_all_decls): New function.
        (unshare_all_rtl): Call it.

2000-05-23  Nick Clifton  <nickc@cygnus.com>

        * configure.in: Treat 'strongarm' as if it were 'arm' when
        determining cpu type.

        * configure: Regenerate.

        * config/arm/arm.c: Change 'char *' to 'const char *' for cases
        where constant strings are involved.

        * config/arm/arm.h (arm_condition_codes): Change type to 'const
        char *'.

        * config/arm/arm-protos.h: Change 'char *' to 'const char *' for
        cases where constant strings are involved.

Tue May 23 15:08:31 2000  Clinton Popetz  <cpopetz@cygnus.com>

        * config/sh/sh.c (gen_far_branch, split_branches): Update
        to reflect new prototypes for redirect_jump and invert_jump.
        (sh_insn_length_adjustment): Get rid of const warnings.

2000-05-23  Kazu Hirata  <kazu@hxi.com>

        * invoke.texi (Options for Debugging Your Program or GCC): Update
        the names of dump files.

Tue May 23 13:58:52 2000  Philippe De Muyter  <phdm@macqel.be>

        * configure.in (NO_MINUS_C_MINUS_O): Fix thinko in previous fix.
        * configure: Regenerated.

2000-05-23  Zack Weinberg  <zack@wolery.cumb.org>

        * simplify-rtx.c (SIGN_EXTEND): New macro.
        (simplify_unary_operation, simplify_binary_operation, 
        simplify_relational_operation): Use SIGN_EXTEND.  Make low
        halves of (low, high) pairs unsigned if they weren't already.       
        (simplify_ternary_operation): Cast INTVAL to unsigned before
        comparing to a MODE_BITSIZE.

2000-05-23  Kaveh R. Ghazi  <ghazi@caip.rutgers.edu>

        * aclocal.m4 (gcc_AC_CHECK_DECL, gcc_AC_CHECK_DECLS): New macros
        rewritten from the internals of gcc_AC_NEED_DECLARATION{S}.
        
        * configure.in (gcc_AC_CHECK_DECLS): Call this instead of
        gcc_AC_NEED_DECLARATIONS.

        * dwarfout.c: Don't prototype time().

        * gcc.c: Check HAVE_DECL_* instead of NEED_DECLARATION_*.

        * system.h: Likewise.

        * toplev.c: Likewise.

2000-05-23  Zack Weinberg  <zack@wolery.cumb.org>

        * c-decl.c (pushdecl): Invert sense of test for non-global types.

Tue May 23 18:11:42 2000  J"orn Rennecke <amylaar@cygnus.co.uk>

        * reload1.c (reload_cse_move2add): Honor TRULY_NOOP_TRUNCATION.

2000-05-23  Jonathan Larmour  <jlarmour@redhat.co.uk>

        * config/mips/elf64.h (CTOR_LISTS_DEFINED_EXTERNALLY): Define

Tue May 23 06:50:29 2000  Richard Kenner  <kenner@vlsi1.ultra.nyu.edu>

        * config/alpha/alpha.c: Remove #ifdef HAIFA since now only scheduler.
        (alpha_start_function): Never write ..ng label if VMS or NT.
        (alpha_align_insns): Remove GP_IN_USE arg.
        Alignment now unsigned.
        (alpha_reorg): Don't pass GP_IN_USE arg to alpha_align_insns.
        * config/alpha/alpha.md (prologue_ldgp): Split into one define_expand
        and two define_insn's.

2000-05-22  Richard Henderson  <rth@cygnus.com>

        * combine.c (simplify_comparison): Use trunc_int_for_mode.

2000-05-22  Richard Henderson  <rth@cygnus.com>

        * stor-layout.c (place_field): Change rli->size to rli->offset.

2000-05-22  Richard Henderson  <rth@cygnus.com>

        * function.c (thread_prologue_and_epilogue_insns): Make sure 
        existing line number notes appear after the prologue.

Mon May 22 21:49:00 2000  Richard Kenner  <kenner@vlsi1.ultra.nyu.edu>

        * config/alpha/alpha.c (alpha_fnname): New static variable.
        (print_operand, case '~'): New case.
        (alpha_expand_prologue): Emit prologue_ldgp insn if needed.
        (alpha_start_function): Set alpha_fnname.
        Write "ng" label if no ldgp; don't write ldgp insn.
        * config/alpha/alpha.h (PRINT_OPERAND_PUNCT_VALID_P): New case '~'.
        * config/alpha/alpha.md (prologue_ldgp): New define_insn.

Mon May 22 11:30:48 2000  Clinton Popetz  <cpopetz@cygnus.com>

        * jump.c (jump_optimize_1): Don't increment LABEL_NUSES
        on deleted labels.

2000-05-22  Zack Weinberg  <zack@wolery.cumb.org>

        * varasm.c (eh_frame_section): Revert change to argument list.

Mon May 22 13:14:03 2000  Richard Kenner  <kenner@vlsi1.ultra.nyu.edu>

        * optabs.c (can_extend_p): Allow unsignedp to have any nonzero value.
        (gen_extend_insn, can_fix_p, can_float_p): Likewise.
        
        * final.c (final_scan_insn, case NOTE_INSN_FUNCTION_BEG): Remove
        dangling "else" that causes "break" to be conditional.
        Also remove unneeded code at start.

Mon May 22 17:31:35 2000  Philippe De Muyter  <phdm@macqel.be>

        * m68k/m68k.h (STORE_FLAG_VALUE): Macro set to (-1), not -1.
        * fx80/fx80.h, i370/i370.h, m88k/m88k.h (STORE_FLAG_VALUE): Ditto.
        * gmicro/gmicro.h, we32k/we32k.h (STORE_FLAG_VALUE): Ditto.

2000-05-22  Jakub Jelinek  <jakub@redhat.com>

        * config/sparc/sparc.md (movdf_insn_v9only_vis): fzero has
        just one argument.

Mon May 22 06:57:49 2000  Richard Kenner  <kenner@vlsi1.ultra.nyu.edu>

        * alias.c (record_component_aliases): New function.
        * tree.h: Clean up some declarations and comments.
        (record_component_aliases): New declaration.
        * tree.c (get_alias_set): If type and has alias set, use it.

2000-05-22  Richard Henderson  <rth@cygnus.com>

        * simplify-rtx.c (simplify_ternary_operation): Try to simplify
        IF_THEN_ELSE to a setcc form.
        * jump.c (can_reverse_comparison_p): Be prepared for insn null.

2000-05-21  Kaveh R. Ghazi  <ghazi@caip.rutgers.edu>

        * fixinc/inclhack.def (sun_malloc): Handle `calloc'.
        (sun_malloc, sysz_stdtypes_for_sun): Add test_text.

Sun May 21 16:42:31 2000  Richard Kenner  <kenner@vlsi1.ultra.nyu.edu>

        * combine.c (try_combine): Handle i3_subst_into_i2 case when I2 is
        not a PARALLEL.

2000-05-20  Alexandre Oliva  <aoliva@cygnus.com>

        * config/mn10300/mn10300.md (movdi, movdf): 64-bit clean-up.
        * config/mn10300/mn10300.c (print_operand): Likewise.

        * final.c (split_double): Right shift of negative values is not
        portable.

        * ifcvt.c (if_convert): Scan and kill dead code.

        * emit-rtl.c (unshare_all_rtl): Store the copied rtx.

2000-05-20  Zack Weinberg  <zack@wolery.cumb.org>

        * diagnostic.c: Eliminate implicit int.
        * except.c, gcc.c: Add static prototypes.
        * final.c (final_end_function): Mark file arg ATTRIBUTE_UNUSED.
        * gensupport.c (process_rtx): Use XVEC to initialize vector
        slot of 'split'.

        * print-rtl.c: If DEBUG_REGISTER_NAMES, define static 
        debug_reg_names instead of static reg_names.  If not, define
        global reg_names.
        * regclass.c: Don't define global reg_names unless
        DEBUG_REGISTER_NAMES is defined.

        * reload1.c (order_regs_for_reload): Remove unused variable.
        * varasm.c: Include output.h after defaults.h.  Define
        eh_frame_section as function of no args, not of unspecified args.

        * gcc.c: Constify argbuf; arguments to store_arg,
        process_command, main; elements of struct command and struct
        switchstr; local variables in execute, process_command, main.

2000-05-20  Bruce Korb  <bkorb@gnu.org>

        * fixinc/inclhack.def:  many applications of c_fix=format + tests
        * fixinc/check.diff:  regenerated
        * fixinc/fixincl.x:  regenerated

Sat May 20 09:30:55 2000  Richard Kenner  <kenner@vlsi1.ultra.nyu.edu>

        * alias.c: Clarify some comments.
        (record_base_value): REGNO is unsigned.
        * rtl.h (record_base_value): Likewise.

        * alias.c (aliases_everything_p): Don't special-case QImode here.
        * c-common.c (c_get_alias_set): Do it here.
        Handle BIT_FIELD_REF by getting alias info for arg.
        Use POINTER_TYPE_P.

2000-05-20  Alexandre Oliva  <aoliva@cygnus.com>

        * mklibgcc.in: Restore rule to create ${dir}.

Sat May 20 08:45:41 2000  H.J. Lu  <hjl@gnu.org>

        * Makefile.in (libgcc.mk): Depend on xgcc$(exeext) for
        GCC_FOR_TARGET used by MULTILIBS.
        * mklibgcc.in: Make sure each .o file depends on the
        directory it will be in.
        Make the multilib directory depends libgcc.

Sat May 20 08:29:28 2000  H.J. Lu  <hjl@gnu.org>

        * Makefile.in (bootstrap): Unset LANG_LIB2FUNCS for stage 1.

Sat May 20 07:27:35 2000  Alexandre Oliva  <aoliva@cygnus.com>

        * fold-const.c (make_range): Handle degenerated intervals.
        Fixes c-torture/execute/991221-1.c

Fri May 19 18:16:31 2000  Richard Kenner  <kenner@vlsi1.ultra.nyu.edu>

        * cse.c (cse_basic_block): Only call find_reg_note if REG_NOTES not 0.
        * reload.c (find_equiv_reg): Likewise.
        * alias.c (init_alias_analysis): Likewise.
        Only call prologue_epilogue_contains on insns.
        * basic-block.h (REG_SET_TO_HARD_REG_SET): Call new function.
        * bb-reorder.c (hard-reg-set.h): Include earlier.
        * haifa-sched.c (hard-reg-set.h): Likewise.
        * ifcvt.c (hard-reg-set.h): Likewise.
        * local-alloc.c (hard-reg-set.h): Likewise.
        * loop.c (hard-reg-set.h): Likewise.
        * predict.c (hard-reg-set.h): Likewise.
        * regrename.c (hard-reg-set.h): Likewise.
        * flow.c (hard-reg-set.h): Likewise.
        (reg_set_to_hard_reg_set): New function.
        * bitmap.c (regs.h, basic-block.h): No longer include.
        (bitmap.h): Now include.
        * conflict.c (hard-reg-set.h): Include.
        * profile.c (hard-reg-set.h): Likewise.
        * print-rtl.c (hard-reg-set.h): Likewise.
        * sbitmap.c (hard-reg-set.h): Likewise.
        * toplev.c (hard-reg-set.h): Likewise.
        * unroll.c (hard-reg-set.h, basic-block.h): Likewise.
        * hard-reg-set.h (reg_names): Now constant.
        * regs.h (reg_names): Likewise.
        * regclass.c (reg_names): Likewise.
        * loop.h (basic-block.h): No longer include.
        (bitmap.h): Now include.
        * reload1.c (order_regs_for_reload): Avoid loop over reg sets.
        * Makefile.in (LOOP_H, sbitmap.o, profile.o): Reflect above changes.
        (toplev.o, print-rtl.o, conflict.o, unroll.o, bitmap.o): Likewise.

2000-05-19  Jan Hubicka  <jh@suse.cz>
            Richard Henderson  <rth@cygnus.com>

        * basic-block.h (struct edge_def): New field "count".
        (struct basic_block_def): Likewise.
        * flow.c (entry_exit_blocks): Add count fileds.
        (split_edge): Keep count information up-to-date.
        (dump_edge_info, dump_flow_info): Dump count fields.

        * final.c (count_instrumented_edges): Rename to edge from arc.
        (end_final): Update users.
        * profile.c: Include expr.h, basic-block.h.
        (struct adj_list, ARC_TARGET, ARC_SOURCE, ARC_COUNT): Kill.
        (struct bb_info, label_to_bb, label_to_bb_size, bb_graph): Kill.
        (ignore_next_note, return_label_execution_count): Kill.
        (bbg_file_name, da_file_name): Kill.
        (edge_info, bb_info): New structures.
        (EDGE_INFO, BB_INFO, GCOV_INDEX_TO_BB, BB_TO_GCOV_INDEX): New macros.
        (count_instrumented_edges, total_num_edges): Rename to edge from arc.
        (total_num_edges_instrumented): Likewise.
        (init_arc, expand_spanning_tree): Kill.
        (fill_spanning_tree, tablejump_entry_p): Kill.
        (instrument_edges):  Rewrite from instrument_arcs to use
        commit_edge_insertions infrastructure.
        (compute_branch_probabilities): Remove arguments; rewrite for
        CFG infrastructure; use rtl_dump_file directly.
        (branch_prob, find_spanning_tree): Likewise.
        (union_groups, find_group): New.
        (init_branch_prob): Make bbg_file_name and da_file_name local.
        (end_branch_prob): Use rtl_dump_file directly.
        (init_edge_profiler): Rename to edge from arc.
        (output_arc_profiler): Kill.
        (gen_edge_profiler): New.
        (output_func_start_profiler): Turn off profiling.  Make the
        constructor static when we can.
        * rtl.h (branch_prob, end_branch_prob): Update prototypes.

        * toplev.c (DFI_flow): Remove.
        (DFI_cfg, DFI_life): New.
        (dump_file): Update accordingly.
        (compile_file): Call end_branch_prob if profile_arc_flag too.
        (rest_of_compilation): Move flow1 cfg creation to DFI_cfg.  Do edge
        profiling after the CFG is built.  Move flow1 life analysis to
        DFI_life.  Always estimate remaining probabilities.

2000-05-19  Richard Henderson  <rth@cygnus.com>

        * ifcvt.c (find_if_case_2): Don't allow THEN to be EXIT.

        * flow.c (make_edges): The sibling call edge to exit is abnormal.

2000-05-19  Richard Henderson  <rth@cygnus.com>

        * jump.c (redirect_jump): Add delete_unused argument.  Don't
        remove labels and code following when LABEL_NUSES goes to zero.
        (invert_jump): Likewise.
        (jump_optimize_1): Fix redirect/invert arguments.
        (do_cross_jump, thread_jumps): Likewise.
        * flow.c (split_edge): Likewise.
        * reorg.c (optimize_skip): Likewise.
        (reorg_redirect_jump, relax_delay_slots, dbr_schedule): Likewise.
        * profile.c (instrument_arcs): Likewise.
        * loop.c (find_and_verify_loops): Likewise.  Fix indentation.
        * rtl.h: Update prototypes.

Fri May 19 12:05:13 2000  Clinton Popetz  <cpopetz@cygnus.com>

        * ssa.c (convert_from_ssa): Tell life_analysis we need death 
        notes.
        (make_regs_equivalent_over_bad_edges): Only look at abnormal
        critical edges.

2000-05-19  Zack Weinberg  <zack@wolery.cumb.org>

        * cpphash.c (funlike_macroexpand): Make sure not to walk p1
        past l1 when deleting whitespace and markers.              

        * cpplex.c (_cpp_scan_until): Clear AUX field of tokens.
        * cpplib.c (do_unassert): Put the list to compare against on
        the stack.

2000-05-19  Bruce Korb  <bkorb@gnu.org>

        * fixinc/README:  cleaned up old documentation
        * fixinc/check.diff: regenerated & verified on OSR5 on ix86
        * fixinc/check.tpl: compute the list of needed directories
        emit "#if defined(name)" because of conflict
        omit machine name differences from output differences
        * fixinc/inclhack.def( m88k_multi_incl ):  Use `wrap' function
        (machine_name): change test text to use `sed' markers
        * fixinc/fixincl.x: regen

Fri May 19 06:49:35 2000  Richard Kenner  <kenner@vlsi1.ultra.nyu.edu>

        * config/elfos.h (SELECT_SECTION): Don't access DECL_INITIAL of
        a CONSTRUCTOR.

2000-05-18  Chris Demetriou  <cgd@sibyte.com>

        * gcc.texi (MULTILIB_EXCEPTIONS): Correct example and update
        it to match the current practice.

2000-05-18  Mark Mitchell  <mark@codesourcery.com>

        * Makefile.in (STAGESTUFF): Fix typo in spelling of s-under.

2000-05-18  Richard Henderson  <rth@cygnus.com>

        * rtlanal.c (insn_dependant_p, insn_dependant_p_1): New.
        * rtl.h (insn_dependant_p): Declare it.
        * loop.c (strength_reduce): Use it.

2000-05-18  Alexandre Oliva  <aoliva@cygnus.com>

        * config/mn10300/mn10300.c (expand_prologue, expand_epilogue):
        16-bit and 64-bit clean-up.

2000-05-18 Mark Elbrecht <snowball3@bigfoot.com>

        * configure.in (*-pc-msdosdjgpp): Set float_format to none.
        * configure: Rebuilt.

2000-05-18  Zack Weinberg  <zack@wolery.cumb.org>

        * genopinit.c: Use $ for escape sequences in optab patterns.
        Remove backslashes from optab patterns.  Change $A, $B, $C to
        expand to (int) whatever instead of just whatever; remove
        explicit (int) from all optab patterns.

        * gensupport.c (xmalloc, xrealloc, xstrdup): Provide.
        * genattr.c, genattrtab.c, gencodes.c, genconfig.c, genemit.c,
        genextract.c, genflags.c, genopinit.c, genoutput.c, genpeep.c,
        genrecog.c: Remove private copies of xmalloc, xrealloc, and
        xstrdup.

2000-05-18  Richard Henderson  <rth@cygnus.com>

        * jump.c (jump_optimize_1): Base minimum insn count during
        find_cross_jump on BRANCH_COST.

2000-05-18  Jakub Jelinek  <jakub@redhat.com>

        * print-rtl.c (print_rtx): Only print note line number as string
        if between NOTE_INSN_BIAS and NOTE_INSN_MAX.
        * final.c (final_scan_insn): Do nothing for note line number 0.

2000-05-18  Jakub Jelinek  <jakub@redhat.com>

        * gcc-common.c (ggc_mark_rtx_children): Mark NOTE_EXPECTED_VALUE
        from NOTE_INSN_EXPECTED_VALUE notes and NOTE_SOURCE_FILE from
        NOTE_INSN_DELETED_LABEL.

2000-05-18  Nick Clifton  <nickc@cygnus.com>

        * config/arm/unknown-elf.h (UNIQUE_SECTION): Place constant,
        uninitialised data in .rodata not .bss, and do not interpret an
        error in the initialisation value as meaning that the variable
        should be placed in the .bss section.

Thu May 18 12:10:18 2000  Philippe De Muyter  <phdm@macqel.be>

        * configure.in (NO_MINUS_C_MINUS_O): Test `$ac_cv_prog_cc_${ac_cc}_c_o',
        not `$ac_cv_prog_cc_cc_c_o'.
        * configure: Regenerated.

2000-05-18  Chris Demetriou  <cgd@sibyte.com>
            Richard Henderson  <rth@cygnus.com>

        * c-common.h (enum c_tree_index): Add g77 type entries.
        (g77_integer_type_node, g77_uinteger_type_node): New.
        (g77_longint_type_node, g77_ulongint_type_node): New.
        * c-decl.c (init_decl_processing): Initialize them.

2000-05-18  Richard Henderson  <rth@cygnus.com>

        * config/h8300/h8300.md (subs patterns): Use %G to negate.

        * config/h8300/h8300.c (ok_for_bclr): Take a HOST_WIDE_INT.
        (small_power_of_two): Likewise; use exact_log2.
        (adds_subs_operand, one_insn_adds_subs_operand): Remove.
        (output_adds_subs): Remove.
        (two_insn_adds_subs_operand): New.
        (split_adds_subs): New.
        * config/h8300/h8300-protos.h: Update.
        * config/h8300/h8300.h (CONST_OK_FOR_J): Cast to uns HOST_WIDE_INT.
        (CONST_OK_FOR_L): Match strict adds operands.
        (CONST_OK_FOR_N): Match struct subs operands.
        * config/h8300/h8300.md (adds_subs insns): Remove.
        (addhi patterns): Output adds/subs directly.
        (addsi_h8300h): Likewise.
        (addhi/addsi splitters): New.  Decompose two_insn_adds_subs_operand.

2000-05-18  Zack Weinberg  <zack@wolery.cumb.org>

        * cppexp.c (parse_assertion): New.
        (lex): Call it for CPP_HASH.  Remove CPP_ASSERTION case.
        (_cpp_parse_expr): Remove case '#'.  Don't set
        parsing_if_directive.
        * cpphash.c (collect_objlike_expansion,
        collect_funlike_expansion, collect_params,
        _cpp_create_definition): The list no longer has a trailing
        VSPACE token.
        * cpphash.h (enum node_type): Add T_ASSERTION.
        (struct hashnode): Remove aschain, add pred.
        (struct predicate): New.
        Update prototypes.

        * cpplex.c (expand_token_space): Handle both offset and
        nonoffset lists.
        (init_token_list, _cpp_free_token_list, _cpp_parse_assertion): Delete.
        (_cpp_init_toklist, _cpp_clear_toklist, _cpp_free_toklist,
        _cpp_slice_toklist, _cpp_squeeze_toklist, _cpp_equiv_tokens,
        _cpp_equiv_toklists): New.
        (_cpp_scan_line): Rename to _cpp_scan_until; add ability to
        stop at any single-character token, not just newline.
        (_cpp_lex_token): Remove special cases for #define and #if.
        (cpp_get_token): Expect # as a separate token type.  Remove
        DIRECTIVE case.
        (_cpp_get_directive_token): Remove DIRECTIVE case.
        (_cpp_lex_line, _cpp_lex_file, _cpp_init_input_buffer): Update.

        * cpplib.c (_cpp_check_directive): Set dirno and
        SYNTAX_INCLUDE bit of flags, not dir_handler and dir_flags.
        (_cpp_handle_directive): Run # <number> through the same logic
        as normal directives.
        (do_define): Don't set parsing_define_directive.  Use
        _cpp_scan_until.  The list does not have a VSPACE at the end.
        (do_if): Save, clear, and restore only_seen_white around 
        _cpp_parse_expr.
        (skip_if_group): s/CPP_DIRECTIVE/CPP_HASH/
        (do_assert, do_unassert): Rewrite.

        * cpplib.h (TTYPE_TABLE): Remove CPP_ASSERTION.
        (LIST_OFFSET): New flag.
        (struct cpp_toklist): Replace dir_handler and dir_flags with
        dirno and flags.
        (struct cpp_reader): Remove parsing_if_directive and
        parsing_define_directive.

2000-05-18  Kaveh R. Ghazi  <ghazi@caip.rutgers.edu>

        * fixinc/inclhack.def (broken_cabs): Update fix to handle comments
        following the cabs decl which terminate on the following line.
        Add the corresponding test_text case.

2000-05-18  Neil Booth  <NeilB@earthling.net>

        * cppinit.c (cpp_reader_init): Initialise col_adjust and
        default tab stop size.
        (no_num, OPT_ftabstop): New.
        (handle_option): Handle "ftabstop=" command-line option.
        (print_help): Document it.
        * cpplex.c (COLUMN): Remove.
        (handle_newline): Reset col_adjust.
        (skip_whitespace): Update col_adjust as tabs encountered.
        (_cpp_lex_line): Update to use col_adjust.  Call
        skip_whitespace for all whitespace.
        * cpplib.h (struct cpp_options): New member tabstop.
        (struct cpp_reader): New member col_adjust.
        (CPP_BUF_COL): Update.
        (CPP_BUF_COLUMN): New.
        * cpp.texi: Document "-ftabstop=" command line option.

Wed May 17 18:19:41 2000  Philippe De Muyter  <phdm@macqel.be>

        * configure.in (NO_MINUS_C_MINUS_O): Macro made availabe for AC_OUTPUT
        files.
        * configure: Rebuilt.

Wed May 17 18:06:12 2000  John David Anglin <dave@hiauly1.hia.nrc.ca>

        * mklibgcc.in Add missing -DL$name when compiling modules in libgcc1.c.

        * tree.c (build_common_tree_nodes): Do not build TI nodes unless
        HOST_BITS_PER_WIDE_INT is >= 64.

2000-05-17  Richard Henderson  <rth@cygnus.com>

        * jump.c (jump_optimize_1): Remove inactive but real insns
        in jump-to-next-insn optimization.

2000-05-17  Richard Henderson  <rth@cygnus.com>

        * toplev.c (rest_of_compilation): Don't call optimize_mode_switching
        unless OPTIMIZE_MODE_SWITCHING.  Conditionally set no_new_pseudos.
        Don't call recompute_reg_usage if no_new_pseudos is true.
        * lcm.c (optimize_mode_switching): Move ifdefs outside function.
        Return true if we did work; update global life information.
        * basic-block.h (optimize_mode_switching): Update decl.

2000-05-17  Neil Booth  <neilb@earthling.net>

        * cpplex.c (expand_name_space): Don't use ptrdiff_t.

2000-05-17  Zack Weinberg  <zack@wolery.cumb.org>

        * cpplib.c: New feature, #pragma system_header.
        * cpp.texi: Document special treatment of system headers, and
        the various mechanisms to get a header that special treatment.

2000-05-17  Kaveh R. Ghazi  <ghazi@caip.rutgers.edu>

        * system.h (offsetof): Define at the very end, to ensure we prefer
        the platform's definition if available.

2000-05-16  Bruce Korb  <bkorb@gnu.org>

        * fixinc/fixincl.c: improve the debug displays, ignore SIGPIPE
        * fixinc/server.c: likewise
        * fixinc/fixfixes.c( char_macro_def_fix ): fix regex
        + #ifdef debugging code + use #def constant for
        sub-pattern count
        * fixinc/inclhack.def( hpux11_fabsf ): Keep HP-UX 11 from stomping
        on C++ math namespace

2000-05-17  Kaveh R. Ghazi  <ghazi@caip.rutgers.edu>

        * fixinc/fixfixes.c (char_macro_use_fix, char_macro_def_fix):
        Don't check the return value of sprintf.  Use asprintf to avoid
        buffer overflows.

Wed May 17 17:27:44 2000  Andrew Cagney  <cagney@b1.cygnus.com>

        * flags.h (warn_unused_function, warn_unused_label,
        warn_unused_parameter, warn_unused_variable, warn_unused_value):
        Replace ``warn_unused''.
        (set_Wunused): Add declaration.
        * toplev.c (set_Wunused): New function.
        (warn_unused_function, warn_unused_label, warn_unused_parameter,
        warn_unused_variable, warn_unused_value): New variables.
        (W_options): Add -Wunused-function, -Wunused-function,
        -Wunused-label, -Wunused-parameter, -Wunused-variable and
        -Wunused-value.  Delete -Wunused.  Handled in decode_W_option.

        * toplev.c (decode_W_option): Update -Wunused flags by calling
        set_Wunused.
        * c-decl.c (c_decode_option): Ditto for -Wall.

        * stmt.c (expand_expr_stmt, expand_expr_stmt,
        warn_about_unused_variables): Replace warn_unused with more
        explicit warn_unused_value et.al.
        * function.c (expand_function_end): Ditto.
        * c-typeck.c (internal_build_compound_expr,
        internal_build_compound_expr): Ditto.
        * c-decl.c (poplevel, pop_label_level): Ditto.
        * toplev.c (check_global_declarations): Replace warn_unused with
        check for either warn_unused_function or warn_unused_variable.

        * gcc.1, invoke.texi (Warning Options): Document
        -Wunused-function, -Wunused-function, -Wunused-label,
        -Wunused-parameter, -Wunused-variable and -Wunused-value options.

Wed May 17 10:28:12 2000  Philippe De Muyter  <phdm@macqel.be>

        * mklibgcc.in (building libgcc1) [Xlibgcc1.a]: Find libgcc1.c in
        $(srcdir), not in the current directory.

2000-05-16  Richard Henderson  <rth@cygnus.com>

        * config/ia64/crtbegin.asm (__dso_handle): Mark hidden if the
        assembler supports it.
        (.fini, .init): Use a gp-relative indirect call.
        (__do_global_dtors_aux): Preserve the gp; rebundle.
        (__do_frame_setup): Likewise.
        * config/ia64/crtend.asm (.IA_64.unwind): Don't terminate with -1.
        (.init): Use a gp-relative indirect call.
        (__do_global_ctors_aux): Preserve the gp.

2000-05-16  Richard Henderson  <rth@cygnus.com>

        * flow.c (commit_one_edge_insertion): Be prepared for a return
        insn to be inserted on the edge with a normal jump.
        * jump.c (jump_optimize_1): Don't look to create return isns.

        * flow.c (flow_delete_insn): Don't adjust reference count of notes.
        * jump.c (jump_optimize_1): Likewise.
        (returnjump_p): Verify the argument is a JUMP_INSN.
        * rtl.def (NOTE): Add 5th element for NOTE_INSN_DELETED_LABEL.

2000-05-16  Nick Clifton  <nickc@cygnus.com>

        * config/m32r/m32r.c (small_insn_p): Use INSN_P() to replace
        GET_RTX_CLASS (GET_CODE ()) == 'i'.
        (large_insn_p): Ditto.
        (m32r_is_insn): New function: Return true if the insn contains
        an executable instruction.
        (m32r_adjust_insn): Use m32r_is_insn.
        (m32r_sched_reorder): Use m32r_is_insn.
        (m32r_sched_variable_issue): Use m32r_is_insn.

2000-05-16  Franz Sirl  <Franz.Sirl-kernel@lauterbach.com>

        * rs6000/rs6000.c (rs6000_select_section): Treat CONSTRUCTOR like
        VAR_DECL.

        * rs6000/sysv4.h (ASM_OUTPUT_DWARF_ADDR): Delete unused variable.

        * rs6000/sysv4.h (CPP_OS_LINUX_SPEC): Define __unix and __linux
        according to given options.

Tue May 16 12:17:31 2000  Jeffrey A Law  (law@cygnus.com)

        * mn10200.h (PREFERRED_RELOAD_CLASS): Do not prefer DATA_REGS
        if X has VOIDmode either.
        (LIMIT_RELOAD_CLASS): Similarly.

        * mn10200.md (indirect_jump, tablejump): Use "register_operand",
        not "general_operand" to match the processor's capabilities.

2000-05-16  Bruce Korb  <bkorb@gnu.org>

        * fixinc/README:  corrected return address
        * fixinc/check.diff:  regenerate, now that test works
        * fixinc/fixfixes.c(format_fix,format_write): reformatted
        (char_macro_def_fix,char_macro_use_fix): corrected and
        rewrote to use regex to parse the text
        * fixinc/inclhack.def: more testing
        * fixinc/fixincl.x:  regenerated

        * fixinc/inclhack.def: added several "test_text" attributes
        changed several fixes to use `c_fix = format'
        re-alphabetized the fixes

        * fixinc/check.diff: regenerate
        * fixinc/fixincl.x: regenerate
        * fixinc/check.tpl: added `sparc' and `netinet' to the list
        of created dirs


2000-05-16  Alexandre Oliva  <aoliva@cygnus.com>

        * config/mn10300/mn10300.h (ASM_OUTPUT_DWARF2_ADDR_CONST): Remove.

2000-05-15  Richard Henderson  <rth@cygnus.com>

        * toplev.c (rest_of_compilation): Run full jump pass before
        find_basic_blocks of flow2.

2000-05-15  Richard Henderson  <rth@cygnus.com>

        * jump.c: Fix typos and clarify commentary from last change.
        (any_condjump_p): Verify SET_SRC is an IF_THEN_ELSE.
        (safe_to_remove_jump_p): Remove.
        (condjump_label): Use pc_set.

2000-05-15  Richard Henderson  <rth@cygnus.com>

        * ifcvt.c (cond_exec_process_insns): Drop USE and CLOBBER insns
        that get in the way after reload.
        (cond_exec_process_if_block): Skip a label heading THEN block.

2000-05-15  Richard Henderson  <rth@cygnus.com>

        * varasm.c (output_constant_pool): Abort instead of converting
        (improperly) deleted labels to zero.

2000-05-16  Neil Booth  <NeilB@earthling.net>

        * cpplex.c (parse_string2): Update comment.
        (cpp_lex_line): No special assertion treatment for '('.
        * cpplib.c (DIRECTIVE_TABLE): Remove SYNTAX_ASSERT.
        * cpplib.h (SYNTAX_ASSERT): Remove.

Mon May 15 21:45:36 MET DST 2000  Jan Hubicka  <jh@suse.cz>

        * jump.c (condjump_p):  Mark as depreached.
        (any_condump_p): New.
        (any_uncondump_p): New.
        (pc_set): New.
        (safe_to_remove_jump_p): New.
        * rtl.h (any_condump_p, any_uncondjump_p, pc_set
        safe_to_remove_jump_p): Declare.

Mon May 15 21:07:20 MET DST 2000  Jan Hubicka  <jh@suse.cz>

        * calls.c: Re-install both patches reverted by last patch.
        (struct arg_data): New field tail_call_reg.
        (initialize_argument_information): Initialize tail_call_reg
        (load_register_parameters): New argument flags, use
        tail_call_reg when emiting tail call sequence.
        (expand_call): Update call of load_register_parameters;
        copy unadjusted_args_size to adjusted_args_size.

Mon May 15 19:01:42 MET DST 2000  Jan Hubicka  <jh@suse.cz>

        * loop.c (scan_loop, strength_reduce, loop_optimize): Change unroll_p
        and bct_p parameters to flags.
        * loop.h (LOOP_UNROLL, LOOP_BCT): New constants.
        * rtl.h (loop_optimize): Update prototype.
        * toplev.c (rest_of_compilation): Update call of loop_optimize.

2000-05-15  Jakub Jelinek  <jakub@redhat.com>

        * calls.c (expand_call): Move expand_start_target_temps call after
        start_sequence().

2000-05-15  Neil Booth  <NeilB@earthling.net>

        * cpphash.c (trad_stringify, warn_trad_stringify,
        collect_params): Make some pointers pointers to const.
        * cpplex.c (auto_expand_name_space) Guaranteed to always
        expand by at least one character.
        (SPELL_CHAR, SPELL_NONE): Temporarily reverse order.
        (struct token_spelling): Use const U_CHAR * rather than PTR.
        (expand_name_space): Fix up token pointers if name space
        is moved when expanding.
        (INIT_NAME, cpp_scan_line, parse_name, parse_number,
        parse_string2, save_comment, spell_token, cpp_output_list):
        Update so the routines handle tokens with a direct pointer to
        their text, rather than an offset into the token's list's namebuf.
        (_cpp_lex_line): Rearrange for clarity.

        * cpplib.c (_cpp_check_directive): Similarly.
        (do_define): Make SYM a pointer to const.
        * cpplib.h (struct cpp_name): Replace offset with direct pointer.
        (CPP_INT, CPP_FLOAT): Spelling type should be SPELL_IDENT.
        (TOK_OFFSET): Delete.
        (TOK_NAME): Update.

2000-05-14  Geoffrey Keating  <geoffk@cygnus.com>

        * config/rs6000/rs6000.h (RETURN_ADDRESS_OFFSET): Correct for
        64-bit ABI.

        * config/rs6000/rs6000.c (logical_operand): Rewrite to take MODE 
        into account.
        (logical_u_operand): Delete.
        (non_logical_cint_operand): Rewrite to take MODE into account.
        (non_logical_u_cint_operand): Delete.
        (boolean_operator): New function.
        (print_operand): Add new %q operand.
        * config/rs6000/rs6000.h (PREDICATE_CODES): Add boolean_operator,
        remove logical_u_operand and non_logical_u_cint_operand,
        update logical_operand and non_logical_cint_operand.
        * config/rs6000/rs6000.md: Rewrite the patterns for performing
        logical operations to use %q.

        * config/rs6000/rs6000.md (movsi): Don't modify RTL in-place.
        (movdi): Make similar to movsi.
        * config/rs6000/rs6000.h (ASM_OUTPUT_SPECIAL_POOL_ENTRY_P): There
        is no such thing as a DImode CONST_DOUBLE.
        * config/rs6000/rs6000.c (output_toc): Likewise.
        
        * config/rs6000/rs6000.c (output_cbranch): Don't output prediction
        codes when old mnemonics are in use.  Print register names
        for cc registers when requested.

        * optabs.c (expand_float): Don't allow mode widening that causes
        double rounding.

        * invoke.texi (RS/6000 and PowerPC Options): Update -m64/-m32
        flags to their current names -maix64 and -maix32.

2000-05-14  Bruce Korb  <bkorb@gnu.org>

        * fixinc/fixfixes.c(wrap_fix): new fix - inserts text before
        and/or after current text of file
        * fixinc/fixlib.c(must_malloc):
        * fixinc/fixlib.h(must_malloc): + reformatting
        * fixinc/inclhack.def: replace the "1i" and "$a" sed commands
        with usages of ``c_fix = wrap;''
        Add several tests and use the ``c_fix = format'' fixer more.
        * fixinc/fixincl.x: regen
        * fixinc/check.diff: regen
        * fixinc/check.tpl: emit the associated header with the missing
        test message

Sun May 14 17:58:59 2000  Hans-Peter Nilsson  <hp@axis.com>

        * mklibgcc.in (building libgcc1) [Xlibgcc1.a]: Do not use unset
        variables $src and $dst.
        
2000-05-13  Gabriel Dos Reis <gdr@codesourcery.com>

        * diagnostic.h (DIAGNOSTICS_SHOW_PREFIX_ONCE): New macro.
        (DIAGNOSTICS_SHOW_PREFIX_NEVER): Likewise.
        (DIAGNOSTICS_SHOW_PREFIX_EVERY_LINE): Likewise.
        (struct output_buffer: emitted_prefix_p, prefixing_rule): New
        fields. 
        (set_message_prefixing_rule): Declare.

        * diagnostic.c: (current_prefixing_rule): New variable.
        (set_message_prefixing_rule): Define.
        (output_set_prefix): Adjust buffer->emitted_prefix_p.
        (init_output_buffer): Adjust Initialization.
        (output_emit_prefix): Rewrite.  Take prefixing rules into account.
        
Sat May 13 11:05:47 2000  Philippe De Muyter  <phdm@macqel.be>

        * ifcvt.c (if_convert): Do not free NULL.

2000-05-12  Nick Clifton  <nickc@cygnus.com>

        * config/fr30/fr30.c (fr30_move_double): New function:  Emit code
        to move a double word value.
        (di_operand): New function: Return true if the operand is suitbale
        for a double word move operation.
        (nonimmediate_di_operand): New function: Return true if the
        operand is a DImode register or MEM.

        * config/fr30/fr30.h (PREDICATE_CODES): Add di_operand and
        nonimmediate_di_operand.

        * config/fr30/fr30-protos.h Add fr30_move_double, di_operand, and
        nonimmediate_di_operand.

        * config/fr30/fr30.md (movdi): New pattern.  Required because
        other patterns generate DImode results.
        (movdi_insn): New pattern.

2000-05-12  Richard Henderson  <rth@cygnus.com>

        * config/alpha/alpha.c (struct shadow_summary): Define
        bitfields as type unsigned int.

Sat May 13 00:09:59 2000  Denis Chertykov  <denisc@overta.ru>

        * config/avr/t-avr: Added definition of FLOAT while generates
        fp-bit.c

        * config/avr/avr.md: `NEXT_INSN (insn)' substituted to `insn' in
        peepholes for tst+jump = sbrs/sbrc optimization.

Fry May 12 20:03:00 CEST 2000  Jan Hubicka  <jh@suse.cz>

        * expr.c (emit_push_insn): Do not adjust stack pointer when
        preallocating.

Fri May 12 19:03:58 2000  Philippe De Muyter  <phdm@macqel.be>

        * ggc-simple.c (offsetof): Macro fallback definition moved from here ..
        * system.h (offsetof): ... to here.

2000-05-12  Richard Henderson  <rth@cygnus.com>

        * Makefile.in (final.o): Depend on BASIC_BLOCK_H.
        * final.c (final_end_function): Use app_disable.  Rearrange note
        handling into a switch.  Emit deleted labels.
        (output_asm_label): Generate label strings for deleted labels.
        * flow.c (tail_recursion_label_list): New.
        (find_basic_blocks_1): Set label_value_list directly.  Collect list
        of tail recursion labels from call_placeholders.  Don't add deleted
        labels to the label value list.
        (cleanup_cfg): Use free_EXPR_LIST_list.
        (flow_delete_insn_chain): Turn non-removable labels into notes.
        (flow_delete_block): Don't disable deleting the block because of
        a non-removable label.
        (tail_recursion_label_p): New.
        (merge_blocks_move_predecessor_nojumps): Don't disable the merge
        because of a label.
        (merge_blocks_move_successor_nojumps): Likewise.  Also move a
        jump table.
        (merge_blocks): Disable a merge because of tail recursion labels.
        * ifcvt.c (merge_if_block): Don't disable a merge because of a label.
        Use a more accurate measure of not merging the join block.
        (find_if_block): Don't disable conversion because of a label.
        (find_if_case_1, find_if_case_2): Likewise.
        * jump.c (duplicate_loop_exit_test): Preserve the kind of list
        element when copying.
        (squeeze_notes): Also leave EH notes.
        (mark_jump_label): Ignore deleted labels.  Use an INSN_LIST for
        REG_LABEL notes.
        (delete_insn): Preserve LABEL_NAME in NOTE_SOURCE_FILE when
        deleting a label.
        * print-rtl.c (print_rtx): Print NOTE_SOURCE_FILE for
        NOTE_INSN_DELETED_LABEL.  Print `[# deleted]' for a label_ref
        referring to a deleted label.  Convert tail handling to a switch.
        * rtl.def (CODE_LABEL): Rearrange elements to be compatible with NOTE
        for NOTE_INSN_DELETED_LABEL.
        (NOTE): Fix commentary.
        * rtl.h (REG_LABEL): Update commentary wrt INSN_LIST.
        (REG_CC_SETTER, REG_CC_USER, REG_LIBCALL): Likewise.
        (CODE_LABEL_NUMBER, LABEL_NAME): Update index.
        (LABEL_NUSES, LABEL_REFS): Likewise.
        * unroll.c (copy_loop_body): Don't copy NOTE_INSN_DELETED_LABEL.

2000-05-12  Bruce Korb  <bkorb@gnu.org>

        * fixinc/fixfixes.c(format_write): buglet & relaxed rules
        * fixinc/check.diff: updated
        * fixinc/inclhack.def: corrected & added some test_text-s
        * fixinc/genfixes: removed unneeded options to autogen invocation
        * fixinc/fixincl.tpl: Specified the output file
        * fixinc/fixfixes.c: visual appearance
        * fixinc/fixincl.x: regenerate

2000-05-12  Zack Weinberg <zack@wolery.cumb.org>

        * fixinc/fixfixes.c (IO_use_fix, IO_defn_fix, CTRL_use_fix,
        CTRL_defn_fix): Delete.
        (fix_char_macro_defines, fix_char_macro_uses): Rename to
        char_macro_def_fix and char_macro_use_fix, respectively.  Put
        them into the FIXUP_TABLE.  Get the string to search for from
        a c_fix_arg.

        (format_write): New function.
        (format_fix): Use it.

        (FIX_PROC_HEAD): Constify text parameter.
        (machine_name_fix): Constify all char *s.
        * fixtests.c (skip_quote): Remove double static.

        * inclhack.def (io_def_quotes, io_use_quotes, ctrl_def_quotes,
        ctrl_use_quotes): Update for new scheme.
        * fixincl.x: Regenerate.

2000-05-12  Alexandre Oliva  <aoliva@cygnus.com>

        * config/mn10300/mn10300.h (PREFERRED_DEBUGGING_TYPE): Redefine as
        DWARF2_DEBUG.
        (DWARF2_ASM_LINE_DEBUG_INFO): Define.
        (ASM_OUTPUT_DWARF2_ADDR_CONST): Define.

2000-05-11  Robert Lipe <robertlipe@usa.net>

        * fixinc/inclhack.def (hpux8_bogus_inlines): Delete bypass for SCO.
        * fixincl.x: Regenerate.

2000-05-11  Richard Henderson  <rth@cygnus.com>

        * calls.c: Revert both 05-09 patches.

2000-05-11  Alexandre Oliva  <aoliva@cygnus.com>

        * config/mn10300/mn10300.c (print_operand): Print FP constants in
        hexadecimal.
        * config/mn10300/mn10300.md (movsf, movdf): Use the `F' constraint
        for FP values.

        * mklibgcc.in (EQ): Define it to an equal sign in the Makefile,
        and replace any occurrences of `=' in multilib dirs with `$(EQ)'.

2000-05-11  Jason Merrill  <jason@casey.cygnus.com>

        * fixinc/fixincl.c (run_compiles): Don't crash on null pz_machine.

2000-05-11  Zack Weinberg  <zack@wolery.cumb.org>

        * fixinc/fixfixes.c, fixinc/fixtests.c: Update commentary.

Thu May 11 22:28:05 2000  Denis Chertykov  <denisc@overta.ru>

        * config/avr/avr-protos.c (jump_over_one_insn_p): New declaration.
        * config/avr/avr.c (jump_over_one_insn_p): New function.
        * config/avr/avr.md: New peepholes added. Output test and
        conditional jump to "sbrc" or "sbrs" command.

2000-05-11  Mark Elbrecht  <snowball3@bigfoot.com>

        * cppmain.c (main): Use IS_DIR_SEPARATOR.

2000-05-11  Jakub Jelinek  <jakub@redhat.com>

        * except.c (find_exception_handler_labels_1): New function.
        (find_exception_handler_labels): Split into two functions, dive
        into CALL_PLACEHOLDERs when looking for exception handler labels.

2000-05-11 Stan Cox <scox@cygnus.com>

        * regrename.c (replace_reg_in_block): Improve REG_DEAD handling.
        * timevar.def (TV_RENAME_REGISTERS): Move before TV_SCHED2.
        * toplev.c (rest_of_compilation): Call regrename_optimize before sched2.

2000-05-11  Bruce Korb  <bkorb@gnu.org>

        * fixinc/fixfixes.c (double_slash_fix):  obsolete
        (else_endif_label_fix): obsolete
        (format_fix):  new, unused as yet
        (main): obsolete
        * fixinc/fixlib.h: added fix description struct for use by format_fix
        * fixinc/fixincl.c: removed the struct & test for SIGIOT befure using
        * fixinc/Makefile.in:  compile fixfixes.c and fixtests.c as separate
        modules.  Removed the vestiges of the script version.
        Added support for "make check".
        * fixinc/check.diff: base diff file (needs work!!)
        * fixinc/check.tpl: quiet the fixup output
        * fixinc/fixtests.c (main): obsolete
        * fixinc/fixincl.sh:  don't bother copying fixincl to ..
        * fixinc/fixincl.tpl:  provide for arguments to c_fix routines

Thu May 11 11:57:02 MET DST 2000  Jan Hubicka <jh@suse.cz>

        * toplev.c (rest_of_compilation): Remove dead code after
        combine.

2000-05-11  Zack Weinberg  <zack@wolery.cumb.org>

        * cpphash.c (collect_funlike_expansion): Make "# is not
        followed by a macro argument name" a pedwarn, not an error.
        Preserve the # in the output.  Suppress the warning if lang_asm.

Thu May 11 01:19:31 2000  Jeffrey A Law  (law@cygnus.com)

        * configure.in (hppa*64*-*-hpux11*): New target for PA64 support.
        * configure: Rebuilt.

2000-05-10 Laurynas Biveinis <lauras@softhome.net>

        * i386/xm-djgpp.h (XREF_FILE_NAME): Add mising brace.

2000-05-10  Kazu Hirata  <kazu@hxi.com>

        * combine.c (try_combine): Fix a typo.

Wed May 10 21:31:44 2000  Jim Wilson  <wilson@cygnus.com>

        * config/ia64/ia64.md (insv): Add comment.

2000-05-10  Richard Henderson  <rth@cygnus.com>

        * Makefile.in (libgcc.a, stmp-multilib): Depend on FPBIT and DPBIT.
        * mklibgcc.in: Rewrite to not use functions.  Don't shortcut
        dependancies on FPBIT and DPBIT.

2000-05-10  Nick Clifton  <nickc@redhat.com>

        * flow.c (find_auto_inc): Do not bias REG_N_REFS by loop_depth
        when optimising for size.
        (mark_used_regs:) Ditto.
        (try_pre_increment_1): Ditto.

2000-05-10  Zack Weinberg  <zack@wolery.cumb.org>

        * cppexp.c (lex): Use %.*s to print non-NUL-terminated string.
        Make error message friendlier.

        * cpphash.h (struct hashnode): Use struct hack for name
        member.
        * cpphash.c (struct hashdummy): New.
        (eq_HASHNODE): Second argument is a hashdummy, not a HASHNODE.
        (make_HASHNODE): No need to set ->name pointer.  Correct
        setting of p.
        (cpp_lookup): Make 'dummy' a struct hashdummy.  Tidy up a bit.

2000-05-10  Richard Henderson  <rth@cygnus.com>

        * flow.c (find_basic_blocks_1): Remove any spare bb_note
        after completion.

2000-05-10  Bruce Korb  <bkorb@gnu.org>

        * fixinc/gnu-regex.c:  reg_syntax_t re_syntax_options must be static

2000-05-10  Eric Schweitz  <schweitz@nortelnetworks.com>

        * dwarfout.c (dwarfout_finish): Call retry_incomplete_types
        after we enter .debug.

2000-05-10  Jason Merrill  <jason@casey.cygnus.com>

        * dwarf2out.c (gen_subprogram_die): Fixup die_parent for the
        abstract instance of a nested inline function.

        * stor-layout.c (finish_record_layout): finalize_type_size
        before laying out the pending_statics.

Wed 10 May 09:36:47 2000  Neil Booth  <NeilB@earthling.net>

        * cpplex.c (spell_token): New function.
        (spell_string, spell_comment, spell_name): fold into
        spell_token.    
        (I, S): Add macros.
        (E, H): Remove macros.
        (save_comment): Save comment opening characters too.
        (_cpp_lex_file): Update to use spell_token.  Tidy up comment
        handling.
        * cpplib.h (I, S): Add macros.
        (E, H): Remove macros.
        (TTYPE_TABLE): Update entries for new speller.
        (SYNTAX_ASSERT): Remove.

Wed 10 May 09:08:30 2000  Neil Booth  <NeilB@earthling.net>

        * cpplex.c (_cpp_lex_line): Maintain PREV_WHITESPACE flag
        when removing escaped newlines.  Reverse sense of test for
        escaped newline.

2000-05-09  Richard Henderson  <rth@cygnus.com>

        * flow.c (find_basic_blocks_1): Do not delete the first
        bb_note we run across.
        (create_basic_block): Use reorder_insns to move an existing
        bb_note to the correct place.

2000-05-09  Richard Henderson  <rth@cygnus.com>

        * calls.c (expand_call): Increment currently_expanding_call
        before calling optimize_tail_recursion.

Tue May  9 18:54:16 2000  Richard Kenner  <kenner@vlsi1.ultra.nyu.edu>

        * reload1.c (reload_combine): Fix errors in last change.

2000-05-09  Zack Weinberg  <zack@wolery.cumb.org>

        * gcc.c (used_arg): Skip over a semicolon at the end of the
        split-up loop; don't break out of it.

        * Makefile.in (WARN_CFLAGS): Add -Wwrite-strings.
        (tree.o): Depend on output.h.

        * c-decl.c (pending_invalid_xref_file,
        current_function_prototype_file): Constify.
        (pushdecl): Constify a local char *.
        (define_label): Constify filename parameter.
        * c-lex.c (init_parse): Constify parameter and return value.
        * c-typeck.c (c_expand_asm_operands): Constify filename parameter.
        * c-tree.h: Update prototypes.
        * c-parse.in: Constify filename member of %union, and if_stmt_file.
        * c-parse.y, c-parse.c, c-parse.h, objc/objc-parse.y,
        objc/objc-parse.c: Regenerate.

        * dwarfout.c (dwarfout_init): Constify main_input_filename parameter.
        * dwarfout.h: Update prototypes.
        * expr.c (expand_expr): Constify a local char *.
        * flags.h: Constify main_input_filename.
        * function.c (expand_function_end): Constify filename parameter.
        * genrecog.c (make_insn_sequence): Use a character array for
        c_test_pos.
        (main): Remove unused variables.
        * input.h: Constify input_filename, main_input_filename, and
        file_stack.name.  Update prototypes.
        * output.h: Declare first_global_object_name and
        weak_global_object_name here, as const char *.
        * stmt.c (expand_asm_operands): Constify filename parameter.
        * toplev.c (compile_file, push_srcloc, debug_start_source_file):
        Constify filename parameter.
        (input_filename, main_input_filename): Constify.
        * toplev.h: Update prototypes.
        * tree.c: Include output.h.  Don't declare
        first_global_object_name or weak_global_object_name.  Clean up string
        bashing in get_file_function_name_long.
        * tree.h (struct tree_decl): Constify filename member.
        (input_filename): Constify.
        Update prototypes.
        * varasm.c (first_global_object_name, weak_global_object_name):
        Constify.
        (assemble_start_function, assemble_variable): Clean up string bashing.

        * gcc.c: Constify all spec-related strings initialized,
        transitively, from string constants.  Constify all strings
        and string variables related to multilibs.
        (set_spec, read_specs): Cast argument to free to PTR.
        (used_arg): Do not modify multilib_matches.  Use strncmp plus
        length comparison to compare multilib switches.
        * genmultilib: Constify everything declared in multilib.h.

Tue May  9 22:28:03 2000  Denis Chertykov  <denisc@overta.ru>

        * flow.c (flow_delete_insn): Use INSN_DELETED_P for marking insn
        as deleted.

Tue May  9 20:52:43 2000  Denis Chertykov  <denisc@overta.ru>

        * config/avr/avr-protos.h (extra_constraint): change a type of
        second argument from char to int to avoid warnings.
        (asm_output_byte): Likewise.
        
        * config/avr/avr.c (MAX_LD_OFFSET) New macro.
        (initial_elimination_offset): Handle elimination from
        FRAME_POINTER_REGNUM to STACK_POINTER_REGNUM.
        (legitimate_address_p): Use MAX_LD_OFFSET.
        (legitimize_address): Likewise.
        (out_movqi_r_mr): Likewise.
        (out_movhi_r_mr): Likewise, use `fatal_insn' instead of `fatal'.
        (out_movsi_r_mr): Use MAX_LD_OFFSET.
        (out_movsi_mr_r): Likewise.
        (out_movqi_mr_r): Likewise.
        (out_movhi_mr_r): Likewise.
        (notice_update_cc): Correct CC for the ashrqi3 with the shift
        count as CONST_INT != 6.
        (ashlqi3_out): Coding style modifications. Run `fatal_insn' if
        shift count is a CONSTANT_P, but not a CONST_INT.
        (ashlhi3_out): Coding style modifications.
        (ashlsi3_out): Likewise.
        (ashrhi3_out): Likewise.
        (ashrsi3_out): Likewise.
        (lshrhi3_out): Likewise.
        (lshrsi3_out): Likewise.
        (ashrqi3_out): Generate shift for any known constant count without
        scratch register. Run `fatal_insn' if shift count is a CONSTANT_P,
        but not a CONST_INT.
        (lshrqi3_out): Coding style modifications. Run `fatal_insn' if
        shift count is a CONSTANT_P, but not a CONST_INT. 
        (extra_constraint): change a type of
        second argument from char to int to avoid warnings.
        (asm_output_byte): Likewise.
        (asm_file_end): Output size generated commands count as a hex
        number too.

        * config/avr/avr.h (RETURN_ADDR_RTX): New macro.

        * config/avr/avr.md (addhi3): Fragment commented by &&0 is
        removed.
        (ashlqi3): Values of "length" attribute changed. Shift count
        uses constraints 'n' instead of 'i'.
        (ashrqi3): Likewise. Values of "cc" attribute changed. Generate
        shifts without clobber register.
        (lshrqi3): Shift count uses constraints 'n' instead of 'i'.
        (call_insn): Correct test for which_alternative == 1 (was 0).
        (call_value_insn): Likewise.
        
        * config/avr/t-avr: Remove definition of FLOAT while generates
        fp-bit.c

2000-05-09  Bruce Korb  <bkorb@gnu.org>

        * fixinc/check.tpl:  Template for checking fixes
        * fixinc/inclhack.def:  Added 'test_text' for many fixes
        disable hpux8_bogus_inlines on SCO
        * fixinc/fixinc.sco:  Oh, yes, we don't need this any more.

Tue May  9 16:30:27 MET DST 2000  Jan Hubicka  <jh@suse.cz>

        * calls.c (expand_call): Reorganize somewhat in order
        to avoid unnecesary recalculation inside loop and make
        tail call failure code cleaner.
        
Tue May  9 06:30:20 2000  Richard Kenner  <kenner@vlsi1.ultra.nyu.edu>

        * alias.c (nonlocal_reference_p): Minor reformatting.
        * reload.c (find_equiv_reg): Simplify logic for
        CALL_INSN_FUNCTION_USAGE since can't have SUBREG or pseudos and
        some some reformatting.
        * reload1.c (reload_combine): Don't assume everything in
        CALL_INSN_FUNCTION_USAGE is a REG and clean up code a bit.

2000-05-08  Richard Henderson  <rth@cygnus.com>

        * final.c (current_insn_predicate): New.
        (final_scan_insn): Set it.
        * output.h (current_insn_predicate): Declare.

        * ifcvt.c (cond_exec_process_insns): New argument prob_val.
        Attach it to call insns.
        (cond_exec_process_if_block): Track probability for true and
        false branches.
        (dead_or_predicable): Likewise.

        * predict.c (PROB_NEVER, PROB_VERY_UNLIKELY): New.
        (PROB_UNLIKELY, PROB_EVEN, PROB_LIKELY): New.
        (PROB_VERY_LIKELY, PROB_ALWAYS): New.
        (estimate_probability, expected_value_to_br_prob): Use them.

        * config/ia64/ia64-protos.h (ia64_expand_prediction): Declare.
        * config/ia64/ia64.c (ia64_print_operand_address): Handle 'j'.
        (ia64_expand_prediction): New.
        (emit_insn_group_barriers): Don't look at notes.  Emit barriers
        as needed after calls.
        (ia64_epilogue_uses): Mark b0 used.
        * config/ia64/ia64.md (beq_true, beq_false): Remove.
        (bne_true, bne_false): Remove.
        (eq_return, eq_not_return, ne_return, ne_not_return): Remove.
        (br_true, br_false): New.  Use predicate_operator and
        ia64_expand_prediction.
        (return_true, return_false): Likewise.
        (call_internal): Use ia64_expand_prediction.  Don't emit stop bit.
        (call_internal1, call_value_internal): Likewise.
        (call_value_internal1, call_multiple_values_internal1): Likewise.

        * config/ia64/ia64.c (ia64_direct_return): Require frame size zero.

        * config/ia64/ia64.md (extendsfdf2): Split only after reload.

2000-05-08  Richard Henderson  <rth@cygnus.com>

        * rtlanal.c (may_trap_p): Consider old-style and volatile
        asms to trap.

Mon May  8 17:16:48 2000  Jim Wilson  <wilson@cygnus.com>

        * config/ia64/ia64.h (RETURN_ADDR_RTX): Use COUNT not count.

2000-05-08  Richard Henderson  <rth@cygnus.com>

        * config/ia64/ia64.h (predicate_operator): Declare.

        * config/ia64/ia64.md (extendsfdf2): Split the nop case out
        of existance.

        * gensupport.c (process_rtx): Copy and post-process each member
        of the define_insn rtvec individually.

Mon  8 May 22:17:35 2000  Neil Booth  <NeilB@earthling.net>

        * cpplex.c (spell_token): New function.
        (TOKEN_LEN): Add 1 for whitespace.
        (_cpp_lex_file): Update to use spell_token.
        * cpplib.h (E): Remove.
        (TTYPE_TABLE): Update CPP_VSPACE entry.

2000-05-08  Richard Henderson  <rth@cygnus.com>

        * flow.c (init_propagate_block_info): Watch out for conditional
        branch to next instruction, and thus one outgoing edge.

        * config/ia64/ia64.c (ia64_encode_section_info): Exit early
        for global register variables; don't special case __[CD]TOR_LIST__;
        mind ggc_p for string allocation.

2000-05-08  Nick Clifton  <nickc@cygnus.com>

        * config/i386/i386.h (ELIMINABLE_REGS): Fix comment.

2000-05-08  Bruce Korb  <bkorb@gnu.org>

        * fixinc/mkfixinc.sh:  fixinc.sco is no longer used
        i?86-*-msdosdjgpp* no longer uses fixincludes
        * fixinc/genfixes:  inclhack.sh and fixincl.sh are no longer generated
        * fixinc/inclhack.sh:  deleted
        * fixinc/hackshell.tpl:  deleted
        * fixinc/inclhack.tpl:  deleted
        * fixinc/Makefile.in:  Remove dependencies on above
        * fixinc/fixincl.sh:  "DO NOT EDIT" text modified

2000-05-08  Andreas Jaeger  <aj@suse.de>

        * config/mips/linux.h: Remove undefines which disabled .ctor/.dtor
        support.

2000-05-07  Zack Weinberg  <zack@wolery.cumb.org>

        * Makefile.in (LOOSE_CFLAGS): Add /g modifiers to both sed
        substitutions.

Sun  7 May 08:43:53 2000  Neil Booth  <NeilB@earthling.net>

        * cpplex.c: Move new lexer definitions and prototypes
        to top.  Conditional include these and the code if
        NEW_LEXER is defined.  Rename functions whose names
        clash if this code included.

Sun May  7 00:54:57 EDT 2000  John Wehle  (john@feith.com)

        * rtl.def (COND_EXEC): Clarify.

        * i386.md (extendsidi2): Clobber (reg:CC 17) in the
        same fashion as zero_extendsidi2.

2000-05-06  Richard Henderson  <rth@cygnus.com>

        * config/ia64/ia64.c (predicate_operator): New.
        (ia64_print_operand): Handle 'J'.
        (rtx_needs_barrier): Handle COND_EXEC.
        * config/ia64/ia64.h (BRANCH_COST): Define.
        (PREDICATE_CODES): Update.
        * config/ia64/ia64.md: Docuement used unspec values.
        (attr predicable): New.
        (movxf, movxf_internal): New.
        (extendsfdf2): Don't comment out nop.
        (floatdidf2): Remove.
        (truncxfsf2, truncxfdf2, floatdixf2): New.
        (abssi2, absdi2): Put the neg in the "true" slot.
        (conditional branch instructions): Mark not predicable.
        (cmov*_internal): Use predicate_operator.  Split to cond_exec.
        (abs*_internal): Likewise.
        (alloc, set_bsp): Mark not predicable.
        (barrier, insn_group_barrier, flush_cache): Likewise.
        (define_cond_exec): New.

2000-05-06  Richard Henderson  <rth@cygnus.com>

        * c-decl.c: Include "tm_p.h".

        * config/ia64/ia64-protos.h: Rearrange decls to reduce ifdef madness.
        (fetchadd_operand, ia64_expand_fetch_and_op): Declare.
        (ia64_expand_op_and_fetch): Declare.
        * config/ia64/ia64.c: Include "toplev.h".  Kill trailing whitespace.
        (setjmp_operand): Constify variables for XSTR.
        (ia64_encode_section_info): Likewise.
        (ia64_print_operand): Use %d for exact_log2; cast 32-bit printed
        values to int.
        (ia64_asm_output_external): Constify name.
        (process_set): Use HOST_WIDE_INT_PRINT_DEC for frame size.
        (process_for_unwind_directive): Provide switch default.
        (ia64_expand_compare_and_swap): Remove unused variables.
        (ia64_expand_builtin): Likewise.
        * config/ia64/ia64.h (ASM_OUTPUT_BYTE): Mask and cast value to int
        for printing.

        * config/ia64/ia64.c (sdata_symbolic_operand): Mark unused args.
        (symbolic_operand, function_operand, setjmp_operand): Likewise.
        (shift_count_operand, shift_32bit_count_operand): Likewise.
        (shladd_operand, fetchadd_operand, ia64_function_prologue): Likewise.
        (ia64_function_epilogue, ia64_setup_incoming_varargs): Likewise.
        (ia64_function_arg_partial_nregs, ia64_function_value): Likewise.
        (ia64_print_operand_address, ia64_secondary_reload_class): Likewise.
        (ia64_expand_builtin): Likewise.
        (call_multiple_values_operation): Make dest_regno unsigned.

2000-05-06  Richard Henderson  <rth@cygnus.com>

        * rtl.def (DEFINE_COND_EXEC): New.
        * md.texi: Document it.

        * gensupport.c (input_file): Remove.
        (struct queue_elem): Add lineno.
        (rtx_ready_queue): Remove.
        (errors): New.
        (predicable_default): New.
        (predicable_true, predicable_false): New.
        (define_attr_queue, define_attr_tail): New.
        (define_insn_queue, define_insn_tail): New.
        (define_cond_exec_queue, define_cond_exec_tail): New.
        (other_queue, other_tail): New.
        (queue_pattern): New.
        (process_rtx): Add patterns to the appropriate queues.
        (is_predicable, identify_predicable_attribute): New.
        (n_alternatives, collect_insn_data): New.
        (alter_predicate_for_insn, alter_test_for_insn): New.
        (shift_output_template, alter_output_for_insn): New.
        (process_one_cond_exec, process_define_cond_exec): New.
        (init_md_reader): Read the entire file.  Process define_cond_exec.
        (read_md_rtx): Return elements from the queues.

2000-05-06  Richard Henderson  <rth@cygnus.com>

        * flow.c (mark_set_1): Don't update conditional life info
        if the register is not_dead.

2000-05-06  Zack Weinberg  <zack@wolery.cumb.org>

        * Makefile.in (STAGESTUFF): Add genrtl.c and genrtl.h.
        (mostlyclean): Also delete fixincl, fixinc.sh, and
        specs.ready, and make clean in the fixinc subdir.

2000-05-06  Richard Henderson  <rth@cygnus.com>

        * Makefile.in (gensupport.o): Compile for the host.
        (host-prefix gensuuprt.o): Remove.
        (genflags.o): Depend on gensupport.h and OBSTACK_H.
        (genattrtab.o): Likewise.
        (gencodes.o): Depend on gensupport.h.
        (genemit.o, genopinit.o, genrecog.o, genextract.o): Likewise.
        (genpeep.o, genattr.o, genoutput.o): Likewise.

        * gensupport.c (obstack, rtl_obstack): New.
        (init_md_reader): Initialize rtl_obstack.
        * gensupport.h (rtl_obstack): Declare.
        (message_with_line): Declare.

        * genattr.c: Remove all traces of obstack manipulation.
        * gencodes.c, genconfig.c, genemit.c, genextract.c: Likewise.
        * genopinit.c, genoutput.c, genpeep.c, genrecog.c: Likewise.

        * genattrtab.c (obstack, rtl_obstack): Remove.
        (main): Don't init rtl_obstack.
        * genflags.c: Likewise.

        * genrecog.c (message_with_line): Move ...
        * gensupport.c: ... here.

2000-05-06  Richard Henderson  <rth@cygnus.com>

        * c-typeck.c (build_c_cast): Remove dead code.

2000-05-06  Richard Henderson  <rth@cygnus.com>

        * flow.c (split_edge): Don't allocate global_live_at_start for
        the new block unless the old blocks had them as well.

        * flow.c (mark_set_1): Respect not_dead when updating reg_live.

        * ifcvt.c (noce_process_if_block): Don't use an insn_b from
        test_bb if a or b uses x.

2000-05-06  Zack Weinberg  <zack@wolery.cumb.org>

        * cpphash.h: Remove conditional #define of __extension__.
        * rtl.h: Add __extension__ to RTL_CHECK1, RTL_CHECK2,
        RTL_CHECKC1, RTL_CHECKC2, and RTVEC_ELT macros
        (ENABLE_RTL_CHECKING only).
        * tree.h: Add __extension__ to TREE_CHECK, TREE_CLASS_CHECK,
        CST_OR_CONSTRUCTOR_CHECK, and EXPR_CHECK macros
        (ENABLE_TREE_CHECKING only).
        * varray.h: Add __extension__ to VARRAY_CHECK macro
        (ENABLE_CHECKING only).

2000-05-06  Richard Earnshaw (reanrsha@arm.com)

        Use new tail-calling mechanism on ARM.
        * arm.md (sibcall, sibcall_value): New expands.
        (sibcall_insn, sibcall_value_insn, sibcall_epilogue): New insns.
        (tailcalling peepholes): Delete.
        (push_multi): Simplify.
        * arm.c (lr_save_eliminated): Delete definition.
        (pattern_really_clobbers_lr, function_really_clobbers_lr): Delete.
        (output_return_instruction): Remove checks on lr_save_eliminated.
        (output_arm_prologue): Remove old tail-calling code.
        (arm_output_epilogue): New parameter, really_return.  All callers
        changed.  Handle tail-calling epilogues.
        * arm.h (lr_save_eliminated): Delete declaration.
        (frame_pointer_needed): Delete declaration.
        * arm-protos.h (arm_output_epilogue): Adjust prototype.

        * arm.md (is_thumb): Examine symbol thumb_code, not expression
        TARGET_ARM.
        * arm.c (thumb_code): Define it.
        (arm_override_options): Set it.
        * arm.h (thumb_code): Declare it.
        
2000-05-06  Richard Earnshaw (reanrsha@arm.com)

        * arm-protos.h (arm_dllexport_name_p, arm_dllimport_name_p): Constify.

2000-05-06  Richard Earnshaw (reanrsha@arm.com)

        * arm.c (arm_gen_load_multiple, arm_gen_store_mulitple): Don't add
        bogus clobber to insns.
        (load_multiple_operation, store_mulitple_operation): Don't check 
        for it.
        * arm.md (ldmsi_postinc, stmsi_postinc): Adjust accordingly.

        * arm.md (and_scc, ior_scc): Add missing mode.

        * arm.md (call_value_symbol): Remove predicate from op2.

        * arm.h (SPECIAL_MODE_PREDICATES): Define.
        
Sat May  6 06:25:56 2000  Richard Kenner  <kenner@vlsi1.ultra.nyu.edu>

        * expr.c (get_subtarget): New function.
        (force_operand, expand_expr, do_store_flag): Use it.

        * toplev.c (compile_file): Don't take strlen of NAME if null.

2000-05-06  David Edelsohn  <edelsohn@gnu.org>

        * xcoffout.c (xcoff_current_include_file,
        xcoff_current_function_file, xcoff_lastfile): Constify char *.
        (xcoffout_source_file, xcoffout_source_line): Make filename 'const
        char *'.
        (xcoffout_declare_function): Make name 'const char *'.
        (xcoffout_end_epilogue): Make fname 'const char *'
        * xcoffout.h (xcoff_current_include_file, xcoff_lastfile,
        xcoffout_declare_function, xcoffout_source_line): Match above.

        * aix43.h (SUBTARGET_OVERRIDE_OPTIONS): -mpowerpc64 without
        -maix64 is error.
        * rs6000.c (print_operand): Fix lossage typo.
        (output_cbranch): Remove "cr" decoration for now.
        * rs6000.h (ASM_OUTPUT_DEF_FROM_DECLS): Make alias 'const char *'. 

Sat May  6 06:55:32 2000  Denis Chertykov  <denisc@overta.ru>

        * config/avr/avr.c (out_shift_with_cnt): Bugfix for shift by
        constant count.

2000-05-05  Bruce Korb  <bkorb@gnu.org>

        * fixinc/genfixes: Improve the matching for make target names

2000-05-05  Catherine Moore  <clm@cygnus.com>

        * c-common.c (decl_attributes):  For TYPE_DECLs attach the
        attribute to the decl.
        * c-decl.c (pushdecl): Propagate the USED attribute to the 
        type copy.

2000-05-05  Richard Henderson  <rth@cygnus.com>

        * rtlanal.c (reg_overlap_mentioned_p): Treat parallels in the
        same way emit_group_load does.

2000-05-05 Mark Elbrecht <snowball3@bigfoot.com>

        * gcc.c (set_input) [HAVE_DOS_STYLE_FILE_SYSTEM]: Skip drive name.

        * toplev.c (output_file_directive): Use IS_DIR_SEPARATOR.
        (main): Likewise.

2000-05-05 Rodney Brown <RodneyBrown@mynd.com>

        * pa.h (FUNCTION_ARG_ADVANCE): Warning removal.

Fri May  5 10:29:21 2000  Marc Espie <espie@cvs.openbsd.org>

        * config/openbsd.h (LINK_SPEC): pass correct flags to ld 
        to support -shared, on platforms with dynamic libraries.

Fri May  5 10:27:06 2000  Philippe De Muyter  <phdm@macqel.be>

        * system.h (S_ISBLK): Provide fallback definition.

2000-05-05  Geoff Berry  <geoffb@bops.com>

        * extend.texi (Extended Asm): Document inability to give asm
        statements access to condition codes.

2000-05-05  Marek Michalkiewicz  <marekm@linux.org.pl>

        * varasm.c (asm_emit_uninitialised): Use 0, not NULL
        as arg 2 of UNIQUE_SECTION.

Fri May  5 10:11:41 2000  Jeffrey A Law  (law@cygnus.com)

        * predict.c: Remove May 4 change.
        * bb-reorder.c (make_reorder_chain): Do not perform block movement
        if we have predicted the branch at 50-50 probability.

2000-05-05  Richard Henderson  <rth@cygnus.com>

        * flow.c (init_propagate_block_info): Fix merge error
        in HAVE_conditional_execution code.

Fri May  5 07:43:50 2000  Denis Chertykov  <denisc@overta.ru>

        * config/avr/avr.c (out_shift_with_cnt): Genetare a more optimal
        shift cycle for unknown shift count. Also generates dec + brpl.
        (ashlqi3_out): Don't generate dec + brpl which now generates by
        `out_shift_with_cnt'.
        (ashlhi3_out): Likewise.
        (ashlsi3_out): Likewise.
        (ashrqi3_out): Likewise.
        (ashrhi3_out): Likewise.
        (ashrsi3_out): Likewise.
        (lshrqi3_out): Likewise.
        (lshrhi3_out): Likewise.
        (lshrsi3_out): Likewise.

2000-05-04 Mark Elbrecht <snowball3@bigfoot.com>

        * gcc.c (free_split_directories): Correct typo in explanation
        of make_relative_prefix.

2000-05-04  Geoff Keating  <geoffk@cygnus.com>

        * config/rs6000/rs6000.h (PREDICATE_CODES): Add floating-point
        comparison codes to branch_comparison_operator.

2000-05-04  Richard Henderson  <rth@cygnus.com>

        * ifcvt.c (noce_process_if_block): Always reset X in the A == B case.

2000-05-04  Richard Henderson  <rth@cygnus.com>

        * Makefile.in (FPBIT_FUNCS): Remove _df_to_usi.
        (DPBIT_FUNCS): Remove _sf_to_usi.
        (stmp-multilib): Pass LIB1ASMSRC to libgcc.mk.

        * ifcvt.c (noce_process_if_block): Fail if A or B modified
        between condition and jump.

        * libgcc2.c (near eh_context_specific): Comment #endif string.
        * longlong.h: Don't use strings with embedded newlines.

2000-05-04  Geoff Keating  <geoffk@cygnus.com>

        * config/rs6000/rs6000-protos.h: Add output_cbranch.
        * config/rs6000/rs6000.c (ccr_bit_negated_p): Delete.
        (print_operand): Delete %t and %T codes.
        (output_cbranch): New function.  Support branch prediction.
        * config/rs6000/rs6000.md: Use output_cbranch for
        conditional branches and returns.

2000-05-04  Jason Merrill  <jason@casey.cygnus.com>

        * simplify-rtx.c (simplify_ternary_operation): Cast to unsigned.
        * stor-layout.c (place_field): Likewise.
        * integrate.h (struct inline_remap): Make regno_pointer_align unsigned.
        * expr.c (store_expr): Make align unsigned.
        * explow.c (plus_constant_wide): Make low words unsigned.
        * expmed.c (choose_multiplier): Likewise.
        * fold-const.c (fold):  Likewise.
        * tree.h (build_int_2): Likewise.
        * tree.c (build_int_2_wide, tree_int_cst_msb): Likewise.
        * emit-rtl.c (gen_reg_rtx): Add cast to unsigned char*.
        (init_emit): Change cast to unsigned char*.
        * varasm.c (compare_constant_1): Add cast to char*.
        * gcse.c (delete_null_pointer_checks): Change cast to unsigned int*.
        * reload1.c (reload): Likewise.

        * rtl.h (MEM_SET_IN_STRUCT_P): Use do { } while (0).

Thu May  4 14:37:23 2000  Jeffrey A Law  (law@cygnus.com)

        * predict.c (estimate_probability): If no prediction was found, then
        predict the successor that is the next physical block (if such a
        successor exists).

2000-05-04  Richard Henderson  <rth@cygnus.com>

        * config/alpha/t-alpha (LIB2FUNCS_EXTRA): Use qrrnd.asm in place.

2000-05-04  Kaveh R. Ghazi  <ghazi@caip.rutgers.edu>

        * system.h: Don't wrap <sys/types.h> with HAVE_SYS_TYPES_H.

2000-05-04  Mumit Khan  <khan@xraylith.wisc.edu>

        * i386/cygwin.h (CPP_PREDEFINES): Don't define __STDC__. Move 
        attribute macros from here ...
        (CPP_SPEC): to here.
        * i386/mingw32.h (CPP_PREDEFINES): Likewise.
        (CPP_SPEC): Likewise.
        * i386/crtdll.h (CPP_PREDEFINES): Delete attribute macros. 

        * Makefile.in ($(HOST_PREFIX_1)gensupport.o): Add build rule.
        (libgcc.a): Pass LIB1ASMSRC to libgcc.mk.

2000-05-04  Kaveh R. Ghazi  <ghazi@caip.rutgers.edu>

        * bb-reorder.c (get_next_bb_note, get_prev_bb_note): Prototype.
        
        * diagnostic (vbuild_message_string, build_message_string,
        build_location_prefix, output_get_prefix, init_output_buffer,
        output_notice, vline_wrapper_message_with_location,
        v_message_with_decl, default_print_error_function): De-constify.
        (set_real_maximum_length): Prototype.

        * diagnostic.h (struct output_buffer, init_output_buffer,
        output_get_prefix, output_set_prefix): De-constify.

        * function.c (init_function_start): Constify.

        * gensupport.c (remove_constraints, process_rtx): Prototype.

        * gthr-posix.h: Indent uses of #pragma.

        * objc/objc-act.c (ggc_mark_imp_list, ggc_mark_hash_table):
        Prototype.

        * predict.c (find_expected_value): Delete prototype.
        (expected_value_to_br_prob): Initialize variable `ev_reg'.

        * sbitmap.h (debug_sbitmap): Prototype.

        * ssa.c (compute_coalesced_reg_partition): Prototype.

        * stor-layout.c (debug_rli): Prototype.

        * tree.h (round_down): Prototype.
        (init_function_start): Constify.

2000-05-04  Zack Weinberg  <zack@wolery.cumb.org>

        * cpphash.h: #define __extension__ away if GCC_VERSION < 2095
        (overly conservative).  Change extern inline wrappers to
        static inline, define them always, use PARAMS properly.
        * cpplex.c (_cpp_get_directive_token): Don't issue pedantic
        whitespace warnings for \f and \v at the beginning of a line.

Thu May  4 10:03:50 2000  Jeffrey A Law  (law@cygnus.com)

        * haifa-sched.c (schedule_insns): Free the flow edge list when it
        is no longer needed

2000-05-04  Bruce Korb  <bkorb@gnu.org>

        * fixincl/inclhack.def: added broken_cabs -
        Remove `extern double cabs' declarations from math.h
        * fixincl/inclhack.sh: regen
        * fixincl/fixincl.x: regen
        * fixincl/fixincl.c: Remove BOGOSITY code
        * fixincl/mkfixinc.sh: Remove code for installing "shell" version

Thu May  4 09:45:12 2000  Richard Kenner  <kenner@vlsi1.ultra.nyu.edu>

        * rtl.h (MEM_COPY_ATTRIBUTES): Also copy RTX_UNCHANGING_P and
        MEM_ALIAS_SET.
        * alias.c (canon_rtx): Don't copy RTX_UNCHANGING_P or MEM_ALIAS_SET
        when calling MEM_COPY_ATTRIBUTES.
        * emit-rtl.c (operand_subword, change_address): Likewise.
        * explow.c (stabilize): Likewise.
        * expr.c (protect_from_queue, emit_move_insn_1): Likewise.
        * integrate.c (copy_rtx_and_substitute): Likewise.
        * combine.c (combine_simplify_rtx): Don't copy RTX_UNCHANGING_P
        when calling MEM_COPY_ATTRIBUTES.
        (make_extraction, simplify_shift_const, gen_lowpart_for_combine):
        Likewise.
        * cse.c (gen_lowpart_if_possible): Likewise.
        * function.c (fixup_var_refs_1, purge_addressof_1): Likewise.
        * optabs.c (gen_move_insn): Likewise.
        * recog.c (validate_replace_rtx_1): Likewise.
        * simplify-rtx.c (add_mem_for_addr): Likewise.
        * stmt.c (expand_anon_union_decl): Likewise.
        * config/arm/arm.md: Likewise.
        * config/h8300/h7300.c (fix_bit_operand): Likewise.
        * config/m88k/m88k.c (legitimize_address, block_move_loop): Likewise.
        (block_move_no_loop, block_move_sequence): Likewise.
        * config/rs6000/rs6000.c (expand_block_move_mem): Likewise.
        * config/alpha/alpha.c (get_aligned_mem): Likewise.
        Clear MEM_ALIAS_SET.
        * final.c (alter_subreg): Don't copy MEM_ALIAS_SET when calling
        MEM_COPY_ATTRIBUTES.

