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

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

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

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

        * 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-commom.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.