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

2007-03-01  Zdenek Dvorak  <dvorakz@suse.cz>

        * tree-ssa-loop-prefetch.c (determine_unroll_factor):  Bound the unroll
        factor by the estimated number of iterations.
        (loop_prefetch_arrays): Do not prefetch in loops that iterate less than
        prefetch latency.

2007-03-01  Richard Henderson  <rth@redhat.com>

        * expr.c (emit_move_complex_push): Export.
        (emit_move_complex_parts): Split out from ...
        (emit_move_complex): ... here.
        * expr.h (emit_move_complex_push, emit_move_complex_parts): Declare.
        * config/i386/i386.md (movcdi): New.

2007-03-01  Uros Bizjak  <ubizjak@gmail.com>

        * config/i386/i386.c (ix86_modes_tieable_p): Fix typo, use also
        size of mode1 to check for tieable modes in MMX case.

2007-03-01  Richard Sandiford  <richard@codesourcery.com>

        * Makefile.in (rtlanal.o): Depend on tree.h.
        * rtl.h (offset_within_section_p, split_const): Declare.
        * rtlanal.c: Include tree.h.
        (offset_within_block_p): New function, taken from
        mips_offset_within_object_p.
        (split_const): New function, taken from mips_split_const.
        * config/m68k/m68k-protos.h (m68k_illegitimate_symbolic_constant_p):
        Declare.
        * config/m68k/m68k.h (M68K_OFFSETS_MUST_BE_WITHIN_SECTIONS_P): Define.
        (CONSTANT_ADDRESS_P): Only accept legitimate constants.
        (LEGITIMATE_CONSTANT_P): Check m68k_illegitimate_symbolic_constant_p.
        * config/m68k/m68k.c (TARGET_CANNOT_FORCE_CONST_MEM): Define.
        (m68k_illegitimate_symbolic_constant_p): New function.
        * config/m68k/m68k.md (movsi): Remove misleading predicates.
        If M68K_OFFSETS_MUST_BE_WITHIN_SECTIONS_P and the source is a
        symbolic constant that might be outside the symbol's section,
        move the symbol first and then add the offset.
        * config/m68k/uclinux.h (M68K_OFFSETS_MUST_BE_WITHIN_SECTIONS_P):
        Override.
        * config/mips/mips.c (mips_split_const): Delete.
        (mips_offset_within_object_p): Delete.
        (mips_symbolic_constant_p): Use offset_within_section_p and
        split_const instead of mips_offset_within_object_p and
        mips_split_const.
        (mips_cannot_force_const_mem, mips_const_insns, mips_unspec_address)
        (mips_legitimize_const_move, print_operand_reloc)
        (mips_dangerous_for_la25_p): Use split_const instead of
        mips_split_const.

2007-02-28  Eric Christopher  <echristo@apple.com>

        * Makefile.in (install-include-dir): Don't rm -rf include.

2007-02-28  Richard Guenther  <rguenther@suse.de>

        PR middle-end/30364
        * fold-const.c (fold_binary): Do not associate expressions
        with more than one variable for integer types that do not wrap.

2007-02-28  Sandra Loosemore  <sandra@codesourcery.com>

        * builtins.c (fold_builtin_call_list, fold_builtin_call_valist):
        Delete, and replace with...
        (fold_builtin_call_array): This.  Update callers to use it.
        * fold-const.c (fold_build_call_list): Delete, and replace with...
        (fold_build_call_array): This.
        (fold_build_call_list_initializer): Delete, and replace with...
        (fold_build_call_array_initializer): This.
        * tree.h: Update declarations to reflect above changes.

        * c-typeck.c (build_function_call): Store converted arguments
        in a stack-allocated array instead of building a list.
        (convert_arguments): Store arguments in the array passed in as an
        argument, and return the actual number of arguments.
        * c-format.c: (check_function_format): Pass arguments in an
        array instead of a list.
        * c-common.c (check_function_nonnull): Likewise.
        (check_function_sentinel): Likewise.
        (check_function_arguments): Likewise.
        * c-common.h: Update declarations to reflect above changes.

2007-02-28  Jan Hubicka  <jh@suse.cz>

        * predict.def (PRED_TREE_EARLY_RETURN, PRED_CONST_RETURN,
        PRED_NEGATIVE_RETURN): Update outcomes.