2000-05-03  Robert Lipe <robertlipe@usa.net>
        
        * configure.in (i[34567]86-*-isc*) [tmake_file]: Add t-i386bare
        to suppress libgcc1.
        (i[34567]86-*-sco3.2v5*) Likewise.
        (i[34567]86-*-sco3.2v4*) Likewise.
        (i[34567]86-*-sco) Likewise.
        (i[34567]86-*-solaris2) Likewise.
        (i[34567]86-*-sysv5*) Likewise.
        (i[34567]86-*-sysv4*) Likewise.
        (i[34567]86-*-udk*) Likewise.
        (i[34567]86-*-sysv*) Likewise.

2000-05-03  Zack Weinberg  <zack@wolery.cumb.org>

        * cpphash.h (U): New define, to correct type of string constants.
        (ustrcmp, ustrncmp, ustrlen, uxstrdup, ustrchr): New wrapper
        routines, to do casts when passing unsigned strings to libc.
        * cppexp.c, cppfiles.c, cpphash.c, cppinit.c, cpplib.c: Use them.

        * cppfiles.c (_cpp_execute_include): Make filename an U_CHAR *.
        * cpphash.c (_cpp_quote_string): Make string an U_CHAR *.
        * cppinit.c (dump_special_to_buffer): Make macro name an U_CHAR *.
        * cpplex.c (parse_ifdef, parse_include, validate_else): Make
        second argument an U_CHAR *.

        * cppinit.c (builtin_array): Make name and value U_CHAR *, add
        length field, clean up initializer.
        (ISTABLE): Add __extension__ to designated-
        initializers version.
        * cpplex.c (CHARTAB): Likewise.

        * mbchar.c: Add dummy external declaration to the !MULTIBYTE_CHARS
        case so the file won't be empty.

Wed May  3 21:01:46 2000  Jason Eckhardt  <jle@cygnus.com>

        * bb-reorder.c (struct reorder_block_def): Member succ removed.
        (REORDER_BLOCK_SUCC): Removed.
        (enum reorder_skip_type): Removed.
        (skip_insns_between_block): Renamed to skip_insns_after_block.
        Removed second argument. Removed dead code and cleaned up.
        (make_reorder_chain): Removed use of REORDER_BLOCK_SUCC.
        (reorder_basic_blocks): Remove use of REORDER_SKIP_AFTER. Removed
        second parameter to skip_insns_after_block.

Wed May  3 13:29:54 2000  Richard Kenner  <kenner@vlsi1.ultra.nyu.edu>

        * tree.c (staticp, case LABEL_DECL): New case.

2000-05-03  Richard Henderson  <rth@cygnus.com>

        * Makefile.in (start.encap): Do not depend on LIBGCC1.

        * mklibgcc1.in: Fix typo last change.

2000-05-03  Jason Merrill  <jason@casey.cygnus.com>

        * Makefile.in (WARN_CFLAGS): Add -pedantic -Wno-long-long.
        (LOOSE_CFLAGS): New: CFLAGS without -pedantic and -Wtraditional.
        (GCC_CFLAGS): Use it.
        (LANG_FLAGS_TO_PASS): New: SUBDIR_FLAGS_TO_PASS with LOOSE_CFLAGS.
        * cp/Make-lang.in, java/Make-lang.in, f/Make-lang.in, ch/Make-lang.in,
        objc/Make-lang.in: Use it.

2000-05-03  Jason R Thorpe  <thorpej@zembu.com>

        * config/i386/i386.md (lshrqi2_cmpno): Use q not r in constraint.

2000-05-03  Richard Henderson  <rth@cygnus.com>

        * mklibgcc.in: Restrict OLDCC=GCC test to native.  Equate
        LIBGCC1 empty with libgcc1.null.

Wed May  3 12:55:46 2000  Jim Wilson  <wilson@cygnus.com>

        * fold-const.c (extract_muldiv, case MAX_EXPR): Don't allow signedness
        change.

2000-05-03  Greg McGary  <gkm@gnu.org>

        * tree.h (tree_common): Add bounded_flag member.  Remove
        inaccurate comment about number of remaining bits.
        (BOUNDED_INDIRECT_TYPE_P, BOUNDED_POINTER_TYPE_P,
        BOUNDED_REFERENCE_TYPE_P, MAYBE_BOUNDED_INDIRECT_TYPE_P,
        MAYBE_BOUNDED_POINTER_TYPE_P, MAYBE_BOUNDED_REFERENCE_TYPE_P,
        TREE_BOUNDED, TYPE_MAIN_VARIANTS_PHYSICALLY_EQUAL_P,
        TYPE_MAIN_PHYSICAL_VARIANT, TYPE_BOUNDED): New macros.
        (TYPE_QUAL_BOUNDED): New constant.
        (TYPE_QUALS): Handle bounded qualifier.
        (TREE_EXPR_QUALS, TREE_FUNC_QUALS): New macros.
        (TYPE_BOUNDED_VALUE, TYPE_BOUNDED_BASE, TYPE_BOUNDED_EXTENT,
        TYPE_BOUNDED_SUBTYPE, TYPE_UNBOUNDED_VARIANT, TYPE_POINTER_DEPTH,
        TYPE_AMBIENT_BOUNDEDNESS): New macros.
        (MAX_POINTER_DEPTH, VA_LIST_POINTER_DEPTH): New constants.
        (tree_type): Add pointer_depth member.  Remove
        inaccurate comment about number of remaining bits.
        (DECL_POINTER_DEPTH): Add macro.
        (tree_decl): Add pointer_depth member.

Wed May  3 22:52:53 2000  Denis Chertykov  <denisc@overta.ru>

        * config/avr/avr-protos.h (test_hard_reg_class): Declared.
        * config/avr/avr.c (ashrhi3_out): optimized shift by 15.
        (lshrhi3_out): Likewise.
        (ashrsi3_out): bugfix in shift by 8.
        (test_hard_reg_class): New function.
        * config/avr/avr.md: Bugfix inside conditions in peepholes.
        (ashlhi3): removed define_expand of this pattern.
        (*ashlhi3_insn): renamed to ashlhi3.
        (ashlsi3): removed define_expand of this pattern.
        (*ashlsi3_insn): renamed to ashlsi3.
        (ashrqi3): removed define_expand of this pattern.
        (*ashrqi3_insn): renamed to ashrqi3.
        (ashrhi3): removed define_expand of this pattern.
        (*ashrhi3_insn): renamed to ashrhi3.
        (ashrsi3): removed define_expand of this pattern.
        (*ashrsi3_insn): renamed to ashrsi3.
        (lshrhi3): removed define_expand of this pattern.
        (*lshrhi3_insn): renamed to lshrhi3.
        (lshrsi3): removed define_expand of this pattern.
        (*lshrsi3_insn): renamed to lshrsi3.

2000-05-03  Rodney Brown  <RodneyBrown@pmsc.com>

        * config/mcore/mcore.c: Replacing inclusion of "stdio,h" with
        inclusion of "system.h".

Wed May  3 11:43:53 2000  Jim Wilson  <wilson@cygnus.com>

        * config/ia64/ia64.c (ia64_encode_section_info): Add check for
        TREE_ASM_WRITTEN.

2000-05-03  David Mosberger  <davidm@hpl.hp.com>

        * config/ia64/ia64.c (ia64_override_options): Force -mconstant-gp
        if -mauto-pic is on.
        (ia64_epilogue_uses): Mark "gp" (r1) as used by the epilogue if
        -mconstant-gp is in effect and function-descriptors are being used
        to make indirect calls.
        * config/ia64/ia64.h (MASK_CONST_GP): New macro.
        (MASK_AUTO_PIC): Ditto.
        (TARGET_CONST_GP): Ditto.
        (TARGET_AUTO_PIC): Ditto.
        (TARGET_SWITCHES): Add -mconstant-gp and -mauto-pic options.
        (ASM_OUTPUT_DOUBLE_INT): Don't generate @fptr() if -mauto-pic or
        -mno-pic is in effect.
        (ASM_OUTPUT_XDATA_DOUBLE_INT): Ditto.
        * config/ia64/ia64.md (movdi): Use gen_load_gprel64() if
        -mauto-pic is in effect.
        (gprel64_offset): New pattern.
        (load_gprel64): Ditto.
        (call): Handle -mauto-pic like -mno-pic (don't use fptr).  If
        -mconstant-gp is in effect, no need to preserve gp around direct
        calls.
        (call_value): Ditto.
        * config/ia64/linux.h (PROFILE_BEFORE_PROLOGUE): Define.
        (FUNCTION_PROFILER): Define.
        * config/ia64/sysv4.h (ASM_OUTPUT_CONSTRUCTOR): Don't generate
        @fptr() directive when -mno-pic or -mauto-pic is in effect.
        (ASM_OUTPUT_DESTRUCTOR): Ditto.

2000-05-03  Richard Henderson  <rth@cygnus.com>

        * Makefile.in (STAGESTUFF): Add libgcc libgcc.mk.
        (libgcc1.null, libgcc1.cross, libgcc1.a): Remove targets.
        (libgcc1-asm.a, libgcc1.S, libgcc2.a): Remove targets.
        (mklibgcc, libgcc.mk): New targets.
        (libgcc.a): Use libgcc.mk.
        (stmp-multilib): Likewise.
        (stmp-multilib-sub): Remove.
        (mostlyclean): Don't delete libgcc2 temp files.
        * configure.in (AC_PROG_CC_C_O): Add.
        (NO_MINUS_C_MINUS_O): Substitute it.
        (all_outputs): Add mklibgcc.
        * mklibgcc.in: New file.

2000-05-03  Jason Merrill  <jason@casey.cygnus.com>

        * cppexp.c (op_t): Make an int.

        * rtlanal.c (dead_or_set_regno_p): Remove unused variable.

        * varasm.c (initializer_constant_valid_p): Fix parenthesis.

        * gensupport.c (process_rtx): Fix macros used.

2000-05-03  Richard Henderson  <rth@cygnus.com>

        * flow.c (propagate_one_insn): Also don't PROP_REG_INFO for
        call-clobbered registers of a call.

Wed May  3 12:40:53 2000  Clinton Popetz  <cpopetz@cygnus.com>

        * gensupport.c: New file.
        * gensupport.h: New file.
        * Makefile.in (HOST_RTL): Depend on gensupport.
        (gensupport.o) New rule.
        * genattr.c: Use gensupport for reading .md files.
        * genattrtab.c: Ditto. 
        * gencodes.c: Ditto. 
        * genconfig.c: Ditto. 
        * genemit.c: Ditto. 
        * genextract.c: Ditto. 
        * genflags.c: Ditto. 
        * genopinit.c: Ditto. 
        * genoutput.c: Ditto. 
        * genpeep.c: Ditto. 
        * genrecog.c: Ditto.
        * rtl.def (define_insn_and_split): New DEF_RTL_EXPR.
        * md.texi (Insn Splitting): Document define_insn_and_split.

Tue May  2 00:20:30 2000  Jason Eckhardt  <jle@cygnus.com>

        * flow.c (verify_flow_info): Added two more sanity checks. The
        first checks that the blocks are numbered consecutively. The second
        checks that n_basic_blocks is actually equal to the number of
        basic blocks in the insn chain.

2000-05-03  Zack Weinberg  <zack@wolery.cumb.org>

        * cpplib.h: Add accessor macros for token lists.
        * cpplib.c, cpphash.c, cpplex.c: Use them.

Wed May  3 09:29:17 2000  Richard Kenner  <kenner@vlsi1.ultra.nyu.edu>

        * expr.c (expand_expr, case COMPONENT_REF): Don't check for checking
        memory usage if not in a function.
        * varasm.c (initializer_constant_valid_p, case ADDR_EXPR): Only
        return address if static.

Wed May  3 13:14:49 MET DST 2000  Jan Hubicka  <jh@suse.cz>

        * ifcvt.c (noce_try_cmove_arith):  Use may_trap_p to thest
        whether address may trap.

Tue May  2 23:38:37 2000  Jason Eckhardt  <jle@cygnus.com>

        * bb-reorder (chain_reorder_blocks): Changed code to test for
        EDGE_FALLTHRU rather than making erroneous assumption that the
        first outgoing edge is the fall-through edge.

Tue May  2 18:20:31 2000  Donald Lindsay  <dlindsay@hound.cygnus.com>

        * config/mips/mips.c (mips_build_va_list,mips_va_start,mips_va_arg): new 
        ABI for varargs, across all MIPS. This is incompatible because the
        va_list (__builtin_va_list) structure is different, so a compilation
        unit passing a va_list and a compilation unit being passed one, should
        both be compiled with the same ABI. (The old structure had two 
        pointers, now it has three.)

Tue May  2 19:18:43 2000  Jason Eckhardt  <jle@cygnus.com>

        * bb-reorder.c (struct reorder_block_def): Remove members end,
        block_begin, and block_end.
        (REORDER_BLOCK_OLD_END): Delete.
        (REORDER_BLOCK_BEGIN): Delete.
        (REORDER_BLOCK_END): Delete.
        (chain_reorder_blocks): Remove dead code.

Tue May  2 17:06:53 2000  Jason Eckhardt  <jle@cygnus.com>

        * bb-reorder.c (remove_scope_notes): Check for both types of scope
        notes as the end of a basic block before deleting.

2000-05-02  Mumit Khan  <khan@xraylith.wisc.edu>

        * final.c (final_start_function): Fix spelling of "necessary".

2000-05-02  Jason Merrill  <jason@casey.cygnus.com>

        * toplev.c (debug_ignore_block): Return int.
        * dwarf2out.c (dwarf2out_ignore_block): Likewise.
        * toplev.h, dwarf2out.h: Adjust.
        * emit-rtl.c (remove_unnecessary_notes): Test return value.

        * emit-rtl.c (remove_unnecessary_notes): Fix spelling of "necessary".
        * toplev.c, final.c, rtl.h: Adjust.

2000-05-02  Zack Weinberg  <zack@wolery.cumb.org>

        * aclocal.m4 (gcc_AC_CHECK_PROG_VER): New macro.
        * configure.in: Look for makeinfo in the unified tree, then
        for a system makeinfo which is sufficiently new.
        * Makefile.in: If configure says makeinfo is too old, don't
        build or install Info documentation.

2000-05-02  Zack Weinberg  <zack@wolery.cumb.org>

        * cpphash.c (collect_params): Fix off-by-one error.
        (dump_hash_helper): Dump all four macro nodetypes.

2000-05-02  Jakub Jelinek  <jakub@redhat.com>

        * cpphash.c (trad_stringify): Adjust p after stringification as
        well.

2000-05-02  Zack Weinberg  <zack@wolery.cumb.org>

        * cpplib.h (CPP_POP, parse_cleanup_t): Delete.
        (cpp_buffer): Remove cleanup, seen_eof, manual_pop members.

        * cppfiles.c (file_cleanup): Delete.
        * cpphash.c (macro_cleanup): Delete.
        (collect_objlike_expansion, collect_funlike_expansion,
        macarg, scan_arguments): Remove CPP_POP case.

        * cpplex.c (null_cleanup): Delete.
        (cpp_pop_buffer): Do the work that was done in the cleanups
        here.  Call _cpp_unwind_if_stack from here.
        (_cpp_expand_to_buffer, cpp_scan_buffer_nooutput,
        cpp_scan_buffer): Run until we see CPP_EOF and the top of
        stack is the buffer _below_ the one we stacked.
        (cpp_get_token): Always pop an exhausted buffer.  Return
        CPP_EOF unless it's a macro buffer.  Don't call _cpp_handle_eof.
        * cpplib.c (skip_if_group): Don't call cpp_get_token to
        increment the line number.
        (_cpp_handle_eof): Rename to _cpp_unwind_if_stack.

        * fix-header.c (read_scan_file) [parsing getchar()]: Run until
        we see CPP_EOF and the top of stack is the buffer _below_ the
        one we stacked.
        * scan-decls.c: Likewise.

2000-05-02  Andrew Haley  <aph@cygnus.com>

        * config/ia64/ia64.c (ia64_encode_section_info): Handle the case
        where this function is called for the second time on a decl that
        has had its section info changed in such a way as to move it out
        of small data/bss.  
        * config/ia64/ia64.h (REDO_SECTION_INFO_P): New definition.

2000-05-01  Richard Henderson  <rth@cygnus.com>

        * ifcvt.c (dead_or_predicable): Set merge_bb->end to the insn before
        the sequence we're moving, not to merge_bb->head.

2000-05-01  Richard Henderson  <rth@cygnus.com>

        * configure.in (alpha*-*-linux-gnulibc1*) [tmake_file]: Remove
        reference to alpha/t-linux.
        (alpha*-*-linux-gnu*): Likewise.
        * configure: Rebuild.

        * calls.c (expand_call): Don't emit reg notes for a sibcall.

        * flow.c (calculate_global_regs_live): Skip for_each_successor_phi
        if not in SSA form.

        * ifcvt.c (if_convert): Only verify_flow_info if ENABLE_CHECKING.

2000-05-01  Jason Merrill  <jason@casey.cygnus.com>

        * integrate.c (copy_decl_for_inlining): Copy TREE_READONLY and
        TREE_THIS_VOLATILE.

2000-05-01  Richard Henderson  <rth@cygnus.com>

        * ifcvt.c (noce_emit_cmove): Conditionally compile call to
        emit_conditional_move.

2000-05-01  Jakub Jelinek  <jakub@redhat.com>

        * config/ia64/linux.h (LINK_SPEC): Use /lib/ld-linux-ia64.so.1
        as the dynamic linker.

2000-05-01  Zack Weinberg  <zack@wolery.cumb.org>

        * cppfiles.c (open_include_file): Open file in blocking mode.
        (read_include_file): Don't fcntl(fd, F_SETFL, 0) anymore.
        Only exclude block devices and directories.

        * cpphash.c (_cpp_make_hashnode): Rename make_HASHNODE, now
        static.  Allocate the hashnode and its string in the same
        block of memory.
        (del_HASHNODE): Don't free h->name.
        (_cpp_lookup): If there is no entry for this string, create
        one, of type T_VOID.
        (_cpp_lookup_slot): Delete.
        * cpphash.h: Update prototypes.

        * cpplex.c (maybe_macroexpand): Check for hp->type == T_VOID,
        not hp == NULL.
        * cpplib.c (do_define, do_undef, do_pragma_poison, do_assert,
        do_unassert, cpp_defined): Use _cpp_lookup.  Don't create a
        node here, just fill in the value field properly.  "Delete"
        entries by setting the value field to T_VOID.  Check for
        hp->type == T_VOID, not hp == NULL.

        * Makefile.in (cpplib.o): Don't depend on $(HASHTAB_H).
        * cpperror.c, cppexp.c, cpplex.c, cpplib.c:  Don't include
        hashtab.h.

2000-05-01  Alexandre Oliva  <aoliva@cygnus.com>

        * config/mn10300/mn10300.c (print_operand_address): Do not add
        zero to SP.

        * config/mn10300/mn10300.c (expand_epilogue): If SP is to be
        adjusted by less than 256 bytes, use ret regardless of having any
        callee-saved register to restore.

2000-05-01 Laurynas Biveinis <lauras@softhome.net>

        * tm.texi (TARGET_HAS_F_SETFLKW): Fix typo.

2000-05-01 Mark Elbrecht <snowball3@bigfoot.com>

        * config/i386/djgpp.h (INT_ASM_OP): Define.
        (CPP_PREDEFINES): Rename MSDOS to __MSDOS__.
        (ASM_WEAKEN_LABEL): Define.
        (MASK_BNU210): Define.
        (SUBTARGET_SWITCHES): Define.
        (SUPPORTS_WEAK, SUPPORTS_ONE_ONLY): Define.
        (MAKE_DECL_ONE_ONLY): Define.
        (UNIQUE_SECTION_P, UNIQUE_SECTION): Define.

2000-05-01  Mumit Khan  <khan@xraylith.wisc.edu>

        * i386/cygwin.h (INT_ASM_OP): Define.

Mon May  1 18:20:06 2000  Denis Chertykov  <denisc@overta.ru>

        * config/avr/avr.c (address_cost): renamed to avr_address_cost.
        * config/avr/avr.h (ADDRESS_COST): use avr_address_cost.

Mon May  1 17:50:44 2000  Denis Chertykov  <denisc@overta.ru>

        * config/avr/avr.c (asm_file_start): output 0 as r0 and 1 as r1 in
        __tmp_reg__ and __zero_reg__ initialization.

2000-04-30  Richard Henderson  <rth@cygnus.com>

        * flow.c (propagate_one_insn): Mark sets even when the insn is dead.

        * ifcvt.c (noce_process_if_block): Fail the conversion if X is
        referenced bewteen the condition and the jump.  Don't delete
        anything but the jump.

Sun Apr 30 22:48:24 2000  Jason Eckhardt  <jle@cygnus.com>

        * bb-reorder.c (scope_def): New struct.
        (scope_forest_info): New struct.
        (struct reorder_block_def): New member "scope".
        (REORDER_BLOCK_SCOPE): New macro.
        (relate_bbs_with_scopes): New function and prototype.
        (make_new_scope): Likewise.
        (build_scope_forest): Likewise.
        (remove_scope_notes): Likewise.
        (insert_intra_1): Likewise.
        (insert_intra_bb_scope_notes): Likewise.
        (insert_inter_bb_scope_notes): Likewise.
        (rebuild_scope_notes): Likewise.
        (free_scope_forest_1): Likewise.
        (free_scope_forest): Likewise.
        (dump_scope_forest): Likewise.
        (dump_scope_forest_1): Likewise.
        (chain_reorder_blocks): Set REORDER_BLOCK_SCOPE for new block.
        Update REORDER_BLOCK_EFF_HEAD and REORDER_BLOCK_EFF_END for new
        block.
        (reorder_basic_blocks): Added calls to build_scope_scope_forest
        and remove_scope_notes before reordering is done. Added calls to
        rebuild_scope_notes, free_scope_forest, and reorder_blocks after
        after reordering is done.

2000-40-30  Bruce Korb  <bkorb@gnu.org>

        * fixinc/inclhack.def:  Added definitions needed by OSR5,
        removed two stale entries (defined away with OLD_CPP).
        * fixinc/inclhack.sh: regen
        * fixinc/fixincl.x: regen

2000-04-30  Richard Henderson  <rth@cygnus.com>

        * ifcvt.c (dead_or_predicable): Manually squeeze non-movable notes
        from the last insn in the sequence.

2000-04-30  Zack Weinberg  <zack@wolery.cumb.org>

        * cpplex.c (cpp_idcmp): New function.
        * cpplib.h: Prototype it.
        * scan_decls.c (scan_decls): Use it to inspect token names.
        * fix-header.c (read_scan_file): Likewise.  Set system_header_p on
        the file being run through the preprocessor.
        (check_macro_names): Provide length of token to cpp_defined.

        * Makefile.in: Remove stale warning message.

        * cppfiles.c (redundant_include_p): Provide length of token to
        cpp_defined.
        * cpphash.c (_cpp_make_hashnode, _cpp_lookup_slot): Hash
        values are unsigned int.
        (_cpp_lookup, _cpp_lookup_slot): Do not calculate the length.
        (_cpp_lookup_slot): Do not calculate the hash, either.
        * cpphash.h: Update prototypes.
        * cpplib.c (do_define, do_undef, do_pragma_poison, do_assert):
        Hashes are unsigned int.  Calculate hash here, pass by value
        to _cpp_lookup_slot.

2000-04-30  Bernd Schmidt  <bernds@cygnus.co.uk>

        * simplify-rtx.c (check_value_useless): Delete function.
        (discard_useless_locs): Don't call it; manage N_USELES_VALUES counter
        by hand.
        (cselib_invalidate_regno): Likewise.
        (cselib_invalidate_mem_1): Likewise.
        (references_value_p): Recognize useless values by the fact that they
        have no locations.
        (discard_useless_values): Likewise.
        (cselib_record_set): This may turn a useless value
        into a useful one.

2000-04-30  Richard Henderson  <rth@cygnus.com>

        * config/d30v: New port.

        * configure.in (d30v-*): Set fp format.
        * configure: Rebuild.

2000-04-30  Richard Henderson  <rth@cygnus.com>

        * ifcvt.c: New file.
        * Makefile.in (OBJS): Add it.
        (ifcvt.o): New target.
        * jump.c (jump_optimize_1): Remove all code related to if-conversion,
        and conditional arithmetic.
        (find_insert_position): Remove.
        * timevar.def (TV_IFCVT, TV_IFCVT2): New.
        * toplev.c (DFI_ce, DFI_ce2): New.
        (dump_file): Add ce and ce2 dumps.
        (rest_of_compilation): Run if_convert a couple o times.  Set
        cse_not_expected after cse2.  Don't set no_new_pseudos until
        after sched1 or recompute_reg_usage.

2000-04-30  Richard Henderson  <rth@cygnus.com>

        * config/alpha/t-crtbe (crtbegin.o): Add "-I.".
        (crtend.o, crtbeginS.o, crtendS.o): Likewise.

2000-04-30  Richard Henderson  <rth@cygnus.com>

        * flow.c (struct reg_cond_life_info): New.
        (struct propagate_block_info): Add reg_cond_dead and reg_cond_reg.
        (init_propagate_block_info): Initialize them.
        (free_propagate_block_info): Destruct them.
        (mark_set_1): Consider conditional life before killing a register.
        (mark_regno_cond_dead): New.
        (free_reg_cond_life_info): New.
        (flush_reg_cond_reg_1, flush_reg_cond_reg): New.
        (ior_reg_cond, not_reg_cond, nand_reg_cond): New.
        (mark_used_reg): Record conditional life.

        * haifa-sched.c (schedule_insns): Disable death counting
        sanity check for HAVE_conditional_execution.

2000-04-30  Richard Henderson  <rth@cygnus.com>

        * Makefile.in (TIMEVAR_H): New.
        (ggc-simple.o, ggc-page.o, toplev.o, timevar.o): Use it.
        (timevar.h): Remove rule.

2000-04-29  Richard Henderson  <rth@cygnus.com>

        * config/alpha/crtend.asm: Use C comments instead of #.
        * config/alpha/crtbegin.asm: Likewise.  Mark __dso_handle hidden.

        * config/alpha/elf.h (SELECT_SECTION): Treat CONSTRUCTOR like VAR_DECL.

2000-04-29  Zack Weinberg  <zack@wolery.cumb.org>

        * cpphash.h (enum node_type: Take out T_MCONST.
        (union hashval): Move into struct hashnode.
        (struct hashnode): Pack tighter.  Remove file, line, col
        members.
        * cpphash.c: Constify most of the macro-definition structures.
        (struct definition): Replace by struct object_defn
        and struct funct_defn.  Put file, line, column information
        here.  All users updated to match.
        (_cpp_create_definition, _cpp_macroexpand): Remove special
        case for #define WORD OTHERWORD.
        * cpplib.c (do_undef): Remove T_MCONST case.

        * cpphash.h: Move struct reflist, struct definition, and the
        DEFINITION typedef to cpphash.c.  Use 'struct definition *' in
        union hashval.  _cpp_free_definition takes a HASHNODE pointer.
        * cpphash.c (_cpp_free_definition): Free data pointed to by
        MCONST, XCONST, MACRO, and FMACRO nodes properly.
        (_cpp_create_definition, del_HASHNODE): Just call
        _cpp_free_definition to clear out a hashnode.
        * cpplib.c (do_pragma_poison): Likewise.

Sat Apr 29 12:25:17 2000  Alexandre Oliva  <aoliva@cygnus.com>

        * config/mn10300/mn10300.h (FIRST_DATA_REGNUM,
        LAST_DATA_REGNUM, FIRST_ADDRESS_REGNUM, LAST_ADDRESS_REGNUM,
        FIRST_EXTENDED_REGNUM, LAST_EXTENDED_REGNUM): New macros.
        (REGNO_SP_P): Redefine in terms of STACK_POINTER_REGNUM.
        (REGNO_DATA_P, REGNO_ADDRESS_P, REGNO_EXTENDED_P,
        REGNO_AM33_P): Redefine in terms of the new macros.
        (CONDITIONAL_REGISTER_USAGE, REGNO_REG_CLASS): Likewise.
        (FUNCTION_VALUE, LIBCALL_VALUE, FUNCTION_VALUE_REGNO_P,
        STRUCT_VALUE): Likewise.
        (STACK_POINTER_REGNUM, FRAME_POINTER_REGNUM,
        ARG_POINTER_REGNUM, STATIC_CHAIN_REGNUM): Likewise.  Moved.

Sat Apr 29 01:18:45 MET DST 2000  Jan Hubicka  <jh@suse.cz>

        * regmove.c (struct record_stack_memrefs_data): New.
        (record_stack_memrefs): New function.
        (combine_stack_adjustments_for_block): Use it.

Sat Apr 29 01:15:27 MET DST 2000  Jan Hubicka  <jh@suse.cz>

        * calls.c (calls_function_1):  Propertly handle TREE_LIST expressions;
        use special_function_p to detect alloca.

Fri Apr 28 16:30:33 2000  Marc Espie <espie@cvs.openbsd.org>

        * gcc.texi: Fixes for makeinfo 4.0 --html.

2000-04-28  Zack Weinberg  <zack@wolery.cumb.org>

        * pcp.h: Delete file.

2000-04-28  Kazu Hirata  <kazu@hxi.com>

        * h8300.c (function_epilogue): Clean up flags when the last insn
        in a function is a barrier.

2000-04-28  Chris Demetriou  <cgd@sibyte.com>

        * configure.in (sparc-hal-solaris2*): protect [] glob from
        my expansion.
        (mips*-*-ecoff*, mips*-*-elf*, mips*-*-*): use MASK_ defines
        rather than hard-coded constants in target_cpu_default2.
        * configure: Regenerate.

2000-04-28  Jason Merrill  <jason@casey.cygnus.com>

        * tree.c (get_callee_fndecl): Extract the initial value from
        a readonly decl.

2000-04-28  Richard Henderson  <rth@cygnus.com>

        * varasm.c (record_constant_1): Record the CODE_LABEL when
        taking the address of a LABEL_REF.

2000-04-28  Richard Henderson  <rth@cygnus.com>
            Jan Hubicka  <jh@suse.cz>

        * calls.c (combine_pending_stack_adjustment_and_call): Return the
        adjustment; don't do the stack adjust.
        (expand_call): Call compute_argument_block_size right before
        allocating the block; update comment; don't do alignment sanity
        checking for sibling call; use args_size instead of
        unadjusted_args_size before args_size is adjusted.  Use
        combine_pending_stack_adjustment_and_call to compute stack adjust
        for must_preallocate case.

        * expr.c (push_block): Remove shadow `temp' in inner scope.

2000-04-28  Jason Merrill  <jason@casey.cygnus.com>

        * toplev.c (rest_of_compilation): Call
        note_deferral_of_defined_inline_function even if the function
        can't be inlined.

2000-04-28  Scott Bambrough  <scottb@netwinder.org>

        * cpplex.c (_cpp_scan_line): Fix buffer overwrite.

2000-04-28  Richard Henderson  <rth@cygnus.com>

        * toplev.c (rest_of_type_compilation): Fix sdb TIMEVAR typo.

2000-04-28  Kaveh R. Ghazi  <ghazi@caip.rutgers.edu>

        * timevar.c (init_timevar): DeANSIfy function definition.

2000-04-27  Alex Samuel  <samuel@codesourcery.com>

        * Makefile.in (timevar.o): Depend on flags.h.
        * timevar.c (unused_stack_instances): New variable.
        (timevar_push): Take a timevar_stack_def from
        unused_stack_instances if available.
        (timevar_pop): Push the popped timevar_stack_def onto
        unused_stack_instances.
        (TIMEVAR_ENABLE): New macro.
        (timevar_def): Make standalone a 1-bit field.  Add field used.
        (get_time): Rename parameter to now.  Return after clearing it if
        not TIMEVAR_ENABLE.
        (init_timevar): Do nothing if not TIMEVAR_ENABLE.
        (timevar_pop): Likewise.
        (timevar_stop): Likewise.
        (timevar_push): Likewise.  Mark the timing variable as used.
        (timevar_start): Likewise.
        (timevar_print): Do nothing if not TIMEVAR_ENABLE.  Don't print
        timevars that were never used.

2000-04-27  Mark Mitchell  <mark@codesourcery.com>

        * c-common.c (c_apply_type_quals_to_decl): REFERENCE_TYPES are
        always TREE_READONLY.

2000-04-27  Ulrich Drepper  <drepper@cygnus.com>

        * i386.h (FUNCTION_BLOCK_PROFILER_EXIT): Generate mem reference
        for call instruction with mode QImode.

2000-04-27  Alex Samuel  <samuel@codesourcery.com>

        * Makefile.in (OBJS): Add timevar.o.
        (toplev.o): Depend on timevar.h.
        (ggc-simple.o): Likewise.
        (ggc-page.o): Likewise.
        (timevar.o): New rule.
        (timevar.h): New rule.

        * timevar.h: New file.
        * timevar.c: Likewise.
        * timevar.def: Likewise.

        * toplev.h (gc_time, parse_time, varconst_time): Remove.
        * toplev.c: Use timevar_push and timevar_pop instead of TIMEVAR
        throughout.
        (TIMEVAR): Remove macro.
        (gc_time, parse_time, varconst_time, integration_time, jump_time,
        cse_time, gcse_time, loop_time, cse2_time, branch_prob_time,
        flow_time, combine_time, regmove_time, sched_time,
        local_alloc_time, global_alloc_time, flow2_time, peephole2_time,
        sched2_time, dbr_sched_time, reorder_blocks_time,
        rename_registers_time, shorten_branch_time, stack_reg_time,
        to_ssa_time, from_ssa_time, final_time, symout_time, dump_time,
        all_time): Remove.
        (compile_file): Don't initialize time variables.  Call
        init_timevar and start TV_TOTAL timer.  Call timevar_print instead
        of many calls to print_time.
        (rest_of_compilation): Add timing for reload_cse_regs.
        (get_run_time): Removed to timevar.c.
        (print_time): Likewise.
        (get_run_time): Implement using TV_TOTAL time variable.
        (print_time): Get total run time from get_run_time.
        * ggc-page.c (ggc_collect): Push and pop TV_GC instead of
        computing elapsed time explicitly.
        * ggc-simple.c (ggc_collect): Likewise.
        (gc_time): Remove declaration.

2000-04-27  Mark Mitchell  <mark@codesourcery.com>

        * calls.c (combine_pending_stack_adjustment_and_call): New function.
        (expand_call): Use it.

2000-04-27  Jan Hubicka  <jh@suse.cz>

        * flow.c (mark_set_1):  Handle MEMs in ZERO_EXTRACT/SIGN_EXTRACT
        fields.

Thu Apr 27 12:47:00 2000  Alexandre Oliva  <aoliva@cygnus.com>

        * config/mn10300/mn10300.md (movhi): Simplify.  Prefer data
        registers.

Thu Apr 27 17:33:05 MET DST 2000  Jan Hubicka  <jh@suse.cz>

        * function.c (epilogue_done): Pass whole insn to record_insns.

Thu Apr 27 16:55:28 MET DST 2000  Jan Hubicka  <jh@suse.cz>

        * cse.c (CSE_ADDRESS_COST): Remove.
        (find_best_addr): Add new parameter "MODE", use address_cost instead
        of CSE_ADDRESS_COST
        (address_cost): New.
        (fold_rtx): Update call of find_best_addr.
        * rtl.h (address_cost): Declare.
        * loop.c (general_induction_var): Add new parameter "MODE", use
        address_cost instead of ADDRESS_COST
        (init_loop): Use address_cost instead of ADDRESS_COST.
        (check_insn_for_givs): Update call of general_induction_var.
        (find_mem_givs): Likewise.
        (consec_sets_giv): Likewise.
        * config/i386/i386.h (ADDRESS_COST): Call ix86_address_cost.
        * i386.c (ix86_address_cost): New.
        * i386-protos.h (ix86_address_cost): Declare.

Thu Apr 27 11:45:16 2000  Alexandre Oliva  <aoliva@cygnus.com>

        * config/mn10300/mn10300.md (movqi): Simplify.  Prefer data
        registers.

Thu Apr 27 16:11:00 MET DST 2000  Jan Hubicka  <jh@suse.cz>

        * expr.c (store_expr): Use clear_storage instead of direct memset
        libcall.

Thu Apr 27 10:36:51 2000  Alexandre Oliva  <aoliva@cygnus.com>

        * config/mn10300/mn10300.c (mn10300_address_cost): Test
        ASHIFT, AND and LABEL_REF.

Thu Apr 27 15:08:46 MET DST 2000  Jan Hubicka  <jh@suse.cz>

        * invoke.texi (-foptimize-sibling-calls): Fix.

Thu Apr 27 14:54:22 MET DST 2000  Jan Hubicka  <jh@suse.cz>

        * loop.c (load_mems)  Don't use hard registers for the hoisting.

        * unroll.c (unroll_loop): Avoid overflow in the n_iterations
        calculation; rename const_equiv array in the preconditioning code
        from loop_unroll to loop_unroll_precondition

2000-04-27  Richard Henderson  <rth@cygnus.com>

        * flow.c (struct propagate_block_info): Remove new_dead, new_live;
        add new_set.
        (propagate_one_insn): Clear it.  Don't update reg_live here.
        (init_propagate_block_info): Update for pbi member changes.
        (free_propagate_block_info): Likewise.
        (mark_set_1): Know that zero_extract, sign_extract, and
        strict_low_part don't kill their argument.  Alter hard subregs.
        Update new_set for non-CLOBBER sets.  Update reg_live.
        (find_auto_inc): Update reg_live, not new_dead.
        (mark_used_reg): Update reg_live, not new_live.  Examine new_set
        to determine if the reg in question was set this insn.  Only update
        reg info with PROP_REG_INFO.

2000-04-26  Richard Henderson  <rth@cygnus.com>

        * flow.c (allocate_reg_life_data): Set max_regno here ...
        (life_analysis): ... not here.

        * flow.c (calculate_global_regs_live): Force stack pointer
        live at end.

2000-04-26  Richard Henderson  <rth@cygnus.com>

        * jump.c (redirect_exp_1): Rework from old redirect_exp.  Never
        commit change group changes.
        (invert_exp_1): Similarly.
        (redirect_exp, invert_exp): Use them.
        (redirect_jump_1): New.
        (invert_jump_1): New.
        (jump_optimize_1): Remove code subsumed by condexec.c.
        * rtl.h (invert_jump_1, redirect_jump_1): Declare.

2000-04-26  Richard Henderson  <rth@cygnus.com>

        * rtlanal.c (dead_or_set_regno_p): Use find_regno_note.

        * genconfig.c (main): Set all HAVE_foo to 1.

        * graph.c (node_data): Use GET_NOTE_INSN_NAME instead of local array.

2000-04-26  Alex Samuel  <samuel@codesourcery.com>

        * invoke.texi: Document -fssa flag.

2000-04-26  Richard Henderson  <rth@cygnus.com>

        * flow.c (count_reg_sets_1): Remove.
        (count_reg_sets, count_reg_references): Remove.
        (recompute_reg_usage): Implement with update_life_info.
        Reallocate life data.

2000-04-26  Richard Henderson  <rth@cygnus.com>

        * flow.c (update_life_info): Consider blocks null to mean the
        universal set.
        (calculate_global_regs_live): Likewise.
        (life_analysis): Do that instead of collecting all_blocks.

2000-04-26  Richard Henderson  <rth@cygnus.com>

        * flow.c (tidy_fallthru_edge): Don't delete the jump when it's
        a still-valid conditional jump.

2000-04-26  Richard Henderson  <rth@cygnus.com>

        * jump.c (invert_jump): Always invert REG_BR_PROB.  Do it correctly.

        * bb-reorder.c (reorder_basic_blocks): Don't run estimate_probability.
        * flow.c (calculate_loop_depth): Remove.
        * output.h (calculate_loop_depth): Don't declare.
        * toplev.c (rest_of_compilation): Expand calculate_loop_depth
        inline; run estimate_probability at the same time.

2000-04-26  Neil Booth  <NeilB@earthling.net>

        * cpplib.h: "~=" is not a single pp-token.
        * cpplex.c: Correct commentary.

2000-04-26  Richard Henderson  <rth@cygnus.com>

        * flow.c (mark_set_1): New arguments code and flags; update all
        callers.  Track regno_first and regno_last; do HARD_REGNO_NREGS
        test in one place.  Tidy flags tests.  Don't bias REG_N_REFS by
        loop_depth when optimizing for size.  Do new_dead update after
        emitting REG_UNUSED notes.  Merge mark_set_reg code.
        (mark_set_reg): Remove.
        (propagate_one_insn): Use mark_set_1 for call-clobbered registers;
        arrange to not emit REG_UNUSED notes.

2000-04-26  Richard Henderson  <rth@cygnus.com>

        * flow.c (find_auto_inc): Use pbi->bb instead of BLOCK_FOR_INSN.
        * ssa.c (convert_from_ssa): Don't run compute_bb_for_insn.

2000-04-26  Richard Henderson  <rth@cygnus.com>

        * flow.c (propagate_one_insn): Break out from propagate_block.
        (init_propagate_block_info): Likewise.
        (free_propagate_block_info): Likewise.
        (propagate_block): Use them.  Export.
        * basic-block.h: Declare them all.

2000-04-26  Richard Henderson  <rth@cygnus.com>

        * basic-block.h (life_analysis): Declare here ...
        * output.h: ... not here.
        * flow.c (life_analysis): Remove nregs parameter; replace
        remove_dead_code with flags.  Remove ssa dead code check.
        Only init alias analysis if we'll use it.
        * reg-stack.c (reg_to_stack): Update life_analysis arguments.
        * ssa.c (convert_to_ssa): Likewise.
        (convert_from_ssa): Likewise.
        * toplev.c (rest_of_compilation): Likewise.

2000-04-26  Richard Henderson  <rth@cygnus.com>

        * flow.c (flow_delete_block): Rename from delete_block.  Export.
        * basic-block.h (flow_delete_block): Declare.

2000-04-26  David S. Miller  <davem@redhat.com>

        * optabs.c (emit_libcall_block): Verify insns with INSN_P before
        taking a PATTERN of it.

2000-04-26  <NeilB@earthling.net>

        * cpplex.c (spell_other, spell_char): Remove.
        (SPELL_CHAR): New.
        (token_spelling, trigraph_map): Use unsigned chars.
        (_cpp_lex_line): Tidy up the switch statement.
        * cpplib.h: Implement spell_char with spell_string.
        (C): New.

2000-04-26  <RodneyBrown@pmsc.com>

        * pa/pa32-regs.h (HARD_REGNO_MODE_OK): Warning removal.
        * pa/pa64-regs.h (HARD_REGNO_MODE_OK): Warning removal.

2000-04-26  Kaveh R. Ghazi  <ghazi@caip.rutgers.edu>

        * dwarf2out.c (dw_cfi_oprnd_struct, dw_fde_struct, add_fde_cfi,
        reg_save, dwarf2out_frame_debug_expr, dwarf2out_def_cfa,
        dwarf2out_window_save, dwarf2out_args_size, dwarf2out_reg_save,
        dwarf2out_return_save, dwarf2out_return_reg,
        dwarf2out_stack_adjust, dwarf2out_frame_debug, primary_filename,
        add_AT_lbl_id, add_AT_lbl_offset, type_tag, decl_start_label,
        gen_compile_unit_die, dwarf2out_init): Constify a char*.

        * dwarf2out.h (dwarf2out_init): Likewise.

        * dwarfout.c (filename_entry, primary_filename, last_filename,
        type_tag, output_compile_unit_die, dwarfout_init): Likewise.

        * tree.h (dwarf2out_def_cfa, dwarf2out_window_save,
        dwarf2out_args_size, dwarf2out_reg_save, dwarf2out_return_save,
        dwarf2out_return_reg): Likewise.

2000-04-26  Andreas Jaeger  <aj@suse.de>

        * extend.texi (Function Attributes): Fix description of pure
        attribute.

2000-04-26  Jason Merrill  <jason@casey.cygnus.com>

        * integrate.c (output_inline_function): Do clear DECL_DEFER_OUTPUT
        before calling rest_of_compilation.

2000-04-26  Andreas Jaeger  <aj@suse.de>

        * config/mips/linux.h: Remove erroneous commit of #if 0/#endif in
        last patch.

2000-04-25  Richard Henderson  <rth@cygnus.com>

        * cse.c (cse_insn): Emit barrier after unconditional jump.

        * calls.c (expand_call): Disable tail call generation once
        rtx_equal_function_value_matters is false.

        * reg-stack.c (convert_regs_1): Treat EDGE_ABNORMAL_CALL edges
        like EDGE_EH edges.

2000-04-25  Jason Merrill  <jason@casey.cygnus.com>

        * dwarf2out.c (add_bound_info): Don't crash on an unexpanded SAVE_EXPR.

        * dwarfout.c (output_decl): Ignore NAMESPACE_DECLs.

        * dwarf2out.c (gen_subprogram_die): The class-scope declaration DIE
        is the primary DIE for a member function.
        (gen_decl_die): Call set_decl_origin_self here.
        * dwarfout.c (output_decl): And here.
        * integrate.c (output_inline_function): Not here.
        Don't clear DECL_INLINE until after calling rest_of_compilation.
        (set_decl_origin_self): No longer static.
        * tree.h: Add prototype.
        * toplev.c (note_deferral_of_defined_inline_function): Only write
        out abstract instance for actual inlines.

2000-04-25  Alexandre Oliva  <aoliva@cygnus.com>

        * config/mn10300/mn10300.h (REG_CLASS_FROM_LETTER): Return
        EXTENDED_REGS only if TARGET_AM33.
        * config/mn10300/mn10300.md (movsi, addsi): Avoid exposing
        SP_REGS to register allocation and reloading unless absolutely
        necessary.
        (movsi3): Remove special-case of adding non-constants to SP.

2000-04-25  Kaveh R. Ghazi  <ghazi@caip.rutgers.edu>

        * aclocal.m4 (gcc_AC_NEED_DECLARATION): This macro now requires
        INCLUDES to search and does not provide any of its own.  Also it
        now accepts optional ACTION-IF-NEEDED and ACTION-IF-NOT-NEEDED
        parameters.  Also it does not call AC_DEFINE.
        (gcc_AC_NEED_DECLARATIONS): Likewise.  Also this macro now calls
        AC_DEFINE and provides for automatic entries for autoheader.
        (gcc_AC_FUNC_PRINTF_PTR): Cleanup C code in test.

        * configure.in (gcc_AC_NEED_DECLARATIONS): Save and restore CFLAGS
        so we can pass -I flags and include gansidecl.h/system.h in this
        test.

        * acconfig.h: Delete all NEED_DECLARATION_* entries.

2000-04-25  Kaveh R. Ghazi  <ghazi@caip.rutgers.edu>

        * acconfig.h (ENABLE_STD_NAMESPACE, ENABLE_CHECKING,
        ENABLE_TREE_CHECKING, ENABLE_RTL_CHECKING, ENABLE_GC_CHECKING,
        ENABLE_GC_ALWAYS_COLLECT): Delete entries.

        * configure.in (ENABLE_STD_NAMESPACE, ENABLE_CHECKING,
        ENABLE_TREE_CHECKING, ENABLE_RTL_CHECKING, ENABLE_GC_CHECKING,
        ENABLE_GC_ALWAYS_COLLECT): Use three argument form of AC_DEFINE
        for these macros.  Clean up spacing and linewraps.

2000-04-26  Jason Merrill  <jason@casey.cygnus.com>

        * calls.c (expand_call): Use get_callee_fndecl.

        * print-tree.c (print_node): Print the chain of an _EXPR.

Tue Apr 25 16:16:04 2000  Andrew MacLeod  <amacleod@cygnus.com>
                          Jim Wilson  <wilson@cygnus.com>
                          Andrew Haley  <aph@cygnus.com>

        * config/ia64/crtbegin.asm: Add IA-64 unwind support.  Correct alloc
        and gp save/restore problems.
        * config/ia64/crtend.asm: Add IA-64 unwind support.
        * config/ia64/ia64.c (ia64_compute_frame_size): Don't include pr_size
        in fr_pad_size calculation.
        (save_restore_insns): Move PR save area.  Correct uses of
        RTX_FRAME_RELATED_P.
        (ia64_expand_prologue): Mark alloc with RTX_FRAME_RELATED_P.
        (ia64_expand_epilogue): Add eh_epilogue support.
        (ia64_function_prologue): Emit .prologue directive.
        (ia64_init_machine_status, ia64_mark_machine_status): New functions.
        (ia64_override_options): Set init_machine_status and
        mark_machine_status.
        (rtx_needs_barrier): Handle bsp reads and writes.
        (spill_offset, sp_offset, spill_offset_emitted, tmp_reg, tmp_saved):
        New static variables.
        (process_set, process_for_unwind_directive): New functions.
        * config/ia64/ia64.h (ASM_OUTPUT_XDATA_CHAR, ASM_OUTPUT_XDATA_SHORT,
        ASM_OUTPUT_XDATA_INT, ASM_OUTPUT_XDATA_DOUBLE_INT, ASM_OUTPUT_EH_CHAR,
        ASM_OUTPUT_EH_SHORT, ASM_OUTPUT_EH_INT, ASM_OUTPUT_EH_DOUBLE_INT): New
        macros.
        (EH_FRAME_SECTION_ASM_OP): Define to IA_64.unwind section.
        (IA64_UNWIND_INFO, HANDLER_SECTION, IA64_UNWIND_EMIT): Define.
        (struct machine_function): Define.
        * config/ia64/ia64.md (bsp_value, set_bsp, eh_epilogue): New patterns.

2000-04-25  Bruce Korb  <bkorb@gnu.org>

        * fixinc/Makefile.in: make the removal of old programs more
        robust
        * fixinc/mkfixinc.sh: use the two new targets in the Makefile:
        install-bin and install-sh

2000-04-25  Nick Clifton  <nickc@cygnus.com>

        * integrate.c (FUNCTION_ATTRIBUTE_INLINABLE_P): If not
        defined, define to return zero.
        (function_cannot_inline_p): If a function has any target
        specific attributes, then use the macro
        FUNCTION_ATTRIBUTE_INLINABLE_P to allow the target to decide
        whether it can be inlined.  If it cannot, issue a suitable
        explanation.

        * tm.texi: Add a new node 'Inlining' to document the new macro
        FUNCTION_ATTRIBUTE_INLINABLE_P.

2000-04-25  Zack Weinberg  <zack@wolery.cumb.org>

        * cpplib.h (struct cpp_buffer): Add 'mapped' flag; fix
        commentary.

2000-04-25  Neil Booth  <NeilB@earthling.net>

        Restore previous patch, plus the following fixes:

        * cpphash.c (_cpp_create_definition): Test PREV_WHITESPACE in
        flags, not CPP_OPEN_PAREN.
        * cpplex.c (expand_token_space, init_token_list,
        cpp_free_token_list): Put the dummy token at list->tokens[-1].
        (_cpp_lex_line, _cpp_lex_file): token list is 0-based.

Tue Apr 25 14:06:40 2000  Alexandre Oliva  <oliva@lsd.ic.unicamp.br>

        * config/i386/freebsd.h (INT_ASM_OP): Define.

Tue Apr 25 14:51:07 MET DST 2000  Jan Hubicka  <jh@suse.cz>

        * loop.c (strength_reduce): Fix typo in the last checkin.

Tue Apr 25 07:33:12 2000  Richard Kenner  <kenner@vlsi1.ultra.nyu.edu>

        * stor-layout.c (finalize_record_size): Simplify to use existing
        functions.
        (compute_record_mode): No longer static.
        * tree.h (compute_record_mode): New declaration.

2000-04-25  Neil Booth  <NeilB@earthling.net>

        * Revert my patch below until cause of build failures
        determined.

2000-04-25  Richard Henderson  <rth@cygnus.com>

        * combine.c (combine_instructions): Add missing argument
        to try_combine.

        * toplev.c (rest_of_compilation): Delay sibcall optimization
        until after emit_eh_context.

2000-04-24  Nick Clifton  <nickc@redhat.com>

        * combine.c (combine_instructions): Do not try to combine a
        sequence of insns when the second insn has been replaced by a
        note.

Mon Apr 24 17:34:18 2000  Mumit Khan  <khan@xraylith.wisc.edu>

        * gcc.c (load_specs): New static function.
        (read_specs): Use it.

        * gcc.c (lookup_compiler): Make multiple passes for case
        insensitive filesystems.

2000-04-24  Neil Booth  <NeilB@earthling.net>

        * cpphash.c: replace HSPACE_BEFORE with PREV_WHITESPACE.
        * cpphash.h (_cpp_check_directive): new.
        * cpplex.c (handle_newline, cpp_free_token_list,
        init_trigraph_map, trigraph_ok, trigraph_replace,
        backslash_start, skip_block_comment, skip_line_comment,
        skip_whitespace, parse_name, parse_number, parse_string,
        copy_comment, _cpp_lex_line, spell_char, spell_string,
        spell_comment, spell_name, spell_other, _cpp_lex_file,
        _cpp_output_list): new.
        (expand_name_space): take length argument.
        (init_token_list): add comment list initialisation.
        (cpp_scan_line): use auto_expand_name_space.  PREV_WHITESPACE
        instead of HSPACE_BEFORE.

        * cpplib.c (_cpp_check_directive): new
        * cpplib.h (cpp_name, PREV_WHITESPACE, PREV_COMMENT,
        DIGRAPH, UNSIGNED_INT, TOK_NAME): new.
        (HSPACE_BEFORE): delete.
        (TTYPE_TABLE): rearrange.
        (struct cpp_toklist): update.

2000-04-24  Kaveh R. Ghazi  <ghazi@caip.rutgers.edu>

        * aclocal.m4 (gcc_AC_HEADER_STRING, gcc_AC_FUNC_PRINTF_PTR,
        gcc_AC_C_VOLATILE, gcc_AC_FUNC_MKDIR_TAKES_ONE_ARG): Use the three
        argument form of AC_DEFINE.

        * configure.in (DEFAULT_LINKER, DEFAULT_ASSEMBLER,
        HAVE_INTTYPES_H, PACKAGE, VERSION, ENABLE_WIN32_REGISTRY,
        WIN32_REGISTRY_KEY, HAVE_GAS_SUBSECTION_ORDERING, HAVE_GAS_WEAK,
        HAVE_GAS_HIDDEN, HAVE_AS_REGISTER_PSEUDO_OP, AS_SPARC64_FLAG,
        HAVE_AS_OFFSETABLE_LO10, ENABLE_NEW_GXX_ABI): Likewise.

        * acconfig.h: Delete stubs made redundant by 3-arg AC_DEFINE.

2000-04-24  Kaveh R. Ghazi  <ghazi@caip.rutgers.edu>

        * Makefile.in (GCC_FOR_TARGET, GCC_CFLAGS, LIBGCC2_INCLUDES,
        deduced.h): Use -isystem, not -I, for including system headers.

2000-04-24  Nick Clifton  <nickc@cygnus.com>

        * config/fr30/fr30.md (addsi3): Do not use small add instruction if
        the source register is the frame pointer or arg pointer.
        (addsi3_small_int): Disallow if source register is the frame
        pointer or arg pointer.

2000-04-24  Kaveh R. Ghazi  <ghazi@caip.rutgers.edu>

        * configure.in (ENUM_BITFIELDS_ARE_UNSIGNED): Delete redundant
        call to AC_MSG_RESULT.

2000-04-24  Martin v. Löwis  <loewis@informatik.hu-berlin.de>

        * invoke.texi: Correct grammatical errors, document
        -fno-gnu-keywords as identical to -fno-asm for C++.

2000-04-24  Kaveh R. Ghazi  <ghazi@caip.rutgers.edu>

        * aclocal.m4: (GCC_HEADER_STRING, GCC_NEED_DECLARATION,
        GCC_NEED_DECLARATIONS, GCC_FUNC_VFPRINTF_DOPRNT,
        GCC_FUNC_PRINTF_PTR, GCC_PROG_LN_S, GCC_PROG_LN, GCC_C_VOLATILE,
        AC_GCC_C_LONG_DOUBLE, GCC_FUNC_MKDIR_TAKES_ONE_ARG,
        EGCS_PROG_INSTALL): Rename autoconf macros with prefix gcc_AC_.

        * configure.in (AC_GCC_C_LONG_DOUBLE, GCC_PROG_LN, GCC_PROG_LN_S,
        GCC_C_VOLATILE, EGCS_PROG_INSTALL, GCC_HEADER_STRING,
        GCC_FUNC_VFPRINTF_DOPRNT, GCC_FUNC_PRINTF_PTR,
        GCC_NEED_DECLARATIONS, GCC_FUNC_MKDIR_TAKES_ONE_ARG): Invoke with
        new macros names.

2000-04-24  Mumit Khan  <khan@xraylith.wisc.edu>

        * c-pragma.c (push_alignment): Use BITS_PER_UNIT macro.
        (pop_alignment): Likewise.
        (handle_pragma_token): Likewise.

2000-04-24  Robert Lipe <robertlipe@usa.net>

        * tree.h (tree_decl): Member `mode' now ENUM_BITFIELD.

2000-04-24  Hiroyuki Machida <machida@sm.sony.co.jp>

        * combine.c (try_combine): Update reg_nonzero_bits of
        newi2pat before newpat.

Mon Apr 24 10:19:48 MET DST 2000  Jan Hubicka  <jh@suse.cz>

        * loop.c (strength_reduce): Simplify test to INSN_P.
        (record_giv): Attempt to simplify the add value, use CONSTANT_P
        expressions instead of CONST_INT.
        (express_from_1): Likewise.

2000-04-24  Mark Mitchell  <mark@codesourcery.com>

        * regs.h (reg_n_max): Don't declare.
        * flow.c (reg_n_max): Don't define.
        * regclass.c (renumber): Don't initialize to zero.
        (regno_allocated): Likewise.
        (reg_n_max): Define.
        (allocate_reg_info): Don't initialize unnecessarily.

Mon Apr 24 00:21:36 2000  Jeffrey A Law  (law@cygnus.com)

        * genattrtab.c (find_attr): Initialize unsigned_p, func_units_p
        and blockage_p in the newly allocated attribute.

Sun Apr 23 20:16:49 2000  Alexandre Oliva  <aoliva@cygnus.com>

        * config/mn10300/mn10300.md (addsi): `inc4' on address
        registers does not modify cc, but `inc' on an extended
        register does.

Sun Apr 23 16:24:35 2000  Denis Chertykov  <denisc@overta.ru>

        * reload.c (find_equiv_reg): Checks all valueno regs
        as a reload_reg_p regs.

2000-04-23  Zack Weinberg  <zack@wolery.cumb.org>

        * cpphash.c (collect_objlike_expansion): Add sanity check.
        (special_symbol): Remove case T_CONST, T_XCONST, T_MCONST.  If
        the buffer is the empty string, return.  Mark __DATE__ and
        __TIME__ as XCONST nodes, not MCONST.
        (_cpp_macroexpand): Avoid pushing an empty buffer.
        (funlike_macroexpand): Don't pop token_buffer here.

Sun Apr 23 18:37:53 2000  Alexandre Oliva  <aoliva@cygnus.com>

        * config/mn10300/mn10300.h (REGNO_IN_RANGE_P): New macro.
        (REGNO_DATA_P, REGNO_ADDRESS_P, REGNO_SP_P): New macros.
        (REGNO_EXTENDED_P, REGNO_AM33_P): New macros.
        (REGNO_OK_FOR_BASE_P): Define in terms of them.
        (REGNO_OK_FOR_BIT_BASE_P, REGNO_OK_FOR_INDEX_P): Likewise.
        (REG_OK_FOR_BASE_P): Define in terms of the REGNO macro.
        (REG_OK_FOR_BIT_BASE_P, REG_OK_FOR_INDEX_P): Likewise.

Sun Apr 23 22:23:08 MET DST 2000  Jan Hubicka  <jh@suse.cz>

        * loop.c (simplify_giv_expr):  Be more agressive on simplifying
        constant MULT givs.

2000-04-23  Zack Weinberg  <zack@wolery.cumb.org>

        * cpphash.h (struct definition): Move file, line, col members...
        (struct hashnode): ... here.  Also add 'disabled' flag.
        (enum node_type): Add T_VOID, T_XCONST, T_FMACRO, and
        T_IDENTITY.  Remove T_DISABLED.
        Update prototypes.

        * cpphash.c (_cpp_dump_definition): Split out dump_DEFINITION.
        (collect_expansion): Split into collect_objlike_expansion and
        collect_funlike_expansion.
        (_cpp_macroexpand): Split out scan_arguments, stringify, and
        funlike_macroexpand.
        (_cpp_compare_defs): Rename compare_defs, make static.
        (_cpp_make_hashnode): Initialize hp->disabled.
        (macro_cleanup): Adjust for new token types.  Clear
        m->disabled.
        (_cpp_create_definition): Move code here to determine what
        sort of macro it is, and code to check for redefinitions, from
        do_define.  Implement a few simple cases without creating a
        full DEFINITION.
        (_cpp_macroexpand, special_symbol, _cpp_dump_definition):
        Handle the simple cases.
        (push_macro_expansion): Set buf->has_escapes and hp->disabled
        here.

        * cppinit.c (builtin_array): Change MCONST to XCONST
        everywhere.
        * cpplex.c (maybe_macroexpand): Handle IDENTITY macros here;
        fix check for disabled and function-like macros.
        * cpplib.c (do_define): Move most logic to
        _cpp_create_definition.
        (do_undef): Handle new special token types.

Sun Apr 23 14:27:44 MET DST 2000  Jan Hubicka  <jh@suse.cz>

        * loop.c (maybe_eliminate_biv_1): Use GET_CODE (x) == CONST_INT instead
        of CONSTANT_P for mult_val; always use validate_change to update insn.

2000-04-22  Zack Weinberg  <zack@wolery.cumb.org>

        * cpphash.c (trad_stringify, add_pat): New functions.
        (collect_expansion): Restore support for -traditional syntax.
        Use trad_stringify and add_pat.
        (_cpp_macroexpand): Restore support for -traditional semantics.
        * cpplex.c (_cpp_scan_line): Don't change space_before if we
        get a COMMENT token.
        (_cpp_lex_token): Provide COMMENT tokens to caller if
        traditional and parsing_define_directive.
        (skip_comment): Warn about // comments if -Wtraditional.
        * cpplib.c (do_define): Fix typo.  Create EMPTY nodes with
        proper node type.
        (do_undef): Don't warn about undefining EMPTY nodes.

Sat Apr 22 22:35:38 MET DST 2000  Jan Hubicka  <jh@suse.cz>

        * loop.c (strength_reduce): Fix biv removal code.

2000-04-22  Richard Henderson  <rth@cygnus.com>

        * predict.c (estimate_probability): Examine both sides of
        a branch for no exits.  Use 90% not 50% for predict taken.
        Reorg for one copy of note generation code.

2000-04-22  Richard Henderson  <rth@cygnus.com>

        * flow.c (mark_used_reg): Hack around rs6000 eliminable pic reg.

2000-04-22  Richard Henderson  <rth@cygnus.com>

        * diagnostic.c (init_output_buffer): Don't initialize format_args.
        (output_clear): Likewise.
        (output_printf): Use va_copy.
        (vline_wrapper_message_with_location): Likewise.
        (v_message_with_decl): Likewise.
        (line_wrapper_printf): VA_START infor buffer.format_args directly.
        * system.h (va_copy): Provide default implementation.

2000-04-22  Richard Henderson  <rth@cygnus.com>

        * predict.c (expected_value_to_br_prob): Don't bomb if op1 of
        the collected condition is not a constant.

2000-04-22  Gabriel Dos Reis  <gdr@codesourcery.com>

        * diagnostic.h: New file.

        * Makefile.in (diagnostic.o): Depends on diagnostic.h

        * diagnostic.c: Tweak.  Rationalize the output logic.  Adjust
        various function prototypes.
        (diagnostic.h): #include.
        (struct output_buffer): Move into diagnostic.h.
        (get_output_prefix): Rename to output_get_prefix.  Export.
        (init_output_buffer): Export. Break out.  Ajust intialization.
        (output_space_left, output_append): Export.
        (output_newline): Rename to output_add_newline.  Export.
        (output_clear): Nullify additional output_buffer fields.
        (output_puts): Rename to output_add_string.  Export.
        (dump_output): Rename to output_flush_on.  Export.
        (build_location_prefix): Constify return-type.
        (emit_output_prefix): Rename to output_emit_prefix. Export.
        (set_real_maximum_length): New function.
        (output_set_maximum_length): Ditto
        (output_clear): Ditto.
        (output_add_character): Ditto.
        (output_add_integer): Ditto.
        (output_add_space): Ditto.
        (output_format): Ditto.
        (output_printf): Adjust buffer initialization.
        (vline_wrapper_message_with_location): Ditto.
        (v_message_with_decl): Ditto.  Adjust call to output_puts
        and get_output_prefix.
        (default_print_error_function): Adjust buffer intialization.

Sat Apr 22 06:45:04 2000  Richard Kenner  <kenner@vlsi1.ultra.nyu.edu>

        * expr.c (preexpand_calls, case CALL_EXPR): Don't look at TYPE_SIZE
        of VOID_TYPE.

Fri Apr 21 18:33:09 2000  Alexandre Oliva  <aoliva@cygnus.com>

        * config/mn10300/mn10300.h (REGNO_REG_CLASS): Use NO_REGS instead
        of explicit 0.

Fri Apr 21 18:30:00 2000  Alexandre Oliva  <aoliva@cygnus.com>

        * config/mn10300/mn10300.h (REGISTER_MOVE_COST): Provide more
        accurate data about SP moves.

Fri Apr 21 18:28:28 2000  Alexandre Oliva  <aoliva@cygnus.com>

        * config/mn10300/mn10300.h (ADDITIONAL_REGISTER_NAMES): Added
        aliases to AM33 registers.

Fri Apr 21 18:26:17 2000  Alexandre Oliva  <aoliva@cygnus.com>

        * config/mn10300/mn10300.h (REG_CLASS_CONTENTS): Added register 16
        to all EXTENDED bitmaps.

Fri Apr 21 18:17:12 2000  Alexandre Oliva  <aoliva@cygnus.com>

        * config/mn10300/mn10300-protos.h (mn10300_address_cost): Declare.
        * config/mn10300/mn10300.h (ADDRESS_COST): New macro.
        * config/mn10300/mn10300.c (mn10300_address_cost): New function.

Fri Apr 21 18:11:56 2000  Alexandre Oliva  <aoliva@cygnus.com>

        * config/mn10300/mn10300.md (movdi, movdf): Do not use `movu' when
        the operand is not constant.

Fri Apr 21 14:58:29 2000  Denis Chertykov  <denisc@overta.ru>

        * reload.c (find_equiv_reg): Checks all valueno and regno regs
        as a call-clobbered regs.

Fri Apr 21 13:30:26 2000  Richard Kenner  <kenner@vlsi1.ultra.nyu.edu>

        * rtl.c: Use NOTE_INSN_REPEATED_LINE_NUMBER and NOTE_INSN_RANGE_BEG.
        * rtl.h: Likewise.
        * rtl.def: Update comment.
        * function.c (expand_function): Use NOTE_INSN_REPEATED_LINE_NUMBER.
        * integrate.c (expand_inline_function): Likewise.
        * profile.c (branch_prob): Likewise.
        * ggc-common.c (ggc_mark_rtx_children): Use NOTE_INSN_RANGE_BEG.
        * print-rtl.c (print_rtx): Likewise.
        * haifa-sched.c (sched_analyze, unlink_other_notes): Likewise.
        (reemit_notes): Likewise; also use enum insn_note.

        * stor-layout.c (layout_decl): Only set DECL_MODE if not already set.
        (place_field): Properly compute know and actual alignment.

        * gengenrtl.c (gencode): Write obstack_alloc_rtx function start
        in proper format.

        * cse.c (cse_insn): In (set REG0 REG1) case, remove a REG_EQUAL
        note for REG1.

2000-04-21  Zack Weinberg  <zack@wolery.cumb.org>

        * cpphash.c (struct arg, struct arglist): Const-ify strings.
        (warn_trad_stringify, duplicate_arg_p): New helper functions.
        (collect_expansion): Rewrite to scan over a token list.
        Remove -traditional support.
        (collect_formal_parameters): Rename to collect_params; rewrite
        to scan over a token list.
        (_cpp_create_definition): Adjust to scan a token list.
        (_cpp_macroexpand): Remove -traditional support.
        (_cpp_compare_defs): Whitespace is now canonicalized.
        (comp_def_part): Delete function.

        * cpphash.h: Update prototypes.
        * cpplex.c (init_token_list): Don't set lineno if there is no
        buffer.
        (pedantic_whitespace): New function.
        (_cpp_scan_line): Mark tokens that had hspace before.  Don't
        consume a newline.  Use pedantic_whitespace.
        (_cpp_lex_token): Remove support for -traditional macros.
        (_cpp_get_define_token): Delete.
        (_cpp_get_directive_token): Do the real work here.  Use
        pedantic_whitespace.
        (_cpp_init_input_buffer): Initialize pfile->directbuf.

        * cpplib.c (get_macro_name): Delete.
        (do_define): Read the entire line into pfile->directbuf, then
        feed the token list to _cpp_create_definition.
        * cpplib.h (HSPACE_BEFORE): new define.
        (struct cpp_reader): Add a toklist member, "directbuf".

        * predict.c (estimate_probability): New heuristic: if a jump
        branches around a block with no successors, predict it taken.
        Disentangle control flow.

2000-04-20  Richard Henderson  <rth@cygnus.com>

        * loop.c (emit_iv_add_mult): Revert last change.

2000-04-20  Zack Weinberg  <zack@wolery.cumb.org>

        * cpplib.h (enum cpp_ttype): Add token types for all
        punctuators.  Distinguish pp-numbers from valid C numbers.
        Give some tokens better names.  Initialize from macro.
        (struct cpp_name, cpp_token, cpp_toklist): New data
        structures.
        Update prototypes.
        * cpplex.c (bump_column, expand_name_space,
        expand_token_space, init_token_list, cpp_output_list,
        _cpp_scan_line):  New functions.
        (output_line_command): Add third argument, new line number.
        * cpphash.h: Update prototypes.
        * cppexp.c, cpphash.c, cpplib.c, scan-decls.c: Update for new
        token names.

2000-04-20  Richard Henderson  <rth@cygnus.com>

        * config/alpha/alpha.c (alpha_emit_floatuns): Emit missing barrier.

2000-04-20  Zack Weinberg  <zack@wolery.cumb.org>

        * c-common.c (decl_attributes) [A_ALIAS]: Set TREE_USED on the
        object pointed to.

Thu Apr 20 14:19:18 MET DST 2000  Jan Hubicka  <jh@suse.cz>

        * loop.c (emit_iv_add_mult):  Simplify it's input and emit
        REG_EQUAL note explaining the calculated value.

        * calls.c (expand_call): Avoid unnecesary precalculation
        and outgoing parameters space guarding for sibling calls.
        (store_one_arg): Likewise.

Thu Apr 20 08:01:07 2000  Richard Kenner  <kenner@vlsi1.ultra.nyu.edu>

        * toplev.c (enum dump_file_index, dump_file): Add DFI_sibling.
        (rest_of_compilation): Write sibling dump file and account
        for time as jump time.
        * invoke.texi: Update documentation on dump flags.

2000-04-19  Marek Michalkiewicz  <marekm@linux.org.pl>

        * avr.c: #include "system.h" instead of <stdio.h> and <stdlib.h>.

2000-04-19  Zack Weinberg  <zack@wolery.cumb.org>

        * cpphash.c (special_symbol): Represent an empty macro with
        "\r \r " not just "\r ".
        (_cpp_macroexpand): Correct condition for the foo ( ) special
        case.
        (unsafe_chars): Handle EOF as second argument.
        (push_macro_expansion): Simplify test for removing escape at
        end.  Do not trim both escapes if there is no text in between.

2000-04-19  Jim Blandy  <jimb@redhat.com>

        * dwarf2out.c (DWARF2_ADDR_SIZE): New macro.  Use it instead
        of PTR_SIZE, when appropriate.

2000-04-19  Mark Mitchell  <mark@codesourcery.com>

        * system.h (ONLY_INT_FIELDS): Make sure it is defined.
        (USE_ENUM_BITFIELDS): Fix typo.

Wed Apr 19 12:14:55 2000  Richard Kenner  <kenner@vlsi1.ultra.nyu.edu>

        * stor-layout.c (place_field): Set rli->offset_align properly.

2000-04-19  Kaveh R. Ghazi  <ghazi@caip.rutgers.edu>

        * mips.h (BITS_PER_WORD, UNITS_PER_WORD, UNITS_PER_FPREG,
        INT_TYPE_SIZE, LONG_TYPE_SIZE, POINTER_SIZE, POINTER_BOUNDARY,
        PARM_BOUNDARY): Remove unnecessary casts.

Wed Apr 19 12:02:37 MET DST 2000  Jan Hubicka  <jh@suse.cz>

        * calls.c (precompute_arguments): Remove must_preallocate and
        args_size calls.
        (expand_call): Update call of precompute_arguments.

        * loop.c (check_insn_for_bivs, for_every_insn_in_loop,
        check_insn_for_givs): Break out from ...
        (strength_reduce) ... here; use for_every_insn_in_loop to call
        check_insn_for_givs.
        * loop.h (for_every_insn_in_loop): Declare.
        (loop_insn_callback): New type.

2000-04-18  Zack Weinberg  <zack@wolery.cumb.org>

        * cpplib.c (do_pragma_poison):  Strings in the token buffer are
        not nul-terminated.

Tue Apr 18 16:04:12 2000  Jim Wilson  <wilson@cygnus.com>

        * config/ia64/sysv4.h (SELECT_SECTION): Use data_section if
        flag_pic and RELOC.

2000-04-18  Zack Weinberg  <zack@wolery.cumb.org>

        * cccp.c, cexp.y, cexp.c, cccp.1: Removed.

        * configure.in: Delete --disable-cpplib option and all
        references to cpp_main.
        * configure: Regenerate.
        * Makefile.in: Remove all references to CCCP, CCCP_OBJS,
        @cpp_main@, cccp.c, cexp.c, cexp.y, cexp.output, cexp.o,
        cccp.o, cccp, or cppmain.  Link cppmain.o straight to
        cpp$(exeext).  Add --no-headers to makeinfo command line when
        generating INSTALL.  Install and uninstall cpp.1 manpage, not
        cccp.1.
        * install.texi: Delete all references to cexp.y/cexp.c.
        Delete ancient instructions for compiling GCC on 3b1.
        * INSTALL: Regenerate.

        * cppfiles.c, cpplib.h, jump.c, protoize.c, c-lex.c, mips/t-ecoff,
        mips/t-elf, mips/t-r3900: Remove references to cccp.c.
        * convex.h, fx80.h, m68k.h, pdp11.h: Remove references to
        cexp.c/cexp.y.
        * xm-linux.h, xm-os2.h, romp.h: Remove definition of BSTRING,
        which is no longer tested anywhere.

        * cppinit.c (handle_option): Don't run error message through
        gettext twice.

Tue Apr 18 14:16:47 2000  Richard Kenner  <kenner@vlsi1.ultra.nyu.edu>

        * conflict.c (conflict_graph_add): Pass enum type to htab_find_slot.
        * cpperror.c (hashtab.h): Now include.
        * cppexp.c (hashtab.h): Likewise.
        * cpplex.c (hashtab.h): Likewise.
        * cppfiles.c (hashtab.h): Likewise.
        (find_include_file, _cpp_calc_hash, cpp_read_file): Pass enum type
        to htab_find_slot_with_hash.
        * cpphash.c (hashtab.h): Now include.
        (_cpp_lookup_slot): INSERT is now enum insert_option.
        * cpphash.h (_cpp_lookup_slot): Likewise.
        * cppinit.c (hashtab.h): Include earlier.
        (initialize_builtins): Pass enum to htab_find_slot.
        * cpplib.c (hashtab.h): Now include.
        (do_define, do_undef): Pass enum type to _cpp_lookup_slot.
        (do_pragma_poison, do_assert): Likewise.
        * emit-rtl.c (gen_rtx_CONST_INT): Pass enum to
        htab_find_slot_with_hash.
        * simplify-rtx.c (cselib_lookup_mem, cselib_lookup): Likewise.
        * tree.c (type_hash_add): Likewise.
        (build1): Minor cleanup.

        * ggc-common.c: Add missing blanks.
        * print-tree.c (print_node): Print DECL_OFFSET_ALIGN.
        * tree.h (DECL_OFFSET_ALIGN): Fix typo in comment.

        * stmt.c (mark_case_node): New function.
        (mark_case_nesting): Call it.

        * expmed.c (emit_store_flag): If comparing two-word integer
        with zero, can optimize NE, EQ, GE, and LT.

        * c-decl.c (mark_binding_level): Use 'for' instead of `while'.
        * conflict.c: Minor cleanups.
        * optabs.c: Add blank line
        * simplify-rtx.c: Minor cleanups.

2000-04-18  Stan Cox  <scox@cygnus.com>

        * gengenrtl.c (genlegend): Fix misspelling.

2000-04-18  Robert Lipe  <robertlipe@usa.net>

        * configure.in (ENUM_BITFIELDS_ARE_UNSIGNED): Added.  Check that
        bitfields of the host compiler are not signed quantities.
        * config.in: Regenerate.
        * configure: Regenerate.
        * system.h (USE_ENUM_BITFIELDS): Added.
        (ENUM_BITFIELDS): Added.
        * rtl.h (rtx_def): Members `code', `mode', now ENUM_BITFIELD.
        (SHORT_ENUM_BUG): Deleted.
        * tree.h (tree_common): Members `code', `mode', `built_in_class',
        now ENUM_BITFIELD.
        * config/i386/xm-sco.h (ONLY_INT_FIELDS): Deleted.
        (CODE_FIELD_BUG): Likewise.
        * config/m68k/x-apollo68 (CC): Deleted SHORT_ENUM_BUG.
        (OLD_CC): Likewise.
        * config/m68k/x-ccur (X_CFLAGS): Likewise.

2000-04-18  Mark Mitchell  <mark@codesourcery.com>

        * cpplex.c (_cpp_lex_token): Don't call CPP_BUMP_LINE when the
        mark is active.

2000-04-17  Zack Weinberg  <zack@wolery.cumb.org>

        * cppexp.c (lex): Don't assume tokens are NUL terminated.
        * cpplib.c (do_include, do_import, do_include_next,
        read_line_number, detect_if_not_defined): Likewise.
        * cpphash.c (collect_expansion): Likewise.
        (special_symbol, _cpp_macroexpand): Check return from
        cpp_file_buffer.
        * cpphash.h (CPP_NUL_TERMINATE, CPP_NUL_TERMINATE_Q): Delete
        macros.  Delete all uses.

        * gcc.dg/cpp-mi.c: Add two more test cases.
        * gcc.dg/cpp-mind.h, gcc.dg/cpp-mindp.h: New files.

2000-04-17  Richard Henderson  <rth@cygnus.com>

        * bb-reorder.c (fixup_reorder_chain): Don't look up new block again.
        (reorder_basic_blocks): If no epilogue in rtl, force last block last.

2000-04-17  Mark Mitchell  <mark@codesourcery.com>

        * function.c (expand_function_start): Use hard_function_value to
        compute the RTL to use for DECL_RESULT.

Mon Apr 17 23:35:29 MET DST 2000  Jan Hubicka  <jh@suse.cz>

        * i386.c (athlon_cost): Fix lea, divide and XFmode move costs.
        (x86_integer_DFmode_moves, x86_partial_reg_dependency,
         x86_memory_mismatch_stall): New global variables.
        (ix86_adjust_cost): Handle MEMORY_BOTH on places MEMORY_STORE was only
        alloved; fix load penalties for Athlon.
        * i386.h (x86_integer_DFmode_moves, x86_partial_reg_dependency,
        x86_memory_mismatch_stall): Declare.
        (TARGET_INTEGER_DFMODE_MOVES, TARGET_PARTIAL_REG_DEPENDENCY,
         TARGET_MEMORY_MISMATCH_STALL): New.
        * i386.md (athlon scheduling parameters): Fix latencies according to
        Athlon Optimization Manual.
        (sahf, xchg, fldcw, leave instruction patterns): Set athlon_decode to
        vector.
        (fsqrt instruction patterns): Set athlon_decode to direct.
        (movhi_1): Promote for TARGET_PARTIAL_REG_DEPENDENCY and for
        PARTIAL_REGISTER_STALL with !TARGET_HIMODE_MATH machines.
        (movqi_1): Handle promoting correctly for TARGET_PARTIAL_REG_DEPENDENCY
        and TARGET_PARTIAL_REGISTER_STALL machines.
        (pushdf_nointeger): New pattern.
        (pushdf_integer): Rename from pushdf.
        (movdf_nointger): Enable for !TARGET_INTEGER_DFMODE_MOVES machines.
        (movdf_intger): Disable for !TARGET_INTEGER_DFMODE_MOVES machines.

2000-04-17  Richard Henderson  <rth@cygnus.com>

        * loop.c (canonicalize_condition): Add WANT_REG argument.
        Stop the search if we match it.
        * expr.h (canonicalize_condition): Update decl.
        * predict.c (expected_value_to_br_prob): Use it.  Track last
        expected value note.
        (find_expected_value): Remove.

        * reorg.c (mostly_true_jump): Always use BR_PROB if present.

2000-04-17  Zack Weinberg  <zack@wolery.cumb.org>

        * aclocal.m4 (AM_GNU_GETTEXT): Don't AC_REQUIRE([AC_FUNC_MMAP]).
        (AC_FUNC_MMAP_FILE): New macro, tests read-only private map of
        a plain file.
        * configure.in: Call AC_FUNC_MMAP_FILE.
        * configure: Regenerate.
        * config.in: Regenerate.

        * intl/loadmsgcat.c: Test HAVE_MMAP_FILE not HAVE_MMAP.
        * fixinc/fixincl.c: Likewise.

2000-04-17  Richard Henderson  <rth@cygnus.com>

        * builtins.c (expand_builtin_expect): New.
        (expand_builtin): Call it.
        * builtins.def (BUILT_IN_EXPECT): New.
        * c-common.c (c_common_nodes_and_builtins): Declare __builtin_expect.
        * extend.texi: Document it.

        * predict.c (expected_value_to_br_prob): New.
        (find_expected_value): New.
        * basic-block.h (expected_value_to_br_prob): Declare.
        * toplev.c (rest_of_compilation): Invoke it.

        * rtl.h (NOTE_EXPECTED_VALUE): New.
        (NOTE_INSN_EXPECTED_VALUE): New.
        * rtl.c (note_insn_name): Update.
        * print-rtl.c (print_rtx): Reorg NOTE_LINE_NUMBER special
        cases; handle NOTE_INSN_EXPECTED_VALUE.

2000-04-17  Jakub Jelinek  <jakub@redhat.com>

        * config/sparc/sparc.c (eligible_for_sibcall_delay): Cannot use
        leaf sibcall delay slot if flag_pic.
        (output_sibcall): Always emit call for leaf sibcall if flag_pic.

2000-04-17  Kaveh R. Ghazi  <ghazi@caip.rutgers.edu>

        * Makefile.in (stmp-fixproto): Acknowledge errors in fixproto.

        * fixproto: If fix-header fails, exit with an error.

Mon Apr 17 14:59:36 MET DST 2000  Jan Hubicka  <jh@suse.cz>

        * cse.c (struct check_depdendence_data): New.
        (check_dependence): New function.
        (invalidate): Use check_depdenence.

2000-04-16  Mark Mitchell  <mark@codesourcery.com>

        * dwarf2out.c (DWARF_CIE_DATA_ALIGNMENT): Adjust, now that
        UNITS_PER_WORD is unsigned.

        * tree.h (struct tree_common): Remove misleading comment.

2000-04-16  Dave Pitts  <dpitts@cozx.com>

        * Makefile.in ($(srcdir)/c-parse.y: c-parse.in): Enclose the whole
        message in quotes. Otherwise, IBM's make program treats the '#' as the
        start of a comment and ignores the remainder of the line.

        * c-lex.c (yylex): Change for EBCDIC, lower case characters preceed
        upper case.
        * cccp.c (initialize_char_syntax): Allow for holes in EBCDIC.
        * cexp.y (initialize_random_junk): Likewise.
        * cppfiles.c (find_include_file): Cast alloca return value.
        * cppinit.c (initialize_standard_includes): Likewise.
        * cpplib.c (cpp_define, cpp_undef): Likewise.
        * defaults.h (ASM_OUTPUT_ASCII): Use ISPRINT.
        * final.c (output_asm_insn): Allow for holes in EBCDIC.
        * fold-const.c (CHARMASK): New.
        (real_hex_to_f): Use it.
        * real.c (CHARMASK): New.
        (etoasc, asctoeg): Use it.
        (asctoeg): EBCDIC lower case characters preceed upper case.

        * i370.c (mvs_add_label): Change spacing for coding conventions.
        * i370.h (ASM_OUTPUT_CASE_LABEL): Change to the data CSECT for the
        outputing case vectors.
        (ASM_OUTPUT_CASE_END): New, put assembler back into code CSECT.
        (ASM_OUTPUT_ADDR_VEC_ELT, ASM_OUTPUT_ADDR_DIFF_ELT): Remove page check,
        since vector in in the data CSECT.
        (ASM_OUTPUT_REG_POP, ASM_OUTPUT_REG_PUSH): Restore to correct operation.
        * i370.md (Many patterns): Put the length in the XL directives.
        (movdi): Put back STM and MVC in definition.
        (floatsidf2): Correct TARGET_ELF_ABI pattern and add back the LE370
        pattern using the TCA.
        * oe.h (CPP_SPEC): Added to allow trigraphs.
        * xm-oe.h (HOST_BITS_PER_LONGLONG): Change to 32. IBM's compiler does
        not support the "long long" type.

2000-04-16  Mark Mitchell  <mark@codesourcery.com>

        * config/mips/mips-protos.h (mips_legitimate_address_p): New
        function.
        (mips_reg_mode_ok_for_base_p): Likewise.
        * config/mips/mips.h (REG_OK_STRICT_P): Don't define.
        (REG_OK_FOR_INDEX_P): Define unconditionally.
        (REG_MODE_OK_FOR_BASE_P): Use mips_reg_mode_ok_for_base_p.
        (GO_IF_LEGITIMATE_ADDRESS): Use mips_legitimate_address_p.
        * config/mips/mips.c (mips16_simple_memory_operand): Adjust now
        that GET_MODE_SIZE is unsigned.
        (mips_reg_mode_ok_for_base_p): Define.
        (mips_legitimate_address_p): Likewise.  Adjust now
        that GET_MODE_SIZE is unsigned.
        (block_move_loop): Make the number of bytes unsigned.
        (expand_block_move): Likewise.
        (function_arg): Make the loop counter unsigned to match the
        boundary condition.

2000-04-16  Richard Henderson  <rth@cygnus.com>

        * rtl.h (enum insn_note): New enumeration.  Subsume
        NOTE_INSN_DELETED and friends.
        (GET_NOTE_INSN_NAME): Adjust index by NOTE_INSN_BIAS.
        * rtl.c (note_insn_name): Tweak string order.

2000-04-15  Zack Weinberg  <zack@wolery.cumb.org>

        * cpplex.c (_cpp_read_and_prescan): Enlarge len by setting it
        to offset * 2.

        * cpplex.c (output_line_command): Remove debugging prints.
        (cpp_output_tokens): Don't write out a zero-length buffer or
        try to see if it has a newline in it.
        (_cpp_expand_to_buffer): Copy the source buffer before pushing.
        (_cpp_read_and_prescan): Move shift-down of pushback bytes to
        the end of the loop.  Use memmove.  Don't read past the end of
        the buffer.  Remove trailing newlines from error messages.

2004-04-16  Neil Booth  <NeilB@earthling.net>

        * cpphash.h (SYNTAX_INCLUDE, SYNTAX_ASSERT, directive_handler): new.
        * cpplib.c: Add new syntax flags to directive table, and
        supporting macros.

2000-04-15  Ulrich Drepper  <drepper@redhat.com>

        * i386.c (ix86_expand_epilogue): Yes, the x86 can pop 64k at once
        using ret $N.

2000-04-15  David Edelsohn  <edelsohn@gnu.org>

        * toplev.c (display_help): Prefix "f" to "sched-verbose=".
        * haifa-sched.c: Update -fsched-verbose comments to use "=".

Sat Apr 15 10:59:19 2000  Richard Kenner  <kenner@vlsi1.ultra.nyu.edu>

        * Makefile.in (ggc-page.o): Now includes toplev.h.
        * ggc-page.c (toplev.h): Now included.
        (gc_time): Remove declaration.
        (ggc_collect): TIME now long.
        * toplev.c (parse_time, varasm_time, gc_time): Still global; all
        others static.
        * toplev.h (gc_time, parse_time, gc_time): New declarations.

        * toplev.c: Make *_time variable long to reduce chance of overflow.
        (TIMEVAR): Likewise for `otime'.
        (print_time): Arg is now long; compute percentage in FP and round.
        * toplev.h (print_time): Arg is long.

        * tree.c: Minor whitespace changes.

        * configure.in (alpha*-*-*): Add config/alpha/t-alpha.
        * configure: Rebuilt.
        * libgcc2.c (__fixunstfDI): Renamed from __fixunstfdi.
        (__fixunsxfDI): Renamed from __fixunsxfdi.
        (__fixunsdfDI): Renamed from __fixunsdfdi.
        (__fixunssfDI): Renamed from __fixunssfdi.
        (__floatdisf): Use proper type in REP_BIT macro.
        (__fixunsxfSI): Renamed from __fixunsxfsi.
        (__fixunsdfSI): Renamed from __fixunsdfsi.
        (__fixunssfSI): Renamed from __fixunssfsi.
        * libgcc2.h: Add cases for MIN_UNITS_PER_WORD > 4.
        Change location of macros and upper-case some names as above.
        * longlong.h ([alpha]): Use PARAMS, not __P in decl of __udiv__qrnnd.
        * config/alpha/t-alpha, config/alpha/qrnnd.asm: New files.

        * varasm.c (assemble_variable): Add cast to remove warning.
        (immed_real_const_1): Only use CONST[01]_RTX if not in nested function.

        * flow.c (count_basic_blocks, find_basic_blocks_1): Remove last change.
        * optabs.c (emit_libcall_block): If have REG_EH_REGION, update
        region number to -1.

2000-04-15  Richard Earnshaw (rearnsah@arm.com)

        * emit-rtl.c (unshare_all_rtl_again): Unmark everything, then
        call unshare_all_rtl.

        * arm.md (movhi): REGNO_POINTER_ALIGN is now bits.

Fri Apr 14 16:58:45 2000  Jim Wilson  <wilson@cygnus.com>

        * config/ia64/lib1funcs.asm (__divdi3, __moddi3, __udivdi3, __umoddi3):
        Use .s1 not .s0 for all FP instructions.

2000-04-14  Zack Weinberg  <zack@wolery.cumb.org>

        * cpplex.c (cpp_output_tokens, cpp_scan_buffer_nooutput): New public
        interfaces.
        (safe_fwrite, output_line_command): New static functions.
        (cpp_expand_to_buffer): Now private to cpplib.
        (cpp_scan_buffer): Take a printer.

        * cpphash.h: Update prototypes.
        * cpplib.h: Update prototypes.
        (cpp_printer): New.
        (cpp_buffer): Remove last_nominal_fname.
        (cpp_reader): Remove lineno.

        * cppmain.c: Use a cpp_printer.
        * fix-header.c: No need to inhibit line commands.  Call
        cpp_start_read with no printer.

        * cpperror.c (cpp_notice_from_errno): Provide default name.
        * cppfiles.c (make_IHASH, _cpp_fake_ihash): New functions.
        (find_include_file, cpp_read_file): Use make_IHASH.
        (file_cleanup): Set control_macro and clear
        input_stack_listing_current here.
        (_cpp_execute_include): Don't output entering-file marker.
        * cpphash.c (special_symbol): Look for the line number in the
        buffer, not the reader.
        (_cpp_macroexpand): No need to disable line commands.
        (_cpp_dump_definition): No need to generate line commands.
        (dump_hash_helper): Remove excess newline from output.
        * cppinit.c (dump_special_to_buffer): No need to generate line
        commands.
        (cpp_printer_init): New.
        (cpp_start_read): Take a printer, and start it up if it's not
        NULL.  No need to generate line commands.
        (cpp_finish): Expect no buffers stacked at all.  Take a
        printer argument, and flush the output buffer if it's not
        NULL.
        * cpplex.c (_cpp_lex_token): Return EOF if there's no buffer.
        Don't put two hashes at the beginning of an assertion.
        (cpp_get_token): Don't increment pfile->lineno or emit line
        commands here.  Return EOF if there's no buffer when we get
        EOF.
        * cpplib.c (do_define, skip_if_group):
        No need to disable line commands.
        (_cpp_output_line_command): Delete function.
        (do_line): Don't emit line commands here, but set things up so
        they will be emitted if necessary.  Use _cpp_fake_ihash to
        make unique nominal_fnames if necessary.
        (do_elif, do_else, _cpp_handle_eof): Call cpp_error_with_line
        with 0 for column, not -1.
        (_cpp_handle_eof): Don't set the control macro here.  Don't
        clear input_stack_listing_current here.  Don't emit line
        commands.

2000-04-14  Geoff Keating  <geoffk@cygnus.com>

        * config/rs6000/sysv4.h (LINK_START_SOLARIS_SPEC): Define to empty
        always, use the default SVR4 start address.

        * config/rs6000/linux.h (LINK_SPEC): Don't define.
        (LINK_SHLIB_SPEC): Define.
        (LINK_START_DEFAULT_SPEC): Define.
        (LINK_OS_DEFAULT_SPEC): Define.

        * config/rs6000/sysv4.h (ENDFILE_SPEC): Use the %(endfile_*) macros.

        * config/rs6000/eabi.asm (__eabi): Call __init rather than
        __do_global_ctors to handle constructors.
        * config/rs6000/sysv4.h (STARTFILE_ADS_SPEC): Use crtbegin.
        (STARTFILE_YELLOWKNIFE_SPEC): Likewise.
        (STARTFILE_MVME_SPEC): Likewise.
        (STARTFILE_SIM_SPEC): Likewise.
        (ENDFILE_ADS_SPEC): Use crtend.
        (ENDFILE_YELLOWKNIFE_SPEC): Likewise.
        (ENDFILE_MVME_SPEC): Likewise.
        (ENDFILE_SIM_SPEC): Likewise.
        (STARTFILE_SOLARIS_SPEC): Use crtbegin/crtbeginS.
        (ENDFILE_SOLARIS_SPEC): Use crtend/crtendS.
        (STARTFILE_LINUX_SPEC): Use crtbeginS for shared objects.
        (ENDFILE_LINUX_SPEC): Use crtendS for shared objects.
        * config/rs6000/t-ppccomm (LIB2FUNCS_EXTRA): Don't build eabi-ctors.o.
        (EXTRA_MULTILIB_PARTS): Build crtbeginS/crtendS.
        (CRTSTUFF_T_CFLAGS_S): Define.
        * config/rs6000/eabi-ctors.c: Delete.

        * config/rs6000/eabi-ci.asm (__init): Align stack to 16-byte
        boundary.
        (__fini): Likewise.
        * config/rs6000/eabi-cn.asm (__init): Allow for 16-byte stack frame.
        boundary.
        (__fini): Likewise.

Fri Apr 14 16:09:02 2000  Jim Wilson  <wilson@cygnus.com>

        * combine.c (force_to_mode, case LSHIFTRT): Check that shift shift
        plus mask size is smaller or equal to the mode size.

Fri Apr 14 18:07:30 2000  Richard Kenner  <kenner@vlsi1.ultra.nyu.edu>

        * print-rtl.c (print_rtx, case NOTE): Don't blow up if NOTE_BASIC_BLOCK
        not yet set.

        * expr.c (reload.h): Now included.
        (emit_block_move): Set volatile_ok when checking for movstr.
        (emit_move_1): Check for replacements in addresses in multi-word case.
        * Makefile.in (expr.o): Now includes reload.h.

        * flow.c (count_basic_blocks): Remove unused var PREV_CALL.
        Never have a LIBCALL end a basic block.
        (find_basic_blocks_1): Likewise.
        Reorganize CALL_INSN cases.

        * sbitmap.h (EXECUTE_IF_SET_IN_SBITMAP): Revert last change.

Fri Apr 14 10:54:22 2000  Jim Wilson  <wilson@cygnus.com>

        * config/ia64/lib1funcs.asm (__ia64_nonlocal_goto): Drop obsolete
        completers from mov.ret instruction.

2000-04-14  Richard Henderson  <rth@cygnus.com>

        * fold-const.c (extract_muldiv): Don't distribute and widen
        multiply across plus for non-sizetype unsigned types.

2000-04-14  Richard Henderson  <rth@cygnus.com>

        * flow.c (find_auto_inc): Don't autoinc eliminable registers.
        If the original source is dead in the incr insn, it's dead now.

Fri Apr 14 07:40:32 2000  Richard Kenner  <kenner@vlsi1.ultra.nyu.edu>

        * stor-layout.c (layout_decl): Properly compare KNOWN_ALIGN to
        see if DECL_BIT_FIELD needs to still be set.

        * tree.h (struct tree_type): Make PRECISION 9 bits and MODE 7.

        * dbxout.c (dbxout_type, case INTEGER_TYPE): Don't call
        print_int_cst_octal with something that's not an INTEGER_CST.

        * config/alpha/alpha.c (alpha_emit_floatuns): Ensure we pass a REG
        and not a SUBREG to a FLOAT rtl.

Thu Apr 13 19:39:56 2000  Clinton Popetz  <cpopetz@cygnus.com>

        * emit-rtl.c (try_split): Avoid infinite loop if the split
        results in a sequence that contains the original insn.

2000-04-13  Andreas Jaeger  <aj@suse.de>

        * config/mips/mips.c (expand_block_move): Pass alignment
        argument to move_by_pieces in bits, not bytes.

        * config/mips/linux.h (CPP_PREDEFINES): Also define __PIC__ and
        __pic__ for little endian.

2000-04-13  Andreas Jaeger  <aj@suse.de>

        * config/i386/i386-protos.h: Add prototype for
        uno_comparison_operator.

Thu Apr 13 15:55:08 MET DST 2000  Jan Hubicka  <jh@suse.cz>

        * alias.c (nonlocal_reference_p): Take care of CALL_INSNS's fusage.
        * calls.c (ECF_PURE): New flag.
        (emit_call_1): Handle ECF_PURE calls.
        (initialize_argument_information): Unset ECF_PURE flag too.
        (precompute_arguments): Precompute for ECF_PURE too.
        (expand_call): Handle ECF_PURE calls too.
        (emit_library_call_value_1): Rename no_queue argument to fn_type,
        accept value of 2 as pure function.
        (emit_library_call_value, emit_library_call): Rename no_queue argument
        to fn_type.
        * optabs.c (prepare_cmp_insn): Pass fn_type 2 to memcmp call.

        * tree.h (DECL_IS_PURE): New macro.
        (struct tree_decl): Add pure_flag.
        * c-common.c (enum attrs): Add attribute "pure".
        (init_attributes): Initialize attribute "pure"
        (decl_attributes): Handle attribute "pure".
        * extend.texi (Attribute "pure"): Document.
        * calls.c (expand_call): Add (mem:BLK (scratch)) to "equal from"
        in pure function.
        (flags_from_decl_or_type): Support attribute "pure".

2000-04-13  Jason Merrill  <jason@casey.cygnus.com>

        * cpplex.c (_cpp_lex_token): Handle digraphs.  Don't null-terminate
        the token except for numbers and identifiers.

Thu Apr 13 00:09:16 EDT 2000  John Wehle  (john@feith.com)

        * i386.c (ix86_expand_binary_operator,
        ix86_expand_unary_operator): Check no_new_pseudos
        instead of reload_in_progress and reload_completed.
        (ix86_split_ashldi, ix86_split_ashrdi,
        ix86_split_lshrdi): Check no_new_pseudos instead
        of reload_completed.

2000-04-12  Jeffrey A Law  (law@cygnus.com)

        * function.c (purge_addressof): Unshare any shared rtl created by
        purge_addressof and its children.

2000-04-12  Mark Mitchell  <mark@codesourcery.com>

        * function.c (aggregate_value_p): VOID_TYPE nodes are never
        aggregates.

2000-04-05  Andreas Jaeger  <aj@suse.de>

        * config/mips/linux.h (SUBTARGET_ASM_SPEC): Use proper flags if
        not compiling PIC code, add flags for mabi=64.
        (SUBTARGET_CPP_SIZE_SPEC): New.
        (SUBTARGET_CPP_SPEC): New.
        (CPP_PREDEFINES): Define __PIC__ and __pic__.  PIC code is default
        for MIPS/Linux and lots of code needs these defines.

Wed Apr 12 22:44:11 2000  Hans-Peter Nilsson  <hp@axis.com>

        * reorg.c (fill_slots_from_thread): Check side_effects_p when
        trying the "opposite arithmetic" approach.

Wed Apr 12 20:51:20 2000  J"orn Rennecke <amylaar@cygnus.co.uk>

        * sh.h (STRUCT_VALUE): Just 0 for TARGET_HITACHI.
        (struct sh_args): Add new field force_mem.
        (INIT_CUMULATIVE_ARGS): Initialize it.
        (FUNCTION_ARG, FUNCTION_ARG_ADVANCE): Act on it.

Wed Apr 12 17:20:41 MET DST 2000  Jan Hubicka  <jh@suse.cz>

        * calls.c (expand_call): Do not reverse args in "equal from" field.
        (emit_library_call_value_1): Emit_libcall_block for const and pure
        function.

Wed Apr 12 16:00:25 2000  J"orn Rennecke <amylaar@cygnus.co.uk>

        * reload1.c (reload_combine): Don't enable optimization for fixed
        registers when encountering a BARRIER.

Wed Apr 12 15:54:11 MET DST 2000  Jan Hubicka  <jh@suse.cz>

        * builtins.c (expand_builtin_memcmp): Do expansion even with
        !HAVE_cmpstrsi, do libcall when gen_strcmpsi fails.

        * calls.c (expand_call): Do NO_DEFER_POP unconditionally once
        stack is propertly aligned; add sanity checking for aligned
        stack pointer.
        (expand_library_call_value_1): Add sanity checking for aligned
        stack pointer.

Wed Apr 12 07:51:54 2000  Catherine Moore  <clm@cygnus.com>

        * calls.c (emit_library_call_value_1): Change 3rd arg to
        locate_and_pad_parm to disregard the setting of partial.

Wed Apr 12 08:47:38 2000  Richard Kenner  <kenner@vlsi1.ultra.nyu.edu>

        * tree.c (unsave_expr_now_r, unsafe_for_reeval): Properly do TREE_LIST.

        * print-rtl.c (print_rtx): For CALL_PLACEHOLDER, output the
        CALL_INSN from the normal case.

Fri Apr  7 12:23:04 MET DST 2000  Jan Hubicka  <jh@suse.cz>

        * i386.c (x86_sub_esp_4, x86_sub_esp_8, x86_add_esp_4, x86_add_esp_8):
        New global variables.
        (ix86_emit_epilogue_adjustment): Do not attempt to use pop for the
        adjustment.
        * i386.h (x86_sub_esp_4, x86_sub_esp_8, x86_add_esp_4, x86_add_esp_8):
        Declare,
        (TARGET_SUB_ESP_4, TARGET_SUB_ESP_8, TARGET_ADD_ESP_4,
         TARGET_ADD_ESP_8): New macros.
        * i386.md: Add peep2s to convert esp adjustments to push and pop
        instructions.
        (pushsi_prologue, popsi_epilogue): New patterns.

2000-04-12  Jakub Jelinek  <jakub@redhat.com>

        * real.c (toe64): Remove stale #endif from the last change.

2000-04-12  Stephen L Moshier  <moshier@mediaone.net>

        * real.h (MAX_LONG_DOUBLE_TYPE_SIZE): Comment.
        * real.c (toe64): Revert previous change.

2000-04-12  Jakub Jelinek  <jakub@redhat.com>

        * objc/objc-act.c: Include ggc.h.
        (objc_tree_index, objc_global_trees): Convert most of the
        static tree variables into a static array with previous names
        as defines.
        (objc_ellipsis_node): New variable.
        (lang_init): Call objc_act_parse_init and c_parse_init.
        Create objc_ellipsis_node.
        (build_selector_translation_table): Use objc_ellipsis_node instead
        of (tree)1.
        (hack_method_prototype): Likewise.
        (get_arg_type_list): Likewise.
        (start_method_def): Likewise.
        (continue_method_def): Likewise.
        (gen_method_decl): Likewise.
        (ggc_mark_imp_list): New function.
        (ggc_mark_hash_table): New function.
        (objc_act_parse_init): New function.
        * objc/objc-act.h (objc_ellipsis_node): Add extern variable.
        * c-parse.in (c_parse_init): For objc add roots of objc specific
        local tree variables.
        * objc/objc-parse.y: Rebuilt.
        * objc/objc-parse.c: Rebuilt.
        (opt_parm_list): Use objc_ellipsis_node instead of (tree)1.

Wed Apr 12 01:00:44 EDT 2000  John Wehle  (john@feith.com)

        * cse.c (delete_trivially_dead_insns): Also delete insns
        that copy a register to itself where the destination is
        a strict_low_part.

2000-04-11  Richard Henderson  <rth@cygnus.com>

        * flow.c (struct propagate_block_info): Add new_dead, new_live.
        (propagate_block): Initialize them.  Use them in parallel instead
        of one tmp variable, ie revert much of the 0408 and 0407 functional
        changes, but keep the structural changes.
        (mark_set_regs): Take new_dead from propagate_block_info instead.
        (mark_set_1, mark_set_reg): Likewise.
        (mark_used_regs): Likewise with new_live.
        (mark_used_reg): Likewise.  Revert 0408 change.

2000-04-11  Nick Clifton  <nickc@cygnus.com>

        * config/arm/arm.h: (INCOMING_RETURN_ADDR_RTX): Remove Dwarf2
        restriction.
        (DWARF_FRAME_RETURN_COLUMN): Remove Dwarf2 restriction.

2000-04-11  Alexandre Oliva  <oliva@lsd.ic.unicamp.br>

        * config/elfos.h (SELECT_SECTION): Decide whether to use a data or
        const section to output a CONSTRUCTOR based on the same conditions
        used for VAR_DECLs.

Tue Apr 11 09:55:59 2000  Jeffrey A Law  (law@cygnus.com)

        * pa/long-double.h (FIX_TRUNCTFSI2_LIBCALL): Tweak for PA64.
        * pa/pa-protos.h (output_call): Add additional argument indicating
        if the call is a sibling/tail call.
        (compute_zdepdi_operands, output_64bit_and): Prototype new functions.
        (compute_64bit_ior, cmpib_comparison_operator): Likewise.
        (function_arg, function_arg_partial_nregs): Likewise
        * pa/pa.c (override_options): Always set flag_pic for TARGET_64BIT.
        (emit_move_sequence): Zero extend certain constants as needed
        for TARGET_64BIT.
        (compute_zdepdi_operands, output_64bit_and): New functions.
        (output_64bit_ior, function_arg): Likewise.
        (cmpib_comparison_operator, function_arg_partial_nregs): Likewise.
        (compute_frame_size, hppa_expand_prologue): Handle TARGET_64BIT.
        (hppa_expand_epilogue, return_addr_rtx, hppa_va_arg): Likewise.
        (hppa_builtin_saveregs, output_cbranch, output_bb): Likewise.
        (output_bvb): Likewise.
        (output_millicode_call): Return pointer is in %r2 for TARGET_64BIT.
        (output_call): New argument 'sibcall'.  Generate sibcall sequences
        as needed.
        (print_operand); Handle cases 'Q', 'p', and 'z' for TARGET_64BIT.  For
        (ouput_arg_descriptor): Do not emit argument descriptors for
        TARGET_64BIT.
        * pa/pa.h (TARGET_PA_11, TARGET_PA_20): Only define if not already
        defined.
        (TARGET_64BIT, PROMOTE_FUNCTION_RETURN): Define.
        (FUNCTION_OK_FOR_SIBALL): Define.
        (CPP_PA10_SPEC, CPP_PA11_SPEC, CPP_PA20_SPEC): Define.
        (CPP_CPU_DEFAULT_SPEC, SUBTARGET_EXTRA_SPECS, EXTRA_SPECS): Likewise.
        (CPP_SPEC): Use new spec infrastructure.
        (BITS_PER_WORD, UNITS_PER_WORD): Handle TARGET_64BIT.
        (STACK_BOUNDARY, FUNCTION_BOUNDARY, PIC_OFFSET_TABLE_REGNUM): Likewise.
        (RETURN_IN_MEMORY, EXTRA_CONSTRAINT, FIRST_PARM_OFFSET): Likewise.
        (REG_PARM_STACK_SPACE, STACK_POINTER_OFFSET): Likewise.
        (STACK_DYNAMIC_OFFSET, FUNCTION_VALUE): Likewise.
        (FUNCTION_ARG_PASS_BY_REFERENCE, FUNCTION_ARG_CALLEE_COPIES): Likewise.
        (TRAMPOLINE_TEMPLATE, TRAMPOLINE_SIZE): Likewise.
        (INITIALIZE_TRAMPOLINE, LEGITIMATE_CONSTANT_P): Likewise.
        (CONST_OK_FOR_LETTER_P, MOVE_RATIO): Likewise.
        (FUNCTION_ARG); Call out to C code.
        (FUNCTION_ARG_PARTIAL_NREGS): Likewise.
        (MAX_BITS_PER_WORD, MAX_LONG_TYPE_SIZE, MAX_WCHAR_TYPE_SIZE): Define.
        (MIN_UNITS_PER_WORD): Likewise.
        * pa/pa.md (cmpdi): New expander.
        (scc patterns, movstrsi): Not available for TARGET_64BIT.
        (64bit conditional arithmetic): New patterns.
        (absdi2, smindi3, umindi3, smaxdi3, umaxdi3): New patterns.
        (movsicc): Not available if modes on all the operands to not match.
        (movdicc): New expander and associated patterns.
        (64bit branches): New patterns.
        (pre_load, post_store): Generate appropriate code for TARGET_64BIT.
        (pre_ldd, post_std): New patterns.
        (64bit addil, load low part): New patterns.
        (special movsf constant): Not available for TARGET_64BIT.
        (movsf, movdf expanders): Force constants into memory.
        (32bit movdf/movdi patterns): Disable for TARGET_64BIT.
        (64bit movdf/movdi patterns): New patterns.
        (zero_extendqidi2, zero_extendhidi2, zero_extendsidi2): New patterns
        for TARGET_64BIT.
        (extendqidi2, extendhidi2, extendsidi2): Similarly.
        (adddi3 expander): Allow "arith_operand" for second input.
        (32bit adddi3, subdi3, uaddcm): Disable for TARGET_64BIT.
        (64bit adddi3, subsi3, uaddcm): New patterns for TARGET_64BIT.
        (mulsi3 expander): Revamp slightly so it supports TARGET_64BIT too.
        (muldi3): New expander for TARGET_64BIT.
        (divsi3, udivsi3, modsi3, umodsi3): Fourth operand must be (reg:SI 2)
        for TARGET_64BIT.
        (32bit anddi3, iordi3, xordi3, andcm, negdi2, uaddcm): Disable
        patterns for TARGET_64BIT.
        (64bit anddi3, iordi3, xordi3, andcm, negdi2, uaddcm, shadd): New
        patterns for TARGET_64BIT.
        (64bit bit insertion/extractions): New patterns for TARGET_64BIT.
        (64bit shifts/rotates): New patterns/expanders for TARGET_64BIT.
        (sibcall_epilogue): New expander.
        (casesi): Tweak for TARGET_64BIT.
        (call expanders): Set & use the outgoing argument pointer.  Use the
        64bit call patterns as needed. Add additional arg to output_call.
        (call_internal_reg_64bit, call_value_internal_reg_64bit): New pattern.
        (sibcall, sibcall_internal_symref): New expanders.
        (sibcall_value, sibcall_value_internal_symref
        (interspace_jump): Turn into an expander + matching patterns.
        (canonicalize_funcptr_for_compare): Not needed for TARGET_64BIT.
        * pa/pa64-regs.h: Eliminate trigraph sequences.
        * pa/pa64-start.h (TARGET_PA_20): Fix typo.

2000-04-11  Zack Weinberg  <zack@wolery.cumb.org>

        * cppexp.c, cpphash.c, cpphash.h, cpplex.c, cpplib.c,
        cpplib.h, cppmain.c, fix-header.c, scan-decls.c: Replace
        cpp_token with cpp_ttype everywhere.
        * cpperror.c, cpphash.c, cpplex.c, cpplib.c, scan-decls.c:
        Replace cpp_buf_line_and_col with CPP_BUF_LINE and/or
        CPP_BUF_COL.  Line and column numbers are unsigned int, not
        long.
        * cpplex.c (cpp_buf_line_and_col): Delete.
        * cpplib.h (struct cpp_buffer, struct cpp_reader): Change
        'long lineno' to 'unsigned int lineno'.
        (CPP_BUF_LINE, CPP_BUF_COL): New macros.

2000-04-11  Martin v. Löwis  <loewis@informatik.hu-berlin.de>

        * extend.texi: ISO C99 is not a draft anymore.
        * invoke.texi: ISO C++ is not a draft anymore.
        * cpp.texi: __cplusplus is required by the ISO standard.

        * extend.texi (-fthis-is-variable): Undocument.
        * flags.h (warn_template_debugging): Remove declaration.
        * gcc.1 (-fall-virtual, -fenum-int-equiv, -fthis-is-variable,
        -Wenum-clash, -Wtemplate-debugging): Undocument.

2000-04-10  Nick Clifton  <nickc@cygnus.com>

        * config/arm/arm.h (HOST_INT): New macro: Declare a HOST_WIDE_INT
        integer.
        (HOST_UINT): New macro: Declare an unsigned HOST_WIDE_INT
        integer.
        (ARM_SIGN_EXTEND): Use HOST_UINT.
        (STRIP_NAME_ENCODING): Prevent warnings about redefinitions.
        (ASM_OUTPUT_LABELREF): Prevent warnings about redefinitions.
        (INCOMING_RETURN_ADDR_RTX): Only define if Dwarf2 is supported.
        (DWARF_FRAME_RETURN_COLUMN): Only define if Dwarf2 is supported.

        * config/arm/arm.c: (const_ok_for_arm): Use HOST_UINT.
        (arm_gen_constant): Use HOST_UINT.
        (arm_canonicalize_constant): Use HOST_UINT.
        (arm_reload_in_hi): Use HOST_UINT.
        (arm_reload_out_hi): Use HOST_UINT.
        (output_multi_immediate): Use HOST_UINT.
        (int_log2): Use HOST_UINT.
        (arm_poke_function_name): Use HOST_UINT.
        (arm_output_epilogue): Use arm_volatile_func().
        (output_thumb_prologue): Use arm_strip_name_encoding().

Mon Apr 10 15:40:59 2000  Richard Kenner  <kenner@vlsi1.ultra.nyu.edu>

        * sbitmap.c (sbitmap_a_subset_b_p): Rework loop to avoid potential
        of sequence point problems.

2000-04-10  Nathan Sidwell  <nathan@codesourcery.com>

        * rtl.def (ASHIFT, ROTATE, ASHIFTRT, LSHIFTRT, ROTATERT):
        Recomment.
        * tree.def (LSHIFT_EXPR, RSHIFT_EXPR): Recomment.

Mon Apr 10 07:21:13 2000  Richard Kenner  <kenner@vlsi1.ultra.nyu.edu>

        * sbitmap.h: Whitespace changes and use upper-case macro args.
        (struct simple_bitmap_def): All sizes now unsigned.
        (EXECUTE_IF_SET_IN_SBITMAP): Internal vars now _X instead of X_.
        * sbitmap.c (sbitmap_alloc): N_ELMS now unsigned; also local vars.
        (sbitmap_vector_alloc): Parms and local vars now unsigned.
        (sbitmap_zero): Cast bzero arg to PTR.
        (sbitmap_vector_zero, sbitmap_vector_one): Parm and Local var unsigned.
        (sbitmap_union_of_diffs): Change loop index to unsigned and rework
        loop to make structure clearer.
        (sbitmap_not, sbitmap_difference, sbitmap_a_and_b): Likewise.
        (sbitmap_a_or_b, sbitmap_a_subset_b_p, sbitmap_a_or_b_and_c): Likewise.
        (sbitmap_a_and_b_or_c): Likewise.
        (sbitmap_intersection_of_succs): Minor cleanups.
        (sbitmap_intersection_of_preds, sbitmap_union_of_succs): Likewise.
        (sbitmap_union_of_preds): Likewise.
        (sbitmap_first_set_bit, dump_sbitmap): Local variables now unsigned.
        (debug_sbitmap): New function.

        * c-convert.c (convert): Handle REFERENCE_TYPE like POINTER_TYPE.
        * c-typeck.c (convert_for_assignment): Likewise.

        * expmed.c (init_expmed): Don't free objects we make.
        * emit-rtl.c (gen_rtx_CONST_INT, init_emit_once): Minor cleanups.

        * expr.c (get_inner_reference): Correct some WITH_RECORD_EXPR cases.
        (expand_expr, case CONVERT_EXPR): Pass proper alignment to store_field.

        * gcse.c (expr_hash_table_size): Now unsigned.
        (compute_ae_gen): Local variable `i' now unsigned.
        (compute_ae_kill, pre_insert_copies, pre_delete, pre_gcse): Likewise.
        (compute_transout, hoist_code): Likewise.
        (compute_local_properties): Likewise, also hash_table_size.
        (alloc_expr_hash_table): N_INSNS now unsigned.
        (delete_null_pointer_checks): Mark arg F as unused.

        * regrename.c: Minor cleanups, including chang some variables
        to unsigned int.

2000-04-10  Neil Booth  <NeilB@earthling.net>

        * cpplex.c (skip_block_comment): Use pointer arithmetic rather
        than GETC ().
        * cpphash.h: (CPP_BUMP_BUFFER_LINE_CUR, CPP_BUMP_LINE_CUR): New.

2000-04-10  Martin v. Löwis  <loewis@informatik.hu-berlin.de>

        * invoke.texi (-fno-gnu-keywords): Remove classof, headof,
        __classof__, and __headof__ from the list of gnu keywords.
        (-ansi): Remove -foperator-names from list of implied options.
        Do not call it ANSI C++.
        (-foperator-names): Document as -fno-operator-names.

2000-04-09  Zack Weinberg  <zack@wolery.cumb.org>

        * cpphash.c (timestamp): Delete.
        (del_HASHNODE): If type is T_MCONST, free value.cpval.
        (special_symbol): Remove unnecessary braces.  Remove
        T_VERSION.  Treat T_STDC like T_CONST unless
        STDC_0_IN_SYSTEM_HEADERS.  Render both __DATE__ and __TIME__
        when one is encountered, then convert them into T_MCONST
        nodes.
        * cppinit.c (builtin_array): version_string is T_MCONST.
        __STDC__ has a "1" in its cpval.  Don't have a terminator
        entry.  Clean up which entries are dumped.
        (initialize_builtins): Only __STDC__ gets the special
        -traditional treatment.  Count the length of builtin_array.
        Render version_string here.
        * cpphash.h: Remove T_VERSION.  Add T_MCONST.
        * cpplib.h (struct cpp_reader): Remove timebuf.

2000-04-09  Richard Henderson  <rth@cygnus.com>

        * genrecog.c (pred): Update comparison_operator for the unordered
        operators.

        * config/i386/i386.c (no_comparison_operator): Disallow unordered
        operators.
        (fcmov_comparison_operator): Allow UNORDERED/ORDERED.
        (uno_comparison_operator): New.
        (put_condition_code): Handle UNORDERED/ORDERED.
        (unsigned_comparison): Likewise.
        (ix86_fp_compare_mode): Broken out of ix86_expand_fp_compare.
        (ix86_use_fcomi_compare, ix86_prepare_fp_compare_args): Likewise.
        (ix86_expand_fp_compare): Use them.  Take scratch as argument,
        update all callers.  Handle all 8 unordered operators.
        (ix86_expand_setcc): Lose the unordered argument, update all callers.
        (ix86_expand_branch): Likewise.  Don't fully expand fp branches.
        * config/i386/i386.h (PREDICATE_CODES): Update.
        * config/i386/i386-protos.h (ix86_expand_fp_compare): Declare.
        (ix86_expand_branch, ix86_expand_setcc): Update.
        * config/i386/i386.md (sunordered, sordered): New.
        (suneq, sunge, sungt, sunle, sunlt, sltgt): New.
        (bunordered, bordered): New.
        (buneq, bunge, bungt, bunle, bunlt, bltgt): New.
        (*fp_jcc_1, *fp_jcc_2, *fp_jcc_3, *fp_jcc_4): New.
        (*fp_jcc_5, *fp_jcc_6, and splitters): New.

2000-04-09  Philip Blundell  <philb@gnu.org>

        * config/arm/arm.h (ARM_NAME_ENCODING_LENGTHS): Strip `*' too.

Sun Apr  9 15:16:14 EDT 2000  John Wehle  (john@feith.com)

        * i386.md (fix_truncsfhi2, fix_truncdfhi2,
        fix_truncxfhi2): New patterns.
        * i386.c (output_fix_trunc): Handle converting to HImode.

2000-04-08  Alex Samuel  <samuel@codesourcery.com>

        * ssa.c (convert_to_ssa): Eliminate dead code when calling
        life_analysis.
        (convert_from_ssa): Call compute_bb_for_insn before life_analysis.
        (for_each_successor_phi): Change parameter to basic_block.
        (coalesce_regs_in_successor_phi_nodes): Likewise.
        (coalesce_regs_in_copies): Likewise.
        (compute_coalesced_reg_partition): Use basic_block instead of index.
        * rtl.h (convert_to_ssa): Delete.
        (convert_from_ssa): Likewise.
        (successor_phi_fn): Likewise.
        (for_each_successor_phi): Likewise.
        (in_ssa_form): Likewise.
        * basic-block.h (convert_to_ssa): Moved from rtl.h.
        (convert_from_ssa): Likewise.
        (successor_phi_fn): Likewise.
        (in_ssa_form): Likewise.
        (for_each_successor_phi): Likewise.  Change parameter to basic_block.
        * flow.c (calculate_global_regs_live): Pass a basic_block to
        for_each_successor_phi.

2000-04-08  Richard Henderson  <rth@cygnus.com>

        * flow.c (mark_used_reg): Use reg_set_p to determine if a register
        was modified in the current insn.

2000-04-08  Richard Earnshaw (rearnsha@arm.com)

        * arm/thumb.md: Delete.
        * arm/thumb-protos.h: Delete.

2000-04-08  Richard Earnshaw (rearnsha@arm.com)

        Merge changes from merged-arm-thumb-backend-branch onto trunk.

        2000-04-08  Richard Earnshaw (rearnsha@arm.com)

        * Merge trunk code from tag merged-arm-thumb-backend-merge_20000408
        into branch.

        * arm.md (nop): Use the standard RTL expression.  Don't code as a
        define_expand.
        (*arm_nop, *thumb_nop): Delete.

        * arm.c (const_ok_for_arm): Don't use ANSI extensions for defining
        constants.  Use casts instead.
        (arm_gen_constant, arm_rtx_costs, arm_reload_in_hi, arm_reload_out_hi,
        output_multi_immediate, arm_poke_function_name): Likewise.
        * arm.h (ARM_LEGITIIMIZE_RELOAD_ADDRESS, ARM_SIGN_EXTEND,
        MASK_RETURN_ADDDR): Likewise.

        2000-03-31  Richard Earnshaw (rearnsha@arm.com)

        * Merge trunk code from tag merged-arm-thumb-backend-merge_20000325
        into branch.

        * arm.md (eh_epilogue): New function.
        * arm.h (struct machine_function): Move to here ...
        * arm.c: ... from here.
        (arm_output_epilogue): Support epilogues for __builtin_eh_return.
        (thumb_exit): Extra parameter eh_ofs.  All callers changed.
        Handle epilogues for __builtin_eh_return.  Make bit-fields unsigned.

        2000-03-30  Nick Clifton  <nickc@cygnus.com>

        * config/arm/semi.h (ASM_SPEC): Restore definition.
        (SUBTARGET_EXTRA_ASM_SPEC): Define if not already defined.

        * config/arm/elf.h (ASM_SPEC): Restore definition.
        (SUBTARGET_EXTRA_ASM_SPEC): Define if not already defined.

        * config/arm/arm.h (ASM_SPEC): Remove definition.
        (SUBTARGET_EXTRA_ASM_SPEC): Remove definition.

        2000-03-26  Bernd Schmidt <bernds@cygnus.co.uk>

        * config/arm/arm.c: Disable -fschedule-insns for Thumb.

        2000-03-24  Nick Clifton  <nickc@cygnus.com>

        Various formating tidyups, elimination of compile time
        warnings and synchronisation with internal sources:

        * config/arm/arm-protos.h (assemble_align): Add prototype.
        (gen_rotated_half_load): Rename to arm_gen_rotated_half_load.
        (gen_comapre_reg): Rename to arm_gen_compare_reg.
        (arm_return_addr_rtx): Rename to arm_return_addr.

        * config/arm/arm.c: Include except.h.
        Define shorter typenames for strict minipool_node and struct
        minipool_fix.
        (arm_return_in_memory): For WinCE return all structures <= 32 bits
        in memory.
        (gen_rotated_half_load): Rename to arm_gen_rotated_half_load.
        (gen_comapre_reg): Rename to arm_gen_compare_reg.

        * config/arm/arm.h (SUBTARGET_EXTRA_ASM_SPEC): Define if not
        already defined.
        (ASM_SPEC): Define if not already defined.
        (ASM_OUTPUT_DEF_FROM_DECLS): Define.

        * config/arm/arm.md: Rename references to gen_rotated_half_load to
        arm_gen_rotated_half_load, and references to gen_comapre_reg to
        arm_gen_compare_reg.
        (indirect_jump):  Only accept register operands.
        (load_indirect_jump): Keep this pattern since combine can generate
        it.

        * config/arm/coff.h: Include aout.h.
        (MULTILIB_DEFAULTS): Only define if not already defined.

        * config/arm/elf.h (ASM_OUTPUT_DEF_FROM_DECLS): Move definition
        into arm.h (so that COFF ports can support thumb based aliases).
        (ASM_SPEC): Move definition into arm.h

        * config/arm/linux-elf.h (SUBTARGET_EXTRA_ASM_SPEC): Remove
        redundant apcs spec.
        (ASM_SPEC): Move definition to arm.h

        * config/arm/semi.h (ASM_SPEC): Move definition to arm.h

        * config/arm/unknown-elf.h (ASM_OUTPUT_SECTION_NAME): Add support
        for entries in the .bss section

        2000-03-23  Nick Clifton  <nickc@cygnus.com>

        * config/arm/arm.h (THUMB_INITIAL_ELIMINATION_OFFSET): Pass 0
        to thumb_far_jump_used_p.

        * config/arm/arm-protos.h (thumb_far_jump_used_p): Take a
        single integer parameter.

        * config/arm/arm.c (struct machine_function): Add two new
        fields, 'far_jump_used' and 'arg_pointer_live'.
        (thumb_far_jump_used_p): Once the decision has been made that
        far jumps might be used, always return true.
        If being called from the initial elimination offset macro then
        do not bother to perform the test if the arg pointer is not
        being used.
        (thumb_unexpand_epilogue): Pass 1 to thumb_far_jump_used_p().
        (output_thumb_prologue): Pass 1 to thumb_far_jump_used_p().

        2000-03-23  Richard Earnshaw (rearnsha@arm.com)

        * arm.c (output_return_instruction): Handle more cases where we can
        return from a function with an ldr instruction.
        (arm_output_epilogue): Likewise.

        * arm.c (thumb_expand_prologue): Don't clobber the frame pointer
        if we need to push a large stack frame and there are no callee-saved
        registers.

        * arm.c (arm_debugger_arg_offset): An offset of 0 is also valid
        in ARM code if the frame pointer has been eliminated.

        * arm.md (epilogue, *epilogue_insns, consttable_*, align_4): Renumber
        unspec_volatile arguments to avoid duplicates.
        (consttable_1, consttable_2): Fixes for big-endian mode.

        * arm.md (all ARM-mode load insns): Add neg_pool_range attribute
        as appropriate.

        Re-write constant pool code.
        * arm.c (minipool_node, minipool_fix): New types.
        (minifix): Delete type.
        (arm_add_minipool_constant): Delete.
        (arm_compute_minipool_offsets, arm_find_barrier,
        arm_find_minipool_constant, fixup_compare, sort_fixups): Likewise.
        (get_jump_table_size): Now returns HOST_WIDE_INT.
        (move_minipool_fix_forward_ref, add_minipool_forward_ref): New
        functions.
        (move_minipool_fix_backward_ref, add_minipool_backward_ref): Likewise.
        (assign_minipool_offsets, arm_print_value): Likewise.
        (dump_minipool): Rewrite.
        (arm_barrier_cost): New function.
        (create_fix_barrier): New function.
        (push_minipool_barrier): New function.
        (push_minipool_fix): Record additional information about the fixup
        required.
        (note_invalid_constants): Remove push for (UNSPEC 3).  Don't
        check the mode of what needs fixing.
        (arm_reorg): Rewrite.

        2000-03-08  Nick Clifton  <nickc@cygnus.com>

        * config/arm/arm.md (indirect_jump): Force constant addresses into
        a register.

        2000-03-01  Bernd Schmidt <bernds@cygnus.co.uk>

        * config/arm/arm.md: Add splitter to turn SF moves into SI moves.

        2000-02-24  Nick Clifton  <nickc@cygnus.com>

        * config/arm/arm.c (thumb_expand_prologue): Make sure that stack
        adjust is word aligned.
        (thumb_expand_epilogue): Make sure that stack adjust is word
        aligned.

        * config/arm/elf.h (ASM_FILE_START): Fix type of version string.

        2000-02-24  Bernd Schmidt <bernds@cygnus.com>

        * config/arm/arm.h (THUMB_GO_IF_LEGITIMATE_ADDRESS): Allow frame
        pointer relative addresses.

        2000-02-10  Richard Earnshaw  <rearnsha@arm.com>

        * arm.c (find_barrier): Find the last barrier within the allowed
        range.

        2000-02-09  Nick Clifton  <nickc@cygnus.com>

        * config/arm/arm-protos.h: Replace PROTO with PARAMS.

        2000-02-09  Nick Clifton  <nickc@cygnus.com>

        * config/arm/linux-elf.h (FUNCTION_PROFILER): Rename to
        ARM_FUNCTION_PROFILER.

        * config/arm/netbsd.h (FUNCTION_PROFILER): Rename to
        ARM_FUNCTION_PROFILER.

        * config/arm/linux-oldld.h: Imported from mainline sources.

        2000-02-07  Nick Clifton  <nickc@cygnus.com>

        * config/arm/lib1funcs.asm: Merge in thumb functions from
        lib1thumb.asm.

        * config/arm/lib1thumb.asm: Delete.

        2000-02-04  Nick Clifton  <nickc@cygnus.com>

        * config/arm/arm.c: Sychronised with current Red hat local
        sources.
        * config/arm/arm.h: Ditto.
        * config/arm/arm-protos.h: Ditto.

        2000-02-02  Bernd Schmidt  <bernds@cygnus.co.uk>

        * arm.c (soft_df_operand): Reject SUBREGs containing a constant.

        * arm.c (arm_gen_movstrqi): Generate halfword stores rather than two
        byte stores.

        2000-02-02  Nick Clifton  <nickc@cygnus.com>

        * config/arm/thumb.c (thumb_exit): Additional fix for same bug.

        * config/arm/arm.md (epilogue): Fix rtl checking abort because
        (return) was emited using an emit_insn() call.

        2000-01-31  Nick Clifton  <nickc@cygnus.com>

        * config/arm/arm.c (output_thumb_prologue): Fix bug generating
        thumb stack frame.
        (thumb_exit): Move frame pointer back into hard frame pointer
        register if backtracing is being used.

        2000-01-13  Richard Earnshaw (rearnsha@arm.com)

        * Merge trunk code from tag merged-arm-thumb-backend-merge_20000113
        into branch.

        1999-12-15  Bernd Schmidt  <bernds@cygnus.co.uk>

        * config/arm/arm.md (neg_pool_offset): Provide default for new
        attribute.
        (arm_movsi_insn): Add neg_pool_offset attribute.
        * config/arm/arm.c (arm_find_barrier): Replace arg FIX with an
        rtx for the insn that starts the scan and an unsigned long for its
        address.  Add MIN_OFFSET and PINSERTED args.  All callers changed.
        Change scan to ignore insns before MIN_OFFSET.  Store size of inserted
        instructions in *PINSERTED.
        (struct minipool_fixup): Add MIN_ADDRESS elt.
        (sort_fixups): Compute it.
        (arm_reorg): Changes to support inserting pools before the insn to be
        fixed up.

        1999-12-08  Bernd Schmidt  <bernds@cygnus.co.uk>

        * config/arm/elf.h (MULTILIB_DEFAULTS): Add "marm".
        * config/arm/linux-elf.h (MULTILIB_DEFAULTS): Add "marm".
        * config/arm/coff.h (MULTILIB_DEFAULTS): Add "marm".

        Wed Nov  3 10:04:07 1999  Nick Clifton  <nickc@cygnus.com>

        * config/arm/semi.h (TARGET_VERSION): Do not define if already
        defined.
        (TARGET_DEFAULT): Do not define if already defined.

        Tue Nov  2 10:37:25 1999  Nick Clifton  <nickc@cygnus.com>

        * config/arm/arm.md (anddi3): Allow disjoint source operands.
        (iordi3): Allow disjoint source operands.
        (xordi3): Allow disjoint source operands.
        (negdi2): Permit construction for ARM and Thumb.
        (arm_negdi2): Renamed version of old negdi2 pattern.
        (thumb_negdi2): New pattern: Only permit non-overlapping
        source and destination.

        Fri Oct 29 18:52:38 1999  Nick Clifton  <nickc@cygnus.com>

        * config/arm/arm.c (thumb_expand_prologue): Emit a USE of the
        scratch low register so that it will not be deleted.

        Fri Oct 29 15:23:48 1999  Nick Clifton  <nickc@cygnus.com>

        * config/arm/pe.h (ARM_PE): Define.

        * config/arm/arm.c (arm_valid_machine_decl_attribute): Allow
        interfacearm attribute if this is a PE toolchain.
        (output_return_instruction): Do not emit anything if the function
        has the naked attribute set.
        (is_called_in_ARM_mode): If the function has the interfacearm
        attribute then return true.
        (thumb_expand_prologue): Do not generate a prologue for naked
        functions.
        (thumb_expand_epilogue): Do not generate an epilogie for a naked
        function.
        (output_thumb_prologue): Do not bother if the function is naked.
        Strip PE encoding from function name before emitting.

        Thu Oct 28 11:05:13 1999  Richard Earnshaw <rearnsha@arm.com>

        * arm.md (pic_load_addr): Fix constraints.

        * arm.md (casesi_insn): Fix mis-applied patch.

        * arm.md ("core" function unit): Add rules for single- and
        multi-cycle insns.
        (All TARGET_THUMB patterns): Add "type" attribute information
        where needed.
        * arm.c (arm_adjust_cost): Reduce the cost of a data dependency if
        the following insn is a CALL.

        * arm.c (thumb_expand_epilogue): Add a use of the adjusted stack
        pointer.
        * arm.h (CONDITIONAL_REGISTER_USAGE): Nail down the
        ARM_HARD_FRAME_POINTER_REGNUM when TARGET_APCS_FRAME.
        (FRAME_POINTER_REQUIRED): Only check TARGET_APCS_FRAME if TARGET_ARM.

        Wed Oct 27 14:40:48 1999  Nick Clifton  <nickc@cygnus.com>

        * config/arm/linux-gas.h: oops - this file was missed out when the
        branch was created...

        Tue Oct 26 17:07:38 1999  Richard Earnshaw <rearnsha@arm.com>

        * thumb.c: Deleted.  Move contents to ...
        * arm.c: ... here.
        * t-arm-aout, t-arm-coff, t-arm-elf, t-linux, t-netbsd, t-semi: Remove
        rule for thumb.o
        * configure.in (arm*-*-*): Remove thumb.o from extra_objs list.
        * configure: Regen.

        * arm-protos.h: Use RTX_CODE and tidy up long lines.  Don't
        declare a prototype for asm_output_align();

        * arm.c (thumb_condition_code): Delete.
        (arm_print_operand): Always use arm_condition_code array.

        * arm.c (thumb_return_addr_rtx): Delete.
        (arm_save_machine_status, arm_restore_machine_status): Delete.
        (arm_init_machine_status, arm_mark_machine_status): New functions.
        (arm_init_expanders): Update accordingly.
        (arm_return_addr): Renamed from arm_return_addr_rtx.  Rewrite.
        (thumb_expand_prologue): Delete code referencing thumb_return_addr_rtx.
        * arm.h (RETURN_ADDR_RTX): Call arm_return_addr().

        Tue Oct 26 13:24:16 1999  Nick Clifton  <nickc@cygnus.com>

        * configure.in : Fix arm-*-aout target to use new t-arm-aout
        script.
        * config/arm/t-arm-aout: New file: Makefile script for arm-*-aout
        targets.

        Tue Oct 26 11:27:12 1999  Nick Clifton  <nickc@cygnus.com>

        * config/arm/thumb.c (output_thumb_prologue): Fix bug creating
        stack backtrace structure.

        * config/arm/arm-protos.h: Add prototypes for functions defined in
        arm/pe.h.

        * config/arm/arm.c (arm_override_options): Fix selection of
        attributes of default processor.

        * config/arm/coff.h: Delete needless #include.

        * config/arm/pe.c: Delete unused code.

        * config/arm/pe.h (CPP_DEFINES): Delete
        (SUBTARGET_CPP_SPEC): Define.
        (ASM_DECLARE_FUNCTION_NAME): Use ARM_DECLARE_FUNCTION_NAME.

        * config/arm/t-pe: Add -DInhibit_libc to allof libgcc.a to build.

        Mon Oct 25 15:42:09 1999  Richard Earnshaw (rearnsha@arm.com)

        * arm.h (TARGET_APCS_FRAME): Renamed from TARGET_APCS -- all uses
        updated.
        (CAN_DEBUG_WITHOUT_FP): Define.
        (FIXED_REGISTERS): Make r11 call-saved.
        (CALL_USED_REGISTERS): Likewise.
        (CONDITIONAL_REGISTER_USAGE): Fix r11 if TARGET_APCS_FRAME.
        (FRAME_POINTER_REQUIRED): Correct logic for determining when a
        frame-pointer is required.
        (TARGET_DEFAULT): Make default setting include ARM_FLAG_APCS_FRAME.
        * arm.c (arm_override_options): Warn about -mno-apcs-frame and -g
        if the target normally needs a stack frame in non-leaf functions.
        (use_return_insn): Correct logic for determining when a return
        instruction can be used.
        (output_return_instruction): Handle the frame-pointer register as
        a normal register when not TARGET_APCS_FRAME.
        (arm_output_prologue): Likewise.
        (arm_output_epilogue): Likewise.
        (output_func_epilogue): Likewise.
        (arm_expand_prologue): Likewise.
        * netbsd.h semi.h (TARGET_DEFAULT): Add ARM_FLAG_APCS_FRAME.

        * arm.c (use_return_insn): No need to check floating point regs if
        TARGET_SOFT_FLOAT.
        (arm_find_minipool_constant): Correct typo; use GET_CODE to get
        the code of value stored in the minipool array.
        (arm_add_minipool_constant): Likewise.

2000-04-08  Kaveh R. Ghazi  <ghazi@caip.rutgers.edu>

        * basic-block.h (conflict_graph_enum_fn): K&R fix.

2000-04-08  Kaveh R. Ghazi  <ghazi@caip.rutgers.edu>

        * tree.c (tree_expr_nonnegative_p): New function.

        * tree.h (tree_expr_nonnegative_p): Declare.

        * c-typeck.c (build_binary_op): Call `tree_expr_nonnegative_p' to
        elide some sign_compare warnings.
        (build_conditional_expr): Likewise.

Sat Apr  8 00:21:51 EDT 2000  John Wehle  (john@feith.com)

        * i386.md (ashrsi3, ashrhi3, ashrqi3): Fix typo.

        * i386.md (floathisf2, floathidf2, floathixf2): New patterns.
        * i386.c (print_operand): Use the proper suffix for a 387 HImode
        operand.  Abort if a 387 operand has an unsupported size.

2000-04-08  Neil Booth  <NeilB@earthling.net>

        * cppexp.c (parse_charconst): Null does not end character
        constants.
        * cppinit.c (ISTABLE): Null character handled as whitespace.
        * cpplex.c (null_warning):  new function.
        (skip_string): Emit warning if nulls encountered.
        (_cpp_skip_hspace): Emit warning if nulls encountered.
        (_cpp_lex_token): Emit warning if nulls encountered.  Drop
        them.
        * cpp.texi: Update.

2000-04-07  Richard Henderson  <rth@cygnus.com>

        * flow.c (loop_depth): Remove.
        (reg_next_use, cc0_live, mem_set_list): Replace with ...
        (struct propagate_block_info): New.
        (life_analysis): Don't allocate reg_next_use.
        (propagate_block_delete_insn): Break out of propagate_block.
        Use flow_delete_insn to unlink rather than use NOTE_INSN_DELETED.
        (propagate_block_delete_libcall): Likewise.
        (propagate_block): Create a propagate_block_info struct to pass
        to subroutines.  Allocate one not two temporary regsets.  Don't
        clobber memory for const calls.  Look for clobbers in
        CALL_INSN_FUNCTION_USAGE.
        (mark_set_regs): Recognize COND_EXEC.
        (mark_set_reg): Break out of mark_set_1.
        (mark_used_reg): Break out of mark_used_regs.
        (mark_used_regs): Recognize COND_EXEC.
        (insn_dead_p): Use propagate_block_info struct.
        (libcall_dead_p, invalidate_mems_from_autoinc): Likewise.
        (find_auto_inc, try_pre_increment_1): Likewise.
        (print_rtl_with_bb): Dump regs live at end too.
        (count_reg_sets_1): Pass in loop_depth.
        (count_reg_sets, count_reg_references): Likewise.
        (recompute_reg_usage): Provide it.

2000-04-07  Richard Henderson  <rth@cygnus.com>

        * Makefile.in (conflict.o): Depend on $(RTL_H) and $(BASIC_BLOCK_H)
        not the raw files.

2000-04-07  Zack Weinberg  <zack@wolery.cumb.org>

        * cpplib.c (do_elif): Skip the rest of the line if we're
        not going to bother evaluating it.
        (skip_if_group): Clear pfile->only_seen_white.  Reorder loop
        to avoid pointless calls to the lexer.

Fri Apr  7 11:50:54 2000  Jim Wilson  <wilson@cygnus.com>

        * config/ia64/ia64.c: Delete stdio.h and ctype.h includes.

2000-04-07  Jason Merrill  <jason@casey.cygnus.com>

        * calls.c (expand_call): emit_queue if we're trying a sibcall.

2000-04-07  Jakub Jelinek  <jakub@redhat.com>

        * config/sparc/t-linux64 (tcrtbeginS.o, tcrtendS.o): Remove.

2000-04-06  Geoff Keating  <geoffk@cygnus.com>

        * Makefile.in: Build crtbeginS and crtendS like crtbegin and
        crtend so they can be multilibbed.
        (STAGESTUFF): Remove s-crt and s-crtS.

2000-04-07  Richard Henderson  <rth@cygnus.com>

        * config/alpha/alpha.c (alpha_emit_conditional_move): Fail
        if we discover we need a pseudo and no_new_pseudos is true.
        * config/alpha/alpha.md (ne:DI insn): New.
        (trunctfsf2, sne): Emit NE instead of non-canonical LTU.

2000-04-07  Richard Henderson  <rth@cygnus.com>

        * rtl.def (COND_EXEC): New.
        * rtl.h (COND_EXEC_TEST, COND_EXEC_CODE): New.
        * tm.texi (MAX_CONDITIONAL_EXECUTE): Document.

        * genconfig.c (have_cond_arith_flag): Remove.
        (have_cond_exec_flag): New.
        (walk_insn_part): Detect COND_EXEC, not arithmetic in IF_THEN_ELSE.
        (main): Print HAVE_conditional_execution.

        * haifa-sched.c (haifa_classify_insn): Recognize COND_EXEC.
        (sched_analyze_insn, print_pattern): Likewise.
        * reload.c (find_equiv_reg): Likewise.
        * rtlanal.c (reg_referenced_p): Likewise.
        (note_stores, dead_or_set_regno_p): Likewise.
        (reg_overlap_mentioned_p): Rewrite to use a switch.

        * ggc.h (struct rtx_def): Forward declare.

        * print-rtl.c (debug_rtx_range): New.
        * rtl.h (debug_rtx_range): Declare.

        * varray.h (VARRAY_ACTIVE_SIZE, VARRAY_POP_ALL): New.

        * gcse.c (gcse_main): Don't rebuild the CFG here.
        (delete_null_pointer_checks): Likewise.
        * ssa.c (convert_to_ssa): Likewise.
        * toplev.c (rest_of_compilation): Do it here instead.  Combine
        sequential calls to TIMEVAR.  Consistently use `insns' instead of
        `get_insns()'.  Always split insns after reload when optimizing.

        * basic-block.h (merge_blocks_nomove): Declare.
        (tidy_fallthru_edge): Declare.
        * flow.c (merge_blocks_nomove): Document as merging into previous
        blocks.  Remove cruft from between blocks; remove all edges out of A.
        (tidy_fallthru_edge): Export.

2000-04-06  Alex Samuel  <samuel@codesourcery.com>

        * ssa.c (compute_conservative_reg_partition): Declare with
        void arguments.
        * toplev.c (clean_dump_file): Remove previously-deleted function
        inadvertantly merged back in.
        * conflict.c (conflict_graph_add): Use a single call to
        htab_find_slot to look up and insert.

2000-04-06  Richard Henderson  <rth@cygnus.com>

        * genrecog.c (*): Rename _last_insn to last_insn.
        (make_insn_sequence): Set the position of the peephole2 C test
        to be at the last insn.

2000-04-06  Richard Henderson  <rth@cygnus.com>

        * flow.c (compute_flow_dominators): Free worklist.

2000-04-06  Michael Matz  <matzmich@cs.tu-berlin.de>

        * flow.c (compute_flow_dominators): Process blocks FIFO not LIFO.

2000-04-06  Alex Samuel  <samuel@codesourcery.com>

        * rtl.h (INSN_P): New macro.
        (successor_phi_fn): New typedef.
        (for_each_successor_phi): New prototype.
        (in_ssa_form): New variable.
        (PHI_NODE_P): Likewise.
        * flow.c (calculate_global_regs_live): Add to new_live_at_end from
        phi nodes in successors.
        (mark_used_regs): Add PHI case.
        (set_phi_alternative_reg): New function.
        (life_analysis): Assert that dead code elimination is not selected
        when in SSA form.
        * toplev.c (to_ssa_time): New variable.
        (from_ssa_time): Likewise.
        (compile_file): Zero to_ssa_time and from_ssa_time.
        Print time to convert to and from SSA.
        (rest_of_compilation): Time convert_to_ssa and convert_from_ssa.
        (print_time): Compute percent fraction as integer.
        * ssa.c (PHI_NODE_P): Moved to rtl.h.
        (convert_to_ssa): Check if we're already in SSA.
        Don't eliminate dead code in life_analysis.
        Rerun flow and life analysis at bottom.
        (eliminate_phi): Use canonical regnos when adding nodes.
        (mark_reg_in_phi): New function.
        (mark_phi_and_copy_regs): Likewise.
        (convert_from_ssa): Rerun life analysis at top.
        Use coalesced partition.
        Check for removing a phi node at the end of the block.
        (compute_coalesced_reg_partition): New function.
        (coalesce_regs_in_copies): Likewise.
        (coalesce_reg_in_phi): Likewise.
        (coalesce_regs_in_sucessor_phi_nodes): Likewise.
        (for_each_successor_phi): Likewise.
        (rename_context): New struct.
        (rename_block): Use a rename_context with rename_insn_1.  When
        renaming sets of a subreg, emit a copy of the entire reg first.
        (rename_insn_1): Treat data as a rename_context *.  Save current
        insn in set_data.
        (rename_set_data): Add field set_insn.
        * Makefile.in (HASHTAB_H): Move up in file.
        (OBSTACK_H): New macro.
        (collect2.o): Use OBSTACK_H in dependencies.
        (sdbout.o): Likewise.
        (emit-rtl.o): Likewise.
        (simplify-rtx.o): Likewise.
        (fix-header.o): Likewise.
        (OBJS): Add conflict.o.
        (conflict.o): New rule.
        * basic-block.h: Include partition.h.
        (conflict_graph): New typedef.
        (conflict_graph_enum_fn): Likewise.
        (conflict_graph_new): New prototype.
        (conflict_graph_delete): Likewise.
        (conflict_graph_add): Likewise.
        (conflict_graph_conflict_p): Likewise.
        (conflict_graph_enum): Likewise.
        (conflict_graph_merge_regs): Likewise.
        (conflict_graph_print): Likewise.
        (conflict_graph_compute): Likewise.
        * conflict.c: New file.

2000-04-06  Jason Merrill  <jason@yorick.cygnus.com>

        * tlink.c (read_repo_files): Don't look for .rpo info for
        linker flags.

Thu Apr  6 20:39:26 2000  J"orn Rennecke <amylaar@cygnus.co.uk>

        * sh.h (STRUCT_VALUE, RETURN_IN_MEMORY): Define.

Thu Apr  6 19:34:08 2000  J"orn Rennecke <amylaar@cygnus.co.uk>

        * config/sh/lib1funcs.asm (___udivsi3_i4):
        ( __SH4_SINGLE__ / __SH4_SINGLE_ONLY__ variant): value for fpscr
        only depends on FMOVD_WORKS.

Thu Apr  6 19:11:47 2000  J"orn Rennecke <amylaar@cygnus.co.uk>

        * config/sh/lib1funcs.asm (___udivsi3_i4): When using fmovd,
        make double constant 8-byte aligned.

2000-04-06  Jakub Jelinek  <jakub@redhat.com>

        * config/sparc/sparc.md (movtf_insn_sp32, movtf_insn_vis_sp32,
        movtf_no_e_insn_sp32, movtf_insn_hq_sp64, movtf_insn_hq_vis_sp64,
        movtf_no_e_insn_sp64): Accept loading 0.0 into GENERAL_REGS.
        (movtf_insn_sp64, movtf_insn_vis_sp64): Likewise.
        Accept storing GENERAL_REGS into offsetable memory.
        * config/sparc/sparc.h (PREFERRED_RELOAD_CLASS): Don't allow
        building a TFmode constant other than 0.0L into GENERAL_REGS.

2000-04-06  Clinton Popetz  <cpopetz@cygnus.com>

        * regrename.c (regrename_optimize): Handle no REG_ALLOC_ORDER.

2000-04-06  Zack Weinberg  <zack@wolery.cumb.org>

        * cpphash.c (CPP_IS_MACRO_BUFFER, FORWARD, PEEKC): Delete.
        (macro_cleanup): No need to cast pbuf->macro.
        (collect_expansion): Use _cpp_get_define_token.  Goto done if
        it returns VSPACE.  Remove check for trailing space after
        CPP_COMMENT.
        (_cpp_create_definition): Don't diddle flags here.  Return
        directly on error.
        (unsafe_chars): Handle c1 being EOF.
        (push_macro_expansion): Use unsafe_chars for both accidental-paste
        checks.  Don't push the buffer till after we're done with
        them.
        * cpplex.c (PEEKBUF, GETBUF, FORWARDBUF): New.
        (PEEKN, FORWARD, GETC, PEEKC): Use them.
        (cpp_push_buffer): Don't set new->alimit.  Set new->mark
        appropriately.
        (_cpp_parse_assertion): Don't NUL terminate.
        (_cpp_lex_token): Fix -traditional macro handling.  Don't skip
        hspace before calling _cpp_parse_assertion.  Remove all sets
        of only_seen_white. Treat '\f' as hspace.  Don't do anything
        special with '\n' here.
        (maybe_macroexpand): Handle T_EMPTY hash entries without
        pushing a buffer at all.
        (cpp_get_token): Handle clearing only_seen_white here.  Handle
        incrementing the line number here.  Clear
        potential_control_macro as well as only_seen_white, if
        appropriate.
        (cpp_get_non_space_token): Don't eat CPP_POP tokens.
        (_cpp_get_define_token): New function, basically like
        _cpp_get_directive_token was but doesn't eat horizontal space.
        Don't do anything with only_seen_white here.
        (_cpp_get_directive_token): Just call _cpp_get_define_token
        repeatedly till it returns non-hspace.

        * cpplib.c (PEEKN, FORWARD, GETC, PEEKC): Delete.
        (conditional_skip, skip_if_group): Return int.
        (DIRECTIVE_TABLE): Change origin of all conditional directives
        to "COND".
        (TRAD_DIRECT_P): New macro.
        (_cpp_handle_directive): Use _cpp_get_directive_token.  Issue
        an error for a bogus directive, unless -lang-asm.  Use
        TRAD_DIRECT_P. Loop calling handler functions till one returns
        zero.
        (get_macro_name): Don't diddle flags here.
        (do_define): Diddle flags here.  Use _cpp_get_directive_token.
        Create T_EMPTY nodes for #define macro /* nothing */.
        (do_undef): Don't copy the name.  Use _cpp_get_directive_token.
        Use hp->name when calling pass_thru_directive.
        (do_if, do_else, do_elif, do_ifdef, do_ifndef, conditional_skip):
        Return the result of conditional_skip and/or skip_if_group.
        Don't call _cpp_output_line_command.
        (consider_directive_while_skipping): Use _cpp_get_directive_token.
        Issue -Wtraditional warnings as appropriate.  Don't complain
        about unrecognized directives.  If we are to stop skipping,
        return the number of the directive that ended the skip.
        (skip_if_group): Use _cpp_get_directive_token.  Turn off macro
        expansion and line commands while skipping.  Return the result
        of consider_directive_while_skipping, if nonzero.
        (do_endif): Just set potential_control_macro here.
        (validate_else): Use _cpp_get_directive_token.
        (do_assert, do_unassert): Don't save pointers into the
        token_buffer across calls to the lexer.  Use
        _cpp_get_directive_token.

        * cpplib.h (cpp_buffer): Remove alimit and colno.  Make mark a
        pointer, not an offset.  Replace 'data', which was a generic
        pointer, with 'macro', which points to a struct hashnode.
        (cpp_reader): Add 'potential_control_macro' pointer.
        * cpphash.h (T_UNUSED): Replace with T_EMPTY.
        (CPP_BUF_GET, CPP_FORWARD): Delete.
        (CPP_IN_COLUMN_1, ADJACENT_TO_MARK): New macros.
        (CPP_IS_MACRO_BUFFER, CPP_SET_BUF_MARK, CPP_GOTO_BUF_MARK,
        ACTIVE_MARK_P): Update.
        (_cpp_get_define_token): New internal function.
        * cppfiles.c (read_include_file): Don't set fp->alimit or fp->colno.

2000-04-05   Benjamin Kosnik  <bkoz@cygnus.com>

        * configure.in: And here.
        * configure: Regenerate.
        * acconfig.h: Add ENABLE_STD_NAMESPACE to set flag_honor_std if
        --enable-libstdcxx-v3 is passed at configure time.
        * config.h.in: Regenerate.

2000-04-05  Mark Mitchell  <mark@codesourcery.com>

        * final.c (final): Use xcalloc to allocate line_note_exists.
        * function.c (free_after_compilation): Free the temp_slots.
        (assign_stack_temp_for_type): Use xmalloc to allocate temp_slots.
        (combine_temp_slot): Free temp_slots when they get combined.
        (purge_addressof): Fix typo in comment.
        * stmt.c (mark_goto_fixup): Mark the fixup itself.
        (expand_fixup): Allocate the fixup with ggc_alloc_obj.

        * ggc.h: Include varray.h.
        (ggc_pending_trees): Declare.
        (ggc_mark_tree_children): Remove declaration.
        (ggc_mark_tree): Just push unmarked trees on ggc_pending_trees.
        * ggc-common.c (ggc_pending_trees): New variable.
        (ggc_mark_roots): Call ggc_mark_trees.
        (ggc_mark_tree_children): Rename to ggc_mark_trees.  Process all
        the ggc_pending_trees.
        * Makefile.in (GGC_H): New variable.  Use it throughout in place
        of ggc.h.

Thu Apr  6 00:30:50 2000  J"orn Rennecke <amylaar@cygnus.co.uk>

        * sh.h (FUNCTION_ARG_PARTIAL_NREGS): Accomodate an unsigned
        GET_MODE_SIZE.

Wed Apr  5 23:17:10 2000  J"orn Rennecke <amylaar@cygnus.co.uk>

        * sh.c (sh_insn_length_adjustment): New function.
        * sh-protos.h (sh_insn_length_adjustment): Declare.
        * sh.h (ADJUST_INSN_LENGTH): Use it.

Wed Apr  5 12:35:18 2000  Hans-Peter Nilsson  <hp@axis.com>

        * optabs.c (emit_libcall_block): Remove spurious REG_EQUAL notes
        from the insn where REG_RETVAL is added.
        (emit_no_conflict_block): Ditto.

        * md.texi (Standard Names): Clarify when movX is needed.

        * combine.c (simplify_comparison) [MINUS]: Do not replace
        all (op (minus A B) 0) with (op A B).

Wed Apr  5 18:03:31 2000  Toshiyasu Morita  (toshi.morita@sega.com)
                          J"orn Rennecke <amylaar@cygnus.co.uk>

        * sh.md (block_lump_real_i4): Add missing clobber of T_REG
        (block_lump_real): Likewise.

2000-04-05  Chris Demetriou  <cgd@netbsd.org>

        * mips.h (MASK_DEBUG_A, MASK_DEBUG_B, MASK_DEBUG_C): Zero the
        remaining non-zero debugging masks.

Wed Apr  5 09:44:07 2000  Jeffrey A Law  (law@cygnus.com)

        * basic-block.h (verify_flow_info): Declare.
        (flow_loop_outside_edge_p): Declare.
        * flow.c (verify_flow_info): Remove declaration.
        (clear_log_links, flow_loop_outside_edge_p): Likewise.

Wed Apr  5 09:34:26 2000  Philippe De Muyter <phdm@macqel.be>

        * m68k/m68k-protos.h (finalize_pic): Turn prototype off using `#if 0',
        not C++ comments.

2000-04-05  Jakub Jelinek  <jakub@redhat.com>

        * config/sparc/sparc.md (snedi_zero+1, neg_snedi_zero+1,
        snedi_zero_trunc+1, seqdi_zero+1, neg_seqdi_zero+1,
        seqdi_zero_trunc+1): Allow splits only if registers are
        different.

2000-04-04  Ulrich Drepper  <drepper@cygnus.com>

        * acconfig.h: Add HAVE_GAS_HIDDEN.
        * config.in: Regenerated.
        * configure.in: Add test for .hidden pseudo-op in gas.
        * configure: Regenerated.
        * crtstuff.c: Include auto-host.h.
        Emit additional .hidden pseudo-op for __dso_handle if the
        assembler knows about it.

2000-04-04  Philippe De Muyter  <phdm@macqel.be>

        * cpphash.c (_cpp_free_definition): Test argnames, not nargs >= 0,
        before freeing argnames.
        * cpplib.c (do_ifndef): Cast return value of xstrdup.

2000-04-05  Michael Meissner  <meissner@redhat.com>

        * config/rs6000/rs6000.c (print_operand): Patch from Jonathan
        Walton <jonboy@gordian.com> to make memory references with update
        work wtih -mregnames.

2000-04-04  Kaveh R. Ghazi  <ghazi@caip.rutgers.edu>

        * regrename.c (regno_first_use_in): Wrap prototype in PARAMS.
        (regrename_optimize): Rename variables `def_uses' and
        `ext_basic_blocks' to avoid conflicts with similarly named
        typedefs in traditional C.

        * calls.c (initialize_argument_information): Fix typo in previous
        change.

2000-04-04  Richard Henderson  <rth@cygnus.com>

        * regrename.c (consider_available): Test fixed_regs not
        PIC_OFFSET_TABLE_REGNUM.

2000-04-04  Geoff Keating  <geoffk@cygnus.com>

        * config/rs6000/t-ppccomm (EXTRA_MULTILIB_PARTS): Add crtbegin,
        crtend.
        (CRTSTUFF_T_CFLAGS_S): Delete definition.
        * config/rs6000/sysv4.h (STARTFILE_LINUX_SPEC): Always use crtbegin.
        (ENDFILE_LINUX_SPEC): Always use crtend.
        * configure.in (powerpc-*-linux-gnulibc1): Don't define extra_parts.
        (powerpc-*-linux-gnu): Likewise.
        * configure: Regenerate.

        * config/rs6000/eabi.h: Don't include sysv4.h.
        (MULTILIB_DEFAULTS): Don't define.
        * config/rs6000/eabiaix.h: Don't include eabi.h.
        * config/rs6000/eabile.h: Delete.
        * config/rs6000/eabilesim.h: Delete.
        * config/rs6000/eabisim.h: Don't include eabi.h.
        * config/rs6000/linux.h: Don't include sysv4.h.
        (JUMP_TABLES_IN_TEXT_SECTION): Don't redefine.
        (MULTILIB_DEFAULTS): Don't redefine.
        * config/rs6000/rtems.h: Don't include eabi.h.
        * config/rs6000/sol2.h: Don't include sysv4le.h.
        * config/rs6000/sysv4le.h: Don't include sysv4.h.
        * config/rs6000/t-ppc: Delete.
        * config/rs6000/t-ppcgas: Correct comment.
        * config/rs6000/t-ppcos: Correct comment.  Don't build
        multilibs for -fPIC, rather use -fPIC -mstrict-align
        as default.
        * config/rs6000/t-ppc: Delete.
        * config/rs6000/vxppc.h: Don't include sysv4.h.
        * config/rs6000/vxppcle.h: Delete.
        * configure.in: Use multiple header files for p2pc ELF targets
        powerpc-eabiaix, powerpc-eabisim, powerpc-rtems, powerpcle-eabi,
        powerpcle-eabisim, powerpc-elf, powerpcle-elf, powerpc-linux-gnu,
        powerpc-linux-gnulibc1, powerpc-sysv, powerpcle-sysv,
        powerpc-vxworks, powerpcle-vxworks.  Assume GAS functionality is
        always available for these platforms.