2007-02-28  Bernd Schmidt  <bernd.schmidt@analog.com>

        * calls.c (emit_library_call_value_1): Handle partial registers
        correctly when building up CALL_INSN_FUNCTION_USAGE.

2007-02-27  John David Anglin  <dave.anglin@nrc-cnrc.gc.ca>

        * pa/predicates.md (move_src_operand): Allow zero for mode.
        * pa/pa.md: Fix constraints for zero CONST_DOUBLE in 64-bit DFmode
        move pattern.

2007-02-27  Uros Bizjak  <ubizjak@gmail.com>

        PR target/30970
        * config/i386/sse.md (*mov<mode>_internal, *movv4sf_internal,
        *movv2df_internal): Enable pattern only for valid operand
        combinations.
        * config/i386/i386.c (ix86_modes_tieable_p): For SSE registers,
        tie only 128bit modes. For MMX registers, tie only 64bit modes.

2007-02-27  Mike Stump  <mrs@apple.com>

        * config/darwin-crt3.c: Avoid compilation when compiling for a
        kext multilib.

2007-02-27  Joseph Myers  <joseph@codesourcery.com>

        * Makefile.in (PREPROCESSOR_DEFINES, test-protoize-simple): Define
        FIXED_INCLUDE_DIR.
        (stmp-int-hdrs, stmp-fixinc, install-headers): Use include-fixed
        for fixed headers and limits.h.
        (install-include-dir, install-headers-tar, install-headers-cpio,
        install-headers-cp, real-install-headers-tar,
        real-install-headers-cpio, real-install-headers-cp): Handle
        include-fixed as well as include.
        (install-mkheaders): Don't install files that go only in include
        not include-fixed.
        * cppdefault.c (cpp_include_defaults): Separate FIXED_INCLUDE_DIR
        from GCC_INCLUDE_DIR.
        * gcc.c (process_command): Remove special -BstageN/ handling.
        (do_spec_1): Add include-fixed directories.

2007-02-27  Bernd Schmidt  <bernd.schmidt@analog.com>

        * config/bfin/t-bfin-elf (LIB1ASMFUNCS): Add _umulsi3_highpart and
        _smulsi3_highpart.
        * config/bfin/lib1funcs.asm (___umulsi3_highpart, ___smulsi3_highpart):
        New functions.
        * config/bfin/bfin.md (smulsi3_highpart, umulsi3_highpart): New
        patterns.

2007-02-27  Mark Mitchell  <mark@codesourcery.com>

        * c-common.c (get_priority): Add check for
        SUPPORTS_INIT_PRIORITY.

2007-02-27  Bernd Schmidt  <bernd.schmidt@analog.com>

        * config/bfin/bfin.md (doloop_end): FAIL if counter reg isn't SImode.

        * config/bfin/bfin.c: Include "cfglayout.h".
        (MAX_LSETUP_DISTANCE): New macro.
        (struct loop_info): New members incoming, incoming_src and
        incoming_dest.  Delete member predecessor.
        (length_for_loop): New function.
        (bfin_optimize_loop): Handle more different loop structures.
        (bfin_discover_loop): Rework detection of predecessor blocks by
        examining incoming edges.
        (bfin_discover_loops, bfin_free_loops): New functions, broken out of
        bfin_reorg_loops.
        (bfin_reorder_loops): New function.
        (bfin_reorg_loops): Use these three new functions.

        * config/bfin/bfin.h (enum reg_class, REG_CLASS_NAMES,
        REG_CLASS_CONTENTS): Add D0REGS through D7REGS.
        (CONSTRAINT_LEN): Add entry for 'q'.
        (REG_CLASS_FROM_CONSTRAINT): Renamed from REG_CLASS_FROM_LETTER.
        Add 'q' constraints.
        (REGNO_REG_CLASS): For R0 through R7, return corresponding regclass.
        (CLASS_LIKELY_SPILLED_P): True for R0, R1 and R2.