2000-04-04  Richard Henderson  <rth@cygnus.com>

        * calls.c (try_to_integrate): Initialize reg_parm_stack_space.

2000-04-04  Stan Cox  <scox@cygnus.com>

        * Makefile.in: Add rules for regrename.o
        * regrename.c: New file.
        * rtl.h (regrename_optimize): Add prototype.
        * toplev.c (rename_registers_dump, flag_rename_registers): New variables
        (compile_file, decode_d_option): Add support for -frename-registers.
        (rest_of_compilation): Call regrename_optimize.
        * config/ia64/ia64.h (HARD_REGNO_RENAME_OK, RENAME_EXTENDED_BLOCKS):
        New macros.

2000-04-04  Martin v. Löwis  <loewis@informatik.hu-berlin.de>

        * Makefile (gccbug): New target.
        (doc): Depend on it.
        * gcc.texi (Bugs): Link subnodes.
        (gccbug): New node.
        * gccbug.in (CATEGORIES): Remove gc, host, profiling, libgcc.
        Document severities, priorities, and classes in bug form.

2000-04-04  Zack Weinberg  <zack@wolery.cumb.org>

        * cpplex.c (trigraph_map, speccase): Combine into single
        table, chartab.
        (NORMAL, NONTRI): New macros.
        (_cpp_read_and_prescan): Change to use unified table.  Use
        is_hspace to test for whitespace.

        * dbxout.c (CONTIN): If it doesn't have to do anything, give it a
        definition that doesn't provoke the "empty body in an
        if-statement" warning.

2000-04-04  Clinton Popetz  <cpopetz@cygnus.com>

        * builtins.c (expand_builtin_strlen): Force the source to
        be a memory address.

2000-04-04  Kaveh R. Ghazi  <ghazi@caip.rutgers.edu>

        * cpplib.c (D): Adjust to call CONCAT2 macro without whitespace.

Tue Apr  4 19:17:20 MET DST 2000  Jan Hubicka  <jh@suse.cz>

        * calls.c (ECF_MALLOC, ECF_MAY_BE_ALLOCA, ECF_RETURNS_TWICE,
         ECF_LONGJMP, ECF_FORK_OR_EXEC):  New constants.
        (ECF_IS_CONST): Rename to ECF_CONST.
        (special_function_p): Make static, change interface.
        (flags_from_decl_or_type, try_to_integrate): Break out from ...
        (expand_call) ... here; convert number of variables to flags.
        (emit_library_call_vlue_1): Likewise.
        (setjmp_call_p): New function.
        (initialize_argument_information): Accepts flags as argument;
        return flags.
        (precompute_arguments): Likewise.
        * tree.h (special_function_p): Remove.
        (setjmp_call_p): Add prototype.

2000-04-04  Jakub Jelinek  <jakub@redhat.com>

        * config/sparc/sparc.h (RTX_OK_FOR_OFFSET_P): Leave minor margin
        so that addresses are offsetable by up to 16 bytes.
        (GO_IF_LEGITIMATE_ADDRESS): Don't allow REG+REG addresses for
        non-optimizing TARGET_ARCH32 in DF or DI modes because it is not
        offsetable.

        * config/sparc/sparc.md (movdi_insn_sp64_novis): New pattern.
        (movdi_insn_sp64_vis): Renamed from movdi_insn_sp64.
        (movsf): Don't force any constant to memory if target is integer
        hard register.
        Move fp_zero_operand check below the const0_rtx check.
        (movtf): Likewise. Also allow fp_zero_operand for stores into
        memory.
        (movdf): Likewise. Also allow fp_zero_operand for stores into
        memory and into integer hard registers.
        (clear_df, clear_dfp, movdf_const_intreg_sp32,
        movdf_const_intreg_sp64): Remove.
        (movdf_insn_sp32, movdf_no_e_insn_sp32): Redo constraints and
        conditions.
        (movdf_no_e_insn_v9_sp32): New pattern.
        (movdf_insn_v9only): Remove.
        (movdf_insn_v9only_novis, movdf_insn_v9only_vis): New patterns.
        (movdf_insn_sp64): Remove.
        (movdf_insn_sp64_novis, movdf_insn_sp64_vis): New patterns.
        (movdf_no_e_insn_sp64): Allow storing 0.0 into memory.
        (following splits): Rewrite conditions. Add two new splits
        for storing 0.0 into memory and registers.
        (clear_tf, clear_tf+1, clear_tfp, clear_tfp+1): Remove.
        (movtf_insn_sp32): Redo constraints and conditions.
        (movtf_insn_vis_sp32): New pattern.
        (movtf_no_e_insn_sp32): Redo constraints and conditions.
        (movtf_insn_hq_sp64): Likewise.
        (movtf_insn_hq_vis_sp64): New pattern.
        (movtf_insn_sp64): Redo constraints and conditions.
        (movtf_insn_vis_sp64): New pattern.
        (movtf_no_e_insn_sp64): Redo constraints and conditions.
        (movtf_no_e_insn_sp64+1): New split for storing 0.0L into registers
        or memory.
        * config/sparc/sparc.c (sparc_override_options): Assume v9 if either
        -mvis or -m64 to take down the number of various reload patterns.

Tue Apr  4 00:41:53 2000  Jeffrey A Law  (law@cygnus.com)

        * pa/pa-64.h: New file.
        * pa/pa64-regs.h: New file.
        * pa/pa64-start.h: New file.
        * pa/t-pa64: New file.
        * pa/xm-pa64hpux.h: New file.

2000-04-03  Kaveh R. Ghazi  <ghazi@caip.rutgers.edu>

        * sparc.c (output_restore_regs): Prototype.
        (sparc_emit_float_lib_cmp): Constification.

        * emit-rtl.c (const_int_htab_hash, const_int_htab_eq): Likewise.

        * reload1.c (reload_cse_delete_noop_set, reload_cse_simplify):
        Prototype.

        * simplify-rtx.c (entry_and_rtx_equal_p): Constification.
        (get_value_hash, hash_rtx): Likewise.

        * ssa.c (compute_conservative_reg_partition): Prototype.

        * tree.c (mark_hash_entry): Prototype.

2000-04-03  Zack Weinberg  <zack@wolery.cumb.org>

        * bb-reorder.c (verify_insn_chain): #ifdef out unless ENABLE_CHECKING.
        * i386.h (FUNCTION_ARG_REGNO_P): Remove unnecessary test for N >= 0.
        * i386.md (call_value, call_value_pop): Remove unused variable 'addr'.

        * gcc.c (C specs): Pass -fno-show-column to the preprocessor.
        * objc/lang-specs.h: Likewise.

2000-04-03  Neil Booth  <NeilB@earthling.net>

        * cppexp.c: wrap long lines.  New macros CPP_ICE, SYNTAX_ERROR
        and SYNTAX_ERROR2. Replace `' in messages with ''.
        (op_to_str): Make re-entrant.
        (_cpp_parse_expr): Implement new error macros. Use | rather
        than || to logically or 2 boolean integers.  Simply expression
        checking we have a left operand iff needed.

2000-04-03  Nick Clifton  <nickc@cygnus.com>

        * Makefile.in (diagnostic.o): Depend upon diagnostic.c

2000-04-03  Philip Blundell  <philb@gnu.org>

        * config/arm/linux-elf.h (SUBTARGET_EXTRA_LINK_SPEC): Fix typos.

2000-04-03  Felix Lee  <flee@cygnus.com>

        * fixinc/server.c (find_shell): New function.  Avoid $SHELL.
        (run_shell): Use it.

2000-04-03  Jonathan Larmour  <jlarmour@redhat.co.uk>

        * Makefile.in (stmp-int-hdrs): Make include subdir here...
        (stmp-fixproto): ...rather than here.

Mon Apr  3 00:50:06 2000  Jason Eckhardt <jle@cygnus.com>

        * pa.c (print_operand): Compute 'base' only inside the code paths
        that use it.

2000-04-03  Geoffrey Keating  <geoffk@cygnus.com>

        * stor-layout.c (byte_from_pos): Use TRUNC_DIV_EXPR rather than
        CEIL_DIV_EXPR.

2000-04-03  Philipp Thomas  <pthomas@suse.de>

        * i386.h (TARGET_SWITCHES): Remove bogus empty strings, fix typo.

Mon Apr  3 00:02:59 2000  Brad Lucier <lucier@math.purdue.edu>

        * Makefile.in (alias.o): Depend on $(TREE_H).

2000-04-02  Zack Weinberg  <zack@wolery.cumb.org>

        * cppinit.c (cpp_start_read): Turn off -Wtraditional if
        processing C++.
        * cpplib.c (_cpp_handle_directive): Improve warnings for
        traditional C and indented directives.

        * enquire.c, gsyslimits.h, limity.h, config/convex/fixinc.convex,
        fixinc/fixinc.irix, fixinc/fixinc.sco, fixinc/fixinc.wrap,
        fixinc/inclhack.def: Indent the # of #include_next one space.
        * cp/rtti.c: Un-indent #if and #endif.

        * cppexp.c (_cpp_parse_expr): If lex returns '#', it's a
        syntax error, but an error has already been printed.
        * cpplex.c (_cpp_parse_assertion): Give a more specific error
        message when called with nothing remaining on the line.
        (_cpp_lex_token): If _cpp_parse_assertion fails, return an
        OTHER token, not an ASSERTION.
        * cpplib.c (do_assert): When we create a 'base' node, clear
        its aschain pointer.

2000-04-02  Neil Booth <NeilB@earthling.net>

        * cppexp.c:  New typedef op_t.  struct operation and struct
        token updated to use it.
        (op_to_str): New function.
        (_cpp_parse_expr): Error messages modified to use op_to_str.

2000-04-02  Michael Hayes  <m.hayes@elec.canterbury.ac.nz>

        * config/c4x/c4x.c (c4x_function_arg): Check for void_type_node
        before checking MUST_PASS_IN_STACK.

2000-04-02  Neil Booth <NeilB@earthling.net>

        * cppexp.c:  New FINISHED dummy token.  Combine operator initial
        flags and initial priority into a single constant.  New
        EQUALITY macro.  New operator flag SHORT_CIRCUIT.
        (_parse_cpp_expr): Implement new constants.  Take left operand
        checks out of reduction loop.  Handle SHORT_CIRCUIT.  End of
        parse indicated by reducing FINISHED token.  Remove new lines
        from cpp_error messages.

2000-04-01  Mark Mitchell  <mark@codesourcery.com>

        * emit-rtl.c (gen_rtx_CONST_INT): Create cached CONST_INTs on the
        permanent obstack.

2000-04-01  Zack Weinberg  <zack@wolery.cumb.org>

        * cpplib.c: Include symcat.h.  Add 'origin' field to struct
        directive.  Add origin values to DIRECTIVE_TABLE.  Generate
        the strings and function names on the fly.  Take the #sccs
        entry out of the table if SCCS_DIRECTIVE is not defined.
        (_cpp_handle_directive): Decide if the # was at the beginning
        of the line here.  Issue -pedantic warnings for extended
        directives here.  Warn about K+R directives with the #
        indented, and C89/extended directives with the # not indented,
        here.
        (do_import, do_include_next, do_warning, do_ident, do_sccs,
        do_assert, do_unassert): Don't issue pedantic warning here.

        * cpphash.h: Add CPP_WTRADITIONAL macro.
        * cpplib.h (struct cpp_options): Rename warn_stringify to
        warn_traditional; update comments.
        * cppinit.c (handle_option): Set warn_traditional not
        warn_stringify.
        * cpphash.c: Replace CPP_OPTION (pfile, warn_stringify) with
        CPP_WTRADITIONAL (pfile).
        * cpplex.c (_cpp_lex_token): Don't decide if directives should
        be ignored in -traditional mode here.

        * cpplex.c: Copy ISTABLE macros from cppinit.c, and adapt them
        to initialize speccase[] and trigraph_map[].  Delete all
        references to pfile->input_speccase.  Always treat '?' as a
        special character.  Remove table-initialization code from
        _cpp_init_input_buffer.

        * cpplib.h (struct cpp_reader): Remove input_speccase field.
        * cppinit.c (cpp_cleanup): Don't free input_speccase.

2000-04-01  Richard Henderson  <rth@cygnus.com>

        * Makefile.in (STAGESTUFF): Wildcard all debugging dumps at once.
        (mostlyclean): Likewise.

        * toplev.c (rtl_dump, jump_opt_dump, etc): Remove.
        (struct dump_file_info, enum dump_file_index, dump_file): New.
        (open_dump_file): Take a dump_file_index not a suffix, and a decl
        not a string.  Clean out file if we havn't yet done so.  Do nothing
        if the dump isn't enabled.
        (close_dump_file): Do nothing if the dump isn't open.  Dump
        graph data if requested.
        (dump_rtl, clean_dump_file): Remove.
        (compile_file): Don't clean the dump files.  Only finalize .bp dump
        if flag_test_coverage or flag_branch_probabilities.  Only finalize
        .combine dump if optimizing.  Iterate over dump_file to finalize the
        graph dumps.
        (rest_of_compilation): Update for open_dump_file/close_dump_file.
        Convert all uses of dump_rtl.
        (decode_d_option): Iterate over dump_file to implement 'a' and to
        locate pass-specific dumps.

2000-04-01  Neil Booth <NeilB@earthling.net>

        * cppexp.c: Redefine priority constants.
        (_cpp_parse_expr): Replace left and right priority scheme with
        single priority logic.  Move LOGICAL to same place as COMPARE.
        Remove bogus check for multiple unary +/- operators.

2000-04-01  Neil Booth <NeilB@earthling.net>

        * cppexp.c: (_cpp_parse_expr): Numerical constants are pushed
        within the switch statement.  Binary operations break out of
        the switch naturally.  '(' tokens handled by forcing
        immediate shift.  ')' handled by forcing immediate reduce to
        the previous '('.  New error messages.

2000-03-31  Geoff Keating  <geoffk@cygnus.com>

        * config/rs6000/rs6000.c (print_operand): Don't use %l for 'low
        part', it's already in use.  Use %K instead.  Add a return at the
        end of what is now %K.
        * config/rs6000/rs6000.md (elf_low): Use %K instead of %l.

Sat Apr  1 02:05:29 MET DST 2000  Jan Hubicka  <jh@suse.cz>

        * builtins.c  (expand_builtin_apply):  Pass proper parameters to
        allocate_dynamic_stack_space.
        * calls.c (emit_call_1):  Do not adjust stack pointer for SIB,
        update stack_pointer_delta; do not update arg_size_so_far.
        (compute_argument_block_size): Use stack_delta instead of
        stack_pointer_pending and arg_size_so_far.
        (expand_call): Add sanity checking for stack_pointer_delta;
        save and restore stack_pointer_delta for SIB, use
        stack_pointer_delta for alignment; do not update arg_space_so_far.
        (emit_library_call_value): Use stack_pointer_delta for alignment.
        (store_one_arg): Do not update arg_space_so_far.
        * explow.c (adjust_stack, anti_adjust_stack): Update
        stack_pointer_delta.
        (allocate_dynamic_stack_space): Add sanity checking for
        stack_pointer_delta.
        * expr.c (init_expr, clear_pending_stack_adjust): Clear
        stack_pointer_delta.
        (emit_push_insn): Update stack_pointer_delta.
        * function.h (struct expr_status): Add x_stack_pointer_delta;
        remove x_arg_space_so_far.
        (arg_space_so_far): Remove.
        (stack_pointer_delta): New macro.

2000-03-31  Zack Weinberg  <zack@wolery.cumb.org>

        * cpplib.h: Merge struct cpp_options into struct cpp_reader.
        Reorder struct cpp_options and struct cpp_reader for better
        packing.  Replace CPP_OPTIONS macro with CPP_OPTION which
        takes two args.  Change all 'char' flags to 'unsigned char'.
        Move show_column flag into struct cpp_options.  Don't
        prototype cpp_options_init.
        * cpphash.h, cpperror.c, cppexp.c, cppfiles.c, cpphash.c,
        cppinit.c, cpplex.c, cpplib.c:
        Replace CPP_OPTIONS (pfile)->whatever with
        CPP_OPTION (pfile, whatever), and likewise for
        opts = CPP_OPTIONS (pfile); ... opts->whatever;

        * cppinit.c (merge_include_chains): Take a cpp_reader *.
        Extract CPP_OPTION (pfile, pending) and work with that
        directly.
        (cpp_options_init): Delete.
        (cpp_reader_init): Turn on on-by-default options here.
        Allocate the pending structure here.
        (cl_options, enum opt_code): Define these from the same table,
        kept in a large macro.  Add -fshow-column and -fno-show-column
        options.

        * cpperror.c (v_message): If show_column is off, don't print
        the column number.

        * cppmain.c: Update for new interface.
        * fix-header.c: Likewise.

2000-03-30  Geoff Keating  <geoffk@cygnus.com>

        * config/rs6000/t-aix43 (AR_FLAGS_FOR_TARGET): Adjust for new
        definition.
        * Makefile.in (AR_FLAGS_FOR_TARGET): Is now the flags that
        are passed to any invocation of AR_FOR_TARGET.
        (AR_CREATE_FOR_TARGET): New macro.
        (AR_EXTRACT_FOR_TARGET): New macro.
        (ORDINARY_FLAGS_TO_PASS): Add AR_CREATE_FOR_TARGET,
        AR_EXTRACT_FOR_TARGET.
        (many places): Use AR_CREATE_FOR_TARGET, AR_EXTRACT_FOR_TARGET
        in place of `$(AR_FOR_TARGET) $(AR_FLAGS_FOR_TARGET)' and
        `$(AR_FOR_TARGET) x'.  Pass AR_CREATE_FOR_TARGET and
        AR_EXTRACT_FOR_TARGET to sub-makes.

2000-03-31  Neil Booth <NeilB@earthling.net>

        * cppexp.c: Delete SKIP_OPERAND.  Correct priority
        PAREN_INNER_PRIO.
        (_cpp_parse_expr): Check for multiple unary +/- operators.
        Correct priorities of ':' and '?'.  Treat ')' as having a
        value.  Ensure conditional expression is not void.

2000-03-31  Mark Mitchell  <mark@codesourcery.com>

        * alias.c (canon_rtx): Make it global.
        (rtx_equal_for_memref_p): CONST_INT equality is now pointer
        equality.
        * cse.c (struct table_elt): Add canon_exp.
        (insert): Clear it.
        (invalidate): Canonicalize expressions only once.
        * rtl.h (canon_rtx): Declare.

2000-03-30  Mark Mitchell  <mark@codesourcery.com>

        * Makefile.in (emit-rtl.o): Depend on HASHTAB_H.
        * alias.c (reg_known_value): Add comments.
        (init_alias_analysis): Likewise.
        * cse.c (exp_equiv_p): CONST_INTs are equal iff they have the same
        address.
        (cse_basic_block): Fix typo in comment.
        * emit-rtl.c: Include hashtab.h.
        (const_int_htab): New variable.
        (const_int_htab_hash): New function.
        (const_int_htab_eq): Likewise.
        (rtx_htab_mark_1): Likewise.
        (rtx_htab_mark): Likewise.
        (gen_rtx_CONST_INT): Cache all CONST_INTs.
        (unshare_all_rtx): Fix formatting.
        (init_emit_once): Initialize const_int_htab.
        * rtl.c (rtx_equal_p): CONST_INTs are equal iff they have the same
        address.
        * rtl.texi: Document the fact that all CONST_INTs with the same
        value are shared.

2000-03-30  Richard Henderson  <rth@cygnus.com>

        * alpha.h (FUNCTION_BOUNDARY): Reduce to 128 bits.

2000-03-30  Zack Weinberg  <zack@wolery.cumb.org>

        * configure.in: Comment out --enable-c-cpplib stanza.
        * configure: Regenerate.

Thu Mar 30 06:32:51 2000  Richard Kenner  <kenner@vlsi1.ultra.nyu.edu>

        * expr.c (store_constructor): Properly compute displacement and
        alignment when offset is variable.

        * expmed.c (store_bit_field, store_fixed_bit_field): Fix more
        cases of alignment in bytes.

Thu Mar 30 13:30:40 2000  Jeffrey A Law  (law@cygnus.com)

        * c-parse.in (cast_expr): Move change from March 21 into c-parse.in
        since it is used to generate c-parse.y.
        * objc-parse.c, objc-parse.y: Regenerated.

        * function.c (expand_function_end): Pass alignment argument to
        emit_block_move in bits, not bytes.

Thu Mar 30 06:32:51 2000  Richard Kenner  <kenner@vlsi1.ultra.nyu.edu>

        * expr.c (move_by_pieces_ninsns): Fix one more missing align
        correction.

        * expmed.c (store_fixed_bit_field): STRUCT_ALIGN is in bits.

        * calls.c (expand_call): Pass bit alignment to mark_reg_pointer.
        * explow.c (memory_address, allocate_dynamic_stack_space): Likewise.
        * function.c (assign_parms): Likewise.
        * integrate.c (expand_inline_function): Likewise.
        * stmt.c (expand_decl): Likewise.
        (copy_rtx_and_substitute): Likewise.
        * expr.c (expand_expr, expand_expr_unaligned): Likewise.
        (clear_by_pieces): Fix error in last change.
        * emit-rtl.c (init_emit): Set known registers alignment in bits.
        * function.h (regno_pointer_align): Now unsigned.
        * config/arm/arm.c (alignable_memory_operand): REGNO_POINTER_ALIGN
        is in bits.
        * config/i386/i386.c (aligned_operand): Likewise.
        * config/sparc/sparc.c (mem_min_alignment): Likewise.
        * config/alpha/alpha.c (aligned_memory_operand): Likewise.
        (unaligned_memory_operand): Likewise.
        (alpha_expand_block_move, alpha_expand_block_clear): Likewise.
        Also make alignments and sizes unsigned and some whitespace cleanup.
        (alpha_va_start): Do nothing if VALIST's type is error_mark_node.

        * builtins.c (get_pointer_alignment): Use host_integerp & tree_low_cst.
        (expand_builtin_apply): Pass alignment to emit_block_move in bits.
        (expand_builtin_memcpy, expand_builtin_va_copy): Likewise.
        (expand_builtin_memset): Likewise, but to clear_storage.
        * calls.c (save_fixed_argument_area): Likewise, to move_by_pieces.
        (restore_fixed_argument_area): Likewise.
        (store_unaligned_arguments_into_pseudos): Likewise, to store_bit_field.
        (load_register_parameters): Likewise, to emit_group_load.
        (expand_call): Likewise, to emit_group_store and emit_block_move.
        (emit_library_call_value_1): Likewise, to emit_block_move.
        (store_one_arg): Likewise, and to emit_push_insn.
        * expmed.c (extract_bit_field): Alignment is in bits, not bytes.
        (extract_fixed_bit_field, extract_split_bit_field): Likewise.
        * expr.c (move_by_pieces, move_by_pieces_ninsns): Likewise.
        (emit_block_move, emit_group_load, emit_group_store): Likewise.
        (clear_by_pieces, clear_storage, emit_push_insn): Likewise.
        (expand_assigment, store_expr, store_constructor_field): Likewise.
        (expand_expr_unaligned, do_jump, do_compare_and_jump): Likewise.
        (store_constructor, store_field, get_inner_reference): Likewise.
        Use host_integerp and tree_low_cst; sizes and positions HOST_WIDE_INT.
        (expand_expr, case COMPONENT_REF): Likewise.
        (copy_blkmode_from_regs): Use UNSIGNED_HOST_WIDE_INT for sizes
        and positions; reindent code.
        * expr.h (emit_cmp_insn, emit_cmp_and_jump_insns): Alignment unsigned.
        * function.c (purge_addressof_1): Pass bit align to store_bit_field.
        (assign_parms): Likewise to emit_group_store.
        * optabs.c (prepare_cmp_insn): Alignment is in bits.
        (emit_cmp_and_jump_insns, emit_cmp_insn): Likewise, and also unsigned.
        * stmt.c (expand_value_return): Pass align in bits to emit_group_load.
        (expand_return): Likewise to {extract,store}_bit_field.
        * stor-layout.c (get_mode_alignment): Minor cleanup.
        * config/rs6000/rs6000.h (SLOW_UNALIGNED_ACCESS): Align is in bits.
        * config/sh/sh.h (MOVE_BY_PIECES_P): Likewise.

2000-03-29  Nick Clifton  <nickc@cygnus.com>

        * config/arm/arm.h: Undo effects of previous delta:
        (ASM_SPEC): Do not define.
        (SUBTARGET_EXTRA_ASM_SPEC): Do not define.

        * config/arm/linux-elf.h: (SUBTARGET_EXTRA_ASM_SPEC) Fix
        typo.

2000-03-29  Zack Weinberg  <zack@wolery.cumb.org>

        * cppinit.c (cpp_start_read): Call initialize_dependency_output
        only after reading in the primary source file.

2000-03-29  Geoff Keating  <geoffk@cygnus.com>

        * c-common.c (c_common_nodes_and_builtins): The first parameter to
        __builtin_va_start and __builtin_va_copy is now either a 'va_list'
        or a reference to a va_list.
        * builtins.c (stabilize_va_list): Simplify now we don't have to
        work around C array address decay.
        * c-typeck.c (convert_for_assignment): Handle assignment to
        a reference parameter by taking the address of the RHS.
        * ginclude/stdarg.h (va_start): Don't take address of first parameter.
        (va_copy): Likewise.
        (__va_copy): Likewise.
        * ginclude/varargs.h (va_start): Likewise.
        (__va_copy): Likewise.

Wed Mar 29 15:44:53 2000  Jeffrey A Law  (law@cygnus.com)

        * i386/djgpp.h: Remove extraneous "+".

        * stmt.c (stmt_loop_nest_empty): Fix thinko in last change.

        * calls.c (expand_call): Fix typo in last change.

2000-03-29  Jason Merrill  <jason@casey.cygnus.com>

        * tree.c (unsave_expr_1): Don't mess with a TARGET_EXPR that hasn't
        been expanded.

Wed Mar 29 15:39:10 2000  Richard Kenner  <kenner@vlsi1.ultra.nyu.edu>

        * stor-layout.c (bit_from_pos, byte_from_pos): New functions.
        (pos_from_byte, pos_from_bit, normalize_offset): Likewise.
        (normalize_rli, rli_size_so_far, rli_size_unit_so_far): Use them.
        * tree.c (bit_position, byte_position): Likewise.
        * tree.h: Declare new functions.

2000-03-29  Nick Clifton  <nickc@cygnus.com>

        * config/arm/arm.c: Minor formatting changes/
        * config/arm/arm.h (SUBTARGET_EXTRA_ASM_SPEC): Define if not
        already defined.
        (ASM_SPEC): Define if not already defined.

2000-03-29  Zack Weinberg  <zack@wolery.cumb.org>

        * cppfiles.c (cpp_read_file): Don't pass zero-length string to
        _cpp_calc_hash.

2000-03-29  Jakub Jelinek  <jakub@redhat.com>

        * dwarf2out.c (gen_enumeration_type_die): If enum has a negative
        value, don't output it as unsigned.

Wed Mar 29 10:53:49 2000  Jeffrey A Law  (law@cygnus.com)

        * stmt.c (stmt_loop_nest_empty): Allow cfun->stmt to be NULL.

2000-03-29  Kaveh R. Ghazi  <ghazi@caip.rutgers.edu>

        * c-common.c (c_common_nodes_and_builtins): Don't special case
        cplus_mode when declaring builtin bzero/bcmp, always avoid
        prototype arguments.

2000-03-29  Bruce Korb  <bkorb@gnu.org>

        * fixinc/mkfixinc.sh: Initially set the variable "fixincludes"
        to a non-file

Wed Mar 29 15:08:01 MET DST 2000  Jan Hubicka  <jh@suse.cz>

        Convert ACCUMULATE_OUTGOING_ARGS to an expression.
        * calls.c (PUSH_ARGS_REVERSED) Change to expression.
        (ACCUMULATE_OUTGOING_ARGS, PUSH_ARGS): Provide default value.
        (struct arg_data): Remove #ifdef ACCUMULATE_OUTGOING_ARGS.
        (save_fixed_argument_area, restore_fixed_argument_area):
        conditionize by #ifdef REG_PARM_STACK_SPACE only.
        (emit_call): Change #ifdefs on ACCUMULATE_OUTGOING_ARGS
        to conditions, handle RETURN_POPS_ARGS on ACCUMULATE_OUTGOING_ARGS.
        (precompute_register_parameters): Avoid #ifdefs on
        ACCUMULATE_OUTGOING_ARGS and PUSH_ARGS_REVERSED.
        (stire_one_args): Likewise.
        (expand_call): Likewise; conditionize PUSH_ROUNDING code by PUSH_ARGS.
        (emit_library_call_value_1): Likewise.
        (compute_argument_block_size): Align to STACK_BOUNDARY only for
        ACCUMULATE_OUTGOING_ARGS.
        * combine.c (ACCUMULATE_OUTGOING_ARGS, PUSH_ARGS): Provide default
        value.
        (nonzero_bits): Conditionize PUSH_ROUNDING code by USE_PUSH.
        (use_crosses_set_p): Likewise.
        * all targets (ACCUMULATE_OUTGOING_ARGS define): Change to
        #define ACCUMULATE_OUTGOING_ARGS 1.
        * i386.c (ix86_compute_frame_size): Handle ACCUMULATE_OUTGOING_ARGS
        frames.
        * i386.h (MASK_NO_PUSH_ARGS, MASK_ACCUMULATE_OUTGOING_ARGS): New
        constants.
        (TARGET_PUSH_ARGS, TARGET_ACCUMULATE_OUTGOING_ARGS): New macros.
        (TARGET_SWITCHES): Add push-args, no-push-args,
        accumulate-outgoing-args and no-accumulate-outgoing-args.
        (ACCUMULATE_OUTGOING_ARGS, PUSH_ARGS): New macro.
        * expr.c (ACCUMULATE_OUTGONG_ARGS, PUSH_ARGS): Provide default.
        (push_block): Avoid ifdefs on ACCUMULATE_OUTGONG_ARGS
        and PUSH_ROUNDING.
        (emit_push_insn): Likewise.
        * final.c (ACCUMULATE_OUTGOING_ARGS): Provide default.
        (final_scan_insn): Avoid ifdefs on ACCUMULATE_OUTGOING_ARGS.
        * function.c (ACCUMULATE_OUTGOING_ARGS): Provide default.
        (STACK_DYNAMIC_OFFSET): Define correctly for both
        ACCUMULATE_OUTGOING_ARGS and normal mode.
        * invoke.texi (-mpush_args, -maccumulate-outgoing-args): Document.
        * tm.texi (PUSH_ARGS): Document.
        (ACCUMULATE_OUTGOING_ARGS, PUSH_ROUNDING): Update documentation.

Wed Mar 29 11:51:13 MET DST 2000  Jan Hubicka  <jh@suse.cz>

        * flags.h (flag_optimize_sibling_calls): Declare.
        * calls.c (expand_call): Fail sibcall when
        !flag_optimize_sibling_calls
        * invoke.texi (flag_optimize_sibling_calls): Document.
        * toplev.c (flag_optimize_sibling_calls): New global variable.
        (f_options): Add flag_optimize_sibling_calls.
        (rest_of_compilation): Conditionize
        optimize_sibling_and_tail_recursive_calls by
        flag_optimize_sibling_calls.
        (main): Set flag_optimize_sibling_calls for -O2.
        * stmt.c (expand_return): Conditionize tail recursion by
        flag_optimize_sibling_calls.

2000-03-29  Richard Henderson  <rth@cygnus.com>

        * config/i386/att.h (LOCAL_LABEL_PREFIX): Define.
        (ASM_GENERATE_INTERNAL_LABEL, ASM_OUTPUT_INTERNAL_LABEL): Use it.

2000-03-29  Nathan Sidwell  <nathan@codesourcery.com>

        * except.c (add_eh_table_entry): Mark type_info's as referenced.

2000-03-29  Alexandre Oliva  <oliva@lsd.ic.unicamp.br>

        * config/rs6000/aix41.h (CPP_SPEC): Define _ANSI_C_SOURCE if -ansi
        is given.
        * config/rs6000/aix43.h (CPP_SPEC): Likewise.
        * config/rs6000/rs6000.h (CPP_SPEC): Moved to...
        * config/rs6000/aix.h: then modified likewise.

2000-03-28  Richard Henderson  <rth@cygnus.com>

        * rtl.h: Redistribute enum reg_note documentation.
        Kill trailing whitespace.
        * rtl.c (reg_note_name): Adjust to match enum reg_note tweeks.
        Kill trailing whitespace.

2000-03-28  Zack Weinberg  <zack@wolery.cumb.org>

        * cppfiles.c (hash_IHASH): Just return i->hash.
        (cpp_included): Set dummy.hash using _cpp_calc_hash.  Use
        htab_find_with_hash.
        (cpp_read_file): Likewise.
        (find_include_file): Likewise.  Properly initialize
        ih->nshort.  Share ih->name and ih->nshort if possible.
        * cpphash.c (_cpp_calc_hash): New function.
        (hash_HASHNODE): Just return h->hash.
        (_cpp_lookup): Set dummy.hash using _cpp_calc_hash.  Use
        htab_find_with_hash.
        * cpphash.h: Prototype _cpp_calc_hash.
        * cppinit.c (initialize_builtins): Provide a valid hash
        to _cpp_make_hashnode, using _cpp_calc_hash.

        * cpphash.c (collect_expansion): # is not a special character
        in object-like macros.  In -traditional mode, /**/ is not
        token paste at the beginning or end of the line.
        * cpplib.c (do_include, do_import, do_include_next): If
        parse_include fails, return immediately.

2000-03-28  Jason Merrill  <jason@casey.cygnus.com>

        * config/arm/arm.md (return peepholes): Update to reflect the new
        call insn patterns.
        * config/arm/arm.c (arm_volatile_func): Also check
        current_function_nothrow.
        (output_return_instruction, output_func_prologue): Use it.
        (arm_output_epilogue, arm_expand_prologue): Likewise.

2000-03-27  Tom Tromey  <tromey@cygnus.com>

        * gcc.c (handle_braces): In {x*...} case, break out of loop if
        switch is found.

Tue Mar 28 11:55:48 2000  Richard Kenner  <kenner@vlsi1.ultra.nyu.edu>

        * expr.c (store_constructor): SIZE now signed.
        For EXPR_SIZE, don't evaluate size; just needed if constant.
        * fold-const.c (fold): Fix a number of cases when folded tree is
        wrong type.
        * function.c (flush_addressof): Reenable.
        * tree.h (flush_addressof): Likewise.
        * toplev.c (independent_decode_option): Look at strings_processed.
        * config/alpha/alpha.h (MINIMUM_ATOMIC_ALIGNMENT): Cast to unsigned.

Tue Mar 28 08:29:46 2000  Jan Hubicka  <jh@suse.cz>

        * sibcall.c (indentify_call_return_value): Find last call in the chain;
        Allow stack adjustment after function call.

        * regmove.c (struct csa_memlist): Make mem field rtx *.
        (record_one_stack_ref): Accept rtx * instead of rtx as parameter.
        (try_apply_stack_adjustment): Replace whole MEM rtx.
        (combine_stack_adjustments_for_block): Update calls
        to record_one_stack_ref.

2000-03-28  Neil Booth  <NeilB@earthling.net>

        * cpplex.c (_cpp_read_and_prescan): Mark end of input buffer with
        '\\' rather than a null character, so nulls are not special.  Fix
        "\\\n" handling in end-of-buffer conditions.  Use trigraph map to
        speed trigraph conversion.
        (_cpp_init_input_buffer): Initialize trigraph map.

2000-03-27  Alan Modra  <alan@linuxcare.com.au>

        * config/i386/i386.c (output_387_binary_op): Correct intel
        mode assembly output, and add spaces after commas in AT&T
        output.  Correct Unixware assembler comment.  Document input
        constraints.  Comment fp operations.  Reduce profligate buffer
        size.  Remove extraneous abort.  Localize temp var.
        (SYSV386_COMPAT): Define.  Add !SYSV386_COMPAT code.
        (output_fix_trunc): Add spaces after commas in assembly output.

2000-03-27  Richard Henderson  <rth@cygnus.com>

        * i386-protos.h (ix86_match_ccmode): Declare.
        * i386.c (ix86_match_ccmode): New.
        (ix86_expand_fp_compare): Update for pattern renames.
        (ix86_expand_strlensi_unroll_1): Likewise.
        * i386.h (EXTRA_CC_MODES): Add CCZ.
        (SELECT_CC_MODE): Use it for EQ/NE zero.
        * i386.md (cmpsi_ccz_1): New.
        (cmpqi_ccz_1): New.
        (*testsi_ccz_1): New.
        (testqi_ccz_1): New.
        (cmpsi_ccno_1): Rename from cmpsi_0.
        (testsi_ccno_1): Rename from testsi_1.
        (testqi_ccno_1): Rename from testqi_1.
        (*testqi_ext_ccz_0): Rename from testqi_ext_0.
        (testqi_ext_ccno_0): Rename from *testqi_ext_1.
        (*cmphi_0): Use ix86_match_ccmode.
        (*cmpqi_ext_2, *addsi_2, *addhi_2, *addqi_2): Likewise.
        (*subsi_2, *subhi_2, *subqi_2, *testhi_1): Likewise.
        (*testqi_ext_1, *testqi_ext_2, *testqi_ext_3): Likewise.
        (*andsi_2, *andhi_2, *andqi_2, *andqi_ext_0_cc): Likewise.
        (*iorsi_2, *iorhi_2, *iorqi_2): Likewise.
        (*xorsi_2, *xorhi_2, *xorqi_cc_1): Likewise.
        (*one_cmplsi2_2, *one_cmplhi2_2, *one_cmplqi2_2): Likewise.
        (*ashlsi3_cmpno, *ashlhi3_cmpno, *ashlqi3_cmpno): Likewise.
        (*ashrsi3_cmpno, *ashrhi3_cmpno, *ashrqi3_cmpno): Likewise.
        (*lshrsi3_cmpno, *lshrhi3_cmpno, *lshrqi3_cmpno): Likewise.
        (appropriate peepholes): Likewise.
        (*cmphi_1, *cmpqi_ccno_1, *cmpqi_1): Star out name.
        (*subsi_3, *subhi_3, *subqi_3): Remove.
        (*negdi2_1+1 splitter): Use CCZ for neg patterns.
        (*negsi2_cmp, *neghi2_cmp, *negqi2_cmp): Remove.
        (*negsi2_cmpz): Rename from *negsi2_cmpno, use CCZ.
        (*neghi2_cmpz, *negqi2_cmpz): Similarly.
        (x86_shift_adj_1): Use CCZ.
        (*dbra_ge+1, *dbra_ge+2, ffssi2, ffssi_1): Likewise.

2000-03-27  Stan Cox  <scox@cygnus.com>

        * resource.h (mark_resource_type): New.
        * resource.c (find_dead_or_set_registers, mark_target_live_regs,
        find_free_register): Use mark_resource_type.
        (mark_set_resources): Change include_delayed_effects
        to mark_resource_type.
        * reorg.c (steal_delay_list_from_target, try_merge_delay_insns,
        redundant_insn, fill_simple_delay_slots, fill_slots_from_thread):
        Use mark_resource_type.

2000-03-27  Richard Henderson  <rth@cygnus.com>

        * i386.md (call_pop_0, call_value_pop_0): New.
        (call_pop_1): Remove constraint from unused arg.  Support sibcalls.
        (call_value_pop_1): Likewise.
        (call_0, call_value_0): New.
        (call_1, call_value_1): Remove constraint from unused arg.

2000-03-27  Nick Clifton  <nickc@cygnus.com>

        * invoke.texi (Spec Files): Document new spec % command created by
        Tom Tromey's recent patch.

2000-03-27  Jakub Jelinek  <jakub@redhat.com>

        * libgcc2.h (MIN_UNITS_PER_WORD): Define to UNITS_PER_WORD
        if not defined.

Mon Mar 27 06:04:22 2000  Richard Kenner  <kenner@vlsi1.ultra.nyu.edu>

        * expr.c (expand_assignment): Fix typo in last change.

        * libgcc2.h: Use MIN_UNITS_PER_WORD, not UNITS_PER_WORD.

Sun Mar 26 20:15:26 2000  Richard Kenner  <kenner@vlsi1.ultra.nyu.edu>

        * c-convert.c (convert): Return if output or input type is ERROR_MARK.
        * c-decl.c (duplicate_decls): Only look at DECL_BUILT_IN_NONANSI
        and DECL_INLINE if FUNCTION_DECL.
        (pushdecl, redeclaration_error_message): Likewise, for DECL_INLINE.
        (store_parm_decls): Check for type of PARM_DECL being ERROR_MARK.
        Use DECL_WEAK, not DECL_RESULT, to flag for already seen.
        (combine_parm_decls): Likewise.
        * ggc-common.c (gcc_mark_tree_children, case 'd'): Use DECL_RESULT_FLD.
        * print-tree.c (print_node): Likewise.
        Only test DECL_PACKED, DECL_INLINE, DECL_BIT_FIELD, and
        DECL_TRANSPARENT_UNION on proper decl types.
        Properly handly DECL_INCOMING_RTL and DECL_SAVED_INSNS.
        * stor-layout.c (layout_decl): Only check DECL_PACKED and
        DECL_BIT_FIELD of FIELD_DECL.
        * tree.h (DECL_RESULT_FLD): New macro.

        * expr.c (expand_assignment): Add code to handle variable-sized
        BLKmode case.

2000-03-26  Richard Henderson  <rth@cygnus.com>

        * calls.c (expand_call): Pass parms not original exp to
        optimize_tail_recursion.  Mind return value instead of looking
        for a barrier.
        * stmt.c (optimize_tail_recursion): Take parameter list, not entire
        call_expr.  Move checks for call_expr and current_function_decl ...
        (expand_return): ... here.

2000-03-26  Tom Tromey  <tromey@cygnus.com>

        * gcc.c (handle_braces): Recognize `%{<S}' construct.
        (SWITCH_OK, SWITCH_FALSE, SWITCH_IGNORE, SWITCH_LIVE): New
        defines.
        (process_command): Use them.
        (check_live_switch): Likewise.
        (give_switch): Skip ignored switches.

2000-03-26  Jan Hubicka  <jh@suse.cz>

        * jump.c (jump_optimize_1): Fix typo in elide optimizations
        for minimal jump pass test.

2000-03-26  Mark Mitchell  <mark@codesourcery.com>

        * integrate.c (function_cannot_inline_p): Do inline functions that
        return `void'.

Sun Mar 26 11:37:55 2000  Richard Kenner  <kenner@vlsi1.ultra.nyu.edu>

        * stor-layout.c (layout_type, set_sizetype): early_type_list is
        now a list of TREE_LIST entries, not types.
        * tree.c (build_common_tree_nodes_2): Eliminate dupliate type sets.

        * expmed.c (extract_bit_field): Ensure BITS_PER_WORD is signed in MAX.
        * config/arm/pe.c (arm_pe_return_in_memory): Use host_integerp and
        int_bit_position.
        * config/mips/mips.c (function_arg): Likewise; also remove cast
        and make variables unsigned or HOST_WIDE_INT and use tree_low_cst.
        (mips_function_value): Use int_byte_position and make HOST_WIDE_INT.
        * config/mips/abi64.h (SETUP_INCOMING_VARARGS): Offsets are unsigned.
        * config/mips/mips.h (BITS_PER_WORD, UNITS_PER_WORD): Cast to unsigned.
        (UNITS_PER_FPREG, INT_TYPE_SIZE, LONG_TYPE_SIZE): Likewise.
        (POINTER_SIZE, POINTER_BOUNDARY,PARM_BOUNDARY): Likewise.
        (GP_REG_P, FP_REG_P, MD_REG_P, ST_REG_P): Ensure subtraction signed.
        (struct mips_arg): arg_number, arg_words, fp_arg_words, and
        num_adjusts now unsigned.
        (FUNCTION_ARG_BOUNDARY): Remove unneeded cast.
        * config/sparc/sparc.c (struct function_arg_record_value_parms):
        NREGS now unsigned.
        (function_arg_record_value_1): STARTBITPOS arg now HOST_WIDE_INT
        as is BITPOS variable; use host_integerp and int_bit_position.
        (function_arg_record_value_2): Likewise.
        (function_arg_record_value_3): Arg BITPOS now HOST_WIDE_INT.
        Variable REGNO now unsigned.
        (function_arg_record_value): NREGS now unsigned.

2000-03-26  Bernd Schmidt  <bernds@cygnus.co.uk>

        * jump.c (mark_all_labels): Handle CALL_PLACEHOLDERs.

Sat Mar 25 09:12:10 2000  Richard Kenner  <kenner@vlsi1.ultra.nyu.edu>

        * Rework fields used to describe positions of bitfields and
        modify sizes to be unsigned and use HOST_WIDE_INT.
        * alias.c (reg_known_value_size): Now unsigned.
        * c-typeck.c (build_unary_op, case ADDR_EXPR): Use byte_position.
        (really_start_incremental_init): Use bitsize_zero_node.
        (push_init_level, pop_init_level, output_init_element): Likewise.
        Use bitsize_unit_node and bitsize_one_node.
        (output_pending_init_elements, process_init_element): Likewise.
        * combine.c (combine_max_regno, reg_sign_bit_copies): Now unsigned.
        (make_extraction): Position and length HOST_WIDE_INT and unsigned
        HOST_WIDE_INT, respectively.
        (get_pos_from_mask): Passed in value is unsigned HOST_WIDE_INT.
        (num_sign_bit_copies): Returns unsigned.
        BITWIDTH now unsigned; rework arithmetic.
        Remove recursive call from arg to MAX.
        (combine_instructions, init_reg_last_arrays): NREGS now unsigned.
        (setup_incoming_promotions, can_combine_p, try_combine, simplify_set):
        REGNO now unsigned.
        (set_nonzero_bit_and_sign_copies): NUM now unsigned.
        (find_split_point, expand_compound_operation, make_extraction): LEN
        now unsigned HOST_WIDE_INT, POS now HOST_WIDE_INT.
        (make_field_assignment): Likewise.
        (combine_simplify_rtx): Add cast.
        (expand_compound_operation): MODEWIDTH now unsigned; rework arithmetic.
        (force_to_mode): WIDTH now unsigned; add cast.
        (if_then_else_cond): SIZE now unsigned.
        (nonzero_bits): MODE_WIDTH, RESULT_WIDTH, and WIDTH now unsigned.
        (extended_count): Now returns unsigned.
        (simplify_shift_const): COUNT unsigned; arg is now INPUT_COUNT.
        Add SIGNED_COUNT variable; MODE_WORDS and FIRST_COUNT now unsigned.
        (simplify_comparison): MODE_WIDTH now unsigned.
        (update_table_tick): REGNO and ENDREGNO now unsigned; new var R.
        (mark_used_regs_combine): Likewise; rework arithmetic.
        (record_value_for_reg): REGNO, ENDREGNO, and I now unsigned.
        (record_dead_and_set_regs, reg_dead_at_p, distribute_notes): Likewise.
        (record_promoted_value): REGNO now unsigned.
        (get_last_value_validate): REGNO, ENDREGNO, and J now unsigned.
        (get_last_value): REGNO now unsigned.
        (use_crosses_set_p): REGNO and ENDREGNO now unsigned.
        (reg_dead_regno, reg_dead_endregno): Now unsigned.
        (remove_death): Arg REGNO now unsigned.
        (move_deaths):  REGNO, DEADREGNO, DEADEND, OUREND, and I now unsigned.
        (reg_bitfield_target_p): REGNO, REGNO, ENDREGNO, and ENDTREGNO
        now unsigned.
        * convert.c (convert_to_integer): INPREC and OUTPREC now unsigned.
        * cse.c (struct qty_table_elem): FIRST_REG and LAST_REG now unsigned.
        (struct cse_reg_info): REGNO now unsigned.
        (cached_regno): Now unsigned.
        (REGNO_QTY_VALID_P): Add cast.
        (make_new_qty, make_regs_eqv, delete_reg_eqiv): Regno args unsigned.
        (remove_invalid_regs): Likewise.
        (remove_invalid_subreg_refs): Likewise; arg WORD also unsigned
        as are variables END and I.
        (get_cse_reg_info, insert): Likewise.
        (mention_regs, invalidate_for_call): REGNO, ENDREGNO, and I unsigned.
        (canon_hash): Likewise.
        (insert_regs, lookup_for_remove): REGNO now unsigned.
        (invalidate): REGNO, ENDREGNO, TREGNO, and TENDREGNO now unsigned.
        New variable RN.
        * dbxout.c (dbxout_parms, dbxout_reg_parms): Don't check for REGNO < 0.
        * dwarf2out.c (dwarf2ou_frame_debug_expr): Remove cast.
        * emit-rtl.c (subreg_realpart_p): Add cast.
        (operand_subword): Arg I is now unsigned as is var PARTWORDS.
        (operand_subword_force): Arg I is now unsigned.
        * except.c (eh_regs): Variable I is now unsigned.
        * explow.c (hard_function_value): BYTES is unsigned HOST_WIDE_INT.
        * expmed.c (store_fixed_bit_field): Position is HOST_WIDE_INT;
        length is unsigned HOST_WIDE_INT; likewise for internal variables.
        (store_split_bit_field, extract_fixed_bit_field): Likewise.
        (extract_split_bit_field, store_bit_field, extract_bit_field):
        Likewise.
        * expr.c (store_constructor_fields, store_constructor, store_field):
        Positions are HOST_WIDE_INT and lengths are unsigned HOST_WIDE_INT.
        (expand_assignment, expand_expr, expand_expr_unaligned): Likewise.
        (do_jump): Likewise.
        (move_by_pieces, move_by_pieces_ninsns, clear_by_pieces):
        MAX_SIZE is now unsigned.
        (emit_group_load): BYTEPOS is HOST_WIDE_INT; BYTELEN is unsigned.
        (emit_group_store): Likewise.
        (emit_move_insn): I now unsigned.
        (store_constructor): Use host_integerp, tree_low_cst, and
        bitsize_unit_node.
        (get_inner_reference): Return bitpos and bitsize as HOST_WIDE_INT.
        Rework all calculations to use trees and new fields.
        * expr.h (promoted_input_arg): Regno now unsigned.
        (store_bit_field, extract_bit_field): Adjust types of pos and size.
        (mark_seen_cases): Arg is HOST_WIDE_INT.
        * flow.c (verify_wide_reg_1): REGNO now unsigned.
        * fold-const.c (decode_field_reference): Size and pos HOST_WIDE_INT;
        precisions and alignments are unsigned.
        (optimize_bit_field_compare, fold_truthop): Likewise.
        (int_const_binop): Adjust threshold for size_int_type_wide call.
        (fold_convert): Likewise.
        (size_int_type_wide): Make table larger and fix thinko that only
        had half of table used.
        (all_ones_mask_p, fold): Precisions are unsigned.
        * function.c (put_reg_info_stack): REGNO is unsigned.
        (instantiate_decl): Size is HOST_WIDE_INT.
        (instantiate_virtual_regs): I is unsigned.
        (assign_parms): REGNO, REGNOI, and REGNOR are unsigned.
        (promoted_input_arg): REGNO is unsigned.
        * function.h (struct function): x_max_parm_reg is now unsigned.
        * gcse.c (max_gcse_regno): Now unsigned.
        (struct null_pointer_info): min_reg and max_reg now unsigned.
        (lookup_set, next_set): REGNO arg now unsigned.
        (compute_hash_table): REGNO and I now unsigned.
        (handle_avail_expr): regnum_for_replacing now unsigned.
        (cprop_insn): REGNO now unsigned.
        (delete_null_pointer_checks_1): BLOCK_REG now pointer to unsigned.
        * ggc-common.c (ggc_mark_tree_children, case FIELD_DECL): New case.
        * global.c (set_preference): SRC_REGNO, DEST_REGNO, and I now unsigned.
        * hard-reg-set.h (reg_class_size): Now unsigned.
        * integrate.c (mark_stores): LAST_REG and I now unsigned; new UREGNO.
        * jump.c (mark_modified_reg): I now unsigned; add cast.
        (rtx_equal_for_thread_p): Add cast.
        * loop.c (max_reg_before_loop): Now unsigned.
        (struct_movable): REGNO now unsigned.
        (try_copy_prop): REGNO arg unsigned.
        (regs_match_p): XN and YN now unsigned.
        (consec_sets_invariant_p, maybe_eliminate_biv): REGNO now unsigned.
        (strength_reduce): Likewise; NREGS also unsigned.
        (first_increment_giv, last_increment_giv unsigned): Now unsigned.
        * loop.h (struct iv_class): REGNO now unsigned.
        (max_reg_before_loop, first_increment_giv, last_increment_giv):
        Now unsigned.
        * machmode.h (mode_size, mode_unit_size): Now unsigned.
        (mode_for_size, smallest_mode_for_size): Pass size as unsigned.
        * optabs.c (expand_binop): I and NWORDS now unsigned.
        (expand_unop): I now unsigned.
        * print-tree.c (print_node): Don't print DECL_FIELD_BITPOS, but do
        print DECL_FIELD_OFFSET and DECL_FIELD_BIT_OFFSET.
        * real.c (significand_size): Now returns unsigned.
        * real.h (significand_size): Likewise.
        * regclass.c (reg_class_size): Now unsigned.
        (choose_hard_reg_mode): Both operands now unsigned.
        (record_reg_classes): REGNO and NR now unsigned.
        (reg_scan): NREGS now unsigned.
        (reg_scan_update): old_max_regno now unsigned.
        (reg_scan_mark_refs): Arg MIN_REGNO and var REGNO now unsigned.
        * reload.c (find_valid_class): BEST_SIZE now unsigned.
        (find_dummy_reload): REGNO, NWORDS, and I now unsigned.
        (hard_reg_set_here_p): Args BEG_REGNO and END_REGNO now unsigned.
        Likewise for variable R.
        (refers_to_regno_for_reload_p): Args REGNO and END_REGNO now unsigned,
        as are variables INNER_REGNO and INNER_ENDREGNO; add new variable R.
        (find_equiv_reg): Add casts.
        (regno_clobbered_p): Arg REGNO now unsigned.
        * reload.h (struct reload): NREGS now unsigned.
        (refers_to_regno_for_reload_p): Regno args are unsigned.
        (regno_clobbered_p): Likewise.
        * reload1.c (reg_max_ref_width, spill_stack_slot_width): Now unsigned.
        (compute_use_by_pseudos): REGNO now unsigned.
        (find_reg): I and J now unsigned, new variable K, and change loop
        variables accordingly; THIS_NREGS now unsigned.
        (alter_reg): INHERENT_SIZE and TOTAL_SIZE now unsigned.
        (spill_hard_reg): REGNO arg now unsigned; add casts.
        (forget_old_reloads_1): REGNO, NR, and I now unsigned.
        (mark_reload_reg_in_use): Arg REGNO and vars NREGS and I now unsigned.
        (clear_reload_reg_in_use): Arg REGNO and vars NREGS, START_REGNO,
        END_REGNO, CONFLICT_START, and CONFLICT_END now unsigned.
        (reload_reg_free_p, reload_reg_reaches_end_p): Arg REGNO now unsigned.
        (choose_reload_regs): MAX_GROUP_SIZE now unsigned.
        (emit_reload_insns): REGNO now unsigned.
        (reload_cse_move2add): Add cast.
        (move2add_note_store): REGNO and I now unsigned; new variable ENDREGNO
        and rework loop.
        * resource.c (mark_referenced_resources, mark_set_resources): New
        variable R; REGNO and LAST_REGNO now unsigned.
        (mark_target_live_regs): J and REGNO now unsigned.
        * rtl.c (mode_size, mode_unit_size): Now unsigned.
        * rtl.h (union rtunion_def): New field rtuint.
        (XCUINT): New macro.
        (ADDRESSOF_REGNO, REGNO, SUBREG_WORD): New XCUINT.
        (operand_subword, operand_subword_force): Word number is unsigned.
        (choose_hard_reg_mode): Operands are unsigned.
        (refers_to-regno_p, dead_or_set_regno_p): Regno arg is unsigned.
        (find_regno_note, find_regno_fusage, replace_regs): Likewise.
        (regno_use_in, combine_instructions, remove_death): Likewise.
        (reg_scan, reg_scan_update): Likewise.
        (extended_count): Return is unsigned.
        * rtlanal.c (refers_to_regno_p): Args REGNO and ENDREGNO and vars I,
        INNER_REGNO, and INNER_ENDREGNO now unsigned; new variable X_REGNO.
        (reg_overlap_mentioned_p): REGNO and ENDREGNO now unsigned.
        (reg_set_last_first_regno, reg_set_last_last_regno): Now unsigned.
        (reg_reg_last_1): FIRS and LAST now unsigned.
        (dead_or_set_p): REGNO, LAST_REGNO, and I now unsigned.
        (dead_or_set_regno_p): Arg TEST_REGNO and vars REGNO and ENDREGNO
        now unsigned.
        (find_regno_note, regno_use_in): Arg REGNO now unsigned.
        (find_regno_fusage): Likewise; also var REGNOTE now unsigned.
        (find_reg_fusage): Variables REGNO, END_REGNO, and I now unsigned.
        (replace_regs): Arg NREGS now unsigned.
        * sdbout.c (sdbout_parms, sdbout_reg_parms): Don't check REGNO < 0.
        * simplify-rtx.c (simplify_unary_operation): WIDTH now unsigned.
        (simplify_binary_operation): Likewise.
        (cselib_invalidate_regno): Arg REGNO and variables ENDREGNO, I, and
        THIS_LAST now unsigned.
        (cselib_record_set): Add cast.
        * ssa.c (ssa_max_reg_num): Now unsigned.
        (rename_block): REGNO now unsigned.
        * stmt.c (expand_return): Bit positions unsigned HOST_WIDE_INT;
        sizes now unsigned.
        (all_cases_count): Just return -1 not -2.
        COUNT, MINVAL, and LASTVAL now HOST_WIDE_INT.
        Rework tests to use trees whenever possible.
        Use host_integerp and tree_low_cst.
        (mark_seen_cases): COUNT arg now HOST_WIDE_INT;
        Likewise variable NEXT_NODE_OFFSET; XLO now unsigned.
        (check_for_full_enumeration_handing): BYTES_NEEDED, I to HOST_WIDE_INT.
        * stor-layout.c (mode_for_size): SIZE arg now unsigned.
        (smallest_mode_for_size): Likewise.
        (layout_decl): Simplify handing of a specified DECL_SIZE_UNIT.
        KNOWN_ALIGN is now an alignment, so simplify code.
        Don't turn off DECL_BIT_FIELD if field is BLKmode, but not type.
        (start_record_layout): Renamed from new_record_layout_info.
        Update to new fields.
        (debug_rli, normalize_rli, rli_size_unit_so_far, rli_size_so_far):
        New functions.
        (place_union_field): Renamed from layout_union_field.
        Update to use new fields in rli.
        (place_field): Renamed from layout_field.
        Major rewrite to use new fields in rli; pass alignment to layout_decl.
        (finalize_record_size): Rework to use new fields in rli and handle
        union.
        (compute_record_mode): Rework to simplify and to use new DECL fields.
        (finalize_type_size): Make rounding more consistent.
        (finish_union_layout): Deleted.
        (layout_type, case VOID_TYPE): Don't set TYPE_SIZE_UNIT either.
        (layout_type, case RECORD_TYPE): Call new function names.
        (initialize_sizetypes): Set TYPE_IS_SIZETYPE.
        (set_sizetype): Set TYPE_IS_SIZETYPE earlier.
        (get_best_mode): UNIT is now unsigned; remove casts.
        * tree.c (bit_position): Compute from new fields.
        (byte_position, int_byte_position): New functions.
        (print_type_hash_statistics): Cast to remove warning.
        (build_range_type): Use host_integerp and tree_low_cst to try to hash.
        (build_index_type): Likewise; make subtype of sizetype.
        (build_index_2_type): Pass sizetype to build_range_type.
        (build_common_tree_nodes): Use size_int and bitsize_int to
        initialize nodes; add bitsize_{zero,one,unit}_node.
        * tree.h (DECL_FIELD_CONTEXT): Use FIELD_DECL_CHECK.
        (DECL_BIT_FIELD_TYPE, DECL_QUALIFIER, DECL_FCONTEXT): Likewise.
        (DECL_PACKED, DECL_BIT_FIELD): Likewise.
        (DECL_FIELD_BITPOS): Deleted.
        (DECL_FIELD_OFFSET, DECL_FIELD_BIT_OFFSET): New fields.
        (DECL_RESULT, DECL_SAVED_INSNS): Use FUNCTION_DECL_CHECK.
        (DECL_FRAME_SIZE, DECL_FUNCTION_CODE, DECL_NO_STATIC_CHAIN): Likewise.
        (DECL_INLINE, DECL_BUILT_IN_NONANSI, DECL_IS_MALLOC): Likewise.
        (DECL_BUILT_IN_CLASS, DECL_STATIC_CONSTRUCTOR): Likewise.
        (DECL_STATIC_DESTRUCTOR, DECL_NO_CHECK_MEMORY_USAGE): Likewise.
        (DECL_NO_INSTRUMENT_FUNCTION_ENTRY_EXIT, DECL_NO_LIMIT_STACK) Likewise.
        (DECL_ORIGINAL_TYPE, TYPE_DECL_SUPPRESS_DEBUG): Use TYPE_DECL_CHECK.
        (DECL_ARG_TYPE_AS_WRITEN, DECL_ARG_TYPE): Use PARM_DECL_CHECK.
        (DECL_INCOMING_RTL, DECL_TRANSPARENT_UNION): Likewise.
        (DECL_ALIGN): Adjust to new field in union.
        (DECL_OFFSET_ALIGN): New field.
        (DECL_ERROR_ISSUED, DECL_TOO_LATE): Use LABEL_DECL_CHECK.
        (DECL_IN_TEXT_SECTION): Use VAR_DECL_CHECK.
        (union tree_decl): Add struct for both aligns.
        (enum tree_index): Add TI_BITSIZE_{ZERO,ONE,UNIT}.
        (bitsize_zero_node, bitsize_one_node, bitsize_unit_node): Added.
        (struct record_layout_info): Rework fields to have offset
        alignment and byte and bit position.
        (start_record_layout, place_field): Renamed from old names.
        (rli_size_so_far, rli_size_unit_so_far, normalize_rli): New decls.
        (byte_position, int_byte_position): Likewise.
        (get_inner_reference): Change types of position and length.
        * unroll.c (unroll_loop): New variable R; use for some loops.
        MAX_LOCAL_REGNUM and MAXREGNUM now unsigned.
        (calculate_giv_inc): Arg REGNO now unsigned.
        (copy_loop_body): REGNO and SRC_REGNO now unsigned.
        * varasm.c (assemble_variable): Clean up handling of size using
        host_integerp and tree_low_cst.
        (decode_addr_const): Use byte, not bit, position.
        (output_constructor): bitpos and offsets are HOST_WIDE_INT;
        use tree_low_cst and int_bit_position.
        * objc/objc-act.c (build_ivar_list_initializer): Use byte_position.

Fri Mar 24 20:13:49 2000  Jason Eckhardt  <jle@cygnus.com>

        * bb-reorder.c (REORDER_MOVED_BLOCK_END): Removed.
        (reorder_block_def): New members eff_head and eff_end.
        (REORDER_BLOCK_EFF_HEAD, REORDER_BLOCK_EFF_END): New macros.
        (verify_insn_chain): New function.
        (skip_insns_between_block): Add code to skip deleted insns.
        Check for note before using.
        (chain_reorder_blocks): Replace calls to skip_insns_between_block
        with references to REORDER_BLOCK_EFF_HEAD and REORDER_BLOCK_EFF_END.
        Check for note before using.
        (make_reorder_chain): Use INTVAL rather than XINT to get REG_BR_PROB.
        (fixup_reorder_chain): Restructure, clean up, defect removal.
        (reorder_basic_blocks): Remove last_insn and references to it.
        Moved insn chain verification code into a new function (see above).
        Delete defective code that sets last insn.
        Initialize REORDER_BLOCK_EFF_HEAD and REORDER_BLOCK_EFF_END for
        all blocks.

2000-03-25  Michael Hayes  <m.hayes@elec.canterbury.ac.nz>

        * config/c4x/c4x.h (CPP_SPEC): Remove erroneous space.

2000-03-24  Richard Henderson  <rth@cygnus.com>

        * tree.c (lang_safe_for_unsave): Remove.
        (unsafe_for_reeval): Transmute and rename from safe_for_unsave,
        allowing for two levels of unsafeness.  Remove lang hook.
        * tree.h: Update declarations.
        * calls.c (expand_call): Rename safe_for_reeval to try_tail_call.
        Create temporary VAR_DECLs to protect very unsafe_for_reeval trees.
        Always fail sibcalls when there are pending cleanups.

2000-03-24  Geoff Keating  <geoffk@cygnus.com>

        * flow.c (propagate_block): When we delete an ADDR_VEC,
        also delete the BARRIER following it if there is one.

2000-03-24  Richard Henderson  <rth@cygnus.com>

        * builtins.c (expand_builtin_bzero): Convert `length' argument
        to sizetype.

2000-03-24  Jakub Jelinek  <jakub@redhat.com>

        * sibcall.c (skip_copy_to_return_value): Use OUTGOING_REGNO for
        comparison if regno's are equal.
        * calls.c (initialize_argument_informat): Add ecf_flags argument.
        Use FUNCTION_INCOMING_ARG if available and ECF_SIBCALL.
        (expand_call): Update caller.
        Avoid making a sibling call if argument size of the callee is larger
        than argument size of the caller.
        Call hard_function_value with outgoing set if in sibcall pass.
        Use FUNCTION_INCOMING_ARG if available and ECF_SIBCALL.

        * final.c (permitted_reg_in_leaf_functions, only_leaf_regs_used):
        Change LEAF_REGISTERS from an array initializer to actual array
        identifier. Move static global variable into the function.
        (leaf_function_p): Allow SIBLING_CALL_P calls even outside of
        sequences for leaf functions.
        * global.c (global_alloc): Likewise.
        * tm.texi (LEAF_REGISTERS): Update documentation.

        * config/sparc/sparc.h (CONDITIONAL_REGISTER_USAGE): Remove the ugly
        TARGET_FLAT leaf disabling hack.
        (LEAF_REGISTERS): Changed from an array initializer to actual array
        identifier to avoid duplication and remove the above hack.
        (FUNCTION_OK_FOR_SIBCALL): Define.
        * config/sparc/sparc.md (sibcall): New attr type. Use it almost
        always like call attribute.
        (eligible_for_sibcall_delay): New attribute.
        (sibcall): New delay type.
        (sibcall, sibcall_value, sibcall_epilogue): New expands.
        (sibcall_symbolic_sp32, sibcall_symbolic_sp64,
        sibcall_value_symbolic_sp32, sibcall_value_symbolic_sp64): New insns.
        * config/sparc/sparc.c (sparc_leaf_regs): New array.
        (eligible_for_sibcall_delay, output_restore_regs, output_sibcall):
        New functions.
        (output_function_epilogue): Move part of the code into
        output_restore_regs.
        (ultra_code_from_mask, ultrasparc_sched_reorder): Handle
        TYPE_SIBCALL.
        * sparc-protos.h (output_sibcall, eligible_for_sibcall_delay): New
        prototypes.

        * config/sparc/sparc.h (REVERSIBLE_CC_MODE): Revert Jan, 25 change
        until infrastructure is finished.

Fri Mar 24 13:49:45 2000  Jeffrey A Law  (law@cygnus.com)

        * integrate.c (save_for_inline_nocopy): Clear in_nonparm_insns here.
        (save_parm_insns): Not here.

2000-03-24  Kaveh R. Ghazi  <ghazi@caip.rutgers.edu>

        * builtins.c (expand_builtin_bzero): New function.
        (expand_builtin): Handle bzero.

        * builtins.def: Add BUILT_IN_BZERO.

        * c-common.c (c_common_nodes_and_builtins): Provide builtin
        prototype & function for bzero.

2000-03-23  Michael Meissner  <meissner@redhat.com>

        * config/alpha/alpha.md (TF floating point insns): Undo 2000-03-21
        change adding TARGET_FP to the TF floating point insns, except for
        trunctfsf2, which generates direct calls to truncdfsf2.

2000-03-23  Geoff Keating  <geoffk@cygnus.com>

        * config/rs6000/rs6000.h (ARG_POINTER_CFA_OFFSET): New definition,
        try to protect against middle-end changes that break binary
        compatibility.
        (DWARF_FRAME_REGISTERS): New definition, likewise for backend.

2000-03-24  Michael Hayes  <m.hayes@elec.canterbury.ac.nz>

        * config/c4x/c4x.md (load_immed_address):  Add DP reg clobber.

Thu Mar 23 17:10:48 2000  Richard Kenner  <kenner@vlsi1.ultra.nyu.edu>

        * calls.c (expand_call): If TARGET is passed by reference and
        is readonly, write a CLOBBER.

2000-03-23  Kaveh R. Ghazi  <ghazi@caip.rutgers.edu>

        * builtins.c (expand_builtin): Handle bcmp.

        * builtins.def: Add BUILT_IN_BCMP.

        * c-common.c (c_common_nodes_and_builtins): Provide builtin
        prototype & function for bcmp.

Thu Mar 23 11:34:39 2000  Jim Wilson  <wilson@cygnus.com>

        * config/ia64/ia64.c (rtx_needs_barrier, case UNSPEC): Move case 6...
        (rtx_needs_barrier, case UNSPEC_VOLATILE): to here.
        * config/ia64/ia64.md (pr_restore): Change UNSPEC to UNSPEC_VOLATILE.

Thu Mar 23 16:04:40 2000  Andrew Haley  <aph@cygnus.com>

        * config/mips/mips.md (movdf_internal1a): Delete (set 'f', 'F')
        alternative when using -fp64 -gp32.

2000-03-22  Jason Merrill  <jason@casey.cygnus.com>

        * config/rs6000/rs6000.h (DWARF_FRAME_RETURN_COLUMN): Define.
        * config/alpha/alpha.h (DWARF_FRAME_RETURN_COLUMN): Define.
        * config/sparc/sparc.h (DWARF_FRAME_RETURN_COLUMN): Define.

        * frame.h (frame_state): Revert last change.
        * frame.c (execute_cfa_insn): Just don't record the save of a CFA reg.
        * libgcc2.c (throw_helper): Revert last change.

2000-03-22  Richard Henderson  <rth@cygnus.com>

        * stmt.c (expand_asm_operands): Don't promote the temporary.

2000-03-22  Theodore Papadopoulo <Theodore.Papadopoulo@sophia.inria.fr>

        * builtin.c (get_pointer_alignment): Use DECL_P and TYPE_P macros.
        * c-common.c (decl_attributes,check_format_info,truthvalue_conversion,
          c_get_alias_set): Likewise.
        * c-decl.c (duplicate_decls): Likewise.
        * c-typeck.c (default_conversion,build_unary_op): Likewise.
        * calls.c (initialize_argument_information): Likewise.
        * dwarf2out.c (decl_class_context,add_abstract_origin_attribute):
        Likewise.
        * dwarfout.c (decl_class_context,output_type): Likewise.
        * expr.c (get_inner_reference): Likewise.
        * fold-const.c (simple_operand_p,fold): Likewise.
        * function.c (aggregate_value_p): Likewise.
        * stmt.c (expand_asm_operands): Likewise.
        * varasm.c (named_section): Likewise.

2000-03-22  Jason Merrill  <jason@casey.cygnus.com>

        Implement dwarf2 exception handling for the ARM.
        * config/arm/arm.h (INCOMING_RETURN_ADDR_RTX): Define.
        (DWARF_FRAME_RETURN_COLUMN): Define.
        * config/arm/arm.c (emit_multi_reg_push): Return rtx.  Attach
        REG_FRAME_RELATED_EXPR note.
        (emit_sfm): Likewise.
        (arm_expand_prologue): Set RTX_FRAME_RELATED_P on everything.
        * dwarf2out.c (reg_save): Handle saving a register to itself.
        (dwarf2out_frame_debug_expr): Handle an intermediate cfa reg.
        * except.c (eh_regs): Don't use the static chain reg if it's
        callee-saved.
        * frame.h (frame_state): Add cfa_saved field.
        * frame.c (execute_cfa_insn): Set it.
        * libgcc2.c (throw_helper): Don't adjust sp if it's restored in
        the epilogue.
        * function.c (ARG_POINTER_CFA_OFFSET): Default to FIRST_PARM_OFFSET.
        Now takes a parm.
        (instantiate_virtual_regs): Adjust.
        * tm.texi: Adjust.
        * config/m68k/m68k.h (ARG_POINTER_CFA_OFFSET): Don't define.
        * config/ns32k/ns32k.h (ARG_POINTER_CFA_OFFSET): Don't define.
        * config/sparc/sparc.h (ARG_POINTER_CFA_OFFSET): Take a parm.

        * dwarf2out.c (reg_number): Refer to FIRST_PSEUDO_REGISTER.
        (initial_return_save): Use DWARF_FRAME_REGNUM, not reg_number.

2000-03-22  Kaveh R. Ghazi  <ghazi@caip.rutgers.edu>

        * builtins.def: New file.

        * Makefile.in (TREE_H): Depend on builtins.def.

        * builtins.c (built_in_names): Use builtins.def.

        * tree.h (built_in_function): Likewise.

2000-03-22  Mark Mitchell  <mark@codesourcery.com>

        * tree.c (size_in_bytes): Return size_zero_node, not
        integer_zero_node.

2000-03-22  Geoff Keating  <geoffk@cygnus.com>

        * config/fp-bit.c (pack_d): Correct the case when a denormal
        is rounded up and stops being denormal.

2000-03-21  Richard Henderson  <rth@cygnus.com>

        * config/alpha/alpha.c (function_arg): Check for void_type_node
        before using MUST_PASS_IN_STACK.

2000-03-21  Stephane Carrez  <stcarrez@worldnet.fr>

        * regmove.c (combine_stack_adjustments_for_block): Check that
        the stack pointer is a valid memory address.

Wed Mar 22 11:44:50 MET 2000  Jan Hubicka  <jh@suse.cz>

        * calls.c: re-install Mar 16 emit_library_call merge.

2000-03-21  Jakub Jelinek  <jakub@redhat.com>

        * config/sparc/sparc.c (mem_min_alignment): If not optimizing,
        we cannot be sure that if reload_completed base register will
        be properly aligned.

2000-03-21  Richard Henderson  <rth@cygnus.com>

        * flow.c (delete_block): Fix typo last change.

2000-03-21  Mark Mitchell  <mark@codesourcery.com>

        * c-common.c (c_expand_expr_stmt): Use COMPLETE_TYPE_OR_VOID_P,
        not COMPLETE_TYPE_P, to check the type of the expression.

2000-03-21  Michael Meissner  <meissner@redhat.com>

        * config/alpha/alpha.md (floating point insns): Add TARGET_FP to
        all floating point insns that just tested the macro
        TARGET_HAS_XFLOATING_LIBS.
        (movsf/movdf recognizers): Add separate insns if -mno-fp-regs is
        used to only use the gprs.

2000-03-21  Nathan Sidwell  <nathan@codesourcery.com>

        * tree.h (COMPLETE_TYPE_P): New macro.
        (COMPLETE_OR_VOID_TYPE_P): New macro.
        (COMPLETE_OR_UNBOUND_ARRAY_TYPE_P): New macro.
        * stor-layout.c (layout_type, case VOID_TYPE): Don't set TYPE_SIZE.
        * c-aux-info.c (gen_type): Use them.
        * c-common.c (c_expand_expr_stmt): Likewise.
        * c-decl.c (poplevel, pushdecl, start_decl, finish_decl,
        grokdeclarator, grokparms, finish_struct, start_function,
        store_parm_decls, combine_parm_decls): Likewise.
        * c-parse.y (cast_expr): Likewise.
        * c-typeck.c (require_complete_type, c_sizeof, c_sizeof_nowarn,
        c_size_in_bytes, c_alignof, build_component_ref,
        build_indirect_ref, build_array_ref, convert_arguments,
        build_binary_op, pointer_diff, build_unary_op, digest_init: Likewise.
        * calls.c (initialize_argument_information): Likewise.
        * convert.c (convert_to_integer): Likewise.
        * dbxout.c (dbxout_typedefs, dbxout_type, dbxout_symbol): Likewise.
        * dwarfout.c (location_or_const_value_attribute,
        output_enumeration_type_die, output_structure_type_die,
        output_union_type_die, output_type): Likewise.
        * expr.c (safe_from_p, expand_expr): Likewise.
        * function.c (assign_parms): Likewise.
        * sdbout.c (sdbout_symbol, sdbout_one_type): Likewise.
        * tree.c (build_array_type, build_function_type,
        build_method_type, build_offset_type, build_complex_type): Likewise.
        * c-parse.c, c-parse.h: Regenerated.

2000-03-21  Michael Hayes  <m.hayes@elec.canterbury.ac.nz>

        * config/c4x/rtems.h: Include config/rtems.h.

Tue Mar 21 09:24:00 2000  Denis Chertykov  <denisc@overta.ru>

        * config/avr/avr.c (encode_section_info): sets SYMBOL_REF_FLAG if
        decl is a FUNCTION_DECL

Mon Mar 20 19:53:53 2000  Jim Wilson  <wilson@cygnus.com>

        * config/ia64/ia64.c (ia64_expand_prologue): Don't abort if leaf
        function uses output registers.  Don't save RP for leaf functions.
        Do save RP even if no epilogue.
        * config/ia64/ia64.h (FIXED_REGISTERS): Unmark in/out registers.
        (CALL_USED_REGISTERS): Unmark in registers.
        (REG_ALLOC_ORDER): Move out regs up, to near the top.  Move in regs up,
        to near the middle.

2000-03-20  Geoff Keating  <geoffk@cygnus.com>

        * config/rs6000/rs6000.md (bunordered): New expander.
        (bordered): New expander.
        (buneq): New expander.
        (bunge): New expander.
        (bungt): New expander.
        (bunle): New expander.
        (bunlt): New expander.
        (bltgt): New expander.

        * config/rs6000/rs6000.c (ccr_bit): Handle unordered comparisons.
        (ccr_bit_negated_p): New function.
        (print_operand): For %C, generate appropriate cror for UNEQ,
        UNLT, UNGT, and LTGT.  For %T and %t, use ccr_bit_negated_p.

2000-03-20  Andreas Jaeger  <aj@suse.de>

        * sdbout.c (sdbout_one_type): Add braces to avoid "ambigous else"
        warning.

        * tree.h (safe_for_unsave): Prototype.

2000-03-20  Richard Henderson  <rth@cygnus.com>

        * regmove.c (stack_memref_p): Fix typo, reorg for readability.
        (combine_stack_adjustments_for_block): Don't allow sp references
        in the side of a set we're not fixing up.
        * toplev.c (rest_of_compilation): Run combine_stack_adjustments
        after life_analysis.

2000-03-20  Richard Henderson  <rth@cygnus.com>

        * calls.c (expand_call): Don't bother generating tail call
        sequences if there are pending cleanups.  Use
        expand_start_target_temps/expand_end_target_temps to elide
        cleanups created during sibcall expansion.

2000-03-20  Geoff Keating  <geoffk@cygnus.com>

        * configure.in: Set $IFS to a value if it doesn't already have one
        in the --enable-checking handling.
        * configure: Regenerate.

2000-03-20  Martin v. Löwis  <loewis@informatik.hu-berlin.de>

        * c-parse.in (SAVE_WARN_FLAGS): Use size_int.
        * c-parse.y, c-parse.c, objc/objc-parse.y, objc/objc-parse.c:
        Regenerated.

Mon Mar 20 11:43:15 MET 2000  Jan Hubicka  <jh@suse.cz>

        * jump.c (delete_noop_moves): Remove code attempting to
        combine stack adjustments.

2000-03-19  Martin v. Löwis  <loewis@informatik.hu-berlin.de>

        * emit-rtl.c (push_to_full_sequence, end_full_sequence): New functions.
        * except.c (emit_cleanup_handler): Use them.
        (expand_end_all_catch): Likewise.
        * function.c (fixup_var_refs): Likewise.
        (expand_function_end): Clear catch_clauses_last.
        * rtl.h (push_to_full_sequence, end_full_sequence): Declare.
        * except.h (struct eh_status): New field x_catch_clauses_last.
        (catch_clauses_last): New define.

        * Makefile.in (tree.o): Depend on HASHTAB_H.
        * tree.c: Include hashtab.h.
        (struct type_hash): Remove next field.
        (TYPE_HASH_SIZE): Remove.
        (TYPE_HASH_INITIAL_SIZE): New define.
        (type_hash_table): Change type to htab_t.
        (type_hash_eq, type_hash_hash, print_type_hash_statistics,
        mark_hash_entry): New functions.
        (init_obstacks): Allocate type hash.
        (type_hash_lookup): Use htab functions.
        (type_hash_add, mark_type_hash): Likewise.
        (dump_tree_statistics): Call print_type_hash_statistics.

2000-03-19  Kaveh R. Ghazi  <ghazi@caip.rutgers.edu>

        * rs6000/t-aix41: New file.

        * configure.in ({rs6000,powerpc}-ibm-aix4.[12]*): Use it.

Sun Mar 19 13:27:30 2000  Hans-Peter Nilsson  <hp@axis.com>

        * tm.texi (Driver): Fix typos and tweak entry for
        INCLUDE_DEFAULTS.
        Move misplaced STRUCT_FORCE_BLK entry ...
        (Storage Layout): ... to here.
        (Run-time Target): Recommend having TARGET_MASK_... helper macros.

2000-03-19  Richard Henderson  <rth@cygnus.com>

        * flow.c (delete_block): Delete the addr_vec along with the block.
        (flow_delete_insn): Decrement LABEL_NUSES when deleting insns that
        reference labels.

        * fold-const.c (extract_muldiv): Apply type check for defined
        overflow to multiply as well as divide.

        * stor-layout.c (layout_decl): Don't abort on any zero sized decl.

2000-03-18  Mark Mitchell  <mark@codesourcery.com>

        * emit-rtl.c (remove_unncessary_notes): Check that all
        NOTE_INSN_BLOCK_BEG and NOTE_INSN_BLOCK_END notes have an
        associated NOTE_BLOCK.
        * function.h (identify_blocks): Update comments.
        (reorder_blocks): Declare.
        * function.c (identify_blocks): Don't take paramters.
        (reorder_blocks): Don't take parameters.
        * loop.h (find_loop_tree_blocks): Remove.
        (unroll_block_trees): Likewise.
        * loop.c (loop_optimize): Don't call find_loop_tree_blocks.  Use
        reorder_blocks instead of unroll_block_trees.h
        * sibcall.c (optimize_sibling_and_tail_recursive_calls): Likewise.
        * stmt.c (find_loop_tree_blocks): Remove.
        (unroll_block_trees): Likewise.
        * toplev.c (rest_of_compilation): Don't call find_loop_tree_blocks
        in whole-function mode.
        * tree.h (reorder_blocks): Remove declaration.

        * expr.c: Include intl.h.
        * Makefile.in (expr.o): Depend on intl.h.

2000-03-18  Richard Henderson  <rth@cygnus.com>

        * expr.c (emit_move_insn_1): Clarify cannot_inline message.

2000-03-18  Mark Mitchell  <mark@codesourcery.com>

        * tree.h (tree_index): Remove enumerals for integer types.
        (integer_type_kind): New type.
        (integer_types): New variable.
        (char_type_node): Adjust.
        (signed_char_type_node): Likewise.
        (unsigned_char_type_node): Likewise.
        (short_integer_type_node): Likewise.
        (short_unsigned_type_node): Likewise.
        (integer_type_node): Likewise.
        (unsigned_type_node): Likewise.
        (long_integer_type_node): Likewise.
        (long_unsigned_type_node): Likewise.
        (long_long_integer_type_node): Likewise.
        (long_long_unsigned_type_node): Likewise.
        * tree.c (integer_types): New variable.
        (init_obstacks): Register it as a root.

Sat Mar 18 14:38:00 2000  Jason Eckhardt  <jle@cygnus.com>

        * bb-reorder.c (reorder_basic_blocks): Update PREV_INSN as well as
        NEXT_INSN. Update last insn in chain.

2000-03-17  Jason Merrill  <jason@casey.cygnus.com>

        * dwarf2out.c (dwarf2out_decl): Don't emit anything for types
        with TYPE_DECL_SUPPRESS_DEBUG set.

2000-03-18  Richard Henderson  <rth@cygnus.com>

        * flow.c (make_edges): Use INTVAL to access REG_EH_REGION value.

2000-03-18  Richard Henderson  <rth@cygnus.com>

        * i386.c (call_insn_operand): Always allow SYMBOL_REF,
        care for HALF_PIC_P.
        (expander_call_insn_operand): Remove.
        (ix86_expand_epilogue): New arg `emit_return' to control return insn.
        * i386.h (PREDICATE_CODES): Update.
        * i386.md (all call expanders): Remove predicates, remove special
        handling for half-pic.
        (*call_1, *call_value_1): Handle SIBLING_CALL_P insns.
        (*call_pop_pic2, *call_pic2, *call_value_pop_2, *call_value_2): Remove.
        (sibcall_epilogue): New.

2000-03-17  Richard Henderson  <rth@cygnus.com>

        * rtlanal.c (single_set): Reject if the parallel has anything
        except SET or USE or CLOBBER.

2000-03-17  Jeff Law  <law@cygnus.com>
            Richard Henderson  <rth@cygnus.com>

        * Makefile.in (OBJS): Add sibcall.o.
        (sibcall.o): New.
        * sibcall.c: New file.
        * calls.c (FUNCTION_OK_FOR_SIBCALL): Provide default.
        (ECF_IS_CONST, ECF_NOTHROW, ECF_SIBCALL): New.
        (emit_call_1): Replace `is_const' and `nothrow' with `ecf_flags'.
        Emit sibcall patterns when requested.  Update all callers.
        (expand_call): Generate CALL_PLACEHOLDER insns when tail call
        elimination seems feasable.
        * final.c (leaf_function_p): Sibling calls don't discount being
        a leaf function.
        * flow.c (HAVE_sibcall_epilogue): Provide default.
        (find_basic_blocks_1): Sibling calls don't throw.
        (make_edges): Make edge from sibling call to EXIT.
        (propagate_block): Don't remove sibcall_epilogue insns.
        * function.c (prologue, epilogue): Turn into varrays.  Update all uses.
        (sibcall_epilogue): New.
        (fixup_var_refs): Scan CALL_PLACEHOLDER sub-sequences.
        (identify_blocks_1): Likewise.  Break out from ...
        (identify_blocks): ... here.
        (reorder_blocks_1): Scan CALL_PLACEHOLDER.  Break out from ...
        (reorder_blocks): ... here.
        (init_function_for_compilation): Zap prologue/epilogue as varrays.
        (record_insns): Extend a varray instead of mallocing new memory.
        (contains): Read a varray not array of ints.
        (sibcall_epilogue_contains): New.
        (thread_prologue_and_epilogue_insns): Emit and record
        sibcall_epilogue patterns.
        (init_function_once): Allocate prologue/epilogue varrays.
        * genflags.c (gen_insn): Treat sibcall patterns as calls.
        * integrate.c (save_parm_insns): Recurse on CALL_PLACEHOLDER patterns.
        Broken out from ...
        (save_for_inline_nocopy): ... here.
        (copy_insn_list): Recurse on CALL_PLACEHOLDER patterns.
        Broken out from ...
        (expand_inline_function): ... here.
        (copy_rtx_and_substitute): Handle NOTE_INSN_DELETED_LABEL.
        (subst_constants): Handle 'n' formats.
        * jump.c (jump_optimize_minimal): New.
        (jump_optimize_1): New arg `minimal'; update callers.  Elide most
        optimizations if it's set.
        * rtl.c (copy_rtx): Do copy jump & call for insns.
        * rtl.h (struct rtx_def): Document use of jump and call for insns.
        (SIBLING_CALL_P): New.
        (sibcall_use_t): New.
        * toplev.c (rest_of_compilation): Do init_EXPR_INSN_LIST_cache earlier.
        Invoke optimize_sibling_and_tail_recursive_calls.
        * tree.c (lang_safe_for_unsave): New.
        (safe_for_unsave): New.
        * tree.h (lang_safe_for_unsave, safe_for_unsave): Declare.

        * alpha.h (FUNCTION_OK_FOR_SIBCALL): New.
        * alpha.md (sibcall, sibcall_value, sibcall_epilogue): New.
        (*sibcall_osf_1, *sibcall_value_osf_1): New.

2000-03-17  Mark Mitchell  <mark@codesourcery.com>

        * objc/objc-act.c (encode_method_prototype): Pass types, not
        PARM_DECLs, to int_size_in_bytes.

Fri Mar 17 11:51:34 2000  Jim Wilson  <wilson@cygnus.com>

        * config/ia64/ia64.md (mix4right_3op): Swap %1 and %2 in template.

        * config/ia64/ia64-protos.h, config/ia64/ia64.c, config/ia64/ia64.h,
        config/ia64/ia64.md, config/ia64/xm-ia64.h: Fix copyrights again.

Fri Mar 17 08:09:14 2000  Richard Kenner  <kenner@vlsi1.ultra.nyu.edu>

        * Clean up usages of TREE_INT_CST_LOW.
        * c-parse.in (RESTORE_WARN_FLAGS): Use tree_low_cst.
        * c-parse.y, c-parse.c, objc/objc-parse.y, objc/objc-parse.c:
        Regenerated.
        * c-tree.h (min_precision): Move declaration to here.
        * c-typeck.c (build_binary_op): Use host_integerp and tree_low_cst.
        (build_unary_op, add_pending_init): Use bit_position.
        (pending_init_member, process_init_element): Likewise.
        (really_start_incremental_init, push_init_level, pop_init_level):
        Don't make copies of nodes or modify them in place, use consistent
        types when tracking positions, and use tree routines computations.
        (set_init_index, output_init_element): Likewise.
        (output_pending_init_elements, process_init_element): Likewise.
        * dbxout.c (dbxout_type_fields): Use bit_position, host_integerp,
        tree_low_cst and int_bit_position; also minor cleanup.
        (dbxout_type_method_1, dbxout_range_type, dbxout_type): Likewise.
        (print_cst_octal): Precision is unsigned.
        (dbxout_symbol): Ensure DECL_INITIAL is in-range and use tree_low_cst.
        * dwarf2out.c (ceiling): Input and output are unsigned HOST_WIDE_INT.
        (simple_type_align_in_bits): Result is unsigned int.
        Use tree_int_low_cst and host_integerp.
        (simple_type_size_in_bits): Result is unsigned HOST_WIDE_INT.
        (field_byte_offset): Result is HOST_WIDE_INT.
        Change types of internal variables so alignments are unsigned int,
        offsets are HOST_WIDE_INT and sizes are unsigned HOST_WIDE_INT.
        Use host_integerp, tree_low_cst, and int_bit_position.
        (add_bit_offset_attribute): Likewise.
        (add_data_member_location_attribute): Use tree_cst_low.
        (add_bound_info): Use host_integerp, integer_zerop, and integer_onep.
        (add_bit_size_attribute): Use tree_low_cst.
        (add_pure_or_virtual_attribute, gen_enumeration_type_die): Likewise.
        * dwarfout.c: Similar changes to dwarf2out.c.
        * expr.c (expand_expr, case ARRAY_REF): Remove redundant code.
        * genoutput.c (n_occurences): Return -1 for null string.
        (strip_whitespace): Accept null string and make into function.
        (scan_operands): Reflect above changes.
        * sdbout.c (plain_type_1): Use host_integerp and tree_low_cst.
        (sdbout_field_types, sdbout_one_type): Likewise; also use bit_position.
        * ssa.c (rename_registers): Add missing cast of arg to bzero.
        * tree.c (int_size_in_bytes): Check for too big to represent.
        (bit_position, int_bit_position, host_integerp, tree_low_cst): New fns.
        * tree.h (host_integerp, tree_low_cst, bit_position, int_bit_position):
        New declarations.
        (min_precision): Delete from here.
        * varasm.c (decode_addr_const): Use host_integerp, bit_position,
        and int_bit_position.
        * objc/objc-act.c (encode_method_prototype): Sizes are HOST_WIDE_INT.
        (encode_method_def): Likewise.
        (build_ivar_list_initializer): Use int_bit_position.
        (generate_shared_structures): Convert size.
        (encode_type, encode_complete_bitfield): Use integer_zerop.
        (encode_bitfield): Use tree_low_cst and int_bit_position.

2000-03-17  Michael Hayes  <m.hayes@elec.canterbury.ac.nz>

        * config/c4x/c4x.h (CPP_SPEC): Fix typo.

2000-03-17  Martin v. Löwis  <loewis@informatik.hu-berlin.de>

        * call.c (special_function_p): It is only malloc if it returns
        Pmode.

2000-03-17  Michael Hayes  <m.hayes@elec.canterbury.ac.nz>

        * config/c4x/c4x.h (ASM_SPEC, CPP_SPEC, LINK_SPEC): Support C33.
        (C33_FLAG, TARGET_C3X): Add macros.
        (TARGET_SWITCHES): Add -m33 option.
        * config/c4x/c4x.c (c4x_override_options): Test for TARGET_C33.

2000-03-17  Michael Hayes  <m.hayes@elec.canterbury.ac.nz>

        * config/c4x/c4x.h (PARALLEL_INSN_FLAG): Add.
        (PARALLEL_PACK_FLAG): Delete.
        (TARGET_SWITCHES): Update.
        (TARGET_PARALLEL): Use PARALLEL_INSN_FLAG.

Thu Mar 16 18:52:32 2000  Richard Kenner  <kenner@vlsi1.ultra.nyu.edu>

        * fold-const.c (fold): Fix a few cases when the returned result
        is not of the same type as the input.

2000-03-16  Nick Clifton  <nickc@cygnus.com>

        * config/arm/arm.h (ASM_OUTPUT_MI_THUNK): Fix compile time
        warning.

2000-03-16  Kaveh R. Ghazi  <ghazi@caip.rutgers.edu>

        * libgcc2.h: Move prototypes above macros with the same name.
        Wrap some function prototypes in the conditional which indicates
        whether they are supported, i.e. "BITS_PER_UNIT == 8".

2000-03-16  Richard Henderson  <rth@cygnus.com>

        * calls.c: Revert last two changes.

2000-03-16  Bernd Schmidt  <bernds@cygnus.co.uk>

        * fp-bit.c (_unpack_d): If NO_DENORMALS is defined, anything that
        has exponent 0 is a zero.

        * simplify-rtx.c (hash_rtx, case MEM/REG): Take into account that
        HASH may already be nonzero.  Add code/mode into hash value
        immediately after repeat label.
        (cselib_lookup): Don't leave the hash table in an inconsistent
        state before a hash lookup operation.

Thu Mar 16 17:03:10 MET 2000  Jan Hubicka  <jh@suse.cz>

        * i386.md (all HI and QI mode non-move patterns):  Conditionize
        by TARGET_[HQ]IMODE_MATH.
        * i386.h (x86_himode_math, x86_qimode_math, x86_promote_hi_regs,
        x86_promote_qi_regs): Declare.
        (TARGET_HIMODE_MATH, TARGET_QIMODE_MATH, TARGET_PROMOTE_HI_REGS,
        TARGET_PROMOTE_QI_REGS): New macros.
        (PROMOTE_MODE): New macro.
        * i386.c (x86_himode_math, x86_qimode_math, x86_promote_hi_regs,
        x86_promote_qi_regs): New global variables.

Thu Mar 16 16:50:44 MET 2000  Jan Hubicka  <jh@suse.cz>

        * calls.c (emit_library_call_value_1): Break out from ...; handle
        VOIDmode function calls too.
        (emit_library_call_value): ... here.
        (emit_library_call): Implement by calling emit_library_call_value_1.

Thu Mar 16 16:01:30 MET 2000  Jan Hubicka  <jh@suse.cz>

        * calls.c (expand_call): Do sanity checking on arg_space_so_far.
        Update arg_space_so_far on stack adjustments.
        (emit_library_call, emit_library_call_value): Likewise; take into
        account arg_space_so_far and pending_stack_adjust when calculcating
        the boundary.

Thu Mar 16 09:02:19 2000  Jason Eckhardt  <jle@cygnus.com>

        * flow.c: Move all basic block reordering code into its own file.
        (create_basic_block): Externalize.
        * bb-reorder.c: New file. Copy all basic block reordering code from
        flow.c to this file.
        (reorder_basic_blocks): Fix fencepost error in for-loop.
        (reorder_basic_blocks): Remove braces from single statement for-loops.
        * basic-block.h: Add declaration for create_basic_block.
        * Makefile.in: Add rules for bb-reorder.o.

2000-03-16  Neil Booth  <NeilB@earthling.net>

        * cppinit.c (handle_option):  Implement #unassert directive
        as -A- command line option.
        (print_help):  Update.
        * cpptexi.c:  Update.

Thu Mar 16 02:14:16 2000  Hans-Peter Nilsson  <hp@bitrange.com>

        * md.texi (Standard Names): Document `jump'.

2000-03-15  Jason Merrill  <jason@casey.cygnus.com>

        * calls.c (emit_call_1): Nothrow functions can still have nonlocal
        gotos.

2000-03-15  Geoff Keating  <geoffk@cygnus.com>

        Merge changes from newppc-branch onto trunk.

        2000-03-15  Geoff Keating  <geoffk@cygnus.com>

        * rs6000.c (toc_hash_table): Update for new hash table functions.
        (toc_hash_function): Likewise.
        (toc_hash_eq): Likewise.
        (toc_hash_mark_entry): Likewise.
        (toc_hash_mark_table): Likewise.
        (output_toc): Likewise.
        (rs6000_add_gc_roots): Likewise.

        2000-03-15  Alexandre Oliva  <oliva@lsd.ic.unicamp.br>

        * t-aix43 (AR_FOR_TARGET): Deleted.  Moved `-X32_64'...
        (AR_FLAGS_FOR_TARGET): here.  New macro.

        2000-03-05  Clinton Popetz  <cpopetz@cygnus.com>

        * config/rs6000/rs6000.c (rs6000_fpmem_offset, rs6000_fpmem_size,
        fpmem_operand) Delete.
        (xer_operand) New.
        (rs6000_reg_names, alt_reg_names): Change fpmem to xer.
        (machine_function): Remove fpmem_size, fpmem_offset, save_toc_p.
        (rs6000_save_machine_status, rs6000_restore_machine_status,
        rs6000_init_expanders, rs6000_stack_info, debug_stack_info): Remove
        references to above variables.
        (gpc_reg_operand): Use XER_REGNO_P instead of FPMEM_REGNO_P.
        * config/rs6000/rs6000.h (REG_ALLOC_ORDER, REGISTER_NAMES,
        DEBUG_REGISTER_NAMES): Chagne fpmem to xer.
        (FPMEM_REGNO_P, FPMEM_REGNUM): Delete.
        (XER_REGNO_P, XER_REGNO): New.
        (rs6000_stack): Remove fpmem_p, fpmem_offset, fpmem_size.
        (PREDICATE_CODES): Change fpmem_operand to xer_operand.
        (HARD_REGNO_NREGS, HARD_REGNO_MODE_OK): Change FPMEM_REGNO_P to
        XER_REGNO_P.
        (reg_class, REG_CLASS_NAMES, REG_CLASS_CONTENTS, REGNO_REG_CLASS,
        REG_CLASS_FROM_LETTER, CLASS_MAX_NREGS): Change FPMEM_REGS to XER_REGS,         and remove FLOAT_OR_FPMEM_REGS.
        (CLASS_CANNOT_CHANGE_SIZE): Change to FLOAT_REGS.

        2000-02-29  Franz Sirl  <Franz.Sirl-kernel@lauterbach.com>

        * aix.h (FP_SAVE_INLINE, ASM_OUTPUT_INTERNAL_LABEL_PREFIX,
        TEXT_SECTION_ASM_OP, DATA_SECTION_ASM_OP): Move here...
        * rs6000.h: from here.

        * rs6000-protos.h (rs6000_select_section): Provide prototype.
        (rs6000_select_rtx_section): Likewise.
        (rs6000_encode_section_info): Likewise.
        (sdata_section): Likewise.
        (sdata2_section): Likewise.
        (sbss_section): Likewise.
        * sysv4.h (rs6000_select_section): Delete prototype.
        (rs6000_select_rtx_section): Likewise.
        (rs6000_encode_section_info): Likewise.
        (sdata_section): Likewise.
        (sdata2_section): Likewise.
        (sbss_section): Likewise.
        (REG_SAVE_AREA): Delete definition duplicated in rs6000.h.

        * sysv4.h: Delete various unnecessary #undef's and put a comment
        on the remaining ones.
        Change various comments according to coding standard.

        2000-02-29  Clinton Popetz  <cpopetz@cygnus.com>

        * config/rs6000/rs6000.h (MQ_REGNO, CR0_REGNO, CR1_REGNO, CR2_REGNO,
        CR3_REGNO, CR4_REGNO, MAX_CR_REGNO): Define.
        (CR0_REGNO_P) Remove.
        * config/rs6000/rs6000.c (gpc_reg_operand, and64_operand, and_operand,
        setup_incoming_varargs, mtcrf_operation, print_operand,
        rs6000_stack_info, rs6000_emit_prologue, rs6000_emit_epilogue):
        Use the above macros.

        2000-02-24  Clinton Popetz  <cpopetz@cygnus.com>

        * config/rs6000/rs6000.md: Added a new alternative for each
        pattern that had a 'x' alternative but no 'y' alternative.
        Added a new split for each of the above patterns.

        2000-02-18  Geoff Keating  <geoffk@cygnus.com>

        * aix41.h (ASM_CPU_SPEC): Delete.
        (CPP_CPU_SPEC): Delete.

        * aix.h (RS6000_OUTPUT_BASENAME): Define.
        (ASM_OUTPUT_LABEL): Define.
        (ASM_GLOBALIZE_LABEL): Define.
        (STRIP_NAME_ENCODING): Define.
        * rs6000.h (RS6000_OUTPUT_BASENAME): Don't define.
        (STRIP_NAME_ENCODING): Don't define.
        (ASM_OUTPUT_LABEL): Don't define.
        (ASM_GLOBALIZE_LABEL): Don't define.
        * sysv4.h (ASM_DECLARE_FUNCTION_NAME): Use assemble_name to output
        names, and ASM_OUTPUT_LABEL to output labels, rather than
        asm_fprintf.
        (ASM_OUTPUT_LABEL): Define.
        (ASM_OUTPUT_INT): Use assemble_name.
        (ASM_OUTPUT_DWARF_ADDR): Use assemble_name.
        (STRIP_NAME_ENCODING): Don't undefine first.
        (RS6000_OUTPUT_BASENAME): Make equivalent to assemble_name for
        ELF.
        (ASM_OUTPUT_LABELREF): Don't prepend underscores to labels
        specified with 'asm' even with -fleading-underscore.
        * rs6000.c (print_operand): Use assemble_name when !TARGET_AIX.
        (output_epilog): Likewise.
        (output_toc): Likewise.
        * tramp.asm: Handle -fleading-underscore correctly.

        * rs6000.md (builtin_setjmp_receiver): Also run for -fPIC and
        -mminimal-toc.
        (nonlocal_goto_receiver): Delete.
        * rs6000.h (DONT_ACCESS_GBLS_AFTER_EPILOGUE): Delete.

        * rs6000.h (ASM_OUTPUT_DEF): Don't define.
        (SET_ASM_OP): Define.
        * sysv4.h (ASM_OUTPUT_DEF): Don't undefine.

        * rs6000.h (ASM_OUTPUT_ADDR_VEC_ELT): Don't define.
        (ASM_LONG): Define.

        * rs6000.c (rs6000_dll_import_ref): Delete, not used.
        * rs6000-protos.h (rs6000_dll_import_ref): Delete.

        * rs6000.h: Add 'u' to more constants.

        2000-02-18  David Edelsohn  <edelsohn@gnu.org>

        * rs6000.md (mfcr+shift): Delete PowerPC64 version.

        2000-02-15  David Edelsohn  <edelsohn@gnu.org>

        * rs6000.c (reg_or_u_cint_operand): New function.
        (logical_operand): Handle 64-bit hosts.
        (logical_u_operand): New function.
        (non_logical_cint_operand): Handle 64-bit hosts.
        (non_logical_u_cint_operand): New function.
        * rs6000.h (DATA_SECTION_ASM_OP): Add tab.
        (PREDICATE_CODES): Define new functions.
        * rs6000-protos.h: Declare new functions.
        * rs6000.md (iordi3, xordi3): Constant int must be unsigned 32-bits.
        (movdi_64): Bracket code intended for 64-bit hosts.  Create
        CONST_DOUBLE for 32-bit values.
        (scc insns): Generate DImode compares.
        (mfcr insns): Create DImode versions.
        (sge matchers): New patterns.

        2000-02-15  Gabriel Paubert  <paubert@iram.es>

        * rs6000.md: Correct instructions length attributes and
        constraints on unsigned compare instructions.
        (*ne0): Disable for PowerPC64.

        2000-02-11  Geoff Keating  <geoffk@cygnus.com>

        * rs6000.c (output_function_profiler): Use .long for a 32-bit
        quantity, fix profile1.C test failure under -fPIC.

        * rs6000.c: Add 'u' to many constants to suppress warnings.
        (constant_pool_expr_1): Make static.
        (rs6000_emit_eh_toc_restore): Remove unused 'r2'.
        * rs6000.h: Add 'u' to many constants to suppress warnings.

        * rs6000.c (rs6000_emit_load_toc_table): Use LCTOC..1 under AIX
        for the start of the TOC, instead of LCTOC..0.
        * aix.h (toc_section): Use LCTOC..1 under AIX for the start
        of the TOC.
        * rs6000.md (load_toc_aix_si): Use LCTOC..1.
        (load_toc_aix_di): Use LCTOC..1.

        * rs6000.h (LEGITIMIZE_ADDRESS): Turn into a function.
        * rs6000.c (rs6000_legitimize_address): New function from
        LEGITIMIZE_ADDRESS.  Only use create_TOC_reference on
        symbols in the constant pool that really are TOC references.
        (print_operand_address): For ELF, write TOC offsets under
        -fPIC as subtractions in the insn.
        (output_toc): For ELF, define symbols in TOC as normal labels,
        to match RTL.
        (create_TOC_reference): Use gen_rtx_PLUS rather than gen_rtx.
        * rs6000-protos.h (rs6000_legitimize_address): Prototype.
        (create_TOC_reference): Prototype only when RTX_CODE is defined.
        * rs6000.md (movsi): Only use create_TOC_reference on
        symbols in the constant pool that really are TOC references.

        * rs6000.h (MACHINE_DEPENDENT_REORG): Don't define.
        * rs6000.c (rs6000_reorg): Delete.
        * rs6000-protos.h (rs6000_reorg): Delete.

        2000-02-09  Geoff Keating  <geoffk@cygnus.com>

        * rs6000.h (INCOMING_RETURN_ADDR_RTX): New macro.

        * aix.h (SETUP_FRAME_ADDRESSES): Define.
        * rs6000.c [TARGET_AIX] (insn_after_throw): New static variable.
        [TARGET_AIX] (rs6000_aix_emit_builtin_unwind_init): New function.
        [TARGET_AIX] (rs6000_emit_eh_toc_restore): New function.
        * rs6000-protos.h: Prototype rs6000_emit_eh_toc_restore,
        rs6000_aix_emit_builtin_unwind_init.
        * rs6000.md (eh_epilogue) [TARGET_AIX]: Call
        rs6000_emit_eh_toc_restore on AIX.
        (return_eh_si): Use r2.
        (return_eh_di): Use r2.

        * aix43.h: Turn on HAS_INIT_SECTION and LD_INIT_SWITCH,
        since we're breaking binary compatibility anyway.

        2000-02-09  Clinton Popetz  <cpopetz@cygnus.com>

        * config/rs6000/rs6000-protos.h: (get_TOC_alias_set, uses_TOC,
        constant_pool_expr_p): Declare them.
        (constant_pool_expr_p): Declare it.
        * config/rs6000/rs6000.c (toc_label_name): Define.
        (rs6000_override_options): Set toc_label_name.
        (input_operand): Allow any TOC_RELATIVE_EXPR_P.
        (get_TOC_alias_set, constant_pool_expr_p, constant_pool_expr_1,
        uses_TOC): New functions.
        (print_operand): Delete old '*' case.
        (print_operand_address): Use LEGITIMATE_CONSTANT_POOL_ADDRESS_P,
        and strip off rtl for TOC before calling output_addr_const.
        (rs6000_emit_load_toc_table): Use toc_label_name.
        * config/rs6000/rs6000.h (TARGET_SWITCHES): Make msched-prolog
        the default.
        (LEGITIMATE_CONSTANT_POOL_BASE_P): Delete.
        (CONSTANT_POOL_EXPR_P, TOC_RELATIVE_EXPR_P): New macros.
        (LEGITIMATE_CONSTANT_POOL_ADDRESS_P): Use CONSTANT_POOL_EXPR_P.
        (LEGITIMIZE_ADDRESS, LEGITIMIZE_RELOAD_ADDRESS): Turn symbol_refs
        into explicit TOC_REGISTER offsets.
        (TOC_REGISTER): New macro.
        * config/rs6000/rs6000.md (movsi, movdi): Emit rtl under
        TARGET_TOC to reference TOC_REGISTER.
        (load_toc_v4_PIC_1b): Add 4 to offset for toc reload.
        * config/rs6000/sysv4.h (ASM_DECLARE_FUNCTION_NAME): Call
        uses_TOC before emitting label references.

        2000-02-05  Geoff Keating  <geoffk@cygnus.com>

        * rs6000.md (stack_tie): Fix warning.

        * eabi-ctors.c: Use 'asm' names for the start/end variables,
        to handle -fleading-underscore.
        * sysv4.h (ASM_DECLARE_FUNCTION_NAME): Use asm_fprintf and %U.
        (USER_LABEL_PREFIX): New macro.
        (ASM_OUTPUT_INTERNAL_LABEL_PREFIX): Use asm_fprintf and %L.
        (ASM_OUTPUT_LABELREF): Use asm_fprintf and %U.
        * t-ppccomm (MULTILIB_MATCHES_SYSV): Note that call-sysv and
        call-linux can use the same multilibs.
        * t-ppcgas (MULTILIB_OPTIONS): Don't need to have separate call-sysv
        and call-linux multilibs.  Do multilib with -fleading-underscore.
        (MULTILIB_DIRNAMES): Follow MULTILIB_OPTIONS change.
        (MULTILIB_EXCEPTIONS): Remove call-linux exceptions.  Add restrictions
        to call-aix.

        * sysv4.h (CPP_SYSV_SPEC): Define _SOFT_FLOAT for all those CPUs that
        have MASK_SOFT_FLOAT set.
        (CPP_FLOAT_DEFAULT_SPEC): New macro.
        (SUBTARGET_EXTRA_SPECS): Set `cpp_float_default' to the value of
        CPP_FLOAT_DEFAULT_SPEC.

        * rs6000.c (ccr_bit): Add some consistency checks and a variable 'reg'.
        * rs6000.md: Whitespace change.
        * sysv4.h (LINK_TARGET_SPEC): Whitespace change.
        * sysv4le.h (LINK_TARGET_SPEC): Whitespace change.

        2000-02-05  Geoff Keating  <geoffk@cygnus.com>

        * rs6000.md (eh_epilogue): New expander.
        (eh_reg_restore): New expand/split/insn combination.
        (return_eh_si): New insn.
        (return_eh_di): New insn.

        * eabi-ci.asm: Put a label at the start of the .eh_frame section.
        * eabi-cn.asm: Put a zero at the end of the .eh_frame section.
        * eabi-ctors.c (__do_global_ctors): Register this object's
        frame.  Clean up.  Call atexit() after the constructors.
        (__do_global_dtors): Deregister this object's frame.  Clean up.
        Allow for recursive calls to exit().
        * rs6000.c (fixuplabelno): New variable.
        * sysv4.h (ASM_OUTPUT_INT): Don't do .fixup if not
        TARGET_RELOCATABLE, it slows down exec() under linux.
        (ASM_OUTPUT_DWARF_ADDR): Do .fixup if TARGET_RELOCATABLE.

        * aix.h (ASM_OUTPUT_DWARF_ADDR_VAR): New macro.
        (ASM_OUTPUT_DWARF_DELTA_VAR): New macro.
        (ASM_OUTPUT_DWARF_DELTA2): New macro.
        (ASM_OUTPUT_DWARF_DELTA4): New macro.
        (ASM_OUTPUT_DWARF_ADDR_DELTA): New macro.
        (ASM_OUTPUT_DWARF_ADDR): New macro.
        (ASM_OUTPUT_DWARF_DATA4): New macro.
        (ASM_OUTPUT_DWARF_DATA2): New macro.
        (ASM_OUTPUT_DWARF_OFFSET4): New macro.
        (ASM_OUTPUT_DWARF_OFFSET): New macro.
        (UNALIGNED_INT_ASM_OP): New macro, fake definition.

        2000-02-03  Geoff Keating  <geoffk@cygnus.com>

        * rs6000.c (rs6000_sr_alias_set): New variable.
        (rs6000_override_options): Initialise rs6000_sr_alias_set.
        (rs6000_emit_stack_tie): New function.
        (rs6000_emit_allocate_stack): Specify RTX_FRAME_RELATED_P
        in a way that dwarf2out can understand.
        (rs6000_frame_related): New function.
        (rs6000_emit_prologue): Use rs6000_sr_alias_set.  Specify
        RTX_FRAME_RELATED_P in a way that dwarf2out can understand.
        Use rs6000_emit_stack_tie when needed.
        (rs6000_emit_epilogue): Use rs6000_sr_alias_set.  Don't set
        RTX_FRAME_RELATED_P.  Use rs6000_emit_stack_tie when needed.
        * rs6000.md (stack_tie): New insn.
        (return_internal_si): Allow return value to be in the count
        register.
        (return_internal_di): Likewise.

        * rs6000.c (output_mi_thunk): Remove unused variable `sp'.

        2000-02-03  Geoff Keating  <geoffk@cygnus.com>

        * sysv4.h (LOCAL_LABEL_PREFIX): Define, for the use of dbxelf.h.

        2000-01-31  Geoff Keating  <geoffk@cygnus.com>

        * rs6000.h (ASM_OUTPUT_DEF_FROM_DECLS): New macro.

        * rs6000.md (stmw): Use the right POWER opcode.
        (lmw): Likewise.

        2000-01-31  Kaveh R. Ghazi  <ghazi@caip.rutgers.edu>

        * rs6000-protos.h: New file.

        * rs6000.c: Include tm_p.h.  Fix compile time warnings.

        * rs6000.h: Move prototypes to rs6000-protos.h.  Fix compile time
        warnings.

        * sysv4.h: Likewise.

        2000-01-28  Geoff Keating  <geoffk@cygnus.com>

        * ../../configure.in: Delete powerpcle-*-winnt*
        and powerpcle-*-pe|powerpcle-*-cygwin*.
        * ../../configure: Regenerated.
        * cygwin.h: Delete.
        * rs6000.h (OBJECT_WINDOWS_NT): Delete.
        (TARGET_WINDOWS_NT): Delete.
        (ABI_NT): Delete.
        (CALL_NT_DLLIMPORT): Delete.
        Delete NT-specific code.
        * rs6000.md, rs6000.c, sysv4.h: Delete NT-specific code.
        * win-nt.h: Delete.
        * t-winnt: Delete.
        * nt-ci.asm: Delete.
        * nt-cn.asm: Delete.
        * ntstack.asm: Delete.

        2000-01-27  Franz Sirl  <Franz.Sirl-kernel@lauterbach.com>

        * rs6000.h (SELECT_RTX_SECTION): Move to aix.h.
        (ASM_FILE_START): Likewise.
        (ASM_DECLARE_FUNCTION_NAME): Likewise.
        (ASM_OUTPUT_LABELREF): Likewise.
        (ASM_OUTPUT_SKIP): Likewise.
        (ASM_OUTPUT_INTERNAL_LABEL): Likewise.
        (ASM_GENERATE_INTERNAL_LABEL): Likewise.
        (ASM_OUTPUT_CASE_LABEL): Likewise.
        (ASM_OUTPUT_ALIGNED_COMMON): Likewise.
        (ASM_OUTPUT_ASCII): Likewise.

        2000-01-27  Clinton Popetz  <cpopetz@cygnus.com>

        * rs6000.c (rs6000_emit_load_toc_table): Use "LCG" and
        reload_toc_labelno for non-prologue TOC reloads.  Also, don't
        increment rs6000_pic_labelno here.
        (rs6000_emit_prologue): Pass TRUE to rs6000_emit_load_toc_table,
        and increment rs6000_pic_labelno here.

        2000-01-24  Geoffrey Keating  <geoffk@cygnus.com>

        * rs6000.md (fctiwz): Use (set (reg) (unspec:DI [(fix:SI ...)]))
        rather than (set (subreg:SI (reg)) (fix:SI ...)) so that register
        allocation knows (reg) is dead before the insn.

        2000-01-21  Geoff Keating  <geoffk@cygnus.com>

        * rs6000.md (movsi_to_cr): Correct typo in output template.

        2000-01-19  Geoffrey Keating  <geoffk@cygnus.com>

        * rs6000.c (rs6000_pic_labelno): Always define.
        (rs6000_pic_func_labelno): Delete.
        (lmw_operation): Check for a zero base register,
        which doesn't mean what we want.
        (stmw_operation): New function.
        (print_operand): Define new 'l' modifier.
        (rs6000_stack_info): We must save all 64 bits of the registers
        if TARGET_POWERPC64.
        (rs6000_output_load_toc_table): Delete.
        (rs6000_emit_load_toc_table): New function.
        (rs6000_allocate_stack_space): Delete.
        (rs6000_emit_allocate_stack): New function.
        (rs6000_emit_prologue): New function.
        (output_prolog): Use rs6000_emit_prologue.
        (rs6000_emit_epilogue): Change a few variable names to be
        more accurate.  Restore all 64 bits of the registers if
        TARGET_POWERPC64.  Only restore the FP registers which were used
        if they are being saved/restored one-at-a-time.
        (output_mi_thunk): Delete inefficient code generation.
        (output_function_profiler): Don't use rs6000_output_load_toc_table.
        * rs6000.h: Declare rs6000_emit_load_toc_table,
        rs6000_allocate_stack_space, stmw_operation.  Don't declare
        rs6000_output_load_toc_table.
        * rs6000.md (elf_high): Allow register 0, but discourage it
        heavily.
        (elf_low): Support loading into register 0.
        (load_toc_aix_si): New pattern.
        (load_toc_aix_di): New pattern.
        (load_toc_v4_pic_si): New pattern.
        (load_toc_v4_pic_di): New pattern.
        (load_toc_v4_PIC_1): New pattern.
        (load_toc_v4_PIC_1b): New pattern.
        (load_toc_v4_PIC_2): New pattern.
        (builtin_setjmp_receiver): Use rs6000_emit_load_toc_table.
        (nonlocal_goto_receiver): Use rs6000_emit_load_toc_table.
        (prologue): New expander.
        (movesi_from_cr): New pattern.
        (stmw): New pattern.
        (save_fpregs_si): New pattern.
        (save_fpregs_di): New pattern.

        2000-01-19  Geoff Keating  <geoffk@cygnus.com>

        * rs6000.md (movsi): Don't use force_reg when no_new_pseudos.
        (movdi): Likewise.
        (movhi): Likewise.
        (movqi): Likewise.

        2000-01-19  Geoff Keating  <geoffk@cygnus.com>

        * rs6000.md (movsi_got): 'unspec 8' returns a SImode result,
        at present.
        (movsi_got_internal): Likewise.
        (movsi_got_internal+1): Likewise.
        (set_sp): 'unspec 7' does a SImode clobber.

        2000-01-19  Geoff Keating  <geoffk@cygnus.com>

        * rs6000.md (floatsidf2): Don't use the fpmem "register", just
        allocate a stack temporary.
        (floatsidf2_internal): Likewise.
        (floatsidf2_internal+1): Likewise.  Don't do bizzare hacks
        with unspec.
        (floatunssidf2): Don't use the fpmem "register", just
        allocate a stack temporary.
        (floatunssidf2_internal): Likewise.
        (floatunssidf2_internal+1): Likewise.  Don't do bizzare hacks
        with unspec.
        (floatsidf2_loadaddr): Delete.
        (floatsidf2_store1): Delete.
        (floatsidf2_store2): Delete.
        (floatsidf2_load): Delete.
        (fix_truncdfsi2): Don't use the fpmem "register", just
        allocate a stack temporary.
        (fix_truncdfsi2_internal_si): Delete.
        (fix_truncdfsi2_internal_di): Delete.
        (fix_truncdfsi2_internal): New insn.
        (fix_truncdfsi2_internal+1): Don't use the fpmem "register".
        (fix_truncdfsi2_store): Delete.
        (fix_truncdfsi2_load): Delete.
        (fctiwz): Produce gen_fctiwz.

        2000-01-19  Geoffrey Keating  <geoffk@cygnus.com>

        * eabi.h (INVOKE__main): Define.
        * rs6000.c (rs6000_stack_info): Don't handle call to NAME__MAIN
        specially.
        (rs6000_emit_prologue): Likewise.
        * rs6000.h (struct rs6000_stack): Don't keep track of whether
        this is the main program.

        2000-01-19  Geoff Keating  <geoffk@cygnus.com>

        * rs6000.c (rs6000_va_arg): Delete some unused variables.

        2000-01-19  Geoff Keating  <geoffk@cygnus.com>

        * rs6000.c (rs6000_va_arg): On AIX, padding for small arguments
        goes after the argument.

        2000-01-12  Geoff Keating  <geoffk@cygnus.com>

        * rs6000.md: Document 'unspec' values used.
        (epilogue): New expander.
        (movesi_to_cr_one): New expander.
        (movesi_to_cr and following): New pattern.
        (lmw): New pattern.
        (return_internal_si): New pattern.
        (return_internal_di): New pattern.
        (return_and_restore_fpregs_si): New pattern.
        (return_and_restore_fpregs_di): New pattern.
        * rs6000.h: Declare new functions.
        * rs6000.c (rs6000_stack_info): Use current_function_is_leaf
        rather than rs6000_calls_p.
        (rs6000_makes_calls): Delete.
        (lmw_operation): New function.
        (mtcrf_operation): New function.
        (rs6000_emit_epilogue): New function.
        (output_epilog): Call rs6000_emit_epilogue and final if
        !TARGET_SCHED_PROLOG, instead of writing text unconditionally.

        2000-01-12  Geoff Keating  <geoffk@cygnus.com>

        * aix43.h (SUBSUBTARGET_SWITCHES): Document switches.
        * aix41.h (SUBSUBTARGET_SWITCHES): Document switches.
        * aix.h (SUBTARGET_SWITCHES): Document switches.
        * rs6000.h: (TARGET_SWITCHES): Don't print options twice.  Make
        sched-prolog and sched-epilog the same.  Document all the
        switches.
        (TARGET_OPTIONS): No longer allow -mdebug-.

        2000-01-12  Geoff Keating  <geoffk@cygnus.com>

        * rs6000.h (ASM_FILE_END): Move to aix.h.
        (EXTRA_SECTIONS): Move to aix.h.
        (READONLY_DATA_SECTION): Move to aix.h.
        (EXTRA_SECTION_FUNCTIONS): Move to aix.h.
        (SELECT_SECTION): Move to aix.h.
        (JUMP_TABLES_IN_TEXT_SECTION): Move to aix.h.
        (INT_REGNO_P): Use symbolic name for ARG_POINTER_REGNUM.
        (LINK_REGISTER_REGNUM): New definition.
        (RETURN_ADDR_RTX): Use symbolic name for LINK_REGISTER_REGNUM.
        (SLOW_UNALIGNED_ACCESS): Define in a way suitable for both
        AIX and SVR4.
        * sysv4.h: Delete the code between the inclusion of rs6000.h
        and svr4.h.
        (DWARF_DEBUGGING_INFO): Don't define, it's defined in elfos.h.
        (FP_ARG_MAX_REG): Move generic definition to rs6000.h.
        (RS6000_REG_SAVE): Move generic definition to rs6000.h.
        (RS6000_SAVE_AREA): Move generic definition to rs6000.h.
        * rs6000.md (floatsidf2_loadaddr): The first arg here is Pmode.
        (fix_truncdfsi2_internal): Rename to fix_truncdfsi2_internal_si.
        (fix_truncdfsi2_internal_di): New pattern.
        (fix_truncdfsi2_store): The second arg here is Pmode too.
        (fix_truncdfsi2_load): The second arg here is Pmode too.
        (tablejumpdi): Now that switch tables hold only SImode values,
        gcc needs to know how to add them to the pc which is DImode.
        * rs6000.c (rs6000_stack_info): Use symbolic name for
        LINK_REGISTER_REGNUM.
        (output_mi_thunk) [!TARGET_ELF]: Don't define sp, it's not used.
        (output_toc): Delete unused variables s1 and s2.
        (output_ascii): Use fputs not fprintf on a variable string.

        2000-01-07  David Edelsohn  <edelsohn@gnu.org>

        * rs6000.c (processor_target_table): Add power3 as alias for 630.
        * aix43.h: Revert Aug 2 change.
        (HAS_INIT_SECTION): Define, not visible yet.
        (LD_INIT_SWITCH): Define, not visible yet.
        * t-aix43 (MULTILIB_OPTIONS): Revert Aug 2 change.

        2000-01-04  Joel Sherrill (joel@OARcorp.com>

        * config/rs6000/rtems.h: Include config/rtems.h.

        2000-01-04  David Edelsohn  <edelsohn@gnu.org>

        * rs6000.h (HANDLE_PRAGMA_PACK): Define.
        (SLOW_UNALIGNED_ACCESS): Define.
        (CASE_VECTOR_MODE): Always use 32-bit offsets.
        (ASM_FILE_END): Generate 64-bit symbol in 64-bit mode.
        (EXTRA_SECTOIN_FUNCTIONS): Indent .csect pseudo-op.
        (toc_section): Likewise and .toc pseudo-op.
        (ASM_DECLARE_FUNCTION): Likewise.  Align text more strictly in
        64-bit mode.
        (TEXT_SECTION_ASM_OP): Likewise.
        (ASM_OUTPUT_ADD_VEC_ELT, ASM_OUTPUT_ADDR_DIFF_ELT): Always use
        32-bit offsets.

        1999-12-17  Jakub Jelinek  <jakub@redhat.com>

        * config/rs6000/rs6000.h (TARGET_POWERPC64): Make sure
        UNITS_PER_WORD and BITS_PER_WORD are compile time constants when
        compiling libgcc2.

        2000-01-06  Franz Sirl <Franz.Sirl-kernel@lauterbach.com>

        * rs6000.h: Move more stuff from here...
        * aix.h: to here.
        * sysv4.h: Cleanup accordingly.
        * netware.h: Likewise

        2000-01-05  Franz Sirl <Franz.Sirl-kernel@lauterbach.com>

        * rs6000.h: Continue cleanup.
        * aix.h: Likewise.
        * lynx.h: Likewise.
        * netware.h: Likewise.
        * sol2.h: Likewise.
        * sysv4.h: Likewise.
        * win-nt.h: Likewise.

        * rs6000.h (TARGET_SWITCHES): Add descriptions.
        (TARGET_OPTIONS): Likewise.

        * sysv4.h (SUBTARGET_SWITCHES): Add descriptions.
        (SUBTARGET_OPTIONS): Likewise.

        * rs6000.md: Fix compile time warnings.

        2000-01-04  Geoff Keating  <geoffk@cygnus.com>

        vxworks patches from the Cygnus tree originally by
        Michael Meissner <meissner@cygnus.com> and Vladimir Makarov
        <vmakarov@cygnus.com>.
        * sysv4.h (SUBTARGET_SWITCHES): Add vxworks.
        (ENDFILE_SPEC): Likewise.
        (LIB_VXWORKS_SPEC): New macro.
        (STARTFILE_VXWORKS_SPEC): New macro.
        (ENDFILE_VXWORKS_SPEC): New macro.
        (LINK_START_VXWORKS_SPEC): New macro.
        (LINK_OS_VXWORKS_SPEC): New macro.
        (CPP_OS_VXWORKS_SPEC): New macro.
        (SUBTARGET_EXTRA_SPECS): Add all the vxworks specs.
        * vxppc.h: Rewrite to use proper configuration method.
        * vxppcle.h: New file.
        * ../../configure.in: Add powerpcle-wrs-vxworks*.
        * ../../configure: Rebuilt.

        2000-01-04  Geoff Keating  <geoffk@cygnus.com>

        Lots of changes to rs6000.h, sysv4.h, aix.h,
        aix31.h, aix3newas.h, aix41.h, aix43.h, beos.h,
        with the aim that rs6000.h is the first header
        included and the others override it.
        * aix.h: New file.

        * x-aix41-gld: Remove.
        * x-aix43: Remove.
        * x-aix41: Remove target-specific switches, and don't specify
        -Wl,-bbigtoc as we don't need it any more.
        * ../../configure.in: Use x-aix41 for ppc AIX 4.1 and above.
        Use t-aix43 for AIX 4.3 and above.
        * ../../configure: Regenerated.

        * rs6000.h (TARGET_SWITCHES): Add some initial prolog-scheduling
        options, that don't do anything yet.
        (MASK_SCHED_PROLOG): New macro.
        (MASK_SCHED_EPILOG): New macro.
        (TARGET_SCHED_PROLOG): New macro.
        (TARGET_SCHED_EPILOG): New macro.

        2000-01-04  Geoff Keating  <geoffk@cygnus.com>

        * rs6000.c: Correct comment, the `minimal' TOCs are actually
        one per translation unit, not one per function.
        (output_toc): Also do duplicate constant elimination
        for per-translation-unit TOCs.

        * rs6000.md (nonlocal_goto_receiver): Put it back as before.  Add
        a comment explaining _exactly_ when this pattern gets used.
        (builtin_setjmp_receiver): New pattern for better clarity.
        (init_v4_pic): Move it into a section dealing with TOC registers.

        1999-12-30  Geoff Keating  <geoffk@cygnus.com>

        * rs6000.c (toc_hash_table): New variable.
        (rs6000_hash_constant): New function.
        (toc_hash_function): New function.
        (toc_hash_eq): New function.
        (toc_hash_mark_entry): New function.
        (toc_hash_mark_table): New function.
        (output_toc): Don't output duplicate TOC entries in
        a single file.
        (rs6000_add_gc_roots): Add the hash table as a GC root.
        * t-aix43: Move AR_FOR_TARGET and CLIB here from x-aix43,
        where they clearly shouldn't be.  This may need to be fixed
        later when there is a GNU ar for AIX.
        * x-aix43: Don't define CLIB or AR_FOR_TARGET.
        Don't define BOOT_LDFLAGS as it is now not necessary.

        1999-12-29  Geoff Keating  <geoffk@cygnus.com>

        * rs6000.c (rs6000_build_va_list): Use 'char *' rather than 'void *'
        for va_list on AIX.  Use unsigned_char_type_node rather than
        constructing our own version on svr4.

        1999-12-17  Geoff Keating  <geoffk@cygnus.com>

        * tramp.asm (__trampoline_size): Delete CYGNUS LOCAL comment,
        since patently it's not.

        1999-12-08  Geoff Keating  <geoffk@cygnus.com>

        * config/rs6000/rs6000.md (nonlocal_goto_receiver): Turn into
        define_expand/define_insn pair, and handle restore of the
        SVR4 -fpic register.

Wed Mar 15 15:43:38 2000  Jeffrey A Law  (law@cygnus.com)

        * acconfig.h (HAVE_GAS_WEAK): New define.
        * configure.in (assembler weak support): Check for .weak support.
        * config.in, configure: Rebuilt.
        * pa/som.h (MAKE_DECL_ONE_ONLY, ASM_WEAKEN_LABEL): Only define if
        HAVE_GAS_WEAK is defined.

2000-03-15  Nick Clifton  <nickc@cygnus.com>

        * config/arm/arm.c (arm_output_epilogue): Do not pass %c to
        asm_fprintf().

2000-03-15  Zack Weinberg  <zack@wolery.cumb.org>

        * cppfiles.c (open_include_file): New function.
        (find_include_file, cpp_read_file): Use it.

2000-03-15  Jason Merrill  <jason@casey.cygnus.com>

        * cpphash.c (dump_hash_helper): Take the slot, not the element.

Wed Mar 15 14:28:54 2000  Jason Eckhardt  <jle@cygnus.com>

        * flow.c (verify_flow_info): Check for unconditional return.

Wed Mar 15 11:34:27 2000  Jim Wilson  <wilson@cygnus.com>

        * config/ia64/ia64.md (restore_stack_nonlocal): New.
        * config/ia64/lib1funcs.asm (__ia64_nonlocal_goto): Delete padding nop.
        (__ia64_restore_stack_nonlocal): New.
        * config/ia64/t-ia64 (LIB1ASMFUNCS): Add __restore_stack_nonlocal.

2000-03-15  Alexandre Oliva  <oliva@lsd.ic.unicamp.br>

        * cpphash.c (collect_formal_parameters): Do not complain about
        parameter names that just start with `__VA_ARGS__'.

Wed Mar 15 13:26:58 MET 2000  Jan Hubicka  <jh@suse.cz>

        * i386.md (movhi_1): Promote movw imm, reg to movl imm, reg and
        movw reg, reg to movzwl reg, reg on PARTIAL_REGISTER_STALL machines.
        * i386.c (pentiumpro_cost): Set mul cost to 4.
        (x86_use_movx): Set for PPro.

Wed Mar 15 13:07:05 MET 2000  Jan Hubicka  <jh@suse.cz>

        * i386.md (ix86_compute_frame_size): stack_alignment_needed is
        STACK_BOUNDARY for empty frames now.

2000-03-14  Mark Mitchell  <mark@codesourcery.com>

        * stor-layout.c (layout_union): Remove.
        (layout_union_field): New function, split out from layout_union.
        (finish_union_layout): Likewise.
        (layout_field): Handle unions by calling layout_union_field.
        (finish_record_layout): Handle unions.
        (layout_type): Combine RECORD_TYPE, UNION_TYPE, and
        QUAL_UNION_TYPE handling.

Wed Feb 23 13:00:06 CET 2000  Jan Hubicka  <jh@suse.cz>

        * flow.c (fixup_reorder_chain): Avoid double labels in the basic block;
        end of basic block is jump_insn, not barrier; use create_basic_block
        instead of creating basic block by hand.

2000-03-14  Jason Eckhardt  <jle@cygnus.com>

        * flow.c (reorder_basic_blocks): Account for barriers when writing
        over NEXT_INSN (last_bb->end).
        (verify_flow_info): Add check for missing barriers.

2000-03-14  Greg McGary  <gkm@gnu.org>

        * c-lex.h (enum rid): Add RID_BOUNDED & RID_UNBOUNDED.
        * c-lex.c (init_lex): Handle RID_BOUNDED & RID_UNBOUNDED.
        * c-parse.gperf (__bounded, __bounded__, __ptrbase, __ptrbase__,
        __ptrextent, __ptrextent__, __ptrvalue, __ptrvalue__,
        __unbounded, __unbounded__): New keywords.
        * c-parse.in (PTR_VALUE PTR_BASE PTR_EXTENT): New tokens.
        * c-parse.y, c-parse.c, c-parse.h: Regenerate.
        * objc/objc-parse.y, objc/objc-parse.c: Regenerate.

2000-03-14  Bernd Schmidt  <bernds@cygnus.co.uk>

        * cselib.h: New file.
        * alias.c: Include "cselib.h".
        (fixed_scalar_and_varying_struct_p): Accept the addresses of the
        MEMs as two new arguments.
        (get_addr): New static function.
        (find_base_term): Handle VALUEs.
        (memrefs_conflict_p): Likewise.
        (true_dependence): Call get_addr on the addresses.
        Call fixed_scalar_and_varying_struct_p with addresses that have been
        passed through get_addr and canon_rtx.
        (write_dependence_p): Move DIFFERENT_ALIAS_SETS_P test for consistency
        with true_dependence.
        Call get_addr on the addresses; don't call canon_rtx on the MEMs.
        * loop.c: Include "cselib.h".
        (load_mems): Process extended basic block that enters the loop with
        cselib.  Use that information to change initialization of the shadow
        register so that a constant equivalence is seen by later passes.
        * reload1.c: Include "cselib.h".
        (reload_cse_invalidate_regno): Delete function.
        (reload_cse_mem_conflict_p): Likewise.
        (reload_cse_invalidate_mem): Likewise.
        (reload_cse_invalidate_rtx): Likewise.
        (reload_cse_regno_equal_p): Likewise.
        (reload_cse_check_clobber): Likewise.
        (reload_cse_record_set): Likewise.
        (reg_values): Delete static variable.
        (invalidate_regno_rtx): Likewise.
        (reload_cse_delete_noop_set): New static function.
        (reload_cse_simplify): New static function, broken out of
        reload_cse_regs_1.
        (reload_cse_noop_set_p): Delete unused argument INSN.
        Just call rtx_equal_for_cselib_p on set source and destination.
        (reload_cse_regs_1): Break out some code into reload_cse_simplify and
        reload_cse_delete_noop_set.  Delete code to keep track of values; use
        cselib functions instead.  Delete code to push/pop obstacks.
        (reload_cse_simplify_set): Use cselib to find equivalent values.
        Delete code to push/pop obstacks.
        (reload_cse_simplify_operands): Likewise.
        * rtl.def (VALUE): New rtx code.
        * rtl.h (union rtunion_def): New elt rt_cselib.
        (X0CSELIB, CSELIB_VAL_PTR): New macros.
        * simplify_rtx.c: Include "ggc.h", "obstack.h", "cselib.h".
        (new_elt_list, new_elt_loc_list, unchain_one_value, clear_table,
        unchain_one_elt_list, unchain_one_elt_loc_list, check_useless_values,
        discard_useless_locs, discard_useless_values, entry_and_rtx_equal_p,
        hash_rtx, new_cselib_val, add_mem_for_addr, get_value_hash,
        cselib_lookup_mem, cselib_subst_to_values, cselib_invalidate_regno,
        cselib_mem_conflict_p, cselib_invalidate_mem, cselib_invalidate_rtx,
        cselib_record_set, cselib_record_sets): New static functions.
        (cselib_lookup, cselib_update_varray_sizes, cselib_init,
        cselib_finish, cselib_process_insn, rtx_equal_for_cselib_p,
        references_value_p): New functions.
        (MAX_USELESS_VALUES, REG_VALUES): New macros.
        (table, cselib_current_insn, next_unknown_value, cselib_nregs,
        n_useless_values, reg_values, callmem, cselib_obstack,
        cselib_startobj, empty_vals, empty_elt_lists, empty_elt_loc_lists):
        New static variables.
        * varray.h (union varray_data_tag): New elt te.
        (VARRAY_ELT_LIST_INIT, VARRAY_ELT_LIST): New macros.
        * Makefile.in (reload1.o, loop.o, simplify-rtx.o, alias.o): Update
        dependencies.

2000-03-14  Nick Clifton  <nickc@cygnus.com>

        * gcc.c (do_spec_1): Catch the case where %* is used in a
        substitution pattern, but it has not been initialised.
        Issue a meaningful error message if an unrecognised operator
        is encountered in a spec string.

2000-03-14  Richard Earnshaw <rearnsha@arm.com>

        * function.c (prepare_function_start): Correctly initialize
        cfun->stack_alignment_needed.

2000-03-14  Zack Weinberg  <zack@wolery.cumb.org>

        * cppfiles.c (find_include_file): Don't assume nshort is a
        substring of name.

Tue Mar 14 08:42:21 2000  Jeffrey A Law  (law@cygnus.com)

        * configure.in (hppa configurations): Add pa32-regs.h to the
        list of tm files as appropriate.
        * configure: Rebuilt.
        * pa.c (compute_frame_size): Remove explicit knowledge about FP
        register numbering.
        (hppa_expand_prologue, hppa_expand_epilogue): Likewise.
        (fmpyaddoperands, fmpysuboperands): Likewise.
        * pa.h: Remove various definitions which depend on knowing
        how registers are numbered.
        * pa32-regs.h: New file with PA32 register numbering specific
        definitions.

2000-03-14  Richard Henderson  <rth@cygnus.com>

        * regmove.c (combine_stack_adjustments): New.
        (stack_memref_p, single_set_for_csa): New.
        (free_csa_memlist, record_one_stack_memref): New.
        (try_apply_stack_adjustment): New.
        (combine_stack_adjustments_for_block): New.
        * rtl.h (combine_stack_adjustments): Declare.
        * toplev.c (rest_of_compilation): Call it.

        * i386.md: Revert 2000-01-16 change.

2000-03-14  Martin v. Löwis  <loewis@informatik.hu-berlin.de>

        * gccbug.in: Add web category, gcc specific classes.

2000-03-14  Nathan Sidwell  <nathan@codesourcery.com>

        * stor-layout.c (finalize_record_size): Fix typo.

2000-03-14  Stan Shebs  <shebs@apple.com>

        * c-typeck.c (c_alignof): Error on incomplete types.
        * extend.texi (Alignment): Document this.

2000-03-13  Zack Weinberg  <zack@wolery.cumb.org>

        * cppfiles.c: Include mkdeps.h.
        (find_include_file, read_include_file): Remove _cpp_ prefix
        from name, make static.
        (_cpp_execute_include): New function, broken out of
        do_include.

        * cpplib.c: Don't include mkdeps.h.
        (struct directive): Remove type field. Reorder entries.  The
        function takes only one argument.
        (struct if_stack): Make type field an int.
        (directive_table): Rename to dtable.  Generate it, the
        prototypes of the directive handlers, and the enum for the
        directive numbers, from a template macro.
        (do_ifndef, do_include_next, do_import): New functions.
        (do_define, do_include, do_endif, do_ifdef, do_if, do_else,
        do_undef, do_line, do_elif, do_error, do_pragma, do_warning,
        do_ident, do_assert, do_unassert, do_sccs): Take only one
        argument.
        (do_sccs): Define always, but alter behavior based on
        SCCS_DIRECTIVE.
        (_cpp_handle_directive, consider_directive_while_skipping):
        Restructure for new directive table layout.

        (pass_thru_directive): Take a directive number, not a pointer
        to a struct directive.
        (parse_include): New function, broken out of do_include.
        (do_include, do_import, do_include_next): Use parse_include
        and _cpp_execute_include.
        (do_elif, do_else): Test for T_ELSE specifically when checking
        for #elif/#else after #else.
        (parse_ifdef): New function, broken out of do_ifdef.
        (validate_else): Expect a name arg without a leading #.
        (if_directive_name): Delete.
        (cpp_define, cpp_assert, cpp_undef, cpp_unassert): Call
        directive handlers with only one argument.

        * cpphash.h: Update prototypes.
        (enum node_type): Remove entries for directives.
        * Makefile.in: Update dependencies.

        * cpphash.c (dump_hash_helper): Only dump nodes of type
        T_MACRO.  Emit a newline after each definition.

2000-03-14  Martin v. Löwis  <loewis@informatik.hu-berlin.de>

        * gccbug.in: New file.
        * configure.in (all_outputs): Add gccbug.
        * Makefile.in (install-common): Install gccbug.
        (GCCBUG_INSTALL_NAME): New variable.
        * configure: Rebuilt.

2000-03-13  Jason Merrill  <jason@casey.cygnus.com>

        * function.c (put_var_into_stack): Use type_for_mode to calculate
        part_type.  Use MEM_SET_IN_STRUCT_P.
        * expr.c (store_field): Handle CONCAT.
        (store_constructor): Use fields_length.
        * tree.c (fields_length): New fn.
        * tree.h: Declare it.

2000-03-13  Zack Weinberg  <zack@wolery.cumb.org>

        * Makefile.in (LIBCPP_OBJS): Add cpplex.o.
        (cpplex.o): New target.
        * po/POTFILES.in: Add cpplex.c.

        * cpplex.c (_cpp_grow_token_buffer, null_cleanup,
        cpp_push_buffer, cpp_pop_buffer, cpp_scan_buffer,
        cpp_expand_to_buffer, cpp_buf_line_and_col, cpp_file_buffer,
        skip_block_comment, skip_line_comment, skip_comment,
        copy_comment, _cpp_skip_hspace, _cpp_skip_rest_of_line,
        _cpp_parse_name, skip_string, parse_string,
        _cpp_parse_assertion, cpp_get_token, cpp_get_non_space_token,
        _cpp_get_directive_token, find_position,
        _cpp_read_and_prescan, _cpp_init_input_buffer): Move here.
        (maybe_macroexpand, _cpp_lex_token): New functions.

        * cpplib.c (SKIP_WHITE_SPACE, eval_if_expr, parse_set_mark,
        parse_goto_mark): Delete.
        (_cpp_handle_eof): New function.
        (_cpp_handle_directive): Rename from handle_directive.
        (_cpp_output_line_command): Rename from output_line_command.
        (do_if, do_elif): Call _cpp_parse_expr directly.
        * cppfiles.c (_cpp_read_include_file): Don't call
        init_input_buffer here.
        * cpphash.c (quote_string): Move here, rename _cpp_quote_string.
        * cppexp.c (_cpp_parse_expr): Diddle parsing_if_directive
        here; pop the token_buffer and skip the rest of the line here.
        * cppinit.c (cpp_start_read): Call _cpp_init_input_buffer
        here.

        * cpphash.h (CPP_RESERVE, CPP_IS_MACRO_BUFFER, ACTIVE_MARK_P):
        Define here.
        (CPP_SET_BUF_MARK, CPP_GOTO_BUF_MARK, CPP_SET_MARK,
        CPP_GOTO_MARK): New macros.
        (_cpp_quote_string, _cpp_parse_name, _cpp_skip_rest_of_line,
        _cpp_skip_hspace, _cpp_parse_assertion, _cpp_lex_token,
        _cpp_read_and_prescan, _cpp_init_input_buffer,
        _cpp_grow_token_buffer, _cpp_get_directive_token,
        _cpp_handle_directive, _cpp_handle_eof,
        _cpp_output_line_command): Prototype them here.
        * cpplib.h (enum cpp_token): Add CPP_MACRO.
        (CPP_RESERVE, get_directive_token, cpp_grow_buffer,
        quote_string, output_line_command): Remove.

2000-03-13  Bernd Schmidt  <bernds@cygnus.co.uk>

        * stmt.c (expand_end_case): RANGE may be signed, and when checking
        whether it is too large we must also verify that it isn't negative.

2000-03-13  Jakub Jelinek  <jakub@redhat.com>

        * config/sparc/sparc.md: Remove all traces of TARGET_LIVE_G0.
        (movsi_zero_liveg0): Remove.
        (movsf_insn_novis_liveg0): Remove.
        (negsi2): Remove.
        (negsi2_not_liveg0): Rename to negsi2.
        (one_cmplsi2): Remove.
        (one_cmplsi2_not_liveg0): Rename to one_cmplsi2.
        (one_cmplsi2_liveg0): Remove.
        * config/sparc/sparc.h (TARGET_LIVE_G0, TARGET_BROKEN_SAVERESTORE,
        MASK_LIVE_G0, MASK_BROKEN_SAVERESTORE): Remove.
        (CONDITIONAL_REGISTER_USAGE): Remove TARGET_LIVE_G0 if.
        (PREDICATE_CODES): Remove zero_operand.
        * config/sparc/sparc.c: Remove all traces of TARGET_LIVE_G0 and
        TARGET_BROKEN_SAVERESTORE.
        (zero_operand): Remove.
        * config/sparc/splet.h (SUBTARGET_SWITCHES): Remove -mlive-g0,
        -mno-live-g0, -mbroken-saverestore and -mno-broken-saverestore
        options.
        (SUBTARGET_OVERRIDE_OPTIONS): Remove.
        * config/sparc/linux-aout.h (TARGET_LIVE_G0,
        TARGET_BROKEN_SAVERESTORE): Remove.
        * config/sparc/linux.h (TARGET_LIVE_G0, TARGET_BROKEN_SAVERESTORE):
        Remove.
        * config/sparc/linux64.h (TARGET_LIVE_G0, TARGET_BROKEN_SAVERESTORE):
        Remove.
        * config/sparc/sol2.h (TARGET_LIVE_G0, TARGET_BROKEN_SAVERESTORE):
        Remove.

        * config/sparc/sparc.md (return_df_no_fpu): New pattern.

2000-03-13  Zack Weinberg  <zack@wolery.cumb.org>

        * cpplib.c (do_pragma_implementation): Fix off-by-one error
        truncating a string.  Don't assume tokens are nul terminated.
        Problem noted by Andreas Jaeger <aj@suse.de>

2000-03-13  Jason Merrill  <jason@casey.cygnus.com>

        * dwarf2out.c (add_name_and_src_coords_attributes): Only add
        DW_AT_MIPS_linkage_name for TREE_PUBLIC decls.
        (ASM_OUTPUT_DWARF_ADDR_CONST): Don't output trailing newline.

2000-03-13  Richard Earnshaw <rearnsha@arm.com>

        * stor-layout.c (new_record_layout_info): Fix typo inside ifdef
        STRUCTURE_SIZE_BOUNDARY.

2000-03-13  Mark Mitchell  <mark@codesourcery.com>

        * tree.h (record_layout_info_s): New structure.
        (record_layout_info): New type.
        (new_record_layout_info): New function.
        (layout_field): Likewise.
        (finish_record_layout): Likewise.
        * stor-layout.c (layout_record): Remove.
        (new_record_layout_info): New function.
        (layout_field): New function, broken out from layout_record.
        (finalize_record_size): Likewise.
        (compute_record_mode): Likewise.
        (finalize_type_size): New function, broken out from layout_type.
        (finish_record_layout): Likewise.
        (layout_type): Use them.

2000-03-12  Zack Weinberg  <zack@wolery.cumb.org>

        * cpphash.c: Don't include version.h.
        (special_symbol) [case T_VERSION]: Look for the string in
        hp->value.cpval; don't use version_string.
        * cppinit.c (initialize_builtins): Set hp->value.cpval for
        __VERSION__ to version_string.
        * Makefile.in (cpphash.o): Update deps.

2000-03-12  Zack Weinberg  <zack@wolery.cumb.org>

        Convert cpplib to use libiberty/hashtab.c.

        * cpplib.h (struct cpp_reader): Make hashtab and
        all_include_files of type 'struct htab *'.  Delete HASHSIZE
        and ALL_INCLUDE_HASHSIZE macros.

        * cpphash.h: Update prototypes.
        (struct hashnode): Remove next, prev, and bucket_hdr members.
        Make length a size_t.  Add hash member.
        (struct ihash): Remove next member.  Add hash member.  Make
        name a flexible array member.

        * cppfiles.c: Include hashtab.h.
        (include_hash): Delete.
        (IHASHSIZE): New macro.
        (hash_IHASH, eq_IHASH, _cpp_init_include_hash): New functions.
        (cpp_included): Do the hash lookup here.
        (_cpp_find_include_file): Rewrite.
        (cpp_read_file): Put the "fake" hash entry into the hash
        table.  Honor the control_macro, if it turns out we've seen
        the file before.  Don't push the buffer here.
        (_cpp_read_include_file): Push the buffer here.
        (OMODES): New macro.  Use it whenever we call open(2).

        * cpphash.c: Include hashtab.h.
        (hash_HASHNODE, eq_HASHNODE, del_HASHNODE, dump_hash_helper,
        _cpp_init_macro_hash, _cpp_dump_macro_hash, _cpp_make_hashnode,
        _cpp_lookup_slot): New functions.
        (HASHSIZE): new macro.
        (hashf, _cpp_install, _cpp_delete_macro): Delete.
        (_cpp_lookup): Use hashtab.h routines.

        * cppinit.c: Include hashtab.h.
        (cpp_reader_init): Call _cpp_init_macro_hash and
        _cpp_init_include_hash.  Don't allocate hashtab directly.
        (cpp_cleanup): Just call htab_delete on pfile->hashtab and
        pfile->all_include_files.
        (initialize_builtins): Use _cpp_make_hashnode and
        htab_find_slot to add hash entries.
        (cpp_finish): Just call _cpp_dump_macro_hash.
        * cpplib.c: Include hashtab.h.
        (do_define): Use _cpp_lookup_slot and _cpp_make_hashnode to
        create hash entries.
        (do_pragma_poison, do_assert): Likewise.
        (do_include): Don't push the buffer here.  Don't increment
        system_include_depth unless _cpp_read_include_file succeeds.
        (do_undef, do_unassert): Use _cpp_lookup_slot and htab_clear_slot
        or htab_remove_elt.
        (do_pragma_implementation): Use alloca to create copy.

        * Makefile.in: Update dependencies.

2000-03-12  Kaveh R. Ghazi  <ghazi@caip.rutgers.edu>

        * cppinit.c (cl_directive_handler): More K&R fixing.

Sat Mar 11 23:54:26 2000  Jim Wilson  <wilson@cygnus.com>

        * config/ia64/ia64.c (ia64_compute_frame_size): Align size to
        STACK_BOUNDARY.
        * config/ia64/ia64.h (REGISTER_MOVE_COST): Add missing parentheses.

2000-03-11  Kaveh R. Ghazi  <ghazi@caip.rutgers.edu>

        * cppinit.c (no_arg, no_ass, no_dir, no_fil, no_mac, no_pth):
        Change from char[] to macros.

2000-03-12  Neil Booth  <NeilB@earthling.net>

        * cppinit.c (cpp_start_read): Update indirect function
        call to K&R C.

Sat Mar 11 16:18:12 2000  Jim Wilson  <wilson@cygnus.com>

        * config/ia64/ia64.h (ADDITIONAL_REGISTER_NAMES): Fix typo in loc79
        entry.

        * config/ia64/ia64-protos.h, config/ia64/ia64.c, config/ia64/ia64.h,
        config/ia64/ia64.md, config/ia64/xm-ia64.h: Fix copyright messages.

2000-03-11  Neil Booth  <NeilB@earthling.net>

        * cppinit.c (struct pending option): Replace undef with a
        pointer to a directive handling routine.
        (struct cpp_pending): Replace separate assert_ and define_
        lists with one directive_ list.
        (new_pending_define): Rename new_pending_directive. Extra
        argument is the directive's handling routine.
        (handle_option): Update to use new_pending_directive.

2000-03-11  Neil Booth  <NeilB@earthling.net>

        * cppfiles.c (file_cleanup, _cpp_find_include_file,
        remap_filename, _cpp_read_include_file, actual_directory,
        hack_vms_include_specification): Replace bcopy(), index() etc
        calls.  Add casts to some allocations.  Make some variables
        pointers to const [unsigned] char.
        * cpphash.c (_cpp_install, macro_cleanup, collect_expansion,
        collect_formal_parameters): Similarly.
        * cppinit.c (struct pending_option, append_include_chain,
        cpp_options_init, cpp_reader_init, initialize_standard_includes,
        cpp_start_read, new_pending_define, handle_option): Similarly.
        * cpplib.c (cpp_define, copy_comment, do_define, do_include,
        do_undef, do_error, do_warning, do_pragma, do_pragma_once,
        do_pragma_implementation, detect_if_not_defined,
        do_ifdef, skip_if_group, cpp_get_token, parse_string,
        do_assert, do_unassert): Similarly.
        * cpplib.h (cpp_buffer, cpp_options): Update types.  Update
        function prototypes.
        * mkdeps.c (deps_add_target, deps_add_dep): cast allocations.

2000-03-10  Richard Henderson  <rth@cygnus.com>

        * builtins.c (expand_builtin_strlen): Revert last change.
        Use emit_insn_before if we're at the beginning of a sequence.

2000-03-10  Jason Merrill  <jason@casey.cygnus.com>

        * builtins.c (expand_builtin_strlen): Make sure that we have something
        at the beginning of the sequence.

        * toplev.c (rest_of_compilation): Also set TREE_NOTHROW for
        deferred inlines.

        * invoke.texi (C++ Dialect Options): Document -fno-enforce-eh-specs.

2000-03-10  Richard Henderson  <rth@cygnus.com>

        * except.c (can_throw): Use INTVAL on a CONST_INT.
        (reachable_handlers): Likewise.
        * flow.c (count_basic_blocks, find_basic_blocks_1): Likewise.

2000-03-10  Andreas Jaeger  <aj@suse.de>

        * config/mips/linux.h: Undefine MD_EXEC_PREFIX and
        MD_STARTFILE_PREFIX since those are not needed on linux.
        (ASM_FILE_START): New, from mips/gnu.h.

2000-03-09  Richard Henderson  <rth@cygnus.com>
            Alex Samuel  <samuel@codesourcery.com> and others

        * Makefile.in (ssa.o): New rule.
        (OBJS): Add ssa.o.
        (STAGESTUFF): Add *.ssa and *.ussa.
        (mostlyclean): Delete *.ssa, *.ussa, */*.ssa, */*.ussa.
        * rtl.def (PHI): New RTL expression.
        * rtl.h (clear_log_links): New declaration.
        (convert_to_ssa): Likewise.
        (convert_from_ssa): Likewise.
        * flow.c (split_edge): If the entry node falls through to the
        split edge's source block, split the entry edge.
        (clear_log_links): New function.
        * toplev.c (ssa_dump): New variable.
        (flag_ssa): Likewise.
        (f_options): Add "ssa".
        (compile_file): Create SSA dump files.
        (rest_of_compilation): Go to and from SSA if enabled.
        (decide_d_option): Handle -de for SSA dump files.
        * ssa.c: New file.

Thu Mar  9 20:01:38 2000  Jim Wilson  <wilson@cygnus.com>

        * expr.c (expand_assignment): For a CALL_EXPR, special case PARM_DECL
        same as VAR_DECL.

2000-03-09  Benjamin Kosnik  <bkoz@cygnus.com>

        * config/alpha/linux.h (WCHAR_TYPE): Make consistent.

Thu Mar  9 18:10:02 2000  Jeffrey A Law  (law@cygnus.com)

        * config/pa/pa-hpux10.h (LIB_SPEC): Correct typo in !p case.
        (MD_STARTFILE_PREFIX_1): New macro.

2000-03-09  Robert Lipe  <robertl@sco.com>

        * config/ia64/ia64.c: Include system.h.

2000-03-09  Jason Merrill  <jason@casey.cygnus.com>

        * except.c (nothrow_function_p): If -fno-exceptions, just return.
        (init_eh_nesting_info): Likewise.

        * tree.h (struct tree_common): Rename raises_flag to nothrow_flag.
        (TREE_NOTHROW): Rename from TREE_RAISES.
        * toplev.c (rest_of_compilation): Set it.
        * print-tree.c (print_node): Adjust.
        * tree.c (stabilize_reference, build, build1): Don't set TREE_RAISES.
        (stabilize_reference_1, get_unwidened, get_narrower): Likewise.
        * calls.c (emit_call_1): Add 'nothrow' parm.  Add
        REG_EH_REGION note as appropriate.
        (libfunc_nothrow): New fn.
        (emit_library_call, emit_library_call_value): Use it.
        (expand_call): Check TREE_NOTHROW.

        * varasm.c (make_decl_rtl): Skip initial '*' when setting
        DECL_ASSEMBLER_NAME.

2000-03-09  Andreas Jaeger  <aj@suse.de>

        * mips/linux.h (NO_IMPLICIT_EXTERN_C): Define.
        (TARGET_MEM_FUNCTIONS): Define.

2000-03-09  Jason Merrill  <jason@casey.cygnus.com>

        * i386.c (ix86_valid_type_attribute_p): Use compare_tree_int.

        * except.c (can_throw): See through a SEQUENCE.
        (nothrow_function_p): New fn.
        * except.h: Declare it.
        * function.c (current_function_nothrow): New var.
        (prepare_function_start): Initialize it.
        * output.h: Declare it.
        * toplev.c (rest_of_compilation): Set it.
        * dwarf2out.c (dwarf2out_begin_prologue): Use it.

2000-03-09  Zack Weinberg  <zack@wolery.cumb.org>

        * cpphash.c (collect_formal_parameters): strncmp returns 0 for
        match.  (cpp_compare_defs): Count the nul separator when
        advancing over argument names.

2000-03-09  Bernd Schmidt  <bernds@cygnus.co.uk>

        * recog.c (preprocess_constraints): Matching constraints affect
        same alternative/different operand, not same operand/different
        alternative.

        * reload1.c (eliminate_regs_in_insn): Handle additions of eliminable
        register and a constant specially.

2000-03-08  Kaveh R. Ghazi  <ghazi@caip.rutgers.edu>

        * libgcc2.h: New file.
        * libgcc2.c: Move macros, typedefs and prototypes to libgcc2.h.

Wed Mar  8 16:19:42 2000  Jim Wilson  <wilson@cygnus.com>

        * configure.in (ia64*-*-elf*, ia64*-*-linux*): New.
        * configure: Regenerate.
        * config/ia64: New.

2000-03-08  Zack Weinberg  <zack@wolery.cumb.org>

        * Makefile.in (LIBCPP_DEPS): New macro.
        (cpplib.o, cpphash.o, cpperror.o, cppexp.o, cppfiles.o): Use
        it to declare deps.
        * cpperror.c: Include cpphash.h.
        * cppexp.c: Include cpphash.h.  Remove MULTIBYTE_CHARS
        dingleberry.
        (lex): Don't use CPP_WARN_UNDEF.
        (_cpp_parse_expr): Return an int, the truth value.
        * cppfiles.c: Include cpphash.h.
        (_cpp_merge_include_chains): Move to cppinit.c and make static.
        * cppinit.c (include_defaults_array): Disentangle.
        (cpp_cleanup): Don't free the if stack here.
        (cpp_finish): Pop off all buffers, not just one.
        * cpplib.c (eval_if_expr): Return int.
        (do_xifdef): Rename do_ifdef.
        (handle_directive): Don't use CPP_PREPROCESSED.
        (cpp_get_token): Don't use CPP_C89.
        * fix-header.c: Don't use CPP_OPTIONS.

        * cpplib.h: Move U_CHAR, enum node_type, struct
        file_name_list, struct ihash, is_idchar, is_idstart,
        is_numchar, is_numstart, is_hspace, is_space, CPP_BUF_PEEK,
        CPP_BUF_GET, CPP_FORWARD, CPP_PUTS, CPP_PUTS_Q, CPP_PUTC,
        CPP_PUTC_Q, CPP_NUL_TERMINATE, CPP_NUL_TERMINATE_Q,
        CPP_BUMP_BUFFER_LINE, CPP_BUMP_LINE, CPP_PREV_BUFFER,
        CPP_PRINT_DEPS, CPP_TRADITIONAL, CPP_PEDANTIC, and prototypes
        of _cpp_simplify_pathname, _cpp_find_include_file,
        _cpp_read_include_file, and _cpp_parse_expr to cpphash.h.
        Move struct if_stack to cpplib.c.  Move struct cpp_pending to
        cppinit.c.
        Change all uses of U_CHAR to be unsigned char instead.
        Delete CPP_WARN_UNDEF, CPP_C89, and CPP_PREPROCESSED.

2000-03-08  Jason Merrill  <jason@casey.cygnus.com>

        * dwarf2out.c (dw_fde_struct): Add 'nothrow'.
        (dwarf2out_begin_prologue): Set it.
        (output_call_frame_info): Don't emit EH unwind info for leaves.