        * config/bfin/bfin.md (add_with_carry): New pattern.
        (s_or_u, su_optab, su_modifier): New code macros/attrs.
        (<su_optab>hisi_ll, <su_optab>hisi_lh, <su_optab>hisi_hl,
        <su_optab>hisi_hh): Renamed from mulhisi_xx patterns; macroized to
        support unsigned multiplies too.  Removed incorrect commutativity from
        operand 1 constraint where appropriate.
        (usmulhisi_ull, usmulhisi_ulh, usmulhisi_uhl, usmulhisi_uhh): New
        patterns.
        (<su_optab>hisi_ll_lh, <su_optab>hisi_ll_hl, <su_optab>hisi_ll_hh,
        <su_optab>hisi_lh_hl, <su_optab>hisi_lh_hh, <su_optab>hisi_hl_hh):
        New patterns.
        (usmulhisi_ll_lul, usmulhisi_ll_luh, usmulhisi_ll_hul,
        usmulhisi_ll_huh, usmulhisi_lh_lul, usmulhisi_lh_luh, usmulhisi_lh_hul,
        usmulhisi_lh_huh, usmulhisi_hl_lul, usmulhisi_hl_luh, usmulhisi_hl_hul,
        usmulhisi_hl_huh, usmulhisi_hh_lul, usmulhisi_hh_luh, usmulhisi_hh_hul,
        usmulhisi_hh_huh): New patterns.

        * config/bfin/bfin.md (ssashiftv2hi3, ssashifthi3, lshiftv2hi3,
        lshifthi3): Fix output template to use half reg for operand 2.

        * config/bfin/bfin.c (bfin_output_mi_thunk): Use R3 as scratch reg
        instead of R2.

        * config/bfin/bfin.md (rotl16, rotlsi3, rotrsi3): New patterns.

2007-02-27  Andreas Schwab  <schwab@suse.de>

        * Makefile.in (TEXI_GCCINSTALL_FILES): Add gcc-common.texi.

2007-02-27  Jan Hubicka  <jh@suse.cz>

        * predict.c (last_basic_block_p): Remove.
        (tree_estimate_probability): Update return heuristic for commonized
        return blocks.

2007-02-26  Brooks Moses  <brooks.moses@codesourcery.com>

        * Makefile.in (TEXI_GCCINSTALL_FILES): Add gcc-vers.texi dependency.

2007-02-26  Brooks Moses  <brooks.moses@codesourcery.com>

        * doc/include/gcc-common.texi (versionsubtitle): New macro.
        * doc/cpp.texi: Standardize title page.
        * doc/cppinternals.texi: Likewise.
        * doc/gcc.texi: Standardize title page, remove version number
        from copyright page.
        * doc/gccint.texi: Likewise.
        * doc/install.texi: Standardize title page, add table of
        contents.

2007-02-26  Jan Hubicka  <jh@suse.cz>

        * predict.def: Set outcomes according to more recent results.
        (PRED_LOOP_CONDITION, PRED_LOOP_PRECONDITIONING, PRED_LOOP_HEADER):
        Remove dead predictors.
        * predict.c (return_prediction): Fix pasto.

2007-02-27  Bernd Schmidt  <bernd.schmidt@analog.com>

        * loop-iv.c (simplify_using_initial_values): Fix oversight in previous
        change; avoid a memory leak when returning early.

2007-02-26  Mark Mitchell  <mark@codesourcery.com>

        * c-decl.c (static_ctors): Move to c-common.c.
        (static_dtors): Likewise.
        (finish_function): Use c_record_cdtor_fn.
        (build_cdtor): Move to c-common.c.
        (c_write_global_declarations): Use c_build_cdtor_fns.
        * c-common.h (static_ctors): Declare.
        (static_dtors): Likewise.
        (c_record_cdtor_fn): Likewise.
        (c_build_cdtor_fns): Likewise.
        * c-common.c (static_ctors): New variable.
        (static_dtors): Likewise.
        (c_record_cdtor_fn): New function.
        (build_cdtor): Move from c-decl.c
        (c_build_cdtor_fns): New function.