        * flow.c (count_basic_blocks, find_basic_blocks_1): A rethrow
        can occur outside of an EH region.
        * except.c: Correct comments about rethrow behavior.
        (rethrow_symbol_map): Do nothing if !flag_new_exceptions.

2000-03-08  Andrew MacLeod  <amacleod@cygnus.com>

        * flow.c (make_edges): Always call make_eh_edge for calls.

2000-03-08  Zack Weinberg  <zack@wolery.cumb.org>

        * cpplib.h (parse_underflow_t, CPP_NULL_BUFFER): Delete.
        (struct cpp_buffer): Remove fname and underflow fields.
        (struct cpp_reader): Remove get_token field.
        (struct include_hash): Rename to struct ihash.  Add typedef to
        IHASH.
        (struct if_stack): Remove fname field.
        (IF_STACK_FRAME): Rename to IF_STACK.

        * cpperror.c (print_containing_files): Trust that there are no
        macro buffers below the top file buffer.
        * cppfiles.c: Replace all references to 'struct include_hash'
        with 'IHASH'.  Rename initialize_input_buffer to
        init_input_buffer.  Don't set or reference cpp_buffer->fname,
        use buffer->ihash->name instead.
        * cpphash.c (special_symbol): Use cpp_file_buffer.  Use NULL
        not CPP_NULL_BUFFER.
        * cppinit.c: Use NULL not CPP_NULL_BUFFER, IF_STACK not
        IF_STACK_FRAME, IHASH not struct include_hash.
        * cpplib.c: Rename eval_if_expression to eval_if_expr.  Remove
        null_underflow.  Use IF_STACK not IF_STACK_FRAME, IHASH not
        struct include_hash, NULL not CPP_NULL_BUFFER.  Remove all
        references to cpp_buffer->fname (delete entirely, or use
        ->ihash->name instead) and IF_STACK->fname.
        (cpp_push_buffer): Don't set new->underflow.
        (do_include): Use cpp_file_buffer.

        * cpphash.c (collect_formal_parameters): Remove duplicate
        increment of argslen.  Pedwarn in C99 mode if __VA_ARGS__ is
        used as a macro argument name.  Don't append "..." to namebuf
        for varargs macros.  After we're done scanning, go through
        namebuf and make it NUL separated, not comma separated.
        (_cpp_compare_defs): Remove register tag from variables.
        Expect defn->argnames to be NUL separated.
        (_cpp_dump_definition): Expect defn->argnames to be NUL
        separated and in forward order.
        * cpphash.h: Update documentation of argnames field.

2000-03-08  Richard Henderson  <rth@cygnus.com>

        * builtins.c (expand_builtin_strlen): Be prepared for strlensi
        to fail.  Don't pre-expand the source operand.

        * i386.md (strlensi): Initialize eoschar and align before use.

2000-03-08  Jason Merrill  <jason@casey.cygnus.com>

        * expr.c (expand_expr, case ARRAY_REF): Still check for missing
        CONSTRUCTOR element.

2000-03-08  Gavin Romig-Koch  <gavin@cetus.cygnus.com>

        * mips.c (mips_expand_prologue): If the last
        named argument is the vararg marker "va_list", treat it as
        an unnamed argument.

2000-03-08  Clinton Popetz  <cpopetz@cygnus.com>

        * dbxout.c (dbxout_parms): When correcting for promoted
        big-endian parameters, use the mode of the DECL_RTL rather
        than UNITS_PER_WORD.

2000-03-08  Nathan Sidwell  <nathan@codesourcery.com>

        * c-common.h (make_fname_decl): Declare.
        * c-common.c (make_fname_decl): Define.
        (declare_hidden_char_array): Remove.
        (declare_function_name): Use make_fname_decl.
        * c-decl.c (c_make_fname_decl): New function.
        (init_decl_processing): Set make_fname_decl.

Tue Mar  7 23:50:31 2000  Jeffrey A Law  (law@cygnus.com)

        * cccp.c (handle_directive): Initialize backslash_newlines_p.

2000-03-07  Philipp Thomas  <pthomas@suse.de>

        * po/POTFILES.in: Remove cppalloc.c from file list.

2000-03-07  Steve Chamberlain  <sac@pobox.com>

        * pj.c (pj_expand_prologue): current_function->args_info is
        now current_function_args_info.

        * pj.h (STORE_FLAG_VALUE, USER_LABEL_PREFIX,
        LOCAL_LABEL_PREFIX, ASM_GENERATE_INTERNAL_LABEL,
        ASM_OUTPUT_INTERNAL_LABEL, ASM_OUTPUT_SKIP): Define.

2000-03-08  Michael Hayes  <m.hayes@elec.canterbury.ac.nz>

        * config/c4x/c4x.h (PUT_SDB_TYPE): Define so that the type info is
        output as hexadecimal rather than the default octal.

2000-03-07  Zack Weinberg  <zack@wolery.cumb.org>

        * cpphash.c (special_symbol): Fix thinko in previous commit.

2000-03-07  Neil Booth  <NeilB@earthling.net>

        * cppexp.c (struct operation, left_shift, right_shift,
        cpp_parse_expr): Change some "char"s to "U_CHAR"s, and some
        "int"s to "unsigned int"s.
        * cpplib.c (detect_if_not_defined, do_assert, do_unassert):
        Similarly.
        * cpplib.h: Update for above.
        * mkdeps.c (deps_init, deps_calc_target): Cast pointers
        returned from allocations.

        * cppinit.c (opt_comp, parse_options): New functions.
        (handle_option): Use parse_option to parse a single command
        line option, that possibly takes an argument.
        (cpp_handle_options): Sort the array of command line options on
        first invocation (non-ASCII hosts only).
        (print_help): Update.

2000-03-07  Zack Weinberg  <zack@wolery.cumb.org>

        * mkdeps.c (munge): Fix off-by-one bug and inconsistencies in
        backslash counting loops.  Problem noted by Matt Kraai <kraai@ghs.com>.

        * cppfiles.c (_cpp_find_include_file): Make sure ih->name is
        initialized.
        * cppinit.c (cpp_cleanup): Free imp->nshort also.

        * cpperror.c (cpp_print_containing_files,
        cpp_print_file_and_line, v_cpp_message): Rename to
        print_containing_files, print_file_and_line, and v_message.
        * cppexp.c (cpp_parse_expr, cpp_parse_escape, cpp_lex): Rename
        to _cpp_parse_expr, parse_escape, and lex.
        (parse_charconst): Remove broken multibyte support.
        * cppfiles.c (include_hash): Make static.
        (cpp_included): New function.
        (merge_include_chains, find_include_file, finclude,
        simplify_pathname): Rename to _cpp_merge_include_chains,
        _cpp_find_include_file, _cpp_read_include_file, and
        _cpp_simplify_pathname.
        * cpphash.c (cpp_lookup, free_definition, delete_macro,
        cpp_install, create_definition, macroexpand, compare_defs,
        dump_definition): Rename to _cpp_lookup, _cpp_free_definition,
        _cpp_delete_macro, _cpp_install, _cpp_create_definition,
        _cpp_macroexpand, _cpp_compare_defs, and _cpp_dump_definition.
        * cppinit.c (cpp_handle_option): Rename to handle_option, make
        static.
        * cpplib.c: Remove extern prototype of cpp_parse_expr.

        * cpphash.h: Update prototypes.
        * cpplib.h: Likewise.  Prototype _cpp_parse_expr here.

2000-03-07  Andrew Haley  <aph@cygnus.com>

        * config/mips/mips.h (PTRDIFF_TYPE): Revert broken change;
        PTRDIFF_TYPE should be based solely on Pmode.
        (SIZE_TYPE): ditto.

2000-03-07  Kaveh R. Ghazi  <ghazi@caip.rutgers.edu>

        * rtl.h (rtunion_def): Constify member `rtstr'.
        (emit_line_note_after, emit_line_note, emit_line_note_force,
        emit_note, decode_asm_operands): Constify.

        * cse.c (canon_hash): Likewise.

        * dbxout.c (dbxout_block): Likewise.

        * diagnostic.c (file_and_line_for_asm, v_error_for_asm,
        v_warning_for_asm): Likewise.

        * dwarfout.c (function_start_label): Likewise.

        * emit-rtl.c (emit_line_note_after, emit_line_note, emit_note,
        emit_line_note_force): Likewise.

        * final.c (last_filename, asm_insn_count, final_scan_insn,
        output_source_line): Likewise.

        * function.h (struct emit_status): Likewise.

        * gcse.c (hash_expr_1): Likewise.

        * genattr.c (gen_attr, main): Likewise.

        * genattrtab.c (struct function_unit, current_alternative_string,
        write_attr_valueq, n_comma_elts, next_comma_elt, attr_eq,
        attr_numeral, check_attr_test, check_attr_value,
        convert_set_attr_alternative, convert_set_attr,
        compute_alternative_mask, simplify_by_exploding, gen_attr,
        gen_unit): Likewise.

        * genflags.c (gen_insn): Likewise.

        * gengenrtl.c (type_from_format): Likewise.

        * genopinit.c (gen_insn): Likewise.

        * genoutput.c (n_occurrences, process_template, process_template):
        Likewise.

        * ggc-page.c (ggc_set_mark, ggc_mark_if_gcable, ggc_get_size):
        Likewise.

        * ggc-simple.c (ggc_set_mark, ggc_mark_if_gcable, ggc_get_size):
        Likewise.

        * ggc.h (ggc_mark_string, ggc_mark, ggc_mark_if_gcable,
        ggc_set_mark, ggc_get_size): Likewise.

        * objc/objc-act.c (build_module_descriptor, finish_objc): Likewise.

        * optabs.c (init_one_libfunc): Likewise.

        * output.h (assemble_start_function): Likewise.

        * recog.c (decode_asm_operands): Likewise.

        * toplev.c (rest_of_compilation): Likewise.

        * tree.h (emit_line_note_after, emit_line_note,
        emit_line_note_force): Likewise.

        * varasm.c (asm_output_bss, asm_output_aligned_bss,
        asm_emit_uninitialised, assemble_start_function,
        assemble_variable, const_hash, compare_constant_1,
        find_pool_constant, mark_constant_pool, assemble_alias): Likewise.

        * xcoffout.h (DBX_FINISH_SYMBOL): Likewise.

        * alpha/alpha.md (call_vms, call_value_vms): Likewise.

        * arm/aof.h (ASM_OUTPUT_ASCII): Likewise.

        * arm/aout.h (ASM_OUTPUT_ASCII): Likewise.

        * arm/arm-protos.h (output_ascii_pseudo_op, arm_dllexport_name_p,
        arm_dllimport_name_p): Likewise.

        * arm/arm.c (arm_encode_call_attribute, output_ascii_pseudo_op):
        Likewise.

        * arm/arm.h (ASM_OUTPUT_MI_THUNK): Likewise.

        * arm/elf.h (ASM_FINISH_DECLARE_OBJECT): Likewise.

        * arm/pe.c (arm_dllexport_name_p, arm_dllimport_name_p,
        arm_mark_dllexport, arm_mark_dllimport,
        arm_pe_encode_section_info): Likewise.

        * arm/telf.h (ASM_OUTPUT_DEF_FROM_DECLS,
        ASM_FINISH_DECLARE_OBJECT): Likewise.

        * arm/thumb.c (thumb_function_prologue): Likewise.

        * arm/thumb.h (ASM_OUTPUT_ASCII): Likewise.

        * avr/avr.h (ASM_FINISH_DECLARE_OBJECT): Likewise.

        * clipper/clix.h (ASM_OUTPUT_ASCII): Likewise.

        * fx80/fx80.h (ASM_OUTPUT_ASCII): Likewise.

        * i386/cygwin.h (ASM_OUTPUT_SECTION_NAME): Likewise.

        * i386/freebsd.h (ASM_FINISH_DECLARE_OBJECT): Likewise.

        * i386/i386-interix.h (ASM_OUTPUT_LIMITED_STRING,
        ASM_OUTPUT_ASCII, ASM_OUTPUT_SECTION_NAME): Likewise.

        * i386/i386-protos.h (asm_output_function_prefix): Likewise.

        * i386/i386.c (asm_output_function_prefix): Likewise.

        * i386/i386elf.h (ASM_OUTPUT_ASCII): Likewise.

        * i386/osfrose.h (ASM_FINISH_DECLARE_OBJECT): Likewise.

        * i386/ptx4-i.h (ASM_OUTPUT_ASCII): Likewise.

        * i386/sco5.h (ASM_FINISH_DECLARE_OBJECT,
        ASM_OUTPUT_LIMITED_STRING, ASM_OUTPUT_ASCII,
        ASM_OUTPUT_SECTION_NAME): Likewise.

        * i386/sysv4.h (ASM_OUTPUT_ASCII): Likewise.

        * i860/paragon.h (ASM_OUTPUT_ASCII): Likewise.

        * i860/sysv3.h (ASM_OUTPUT_ASCII): Likewise.

        * m32r/m32r.c (m32r_encode_section_info): Likewise.

        * mcore-elf.h (ASM_FINISH_DECLARE_OBJECT): Likewise.

        * mcore/mcore.c (mcore_encode_section_info): Likewise.

        * mips/elf.h (ASM_FINISH_DECLARE_OBJECT): Likewise.

        * mips/elf64.h (ASM_FINISH_DECLARE_OBJECT): Likewise.

        * mips/iris6.h (ASM_FINISH_DECLARE_OBJECT): Likewise.

        * mips/mips.h (ASM_OUTPUT_IDENT): Likewise.

        * mips/mips.md (movdi, movsi): Likewise.

        * mips/netbsd.h (ASM_FINISH_DECLARE_OBJECT): Likewise.

        * netbsd.h (ASM_FINISH_DECLARE_OBJECT): Likewise.

        * openbsd.h (ASM_FINISH_DECLARE_OBJECT): Likewise.

        * ptx4.h (ASM_FINISH_DECLARE_OBJECT, ASM_OUTPUT_LIMITED_STRING,
        ASM_OUTPUT_ASCII): Likewise.

        * rs6000/rs6000.c (rs6000_allocate_stack_space, output_epilog,
        output_mi_thunk, output_toc): Likewise.

        * rs6000/rs6000.md (movsi): Likewise.

        * rs6000/sysv4.h (ASM_OUTPUT_INT, ASM_OUTPUT_SECTION_NAME): Likewise.

        * tahoe/harris.h (ASM_OUTPUT_ASCII): Likewise.

        * v850/v850.c (print_operand, print_operand_address,
        v850_encode_data_area): Likewise.

2000-03-07  Clinton Popetz  <cpopetz@cygnus.com>

        * config/mips/mips.md (zero_extendsidi2): Always force operand
        one to memory for mips16.

Mon Mar  6 15:22:29 2000  Richard Kenner  <kenner@vlsi1.ultra.nyu.edu>

        * tree.h (INT_CST_LT, INT_CST_LT_UNSIGNED): Remove unneeded casts.
        (struct tree_int_cst): int_cst_low is now unsigned HOST_WIDE_INT.
        (attribute_hash_list, type_hash_canon): hashcode is now unsigned.
        (type_hash_lookup, type_hash_add, type_hash_list): Likewise.
        (min_precision): Result is unsigned.
        (add_double, neg_double, mul_double): Low word is unsigned.
        (lshift_double, rshift_double, lrotate_double): Likewise.
        (rrotate_double, div_and_round_double): Likewise.
        (tree_floor_log2, compare_tree_int): New functions.
        (preserve_rtl_expr_temps): New declaration.
        * c-common.c (declare_hidden_char_array): Use compare_tree_int.
        (decl_attributes): Use tree_log2 to find alignment.
        Check for TREE_INT_CST_HIGH for format args.
        (min_precision): Now unsigned.
        Use tree_floor_log2.
        (truthvalue_conversion): Delete long-disabled code.
        * c-decl.c (finish_struct): Clean up tests on field width.
        (finish_function): Use compare_tree_int.
        * c-pragma.c (handle_pragma_token): Use tree_log2 for alignment.
        * c-typeck.c (comptypes): Use tree_int_cst_equal.
        (default_conversion, digest_init): Use compare_tree_int.
        (build_binary_op): Use integer_all_onesp and compare_tree_int.
        Fix type errors in forming masks.
        * calls.c (initialize_argument_information): Use compare_tree_int.
        * dbxout.c (dbxout_type): Cast TREE_INT_CST_LOW to HOST_WIDE_INT.
        * except.c (expand_eh_region_start_tree): Use compare_tree_int.
        * expr.c (is_zeros_p, case INTEGER_CST): Use integer_zerop.
        (store_field): Use compare_tree_int.
        (expand_expr, case CONSTRUCTOR): Use TYPE_SIZE_UNIT.
        (expand_expr, case ARRAY_REF): Use compare_tree_int.
        (do_jump, case BIT_AND_EXPR): Use tree_floor_log2.
        (do_store_flag): Use compare_tree_int.
        * fold-const.c (encode, decode): Low part is always unsigned.
        (force_fit_type, add_double, neg_double, mul_double): Likewise.
        (lshift_double, rshift_double, lrotate_double): Likewise.
        (rrotate_double, div_and_round_double, int_const_binop): Likewise.
        (fold_convert): Use compare_tree_int.
        (operand_equal_p, case INTEGER_CST): Use tree_int_cst_equal.
        (invert_truthvalue, case INTEGER_CST): Likewise.
        (fold): Use compare_tree_int; add casts for unsigned TREE_INT_CST_LOW.
        * mkdeps.c (deps_dummy_targets): Make I unsigned.
        * rtl.h (add_double, neg_double, mul_double): Low words are unsigned.
        (lshift_double, rshift_double, lrotate_double, rrotate_double):
        Likewise.
        * stmt.c (expand_decl): Use compare_tree_int and mode_for_size_tree.
        (expand_end_case): Use compare_tree_int.
        (estimate_case_costs): Cast TREE_INT_CST_LOW to HOST_WIDE_INT.
        * stor-layout.c (mode_for_size_tree): Use compare_tree_int.
        (layout_decl): Likewise.
        (layout_record, layout_union): Make sizes unsigned.
        (layout_type, case VOID_TYPE): TYPE_SIZE must be bitsizetype.
        (layout_type, case QUAL_UNION_TYPE): Use compare_tree_int.
        * tree.c (struct type_hash): hashcode is unsigned.
        (build_type_attribute_variant, type_hash_list): Likewise.
        (type_hash_lookup, type_hash_add, type_hash_canon): Likewise.
        (attribute_hash_list, build_array_type, build_method_type): Likewise.
        (build_complex_type): Likewise.
        (real_value_from_int_cst): Remove unneeded casts.
        (integer_all_onesp): Add casts.
        (tree_floor_log2, compare_tree_int): New functions.
        (build_index_type): Use tree_int_cst_sgn.
        * varasm.c (assemble_variable): Use compare_tree_int.

2000-03-06  Jason Merrill  <jason@casey.cygnus.com>

        * cpphash.c (collect_expansion): Also catch ## at start of macro.

        * varasm.c (make_decl_rtl): Don't add a number to members of
        local classes.
        (make_function_rtl): Likewise.

2000-03-06  Alexandre Oliva  <oliva@lsd.ic.unicamp.br>

        * gcse.c (compute_can_copy): Adjust if/else blocks from rth's
        patch from 2000-01-28.

2000-03-06  Clinton Popetz  <cpopetz@cygnus.com>

        * config/sh/sh.c: (barrier_align): Handle a delay slot that is
        filled with an insn from the jump target.

2000-03-07  Michael Hayes  <m.hayes@elec.canterbury.ac.nz>

        * config/c4x/c4x-protos.h (c4x_global_name): Constify char *.
        (c4x_external_ref): Likewise.
        * config/c4x/c4x.c (struct name_list): Likewise.

1999-12-16  Ben Collins  <bcollins@debian.org>

        * Makefile.in: Pass a new MULTILIB_EXCLUSIONS option as the sixth
        argument to genmultilib.
        * genmultilib: accept new MULTILIB_EXCLUSIONS option and output
        the contents into the multilib.h header.
        * gcc.c: Declare multilib_exclusions for the specs file.
        (set_multilib_dir): Use it.
        (print_multilib_info): Likewise.
        * t-linux64: Declare arguments for new MULTILIB_EXCLUSIONS option
        to pass to genmultilib.

2000-03-06  Kaveh R. Ghazi  <ghazi@caip.rutgers.edu>

        * builtins.c (built_in_class_names, built_in_names): Constify a
        char*.

        * gmon-sol2.c (monstartup, moncontrol): Cast ptrs to long, not
        int.
        (_mcleanup): Ensure value matches format specifier in sprintf.

        * cpphash.c (special_symbol): Don't needlessly cast away
        const-ness.

        * cppinit.c (base_name): Delete unused prototype.

        * mkdeps.c (deps_init): Make definition K&R safe.

        * tree.h (built_in_class_names, built_in_names): Constify a
        char*.

2000-03-06  Jakub Jelinek  <jakub@redhat.com>

        * config/sparc/sparc.c (eligible_for_epilogue_delay): Accept
        floating point instructions for epilogue delay.

        * config/sparc/sparc.h (ASM_ARCH64_SPEC): Pass -no-undeclared-regs
        to gas if it supports .register pseudo.

        * real.h (MAX_LONG_DOUBLE_TYPE_SIZE): Define to
        LONG_DOUBLE_TYPE_SIZE if not defined.
        Use MAX_LONG_DOUBLE_TYPE_SIZE instead of
        LONG_DOUBLE_TYPE_SIZE in preprocessor if clauses.
        * real.c: Likewise.
        * gengenrtl.c: Likewise.
        * print-rtl.c: Likewise.
        * rtl.c: Likewise.
        * config/sparc/sol2-sld-64.h (TARGET_DEFAULT): Set
        MASK_LONG_DOUBLE_128.
        * config/sparc/sol2.h (TARGET_DEFAULT): Likewise.
        * config/sparc/sp64-elf.h (TARGET_DEFAULT): Likewise.
        * config/sparc/linux64 (TARGET_DEFAULT): Likewise.
        (SUBTARGET_SWITCHES): Define.
        (CPP_ARCH32_SPEC): Define __LONG_DOUBLE_128__ if compiling
        with -mlong-double-128.
        (LONG_DOUBLE_TYPE_SIZE): Define depending on target_flags.
        (MAX_LONG_DOUBLE_TYPE_SIZE): Define.
        (LIBGCC2_LONG_DOUBLE_TYPE_SIZE): Define depending on CPP macros.
        (CC1_SPEC): Include -mlong-double-{64,128} as needed.
        * config/sparc/linux.h (SUBTARGET_SWITCHES): Define.
        (CPP_SUBTARGET_SPEC): Define __LONG_DOUBLE_128__ if compiling
        with -mlong-double-128.
        (LONG_DOUBLE_TYPE_SIZE): Define depending on target_flags.
        (MAX_LONG_DOUBLE_TYPE_SIZE): Define.
        (LIBGCC2_LONG_DOUBLE_TYPE_SIZE): Define depending on CPP macros.
        * config/sparc/sparc.h (MASK_LONG_DOUBLE_128,
        TARGET_LONG_DOUBLE_128): Define.
        * config/sparc/linux-aout.h (LONG_DOUBLE_TYPE_SIZE): Remove.
        * config/sparc/sparc.c (sparc_override_options): Disallow 64bit
        long double on TARGET_ARCH64.

2000-03-06  Mark Mitchell  <mark@codesourcery.com>

        * function.c (free_temps_for_rtl_expr): Don't free slots
        that have been pushed into a higher level.

        Revert this patch:
        2000-03-05  Mark Mitchell  <mark@codesourcery.com>

2000-03-05  Mark Mitchell  <mark@codesourcery.com>

        * basic-block.h (ALLOCA_REG_SET): Remove.
        (INITIALIZE_REG_SET): New macro.
        * flow.c (update_life_info): Use it.
        (calculate_global_regs_live): Likewise.
        (propagate_block): Likewise.
        * global.c (build_insn_chain): Likewise.
        * haifa-sched.c (schedule_region): Likewise.

2000-03-05  Stephane Carrez  <stcarrez@worldnet.fr>

        * dwarf2out.c (UNALIGNED_WORD_ASM_OP): Support 2 bytes pointer.
        (ASM_OUTPUT_DWARF_ADDR_CONST): Use UNALIGNED_WORD_ASM_OP.
        (DWARF_ARANGES_PAD_SIZE): New define.
        (output_aranges): Use it to pad the address range header.
        (DWARF_ROUND): Fix for non power of 2 rounding.

2000-03-05  Jason Merrill  <jason@casey.cygnus.com>

        * mkdeps.c (deps_calc_target): Remove incorrect 'const'.

2000-03-05  Mark Mitchell  <mark@codesourcery.com>

        * tree.def (RTL_EXPR): Update documentation.
        * tree.h (RTL_EXPR_HAS_NO_SCOPE): New macro.
        * expr.c (expand_expr): Handle RTL_EXPR_HAS_NO_SCOPE.
        * function.c (preserve_rtl_expr_temp): New function.
        (preserve_rtl_expr_temps): Likewise.
        (preserve_rtl_expr_result): Use it.

        Revert this patch:
        2000-03-04  Mark Mitchell  <mark@codesourcery.com>

2000-03-04  Thomas Schuster <Thomas.Schuster@gmx.net>

        * regmove.c (copy_src_to_dest)  Do not create src->dest move
        for unchanging destination.

2000-03-04  Mark Mitchell  <mark@codesourcery.com>

        * function.h (struct sequence_stack): Remove rtl_expr.
        (struct emit_staus): Likewise.
        (seq_rtl_expr): Remove.
        * tree.h (free_temps_for_rtl_expr): Don't declare.
        (start_sequence_for_rtl_expr): Likewise.
        * rtl.h (preserve_rtl_expr_result): Likewise.
        * emit-rtl.c (start_sequence): Don't set sequence_rtl_expr.
        (start_sequence_for_rtl_expr): Remove.
        (push_topmost_sequence): Don't save sequence_rtl_expr.
        (pop_topmost_sequence): Remove comment about not restoring it.
        (end_sequence): Don't set seq_rtl_expr.
        (init_emit): Don't initialize it.
        (mark_sequence_stack): Don't mark it.
        (mark_emit_status): Likewise.
        * except.c (protect_with_terminate): Use
        start_sequence_for_rtl_expr, not start_sequence.
        * expr.c (expand_expr, case RTL_EXPR): Don't call
        preserve_rtl_expr_result or free_temps_for_rtl_expr.
        * function.c (assign_stack_temp_for_type): Don't set rtl_expr.
        (preserve_rtl_expr_result): Remove.
        (free_temps_for_rtl_expr): Likewise.
        (pop_temp_slots): Likewise.
        (mark_temp_slot): Don't mark the rtl_expr.
        * stmt.c (expand_start_stmt_expr): Use start_sequence, not
        start_sequence_for_rtl_expr.

2000-03-04  Zack Weinberg  <zack@wolery.cumb.org>

        * mkdeps.c, mkdeps.h: New files.
        * po/POTFILES.in: Add them.
        * Makefile.in (LIBCPP_OBJS): Add mkdeps.o.
        (cpplib.o, cppinit.o): Depend on mkdeps.h.
        (mkdeps.o): New target.

        * cppfiles.c: Delete deps_output.
        * cppinit.c: Include mkdeps.h.  Delete known_suffixes,
        OBJECT_SUFFIX, and base_name.
        (cpp_cleanup): Use deps_free.  Free ihash->name when clearing
        the include hash.
        (initialize_dependency_output): Use deps_init,
        deps_add_target, deps_calc_target, and deps_add_dep.  Remove
        all the unnecessary string bashing.
        (cpp_finish): Use deps_write.  Remove an unnecessary nesting
        level.
        * cpplib.c (do_include): Use deps_add_dep.
        * cpplib.h (struct cpp_reader): Replace deps_buffer,
        deps_allocated_size, deps_size, deps_column members with
        single pointer to a struct deps.  Delete prototype of
        deps_output.

        * cppinit.c: Fix thinko in previous patch.

Sat Mar  4 11:32:30 2000  Richard Kenner  <kenner@vlsi1.ultra.nyu.edu>

        * machmode.h (mode_for_size, smallest_mode_for_size): SIZE now signed.
        * stor-layout.c (mode_for_size, smallest_mode_for_size): Likewise.
        (mode_for_size_tree): New function.
        (layout_decl, layout_type): Call it and clean up BLKmode checks.
        * tree.h (mode_for_size_tree): New declaration.

        * toplev.c (debug_ignore_block): Mark arg BLOCK as possibly unused.

2000-03-04  Jason Merrill  <jason@casey.cygnus.com>

        * stmt.c (is_body_block): Move...
        * dwarfout.c, dwarf2out.c: ...from here.
        * tree.h: Declare it.
        * emit-rtl.c (remove_unncessary_notes): Don't remove the body block.
        * final.c (final_start_function): Do call remove_unnecessary_notes
        when scheduling.

2000-03-03  Zack Weinberg  <zack@wolery.cumb.org>

        * config/vax/xm-vms.h: Define OBJECT_SUFFIX and EXECUTABLE_SUFFIX.

        * cpplib.h (_dollar_ok): New macro.
        (is_idchar, is_idstart): Use it.
        (IStable): Rename to _cpp_IStable.  Declare it const if
        gcc >=2.7 or C99.  Delete all references to FAKE_CONST.
        (is_idchar, is_idstart, is_numchar, is_numstart, is_hspace,
        is_space): Update for renamed IStable.

        * cppinit.c: Delete all references to FAKE_CONST and CAT
        macros. Define init_IStable as empty macro if gcc >=2.7 or
        C99. Change TABLE() to ISTABLE and hardcode name of table.
        (cpp_start_read): Don't change the IStable based on
        dollars_in_ident.

        * cpphash.c (unsafe_chars): Add pfile argument.  All callers
        changed.  Handle '$' for char1 correctly.
        * cpplib.c (cpp_get_token): Use is_numchar when parsing numbers.

        * cppexp.c (tokentab2): Make const.
        (cpp_lex): Make toktab const.
        * cppinit.c (include_defaults_array): Make const.
        (initialize_standard_includes): Make default_include const.

2000-03-03  Jason Merrill  <jason@casey.cygnus.com>

        * dwarf2out.c (dwarf2out_frame_debug): Add cast to silence warning.
        (dwarf2out_decl): Functions can now have DECL_IGNORED_P.
        (gen_decl_die): Likewise.
        * dwarfout.c (dwarfout_file_scope_decl): Likewise.
        (output_decl): Likewise.

        * varasm.c (make_function_rtl): If we change the name used in the
        rtl, update DECL_ASSEMBLER_NAME accordingly.
        (make_decl_rtl): Likewise.

        * toplev.c (rest_of_compilation): Tweak formatting.

        * toplev.c (rest_of_compilation): find_loop_tree_blocks before
        remove_unnecessary_notes.
        (debug_ignore_block): New fn.
        * toplev.h: Declare it.
        * emit-rtl.c (remove_unncessary_notes): Call it.
        * dwarf2out.c (dwarf2out_ignore_block): New fn.
        * dwarf2out.h: Declare it.
        * final.c (final_start_function): Don't call remove_unnecessary_notes
        if we did insn scheduling.

2000-03-03  Zack Weinberg  <zack@wolery.cumb.org>

        * cppinit.c (cpp_handle_option): Set opts->pedantic directly.
        * cpplib.h: Delete SET_CPP_PEDANTIC.

Fri Mar  3 14:56:12 2000  Richard Kenner  <kenner@vlsi1.ultra.nyu.edu>

        * expr.c (expand_expr, case COMPONENT_REF): Use bitfield case if
        result is a RECORD_TYPE.

2000-03-03  Jonathan Larmour  <jlarmour@cygnus.co.uk>

        * mips/elf.h (CTOR_LISTS_DEFINED_EXTERNALLY): Added.

2000-03-03  Richard Henderson  <rth@cygnus.com>

        * alpha.c (alpha_emit_set_const_1): Re-order cases to prefer
        addition over compliments over shifts.

Fri Mar  3 12:49:28 2000  J"orn Rennecke <amylaar@cygnus.co.uk>

        * reload1.c (reload_combine_note_use): Handle return register USEs.
        REG case: Handle multi-hard-register hard regs.

Fri Mar  3 07:38:34 2000  Richard Kenner  <kenner@vlsi1.ultra.nyu.edu>

        * md.texi: Document use of '*' in insn pattern name.

2000-03-03  Jason Merrill  <jason@casey.cygnus.com>

        * calls.c (special_function_p): operator new may not be malloc-like.

        * gcse.c (dump_hash_table): Really fix error in last change.

2000-03-02  Denis Chertykov  <denisc@overta.ru>

        * avr.c (print_operand): Use print_operand_address instead of
        output_addr_const.
        * avr/libgcc.S: Cleanup code.

2000-03-02  Richard Henderson  <rth@cygnus.com>

        * alpha.c (alpha_emit_set_const_1): Also try c + small constant.

2000-03-02  Mark Mitchell  <mark@codesourcery.com>

        * tree.h (TYPE_ALIGN_UNIT): New macro.

2000-03-02  Clinton Popetz  <cpopetz@cygnus.com>

        * i386.c: (constant_call_address_operand): Reject CONST_INT.

2000-03-02  Jason Merrill  <jason@casey.cygnus.com>

        * cpplib.h (CPP_PEDANTIC): Only true if system_header_p is not set
        for the buffer.
        (SET_CPP_PEDANTIC): New macro.
        * cpplib.c (do_include): Don't bother checking system_header_p.
        (do_warning, do_ident, do_assert, do_unassert): Likewise.
        * cppinit.c (cpp_handle_option): Use SET_CPP_PEDANTIC.

        * function.h (struct expr_status): Add x_arg_space_so_far.
        (arg_space_so_far): New macro.
        * expr.c (init_expr): Initialize it.
        * calls.c (emit_call_1): Reset it.
        (compute_argument_block_size, expand_call): Use it.
        (expand_call, store_one_arg): Increment it.

Thu Mar  2 17:27:13 2000  Richard Kenner  <kenner@vlsi1.ultra.nyu.edu>

        * varasm.c (output_constant): Strip off a CONVERT_EXPR to
        a UNION_TYPE.

2000-03-02  Zack Weinberg  <zack@wolery.cumb.org>

        * cppfiles.c (cpp_read_file): New function.

        * cpphash.c (collect_expansion): Make sure to reset last_token
        to NORM when we hit a string.  Handle trailing whitespace
        properly when the expansion is empty.
        (create_definition): Disable line commands while parsing the
        directive line.
        (dump_definition): If pfile->lineno == 0, output a line
        command ahead of the dump, and add a trailing newline.

        * cppinit.c (append_include_chain): Add fifth argument, which
        indicates whether or not system headers are C++ aware.
        (initialize_standard_includes): New function,
        broken out of read_and_prescan.  Pass 'cxx_aware' value from
        the include_defaults_array on to append_include_chain.
        (dump_special_to_buffer): Const-ify char array.
        (builtin_array): Don't dump __BASE_FILE__.
        (cpp_start_read): Use cpp_read_file.  Reorder code for
        clarity.  Don't output line commands here for -D/-A/-U
        switches.  Don't call deps_output for files included with
        -include or -imacros.

        * cpplib.c (do_define): Don't pay any attention to the second
        argument.
        (cpp_expand_to_buffer): Disable line commands while scanning.
        (output_line_command): Work in the file buffer.
        * cpplib.h: Remove no_record_file flag from struct cpp_reader.
        Fix formatting of comments.  Prototype cpp_read_file.

Thu Mar  2 13:29:46 2000  Richard Kenner  <kenner@vlsi1.ultra.nyu.edu>

        * c-common.c (c_common_nodes_and_builtins): Make sizetype_endlink
        reference the language-equivalent of sizetype.
        * c-typeck.c (comptypes): Treat sizetype like its language equivalent.
        * fold-const.c (size_binop, size_diffop): Put back checks.
        * gcse.c (dump_hash_table): Fix minor error in last change.
        * stor-layout.c (set_sizetype): Set TYPE_DOMAIN of sizetype.
        Clear TYPE_{NEXT,MAIN}_VARIANT and TYPE_{POINTER,REFERENCE}_to of
        all sizetypes.

Thu Mar  2 12:48:45 MET 2000  Jan Hubicka  <jh@suse.cz>

        * calls.c (expand_call)  Do not attempt to combine stack adjustments
        with inhibit_defer_pop set.

2000-03-01  Mark Mitchell  <mark@codesourcery.com>

        * stor-layout.c (layout_decl): Allow front-ends to explicitly set
        the DECL_SIZE for a FIELD_DECL.

2000-03-01  Bruce Korb  <bkorb@gnu.org>

        * fixinc/inclhack.tpl: remove unused symlinks
        * fixinc/README: GCC Maintainer info
        * fixinc/inclhack.sh: regen
        * fixinc/fixincl.sh: regen

2000-03-01  Zack Weinberg  <zack@wolery.cumb.org>

        * cpphash.c (collect_expansion): Trim trailing white space
        from macro definitions, but don't go past the last insertion
        point.

Wed Mar  1 12:14:31 MET 2000  Jan Hubicka  <jh@suse.cz>

        * i386.md (mulqi3): New pattern.

2000-02-29  Zack Weinberg  <zack@wolery.cumb.org>

        * cpplib.h (CPP_ASSERTION, CPP_STRINGIZE, CPP_TOKPASTE): New
        token types.
        (struct cpp_reader): Add parsing_if_directive and
        parsing_define_directive flags.
        (struct cpp_options): Remove output_conditionals flag.
        (check_macro_name): Delete prototype.

        * cpphash.h (struct macrodef): Delete.
        (struct reflist): Separate from struct definition.
        (struct definition): Remove unused fields.  Add column number.
        (create_definition): Returns a DEFINITION *.  Takes a
        cpp_reader * and an int.

        * cpphash.c (SKIP_WHITE_SPACE): Delete.
        (PEEKC): Copy defn from cpplib.c.
        (rest_extension, REST_EXTENSION_LENGTH): Delete.
        (struct arg): New.
        (struct arglist): Simplify.
        (collect_expansion): Rewrite.  Get tokens by calling
        cpp_get_token.  Add more error checking.
        (collect_formal_parameters): New function, broken out of
        create_definition and reworked to use get_directive_token.
        (create_definition): All real work is now in collect_expansion
        and collect_formal_parameters.  do_define handles finding the
        macro name.  Return a DEFINITION, not a MACRODEF.
        (macroexpand): Replace bcopy with memcpy throughout.  Replace
        character-at-a-time copy loop with memcpy and pointer increments.
        (compare-defs): d1->argnames / d2->argnames might be null.

        * cpplib.c (copy_rest_of_line): Delete function.
        (skip_rest_of_line): Do all the work ourselves.
        (skip_string): New function.
        (parse_string): Use skip_string.
        (get_macro_name): New function.
        (check_macro_name): Delete.
        (copy_comment): Use CPP_RESERVE and CPP_PUTC_Q.
        (cpp_skip_hspace): Use CPP_BUMP_LINE.
        (handle_directive): ICE if we're called on a macro buffer.
        (do_define): Determine macro name and type (funlike/objlike)
        here.  Expunge all uses of MACRODEF.
        (cpp_push_buffer): Set line_base to NULL.
        (do_undef, read_line_number): Don't worry about getting a POP token.
        (eval_if_expression): Set/reset parsing_if_directive around
        cpp_parse_expr. Don't clear only_seen_white.
        (skip_if_group): Remove output_conditionals logic.  Use
        skip_rest_of_line.
        (cpp_get_token): Return ASSERTION, STRINGIZE, and TOKPASTE
        tokens under appropriate conditions.
        (cpp_unassert): Call do_unassert not do_assert.  Oops.

        * cppexp.c (parse_defined): New function, break out of
        cpp_lex.
        (cpp_lex): We now get CPP_ASSERTION tokens and can check them
        ourselves, with cpp_defined.
        * cppinit.c (cpp_handle_option, print_help): Delete -ifoutput.

        * gcc.dg/20000209-2.c: Turn off -pedantic-errors.
        * gcc.dg/strpaste-2.c: New.

2000-02-29  Mark Mitchell  <mark@codesourcery.com>

        * fold-const.c (size_binop): Don't asert inputs are the same and
        have TYPE_IS_SIZETYPE set.
        (size_diffop): Likewise.

2000-02-29  Jason Merrill  <jason@casey.cygnus.com>

        * dwarfout.c (output_block): Output abstract blocks even if they
        don't have TREE_ASM_WRITTEN set.

        * calls.c (emit_library_call): Check for null REG.

2000-03-01  Martin von Loewis  <loewis@informatik.hu-berlin.de>

        * c-decl.c (current_function_decl): Move to toplev.c.
        (init_decl_processing): Don't add current_function_decl as a ggc
        root here.
        * dbxout.c (dbxout_symbol): Change return type to int.
        (dbxout_symbol_location, dbxout_syms): Likewise.
        (dbxout_block): Don't emit LBRAC/RBRAC pairs for blocks without
        any locals. Use current_function_func_begin_label if set.
        * dbxout.h (dbxout_symbol, dbxout_syms): Change return type.
        * dwarf2out.c (dwarf2out_begin_prologue): Set
        current_function_func_begin_label.
        * final.c (final_start_function): Reset it.
        * toplev.c (current_function_decl): Define it here.
        (current_function_func_begin_label): New variable.
        (main): Add both as ggc roots.
        * tree.h (current_function_func_begin_label): Declare.

Tue Feb 29 14:07:04 2000  Richard Kenner  <kenner@vlsi1.ultra.nyu.edu>

        * gcse.c: Cleanups throughout: mostly white-space, but also
        some minor rearrangement of code.

Tue Feb 29 10:45:59 2000  Jeffrey A Law  (law@cygnus.com)

        * calls.c (emit_library_call): Do not abort if FUNCTION_ARG
        returns a PARALLEL.  Use emit_group_load and use_group_regs
        as needed.
        (emit_library_call_value): Similarly.

        * pa/t-pa: Use quadlib.c instead of quadlib.asm.
        * pa/quadlib.asm: Remove.
        * pa/quadlib.c: New file.

        * configure.in (hpux10, hpux11, PA32 mode): Use i128 float format.
        * configure: Rebuilt.

2000-02-29  Philip Blundell  <pb@futuretv.com>

        * config/arm/conix-elf.h: New file.
        * configure.in (arm*-*-conix*): New configuration.
        * configure: Regenerate.

2000-02-28  Jason Merrill  <jason@casey.cygnus.com>

        * dwarf2out.c (gen_block_die): Output abstract blocks even if they
        don't have TREE_ASM_WRITTEN set.

Mon Feb 28 21:07:59 2000  Richard Kenner  <kenner@vlsi1.ultra.nyu.edu>

        * Eliminate DECL_FIELD_SIZE.
        * builtins.c (built_in_class_names, built_in_names): New variables.
        * c-decl.c (finish_struct): Set specified size in DECL_SIZE.
        * expr.c (expand_expr, case COMPONENT_REF): Get field size from
        DECL_SIZE, not DECL_FIELD_SIZE.
        * print-tree.c (print_node): Remove code that prints extra blank
        lines in some cases.
        Properly handle inline and builtin function cases.
        * stor-layout.c (layout_decl): Get specified size from DEC_SIZE.
        * tree.h (built_in_class_named, built_in_names): New declarations.
        (union tree_decl): Rename internal unions to u1 and u2 and change
        some of their components.
        Add new field built_in_class.
        (DECL_ALIGN, DECL_INCOMING_RTL, DECL_SAVED_INSNS, DECL_FRAME_SIZE):
        Reflect above changes.
        (DECL_FUNCTION_CODE, DECL_BUILT_IN_CLASS): Likewise.
        (DECL_SET_FUNCTION_CODE, DECL_FIELD_SIZE): Deleted.
        * objc/objc-act.c (objc_copy_list): Use DECL_SIZE, not DECL_FIELD_SIZE.
        (encode_field_decl): Likewise; also remove obsolete test for bitfield.

2000-02-28  Dmitri Makarov  <dim@windriver.com>

        * extend.texi: Document ARM's support for long/short calls.

        * invoke.texi: Document ARM's -mlong-calls command line switch.

        * config/arm/arm-protos.h (arm_is_longcall_p): Add prototype.
        (arm_encode_call_attribute): Add prototype.
        (arm_set_default_type_attribute): Add prototype.
        (arm_strip_name_encoding): Add prototype.

        * config/arm/arm.c (arm_init_cumulative_args): replace
        initialisation og 'long_calls' field with initialisation of
        'call_cookie' field.
        (enum arm_pragma_enum): New enum.
        (arm_pragma_long_calls): New static variable.
        (arm_process_pragma): Also process "#pragma long_calls_off".
        (arm_valid_type_attribute_p): Accept short_call attribute.
        (arm_comp_type_attributes): Check long/short call attributes.
        (arm_encode_call_attribute):  New function:  Encode long_call
        or short_call attribute in function name.
        (arm_set_default_type_attributes): New function: Assign
        default attributes to newly defined type.
        (current_file_function_operand): New function: Return true if
        the symbol is a function which has already been compiled.
        (arm_is_longcall_p): New function: Return true if the
        indicated function should be called via a long call.
        (arm_get_strip_length): New function.  Returns number of
        prefix characters to be stripped from a function's name.
        (arm_strip_name_encoding): New function.  Strip prefix characters
        from a function's name.

        * config/arm/arm.h (CUMULATIVE_ARGS): Replace 'long_call' field
        with 'call_cookie'.
        (SHORT_CALL_FAG_CHAR): Define.
        (LONG_CALL_FAG_CHAR): Define.
        (ENCODED_SHORT_CALL_ATTR_P): Define.
        (ENCODED_LONG_CALL_ATTR_P): Define.
        (ARM_NAME_ENCODING_LENGTHS): Define.
        (STRIP_NAME_ENCODING): Define.
        (ASM_OUTPUT_LABELREF): Define, and use to strip name encoding.
        (ARM_ENCODE_CALL_TYPE): Define.
        (ENCODE_SECTION): Invoke ARM_ENCODE_CALL_TYPE.
        (ARM_DECLARE_FUNCTION_SIZE): Define.
        (SET_DEFAULT_TYPE_ATTRIBUTES): Define.

        * config/arm/arm.md (call): Call arm_is_longcall_p to decide
        if a long call is needed.
        (call_value): Ditto.
        (call_symbol): Ditto.

        * config/arm/elf.h (ASM_DECLARE_FUNCTION_SIZE): Add invocation of
        ARM_DECLARE_FUNCTION_SIZE.

        * config/arm/pe.h (ARM_PE_FLAG_CHAR): Define.
        (SUBTARGET_NAME_ENCODING_LENGTHS): Define.
        (ARM_STRIP_NAME_ENCODING): Undefine.
        (STRIP_NAME_ENCODING): Undefine.
        (ASM_OUTPUT_LABELREF): Use arm_strip_name_encoding.
        (ASM_DECLARE_FUNCTION_NAME): Ditto.
        (ASM_OUTPUT_COMMON): Ditto.
        (ASM_DECLARE_OBJECT_NAME): Ditto.

        * config/arm/pe.c (arm_dllexport_name_p): Check for
        ARM_PE_FLAG_CHAR.
        (arm_dllimport_name_p): Ditto.
        (arm_mark_dllexport): Use ARM_PE_FLAG_CHAR.
        (arm_mark_dllimport): Ditto.

Mon Feb 28 22:11:12 2000  J"orn Rennecke <amylaar@cygnus.co.uk>

        * sh.h (DWARF_LINE_MIN_INSTR_LENGTH): Define.

2000-02-28  Mark Mitchell  <mark@codesourcery.com>

        * xcoffout.c (xcoffout_begin_function): Fix typo in previous change.

2000-02-28  Zack Weinberg  <zack@wolery.cumb.org>

        * tm.texi: Document new target switch, NO_BUILTIN_WCHAR_TYPE.
        * cppinit.c (builtin_array): Define __WCHAR_TYPE__ only if
        NO_BUILTIN_WCHAR_TYPE is not defined.
        (CPP_WCHAR_TYPE): Delete.
        * cccp.c (main): Don't change wchar_type if cplusplus.
        (special_symbol, initialize_builtins): Honor NO_BUILTIN_WCHAR_TYPE.

2000-02-28  Nick Clifton  <nickc@cygnus.com>

        * config/arm/arm-wince-pe.h (SIZE_TYPE): Define to "unsigned long".

Mon Feb 28 14:21:15 2000  Catherine Moore  <clm@cygnus.com>

        * config/pa/som.h (MAKE_DECL_ONE_ONLY): Define.
        (ASM_WEAKEN_LABEL): Define.

Mon Feb 28 13:07:19 MET 2000  Jan Hubicka  <jh@suse.cz>

        * expr.c (store_constructor): Do not emit USE.
        * rtl.h (stupid_life_analysis): Remove.

Mon Feb 28 07:03:27 2000  Richard Kenner  <kenner@vlsi1.ultra.nyu.edu>

        * function.c (number_blocks): Reset next_block_index based on
        what debugging format is used, not what is defined.

        * lcm.c: Minor reformatting throughout.
        (reg_dies, reg_becomes_live): Properly handle multiple hard regs.

        * toplev.c (rest_of_compilation): Account for time in
        optimize_mode_switching.

        * jump.c (jump_optimize_1): Don't call delete_barrier_successors
        if only marking labels.

Mon Feb 28 12:53:57 MET 2000  Jan Hubicka  <jh@suse.cz>

        * calls.c (expand_call): Attempt to combine stack adjustments with
        pending stack adjustments.

Mon Feb 28 11:34:43 2000  J"orn Rennecke <amylaar@cygnus.co.uk>

        * loop.c (reg_in_basic_block_p): Don't abort when falling through
        to the end of the function.

2000-02-27  Mark Mitchell  <mark@codesourcery.com>

        * emit-rtl.c (remove_unncessary_notes): Remove notes for empty
        blocks.
        * final.c (next_block_index): Remove.
        (max_block_depth): Likewise.
        (pending_blocks): Likewise.
        (init_final): Don't initialize them.
        (final_start_function): Don't set next_block_index.  Set up
        BLOCK_NUMBER.
        (final_scan_insn): Use BLOCK_NUMBER, not next_block_index.
        * function.h (number_blocks): New function.
        * function.c (get_block_vector): New function.
        (identify_blocks): Use it.
        (reorder_blocks): Set NOTE_BLOCK.
        (number_blocks): New function.
        * tree.def (BLOCK): Add documentation for TREE_ASM_WRITTEN flag.
        * tree.h (BLOCK_NUMBER): New macro.
        (tree_block): Add block_num field.
        * dbxout.c (next_block_number): Remove.
        (dbxout_init): Don't set it.
        (dbxout_block): Only output blocks that have TREE_ASM_WRITTEN
        set.  Use BLOCK_NUMBER, rather than next_block_num, to determine
        block numbers.
        * toplev.c (rest_of_compilation): Always call
        find_loop_tree_blocks.  Fix indentation.
        * dwarf2out.c (next_block_number): Remove.
        (gen_lexical_block_die): Use BLOCK_NUMBER, not next_block_number,
        to determine block numbers.
        (gen_inlined_subroutine_die): Likewise.
        (gen_block_die): Only output blocks that have TREE_ASM_WRITTEN set.
        (decls_for_scope): Don't increment next_block_number.
        * dwarfout.c (next_block_number): Remove.
        (output_lexical_block_die): Use BLOCK_NUMBER, not next_block_number,
        to determine block numbers.
        (output_inlined_subroutine_die): Likewise.
        (output_block): Only output blocks that have TREE_ASM_WRITTEN set.
        (output_decls_for_scope): Don't increment next_block_number.
        * sdbout.c (next_block_number): Remove.
        (sdbout_block): Use BLOCK_NUMBER.
        (sdbout_begin_block): Simplify.
        * xcoffout.c (next_block_number): Remove.
        (xcoffout_block): Use BLOCK_NUMBER, not next_block_number.
        (xcoffout_begin_block): Don't set next_block_number.
        (xcoffout_begin_function): Likewise. Use BLOCK_NUMBER, not
        next_block_number.

Sun Feb 27 16:40:33 2000  Richard Kenner  <kenner@vlsi1.ultra.nyu.edu>

        * builtins.c (c_strlen): Use size_diffop and return ssizetype value.
        (expand_builtin_strcpy): Pass correct type to size_binop.
        (expand_builtin_strcmp): Likewise.
        Clean up conditional structure.
        * c-decl.c (init_decl_processing): Don't call set_sizetype twice.
        (complete_array_type): Don't use size_binop for MAXINDEX.
        * c-typeck.c (c_sizeof): Use size_one_node and TYPE_SIZE_UNIT.
        (c_sizeof_nowarn, c_size_in_bytes): Likewise.
        (c_alignof): Use size_one_node.
        (build_unary_op): Pass arg of proper type to size_binop.
        (really_start_incremental_init, push_init_level): Use sizetype for
        constructor{,_bit,_unfilled}_index.
        (pop_init_label, output_init_element): Likewise.
        (output_pending_init_elements, process_init_element): Likewise.
        * calls.c (compute_argument_block_size): Field VAR is ssizetype.
        * expr.c (store_expr): Use size_int.
        (store_constructor): Use proper types for size_binop args.
        (get_inner_reference, expand_expr, case ARRAY_REF): Likewise.
        (expand_expr_unaligned): Likewise.
        (string_contant): Return object of sizetype.
        * expr.h (SUB_PARM_SIZE): Call size_diffop and pass proper types.
        (ARGS_SIZE_RTX): Call ARGS_SIZE_TREE.
        (ARGS_SIZE_TREE): Pass proper types to size_binop.
        * fold-const.c (int_const_binop): Refine when size_int is called.
        (fold_convert): Likewise.
        (size_int_wide): Rework to take KIND as arg, only take low order
        bits, handle new sizetype_tab datatype, and chain entries in
        size_table.
        (size_int_type_wide): New function.
        (size_binop): Validate types of arguments.
        (ssize_binop): Deleted.
        (size_diffop): New function.
        (extract_muldiv): Only fold division into multiplication for sizetypes.
        * function.c (assign_parms): Use size_diffop and make sure
        VAR field is of ssizetype; also pass proper type to size_binop.
        (locate_and_pad_parm, pad_to_arg_alignment): Likewise.
        (round_down): Deleted from here.
        * store-layout.c (sizetype_tab): Now an array.
        (sizetype_set, early_root_list): New variables.
        (variable_size): Use size_one_node.
        (round_up): Pass proper type to size_binop.
        (round_down): Moved to here and corrected as above.
        (layout_record): Pass proper arg types to size_binop.
        (layout_type): Likewise.
        If sizetype_set is zero, record the type just laid out.
        (make_unsigned_type): Don't call set_sizetype;
        (make_signed_type): Likewise; also, call fixup_signed_type.
        (initialize_sizetypes): New function.
        (set_sizetype): Make copy of types, set TYPE_IS_SIZETYPE, and
        set name of bitsizetype to "bit_size_type".
        Fix up type of sizes of all types made before call.
        * tm.texi (ROUND_TYPE_SIZE_UNIT): New macro.
        * tree.c (fix_sizetype): Deleted.
        (build_common_tree_nodes): Call initialize_sizetypes.
        (build_common_tree_nodes_2): Don't call fix_sizetype.
        * tree.h (TYPE_IS_SIZETYPE): New macro.
        (initialize_sizetype): New declaration.
        (enum size_type_kind): New type.
        (struct sizetype_tab): Deleted.
        (sizetype_tab): Now array; adjust sizetype macros.
        (size_diffop, size_int_type_wide): New functions.
        (size_int_wide): Change number of args and type; access macros changed.
        (ssize_int, sbitsize_int): New macros.
        * config/i960/i960.h (ROUND_TYPE_SIZE): Use size_int.
        (ROUND_TYPE_SIZE_UNIT): New macro.

2000-02-27  Zack Weinberg  <zack@wolery.cumb.org>

        * c-lex.c (putback_buffer): Make 'buffer' an unsigned char *.

Sun Feb 27 07:44:17 2000  Richard Kenner  <kenner@vlsi1.ultra.nyu.edu>

        * gcov-io.h (__fetch_long, __store_long, __read_long, __write_long):
        Mark as possibly unused.

        * cse.c (cse_insn): Delete dead code involving tablejump.
        Pass CODE_LABEL, not LABEL_REF to gen_jump and reset INSN_CODE.

        * Makefile.in (libcpp.a): Start by deleting it.

2000-02-27  Alexandre Oliva  <oliva@lsd.ic.unicamp.br>

        * cpplib.h (enum file_change_code): Added rename_file.
        * cpplib.c (do_line): If a filename is given, set file_change to
        rename_file.
        (output_line_command): If file_change is rename_file, always
        output a # directive with the file name.

        * cpplib.c (do_pragma): Accept #pragma without consecutive token.

2000-02-26  Mark Mitchell  <mark@codesourcery.com>

        * integrate.c (copy_decl_for_inlining): Preserve TREE_ADDRESSABLE
        when copying a PARM_DECL or RESULT_DECL.

2000-02-26  Kaveh R. Ghazi  <ghazi@caip.rutgers.edu>

        * fix-header.c (recognized_function): Also fix prototypes for
        functions taking "void".

2000-02-26  Geoff Keating  <geoffk@cygnus.com>

        * reload1.c (do_output_reload): Check reg_reloaded_valid before
        looking at reg_reloaded_contents.

2000-02-26  Zack Weinberg  <zack@wolery.cumb.org>

        * Makefile.in (STMP_FIXINC): New toggle.
        (LIBGCC2_DEPS): Delete all references.
        (stmp-headers): Delete target.  All references either deleted
        or changed to stmp-int-headers.
        (all.cross): Don't depend on stmp-headers or STMP_FIXPROTO.
        (LIBCPP_OBJS): Take out cppalloc.o.
        (cppalloc.o): Delete target.
        (stmp-int-hdrs): Depend on $(STMP_FIXINC).
        (gen-protos, fix-header): Link with libiberty.a.
        * build-make: Don't change FIXINCLUDES.  Override STMP_FIXINC
        to empty.

        * configure.in: Remove refs to strerror.
        * acconfig.h: Take out NEED_DECLARATION_STRERROR.
        * system.h: Take out strerror stanza.

        * cpperror.c (my_strerror): Delete function.
        (cpp_error_from_errno, cpp_notice_from_errno): Use xstrerror.
        * cppmain.c (main): Call xmalloc_set_program_name first thing.
        * cppalloc.c: Delete file.
        * gen-protos.c: Don't provide xrealloc.

        * fixinc/fixincl.c, fixinc/fixlib.c, fixinc/procopen.c: Use
        xstrerror throughout.

2000-02-26  Bruce Korb  <bkorb@gnu.org>

        * fixinc/inclhack.def (undefine_null): the bypass pattern needs to
        match for DOS headers, too.
        * fixinc/inclhack.sh,fixincl.x: Regenerate.

2000-02-26  Geoff Keating  <geoffk@cygnus.com>

        * config/elfos.h (ASM_OUTPUT_LABELREF): Don't define.  The default
        is right for most ELF targets.
        * config/ns32k/ns32k.h (ASM_OUTPUT_LABELREF): Don't define.
        Let the default file use %U properly.
        * config/sh/elf.h (ASM_OUTPUT_LABELREF): Don't define.  Use the
        default.

        * config/fp-bit.c (pack_d): Properly handle rounding of denormal
        numbers.

Sat Feb 26 09:39:16 2000  Richard Kenner  <kenner@vlsi1.ultra.nyu.edu>

        * toplev.c (documented_lang_options): Correct spelling error.
        (decode_d_option, decode_f_option, main): Likewise.

        * toplev.c (print_time): Avoid SIGFPE when all_time is zero.

        * config/alpha/alpha.h (ASM_OUTPUT_MI_THUNK): Use .set at
        to tell assembler it is permitted to expand large constants.

2000-02-25  Mumit Khan  <khan@xraylith.wisc.edu>

        * protoize.c: (AUX_INFO_SUFFIX): New macro.
        (aux_info_suffix): Use.
        (SAVE_SUFFIX): New macro.
        (save_suffix): Use.
        (munge_compile_parms): Fix typo in NUL. DJGPP supports /dev/null.
        (gen_aux_info_file): Use aux_info_suffix instead of ".X".
        (edit_file): Handle 8.3 restriction for DOS/DJGPP filenames.

        * invoke.texi (Running Protoize): Update documentation.

2000-02-25 Mark Elbrecht <snowball3@bigfoot.com>

        * i386/djgpp.h (CPP_PREDEFINES): Remove Unix defines.

2000-02-25  John Wehle  (john@feith.com)

        * rtlanal.c (find_last_value): Allow NULL_RTX for valid_to.

2000-02-25  Anthony Green  <green@cygnus.com>

        * toplev.c (rest_of_compilation): Rebuild jump labels if
        combine_instructions has created a new direct jump.
        * combine.c (try_combine): Add new_direct_jump_p argument.  Set it
        when appropriate.
        (combine_instructions): Call try_combine with new argument.
        Return non-null value when new direct jump instruction is created.
        * rtl.h: combine_instructions returns an int.

Fri Feb 25 19:49:08 2000  Jeffrey A Law  (law@cygnus.com)

        * cse.c (cse_insn): Replace the PATTERN of the insn with an new
        jump when changing a computed jump into a jump to a known
        target.

Fri Feb 25 19:22:44 2000  Graham Stott <grahams@rcp.co.uk>

        * resource.c (mark_referenced_resources): Changed use SET_DEST (...)
        to XEXP (..., 0) on RTL nodes which are not SET or CLOBBER.

        * i386.md (define_expand "clrstrsi"): Fix typo.

Fri Feb 25 18:49:39 2000  "K. Richard Pixley" <rich@microunity.com>

        * rtl.texi: Fix typo.

Fri Feb 25 20:02:35 2000  J"orn Rennecke <amylaar@cygnus.co.uk>

        * sh.c (calc_live_regs): Multiply value assigned to *COUNT_PTR by
        UNITS_PER_WORD.  Change caller initial_elimination_offset.
        (rounded_frame_size): Take into account that argument pushed has
        changed.  Fix TARGET_ALIGN_DOUBLE problem.

2000-02-25  Geoff Keating  <geoffk@cygnus.com>

        * haifa-sched.c (schedule_block): Explain the real reason
        we delete REG_SAVE_NOTEs on the first insn of a block.
        Don't delete REG_SAVE_NOTES for NOTE_INSN_SETJMP.

2000-02-24  Mark Mitchell  <mark@codesourcery.com>

        * input.h (push_srcloc): New function.
        (pop_srcloc): Likewise.
        * toplev.c (push_srcloc): Define it.
        (pop_srcloc): Likewise.

2000-02-24  Richard Henderson  <rth@cygnus.com>

        * flow.c (life_analysis): When collecting reg info, clear
        regs_ever_live.

Thu Feb 24 22:06:52 2000  J"orn Rennecke <amylaar@cygnus.co.uk>

        Fix bug exposed by reload.c no longer rounding the frame
        size to BIGGEST_ALIGNMENT:
        * sh.c (rounded_frame_size): New function.
        (sh_expand_prologue, sh_expand_epilogue): Use it.
        (initial_elimination_offset): Likewise.

Thu Feb 24 20:04:11 2000  J"orn Rennecke <amylaar@cygnus.co.uk>

        Fix breakage from 6th Feb thread_prologue_and_epilogue_insns change:
        * sh-protos.h (sh_need_epilogue): Declare.
        * sh.c (sh_need_epilogue_known): New static variable.
        (sh_need_epilogue): New function.
        (function_epilogue): Clear need_epilogue_known.
        * sh.md (return): Split into expander / insn pattern.
        Make the expander conditional on ! sh_need_epilogue ().

2000-02-24  Nathan Sidwell  <nathan@codesourcery.com>

        * machmode.h (get_mode_alignment): Declare.
        (GET_MODE_ALIGNMENT): Call it.
        * stor-layout.c (get_mode_alignment): New function. Make
        sure alignment is always power of 2.

2000-02-23  Zack Weinberg  <zack@wolery.cumb.org>

        * i386.h: Remove useless definition of "I386" and misleading
        comment above it.

2000-02-23  Zack Weinberg  <zack@wolery.cumb.org>

        * tree.h (TREE_SET_PERMANENT): New macro.  Document conditions
        under which TREE_PERMANENT will be set.
        * tree.c (make_node, copy_node, make_tree_vec, tree_cons,
        build1): Use TREE_SET_PERMANENT.
        * print-tree.c (print_node): Don't report value of
        TREE_PERMANENT if ggc_p is true.

        * c-common.c (c_get_alias_set): Don't use TREE_PERMANENT to
        decide whether to give a type a new alias set.
        * objc/objc-act.c (build_objc_string_object): Never copy the string.
        * tree.c (make_node): Set DECL_IN_SYSTEM_HEADER irrespective
        of value of 'obstack'.


2000-02-24  Michael Hayes  <m.hayes@elec.canterbury.ac.nz>

        * config/c4x/c4x.c (c4x_process_after_reload): Split all insns.

2000-02-23  Alexandre Oliva  <oliva@lsd.ic.unicamp.br>

        * cpplib.h (enum cpp_token): Added CPP_WCHAR and CPP_WSTRING.
        * cpplib.c (cpp_get_token): Produce them.
        * cppexp.c (cpp_lex): Handle them.

2000-02-23  Nick Clifton  <nickc@cygnus.com>

        * config/arm/arm.c (arm_comp_type_attributes): Simply and
        comment tests on type attributes.

Wed Feb 23 16:42:21 2000  J"orn Rennecke <amylaar@cygnus.co.uk>

        * final.c (shorten_branches): Make value passed to LOOP_ALIGN
        conform to documentation.
        * sh.h (LOOP_ALIGN): If aligning loops, call sh_loop_align
        to check for special cases.
        * sh-protos.h (sh_loop_align): Declare.
        * sh.c (sh_loop_align): Define.

2000-02-22  Andrew Haley  <aph@cygnus.com>

        * config/mips/mips.h (GAS_ASM_SPEC): Pass -mgp32/-mgp64 to gas.
        (SIZE_TYPE): Is 32 bits when using -mgp32.
        (PTRDIFF_TYPE): Ditto.

Wed Feb 23 07:26:27 2000  Richard Kenner  <kenner@vlsi1.ultra.nyu.edu>

        * diagnostic.c (init_output_buffer): Handle case of null PREFIX.

2000-02-23  Zack Weinberg  <zack@wolery.cumb.org>

        * config/i386/i386.h: If IN_TARGET_LIBS is defined, make
        BIGGEST_FIELD_ALIGNMENT a constant.

2000-02-21  Jason Merrill  <jason@casey.cygnus.com>

        * dwarf2out.c (output_line_info): Put the marker for the end of
        the line number info at the actual end.
        (gen_struct_or_union_type_die): Use decl_function_context
        to check for local classes.
        * dwarfout.c (output_type): Likewise.

Tue Feb 22 01:38:57 2000  Jeffrey A Law  (law@cygnus.com)

        * pa.h (FUNCTION_ARG_PASS_BY_REFERENCE): Handle pass-by-reference
        for arguments with a mode, but no type.
        (FUNCTION_ARG_CALLEE_COPIES): Similarly.
        * t-pa (LIB2FUNCS_EXTRA): Add quadlib.asm.
        * pa/long_double.h: New file.
        * configure.in (hpux10, hpux11 configurations): hpux10 and hpux11
        both have 128bit wide long doubles.
        * configure: Rebuilt.

2000-02-21  Kaveh R. Ghazi  <ghazi@caip.rutgers.edu>

        * defaults.h (ASM_OUTPUT_ASCII): Constify a char*.

        * flow.c (get_common_dest, chain_reorder_blocks, make_reorder_chain,
        fixup_reorder_chain, skip_insns_between_block): Add static prototypes.
        (life_analysis): Wrap variable `i' with macro ELIMINABLE_REGS.

        * haifa-sched.c (rank_for_schedule): Don't cast away const-ness.

        * integrate.c (compare_blocks, find_block): Likewise.

        * rtl.c (fatal_with_file_and_line): Add ATTRIBUTE_PRINTF_2.

        * rtl.h (set_file_and_line_for_stmt): Constify a char*.

        * stmt.c (stmt_status, set_file_and_line_for_stmt,
        expand_asm_operands): Likewise.

Mon Feb 21 17:06:27 2000  Jason Eckhardt  <jle@cygnus.com>

        * predict.c (estimate_probability): Added the pointer heuristic to
        the collection of static branch predictors.

2000-02-21  Catherine Moore  <clm@cygnus.com>

        * config/mips/mips.h (ASM_SPEC): Add -mfix700.
        * invoke.texi (-mfix7000): Document.

2000-02-21  Gabriel Dos Reis  <gdr@codesourcery.com>

        * diagnostic.c (init_output_buffer): Make it possible to output at
        least 32 characters if we're given a too long prefix.

2000-02-20  Mark Mitchell  <mark@codesourcery.com>

        * varasm.c (initializer_constant_valid_p): Call
        lang_expand_constant to simplify the constant.

2000-02-20  Bruce Korb  <bkorb@gnu.org>

        * fixinc/inclhack.def(stdio_va_list):
        typedef needs to be disabled.
        * fixinc/inclhack.sh: regen
        * fixinc/fixincl.x: regen

2000-02-20  Geoff Keating  <geoffk@cygnus.com>

        * print-rtl.c (print_rtx): Don't print addresses when
        flag_dump_unnumbered.

2000-02-20  Kaveh R. Ghazi  <ghazi@caip.rutgers.edu>

        * sparc.c (sparc_output_scratch_registers): Mark parameter with
        ATTRIBUTE_UNUSED.
        (sparc_va_arg, sparc_flat_output_function_prologue,
        sparc_flat_output_function_epilogue): Cast value to unsigned in
        comparison.
        (sparc_emit_float_lib_cmp): Remove unused variable `cmp'.

        * sparc.md: Add default case in switch.

2000-02-19  Richard Henderson  <rth@cygnus.com>

        * c-typeck.c (add_pending_init): Don't abort for multiple
        fields at the same offset.
        (pending_init_member): Test the correct member.

2000-02-19  Herman A.J. ten Brugge <Haj.Ten.Brugge@net.HCC.nl>

        * except.c (start_dynamic_handler) : Use TYPE_MODE (integer_type_node)
        instead of SImode.
        (start_catch_handler) : Same.

2000-02-19  Brad Lucier  (lucier@math.purdue.edu)

        * Makefile.in: Have flow.o depend on $(EXPR_H)

Sat Feb 19 18:43:13 2000  Richard Kenner  <kenner@vlsi1.ultra.nyu.edu>

        * c-common.c (decl_attributes): Set DECL_SIZE_UNIT.
        * c-decl.c (duplicate_decls, finish_enum): Likewise.
        (finish_decl): Remove -Wlarger-than code from here.
        * flags.h (id_clash_len): Now int.
        (larger_than_size): Now HOST_WIDE_INT.
        * fold-const.c (size_int_wide): No more HIGH parm; NUMBER is signed.
        Clean up checking to see if in table.
        (make_bit_field_ref): Remove extra parm to bitsize_int.
        * ggc-common.c (ggc_mark_tree_children): Mark DECL_SIZE_UNIT.
        * print-tree.c (print_node): Print DECL_SIZE_UNIT and TYPE_SIZE_UNIT.
        * stmt.c (expand_decl): Use DECL_SIZE_UNIT for stack checking size
        and for computing size of decl.
        * stor-layout.c (layout_decl): Set DECL_SIZE_UNIT.
        Move -Wlarger-than code to here.
        (layout_record): Remove extra arg to bitsize_int.
        Set TYPE_BINFO_SIZE_UNIT.
        (layout_union): Remove extra arg to bitsize_int.
        Use proper type for size of QUAL_UNION.
        (layout_type): Remove extra arg to bitsize_int.
        * toplev.c (id_clash_len): Now int.
        (larger_than_size): Now HOST_WIDE_INT.
        (decode_W_option): Clean up id-clash and larger-than- cases.
        * tree.c (get_identifier, maybe_get_identifier): Remove unneeded casts.
        (expr_align, case FUNCTION_DECL): DECL_ALIGN is not defined.
        * tree.h (BINFO_SIZE_UNIT, TYPE_BINFO_SIZE_UNIT, DECL_SIZE_UNIT): New.
        (struct tree_decl): New field size_unit.
        (size_int_wide): No HIGH operand; NUMBER is now signed.
        (size_int_2): Deleted.
        (size_int, bitsize_int): Don't use it and rework args.
        * varasm.c (assemble_variable, output_constructor): Use DECL_SIZE_UNIT.

Fri Feb 18 20:01:58 2000  Jeffrey A Law  (law@cygnus.com)

        * pa/quadlib.asm (_U_QFgt, _U_Qfge): Fix flags for _U_Qfcmp call.

2000-02-18  Geoff Keating  <geoffk@cygnus.com>

        * invoke.texi (Warning Options): Add an explanation of why
        you might want the -Wfloat-equal flag.

Fri Feb 18 20:08:57 2000  Richard Kenner  <kenner@vlsi1.ultra.nyu.edu>

        * bitmap.c (bitmap_operation): Avoid using -1 for index since unsigned.
        * cppinit.c (new_pending_define): Add cast to avoid warning.
        * expmed.c (extract_bit_field): Likewise.
        * flow.c (enum reorder_skip_type): New type.
        (skip_insns_between_blcok): New it.
        Rework to avoid warning about possibly undefined variable.
        * function.c (assign_parms): Make thisparm_boundary unsigned.
        * genrecog.c (write_switch): Cast XWINT result to int.
        * lcm.c: Many static fcns and vars now #ifdef OPTIMIZE_MODE_SWITCHING.
        * mips-tfile.c (init_file): Make two versions of FDR intializer:
        one for MIPS and one for Alpha.
        (get_tag, copy_object): Add casts to avoid warnings.
        * optabs.c (init_one_libfunc): Cast NAME to (char *).
        * reload.c (find_reloads): Make TYPE enum reload_type.
        * sbitmap.c (dump_sbitmap): J is unsigned; don't use "1L".
        * unroll.c (unroll_loop): Initialize UNROLL_NUMBER.
        * varasm.c (compare_constant_1): Add cast to avoid warning.
        * config/alpha/alpha.c (alpha_emit_xfloating_libcall): Cast FUNC
        to (char *).
        (alpha_expand_unaligned_load, alpha_expand_unaligned_store):
        Cast switch operand of size to int.
        (alpha_expand_epilogue): Always initialize fp_offset and sa_reg.
        * config/alpha/alpha.h (INITIAL_ELIMINATION_OFFSET): Add abort
        in unhandled case.

2000-02-18  Nick Clifton  <nickc@cygnus.com>

        * config/arm/elf.h (ASM_OUTPUT_ALIGN): Do not generate
        anything for an alignment of zero.

        * config/arm/thumb.h (ASM_OUTPUT_ALIGN): Do not generate
        anything for an alignment of zero.

2000-02-18  Martin von Loewis  <loewis@informatik.hu-berlin.de>

        * gcc.texi (Bug Reporting): Refer to bugs.html.
        (Bug Lists): Likewise.
        * system.h (GCCBUGURL): New preprocessor define.
        * rtl.c (fancy_abort): Use it.
        * gcc.c (main): Likewise.

2000-02-18  Richard Henderson  <rth@cygnus.com>

        * flow.c (INSN_VOLATILE, SET_INSN_VOLATILE, uid_volatile): Remove.
        (life_analysis_1): Subsume into ...
        (life_analysis): ... here.  Force PROP_REG_INFO off after reload.
        Use update_life_info for the relaxation.
        (update_life_info): Update REG_BASIC_BLOCK for registers live on
        entry and regs_live_at_setjmp.
        (set_noop_p): Simplify.
        (notice_stack_pointer_modification_1): Renamed from s/_1//.
        (record_volatile_insns): Split into ...
        (delete_noop_moves): ... here,
        (notice_stack_pointer_modification): ... here,
        (insn_dead_p): ... and here.
        (propagate_block): Don't query INSN_VOLATILE.
        (mark_used_regs): Mind !PROP_REG_INFO.
        * toplev.c (rest_of_compilation): Call mark_constant_function here,
        not in life_analysis.

Fri Feb 18 01:29:22 EST 2000  John Wehle  (john@feith.com)

        * loop.c (canonicalize_condition): New function,
        broken out of get_condition.
        (get_condition): Use it.
        * expr.h (canonicalize_condition): Prototype it.

        * tree.h (tree_int_cst_msb): Declare.
        * tree.c (tree_int_cst_msb): New function.

2000-02-17  Mark Mitchell  <mark@codesourcery.com>

        * stmt.c (set_file_and_line_for_stmt): Don't crash if cfun->stmt
        isn't set.

        * invoke.texi (-fmessage-length=n): Document.

2000-02-17  Jason Merrill  <jason@casey.cygnus.com>

        * bitmap.c (bitmap_operation): Don't leak bitmap elements.

2000-02-17  Mark Mitchell  <mark@codesourcery.com>

        * function.c (thread_prologue_and_epilogue_insns): Put a line note
        after the prologue.

2000-02-17  Nick Clifton  <nickc@cygnus.com>

        * config/arm/thumb.c: Replace includes of system headers with
        #include "system.h".

2000-02-16  Richard Henderson  <rth@cygnus.com>

        * configure.in (alpha-linux*, alpha-netbsd) [extra_parts]:
        Add crtbeginS.o and crtendS.o.
        * alpha/elf.h (STARTFILE_SPEC): Use crtbeginS.o.
        (ENDFILE_SPEC): Use crtendS.o.
        * alpha/t-crtbe (crtbeginS.o, crtendS.o): New targets.

        * alpha/crtbegin.asm (__do_frame_takedown): Merge into ...
        (__do_global_dtors_aux): ... here.  Call __cxa_finalize if
        shared and present.
        (__dso_handle): New variable.
        * alpha/crtend.asm (__do_global_ctors_aux): Remove runtime
        bias to __CTOR_END__.

2000-02-16  Richard Henderson  <rth@cygnus.com>

        * Makefile.in (s-crtS, crtbeginS, crtendS): Prefix usage with $(T).

Wed Feb 16 21:40:04 2000  Hans-Peter Nilsson  <hp@bitrange.com>

        * longlong.h (__clz_tab): Declare as static to match definition.

2000-02-16 Mark Elbrecht <snowball3@bigfoot.com>

        * i386/xm-djgpp.h (LIBSTDCXX): Delete. Moved to config/i386/djgpp.h.
        (XREF_FILE_NAME): Define.

        * i386/djgpp.h (DATA_SECTION_ASM_OP): Define.
        (EH_FRAME_SECTION_ASM_OP): Define.
        (IDENT_ASM_OP): Define.
        (TEXT_SECTION_ASM_OP): Define.
        (CPP_SPEC): Define.
        (CTORS_SECTION_ASM_OP): Define.
        (CTOR_SECTION_FUNCTION): Use it.
        (DTORS_SECTION_ASM_OP): Define.
        (DTOR_SECTION_FUNCTION): Use it.

2000-02-16  Zack Weinberg  <zack@wolery.cumb.org>

        * reg-stack.c (emit_swap_insn): Do not put a new insn before a
        NOTE_BASIC_BLOCK.

        * flow.c (dump_regset, debug_regset, dump_bb, debug_bb,
        debug_bb_n): New functions.
        (dump_flow_info, print_rtl_with_bb): Use dump_regset.
        * basic-block.h: Prototype new functions.

Wed Feb 16 21:07:53 2000  Denis Chertykov  <denisc@overta.ru>

        * configure.in: Add support for avr target.
        * configure: Rebuilt.

        * invoke.texi: Add AVR invocation docs.
        * install.texi: Add information about AVR.
        * md.texi: Add AVR constraint letters description.
        * extend.texi: Add description for AVR specific attributes.

2000-02-16  Jason Merrill  <jason@casey.cygnus.com>

        * fixinc/fixinc.svr4: Wrap byteorder.h with extern "C".

2000-02-16  Nick Clifton  <nickc@cygnus.com>

        * emit-rtl.c (emit_insn): Move RTL check into make_insn_raw.
        (make_insn_raw): Move RTL check here.

2000-02-16  Kaveh R. Ghazi  <ghazi@caip.rutgers.edu>

        * version.c: Include gansidecl.h and version.h.

        * version.h: Wrap entire file in macro __GCC_VERSION_H__.

        * configure.in (gcc_version): When setting, narrow search to
        lines containing `version_string'.

        * Makefile.in (mainversion): Likewise.
        (GCC_H): New variable.
        (gcc.h): Delete target.
        (gcc.o, gccspec.o, cppspec.o): Depend on $(GCC_H), not gcc.h.
        (version.o): Depend on version.h.
        (dbxout.o): Don't depend on gcc.h.

Wed Feb 16 15:04:49 2000  Hans-Peter Nilsson  <hp@bitrange.com>
                          Michael Meissner  <meissner@cygnus.com>

        * md.texi (Simple Constraints): Add item about whitespace.
        * genoutput.c (strip_whitespace): New.
        (scan_operands) [MATCH_OPERAND, MATCH_SCRATCH]: Call
        strip_whitespace for constraints.
        Test pointer using NULL, not 0.

2000-02-16  Alexandre Oliva  <oliva@lsd.ic.unicamp.br>

        * cpplib.c (do_line): Pedwarn for #line > 32767.

        * c-lex.c (readescape): Warn about '\x', but do not reject it.

2000-02-15  Jonathan Larmour  <jlarmour@redhat.co.uk>

        * gcc.c (default_compilers): Add new __GNUC_PATCHLEVEL__ define
        to default cpp spec.
        (do_spec_1): Add support for %v3 spec used by __GNUC_PATCHLEVEL__.
        * cpp.texi: Document __GNUC_PATCHLEVEL__.
        * cpp.1: Likewise.

        * objc/lang-specs.h: Add new __GNUC_PATCHLEVEL__ define to
        default spec.