        * output.h (assemble_addr_to_section): Declare.
        (get_cdtor_priority_section): Likewise.
        * varasm.c (assemble_addr_to_section): New function.
        (get_cdtor_priority_section): Likewise.
        (default_named_section_asm_out_destructor): Use them.
        (destor_dtor_section_asm_out_destructor): Likewise.
        (default_named_section_asm_out_constructor): Likewise.
        (default_ctor_section_asm_out_constructor): Likewise.
        * config.gcc (*-*-vxworks*): Include vxworks.o.
        * config/t-vxworks (vxworks.o): New target.
        * config/vxworks.h (ALWAYS_NUMBER_CTORS_SECTIONS): Remove.
        (TARGET_ASM_CONSTRUCTOR): Define.
        (TARGET_ASM_DESTRUCTOR): Likewise.
        (vxworks_asm_out_constructor): Declare.
        (vxworks_asm_out_destructor): Likewise.

        * c-common.c (get_priority): Check that we have not just an
        INTEGER_CST, but an integer constant with integeral type.

2007-02-25  Uros Bizjak  <ubizjak@gmail.com>

        PR tree-optimization/30938
        * tree-vect-transform.c (vectorizable_call): Fix off-by-one error:
        use &dt[nargs-1] instead of &dt[nargs] in the call to
        vect_is_simple_use().

2007-02-25  Ulrich Weigand  <uweigand@de.ibm.com>

        * reload.c (find_reloads_address_1): Handle PLUS expressions resulting
        from register elimination as PRE_MODIFY / POST_MODIFY increments.
        Do not attempt to handle MEM inside auto-inc expressions.
        * reload1.c (eliminate_regs_1): Do not attempt to handle elimination
        of a register modified by an auto-inc expression.  However, do handle
        elimination of a register used as PRE_MODIFY / POST_MODIFY increment.
        (elimination_effects): Prohibit elimination of a register modified
        by an auto-inc expression.  Disable register elimination rules whose
        target register is modified by an auto-inc expression with variable
        increment.

2007-02-25  Zdenek Dvorak  <dvorakz@suse.cz>

        * tree-ssa-loop-niter.c (compute_estimated_nb_iterations): Fix
        off-by-one error.
        (array_at_struct_end_p): New function.
        (idx_infer_loop_bounds): Use it.
        (estimate_numbers_of_iterations_loop): Export.
        * predict.c (predict_loops): Use estimated_loop_iterations_int.
        Do not use PRED_LOOP_EXIT on exits predicted by # of iterations.
        (tree_estimate_probability): Call record_loop_exits.
        * tree-data-ref.c (get_number_of_iters_for_loop): Replaced by ...
        (estimated_loop_iterations, estimated_loop_iterations_int,
        estimated_loop_iterations_tree): New functions.
        (analyze_siv_subscript_cst_affine,
        compute_overlap_steps_for_affine_1_2,
        analyze_subscript_affine_affine): Use estimated_loop_iterations_int.
        (analyze_miv_subscript): Use estimated_loop_iterations_tree.
        * predict.def (PRED_LOOP_ITERATIONS): Update comment.
        (PRED_LOOP_ITERATIONS_GUESSED): New.
        * cfgloop.c (record_loop_exits): Do nothing if there are no loops.
        * cfgloop.h (estimate_numbers_of_iterations_loop,
        estimated_loop_iterations_int): Declare.