2000-02-15  Denis Chertykov  <denisc@overta.ru>

        * configure.in: Add support for avr target.

Wed Feb 16 03:21:43 2000  J"orn Rennecke <amylaar@cygnus.co.uk>

        * sh.h (OVERRIDE_OPTIONS): Don't set sh_addr_diff_vec_mode.
        (sh_addr_diff_vec_mode): Don't declare.
        * sh.c (sh_addr_diff_vec_mode): Delete.

Wed Feb 16 01:27:52 2000  J"orn Rennecke <amylaar@cygnus.co.uk>

        * sh.md (mulsi3_highpart): Add REG_EQUAL note to last insn.

Wed Feb 16 00:58:06 2000  J"orn Rennecke <amylaar@cygnus.co.uk>

        * sh.md (udivsi3_i1, divsi3_i1, umulhisi3_i, mulhisi3_i): Name.
        (smulsi3_highpart_i): Name.
        (udivsi3): Wrap emitted insns in REG_LIBCALL / REG_RETVAL notes.
        (divsi3, mulhisi3, umulhisi3, mulsidi3, umulsidi3): Likewise.
        (smulsi3_highpart, umulsi3_highpart): Likewise.

        (mulsidi3_i, umulsidi3_i): Make rtl describe operation
        correctly independent of endianness.
        (mulsidi3, umulsidi3): Now define_insn.  Hide details that
        confuse the optimizers.
        (mulsidi3+1, umulsidi3+1): New define_split.

Tue Feb 15 23:22:26 2000  Andrew Haley  <aph@cygnus.com>

        * config/sh/sh.md: Guard insn splits against illegal registers.
        * config/sh/sh.h: Correct comment about macros.

Tue Feb 15 22:30:36 2000  J"orn Rennecke <amylaar@cygnus.co.uk>
                          Andrew MacLeod  <amacleod@cygnus.com>

        * Makefile.in (lcm.o): Depend on insn-attr.h.
        * basic-block.h (optimize_mode_switching): Declare.
        * lcm.c (tm_p.h, insn-attr.h): #include.
        (seginfo, bb_info): New structs.
        (antic, transp, comp, delete, insert) : New file-scope static variables.
        (new_seginfo, add_seginfo, make_preds_opaque, reg_dies): New functions.
        (reg_becomes_live, optimize_mode_switching): Likewise.
        * tm.texi: Add description of mode switching macros.
        * toplev.c (rest_of_compilation): Call optimize_mode_switching.

        * sh-protos.h (remove_dead_before_cse): Remove prototype.
        (fldi_ok, fpscr_set_from_mem): New prototypes.
        * sh.h (OPTIMIZATION_OPTION): Remove sh_flag_remove_dead_before_cse set.
        (CONST_DOUBLE_OK_FOR_LETTER_P, SECONDARY_INPUT_RELOAD_CLASS):
        Disable fldi for (TARGET_SH4 && ! TARGET_FMOVD).
        (sh_flag_remove_dead_before_cse): Remove declaration.
        (NUM_MODES_FOR_MODE_SWITCHING, OPTIMIZE_MODE_SWITCHING): New macros.
        (MODE_USES_IN_EXIT_BLOCK, MODE_NEEDED, MODE_AT_ENTRY): Likewise.
        (MODE_PRIORITY_TO_MODE, EMIT_MODE_SET): Likewise.
        * sh.c (broken_move): Disable fldi for (TARGET_SH4 && ! TARGET_FMOVD).
        (barrier_align): Allow for JUMP_INSNS containing a parallel.
        (machine_dependent_reorg): Remove sh_flag_remove_dead_before_cse set.
        (fldi_ok): New function.
        (get_fpscr_rtx): Add fpscr_rtx as GC root.
        (emit_sf_insn): Only generate fpu switches when optimize < 1.
        (emit_df_insn): Likewise.
        (expand_fp_branch, emit_fpscr_use, remove_dead_before_cse): Delete.
        (sh_flag_remove_dead_before_cse): Delete.
        (get_free_reg, fpscr_set_from_mem): New functions.
        * sh.md (movdf, movsf): Remove no_new_pseudos code.
        (return): Remove emit_fpscr_use / remove_dead_before_cse calls.

2000-02-15  Loren Rittle  <ljrittle@acm.org>

        * ginclude/stddef.h: Correct usage of _BSD_RUNE_T_ for FreeBSD.

2000-02-15  Kaveh R. Ghazi  <ghazi@caip.rutgers.edu>

        * Makefile.in (TREE_H, collect2.o, gcc.h, mips-tfile.o, cccp.o,
        cpphash.o, cppinit.o, protoize.o, unprotoize.o): Depend on version.h.

        * cccp.c: Include version.h and/or don't declare `version_string'.
        * collect2.c: Likewise.
        * alpha.c: Likewise.
        * arm/aof.h: Likewise.
        * arm/coff.h: Likewise.
        * arm/elf.h: Likewise.
        * arm/pe.h: Likewise.
        * arm/tcoff.h: Likewise.
        * arm/telf.h: Likewise.
        * arm/tpe.h: Likewise.
        * arm/vxarm.h: Likewise.
        * convex/convex.c: Likewise.
        * i386/dgux.c: Likewise.
        * i386/sun386.h: Likewise.
        * m88k/m88k.c: Likewise.
        * mcore/mcore-pe.h: Likewise.
        * mips/mips.h: Likewise.
        * romp/romp.h: Likewise.
        * sh/sh.c: Likewise.
        * cpphash.c: Likewise.
        * cppinit.c: Likewise.
        * dwarf2out.c: Likewise.
        * dwarfout.c: Likewise.
        * gcc.c: Likewise.
        * gcc.h: Likewise.
        * mips-tfile.c: Likewise.
        * protoize.c: Likewise.
        * toplev.c: Likewise.
        * tree.h: Likewise.

        * version.c (version_string): Constify a char*.

        * version.h: New file.

2000-02-14  Nick Clifton  <nickc@cygnus.com>

        * configure.in: Add mcore-elf and mcore-pe targets.
        * configure: Regenerate.

        * NEWS: Add note that MCore port has been contributed.

        * invoke.texi: Document command line switches for MCore port.
        * install.texi: Add MCore to list of supported targets.

2000-02-14  Geoff Keating  <geoffk@cygnus.com>

        * collect2.c (main) [COLLECT_EXPORT_LIST]: If we have frames,
        then we will need to import the frame handling functions.
        (scan_prog_file) [COLLECT_EXPORT_LIST]: We will also need
        to import the frames themselves.

Mon Feb 14 13:31:01 2000  Stan Cox  <scox@cygnus.com>
                          Jason Eckhardt  <jle@cygnus.com>

        * basic_block.h: Added prototype for reorder_basic_blocks.
        * toplev.c: Changes to add -freorder-blocks and graph dump after
        block reordering is done.
        * flow.c (reorder_block_def): New structure for use during block
        reordering.
        (REORDER_BLOCK_*): New macros to access members of above structure.
        (skip_insns_between_block, get_common_dest, chain_reorder_blocks,
        make_reorder_chain, fixup_reorder_chain, reorder_basic_blocks): New
        functions for block reordering.

Mon Feb 14 11:24:44 2000  Hans-Peter Nilsson  <hp@bitrange.com>

        * gcc.texi (Passes): Fix typo.
        * md.texi (Standard Names): Ditto.
        * tm.texi (Storage Layout): Ditto.

2000-02-13  Zack Weinberg  <zack@wolery.cumb.org>

        * cpplib.c (do_define): Only free the old definition if it
        actually had one.

2000-02-13   Neil Booth  <NeilB@earthling.net>

        * cppfiles.c (read_and_prescan): When emitting deferred
        newlines, test speccase[] again instead of checking each
        possible whitespace character in turn.  When we encounter \r,
        look behind for \n first, then ahead.

2000-02-13  Zack Weinberg  <zack@wolery.cumb.org>

        * cse.c (cse_altered): New internal flag.
        (cse_insn): Set it if we changed an insn.
        (cse_main): Clear cse_altered before each basic block.
        Only garbage collect if cse_altered is true afterward.

Sun Feb 13 14:12:28 2000  Rainer Orth  <ro@TechFak.Uni-Bielefeld.DE>

        * sparc/sol2.h (LIB_SPEC): Link -ldl if profiling.

Sun Feb 13 13:21:55 2000  Jeffrey A Law  (law@cygnus.com)

        * combine.c (simplify_comparison): Fix typo.

Sun Feb 13 12:57:52 2000  Neil Booth <NeilB@earthling.net>

        * prefix.c (concat, lookup_key): Use xmalloc and xrealloc
        consistently.

2000-02-13  Michael Hayes  <m.hayes@elec.canterbury.ac.nz>

        * flow.c (flow_loop_tree_node_add): Use better algorithm by passing
        previously inserted node instead of root node.  Caller changed.

2000-02-13  Michael Hayes  <m.hayes@elec.canterbury.ac.nz>

        * basic-block.h (FLOW_LOOP_FIRST_BLOCK, FLOW_LOOP_LAST_BLOCK): Delete.

2000-02-12  Kaveh R. Ghazi  <ghazi@caip.rutgers.edu>

        * crtstuff.c (__do_global_ctors_aux, __reg_frame_ctor,
        __dereg_frame_dtor): Add prototype argument.

        * gthr-dce.h (__gthread_active_p, __gthread_once): Likewise.

        * gthr-posix.h (__gthread_active_p, __gthread_once): Likewise.

        * gthr-solaris.h (__gthread_active_p, __gthread_once): Likewise.

        * gthr-vxworks.h (__gthread_once): Likewise.

        * gthr-win32.h (__gthread_active_p, __gthread_once): Likewise.

Sat Feb 12 01:44:26 MET 2000  Jan Hubicka  <jh@suse.cz>

        * i386.c (ix86_emit_restore_regs_using_mov): Break out from ...
        (ix86_expand_epilogue): ... here. Use mov instead of add to restore
        stack pointer in functions w/o saved registers, output LEAVE more often
        on TARGET_USE_LEAVE machines.

2000-02-07  Dmitri Makarov  <dim@wrs.com> & Bernd Schmidt <bernds@redhat.com>

        * config/arm/arm.c (arm_init_cumulative_args); New function:
        Initlaise the CUMULATIE_ARGS strcuture for a function
        defintion.
        (arm_function_arg): New function: Determine where to place a
        function's argument.  Also handles deciding the function's
        call cookie.
        (current_file_function_operand): New function: Return true if
        the symbol is a function which has already been compiled.
        (arm_is_long_call_p): New function: Return true if the
        indicated function should be called via a long call.
        (arm_valid_type_attribute_p): New function: Return true if the
        attribute is a valid, arm specific, attribute.
        (arm_comp_type_attribute): New function: Return true if the
        two types have compatable, arm specific, attributes.

        * config/arm/arm.h (CUMULATIVE_ARGS): Redefine to be a
        structure.
        (FUNCTION_ARG): Redefine to call arm_function_arg.
        (FUNCTION_ARG_PARTIAL_NREGS): Redefine to use correct
        structure field.
        (INIT_CUMULATIVE_ARGS): Redefine to call
        arm_init_cumulative_args.
        (FUNCTION_ARG_ADVANCE): Redefine to use correct structure
        field.
        (SETUP_INCOMING_VARARGS): Redefine to use correct structure
        field.
        (ARM_MARK_NEARBY_FUNCTION): New macro: Mark already compiled
        functions.
        (ENCODE_SECTION): Add call to ARM_MARK_NEARBY_FUNCTION.
        (VALID_MACHINE_TYPE_ATTRIBUTE): Define.
        (COMP_TYPE_ATTRIBUTES): Define.

        * config/arm/arm.md (call): Call arm_is_long_call_p to decide
        if a long call is needed.
        (call_value): Call arm_is_long_call_p to decide if a long call
        is needed.
        (call_symbol): Call arm_is_long_call_p to decide if a long call
        is needed.

        * config/arm/arm-protos.h: Add prototype for arm_is_long_call_p.

2000-02-11  Denis Chertykov  <denisc@overta.ru>

        * README.AVR: New file with information about the avr ports.
        * config/avr: New directory with avr port files.

2000-02-11  Andreas Jaeger  <aj@suse.de>

        * fixinc/Makefile.in (FIXINC_DEFS): Remove unneeded @fixinc_defs@.

2000-02-11  Zack Weinberg  <zack@wolery.cumb.org>

        * cpphash.c: Fix formatting, update commentary.
        (dump_definition): Take three separate arguments instead of a
        MACRODEF structure argument.
        * cpphash.h: Update prototype of dump_definition.
        * cppinit.c (cpp_finish): Update call of dump_definition.

        * cpplib.c (do_define): Always create new hash entry with
        T_MACRO type.  Remove redundant check for redefinition of
        poisoned identifier.  Update call of dump_definition.
        (do_undef): Don't call check_macro_name.  Rename sym_length to
        len.
        (do_error, do_warning): Don't use copy_rest_of_line or
        SKIP_WHITE_SPACE.
        (do_warning): Don't use pedwarn for the actual warning,
        only the notice about its not being in the standard.  (Fixes
        bug with #warning in system headers.)
        (do_ident): Stricter argument checking - accept only a single
        string after #ident.  Also, macro-expand the line.
        (do_xifdef): Use cpp_defined.  De-obfuscate.

        (do_pragma): Split out specific pragma handling to separate
        functions.  Use get_directive_token.  Update commentary.  Do
        not pass on #pragma once or #pragma poison to the front end.
        (do_pragma_once, do_pragma_implementation, do_pragma_poison,
        do_pragma_default): New.

Feb 11 12:30:53 2000  Jeffrey A Law  (law@cygnus.com)

        * jump.c (jump_optimize_1): The first operand in a relational
        can be a CONST_INT.
        * optabs.c (emit_conditional_move): Handle relationals which
        have a known true/false result.

2000-02-11  Geoff Keating  <geoffk@cygnus.com>

        * function.c (thread_prologue_and_epilogue_insns): Don't insert
        a RETURN insn into a block which already ends with a jump.

2000-02-11  Geoff Keating  <geoffk@cygnus.com>

        * haifa-sched.c (BUF_LEN): Increase a lot.

2000-02-11  Nick Clifton  <nickc@cygnus.com>

        * configure.in: Add tm_p_file specification for thumb targets.
        * configure: Regenerate.

        * config/arm/thumb-protos.h: New file: Prototypes for exported
        functions defined in thumb.c.

2000-02-11  Robert Lipe  <robertl@sco.com>

        * Makefile.in (bootstrap-lean): Remove additional files.
        (bootstrap2-lean): Likewise.
        (VOL_FILES): List of files for above.

2000-02-11  Nathan Sidwell  <nathan@acm.org>

        * cpphash.c (special_symbol): Remove spurious argument to
        cpp_lookup.

2000-02-11  Joel Sherrill (joel@OARcorp.com>

        * configure.in: (i*86-*-rtems*): Swapped elf and coff
        stanzas.
        * configure: Rebuilt.

2000-02-11  Rodney Brown  <RodneyBrown@pmsc.com>

        * pa-protos.h: Wrap function_arg_padding in TREE_CODE #ifdef.

Fri Feb 11 02:59:05 2000  Jeffrey A Law  (law@cygnus.com)

        * pa.c, pa.h: Remove trigraph sequences within comments.

Fri Feb 11 02:51:56 2000  Pavel Roskin <pavel_roskin@geocities.com>

        * invoke.texi (PPC Options): -mno-new-mnenomics -> -mold-mnemonics.

Fri Feb 11 02:48:30 2000  Brad Lucier  (lucier@math.purdue.edu)

        * sbitmap.h: Make SBITMAP_ELT_BITS unsigned.

2000-02-11  Michael Hayes  <m.hayes@elec.canterbury.ac.nz>

        * config/c4x/c4x.c (fp_zero_operand): Check for CONST_DOUBLE.

2000-02-11  Michael Hayes  <m.hayes@elec.canterbury.ac.nz>

        * config/c4x/c4x.h (ASM_GLOBALIZE_LABEL): Use c4x_global_label.
        (ASM_OUTPUT_EXTERNAL): Use c4x_external_ref.
        (ASM_OUTPUT_EXTERNAL_LIBCALL): Likewise.
        (ASM_FILE_END): Use c4x_file_end.
        * config/c4x/c4x.c (c4x_global_label): New function.
        (c4x_external_ref, c4x_file_end): Likewise.

        * config/c4x/c4x-protos.h (c4x_global_label): Add prototype.
        (c4x_external_ref, c4x_end_file): Likewise.

2000-02-10  Zack Weinberg  <zack@wolery.cumb.org>

        * cppexp.c: Don't include cpphash.h.
        (parse_charconst, cpp_lex): Use cpp_defined.
        (cpp_lex): Use get_directive_token throughout.  Remove
        unnecessary cases from switch.  Move assertion-handling code
        down to OTHER case.
        (cpp_parse_expr): If we see '+' or '-', check the context to
        determine if they are unary or binary operators.  Streamline
        the jumps a bit.  Do not call skip_rest_of_line.

        * cpplib.c: Make skip_rest_of_line and cpp_skip_hspace
        static.  Export get_directive_token.  Update commentary.
        (cpp_defined): New function.
        (do_define): Remove reference to T_PCSTRING.  Call
        free_definition to release memory for old definition, when
        redefining a macro.
        (eval_if_expression): Set only_seen_white to 0 before calling
        cpp_parse_expr.  Call skip_rest_of_line after it returns.
        (cpp_read_check_assertion): Don't preserve a pointer into the
        token buffer across a call to cpp_get_token.

        * Makefile.in (cppexp.o): Don't depend on cpphash.h.
        * cppfiles.c (redundant_include_p): Use cpp_defined.
        * cpphash.c (free_definition): New function.
        (delete_macro): Use it.  Update commentary.
        * cpphash.h: Typedef HASHNODE here.  Prototype cpp_lookup and
        free_definition.
        * cpplib.h: Don't typedef HASHNODE here. Delete T_PCSTRING
        from enum node_type.  Prototype cpp_defined and get_directive_token.
        Don't prototype cpp_lookup, skip_rest_of_line, or cpp_skip_hspace.

        * fix-header.c (check_macro_names): Use cpp_defined.
        (read_scan_file): Set inhibit_warnings and inhibit_errors in
        the options structure.

2000-02-10  Franz Sirl  <Franz.Sirl-kernel@lauterbach.com>

        * c-pragma.c (maximum_field_alignment): Remove duplicate declaration.

2000-02-10  Jason Merrill  <jason@casey.cygnus.com>

        * dwarf2out.c (add_abstract_origin_attribute): Check TREE_CODE (origin)
        rather than die->die_tag.

Thu Feb 10 16:26:49 2000  Richard Kenner  <kenner@vlsi1.ultra.nyu.edu>

        * combine.c (make_extraction, force_to_mode): Avoid warning on
        mixed-signedness conditionals.
        (make_field_assignment, nonzero_bits): Likewise.
        * expmed.c (store_fixed_bit_field): ALIGN arg now unsigned.
        (store_split_bit_field, extract_split_bit_field): Likewise.
        (extract_fixed_bit_field, store_bit_field,
        * expr.c: Change alignment to be unsigned everywhere.
        (move_by_pieces, store_constructor_field, store_constructor):
        Alignment parm is unsigned.
        (emit_block_move, emit_group_load, emit_group_store): Likewise.
        (clear_storage, emit_push_insn, compare_from_rtx): Likewise.
        (do_compare_rtx_and_jump): Likewise.
        (move_by_pieces_ninsns, clear_by_pieces): Likewise.
        Compare align with GET_MODE_ALIGNMENT.
        (expand_expr_unaligned): Pointer to alignment is pointer to unsigned.
        (get_inner_reference): Likewise.
        (copy_blkmode_from_reg, emit_push_insn): Remove unneeded casts.
        (expand_assignment): Local vars for alignment now unsigned.
        (store_constructor, store_field, expand_expr, do_jump): Likewise.
        (do_compare_and_jump): Likewise.
        (store_field): Call new function expr_align.
        * expr.h (emit_block_move, emit_group_load, emit_group_store):
        Alignment arg now unsigned.
        (clear_storage, emit_push_insn, compare_from_rtx): Likewise.
        (do_compare_rtx_and_jump, store_bit_field): Likewise.
        (extract_bit_field): Likewise.
        * fold-const.c (add_double): Add cast to eliminate signedness warning.
        * machmode.h (GET_MODE_ALIGNMENT): Result is unsigned.
        (get_best_mode): Alignment arg is unsigned.
        * rtl.h (move_by_pieces): Likewise.
        * store-layout.c (maximum_field_alignment, set_alignment):
        Now unsigned.
        (layout_decl): Alignment arg is now unsigned.
        Remove unneeded casts.
        (layout_record, layout_union, layout_type): Remove unneeded casts.
        Local alignment variables now unsigned.
        (get_best_mode): Alignment arg now unsigned.
        * tree.c (expr_align): New function.
        * tree.h (expr_align): Likewise.
        (maximum_field_alignment, set_alignment): Now unsigned.
        (get_inner_reference): Alignment argument is now pointer to unsigned.
        * varasm.c (assemble_variable): Add cast to eliminate warning.

Thu Feb 10 12:56:47 2000  Jim Wilson  <wilson@cygnus.com>

        * expmed.c (store_bit_field): If op0 and fieldmode are the same size,
        then store directly into op0.

        * calls.c (expand_call): When emitting a NOTE_INSN_SETJMP, search for
        the CALL_INSN, and emit the note immediately after it.

2000-02-10  Nick Clifton  <nickc@cygnus.com>

        * config/arm/thumb.md (epilogue): Include a (return) in the
        generated insn, and emit it using emit_jump_insn not
        emit_insn.

Thu Feb 10 18:28:59 MET 2000  Jan Hubicka  <jh@suse.cz>

        * function.c (assign_temp): Change zero-sized arrays to size 1.
        * integrate.c (expand_inline_function): Do not update
        stack_alignment_needed
        * i386.c (compute_frame_size): Remove #ifdef PREFERRED_FRAME_BOUNDARY,
        add some sanity checking, remove optimization for function with
        zero frame size.

2000-02-10  Kaveh R. Ghazi  <ghazi@caip.rutgers.edu>

        * flow.c (mark_regs_live_at_end): Delete unused variables.

        * ggc-page.c (ggc_page_print_statistics): bzero -> memset.

        * integrate.c (copy_rtx_and_substitute): Wrap variable `alignment'
        in macro FRAME_GROWS_DOWNWARD.

        * stmt.c (expand_end_bindings): Delete unused variable.

        * unroll.c (iteration_info): Mark parameter `loop' with
        ATTRIBUTE_UNUSED.

2000-02-10  Alexandre Oliva  <oliva@lsd.ic.unicamp.br>

        * fixinc/server.c (load_data): Return NULL if the marker line is
        not found.
        (run_shell): If load_data returns NULL, retry the command once, in
        a new shell.

        * configure: Rebuilt.

2000-02-09  Bruce Korb  <bkorb@gnu.org>

        * gcc/fixincludes:  ** DELETED **
        * gcc/fixcpp:  ** DELETED **
        * gcc/fixinc-nt.sed:  ** DELETED **
        * gcc/just-fixinc:  ** DELETED **
        * gcc/Makefile.in:  Removed out-dated commentary
        * gcc/configure.in: Removed fast-fixincludes disablement.
        * MAINTAINERS(Ian Taylor) moved to "Write after approval" group.

2000-02-09  Clinton Popetz  <cpopetz@cygnus.com>
        * function.c (thread_prologue_and_epilogue_insns): Uncomment
        last change.

2000-02-09  Richard Henderson  <rth@cygnus.com>

        * jump.c (delete_insn): Don't delete user labels at -O0.

2000-02-09  Robert Lipe  <robertl@sco.com>

        * Makefile.in (gen-protos): Don't depend on HOST_LIBDEPS.
        Don't link with HOST_LIBS.

2000-02-09  Zack Weinberg  <zack@wolery.cumb.org>

        * configure.in: Correct --help text for --with-dwarf2.
        Put tm-dwarf2.h after other tm files, if it's requested.
        * configure: Regenerate.
        * config/tm-dwarf2.h: #undef PREFERRED_DEBUGGING_TYPE before
        defining it.

2000-02-09  Zack Weinberg  <zack@wolery.cumb.org>

        * cpplib.h: Provide HASHNODE typedef and forward decl of
        struct hashnode only.  Kill cpp_hashnode typedef.  MACRODEF,
        DEFINITION, struct hashnode, struct macrodef, struct
        definition, scan_decls prototype, default defn of
        INCLUDE_LEN_FUDGE moved elsewhere.

        * cpphash.h: MACRODEF, DEFINITION, struct macrodef, struct
        definition, and struct hashnode moved here. Remove the unused
        'predefined' field from struct definition.  Replace the 'args'
        union with its sole member.  All users updated (cpphash.c).
        Delete HASHSTEP and MAKE_POS macros, and hashf prototype.  Add
        multiple include guard.

        * cpphash.c (hashf): Make static; use better algorithm; drop
        HASHSIZE parameter; return an unsigned int.
        (cpp_lookup): Drop HASH parameter.  PFILE parameter is
        used. Calculate HASHSIZE modulus here.
        (cpp_install): Drop HASH parameter. Calculate HASHSIZE modulus
        here.
        (create_definition): Drop PREDEFINITION parameter.
        * cpplib.c (do_define): Don't calculate a hash value here.
        Don't pass (keyword == NULL) to create_definition.

        * scan.h: Prototype scan_decls here.
        * cppfiles.c: Move INCLUDE_LEN_FUDGE default defn here.
        * cppexp.c, cppfiles.c, cppinit.c, cpplib.c, fix-header.c: All
        callers of cpp_lookup and cpp_install updated.

        * cpphash.c (macarg): Hoist all the flag diddling out of the
        function...
        (macroexpand): ... and out of the loop that calls macarg.
        Skip over the initial paren before macro arguments with
        cpp_get_non_space_token; point may be some distance before
        that paren.  Abort if it's not there.

        * cpplib.c (parse_clear_mark): Delete function.
        (parse_set_mark, parse_goto_mark): Make static.
        (ACTIVE_MARK_P): New macro.
        (skip_block_comment, skip_line_comment): Do not bump the line
        if ACTIVE_MARK_P is true.
        (cpp_pop_buffer): The buffer to be popped may not have an
        active mark.
        (cpp_get_token): When looking for the initial paren before
        macro arguments, only set a mark in a file buffer, Always
        return to that mark before proceeding to call macroexpand or
        return a NAME token.

        * cpplib.h: Remove prototypes of parse_set_mark,
        parse_clear_mark, parse_goto_mark.
        (struct cpp_options): Rename 'put_out_comments' to
        'discard_comments' and invert its sense.
        * cppinit.c, cpphash.c, cpplib.c: All users of
        put_out_comments changed to use discard_comments, with
        opposite sense.

2000-02-09  Clinton Popetz  <cpopetz@cygnus.com>

        * function.c (thread_prologue_and_epilogue_insns): Don't delete
        the edge from a block that both jumps and falls through to the
        fallthru block.

2000-02-09  Scott Bambrough  <scottb@netwinder.org>

        * config/arm/arm.md (movsi): In PIC mode, make sure that a
        constant source address is legitimate.

2000-02-09  Philip Blundell  <pb@futuretv.com>

        * config/arm/arm.c (legitimize_pic_address): Handle LABEL_REF
        correctly.

        * config/arm/arm.h (LEGITIMATE_CONSTANT_P): Allow anything when
        generating PIC.
        (LEGITIMATE_PIC_OPERAND): Disallow references to labels.

2000-02-09  Zack Weinberg  <zack@wolery.cumb.org>

        * cpplib.c (cpp_define, cpp_undef): Make sure the stacked buffer
        ends with a newline and a NUL.  Don't be so clever manipulating
        strings.

Wed Feb  9 14:18:08 MET 2000  Jan Hubicka  <jh@suse.cz>

        * reload1.c (reload) Align stack frame to cfun->stack_alignment_needed,
        not to BIGGEST_ALIGNMENT.

2000-02-08  Geoff Keating  <geoffk@cygnus.com>

        * dwarf2.h (DW_CFA_GNU_negative_offset_extended): New constant.
        * dwarf2out.c (dwarf_cfi_name): Print name of new constant.
        (reg_save): Use DW_CFA_GNU_negative_offset_extended when needed.
        (output_cfi): Handle output of DW_CFA_GNU_negative_offset_extended.
        * frame.c (execute_cfa_insn): Handle
        DW_CFA_GNU_negative_offset_extended.

2000-02-08  Richard Henderson  <rth@cygnus.com>

        * flow.c (tidy_fallthru_edges): Split out from ...
        (delete_unreachable_blocks): ... here.
        (find_basic_blocks): Use it.

Tue Feb  8 15:51:50 2000  Richard Kenner  <kenner@vlsi1.ultra.nyu.edu>

        * stmt.c (expand_decl): Do set RTX_UNCHANGING_P for TREE_READONLY.

2000-02-08  Zack Weinberg  <zack@wolery.cumb.org>

        * Makefile.in (GEN_PROTOS_OBJS): Remove libcpp.a.
        (gen_protos.o): Don't depend on cpplib.h or cpphash.h.
        (fix-header.o): Don't depend on cpphash.h.

        * scan.c (hashstr): New function.
        * scan.h: Prototype it.
        * fix-header.c: Don't include cpphash.h.  Use hashstr.
        * gen-protos.c: Don't include cpphash.h or cpplib.h.  Use
        hashstr.  Report hash table statistics.  Add private
        definition of xrealloc.

2000-02-08  Kaveh R. Ghazi  <ghazi@caip.rutgers.edu>

        * i386.h (TARGET_SWITCHES): Fix typo in option name.

2000-02-08  Clinton Popetz  <cpopetz@cygnus.com>

        * function.c (thread_prologue_and_epilogue_insns): Don't replace
        jumps with returns unless they are jumps to the fallthru block.

Tue Feb  8 07:53:55 2000  Jan Hubicka  <jh@suse.cz>

        * i386.md (addqi3_cc): Fix contraints.

Tue Feb  8 01:39:45 2000  Hans-Peter Nilsson  <hp@bitrange.com>

        * function.c (emit_return_into_block): Wrap in #ifdef HAVE_return.

2000-02-07  Mark Mitchell  <mark@codesourcery.com>

        * cpplib.c (cpp_get_token): Call CPP_BUMP_LINE after reading a
        carriage return after a macro name.

2000-02-07  Fred Fish  <fnf@be.com>

        * i386/beos-elf.h: (ASM_IDENTIFY_GCC): Define to nothing
        so the gcc2_compiled symbol doesn't confuse BeOS debuggers.

2000-02-07  Zack Weinberg  <zack@wolery.cumb.org>

        * cppfiles.c (deps_output): Count spacers in deps_column.

2000-02-07  Neil Booth  <NeilB@earthling.net>

        * cppinit.c (initialize_dependency_output): If there is no
        suffix, don't try to look for known suffixes.  Use strrchr.
        (cpp_start_read): Remove duplicate initialization.

Mon Feb  7 18:36:41 MET 2000  Jan Hubicka  <jh@suse.cz>

        * calls.c (compute_argument_block_size): New argument
        preferred_stack_boundary.
        (expand_call): update cfun->preferred_stack_boundary, update call of
        compute_argument_block_size
        (emit_library_call): Increate cfun->preferred_stack_boundary
        to PREFERRED_STACK_BOUNDARY
        (emit_library_call_value): Likewise.
        * explow.c (allocate_dynamic_stack_spave): Likewise.
        * function.c (prepare_function_start): Set
        cfun->preferred_stack_boundary
        * function.h (struct function): Add preferred_stack_boundary field.
        * integrate.c (expand_inline_function): Update
        cfun->preferred_stack_boundary and cfun->stack_alignment_needed.
        (copy_rtx_and_substitute): Align frame to stack_alignment_needed only.
        * i386.c (compute_frame_size): Use cfun->preferred_stack_boundary.

2000-02-06  Zack Weinberg  <zack@wolery.cumb.org>

        * cpplib.c (my_strerror, cpp_error, cpp_error_with_line,
        cpp_error_from_errno, cpp_warning, cpp_warning_with_line,
        cpp_pedwarn, cpp_pedwarn_with_line,
        cpp_pedwarn_with_file_and_line): Move to cpperror.c.
        (cpp_print_file_and_line, v_cpp_error, v_cpp_warning,
        v_cpp_error_with_line, v_cpp_warning_with_line,
        cpp_message_from_errno, cpp_perror_with_name): Delete.

        * cpperror.c (cpp_print_containing_files): Take starting
        buffer as argument.
        (cpp_file_line_for_message): Rename to cpp_print_file_and_line.
        (v_cpp_message): Now called directly by all entry points.
        Remove -1 case.
        (cpp_pfatal_with_name, cpp_message): Delete.
        (cpp_notice_from_errno, cpp_ice): New functions.
        (cpp_notice): Is now for reporting error conditions, just
        without an associated file.
        (cpp_error, cpp_error_with_line): Don't do anything if
        opts->inhibit_errors is on.
        (cpp_pedwarn_with_file_and_line): Take column argument also.

        * cpplib.h: Update prototypes of exported functions.
        (struct cpp_options): Add inhibit_errors.

        * cppalloc.c, cppfiles.c: Use fprintf not cpp_notice for
        non-error messages.  Include intl.h.

        * cppinit.c, cppmain.c: Likewise.  Also, use
        cpp_notice_from_errno instead of cpp_perror_with_name or
        cpp_pfatal_with_name, and cpp_notice instead of cpp_message.

        * cppexp.c, cpphash.c, cppinit.c, cpplib.c: Use cpp_ice to
        report internal errors.

        * cpplib.c (do_define): Switch bcopy to memcpy.
        Give cpp_pedwarn_with_file_and_line a dummy column argument.

        * cpplib.c (copy_rest_of_line): Revert previous change: don't
        bail out early if we hit a line comment.

2000-02-06  Richard Henderson  <rth@cygnus.com>

        * flow.c (flow_delete_insn, make_edge, remove_edge): Export.
        * basic-block.h: Declare them.
        * emit-rtl.h (active_insn_p): New.
        (next_active_insn, prev_active_insn): Use it.
        * rtl.h: Declare it.
        * function.c (emit_return_into_block): New.
        (thread_prologue_and_epilogue_insns): Insert return insns instead
        of epilogues when possible.
        * jump.c (jump_optimize_1): Remove code to insert a return insn
        on the fallthru to the exit block.

        * i386.c (ix86_can_use_return_insn_p): Fail for large poped args
        and for non-empty stack frames.
        * i386.md (return): Expand to return-pop as needed.

2000-02-06  Richard Henderson  <rth@cygnus.com>

        * simplify-rtx.c (simplify_relational_operation): Canonicalize
        constant to op1 for testing.

2000-02-06  Michael Hayes  <m.hayes@elec.canterbury.ac.nz>

        * config/c4x/c4x.md (*ldi_on_overflow): New pattern.
        (fixuns_truncqfqi2): Use it.

2000-02-06  Richard Henderson  <rth@cygnus.com>

        * i386.c (ix86_agi_dependant): Handle pro_epilogue_adjust_stack
        as a TYPE_LEA insn.

        * i386.md (widening and peepholes): Mask the constant instead of
        using gen_lowpart.

2000-02-05  Zack Weinberg  <zack@wolery.cumb.org>

        * cppfiles.c (read_and_prescan) [case SPECCASE_QUESTION]: Bump
        input pointer before possibly branching off to the backslash
        code.
        * cpphash.c (macroexpand): Correctly delete \r escapes when
        stringifying parameters.
        * cpplib.c (copy_rest_of_line): Go directly to skip_block_comment
        if we can; bail out early if we hit a line comment.
        (handle_directive): Treat '# 123' in an .S file just like
        '# <punctuation>'.  Discard the shifted '#' if we hit '#\n'.
        Return 1 for '# not_a_directive'.
        (get_directive_token): Pop macro buffers here, so that
        cpp_get_token can't sneakily move past a newline.
        Add sanity checks.
        (cpp_get_token): goto randomchar if handle_directive returns 0.

        * cppalloc.c: Update copyright.
        * cpplib.c: Merge all the static function prototypes into one
        block.
        * cpplib.h: Remove #if 0 block.

        * cpperror.c: Remove #ifdef EMACS block.
        * cppmain.c: Likewise.
        * cpphash.c: Remove #if 0 blocks.
        * cppinit.c: Remove #if 0 blocks, and the -lint option.
        * cpplib.c: Remove #if 0 blocks and code referencing
        pcp_inside_if or for_lint.  Remove duplicate error message.
        Fix error messages for #else after #else or #elif.  Reformat.
        Remove archaic TODO list.
        * cpplib.h: Remove pcp_inside_if and for_lint flags.

2000-02-05  Zack Weinberg  <zack@wolery.cumb.org>

        * i386/osf1elf.h: Add missing backslash to multiline string.

2000-02-05  Kaveh R. Ghazi  <ghazi@caip.rutgers.edu>

        * longlong.h [sparc] (udiv_qrnnd): Avoid stringifying macro arg.

2000-02-05  Kaveh R. Ghazi  <ghazi@caip.rutgers.edu>

        * Makefile.in (c-common.o): Depend on $(EXPR_H).

        * c-common.c: Include expr.h.

        * c-pragma.c (mark_align_stack): Add prototype.

        * caller-save.c (add_stored_regs): Likewise.

        * combine.c (record_promoted_value): Likewise.

        * i386.c (ix86_sched_reorder_pentium, ix86_sched_reorder_ppro):
        Likewise.

        * cppinit.c (new_pending_define): Likewise.

        * cpplib.c (skip_block_comment, skip_line_comment): Likewise.

        * dwarf2out.c (save_rtx, splice_child_die, reverse_die_lists,
        AT_class, AT_flag, AT_int, AT_unsigned, AT_string, AT_ref, AT_loc,
        AT_addr, AT_lbl, get_AT_ref, free_AT, free_die, local_scope_p,
        class_scope_p): Likewise.

        * dwarf2out.h (dwarf2out_set_demangle_name_func,
        dwarf2out_add_library_unit_info): Likewise.

        * ggc.h (ggc_page_print_statistics): Likewise.

        * haifa-sched.c (propagate_deps): Likewise.

        * reg-stack.c (next_flags_user, record_label_references): Likewise.

        * rtl.h (set_stack_check_libfunc): Likewise.

        * toplev.h (set_fatal_function): Likewise.

        * toplev.c (set_fatal_function): Delete prototype.

        * diagnostic.c: Deconstify functions returning malloc'ed ptrs.

2000-02-05  Geoff Keating  <geoffk@cygnus.com>

        * ginclude/ppc-asm.h (FUNC_START): Use USER_LABEL_PREFIX.
        (FUNC_END): Likewise.

2000-02-05  Michael Hayes  <m.hayes@elec.canterbury.ac.nz>

        * caller-save.c: Include tm_p.h.

2000-02-05  Michael Hayes  <m.hayes@elec.canterbury.ac.nz>

        * Makefile.in (libgcc.a): Add $(LIBGCC1) to libgcc.a after $(LIBGCC2).

2000-02-04  Neil Booth  <NeilB@earthling.net>

        * cccp.c (main): Check 'dir' for a NULL pointer before passing
        it to strcmp.

2000-02-04  Zack Weinberg  <zack@wolery.cumb.org>

        * recog.h: Remove NO_MD_PROTOTYPES ifdefs.
        * genflags.c: Use the max_operand_1 logic from genemit.c to
        calculate how many arguments gen_insn prototypes have.  Remove
        NO_MD_PROTOTYPES ifdefs from the generated file.
        * genoutput.c: Don't define NO_MD_PROTOTYPES in the generated
        file.  Cast gen_insn initializers to insn_gen_fn.
        * config/alpha/vms.h: Don't define NO_MD_PROTOTYPES.
        * gcc.texi: Remove documentation of NO_MD_PROTOTYPES.

2000-02-04  Kaveh R. Ghazi  <ghazi@caip.rutgers.edu>

        * fixinc/Makefile.in (HDR): Add machname.h.
        (clean): Likewise.

2000-02-05  Michael Hayes  <m.hayes@elec.canterbury.ac.nz>

        * config/c4x/c4x.h (c4x_compare_op0, c4x_compare_op1): Move ...
        (c4x_regclass_map, c4x_caller_save_map, c4x_rpts_cycles): Ditto.
        (c4x_cpu_version): Ditto.
        * config/c4x/c4x-protos.h: ... here.

2000-02-04  Jason Merrill  <jason@casey.cygnus.com>

        * dwarf2out.c (add_abstract_origin_attribute): Don't call
        gen_abstract_function on our context if we're a nested function.

2000-02-05  Michael Hayes  <m.hayes@elec.canterbury.ac.nz>

        * config/c4x/c4x.md (fixuns_truncqfqi2): Rewrite.
        * config/c4x/libgcc.S (ufix_truncqfhi2n): Fix.

2000-02-04  Bruce Korb  <bkorb@gnu.org>

        * fixinc/genfixes(machname.h):
        Move the functionality from gen-machine.h into this file.
        UNdef MN_NAME_PAT if there are no names to change.
        Also, be a little kinder when AutoGen is not present.

        * fixinc/Makefile.in(machname.h):
        Change the generation rule to use genfixes.

        * fixinc/fixfixes.c(machine_name):
        machine_name_fix's functionality now dependent upon whether
        MN_NAME_PAT is defined.

        * fixinc/fixtests.c(machine_name):
        ditto.

        * fixinc/fixlib.c(mn_get_regexps): conditional on definition
        of MN_NAME_PAT.

        * fixinc/fixlib.h(mn_get_regexps):
        ditto

        * fixinc/gen-machine.h: DELETED

2000-02-04  Jan Hubicka  <jh@suse.cz>
            Richard Henderson  <rth@cygnus.com>

        * i386.c (SAVE_REGS_FIRST): Remove.
        (ix86_initial_elimination_offset): Handle only SAVE_REGS_FIRST mode.
        (ix86_compute_frame_size): Likewise.
        (ix86_expand_prologue): Likewise.  Use pro_epilogue_adjust_stack.
        (ix86_emit_restore_regs): Remove.
        (ix86_emit_epilogue_esp_adjustment): Use pro_epilogue_adjust_stack
        when a frame pointer is in use.
        (ix86_expand_epilogue): Handle only SAVE_REGS_FIRST mode.  Use mov
        instead of pop to restore a register when profitable; emit leave
        when profitable.
        (ix86_attr_length_default): Handle pro_epilogue_adjust_stack
        as a TYPE_LEA insn.
        (ix86_adjust_cost): Handle pro_epilogue_adjust_stack as TYPE_ALU.
        * i386.md (prologue_allocate_stack): Remove.
        (epilogue_deallocate_stack): Remove.
        (pro_epilogue_adjust_stack): New.

2000-02-04  Richard Henderson  <rth@cygnus.com>

        * function.c (diddle_return_value): Rework to use a callback function.
        Use current_function_return_rtx if it's been set up.
        (do_clobber_return_reg, clobber_return_register): New.
        (do_use_return_reg, use_return_register): New.
        (expand_function_end): Use them.
        * stmt.c (expand_null_return): Likewise.
        * function.h: Declare them.
        * flow.c (mark_regs_live_at_end): Use diddle_return_value.
        (mark_reg): Change arguments as appropriate for callback.
        * integrate.c (expand_inline_function): Revert 19 Jan change.

Fri Feb  4 20:25:42 2000  Hans-Peter Nilsson  <hp@bitrange.com>

        * tm.texi (Values in Registers): Fix typo: "fo" "for".
        (Misc): Say the scheduler, not the Haifa scheduler.

2000-02-04  Clinton Popetz  <cpopetz@cygnus.com>

        * jump.c (mark_jump_label): Add in_mem param, check SYMBOL_REFs
        when in_mem is set.  Update all callers.

2000-02-04  Richard Henderson  <rth@cygnus.com>

        * i386/openbsd.h (INT_ASM_OP): Define.

Fri Feb  4 10:51:30 2000  Hans-Peter Nilsson  <hp@bitrange.com>

        * tm.texi: Fix various typos.

Thu Feb  3 17:17:32 2000  Steve Ellcey <sje@cup.hp.com>

        * config/pa/pa-hpux11.h (LIB_SPEC): Correct typo in !p case.
        (MD_STARTFILE_PREFIX_1): New macro.

Thu Feb  3 15:08:13 MET 2000  Jan Hubicka  <jh@suse.cz>

        * i386.md (movstrsi, clrstrsi): Support variable sized copies, align
        destination when needed.
        (strmovsi, strsetsi): New expander.
        (strmovsi_1, strsetsi_1): New pattern.
        * i386.h (MASK_NO_ALIGN_STROP, MASK_INLINE_ALL_STROP,
        TARGET_ALIGN_STRINGOPS, TARGET_INLINE_ALL_STRINGOPS): New macros.
        (TARGET_SWITCHES) Add align-stringops and inline-all-stringops.
        * invoke.texi (align-stringops, inline-all-stringops): Document.

Wed Feb  2 23:04:47 2000   Krister Walfridsson <cato@df.lth.se>

        * i386/netbsd.h (INT_ASM_OP): Define.

2000-02-02  Zack Weinberg  <zack@wolery.cumb.org>

        * cpplib.h (cpp_reader): Add new flag, no_directives.
        * cpphash.c (macarg): Set it.
        * cpplib.c (handle_directive): If no_directives is on and we
        find a directive, issue an error and discard the line.

Wed Feb  2 13:07:10 2000  Jim Wilson  <wilson@cygnus.com>

        * config/sparc/sparc.h (PREFERRED_RELOAD_CLASS): Delete 'E' check for
        FP constants.  Add ! TARGET_FPU check for FP constants.

2000-02-02  Clinton Popetz  <cpopetz@cygnus.com>

        * flow.c (find_basic_blocks): Don't kill label_value_list
        here.
        (cleanup_cfg): Kill it here.

Wed Feb  2 08:12:30 2000  Richard Kenner  <kenner@vlsi1.ultra.nyu.edu>

        * expr.c (store_field): Ensure ALIGN is no stricter than the
        alignment of EXP.

2000-02-02  Richard Henderson  <rth@cygnus.com>

        * jump.c (delete_insn): Partially revert 19 Jan change;
        don't convert unused code labels to notes at -O0.

2000-02-02 Herman A.J. ten Brugge <Haj.Ten.Brugge@net.HCC.nl>

        * toplev.c (rest_of_compilation): Run rebuild_jump_labels after
        split_all_insns to recreate REG_LABEL notes for flow2 pass.

2000-02-01  Richard Henderson  <rth@cygnus.com>

        * i386.c (general_no_elim_operand): New.
        (nonmemory_no_elim_operand): New.
        (ix86_expand_move): Copy eliminable operands before a push.
        * i386-protos.h: Declare new functions.
        * i386.h (CAN_ELIMINATE): Simplify.
        (PREDICATE_CODES): Update.
        * i386.md (push insns): Don't allow eliminable register operands.

2000-02-01  Richard Henderson  <rth@cygnus.com>

        * flow.c (mark_regs_live_at_end): Follow expand_function_end and
        replace BLKmode with DECL_RTL's mode.

2000-02-01  Zack Weinberg  <zack@wolery.cumb.org>

        * frame.c (find_fde): Convert for loop to do-while so compiler
        sees it's always executed at least once.
        * libgcc2.c (BBINBUFSIZE): Kill.
        (__bb_init_prg): Use fgets.
        (__bb_exit_trace_func): Don't paste strings.
        * unroll.c (unroll_loop): Initialize unroll_type, not
        unroll_number, and tweak logic to match.

        * i386.c (ix86_expand_int_movcc): Add explicit 'return 0' in
        all failure paths.
        (ix86_flags_dependant): Likewise.  Disentangle control flow.
        (ix86_sched_reorder): Break guts out to
        ix86_sched_reorder_pentium and ix86_sched_reorder_ppro.
        (ix86_sched_reorder_ppro): Initialize pair2 and insnp before
        any possible use.

        * i386.h (MACHINE_STATE_SAVE, MACHINE_STATE_RESTORE): Don't
        use string concatenation.  Don't save and restore esi.

        * fixinc/Makefile.in (fixincl.sh): Don't depend on inclhack.def.
        (machname.h): Remove script to separate file.  Use two-step
        sequence so target is not created if script fails.
        * fixinc/gen-machname.h: New file.  Handle case where no non-reserved
        identifiers are defined.
        * fixinc/fixlib.c (mn_get_regexps): Return a flag: if MN_NAME_PAT is
        an empty string, machine_name doesn't need to do anything at
        all.
        (is_cxx_header): Add more cases to regexp.
        * fixinc/fixlib.h: Update prototype.
        * fixinc/fixtests.c, fixinc/fixfixes.c: Update callers of
        mn_get_regexps.
        * fixinc/fixincl.c: Define NO_BOGOSITY.

        * fixinc/inclhack.def (no_double_slash, else_endif_label): Ifdef out.
        (hp_sysfile): Add missing comma.
        (math_exception): Put the wrapper ifdefs at the beginning and
        the end of the file.
        * fixinc/fixincl.x, fixinc/inclhack.sh: Regenerate.

2000-02-01  Richard Henderson  <rth@cygnus.com>

        * sparc.c (fp_zero_operand): Turn into a normal predicate.
        Use CONST0_RTX.  Update all callers.
        * sparc.h, sparc-protos.h: Update accordingly.
        * sparc.md (fp mov insns): Use fp_zero_operand directly
        where applicable.

Wed Feb  2 02:59:45 2000  Hans-Peter Nilsson  <hp@bitrange.com>

        * tm.texi (Values in Registers): Fix typo in HARD_REGNO_NREGS
        example.

2000-02-01  Kaveh R. Ghazi  <ghazi@caip.rutgers.edu>

        * Makefile.in (specs.ready): New target.
        (fixinc.sh): Depend on `specs.ready' instead of `specs'.

2000-02-01  Kaveh R. Ghazi  <ghazi@caip.rutgers.edu>

        * fixinc.irix: Use unique filenames for writing into /tmp,
        * fixinc.ptx: Likewise.
        * fixinc.sco: Likewise.
        * fixinc.svr4: Likewise.
        * fixinc.winnt: Likewise.

2000-02-01  Kaveh R. Ghazi  <ghazi@caip.rutgers.edu>

        * tsystem.h: New file.

        * Makefile.in (libgcc2.a, stmp-multilib, crtbegin.o, crtend.o,
        s-crtS): Depend on tsystem.h.

        * crtstuff.c: Include tsystem.h.
        * frame.c: Likewise.
        * libgcc2.c: Likewise.

Tue Feb  1 19:53:27 CET 2000  Jan Hubicka  <jh@suse.cz>

        * builtins.c (expand_builtin_memset): Expand for variable sized
        lengths too.

2000-02-01  David Billinghurst <David.Billinghurst@riotinto.com.au>

        * config/mips/iris6.h (SUBTARGET_ASM_SPEC) : Default ISA based
        on ABI.

Tue Feb  1 00:57:40 2000  Hans-Peter Nilsson  <hp@bitrange.com>

        * dwarfout.c (SHORT_TYPE_SIZE): Correct default.

        * tm.texi (Type Layout): Correct entry for CHAR_TYPE_SIZE.

2000-01-31  Chandra Chavva <cchavva@cygnus.com>

        * combine.c (try_combine) [HAVE_cc0]: Trying to check the missed
        case 3->2 combining (combining with splitting) in which 2 is CC0
        setter/user and 3 is user. The rest of cases 2->1 and 3->2 are
        checked at the begining of the function with the aid of calling
        function 'can_combine_p'.

2000-01-31  Dave Brolley  <brolley@redhat.com>

        * cccp.c (struct argdata): Redeclare 'newlines' field as 'int'.

2000-01-31  Jason Merrill  <jason@casey.cygnus.com>

        * jump.c (redirect_jump): Move a NOTE_INSN_FUNCTION_END to the
        new label.

2000-01-31  Kaveh R. Ghazi  <ghazi@caip.rutgers.edu>

        * gansidecl.h (PROTO, VPROTO, PVPROTO): Delete macros.

        * sbitmap.h (sbitmap_first_set_bit, sbitmap_last_set_bit):
        PROTO -> PARAMS.

2000-01-30  Zack Weinberg  <zack@wolery.cumb.org>

        * i386/386bsd.h, i386/beos-pe.h, i386/bsd386.h, i386/crtdll.h,
        i386/cygwin.h, i386/dgux.h, i386/djgpp-rtems.h, i386/djgpp.h,
        i386/freebsd.h, i386/gnu.h, i386/i386-aout.h, i386/i386-coff.h,
        i386/i386-interix.h, i386/i386elf.h, i386/linux.h, i386/lynx-ng.h,
        i386/lynx.h, i386/mach.h, i386/mingw32.h, i386/moss.h,
        i386/netbsd.h, i386/next.h, i386/openbsd.h, i386/osf1elf.h,
        i386/ptx4-i.h, i386/rtems.h, i386/rtemself.h, i386/sco.h,
        i386/sequent.h, i386/sun.h, i386/sysv4.h, i386/uwin.h, i386/vsta.h,
        i386/vxi386.h, i386/win-nt.h, i386/win32.h:
        Remove -Di386 -Acpu(i386) -Amachine(i386) from CPP_PREDEFINES.

        * i386/osf1elf.h, i386/scodbx.h, i386/seq-sysv3.h, i386/sysv5.h:
        Add %(cpp_cpu) to CPP_SPEC.

        * i386/osf1elf.h, i386/osfelf.h, i386/osfrose.h:
        Add %(cc1_cpu) to CC1_SPEC.

2000-01-28  Ulrich Drepper  <drepper@redhat.com>

        * c-decl.c (c_decode_option): Accept optional numeric argument to
        -Wformat and set warn_format.
        * c-common.c: Don't emit warning about non-constant printf format
        string unless warn_format > 1.

2000-01-30  Richard Henderson  <rth@cygnus.com>

        * alpha.md (return_internal): Allow after reload only.

2000-01-30  Richard Henderson  <rth@cygnus.com>

        * i386.c (ix86_compute_frame_size): Omit padding1 if the
        local frame size is zero.

2000-01-30  Richard Henderson  <rth@cygnus.com>

        * alpha.c (alpha_expand_epilogue): Don't emit the return insn.
        * alpha.h (EPILOGUE_USES): New.  Mark $26 live.
        * alpha.md (return): Turn into an expander.
        (return_internal): Don't use $26.
        (epilogue): Emit the return insn.

2000-01-30  Richard Henderson  <rth@cygnus.com>

        * alpha.md (negtf2, abstf2): Fix word order thinko.
        (extendsftf2): New.
        (trunctfsf2): Avoid intermediate rounding errors.

2000-01-30  Zack Weinberg  <zack@wolery.cumb.org>

        * cppfiles.c (find_position): Drop 'colp' argument, return the
        new line base.
        (read_and_prescan): Adjust to match.  Don't ever manipulate
        line or line_base except via find_position.

2000-01-29  Zack Weinberg  <zack@wolery.cumb.org>

        * c-parse.in: Apply Ulrich's changes from c-parse.y.
        * c-parse.y, objc/objc-parse.y, c-parse.c, objc/objc-parse.c:
        Regenerate.

2000-01-29  Zack Weinberg  <zack@wolery.cumb.org>

        * cpperror.c (cpp_file_line_for_message): If 'line' is zero,
        just print "<command line>".  If 'filename' is null or an
        empty string, print "<stdin>" for the filename.
        * cpplib.c (do_define): Don't print the 'location of the
        previous definition' message if we're still parsing the
        command line.
        (cpp_pedwarn_with_file_and_line): Always call
        cpp_file_line_for_message.

2000-01-29  Mark Mitchell  <mark@codesourcery.com>

        * flow.c (mark_regs_live_at_end): Fix typo.

2000-01-28  Ulrich Drepper  <drepper@redhat.com>

        * c-common.c: Adjust variable names, comments, help strings to c99.
        * c-lex.c: Likewise.
        * c-parse.y: Likewise.
        * c-tree.h: Likewise.
        * cccp.c: Likewise.
        * cpplib.h: Likewise.
        * c-decl.c: Likewise.  Recognize options with names "*99" as well.
        * cppinit.c: Likewise.

2000-01-29 Herman A.J. ten Brugge <Haj.Ten.Brugge@net.HCC.nl>

        * c4x.h (INIT_TARGET_OPTABS): Add all missing local optab entries.
        * c4x.c: Define the optab rtx values.
        (c4x_add_gc_roots): Add the ggc roots for these optab rtx values.
        (c4x_emit_libcall): Use new optab rtx values.
        (c4x_emit_libcall3): Likewise.
        (c4x_emit_libcall_mulhi): Likewise.
        * c4x-protos.h: Add prototypes for optab rtx values and change
        prototypes for above c4x_emit_libcall functions.

2000-01-29 Herman A.J. ten Brugge <Haj.Ten.Brugge@net.HCC.nl>

        * c4x.c (c4x_output_ascii): Restrict line length of output when TI
        syntax is used.
        (c4x_function_prologue): Use regnames intead of float_reg_names when
        TI syntax is used.
        (c4x_function_epilogue): Likewise.
        (c4x_print_operand): Likewise.
        * c4x.h (HOST_WIDE_INT_PRINT_HEX): Redefine.
        * c4x.md (set_high): Disable for TARGET_TI.

2000-01-29 Herman A.J. ten Brugge <Haj.Ten.Brugge@net.HCC.nl>

        * c4x.h (PREFERRED_RELOAD_CLASS): Change to restrict the reloading
        of framepointer + constant to ADDR_REGS class.
        * c4x.md (addqi3, addqi3_noclobber_reload): Update.
        * c4x.c (std_or_reg_operand): New function.
        * c4x-protos.h (std_or_reg_operand): Prototype it.

2000-01-29 Herman A.J. ten Brugge <Haj.Ten.Brugge@net.HCC.nl>

        * t-c4x: Change qi,qf,di,df into si,sf,hi,hf to generate same
                object names as libgcc2.c.
        * libgcc.S: Use newly defined names.

Fri Jan  7 19:48:04 CET 2000  Jan Hubicka  <jh@suse.cz>
        * sbitmap.c (sbitmap_first_set_bit, sbitmap_last_set_bit): New
        function.
        * sbitmap.h (sbitmap_first_set_bit, sbitmap_last_set_bit): Declare.
        * basic_block.h (FLOW_LOOP_FIRST_BLOCK): New macro.
        (FLOW_LOOP_LAST_BLOCK): Likewise.

2000-01-21  Michael Hayes  <m.hayes@elec.canterbury.ac.nz>

        * basic-block.h (struct loop): New fields 'first' and 'last'.
        * flow.c (flow_loops_find): Compute loop->first and loop->last.
        (flow_loops_dump): Use loop->first to check for NOTE_INSN_LOOP_BEG
        and loop->last to check for NOTE_INSN_LOOP_END.

Fri Jan 28 10:57:58 2000  Jason Eckhardt  <jle@cygnus.com>

        * predict.c (estimate_probability): Use the new FIRST and LAST fields
        of the loop descriptor rather than HEADER and LATCH. Also added
        missing break statements as well making some coding style modifications
        as suggested by Michael Hayes.

2000-01-28  Richard Henderson  <rth@cygnus.com>

        * flow.c (find_basic_blocks): Remove do_cleanup argument.
        Break out that code ...
        (cleanup_cfg): ... here.
        (commit_one_edge_insertion): Detect a return instruction being
        emitted to an edge.  Emit a barrier following; clear fallthru.
        (commit_edge_insertions): Verify CFG consistency.
        * function.c (expand_function_start): Kill unused variable.
        (expand_function_end): Likewise.
        (thread_prologue_and_epilogue_insns): Use insert_insn_on_edge
        to insert the epilogue.

        * gcse.c (gcse_main): Adjust for find_basic_blocks change.
        (delete_null_pointer_checks): Likewise.
        * output.h: Likewise.
        * reg-stack.c (reg_to_stack): Likewise.
        * toplev.c (rest_of_compilation): Likewise.  Run
        thread_prologue_and_epilogue_insns after rebuilding the CFG.

2000-01-28  Richard Henderson  <rth@cygnus.com>

        * Makefile.in (flow.o): Revert 24 Jan change.
        * flow.c (mark_regs_live_at_end): Likewise.  Force BLKmode
        FUNCTION_VALUE result to DECL_RESULT's mode.

        * haifa-sched.c (schedule_insns): Don't recompute reg info
        after reload.

2000-01-28  Zack Weinberg  <zack@wolery.cumb.org>

        * configure.in: Make --enable-cpplib the default.
        * configure: Regenerate.
        * gcc.dg/990119-1.c: No longer expected to fail.

2000-01-28  Bernd Schmidt  <bernds@cygnus.co.uk>

        * jump.c (jump_optimize_1): Delete an optimization that is also done
        by merge_blocks in flow.

2000-01-28  Kaveh R. Ghazi  <ghazi@caip.rutgers.edu>

        * diagnostic.c (build_message_string, output_printf,
        line_wrapper_printf): Add ATTRIBUTE_PRINTF_*.
        (build_location_prefix): Fix non-literal format string.

2000-01-27  Richard Henderson  <rth@cygnus.com>

        * alpha.md (trunctfsf2): New.

2000-01-27  Andrew Hobson  <ahobson@eng.mindspring.net>

        * configure.in (alpha-dec-osf5): Enable MASK_SUPPORT_ARCH.

2000-01-27  Zack Weinberg  <zack@wolery.cumb.org>

        * cppinit.c (cpp_handle_option): Recognize C++ comments under
        -std=gnu89.
        * cpplib.c (skip_block_comment, skip_line_comment): Split code
        out of...
        (skip_comment) ... here.  Permit C++ comments in system
        headers always.  Warn about C++ comments in user code under
        -std=gnu89 -pedantic.
        (copy_comment): Use skip_comment.
        (cpp_skip_hspace, cpp_get_token): skip_comment can no longer
        return EOF.
        (consider_directive_while_skipping, do_else, do_endif): Call
        validate_else unconditionally.
        (validate_else): Check CPP_PEDANTIC here.  Accept non-comment
        text after the conditional in a system header.
        * cpplib.h (struct cpp_buffer): Add flag
        warned_cplusplus_comments.

2000-01-27  Geoffrey Keating  <geoffk@cygnus.com>

        * emit-rtl.c (unshare_all_rtl): Unshare virtual parameters too.
        Use unshare_all_rtl_1.
        (unshare_all_rtl_again): New function.
        (unshare_all_rtl_1): New function split out of unshare_all_rtl.

        * function.c (purge_addressof_1): Use unshare_all_rtl_again
        rather than resetting the 'used' flags ourself.

        * toplev.c (rest_of_compilation): Add current_function_decl
        to the unshare_all_rtl call.
        * tree.h: Prototype unshare_all_rtl.
        * rtl.h: Prototype unshare_all_rtl_again here.

2000-01-27  Geoffrey Keating  <geoffk@cygnus.com>

        * genoutput.c (output_prologue): Include ggc.h in generated
        files.
        * Makefile.in (insn-output.o): Depends on ggc.h.

2000-01-27  Ian Dall  <ian@sibyl.beware.dropbear.id.au>
            Hans-Peter Nilsson  <hp@bitrange.com>

        * ns32k/xm-ns32k.h (memcpy, memset, memcmp): Delete.
        Remove redundant include of xm-ns32k.h.
        * ns32k/xm-genix.h (memcpy, memset, memcmp): Add definitions.
        Remove redundant include of xm-ns32k.h.
        * ns32k/xm-netbsd.h (memcpy, memset, memcmp): No longer undefine.
        Remove redundant include of xm-ns32k.h.
        * ns32k/netbsd.h (TARGET_DEFAULT): Enable multiply-add instructions.

        * ns32k/ns32k.h: Update comment on multiply-add instructions.
        (TARGET_SWITCHES): Add documentation strings.
        (DWARF_FRAME_REGNUM): Override default definition.
        (REG_CLASS_CONTENTS): Add comments.
        (SUBSET_P): Format to reduce line length.
        (SMALL_REGISTER_CLASSES): Make a run time option.
        (GO_IF_NONINDEXED_ADDRESS): Reformat.
        (GO_IF_LEGITIMATE_ADDRESS): Ensure that cfun is non NULL before
        dereferencing it.  Braces to avoid "ambiguous else" were misplaced.
        (regclass_map): fix typo in comment.
        * ns32k/ns32k.c: Add spaces before parentheses for consistant style.
        Prefer gen_rtx_FOO(...) to gen_rtx(FOO,...).
        (trace, reg_or_mem_operand): Delete, unused function.
        (calc_address_cost): Small offsets are cheaper than large ones.
        (expand_block_move): Generate more efficient code when bytes is a
        known at compile time.
        * ns32k/ns32k.md: Alternate constraints for multiply-add instructions.
        (udivmodsi4, udivmodhi4, udivmodqi4): Use nonimmediate_operand
        instead of reg_or_mem_operand.

        * ns32k/ns32k.md: Use nonimmediate_operand or stricter for outputs,
        not general_operand.  Similarly use "=rm" or stricter, not "=g".
        For input operands, use stricter constraints than "g" if not
        general_operand.  Similarly use stricter predicate than
        "general_operand" when stricter constraints than "g" are present,
        except for matching constraints.
        (movstrsi): Use "memory_operand" for operands 0 and 1.
        (truncsiqi2, truncsihi2, trunchiqi2): Remove.
        (udivmoddisi4_internal): Use nonimmediate_operand for operand 0,
        not reg_or_mem_operand.
        (udivmoddisi4): Ditto.
        Use nonimmediate_operand for operand 1, not reg_or_mem_operand.
        Use nonimmediate_operand for operand 3, not register_operand.
        (udivmoddiqi4_internal): Use register_operand for operand 1, not
        reg_or_mem_operand.

2000-01-27  Fred Fish  <fnf@be.com>

        * gthr-posix.h: Fix typo; compatibily -> compatibility.
        * gthr-single.h: Likewise.
        * gthr-solaris.h: Likewise.
        * gthr-vxworks.h: Likewise.
        * gthr-win32.h: Likewise.
        * gthr.h: Likewise.

2000-01-27  Zack Weinberg  <zack@wolery.cumb.org>

        * cppinit.c: Add " (cpplib)" to end of string printed by
        -v / --version.

2000-01-27  Richard Henderson  <rth@cygnus.com>

        * alpha.c (alpha_emit_conditional_move): Use VOIDmode when
        testing for a signed comparison.
        (alpha_emit_floatuns): New.
        * alpha-protos.h: Declare it.
        * alpha.md (floatunsdisf2, floatunsdidf2): New.
        (extendsfdf2): Tidy.

2000-01-27  Jakub Jelinek  <jakub@redhat.com>

        * config/sparc/linux64.h (CC1_SPEC): If compiling -m32 with -g but
        no -g option specifying debugging format, default to -gstabs+.

Wed Jan 26 22:19:14 1999  J"orn Rennecke  <amylaar@cygnus.co.uk>

        * calls.c (special_function_p): New argument fork_or_exec.
        (expand_call): When profile_arc_flag is set and the function
        is in the fork_or_exec group, call __bb_fork_func first.
        * libgcc2.c, _bb module (__bb_fork_func): New function.
        (__bb_exit_func): If fcntl F_SETLKW is available, use it to lock
        output file.
        * config/svr4.h (TARGET_HAS_F_SETLKW): Define.
        * tree.h (special_function_p): Update prototype.

2000-01-26  Richard Henderson  <rth@cygnus.com>

        * alpha.c (alpha_split_tfmode_pair): New.
        * alpha-protos.h: Declare it.
        * alpha.md (abstf2, negtf2): New.
        (movtf insn): Add input G constraint.
        (movtf splitter): Use alpha_split_tfmode_pair.

2000-01-26  Kaveh R. Ghazi  <ghazi@caip.rutgers.edu>

        * i386/cygwin.h: PROTO -> PARAMS.

2000-01-26  Jakub Jelinek  <jakub@redhat.com>

        * config/sparc/sparc.c (sparc_emit_float_lib_cmp): Handle
        TARGET_ARCH32 again. Handle ORDERED, UN* and LTGT comparisons
        using _Qp_cmp/_Q_cmp and testing the return value.
        (print_operand): Call reverse_condition_maybe_unordered if
        we are handling CCFPmode or CCFPEmode.
        Handle ORDERED, UN* and LTGT comparisons.
        * config/sparc/sparc.md (cmptf): Use even on TARGET_ARCH32
        if not TARGET_HARD_QUAD.
        (seq, sne, sgt, slt, sge, sle, beq, bne, bgt, blt, bge, ble,
        bunordered, bordered, bungt, bunlt, buneq, bunge, bunle, bltgt):
        Call sparc_emit_float_lib_cmp even on TARGET_ARCH32.
        Adjust gen_b* calls so that they reflect return comparison of
        sparc_emit_float_lib_cmp.

2000-01-26  Alexandre Oliva  <oliva@lsd.ic.unicamp.br>

        * config/alpha/alpha.c (alpha_emit_xfloating_cvt): Do not assume
        incoming operands array is large enough for one more operand.
        (alpha_emit_xfloating_arith): Likewise.

2000-01-25  Zack Weinberg  <zack@wolery.cumb.org>

        * fixinc/Makefile.in (machname.h): SunOS 4 sed can't handle a
        file with one line and no trailing newline.
        Patch by Kaveh Ghazi <ghazi@caip.rutgers.edu>.
        * fixinc/fixtests.c (machine_name_test): Fix fencepost error
        checking if the match is on the line.
        * fixinc/gnu-regex.c: Provide regerror not __regerror.

2000-01-25  Richard Henderson  <rth@cygnus.com>

        * sparc.c (output_cbranch): Fix accidental squashing of the
        fp branch pre-delay nop.

2000-01-25  Richard Henderson  <rth@cygnus.com>

        * tree.def (UNNE_EXPR): Remove.
        * c-typeck.c (build_binary_op): Don't handle it.
        * expr.c (expand_expr, do_jump, do_store_flag): Likewise.

        * rtl.def (UNNE): Remove.
        (LTGT): Add.
        * jump.c (reverse_condition): Update accordingly.
        (swap_condition): Likewise.
        (comparison_dominates_p): Handle unordered comparisons.
        (reverse_condition_maybe_unordered): New.
        * rtl.h (reverse_condition_maybe_unordered): Declare.

        * sparc.c (select_cc_mode): Update for UNNE/LTGT.
        (output_cbranch): Use reverse_condition_maybe_unordered and LTGT.
        * sparc.h (REVERSIBLE_CC_MODE): Always true.  Update docs.
        * sparc.md (bltgt): New.

2000-01-25  Nick Clifton  <nickc@redhat.com>

        * emit-rtl.c (emit_insn): Only check machine class insns for
        improper emission of a RETURN.

2000-01-25  Richard Henderson  <rth@cygnus.com>

        * Makefile.in (flow.o): Depend on $(EXPR_H).
        * flow.c (mark_regs_live_at_end): Use hard_function_value, i.e.
        duplicate the structure of diddle_return_value for keeping regs live.

2000-01-26  Michael Hayes  <m.hayes@elec.canterbury.ac.nz>

        * loop.c (current_loop_info): Delete.
        (consec_sets_invariant_p): Add loop argument, update callers.
        (get_condition_for_loop): Likewise.
        (count_nonfixed_reads, update_giv_derive): Likewise.
        (simplify_giv_expr, general_induction_var): Likewise.
        (consec_sets_giv, recombine_givs): Likewise.
        (move_movables): Delete loop_start and loop_end arguments,
        add loop argument, and update callers.
        (find_mem_givs, check_final_value): Likewise.
        (record_giv, maybe_eliminate_biv, maybe_eliminate_biv_1): Likewise.
        (loop_invariant_p): Rename from invariant_p, add loop argument, and
        update callers.
        (basic_induction_var): Add loop argument, delete loop_level argument,
        and update callers.
        * unroll.c (iteration_info): Delete loop_start and loop_end arguments,
        add loop argument, and update callers.
        (find_splittable_regs, find_splittable_givs): Likewise.
        (reg_dead_after_loop, loop_find_equiv_value): Likewise.
        (final_biv_value, final_giv_value, back_branch_in_range_p): Likewise.
        (biv_total_increment): Delete loop_start and loop_end arguments;
        update callers.
        (precondition_loop_p): Delete loop_start and loop_info arguments;
        update callers.
        * loop.h (get_condition_for_loop): Add loop argument.
        (biv_total_increment): Delete loop_start and loop_end arguments.
        (precondition_loop_p): Delete loop_start and loop_info arguments;
        add loop argument.
        (final_biv_value): Delete loop_start and loop_end arguments;
        add loop argument.
        (final_giv_value, back_branch_in_range_p): Likewise.

2000-01-25  Gavin Romig-Koch  <gavin@cygnus.com>

        * config/mips/mips.h (LEGITIMATE_CONSTANT_P): Fix for mips16.

2000-01-25  Gavin Romig-Koch  <gavin@cygnus.com>

        * Makefile.in (c-gperf.h) : Change the "See" pointer to
        point to the new "generated_files" doc.

2000-01-25  Clinton Popetz  <cpopetz@cygnus.com>

        * config/fp-bit.c (_unord_f2): Fix typo.

2000-01-25  Zack Weinberg  <zack@wolery.cumb.org>

        * c-common.c, c-decl.c, c-lang.c, c-lex.c, c-parse.in, c-pragma.c,
        c-typeck.c, objc/objc-act.c: Remove all references to obstack
        functions obsoleted by GC, such as push_obstacks_nochange,
        end_temporary_allocation, savealloc, saveable_tree_cons, etc.
        and code which existed only to decide whether or not to call
        them.  Remove now-unused NESTED argument from start_function;
        all callers changed.  Do not change behavior based on ggc_p.
        The use of the ixp_obstack in c-iterate.c and the util_obstack
        in objc/objc-act.c remain; these are not obsoleted by garbage
        collection.
        * c-tree.h: Update prototype for start_function.

        * c-parse.y, c-parse.c, objc/objc-parse.c, objc/objc-parse.y: Rebuild.

2000-01-25  Clinton Popetz  <cpopetz@cygnus.com>

        * config/mips/mips.md (zero_extendsidi2_internal): Disable for
        mips16.

2000-01-25  Richard Henderson  <rth@cygnus.com>

        * sparc-protos.h (select_cc_mode): Declare.
        * sparc.c (select_cc_mode): New.  Handle unordered compares.
        (output_cbranch): Always reverse via code change.  Handle
        unordered compares.  Factor tests and string updates.
        * sparc.h (SELECT_CC_MODE): Split out to select_cc_mode.
        (REVERSIBLE_CC_MODE): Also exclude CCFPmode.
        * sparc.md (bunordered, bordered): New.
        (bungt, bunlt, buneq, bunge, bunle): New.

2000-01-25  Richard Henderson  <rth@cygnus.com>

        * dwarf2out.c (dwarf2out_init): Use ggc_add_rtx_varray_root.
        * ggc-common.c (ggc_add_rtx_varray_root): New.
        (ggc_mark_rtx_varray): New.
        (ggc_mark_rtx_varray_ptr): New.  Shift all ggc_mark_foo_ptr
        functions down below ggc_mark_foo.
        * ggc.h (ggc_add_rtx_varray_root, ggc_mark_rtx_varray): Declare.

2000-01-25  Richard Henderson  <rth@cygnus.com>

        * alpha.c (secondary_reload_class): Don't allocate a secondary
        for integral mode memories into FLOAT_REGS.  Rearrange the more
        complicated memory expression inward.

2000-01-25  Zack Weinberg  <zack@wolery.cumb.org>

        * inclhack.def: Fixes to play nicer with FreeBSD, and
        corrections to comments.
        (cxx_unready): Add select expression.
        (irix_sockaddr): Add bypass expression.
        (machine_ansi_h_va_list): New fix.
        (stdio_va_list): No need to edit _BSD_VA_LIST_.
        Split out addition of "#include <stdarg.h>" to...
        (stdio_stdarg_h): ... here.
        (systypes_for_aix): Rename to systypes_stdlib_size_t.  Apply
        to stdlib.h also.  Do not munge _BSD_SIZE_T_.
        (sysz_stdlib_for_sun): Delete duplicate fix for unprotected
        size_t.
        (ultrix_ifdef): Tighten up select expression.

        * fixincl.tpl: Exorcise 'exesel'.  Rewrite calculations of
        re_ct and max_mach to avoid use of shell.  Make printed names
        match names in inclhack.def.  Use static copyright date.
        Don't count c_test and test expressions as requiring regex_t
        slots.  Add some commentary.
        * inclhack.tpl: Do not include the 'This script contains N
        fixup scripts' line if PROGRAM is defined.  Use static
        copyright date.

2000-01-24  Jason Merrill  <jason@casey.cygnus.com>

        * dwarf2out.c: include "varray.h", not dyn-string.h.
        (ASM_OUTPUT_DWARF2_ADDR_CONST, ASM_NAME_TO_STRING): Lose.
        (addr_const_to_string, addr_to_string): Lose.
        (ASM_OUTPUT_DWARF_ADDR_CONST): Copy from dwarfout.c.
        (struct dw_val_struct): val_addr is now an rtx.
        (add_AT_addr, AT_addr, free_AT, output_aranges): Adjust.
        (used_rtx_varray): New varray.
        (dwarf2out_init): Initialize it.
        (save_rtx): New fn.
        (mem_loc_descriptor, add_const_value_attribute): Call it instead of
        addr_to_string.
        * arm/telf.h, arm/unknown-elf.h, mn10200.h, mn10300.h,
        sparc/sp64-elf.h: Remove definition of ASM_OUTPUT_DWARF2_ADDR_CONST.
        * Makefile.in (dwarf2out.o): Update dependencies.

2000-01-24  Richard Henderson  <rth@cygnus.com>

        * i386.c (i386_dwarf_output_addr_const): New.
        * i386.h (ASM_OUTPUT_DWARF_ADDR_CONST): New.

        * dwarf2out.c (mem_loc_descriptor): Call ASM_SIMPLIFY_DWARF_ADDR
        if defined.
        * dwarfout.c (output_mem_loc_descriptor): Likewise.
        * i386.c (i386_simplify_dwarf_addr): New.
        * i386.h (ASM_SIMPLIFY_DWARF_ADDR): New.

Mon Jan 24 16:56:10 2000  Jim Wilson  <wilson@cygnus.com>

        * dwarf2out.c (gen_struct_or_union_type_die): Set complete if
        TYPE_STUB_DECL is NULL.

2000-01-24  Richard Henderson  <rth@cygnus.com>

        * builtins.c (expand_tree_builtin): Move ...
        * c-common.c (expand_tree_builtin): ... here.

2000-01-25  Michael Hayes  <m.hayes@elec.canterbury.ac.nz>

        * loop.h (LOOP_INFO): New accessor macro.
        * basic-block.h (struct loop): Rename field `info' to `aux'.
        * loop.c (scan_loop): Replace loop->info with LOOP_INFO (loop).
        (prescan_loop, strength_reduce, check_dbra_loop, insert_bct): Likewise.
        * unroll.c (loop_iterations, unroll_loop): Likewise.

2000-01-24  Christopher Faylor <cgf@cygnus.com>

        * config/i386/t-cygwin: Accomodate new winsup directory layout
        when searching for include files.

2000-01-24  Richard Henderson  <rth@cygnus.com>

        * rtl.def: Add unordered fp comparisions.
        * tree.def: Likewise.
        * tree.h: Add ISO C 9x unordered fp comparision builtins.

        * builtins.c (expand_tree_builtin): New function.
        * c-typeck.c (build_function_call): Use it.
        (build_binary_op): Support unordered compares.
        * c-common.c (c_common_nodes_and_builtins): Add unordered compares.

        * combine.c (known_cond): Handle reverse_condition returning UNKNOWN.
        (reversible_comparison_p): Allow UNORDERED/ORDERED to be reversed.
        * cse.c (fold_rtx): Check FLOAT_MODE_P before reversing.
        (record_jump_equiv): Handle reverse_condition returning UNKNOWN.
        * jump.c (reverse_condition): Don't abort for UNLE etc, but
        return UNKNOWN.
        (swap_condition): Handle unordered compares.
        (thread_jumps): Check can_reverse before reversing.
        * loop.c (get_condition): Likewise.  Allow UNORERED/ORDERED to be
        reversed for FP.

        * optabs.c (can_compare_p): New argument CODE.  Verify branch or
        setcc is present before acking for cmp_optab.  Update all callers.
        (prepare_float_lib_cmp, init_optabs): Handle UNORDERED.
        * expmed.c (do_cmp_and_jump): Update for can_compare_p.
        * expr.c (expand_expr): Likewise.  Support unordered compares.
        (do_jump, do_store_flag): Likewise.
        * expr.h (enum libfunc_index): Add unordered compares.

        * Makefile.in (FPBIT_FUNCS): Add _unord_sf.
        (DPBIT_FUNCS): Add _unord_df.
        * config/fp-bit.c (_unord_f2): New.
        * fp-test.c (main): Try unordered compare builtins.

        * alpha-protos.h (alpha_fp_comparison_operator): Declare.
        * alpha.c (alpha_comparison_operator): Check mode properly.
        (alpha_swapped_comparison_operator): Likewise.
        (signed_comparison_operator): Likewise.
        (alpha_fp_comparison_operator): New.
        (alpha_emit_conditional_branch): Handle unordered compares.
        * alpha.h (PREDICATE_CODES): Update.
        * alpha.md (fp compares): Use alpha_fp_comparison_operator.
        (bunordered, bordered): New.

2000-01-24  Richard Henderson  <rth@cygnus.com>

        * alpha.c (alpha_emit_xfloating_cvt): Thinko in operand manipulation.
        * alpha.md (movtf): New expander, insn, and splitter.

Mon Jan 24 19:49:47 MET 2000  Jan Hubicka  <jh@suse.cz>

        * reg-stack.c (subst_stack_regs_pat): Handle correctly USEs of
        dead registers.

Mon Jan 24 17:37:31 MET 2000  Jan Hubicka  <jh@suse.cz>

        * i386.h (FIRST_PSEUDO_REGISTER): Set to 21.
        (FIXED_REGISTERS, CALL_USED_REGISTERS,
         REG_ALLOC_ORDER): Add frame pointer
        (FRAME_POINTER_REGNUM): Set to 20
        (HARD_FRAME_POINTER_REGNUM): New macro.
        (ELIMINABLE_REGS): Eliminate ARG_POINTER and FRAME_POINTER
        to HARD_FRAME_POINTER.
        (REGNO_OK_FOR_BASE_P): Accept FRAME_POINTER_REGNUM
        (REG_OK_FOR_INDEX_NONSTRICT_P): Likewise.
        (REG_OK_FOR_BASE_NONSTRICT_P): Likewise.
        (HI_REGISTER_NAMES): Add "frame".
        (CAN_ELIMINATE): Handle FRAME_POINTER_REGNUM elimination.
        (debug_reg): Handle FRAME_POINTER_REGNUM.
        (reg_class): Add arg pointer and frame pointer to NON_Q_REGS,
        GENERAL_REGS and INDEX_REGS.
        * i386.c (SAVED_REGS_FIRST): new macro.
        (AT_BP): Use hard_frame_pointer_rtx instead of frame_pointer_rtx
        (ix86_decompose_address, memory_address_length): Likewise.
        (regclass_map): Add frame pointer.
        (call_insn_operand): Handle frame_pointer_rtx.
        (reg_no_sp_operand): Likewise.
        (ix86_decompose_address): Handle frame_pointer_rtx as stack_pointer_rtx.
        (print_operand, legitimize_pic_address): Fix formating.
        (ix86_compute_frame_size): Make static, update prototype, new
        parameters padding1, padding2, use ix86_nsaved_regs, use
        stack_alignment_needed.
        (ix86_initial_elimination_offset): Handle FRAME_POINTER_REGNUM
        to HARD_FRAME_POINTER_REGNUM conversions.
        (ix86_expand_prologue): Handle SAVED_REGS_FIRST prologues.
        (ix86_expand_epilogue): Handle SAVED_REGS_FIRST epilogues.
        (print_reg): Abort on FRAME_POINTER_REGNUM

Mon Jan 24 16:50:08 MET 2000  Jan Hubicka  <jh@suse.cz>

        * i386.h (PREDICATE_CODES): Add aligned_operand.
        * i386.c (aligned_operand): New function.
        (ix86_aligned_p): Kill.
        * i386.md (movhi_1): Emit mov for aligned operands.
        (promoting peep2s): Use aligned_operand.

2000-01-23  Zack Weinberg  <zack@wolery.cumb.org>

        * fixinc/fixfixes.c (fix_char_macro_uses): Correct regular
        expression to allow underscores in macro names.
        (fix_char_macro_defines): Increment scanning pointer.

2000-01-23  Richard Henderson  <rth@cygnus.com>

        * alpha/osf.h (TARGET_HAS_XFLOATING_LIBS): Define.
        * alpha/osf5.h: New file.
        * configure.in (alpha-*-osf5): Add it to tm_file.

        * emit-rtl.c (operand_subword): Support TFmode on a 64-bit target.

        * alpha-protos.h (alpha_emit_xfloating_arith): Declare.
        (alpha_emit_xfloating_cvt, function_arg): Declare.
        * alpha.c (alpha_emit_conditional_branch): Call
        alpha_emit_xfloating_compare for TFmode compares.
        (alpha_lookup_xfloating_lib_func): New.
        (alpha_compute_xfloating_mode_arg): New.
        (alpha_emit_xfloating_libcall): New.
        (alpha_emit_xfloating_arith): New.
        (alpha_emit_xfloating_compare): New.
        (alpha_emit_xfloating_cvt): New.
        (print_operand): Add default abort case.
        (function_arg): Mind FUNCTION_ARG_PASS_BY_REFERENCE.
        * alpha.h (TARGET_HAS_XFLOATING_LIBS): New.
        (BIGGEST_ALIGNMENT): Increase to 128 bits.
        (RETURN_IN_MEMORY): True for TF/TCmode.
        (ALPHA_ARG_SIZE): TF/TCmode is passed indirect.
        (FUNCTION_ARG): Move to function_arg.
        (FUNCTION_ARG_PASS_BY_REFERENCE): New.
        (ASM_OUTPUT_LONG_DOUBLE): New.
        (ASM_OUTPUT_DOUBLE): Always output bits.
        * alpha.md (addtf3, divtf3, multf3, subtf3, cmptf): New.
        (fix_trunctfdi2, floatditf2, floatunsditf2): New.
        (extenddftf2, trunctfdf2): New.

2000-01-23  Alexandre Oliva  <oliva@lsd.ic.unicamp.br>

        * config/sparc/sol2-sld-64.h (TRANSFER_FROM_TRAMPOLINE): Moved...
        * config/sparc/sol2.h: ... here.

2000-01-24  Michael Hayes  <m.hayes@elec.canterbury.ac.nz>

        * basic-block.h (struct loops): New field `levels'.
        * flow.c (flow_loops_level_compute): Traverse all outer loops.
        (flow_loop_level_compute): Initialise level to 1.
        (flow_loops_find): Set loops->levels.
        (flow_loops_dump): Print loops->levels.

2000-01-23  Richard Henderson  <rth@cygnus.com>

        * libgcc2.c (dwarf_reg_size_table): Size with DWARF_FRAME_REGISTERS.
        (throw_helper): Iterate over DWARF_FRAME_REGISTERS.

2000-01-23  Richard Henderson  <rth@cygnus.com>

        * i386.c (dbx_register_map, svr4_dbx_register_map): New.
        * i386.h (DBX_REGISTER_NUMBER): Use them.
        * i386/beos-elf.h, i386/freebsd-elf.h, i386/i386elf.h: Likewise.
        * i386/linux.h, i386/osfrose.h, i386/ptx4-i.h: Likewise.
        * i386/rtemself.h, i386/sco5.h, i386/sysv4.h: Likewise.
        * i386/sequent.h: Kill incorrect comment.

2000-01-23  Mark Mitchell  <mark@codesourcery.com>

        * ggc-page.c (struct page_entry): Make `context_depth' an
        `unsigned short'.
        (struct globals): Likewise.

2000-01-23  Clinton Popetz  <cpopetz@cygnus.com>

        * loop.c (check_dbra_loop): When checking a loop for
        reversability, check the source of any stores to ensure
        they don't depend on an initial value.

2000-01-23  Michael Hayes  <m.hayes@elec.canterbury.ac.nz>

        * config/c4x/c4x.h (ASM_OUTPUT_BSS): Redefine.

2000-01-22  Zack Weinberg  <zack@wolery.cumb.org>

        * fixinc/fixincl.c: Move declarations of 'pz_fname' and
        'pz_scan' into scope of entire function.  Only affects
        compiles with -DDEBUG.

2000-01-22  Alan Modra <alan@SPRI.Levels.UniSA.Edu.Au>

        * config/elfos.h (UNIQUE_SECTION): Restore uninitialised data
        section naming to that prior to 2000-01-07 patch.
        * config/mips/elf.h (UNIQUE_SECTION): Ditto.
        * config/mips/elf64.h (UNIQUE_SECTION): Ditto.
        * config/mips/iris6gld.h (UNIQUE_SECTION): Ditto.
        * config/i386/interix.c (UNIQUE_SECTION): Ditto.
        * config/i386/winnt.c (UNIQUE_SECTION): Ditto.

2000-01-22  Bernd Schmidt  <bernds@cygnus.co.uk>

        * config/arm/arm.c (soft_df_operand): Reject SUBREGs containing a
        constant.

2000-01-21  Jim Wilson  <wilson@cygnus.com>

        * fixinc/inclhack.tpl: Test for directory before trying to cd into it.
        * fixinc/fixincl.sh, fixinc/inclhack.sh: Regenerate.

2000-01-21  Zack Weinberg  <zack@wolery.cumb.org>

        * cpphash.c (change_newlines): Delete function.
        (struct argdata): Delete 'newlines' and 'use_count' fields.
        (macroexpand): Remove code referencing those fields.

2000-01-22  Michael Hayes  <m.hayes@elec.canterbury.ac.nz>

        * loop.c (loops_info): New variable.
        (loop_optimize): Allocate loops->array and free it on exit.
        Allocate memory for loops_info and assign to each loop,
        replacing alloca.
        (find_and_verify_loops): Do not allocate loops->array.

2000-01-21  Zack Weinberg  <zack@wolery.cumb.org>

        * fixinc/fixfixes.c (machine_name_fix): Don't free 'scratch'.

2000-01-21  Jakub Jelinek  <jakub@redhat.com>

        * config/sparc/sparc.md (movsi_pic_label_ref): Avoid creating new
        pseudos if expanded after first flow.
        (movdi_pic_label_ref): Likewise.

2000-01-20  Richard Henderson  <rth@cygnus.com>

        * jump.c (jump_optimize_1): Don't do addr_vec optimizations at -O0.

2000-01-20  Zack Weinberg  <zack@wolery.cumb.org>

        * Makefile.in (fixinc.sh): Depend on specs.
        * fixinc/Makefile.in: Add rule to create machname.h.
        (fixlib.o): Depend on machname.h.
        * fixinc/fixtests.c (machine_name): New test.
        * fixinc/fixfixes.c (machine_name): New fix.
        * fixinc/fixlib.c (mn_get_regexps): New helper function for
        the machine_name test and fix.
        * fixinc/fixlib.h: Prototype it.
        * fixinc/inclhack.def (machine_name): Use the C test and fix.
        * fixinc/fixincl.x, fixinc/inclhack.sh: Rebuild.

        * gcc.c (do_spec_1) [case P]: Take care not to create
        identifiers with three leading or trailing underscores.

        * fixinc/Makefile.in (FIXINC_DEFS): Add -DIN_GCC.
        (fixincl): Don't specify libraries twice on link line.
        (gnu-regex.o): Remove special rule.
        * fixinc/gnu-regex.c: Define REGEX_MALLOC if C_ALLOCA was
        defined by config.h.  Do not define _REGEX_RE_COMP.
        (regcomp): Allocate and initialize a fastmap.
        * fixinc/gnu-regex.h: Do not define _REGEX_RE_COMP.

2000-01-20  Brad Lucier  <lucier@math.purdue.edu>

        * Makefile.in (predict.o): Depend on $(EXPR_H), not expr.h.

2000-01-19  Richard Henderson  <rth@cygnus.com>

        * flow.c (propagate_block): Replace FIRST, LAST and BNUM
        arguments with BB.  Update all callers.  Tidy line wrapping.

2000-01-19  Clinton Popetz  <cpopetz@cygnus.com>

        * emit-rtl.c (try_split): Return last_insn if we split the
        last_insn.

Thu Jan 20 01:01:23 MET 2000  Jan Hubicka  <jh@suse.cz>

        * i386-protos.h (ix86_compute_frame_size): Remove prototype.
        (ix86_initial_elimination_offset): Declare.
        * i386.c (ix86_nsaved_regs): Break out from ...
        (ix86_can_use_return_insn_p): ... here.
        (ix86_emit_save_regs): Break out from ...
        (ix86_expand_prologue): ... here.
        (ix86_emit_epilogue_esp_adjustment, ix86_emit_restore_regs): Break
        out from ...
        (ix86_expand_epilogue): ... here.
        (ix86_compute_frame_size): Make static, add prototype.
        (ix86_initial_elimination_offset): Break out from ...
        * i386.h (INITIAL_ELIMINATION_OFFSET): ... here.

2000-01-19  Kaveh R. Ghazi  <ghazi@caip.rutgers.edu>

        * recog.h (OUT_FCN): Delete.

        * vax.md: Call `get_insn_template' instead of OUT_FCN.

2000-01-19  Kaveh R. Ghazi  <ghazi@caip.rutgers.edu>

        * cppalloc.c: PROTO -> PARAMS.
        * cpperror.c: Likewise.
        * cppfiles.c: Likewise.
        * cpplib.c: Likewise.
        * cpplib.h: Likewise.

        * config/arm/arm-protos.h: PROTO -> PARAMS.
        * config/arm/arm.c: Likewise.
        * config/c4x/c4x.c: Likewise.
        * config/fr30/fr30-protos.h: Likewise.
        * config/nextstep.c: Likewise.
        * config/pa/pa.c: Likewise.
        * config/pj/pj.c: Likewise.
        * config/rs6000/rs6000.c: Likewise.
        * config/v850/v850-protos.h: Likewise.
        * config/v850/v850.c: Likewise.

2000-01-19  Kaveh R. Ghazi  <ghazi@caip.rutgers.edu>

        * i370-protos.h: New file.

        * i370.c: Include tm_p.h.  Fix compile time warnings.

        * i370.h: Move prototypes to i370-protos.h.  Fix compile time
        warnings.

        * i370.md: Likewise.

2000-01-19  Kaveh R. Ghazi  <ghazi@caip.rutgers.edu>

        * real.c (enan, einan, eiisnan, eiisneg, make_nan): Wrap in NANS.
        (target_isinf, target_isnan, eisnan): Mark parameter with
        ATTRIBUTE_UNUSED.
        (eiisinf): Wrap in INFINITY.
        (etoe113, etoe64, etoe53, etoe24): Wrap label `nonorm' in INFINITY.
        (ibmtoe): Remove unused variable `rndsav'.

Wed Jan 19 20:23:06 2000  J"orn Rennecke <amylaar@cygnus.co.uk>

        * sh.h (PASS_IN_REG_P): Remove extraneous paranthesis.
        (GO_IF_LEGITIMATE_ADDRESS): Added missing tab.

2000-01-19  Zack Weinberg  <zack@wolery.cumb.org>

        * fixinc/Makefile.in: Correct dependencies of fixincl and fixincl.o.
        * fixinc/fixfixes.c (IO_use, CTRL_use, IO_defn, CTRL_defn): New fixes.
        (fix_char_macro_defines, fix_char_macro_uses): New functions.

        * fixinc/fixlib.c (is_cxx_header): Do the text scan with a regexp.
        Recognize Emacs mode markers also.
        * fixinc/fixtests.c (else_endif_label): Fix bug in recognition of
        C++ comments in C++ headers.  Call is_cxx_header only if
        necessary.

        * fixinc/inclhack.def (avoid_bool): Add select for the problem and
        bypass for ncurses.
        (bsd43_io_macros, io_def_quotes, ioctl_fix_ctrl): Replace with...
        (io_def_quotes, io_use_quotes, ctrl_def_quotes, ctrl_use_quotes):
        ... these, which use the new C fixes.
        (math_exception): Escape literal '+' in bypass expression.

        * fixinc/fixincl.x, fixinc/fixincl.sh, fixinc/inclhack.sh:
        Regenerate.

2000-01-19  Geoff Keating  <geoffk@cygnus.com>

        * rtlanal.c (reg_referenced_p): A CLOBBER of a MEM uses any REGs
        inside the MEM.

2000-01-20  Michael Hayes  <m.hayes@elec.canterbury.ac.nz>

        * loop.c (loop_optimize): Allocate loop_info structure for each loop
        prior to calling scan_loop.

Wed Jan 19 19:54:38 2000  J"orn Rennecke <amylaar@cygnus.co.uk>

        * sh.c (find_barrier, gen_block_redirect): Fix indentation.
        (split_branches, calc_live_regs): Likewise.

Wed Jan 19 19:12:36 2000  J"orn Rennecke <amylaar@cygnus.co.uk>

        * sh.md (fpu_single, fp_mode): New attributes.

2000-01-20  Michael Hayes  <m.hayes@elec.canterbury.ac.nz>

        * loop.c (current_loop_info): Renamed from loop_info_data
        and changed to a pointer.
        (loop_optimize): Allocate loop_info structure for each loop
        and initialise to zero.
        (scan_loop): Set current_loop_info.

        * unroll.c (loop_iterations): Don't abort if REG_USERVAR_P set
        on iteration_var.

2000-01-19  Richard Henderson  <rth@cygnus.com>

        * stupid.c: Die die die.
        * Makefile.in (OBJS): Remove stupid.o.
        (stupid.o): Likewise.

        * except.c (emit_eh_context): Don't emit USEs for stupid.
        * explow.c (probe_stack_range): Likewise.
        * flags.h (obey_regdecls): Remove.
        * flow.c (find_basic_blocks): Don't run try_merge_blocks
        when not optimizing.
        (life_analysis): Limit data collection when not optimizing.
        (mark_regs_live_at_end): Always mark the return value registers.
        (mark_used_regs): Remove dummy RETURN case.
        (print_rtl_with_bb): Don't consult obey_regdecls.
        * function.c (use_variable, use_variable_after): Remove.
        (assign_parms): Consult optimize not obey_regdecls.
        (expand_function_start): Don't emit USEs for stupid.
        (expand_function_end): Likewise.
        * global.c (build_insn_chain): Export.
        * integrate.c (expand_inline_function): Kill return-value USE
        handling code.
        * jump.c (jump_optimize_1): Do simple jump optimizations and
        dead code elimination.
        (calculate_can_reach_end): Remove check_deleted argument.
        (delete_insn): Patch out insns even when not optimizing.
        * local-alloc.c (block_alloc): Don't do tying when not optimizing.
        * rtl.h (use_variable, use_variable_after): Remove declarations.
        (build_insn_chain): Declare.
        * stmt.c (expand_value_return): Don't emit USEs for stupid.
        (expand_end_bindings): Likewise.
        (expand_decl): Likewise.  Consult optimize not obey_regdecls.
        * toplev.c (obey_regdecls): Remove.
        (rest_of_compilation): Don't set it.  Kill stupid in favour of
        flow1, local-alloc, and reload.
        (main): Don't set obey_regdecls.

        * config/nextstep.c (handle_pragma): Likewise.

        * alpha/alpha.md (allocate_stack): Don't emit USEs for stupid.

        * arm/arm.h (CONDITIONAL_REGISTER_USAGE): Don't fix reg 0 for stupid.

2000-01-18  Kaveh R. Ghazi  <ghazi@caip.rutgers.edu>

        * alpha-protos.h: PROTO -> PARAMS.
        * alpha.c: Likewise.
        * elf.h: Likewise.
        * h8300.c: Likewise.
        * i386-protos.h: Likewise.
        * i386.c: Likewise.
        * m32r-protos.h: Likewise.
        * m32r.c: Likewise.
        * mips.c: Likewise.
        * mips.md: Likewise.
        * gmon-sol2.c: Likewise.
        * sparc.c: Likewise.

2000-01-18  Kaveh R. Ghazi  <ghazi@caip.rutgers.edu>

        * ns32k-protos.h: New file.

        * ns32k.c: Fix compile time warnings.

        * ns32k.h: Move prototypes to ns32k-protos.h.  Fix compile time
        warnings.

        * ns32k.md: Likewise.

2000-01-18  Kaveh R. Ghazi  <ghazi@caip.rutgers.edu>

        * vax-protos.h: New file.

        * vax.c: Fix compile time warnings.

        * vax.h: Move prototypes to vax-protos.h.  Fix compile time
        warnings.

        * vax.md: Likewise.

        * vaxv.md: Likewise.

2000-01-18  Kaveh R. Ghazi  <ghazi@caip.rutgers.edu>

        * romp-protos.h: New file.

        * romp.c: Fix compile time warnings.

        * romp.h: Move prototypes to romp-protos.h.  Fix compile time
        warnings.

        * romp.md: Likewise.

2000-01-18  Kaveh R. Ghazi  <ghazi@caip.rutgers.edu>

        * we32k-protos.h: New file.

        * we32k.c: Fix compile time warnings.

        * we32k.h: Move prototypes to we32k-protos.h.  Fix compile time
        warnings.

2000-01-18  Kaveh R. Ghazi  <ghazi@caip.rutgers.edu>

        * calls.c (emit_call_1): Mark parameter with ATTRIBUTE_UNUSED.

        * except.c (eh_regs): Likewise.

        * final.c (output_operand): Likewise.

        * fold-const.c (target_isinf, target_isnan): Likewise.

Tue Jan 18 16:19:55 MET 2000  Jan Hubicka  <hubicka@freesoft.cz>

        * i386.h (BIGGEST_ALIGNMENT): Set to 128.
        (BIGGEST_FIELD_ALIGNMENT): Set to (TARGET_ALIGN_DOUBLE ? 64 : 32)

        * i386.md (memstr): Do not use rep stosb for counts divisible by 4
        when optimize_size.
        (clrstrsi): Rewrite.
        (strsethi, strsetqi): New expanders.
        (strsethi_1, strsetqi_1, rep_stossi, rep_stosqi): New insn patterns.
        (cmpstrsi): Emit compare insn before cmpstrsi_1
        (cmpstrsi_nz): use flags, set type to str, prefix_length to 1.
        (strlensi_1): Likewise.
        (cmpstrsi_1): Likewise; do not output compare.
        (strlen expander): Do not unroll when optimizing for size.
        (*subsi3_carry): Rename to subsi3_carry
        (addqi3_cc): New pattern.
        * i386.h (processor_costs): Add move_ratio field.
        (MOVE_RATIO): Use move_ratio field, set to 3 for OPTIMIZE_SIZE
        * i386.c (*_cost): Set move_ratio.
        (x86_unroll_strlen): Enable for Athlon, PPro and K6 too.
        (x86_expand_strlensi_1): Rewrite the main loop.

2000-01-17  Richard Henderson  <rth@cygnus.com>

        * combine.c (combine_simplify_rtx): Give FLOAT_STORE_FLAG_VALUE a mode.
        * cse.c (find_comparison_args, fold_rtx): Likewise.
        * integrate.c (subst_constants): Likewise.
        * loop.c (get_condition): Likewise.

        * tm.texi (FLOAT_STORE_FLAG_VALUE): Update docs.

        * alpha.h (FLOAT_STORE_FLAG_VALUE): Use REAL_VALUE_ATOF.

2000-01-18  Martin v. Löwis  <loewis@informatik.hu-berlin.de>

        * c-parse.in (SAVE_WARN_FLAGS): Create an INTEGER_CST.
        (RESTORE_WARN_FLAGS): Unpack it.
        Change semantic type of extension to ttype.
        * c-common.c (split_specs_attrs): Expect an INTEGER_CST.
        * c-parse.y, c-parse.c, objc/objc-parse.y,
        objc/objc-parse.c: Regenerate.

2000-01-17  Zack Weinberg  <zack@wolery.cumb.org>

        * fixinc/fixlib.c: Add copyright notice.
        (compile_re): New function.
        * fixinc/fixlib.h: Prototype compile_re.

        * fixinc/fixfixes.c, fixinc/fixtests.c, fixinc/fixincl.c:
        Use compile_re to compile regular expressions.

        * fixinc/fixincl.c (egrep_test): Don't bother asking regexec
        where the pattern matched.

        * fixinc/inclhack.def (sun_memcpy): Move to AAB_sun_memcpy,
        use 'replace'.
        (ultrix_ansi_compat): Likewise.
        (interactv_add1): Rename to 'isc_omits_with_stdc', remove shell test,
        add egrep test.
        (interactv_add2, interactv_add3): Delete.
        (x11_sprintf): Don't use filename glob.
        * fixinc/fixincl.x, fixinc/inclhack.sh, fixinc/fixincl.sh:
        Regenerate.

2000-01-17  Kaveh R. Ghazi  <ghazi@caip.rutgers.edu>

        * print-rtl.c: PROTO -> PARAMS.
        * real.c: Likewise.
        * reg-stack.c: Likewise.
        * resource.c: Likewise.
        * sdbout.h: Likewise.
        * simplify-rtx.c: Likewise.
        * stor-layout.c: Likewise.
        * stupid.c: Likewise.
        * xcoffout.c: Likewise.
        * xcoffout.h: Likewise.

2000-01-17  Kaveh R. Ghazi  <ghazi@caip.rutgers.edu>

        * toplev.c: PROTO -> PARAMS.
        * toplev.h: Likewise.
        * tree.c: Likewise.
        * tree.h: Likewise.
        * unroll.c: Likewise.
        * varasm.c: Likewise.
        * varray.c: Likewise.
        * varray.h: Likewise.

2000-01-17  Kaveh R. Ghazi  <ghazi@caip.rutgers.edu>

        * reload.c: PROTO -> PARAMS.
        * reload.h: Likewise.
        * reload1.c: Likewise.
        * reorg.c: Likewise.
        * resource.h: Likewise.
        * rtl.c: Likewise.
        * rtl.h: Likewise.
        * rtlanal.c: Likewise.
        * sbitmap.h: Likewise.
        * sdbout.c: Likewise.
        * stack.h: Likewise.
        * stmt.c: Likewise.
        * system.h: Likewise.

2000-01-17  Kaveh R. Ghazi  <ghazi@caip.rutgers.edu>

        * machmode.h: PROTO -> PARAMS.
        * mbchar.h: Likewise.
        * mips-tdump.c: Likewise.
        * mips-tfile.c: Likewise.
        * optabs.c: Likewise.
        * output.h: Likewise.
        * prefix.c: Likewise.
        * profile.c: Likewise.
        * protoize.c: Likewise.
        * real.h: Likewise.
        * recog.c: Likewise.
        * recog.h: Likewise.
        * regclass.c: Likewise.
        * regmove.c: Likewise.
        * regs.h: Likewise.

2000-01-17  Kaveh R. Ghazi  <ghazi@caip.rutgers.edu>

        * ggc-common.c: PROTO -> PARAMS.
        * ggc-page.c: Likewise.
        * ggc-simple.c: Likewise.
        * ggc.h: Likewise.
        * global.c: Likewise.
        * graph.c: Likewise.
        * gthr-win32.h: Likewise.
        * haifa-sched.c: Likewise.
        * halfpic.h: Likewise.
        * integrate.c: Likewise.
        * integrate.h: Likewise.
        * jump.c: Likewise.
        * lcm.c: Likewise.
        * local-alloc.c: Likewise.
        * loop.c: Likewise.
        * loop.h: Likewise.

2000-01-17  Kaveh R. Ghazi  <ghazi@caip.rutgers.edu>

        * genattr.c: PROTO -> PARAMS.
        * genattrtab.c: Likewise.
        * gencheck.c: Likewise.
        * gencodes.c: Likewise.
        * genconfig.c: Likewise.
        * genemit.c: Likewise.
        * genextract.c: Likewise.
        * genflags.c: Likewise.
        * gengenrtl.c: Likewise.
        * genopinit.c: Likewise.
        * genoutput.c: Likewise.
        * genpeep.c: Likewise.
        * genrecog.c: Likewise.

2000-01-16  Mark Mitchell  <mark@codesourcery.com>

        * tree.h (BINFO_VPTR_FIELD): Augment documentation.

2000-01-16  Alexandre Oliva  <oliva@lsd.ic.unicamp.br>

        * aclocal.m4 (AC_FUNC_MMAP_ZERO): New macro.
        * configure.in (AC_FUNC_MMAP_ZERO): Use instead of AC_FUNC_MMAP.
        * ggc-page.c: Replace HAVE_MMAP with HAVE_MMAP_ZERO.
        * configure, config.in: Rebuilt.

2000-01-16  Zack Weinberg  <zack@wolery.cumb.org>

        * config/i386/i386.md: Add peephole to merge successive stack
        adjusts.

Sat Jan 15 15:41:14 EST 2000  John Wehle  (john@feith.com)

        * gcse.c (insert_insn_end_bb): Use emit_block_insn_before
        instead of emit_insn_before.  Also handle NOTE_INSN_BASIC_BLOCK
        when walking backwards to find all the parameter loads when
        the basic block ends in a call.

2000-01-15  Michael Hayes  <m.hayes@elec.canterbury.ac.nz>

        * loop.c (this_loop_info): Delete.
        (uid_loop): Add in place of uid_loop_num.  All uses updated.
        (loop_number_exit_count): Delete and replace with entry in loop
        structure.  All uses updated.
        (loop_number_loop_starts, loop_number_loop_ends): Likewise.
        (loop_number_loop_cont, loop_number_cont_dominator): Likewise.
        (loop_outer_loop): Likewise.
        (loop_invalid, loop_number_exit_labels): Likewise.
        (loop_used_count_register): Delete and replace with entry in
        loop_info structure.
        (find_and_verify_loops): Add loops argument.
        (verify_dominator, mark_loop_jump, prescan_loop): Replace loop_start,
        loop_end, etc. arguments with loop structure pointer.  All callers
        changed.
        (loop_reg_used_before_p, scan_loop, strength_reduce): Likewise.
        (check_dbra_loop, next_insn_in_loop, try_copy_prop): Likewise.
        (load_mems_and_recount_loop_regs_set, load_mems): Likewise.
        (insert_bct): Likewise.
        (basic_induction_var): New argument level.
        * loop.h (struct loop_info): Delete fields num, loops_enclosed,
        vtop, and cont.  Add used_count_register.
        (uid_loop): Delete declaration.
        (loop_number_exit_count): Likewise.
        (loop_number_loop_starts, loop_number_loop_ends): Likewise.
        (loop_number_loop_cont, loop_number_cont_dominator): Likewise.
        (loop_outer_loop, loop_used_count_register): Likewise.
        (loop_invalid, loop_number_exit_labels): Likewise.
        (unroll_loop): Replace loop_start and loop_end arguments
        with loop structure pointer.
        (loop_precondition_p, loop_iterations): Likewise.
        Include basic-block.h.
        * unroll.c: (unroll_loop): Replace loop_start and loop_end arguments
        with loop structure pointer.
        (loop_precondition_p, loop_iterations): Likewise.
        * basic-block.h (struct loop): New entries vtop, cont,
        cont_dominator, start, end, top, scan_start, exit_labels,
        exit_count.
        * Makefile.in (LOOP_H): Add basic-block.h to dependencies.

2000-01-15  Gerald Pfeifer  <pfeifer@dbai.tuwien.ac.at>

        * defaults.h (ASM_OUTPUT_ASCII): Use ISDIGIT.

2000-01-14  Nathan Sidwell  <sidwell@codesourcery.com>

        * config.in: Rebuilt for 2000-01-13 change to acconfig.h.

2000-01-14  Kaveh R. Ghazi  <ghazi@caip.rutgers.edu>

        * pdp11-protos.h: New file.

        * pdp11.c: Include tm_p.h.  Add static prototypes.  Fix compile
        time warnings.

        * pdp11.h: Move prototypes to pdp11-protos.h.  Fix compile time
        warnings.

        * pdp11.md: Likewise.

        * 2bsd.h: Likewise.

2000-01-14  Kaveh R. Ghazi  <ghazi@caip.rutgers.edu>

        * mn10300-protos.h: New file.

        * mn10300.c: Include tm_p.h.  Add static prototypes.  Fix compile
        time warnings.

        * mn10300.h: Move prototypes to mn10300-protos.h.  Fix compile time
        warnings.

        * mn10300.md: Likewise.

2000-01-14  Kaveh R. Ghazi  <ghazi@caip.rutgers.edu>

        * mn10200-protos.h: New file.

        * mn10200.c: Include tm_p.h.  Add static prototypes.  Fix compile
        time warnings.

        * mn10200.h: Move prototypes to mn10200-protos.h.  Fix compile time
        warnings.

        * mn10200.md: Likewise.

2000-01-14  Kaveh R. Ghazi  <ghazi@caip.rutgers.edu>

        * h8300-protos.h: New file.

        * h8300.c: Include tm_p.h.  Add static prototypes.  Fix compile
        time warnings.

        * h8300.h: Move prototypes to h8300-protos.h.  Fix compile time
        warnings.

        * h8300.md: Likewise.

2000-01-14  Kaveh R. Ghazi  <ghazi@caip.rutgers.edu>

        * varasm.c (asm_output_bss): Mark parameters with ATTRIBUTE_UNUSED.
        (asm_emit_uninitialised): Likewise.

2000-01-13  Gavin Romig-Koch  <gavin@cygnus.com>

        * config/mips/mips.h (ISA_HAS_INT_CONDMOVE): New.
        * config/mips/mips.md: Use ISA_HAS_INT_CONDMOVE.

2000-01-14  Clinton Popetz  <cpopetz@cygnus.com>

        * config/mips/mips.c (override_options): Don't turn on extra
        alignment for mips16.

2000-01-14  Clinton Popetz  <cpopetz@cygnus.com>

        * config/mips/mips.c (mips_va_arg): Fix fprv for the 32 bit
        eabi, and make sure queued POSTINCREMENT rtl is emitted at
        the right point.

2000-01-14  Clinton Popetz  <cpopetz@cygnus.com>

        * builtins.c (PAD_VARARGS_DOWN): Define.
        (std_expand_builtin_va_arg): Use the above macro.
        * config/mips/mips.h (PAD_VARARGS_DOWN): Define.
        * tm.texi (Register Arguments): Document the above macro.

2000-01-14  Nick Clifton  <nickc@cygnus.com>

        * emit-rtl.c (emit_insn): If checking is enabled, make sure
        that this function has not been used to emit a jump
        instruction.

        * jump.c (return_jump_1): Cope with being passed a null rtx.

2000-01-14  Kaveh R. Ghazi  <ghazi@caip.rutgers.edu>

        * eh-common.h: PROTO -> PARAMS.
        * emit-rtl.c: Likewise.
        * errors.c: Likewise.
        * errors.h: Likewise.
        * except.c: Likewise.
        * except.h: Likewise.
        * explow.c: Likewise.
        * expmed.c: Likewise.
        * expr.c: Likewise.
        * expr.h: Likewise.
        * final.c: Likewise.
        * fix-header.c: Likewise.
        * flow.c: Likewise.
        * fold-const.c: Likewise.
        * function.c: Likewise.
        * function.h: Likewise.
        * gcc.c: Likewise.
        * gcov-io.h: Likewise.
        * gcov.c: Likewise.
        * gcse.c: Likewise.

2000-01-14  Kaveh R. Ghazi  <ghazi@caip.rutgers.edu>

        * sh-protos.h: New file.

        * sh.c: Include insn-config.h, toplev.h, recog.h and tm_p.h.
        Add static prototypes.  Fix compile time warnings.

        * sh.h: Move prototypes to sh-protos.h.  Fix compile time warnings.
        * sh.md: Likewise.
        * elf.h: Likewise.

2000-01-14  Kaveh R. Ghazi  <ghazi@caip.rutgers.edu>

        * arc-protos.h: New file.

        * arc.c: Include tm_p.h.  Add static prototypes.  Fix compile
        time warnings.

        * arc.h: Move prototypes to arc-protos.h.  Fix compile time
        warnings.

        * arc.md: Likewise.

2000-01-14  Kaveh R. Ghazi  <ghazi@caip.rutgers.edu>

        * dsp16xx-protos.h: New file.

        * dsp16xx.c: Include tm_p.h.  Add static prototypes.  Fix compile
        time warnings.

        * dsp16xx.h: Move prototypes to dsp16xx-protos.h.  Fix compile time
        warnings.

        * dsp16xx.md: Likewise.

2000-01-14  Kaveh R. Ghazi  <ghazi@caip.rutgers.edu>

        * convex-protos.h: New file.

        * convex.c: Include tm_p.h.  Add static prototypes.  Fix compile
        time warnings.

        * convex.h: Move prototypes to convex-protos.h.  Fix compile time
        warnings.

2000-01-14  Kaveh R. Ghazi  <ghazi@caip.rutgers.edu>

        * elxsi-protos.h: New file.

        * elxsi.c: Include tm_p.h.  Add static prototypes.  Fix compile
        time warnings.

        * elxsi.h: Move prototypes to elxsi-protos.h.  Fix compile time
        warnings.

        * elxsi.md: Likewise.

2000-01-14  Clinton Popetz  <cpopetz@cygnus.com>

        * config/mips/mips.h (REGISTER_MOVE_COST): Remove redundant
        case for moving from HI/LO/HI_LO_REG.  This makes the behavior
        match the comment for MIPS16.

Fri Jan 14 00:28:06 2000  Jeffrey A Law  (law@cygnus.com)

        * flow.c (split_edge): Do not call set_block_for_insn if we
        do not have a basic_block_for_insn structure.

        * fr30.h (TRAMPOLINE_TEMPLATE): Use nops to ensure the static chain
        and destination functions are 32bit aligned within the trampoline.
        (TRAMPOLINE_SIZE, INITIALIZE_TRAMPOLINE): Corresponding changes.
        (TRAMPOLINE_ALIGNMENT): Define.

        * cse.c (cse_insn): When changing (set (pc) (reg)) to
        (set (pc) (label_ref)), verify the change creates a valid insn.

        * fr30.c (call_operand): Tighten and rework to match rules for
        call RTL expressions.
        * fr30.h (PREDICATE_CODES, case call_operand): Only allow MEMs.
        * fr30.md (call patterns): Improve constraints.

Thu Jan 13 23:44:03 2000  Richard Henderson  <rth@cygnus.com>

        * fr30.c (fr30_expand_epilogue): Revert last change.
        Use emit_jump_insn for the return insn.

Thu Jan 13 14:46:03 2000  Jason Eckhardt  <jle@cygnus.com>
                          Stan Cox  <scox@cygnus.com>

        * predict.c: New file. Preliminary infrastructure work for static
        branch prediction and basic block reordering.
        * basic-block.h: Add prototype for estimate_probability.
        * Makefile.in: Add rules for predict.o.

2000-01-13  Jason Merrill  <jason@yorick.cygnus.com>

        * fixincludes (va_list): Use __not_va_list__ for the dummy.
        * fixinc/*: Likewise.

2000-01-13  Kaveh R. Ghazi  <ghazi@caip.rutgers.edu>

        * cccp.c: PROTO -> PARAMS.
        * cexp.y: Likewise.
        * collect2.c: Likewise.
        * combine.c: Likewise.
        * convert.h: Likewise.
        * cse.c: Likewise.
        * dbxout.c: Likewise.
        * dbxout.h: Likewise.
        * diagnostic.c: Likewise.
        * doprint.c: Likewise.
        * dwarf2out.c: Likewise.
        * dwarf2out.h: Likewise.
        * dwarfout.c: Likewise.
        * dwarfout.h: Likewise.
        * dyn-string.h: Likewise.

2000-01-13  Kaveh R. Ghazi  <ghazi@caip.rutgers.edu>

        * calls.c (emit_call_1): Wrap varaible `struct_value_size_rtx' in
        macro conditionals guarding use.

        * dwarf2out.c: Include "tm_p.h".

        * function.c (locate_and_pad_parm): Mark parameter with
        ATTRIBUTE_UNUSED.
        (expand_function_end): Likewise for variable `context'.

        * reorg.c (make_return_insns): Wrap prototype in macro HAVE_return.

2000-01-13  Nick Clifton  <nickc@cygnus.com>

        * config/fr30/fr30.c (fr30_expand_epilogue): Emit USEs of pop'ed
        register to prevent compile time warnings.

2000-01-13  Zack Weinberg  <zack@wolery.cumb.org>

        * longlong.h [i386] (udiv_qrnnd): Rename 'd' argument to 'dv'
        to avoid -Wtraditional warning.

2000-01-13  Kaveh R. Ghazi  <ghazi@caip.rutgers.edu>

        * 1750a-protos.h: New file.

        * 1750a.c: Include tm_p.h.  Add static prototypes.  Fix compile
        time warnings.

        * 1750a.h: Move prototypes to 1750a-protos.h.  Fix compile time
        warnings.

        * 1750a.md: Likewise.

2000-01-13  Kaveh R. Ghazi  <ghazi@caip.rutgers.edu>

        * a29k-protos.h: New file.

        * a29k.c: Include tm_p.h.  Add static prototypes.  Fix compile
        time warnings.

        * a29k.h: Move prototypes to a29k-protos.h.  Fix compile time
        warnings.

2000-01-13  Kaveh R. Ghazi  <ghazi@caip.rutgers.edu>

        * clipper-protos.h: New file.

        * clipper.c: Include tm_p.h.  Add static prototypes.  Fix compile
        time warnings.

        * clipper.h: Move prototypes to clipper-protos.h.  Fix compile time
        warnings.

Thu Jan 13 16:03:06 2000  J"orn Rennecke <amylaar@cygnus.co.uk>

        * reload1.c (reload_combine_note_store): Use HARD_REGNO_NREGS.

2000-01-13  Nathan Sidwell  <sidwell@codesourcery.com>

        * configure.in (--enable-new-gxx-abi): New option.
        * acconfig.h (ENABLE_NEW_GXX_ABI): New define.
        * Makefile.in (GXX_ABI_FLAG): New variable.
        * configure: Regenerate.

2000-01-13  Michael Hayes  <m.hayes@elec.canterbury.ac.nz>

        * stor-layout.c (layout_type): Use FORCE_STRUCT_BLK.
        * tm.texi (FORCE_STRUCT_BLK): Document.
        * config/c4x/c4x.h (FORCE_STRUCT_BLK): New macro.

Wed Jan 12 23:12:47 2000  Hans-Peter Nilsson  <hp@axis.com>

        * config/ns32k/ns32k.md: Revert Jan 9 change.

        * genrecog.c (maybe_both_true_2): Do not compare a predicate-test
        to a mode-test, if the predicate is address_operand.

Wed Jan 12 22:34:00 2000  Jeffrey A Law  (law@cygnus.com)

        * combine.c (if_then_else_cond): Be careful about what kinds
        of RTL expressions are passed to operand_subword.

        * flow.c (split_edge): If we have to insert a new jump, make
        sure to associate it with a basic block.

        * flow.c (commit_one_edge_insertion): A block with one successor
        can end in a JUMP_INSN that is not a simplejump.

2000-01-12  Robert Lipe  <robertl@sco.com>

        * i386/sco5.h (INIT_SECTION_ASM_OP_COFF): Rename section to "ctor".
        (BUILD_VA_LIST_TYPE): Define.
        (EH_FRAME_SECTION_ASM_OP): Explictly define to better interact
        with crtstuff.c.

2000-01-12  Jason Merrill  <jason@casey.cygnus.com>

        * cccp.c (do_pragma): Add cast to (char *).

2000-01-12  Richard Henderson  <rth@cygnus.com>
            Fred Fish  <fnf@be.com>
            Jason Merrill  <jason@cygnus.com>

        * configure.in (i?86-*-beos{pe,elf,}*): Recognize.
        * i386/t-beos, i386/x-beos, i386/xm-beos.h: New files.
        * i386/beos-elf.h, i386/beos-pe.h: New files.

        * Makefile.in (CROSS_SYSTEM_HEADER_DIR): New.
        * cross-make (SYSTEM_HEADER_DIR): Define using
        CROSS_SYSTEM_HEADER_DIR.

        * gcc.c (LIBRARY_PATH_ENV): Provide default.
        (process_command): Use it.
        (main): Likewise.  Kill trailing = from env vars.
        (build_search_list): Put it back.
        * collect2.c (main): Use LIBRARY_PATH_ENV.

        * configure.in (GCC_NEED_DECLARATIONS): Add environ.
        * toplev.c: Use NEED_DECLARATION_ENVIRON.

        * tm.texi (Frame Layout): Document SMALL_STACK.
        * c-common.c (c_common_nodes_and_builtins): Check it.

        * system.h: Undef alloca after including glibc's <stdlib.h>,
        if USE_C_ALLOCA is defined.

        * gcc.c (set_input): New fn.
        (main): After all input files are compiled, reset the input file
        info to the first.

        * aclocal.m4 (rindex, index): If already defined, don't attempt
        to redefine.

        * ginclude/varargs.h: (__va_list__): Define ifndef.
        * ginclude/stdarg.h: Likewise.

        * ginclude/stddef.h (__WCHAR_TYPE__) [BEOS]: Use int
        instead of unsigned char.

        * hash.h (true, false, boolean): Undef before enum.

        * expmed.c (choose_multiplier): Cast &mhigh_lo and &mhigh_hi to be
        proper type of "HOST_WIDE_INT *", rather than their natural type of
        "unsigned HOST_WIDE_INT *".

2000-01-12  Kaveh R. Ghazi  <ghazi@caip.rutgers.edu>

        * svr3.h (ASM_FILE_START): Wrap if-clause in squigly brackets.

        * recog.c (memory_address_p): Mark parameter with ATTRIBUTE_UNUSED.

        * regclass.c (choose_hard_reg_mode): Likewise.

        * reload.c (find_valid_class, strict_memory_address_p): Likewise.

        * reorg.c (optimize_skip): Wrap prototype in macro conditionals.

2000-01-12  Kaveh R. Ghazi  <ghazi@caip.rutgers.edu>

        * c-common.c: PROTO -> PARAMS.
        * c-common.h: Likewise.
        * c-decl.c: Likewise.
        * c-iterate.c: Likewise.
        * c-lang.c: Likewise.
        * c-lex.c: Likewise.
        * c-lex.h: Likewise.
        * c-parse.in: Likewise.
        * c-pragma.c: Likewise.
        * c-pragma.h: Likewise.
        * c-tree.h: Likewise.
        * c-typeck.c: Likewise.
        * objc/objc-act.c: Likewise.
        * objc/objc-act.h: Likewise.

2000-01-12  Kaveh R. Ghazi  <ghazi@caip.rutgers.edu>

        * m88k-protos.h: New file.

        * m88k.c: Include tm_p.h.  Add static prototypes.  Fix compile
        time warnings.

        * m88k.h: Move prototypes to m88k-protos.h.  Fix compile time warnings.

        * m88k.md: Likewise.

        * tekXD88.h: Likewise.

2000-01-12  Kaveh R. Ghazi  <ghazi@caip.rutgers.edu>

        * m68k-protos.h: New file.

        * m68k.c: Include tm_p.h.  Add static prototypes.  Fix compile
        time warnings.

        * m68k.h: Move prototypes to m68k-protos.h.  Fix compile time warnings.

        * mot3300.h: Likewise.

2000-01-12  Richard Earnshaw <rearnsha@arm.com>

        * haifa-sched.c (split_edges): Pass edgeset_size as second arg to
        extract_bitlst.
        (extract_bitlist): Declare bitlen.

2000-01-12  Zack Weinberg  <zack@wolery.cumb.org

        * cccp.c: Accept and ignore -lang-fortran.

        * c-typeck.c (build_c_cast): Issue -Wcast-qual warnings if the
        qualifiers don't match at any level of pointerness.

2000-01-12  Robert Lipe  <robertl@sco.com>

        * i386/sysv5.h (CPP_SPEC, LIBSPEC): Add -pthreadT.

2000-01-12  Bernd Schmidt  <bernds@cygnus.co.uk>

        * reload1.c (reload_reg_unavailable): New static variable.
        (reload_reg_free_p): Test it.
        (reload_reg_free_for_value_p): Test it instead of
        reload_reg_used.
        (choose_reload_regs_init): Compute it.

Wed Jan 12 03:24:41 2000  Toshiyasu Morita (toshi.morita@sega.com)

        * reorg.c (fill_slots_from_thread): Check modified_in_p
        before replacing.

Wed Jan 12 03:20:31 2000  John Marshall <john_w_marshall@palm.com>

        * gcc.texi (Funding, GNU/Linux, Copying, Contributors): Format
        these nodes even if INTERNALS is not set.

Wed Jan 12 09:39:22 2000  Nick Burrett  <nick.burrett@btinternet.com>

        * gcse.c (delete_null_pointer_checks_1): Cope when
        get_condition cannot determine the condition.

2000-01-12  Gabriel Dos Reis  <gdr@codesourcery.com>

        * toplev.h (set_message_length): Declare.

        * diagnostic.c (obstack_chunk_alloc): Define macro.
        (obstack_chunk_free): Likewise.
        (struct output_buffer): New data structure.
        (vmessage): Remove.
        (output_maximum_width): New variable.
        (doing_line_wrapping, set_message_length, init_output_buffer,
        get_output_prefix, output_space_left, emit_output_prefix,
        output_newline, output_append, output_puts, dump_output,
        vbuild_message_string, build_message_string, build_location_prefix,
        voutput_notice, output_printf, line_wrapper_printf,
        vline_wrapper_message_with_location):  New functions. Implement
        automatic line wrapping.
        (v_message_with_decl): Make it handle automatic line wrapping.
        (v_error_with_file_and_line): Likewise.
        (v_warning_with_file_and_line): Likewise.
        (announce_function): Likewise.
        (default_print_error_function): Likewise.

2000-01-11 16:24 -0800  Zack Weinberg  <zack@wolery.cumb.org>

        * cpplib.h (struct cpp_options): Change lang_asm to char.
        Add lang_fortran.
        * cppinit.c (builtin_array): Take out __STDC_VERSION__, it's
        done in cpp_handle_option now.
        (initialize_builtins): Take out special case code used only by
        __STDC_VERSION__.
        (cpp_handle_option): Turn off trigraphs and trigraph warnings
        if -traditional.  Recognize -lang-fortran and set
        lang_fortran, also turn off cplusplus_comments.
        (print_help): Document -lang-fortran.
        * cpplib.c (handle_directive): Ignore `# 123 "file"' if
        lang_asm. Ignore all directives other than `# 123 "file"' if
        CPP_PREPROCESSED.
        (cpp_get_token): If -traditional, don't recognize directives
        unless the # is in column 1.
        (parse_string): If lang_fortran or lang_asm, silently
        terminate strings ('' or "") at end of line.
        Remove unnecessary braces.

2000-01-11  Alexandre Oliva  <oliva@lsd.ic.unicamp.br>
            Richard Henderson  <rth@cygnus.com>

        * resource.c (mark_referenced_resources): Mark a set strict_low_part
        as used.
        * config/i386/i386.c (ix86_expand_setcc): Re-enable clear + set
        strict_low_part when possible.

2000-01-11  Kaveh R. Ghazi  <ghazi@caip.rutgers.edu>

        * alias.c: PROTO -> PARAMS.
        * basic-block.h: Likewise.
        * bitmap.c: Likewise.
        * bitmap.h: Likewise.
        * builtins.c: Likewise.
        * c-aux-info.c: Likewise.
        * caller-save.c: Likewise.
        * calls.c: Likewise.

2000-01-11  Kaveh R. Ghazi  <ghazi@caip.rutgers.edu>

        * Makefile.in (toplev.o): Depend on regs.h.

        * output.h (tdesc_section): Prototype.

        * regclass.c (copy_cost): Mark parameters with ATTRIBUTE_UNUSED.

        * sdbout.c: Include "tm_p.h".

        * toplev.c: Include "regs.h".

Tue Jan 11 11:37:58 2000  Mike Stump  <mrs@wrs.com>

        * unroll.c (unroll_loop): Add EH support.

2000-01-11  Kaveh R. Ghazi  <ghazi@caip.rutgers.edu>

        * pa-protos.h: New file.

        * pa.c: Include recog.h and tm_p.h.
        (compute_zdepwi_operands, compute_movstrsi_length,
        remove_useless_addtr_insns, store_reg, load_reg, set_reg_plus_d,
        find_addr_reg, import_milli): Add static prototypes.
        (pa_cpu_string, pa_arch_string): Constify a char*.
        (legitimize_pic_address): Pass argument `mode' to pic_label_operand.
        (read_only_operand): Add argument `mode'.
        (singlemove_string, output_move_double, output_fp_move_double,
        output_block_move, output_and, output_ior, output_ascii,
        remove_useless_addtr_insns, milli_names, output_mul_insn,
        output_div_insn, output_mod_insn, output_arg_descriptor,
        output_cbranch, output_bb, output_bvb, output_dbra, ,
        output_millicode_call, output_call, hppa_encode_label,
        output_parallel_movb, output_parallel_addb): Constify a char*.
        (hppa_va_start): Mark parameter `stdarg_p' with ATTRIBUTE_UNUSED.
        (output_parallel_addb): Remove extra arg to `constrain_operands'

        * pa.h:  Move all prototypes to pa-protos.h.
        (pa_cpu_string, pa_arch_string): Constify a char*.
        (LEGITIMIZE_ADDRESS): Call `symbolic_operand' with mode argument.

        * pa.md: Call `function_label_operand' with mode argument.
        Likewise for `read_only_operand'.
        Fix nesting of parens in call to `symbolic_operand'.

2000-01-11  Kaveh R. Ghazi  <ghazi@caip.rutgers.edu>

        * i860-protos.h: New file.

        * i860.c: Include tm_p.h.  Add static prototypes.  Fix compile
        time warnings.

        * i860.h: Move prototypes to i860-protos.h.  Fix compile time warnings.

        * i860.md: Likewise.

Tue Jan 11 18:59:35 MET 2000  Jan Hubicka <jh@suse.cz>

        * i386.md (movstrsi expander): Rewrite.
        (movstrsi_1 insn): Deleted.
        (strmovhi, strmovqi expander): New expanders.
        (movshi_1, movsqi_1, rep_movsi, rep_movqi): New patterns.
        * i386.c (x86_single_stringop): New global variable.
        * i386.h (x86_single_stringop): Declare.
        (TARGET_SINGLE_STRINGOP): New macro.

2000-01-11  Clinton Popetz  <cpopetz@cygnus.com>

        * config/mips/mips.c (mips_va_arg): For EABI, emit the queued
        integer vararg POSTINCREMENT before the destination of the jump
        for the hard fp case.
        (function_arg_pass_by_reference): Pass a copy of CUM to
        FUNCTION_ARG.

        * config/mips/mips.h (GO_IF_LEGITIMATE_ADDRESS): Move check
        for CONSTANT_ADDRESS_P above while loop for subreg.

2000-01-11  Clinton Popetz  <cpopetz@cygnus.com>

        * flow.c (propagate_block): When a prologue/epilogue insn
        is marked dead, unconditionally clear libcall_is_dead and
        insn_is_dead, and only dump rtl if warnings aren't being
        suppressed.

Tue Jan 11 16:26:47 MET 2000  Jan Hubicka <jh@suse.cz>

        * i386.c (ix86_attr_length_default): Handle TYPE_STR and TYPE_CLD.
        * i386.md (FIRST_PSEUDO_REGISTER): Set to 20.
        (FIXED_REGISTERS): Set dirflag as fixed.
        (CALL_USED_REGISTERS): Set dirflag as used.
        (REG_ALLOC_ORDER): Set dirflag as last one.
        (DIRFLAG_REG): New macro.
        (MD_ASM_CLOBBERS): Asm clobber dirflag for backward compatibility.
        (HI_REGISTER_NAMES): Add dirflag.
        (DEBUF_PRINT_REG): Handle dirflag.
        * i386.md (type attribute): New cld and str types.
        (length_opcode attribute): Set cld and str to 1.
        (memory attribute): Set str to unknown - it is not clear from the
        patterns.
        (pent_np function unit): Prefixed string operations takes 12 cycles
        minimally; cld takes 2 cycles.
        (ppro_uops attribute): Str is "many" and cld is "few".
        (ppro_p0 unit): Handle cld here.
        (k6_alux unit): Handle cld and str types.
        (k6_load unit): It is ocupied by str opcodes.
        (k6_store unit): It is ocupied by str opcodes.
        (athlon_decode): Str is vector decoded.
        (athlon_ieu): Handle str and cld.
        (cld pattern): New.
        (movstrsi, clrstr, cmpstr, strlen expander): Emit cld instruction
        (movstrsi_1, clrstrsi_1, cmpstrsi_1, strlensi_1,
        cmpstrsi_nz_1 insn): Do not output cld instruction

Tue Jan 11 06:14:39 2000  David Starner <dstarner98@aasaa.ofe.org>

        * gcc.texi (G++ and GCC): Add Java and Chill.
        (Bug Critera): Don't list languages.

        * gcc.texi (Incompatibilities): No longer claim most C compilers
        are K&R.

        * gcc.texi (G++ and GCC): Update other front-ends list.

Tue Jan 11 05:49:01 2000  Jeffrey A Law  (law@cygnus.com)

        * i386.c (ix86_expand_setcc): Fix typo.
        (ix86_expand_movcc): Similarly.

        * Band-aid until haifa's bitset implementation is nuked.
        * haifa-sched.c (extract_bitlst): New parameter for size of the
        bitset in bits.  All callers changed.  Avoid looking at undefined
        bits in the bitset.
        (edgeset_bitsize): New variable.
        (schedule_region): Initialize edgeset_bitsize.

2000-01-10  Kaveh R. Ghazi  <ghazi@caip.rutgers.edu>

        * Makefile.in (optabs.o): Depend on real.h
        (resource.o): Depend on insn-attr.h

        * builtins.c (result_vector): Wrap prototype in macro conditions
        governing definition and use.

        * c-common.c: Include tm_p.h.

        * c-lex.c: Likewise.

        * elfos.h: Constify a char*.

        * final.c (align_fuzz): Wrap prototype in macro HAVE_ATTR_length.
        (get_attr_length, shorten_branches, profile_after_prologue): Mark
        parameter with ATTRIBUTE_UNUSED.

        * fold-const.c (exact_real_inverse): Wrap variable `i' in
        CHECK_FLOAT_VALUE.

        * haifa-sched.c (schedule_insns): Mark parameter with
        ATTRIBUTE_UNUSED.

        * optabs.c: Include real.h.

        * real.h (ereal_atof): Add prototype arguments.

        * resource.c: Include insn-attr.h.

        * sdbout.c (sdbout_queue_anonymous_type,
        sdbout_dequeue_anonymous_types): Wrap in macro
        SDB_ALLOW_FORWARD_REFERENCES.
        (sdbout_init, sdbout_start_new_source_file): Mark parameter with
        ATTRIBUTE_UNUSED.

        * stmt.c (expand_return): Wrap variable `op0' in macro HAVE_return.

        * stupid.c: Include tm_p.h.

        * tree.c (real_value_from_int_cst): Mark parameter with
        ATTRIBUTE_UNUSED.

2000-01-10  Kaveh R. Ghazi  <ghazi@caip.rutgers.edu>

        * i960-protos.h: New file.

        * i960.c: Include tm_p.h.  Add static prototypes.  Fix compile
        time warnings.

        * i960.h: Move prototypes to i960-protos.h.  Fix compile time warnings.

2000-01-10  Alexandre Oliva  <oliva@lsd.ic.unicamp.br>

        * combine.c (expand_field_assignment): Do not discard SUBREGs
        while computing nonzero_bits.

2000-01-09  Nick Clifton  <nickc@cygnus.com>

        * config/arm/arm.c: Fix compile time warnings about signed vs
        unsigned constants.
        * config/arm/arm.h: Fix compile time warnings about signed vs
        unsigned constants.

2000-01-09  Philip Blundell  <philb@gnu.org>

        * config/arm/arm.c (output_return_instruction): Use `ldr' rather
        than `ldm' with only one register.
        * config/arm/arm.md (push_multi): Use `str' rather than `stm' with
        only one register.

        * config/arm/linux-gas.h (CLEAR_INSN_CACHE): Say that R0 is
        clobbered.

Sun Jan  9 17:50:23 2000  Hans-Peter Nilsson  <hp@axis.com>

        * config/ns32k/ns32k.md (load or push effective address): Operand 1
        must have SImode.

2000-01-09  Kaveh R. Ghazi  <ghazi@caip.rutgers.edu>

        * elfos.h (ASM_OUTPUT_LIMITED_STRING): Add parentheses around
        assignment used as truth value.

        * function.c (assign_temp): Mark parameter `dont_promote' with
        ATTRIBUTE_UNUSED.  Wrap variable `unsignedp' with macro
        PROMOTE_FOR_CALL_ONLY.

        * genrecog.c (write_subroutine): Mark variable `operands' with
        ATTRIBUTE_UNUSED.

        * optabs.c (prepare_cmp_insn): Mark parameter `align' with
        ATTRIBUTE_UNUSED.

        * sdbout.c (sdbout_init): Likewise for parameter `asm_file'.
        (sdbout_begin_block, sdbout_end_block): Likewise for `file'.

        * toplev.c (note_deferral_of_defined_inline_function): Likewise
        for `decl'.

2000-01-09  Michael Hayes  <m.hayes@elec.canterbury.ac.nz>

        * config/c4x.h: Tidy up comments.
        * config/c4x.c: Likewise.

Sun Jan  9 01:02:55 EST 2000  John Wehle  (john@feith.com)

        * fold-const.c (lshift_double, rshift_double): Handle
        shifting by 2 * HOST_BITS_PER_WIDE_INT correctly.

2000-01-08  Alexandre Oliva  <oliva@lsd.ic.unicamp.br>

        * toplev.c (rest_of_compilation): Initialize cse_not_expected as
        in prepare_function_start().

Sat Jan  8 12:12:46 2000  Nick Clifton  <nickc@cygnus.com>

        * config/v850/v850.c (expand_epilogue): Interrupt functions no
        longer allocate extra stack for function calls.

2000-01-08  Michael Hayes  <m.hayes@elec.canterbury.ac.nz>

        * config/c4x/c4x.md (*subqf3_set): Fix typo.

2000-01-08  Michael Hayes  <m.hayes@elec.canterbury.ac.nz>

        * config/c4x/c4x.h (CALLER_SAVE_PROFITABLE): Define as 0.

2000-01-07  David Edelsohn  <edelsohn@gnu.org>

        * rs6000.c (processor_target_table): Add power3 as alias for 630.
        * aix43.h: Revert Aug 2 change.
        (HAS_INIT_SECTION): Define, not visible yet.
        (LD_INIT_SWITCH): Define, not visible yet.
        * t-aix43 (MULTILIB_OPTIONS): Revert Aug 2 change.

        * glimits.h (__LONG_MAX__): Recognize 64-bit AIX too.

        * collect2.c (main): Expand ld2 size further.
        (export_object_lst): Cast assignment to avoid warning.
        (main, LD_INIT_SWITCH): Add AIX 4.2+ -binitfini support.
        (scan_prog_file, COFF): Do not collect initialization or
        finalization functions generated for entire shared object if
        init/fini support present.

2000-01-07  Nick Clifton  <nickc@cygnus.com>

        * config/elfos.h: Tidy up formatting of marcos.  Make sure
        that .section directives are always prefixed by a tab.

        * config/svr4.h: Add #include "elfos.h" and remove duplicate
        definitions.

2000-01-07  Matt Austern  <austern@sgi.com>

        * fold-const.c (real_hex_to_f): Remove duplicate declaration of
        expon.

Fri Jan  7 01:55:34 2000  Jeffrey A Law  (law@cygnus.com)

        * Makefile.in (crtend.o): Pass @inhibit_libc@ to compilation of
        crtstuff.c.
        (crtbegin.o, s-crtS): Likewise.

2000-01-06  Richard Henderson  <rth@cygnus.com>

        * alpha.md (adddi_2+1): Limit offset such that it will be
        loadable with a single ldah+lda pair.
        (adddi_2+2): Explicitly fail split if we can't make it work.

2000-01-06  Mumit Khan  <khan@xraylith.wisc.edu>

        * protoize.c: Conditionally include unistd.h.
        (IS_SAME_PATH_CHAR): New macro.
        (IS_SAME_PATH): New macro.
        (CPLUS_FILE_SUFFIX): New macro.
        (cplus_suffix): New static variable.
        (is_abspath): New static function.
        (in_system_include_dir): Handle DOS style pathnames.
        (file_could_be_converted): Likewise.
        (file_normally_convertible): Likewise.
        (directory_specified_p): Likewise.
        (file_excluded_p): Likewise.
        (abspath): Likewise.
        (shortpath): Likewise.
        (referenced_file_is_newer): Likewise.
        (save_def_or_dec): Likewise.
        (do_processing): Likewise.
        (main): Likewise.
        (edit_file): Likewise. Use rename instead of link.
        (rename_c_file): Likewise. Don't rename syscalls file.
        (munge_compile_params): Define null device for DOS based systems.
        (process_aux_info_file): Use binary mode if appliable.
        (edit_file): Likewise.
        * invoke.texi (Running Protoize): Document C++ suffixes used.

        * cccp.c: Delete PATH_SEPARATOR, DIR_SEPARATOR and
        IS_DIR_SEPARATOR macros.
        * collect2.c: Likewise.
        * cppinit.c: Likewise.
        * dwarf2out.c: Likewise.
        * gcc.c: Likewise.
        * gcov.c: Likewise.
        * prefix.c: Likewise.
        * rtl.c: Likewise.
        * toplev.c: Likewise.
        * system.h: And move to here.

        * prefix.c (update_path): Fix typo in variable name.

2000-01-06  Richard Henderson  <rth@cygnus.com>

        * flow.c (mark_set_1): Use loop_depth+1 as reference weight.
        (find_auto_inc, mark_used_regs, try_pre_increment_1): Likewise.
        (count_reg_sets_1, count_reg_references): Likewise.
        (flow_loops_level_compute): Start counting actual loop depth at 1.
        (flow_loops_find): Likewise.
        * local-alloc.c (update_equiv_regs): Likewise.
        * regclass.c (regclass): Re-instate Jan 4 0-based loop_depth change.

2000-01-06  Gabriel Dos Reis  <dosreis@cmla.ens-cachan.fr>

        * defaults.h (DWARF_FRAME_REGISTERS): if not defined, default to
        FIRST_PSEUDO_REGISTER
        * dwarf2out.c: Don't include frame.h
        * dwarfout.c: Likewise
        * Makefile.in (dwarfout.o, dwarf2out.o): Remove dependence on
        frame.h

Thu Jan  6 13:44:59 CET 2000  Jan Hubicka  <jh@suse.cz>

        * reg-stack.c (subst_stack_regs_pat): Handle correctly USEs of
        dead registers.

        * i386.c (movsf splitter): Fix typo in my last checkin.

2000-01-05  Nick Clifton  <nickc@cygnus.com>

        * varasm.c (IN_NAMED_SECTION): Allow targets to provide their
        own definition of this macro.
        (asm_emit_uninitialised): Invoke UNIQUE_SECTION if either
        flag_data_sections or UNIQUE_SECTION_P are true.

        * tm.texi (UNIQUE_SECTION): Document that it can be called for
        unitialised data decls.

        * config/i386/winnt.c (i386_pe_unique_section): Cope with
        being called for uninitialised data.

        * config/i386/interix.c (i386_pe_unique_section): Cope with
        being called for uninitialised data.

        * config/mips/elf.h (UNIQUE_SECTION): Cope with being called
        for uninitialised data.

        * config/mips/elf64.h (UNIQUE_SECTION): Cope with being called
        for uninitialised data.

        * config/mips/iri6gld.h (UNIQUE_SECTION): Cope with being called
        for uninitialised data.

        * config/arm/unknown-elf.h (IN_NAMED_SECTION): Define.
        (UNIQUE_SECTION_P): Always generate a unique section if
        flag_data_sections is true.
        (UNIQUE_SECTION): Also generate unique sections for
        uninitialised data.
        (ASM_OUTPUT_ALIGNED_BSS): Redefine to use named_section().
        (ASM_OUTPUT_ALIGNED_DECL_LOCAL): Redefine to use
        named_section().

2000-01-06  Michael Hayes  <m.hayes@elec.canterbury.ac.nz>

        * config/c4x/t-c4x (TARGET_LIBGCC2_CFLAGS): Don't redefine SF, DF,
        SI, or DI.

2000-01-06  Michael Hayes  <m.hayes@elec.canterbury.ac.nz>

        * config/c4x/c4x.md (udivqi3, divqi3): Delete.
        (umodqi3, modqi3, udivhi3, divhi3, umodhi3, modhi3, ffsqi2): Likewise.
        (*smulqi3_highpart_noclobber, *umulqi3_highpart_noclobber): New.
        (*lshrqi3_const_noclobber, *lshrqi3_nonconst_noclobber): Likewise.
        (*ashrqi3_const_noclobber, *ashrqi3_nonconst_noclobber): Likewise.

        * c4x.h (INIT_TARGET_OPTABS): Define to init libcalls.

2000-01-05 11:25 -0800  Zack Weinberg  <zack@rabi.columbia.edu>

        * c-decl.c (finish_enum): Simplify code to determine minimum and
        maximum values of the enum, and calculate the type.  Remove check
        for FUNCTION_DECLs in the values list, which cannot happen.  Replace
        the DECL_INITIAL of each enumeration constant with a copy converted
        to the enumeration type.  When updating variant types, don't bother
        updating the type itself.

        * c-typeck.c (build_binary_op): Simplify conditional expressions
        when weeding out spurious signed-unsigned warnings.  Add new
        spurious warning category: if the unsigned quantity is an enum
        and its maximum value fits in signed_type(result_type).  Update
        commentary.
        (build_conditional_expr): Warn here if one alternative is signed
        and the other is unsigned.

2000-01-05  Nick Clifton  <nickc@cygnus.com>

        * config/fr30/fr30.h: Remove extraneous comments.

2000-01-05  Bernd Schmidt  <bernds@cygnus.co.uk>

        * reload1.c (choose_reload_regs): When disabling a reload, also
        set reload_spill_index to -1.

2000-01-04  Joel Sherrill (joel@OARcorp.com>

        * configure.in (m68*-*-rtemscoff*): New target, formal name for
        old m68*-*-rtems*.
        (m68*-*-rtemself*): New target.
        (mips64orion-*-rtems*): Remove duplicate definition of tm_file.
        (sparc*-*-rtemsaout*): New target, formal name for old sparc*-*-rtems*.
        (sparc*-*-rtemself*): New target.
        (sparc*-*-rtems*): Now elf not a.out.
        * config/i386/rtems.h: Include config/rtems.h.
        * config/i386/rtemself.h: Include config/rtems.h.
        * config/i960/rtems.h: Include config/rtems.h.
        * config/m68k/rtems.h: Include config/rtems.h.
        * config/m68k/rtemself.h: Include config/rtems.h.
        * config/mips/rtems64.h: Include config/rtems.h.
        * config/pa/rtems.h: Include config/rtems.h.
        * config/rs6000/rtems.h: Include config/rtems.h.
        * config/sh/rtems.h: Include config/rtems.h.
        * config/sh/rtemself.h: Include config/rtems.h.
        * config/sparc/rtems.h: Include config/rtems.h.
        * config/sparc/rtemself.h: Include config/rtems.h

Tue Jan  4 23:59:26 2000  Denis Chertykov <denisc@overta.ru>

        * final.c (shorten_branches): Correctly compute length of
        asms without operands.

Tue Jan  4 22:55:41 2000  Steve Chamberlain <sac@pobox.com>

        * configure.in: Add pj target.
        * configure: Regenerate.
        * config/pj: New directory.
        * config/pj/lib1funcs.S: New file.
        * config/pj/linux.h: New file.
        * config/pj/pj.c: New file.
        * config/pj/pj.md: New file.
        * config/pj/pjl.h: New file.
        * config/pj/t-pj: New file.
        * config/pj/xm-pj.h: New file

Tue Jan  4 22:30:16 2000  Jeffrey A Law  (law@cygnus.com)

        * toplev.c (rest_of_compilation): Run shorten-branches before
        reg-stack for now.

2000-01-05  Michael Hayes  <m.hayes@elec.canterbury.ac.nz>

        * config/c4x/c4x.h (IS_XXX_REG, IS_XXX_REGNO): Swap behaviour of
        macros so that they're consistent with their names.
        * config/c4x/c4x.c (IS_XXX_REG, IS_XXX_REGNO): Likewise.
        * config/c4x/c4x.md (IS_XXX_REG, IS_XXX_REGNO): Likewise.

2000-01-05  Michael Hayes  <m.hayes@elec.canterbury.ac.nz>

        * config/c4x/c4x.md (*addqi3_noclobber_reload): Ensure that CC never
        modified inadvertently.

2000-01-04  Joel Sherrill <joel@OARcorp.com>

        * configure.in (v850*-*-rtems*): New target.
        * configure: Regenerate.
        * config/v850/rtems.h: New file.

2000-01-04  Mumit Khan  <khan@xraylith.wisc.edu>

        * gthr-win32.h (__gthread_active_p): Support Mingw MT runtime.
        (__gthread_key_create): Likewise.
        (__gthread_key_dtor):  Likewise.
        (__gthread_once): Fix logic.
        (__gthread_key_delete): Cast away constness.

        * i386/cygwin.h (SUBTARGET_SWITCHES): Add -mthreads option.
        * invoke.texi: Document.
        * i386/mingw32.h (CPP_SPEC): Use.
        (LIBGCC_SPEC): Likewise.
        * i386/crtdll.h (LIBGCC_SPEC): Likewise.

2000-01-04  David Edelsohn  <edelsohn@gnu.org>

        * rs6000/sysv4.h (ASM_OUTPUT_DEF): Undefine.
        (HANDLE_PRAGMA_PACK): Undefine.
        (SLOW_UNALIGNED_ACCESS): Define.

2000-01-04  David Edelsohn  <edelsohn@gnu.org>

        * expmed.c (SLOW_UNALIGNED_ACCESS): Add mode and align parameters
        to default definition.
        (store_bit_field): Call SLOW_UNALIGNED_ACCESS with mode and alignment.
        (store_fixed_bit_field): Call macro with word_mode and alignment.
        (extract_bit_field): Call macro with relevant mode and alignment.
        * expr.c (SLOW_UNALIGNED_ACCESS): Add mode and align parameters
        to default definition.
        (move_by_pieces): Call SLOW_UNALIGNED_ACCESS with word_mode
        and alignment.
        (move_by_pieces_ninsns): Likewise.
        (clear_by_pieces): Likewise.
        (emit_push_insn): Likewise.
        (store_field): Call macro with relevant mode and alignment.
        (expand_expr): Likewise.
        (expand_expr_unaligned): Likewise.

        * rs6000.h (HANDLE_PRAGMA_PACK): Define.
        (SLOW_UNALIGNED_ACCESS): Define.
        (CASE_VECTOR_MODE): Always use 32-bit offsets.
        (ASM_FILE_END): Generate 64-bit symbol in 64-bit mode.
        (EXTRA_SECTION_FUNCTIONS): Indent .csect pseudo-op.
        (toc_section): Likewise and .toc pseudo-op.
        (ASM_DECLARE_FUNCTION): Likewise.  Align text more strictly in
        64-bit mode.
        (TEXT_SECTION_ASM_OP): Likewise.
        (ASM_OUTPUT_ADD_VEC_ELT, ASM_OUTPUT_ADDR_DIFF_ELT): Always use
        32-bit offsets.

        * a29k.h (SLOW_UNALIGNED_ACCESS): Add MODE and ALIGN parameters.
        * alpha.h (SLOW_UNALIGNED_ACCESS): Likewise.
        * arm/thumb.h (SLOW_UNALIGNED_ACCESS): Likewise.
        * gmicro.h (SLOW_UNALIGNED_ACCESS): Likewise.
        * fr30.h (SLOW_UNALIGNED_ACCESS): Likewise.

Tue Jan  4 11:44:13 2000  Jeffrey A Law  (law@cygnus.com)

        * regclass.c: Revert my Jan 4 change to loop cost computation.

Tue Jan  4 19:22:39 MET 2000  Jan Hubicka  <hubicka@freesoft.cz>

        * regclass.c (regclass): Do not obey REG_N_REFS in non-optimizing
        compilation.

2000-01-04  Stan Cox  <scox@cygnus.com>

        * haifa-sched.c (build_control_flow): Change unreachable simple
        loop test to check if current block has only one predecessor.
        (find_rgns): Initialize degree.  Use dest as degree index, not src.

2000-01-04  Kaveh R. Ghazi  <ghazi@caip.rutgers.edu>

        * builtins.c (expand_builtin_strlen): Initialize variable `icode'.

        * calls.c (expand_call): Likewise for
        `old_stack_arg_under_construction'.

        * cpphash.c (macroexpand): Likewise for `args' and `rest_zero'.

        * function.c (pad_to_arg_alignment): Likewise for `save_var' and
        `save_constant'.

        * gcc.c (execute): Likewise for `ut' and `st'.

        * genattrtab.c (attr_rtx): Likewise for `rt_val'.

        * genopinit.c (gen_insn): Likewise for `m1', `m2' and `op'.

        * jump.c (jump_optimize_1): Likewise for `temp2'.

        * local-alloc.c (block_alloc): Likewise for `r1'.

        * loop.c (recombine_givs): Likewise for `life_start' and `life_end'.

        * reg-stack.c (check_asm_stack_operands): Likewise for `clobber_reg'.
        (subst_asm_stack_regs): Likewise for `clobber_reg' and `clobber_loc'.

        * regmove.c (fixup_match_1): Likewise for `insn_const', `dst_node'
        and `set2'.

        * reload.c (find_reloads): Likewise for `goal_alternative_number'
        and `goal_earlyclobber'.

        * scan-decls.c (scan_decls): Likewise for `prev_id_end'.

        * sdbout.c (sdbout_one_type): Likewise for `member_scl'.

        * stupid.c (stupid_life_analysis): Likewise for `chain'.

        * unroll.c (copy_loop_body): Likewise for `copy'.

        * varasm.c (output_constructor): Likewise for `byte'.

Tue Jan  4 15:34:34 MET 2000  Jan Hubicka  <hubicka@freesoft.cz>

        * i386.c (ix86_expand_move): Allow pushes of memory, offload to memory
        all FP constants for constant->reg moves.
        (ix86_split_to_parts): Try to convert memory address into immediate
        when available in the constant pool.
        * i386.h (PREFERRED_RELOAD_CLASS): Allow CONST_DOUBLE->integer reg
        moves.
        (LEGITIMATE_CONSTANT_P): Return 1.
        * i386.md (pushsf): New splitter to convert constant pool memory
        reference to immediate.
        (mov?f): Likewise; do not allow CONST_DOUBLE for reg moves before
        reload.

2000-01-04  Bernd Schmidt  <bernds@cygnus.co.uk>

        * i386.md (ashlsi3_cmpno): Don't accept variables shifts.
        (ashlhi3_cmpno, ashlqi3_cmpno, ashrsi3_cmpno, ashrhi3_cmpno,
        ashrqi3_cmpno, lshrsi3_cmpno, lshrhi3_cmpno, lshrqi3_cmpno): Likewise.
        (rotlsi3_cmpno, rotlhi3_cmpno, rotlqi3_cmpno, rotrsi3_cmpno,
        rotrhi3_cmpno, rotrqi3_cmpno): Likewise.

2000-01-04  Martin von Löwis  <loewis@informatik.hu-berlin.de>

        * ginclude/stdbool.h:  Support compilation as C++.

Tue Jan  4 01:35:13 2000  J"orn Rennecke <amylaar@cygnus.co.uk>

        * fold-const.c (make_range): Don't try to reverse an unbounded range.

Tue Jan  4 00:18:46 2000  Jeffrey A Law  (law@cygnus.com)

        * regclass.c (regclass): Properly compute loop_cost.  Adjust
        comments.

        * regclass.c: Fix minor whitespace problems.

2000-01-03  Anthony Green  <green@cygnus.com>

        * config/i386/i386.md (builtin_setjmp_receiver): New pattern.
        Restore the pic register if required.

2000-01-03  Ulrich Drepper  <drepper@cygnus.com>

        * c-common.c (format_char_info): Update comment.
        (check_format_info): Recognize 'z' modifier in the same way 'Z'
        was recognized.  Emit warning for formats new in ISO C99 only
        if flag_isoc9x is not set.

Mon Jan  3 12:59:54 2000  Mark P. Mitchell  <mark@codesourcery.com>

        * config/mips/iris6gld.h: Fix typo in -mabi=n32 specs.

Mon Jan  3 15:33:37 MET 2000  Jan Hubicka  <hubicka@freesoft.cz>

        * combine.c (expand_compound_operation): Do not convert ZERO_EXTEND to
        SIGN_EXTEND, convert SIGN_EXTEND to ZERO_EXTEND.
        (make_compound_operation): Choose cheaper alternative between
        ZERO_EXTEND and SIGN_EXTEND when sign bit is not set.

        * regclass.c (op_costs): Remove global variable.
        (record_reg_classes): New parameter "op_costs" and "reg_pref".
        (record_operand_costs): Break out from ...
        (scan_one_insn): ... here.
        (dump_regclass): Make dumps nicer.
        (regclass): Dump preferrences choosed and changes done during passes.

2000-01-03  Jakub Jelinek  <jakub@redhat.com>

        * config/sparc/sparc.c (gen_df_reg): Fix for 32bit SPARC.

2000-01-03  Jakub Jelinek  <jakub@redhat.com>

        * config/sparc/sparc.c (gen_df_reg): New function.
        * config/sparc/sparc-protos.h (gen_df_reg): Add prototype.
        * config/sparc/sparc.md (movtf_no_e_insn_sp64+1,
        movtf_no_e_insn_sp64+2, movtf_no_e_insn_sp64+3, movtf_cc_sp64+1,
        movtf_cc_reg_sp64+1): Use it.

2000-01-02  Mark Mitchell  <mark@codesourcery.com>

        * integrate.c (copy_decl_for_inlining): Clear TREE_ADDRESSABLE on
        copied LABEL_DECLs.

Mon Jan  3 02:54:40 2000  Hans-Peter Nilsson  <hp@bitrange.com>

        * config/i386/i386.c (ix86_expand_unary_operator): Function
        definition made void.
        (ix86_expand_binary_operator): Update outdated preceding comment.
        * config/i386/i386-protos.h (ix86_expand_unary_operator): Update
        prototype.

        * config/i386/i386.c (override_options): Fix option-name typo.

2000-01-02  Mark Mitchell  <mark@codesourcery.com>

        * system.h (CEIL): Define.
        * builtins.c (CEIL): Remove.
        * expmed.c (CEIL): Likewise.
        * expr.c (CEIL): Likewise.
        * stor-layout.c (CEIL): Likewise.

2000-01-02  Franz Sirl <Franz.Sirl-kernel@lauterbach.com>

        * expr.c (store_constructor_field): Fix typo introduced with last
        gcc2 merge.

2000-01-01  Mark Mitchell  <mark@codesourcery.com>

        * tree.h (BINFO_N_BASETYPES): New macro.

2000-01-01  Bernd Schmidt  <bernds@cygnus.co.uk>

        * expmed.c (emit_store_flag): Prevent losing a pending stack
        adjust the same way we prevent losing queued increments.

See ChangeLog.2 for earlier changes.