2007-02-25  Mark Mitchell  <mark@codesourcery.com>

        * doc/extend.texi: Document optional priority argument to
        constructors and destructors.
        * tree.c (init_priority_for_decl): Adjust GTY markers.
        (init_ttree): Use priority-info hash functions for
        init_priority_for_decl.
        (tree_map_eq): Rename to ...
        (tree_map_base_eq): ... this.
        (tree_map_marked_p): Rename to ...
        (tree_map_base_marked_p): ... this.
        (tree_map_base_hash): New function.
        (decl_init_priority_lookup): Rework.
        (decl_fini_priority_lookup): New function.
        (decl_priority_info): New function.
        (decl_init_priority_insert): Use it.
        (decl_fini_priority_insert): Likewise.
        (decl_restrict_base_lookup): Adjust for refactoring of tree_map
        hierarchy.
        (decl_restrict_base_insert): Likewise.
        (decl_debug_expr_insert): Likewise.
        (decl_value_expr_lookup): Likewise.
        (decl_value_expr_insert): Likewise.
        * tree.h (priority_type): New type.
        (decl_init_priority_lookup): Use priority_type.
        (decl_fini_priority_lookup): New function.
        (decl_init_priority_insert): Use priority_type.
        (decl_fini_priority_insert): New function.
        (DECL_HAS_INIT_PRIORITY): Tweak comments.
        (DECL_INIT_PRIORITY): Likewise.
        (SET_DECL_INIT_PRIORITY): Add comment.
        (DECL_FINI_PRIORITY): New macro.
        (SET_DECL_FINI_PRIORITY): Likewise.
        (DEFAULT_INIT_PRIORITY): Document.
        (MAX_INIT_PRIORITY): Likewise.
        (MAX_RESERVED_INIT_PRIORITY): Likewise.
        (tree_map_base): New type.
        (tree_map_base_eq): New function.
        (tree_map_base_hash): Likewise.
        (tree_map_base_marked_p): Likewise.
        (tree_map): Inherit from tree_map_base.
        (tree_map_eq): Make it a macro.
        (tree_map_marked_p): Likewise.
        (tree_int_map): Inherit from tree_map_base.
        (tree_int_map_eq): Make it a macro.
        (tree_int_map_hash): Likewise.
        (tree_int_map_marked_p): Likewise.
        (tree_priority_map): New type.
        (tree_priority_map_eq): New macro.
        (tree_priority_map_hash): Likewise.
        (tree_priority_map_marked_p): Likewise.
        * varasm.c (emults_decl): Adjust for refactoring of tree_map
        hierarchy.
        (emutls_common_1): Likewise.
        * lambda-code.c (replace_uses_equiv_to_x_with_y): Likewise.
        * tree-ssa-structalias.c (heapvar_lookup): Adjust for refactoring
        of tree_map hierarchy.
        * tree-cfg.c (move_stmt_r): Likewise.
        (new_label_mapper): Likewise.
        * c-tree.h (c_expand_body): Move to ...
        * c-common.h (c_expand_body): ... here.
        * c-decl.c (c_expand_body): Move to ...
        * c-common.c (c_expand_body): ... here.
        (c_common_attribute_table): Allow 1 argument for the constructor
        and destructor attributes.
        (get_priority): New function.
        (handle_constructor_attribute): Set DECL_INIT_PRIORITY.
        (handle_destructor_attribute): Set DECL_FINI_PRIORITY.

2007-02-24  Jan Hubicka  <jh@suse.cz>

        PR middle-end/30509
        * tree-inline.c (copy_bb): Produce exact copy of EH info when copying for inlining.

2007-02-24  Uros Bizjak  <ubizjak@gmail.com>
            Jan Hubicka  <jh@suse.cz>

        PR target/30778
        * i386.c (counter_mode): New function.
        (expand_set_or_movmem_via_loop): Use it.
        (expand_movmem_epilogue): Likewise; fix pasto.
        (ix86_expand_movmem): Do emit guard even for constant counts.
        (ix86_expand_setmem): Likewise.

2007-02-25  Nick Clifton  <nickc@redhat.com>

        * config/frv/frv.h (ASM_OUTPUT_CASE_LABEL): Delete.
        (JUMP_TABLES_IN_TEXT_SECTION): Define.

2007-02-24  Uros Bizjak  <ubizjak@gmail.com>

        PR target/30770
        * config/i386/i386.md (expand_movmem_epilogue): Fix typo, mask
        count argument with 0x10, not with 0x16.
        (expand_setmem_epilogue): Ditto.

2007-02-24  Mike Stump  <mrs@apple.com>

        * config/i386/i386.c (output_pic_addr_const): Stubify optimized
        symbols.

2007-02-24  Richard Guenther  <rguenther@suse.de>

        PR middle-end/30951
        * fold-const.c (fold_binary): Fold x +- CST op x for
        EQ_EXPR and NE_EXPR.

2007-02-24  John David Anglin  <dave.anglin@nrc-cnrc.gc.ca>

        * pa.md (muldi3): Force subregs to registers in 64-bit expander.

2007-02-24  Jan Hubicka  <jh@suse.cz>

        * cgraphunit.c (decide_is_function_needed): Honor
        -fkeep-inline-functions.

2007-02-24  Kaveh R. Ghazi  <ghazi@caip.rutgers.edu>

        * builtins.c (fold_builtin_modf): New.
        (fold_builtin_2): Use it.

2007-02-24  Bernd Schmidt  <bernd.schmidt@analog.com>

        * loop-iv.c (implies_p): Detect additional cases where A implies B.
        (determine_max_iter): Take additional LOOP arg; all callers changed.
        Lose broken logic dealing with PLUS.  Try to limit the upper bound by
        one using simplifications.
        (simplify_using_initial_values): Return if the expression becomes
        invalid due to altered regs.

2007-02-23  DJ Delorie  <dj@redhat.com>

        * doc/tm.h (BIGGEST_ALIGNMENT): Clarify the purpose of this macro.

2007-02-23  Mike Stump  <mrs@apple.com>

        * tlink.c (scan_linker_output): Parse linker messages from
        darwin9's linker better.

2007-02-23  Steve Ellcey  <sje@cup.hp.com>

        PR debug/29614
        * varpool.c (varpool_assemble_pending_decls):  Set
        varpool_last_needed_node to null.

2007-02-23  DJ Delorie  <dj@redhat.com>

        * config/i386/i386.c (ix86_data_alignment): Don't specify an
        alignment bigger than the object file can handle.

2007-02-23  Uros Bizjak  <ubizjak@gmail.com>

        PR target/30825
        * config/i386/i386.md (*movdi_1_rex64, zero_extendsidi2_32,
        zero_extendsidi2_rex64): Penalize MMX register<->memory moves.
        (*movsf_1): Penalize MMX moves.

2007-02-23  Bernd Schmidt  <bernd.schmidt@analog.com>

        * config/bfin/bfin.md (doloop_end): Fail for loops that can iterate
        2^32-1 or more times unless flag_unsafe_loop_optimizations.

        * loop-iv.c (determine_max_iter): Moved in front of its sole user.

2007-02-23  Kaveh R. Ghazi  <ghazi@caip.rutgers.edu>

        * builtins.c (fold_builtin_logb, fold_builtin_significand): New.
        (fold_builtin_1): Use them.
        * fold-const.c (tree_expr_nonnegative_warnv_p): Handle
        BUILT_IN_SIGNIFICAND.

2007-02-23  H.J. Lu  <hongjiu.lu@intel.com>

        * config/i386/i386.c (bdesc_1arg): Initialize
        IX86_BUILTIN_MOVSHDUP and IX86_BUILTIN_MOVSLDUP with
        "__builtin_ia32_movshdup" and "__builtin_ia32_movsldup".
        (ix86_init_mmx_sse_builtins): Remove IX86_BUILTIN_MOVSHDUP
        and IX86_BUILTIN_MOVSLDUP.

2007-02-22  Paolo Bonzini  <bonzini@gnu.org>

        PR rtl-optimization/30841
        * fwprop.c (propagate_rtx_1): Accept a VOIDmode replacement address.

2007-02-22  Kaveh R. Ghazi  <ghazi@caip.rutgers.edu>

        * builtins.c (fold_builtin_frexp): New.
        (fold_builtin_2): Use it.

2007-02-22  Mark Mitchell  <mark@codesourcery.com>

        * doc/invoke.texi (Spec Files): Document getenv spec function.

        * gcc.c (getenv_spec_function): New function.
        (static_spec_functions): Add it.
        * config/vxworks.h (VXWORKS_TARGET_DIR): Remove.
        (VXWORKS_ADDITIONAL_CPP_SPEC): Use getenv to find the VxWorks
        header files.

2007-02-22  Michael Matz  <matz@suse.de

        PR c++/29433
        * dwarf2out.c (add_AT_string): Call ggc_strdup once per string.
        (type_tag): Use lang_hooks.dwarf_name instead of DECL_NAME.

2007-02-22  Ian Lance Taylor  <iant@google.com>

        PR debug/30898
        * dwarf2out.c (concatn_mem_loc_descriptor): New static function.
        (mem_loc_descriptor): Call it.

2007-02-22  Zdenek Dvorak  <dvorakz@suse.cz>
            Ira Rosen  <irar@il.ibm.com>

        * tree-data-ref.c (ptr_ptr_may_alias_p): Take alias sets into account.

2007-02-22  Ira Rosen  <irar@il.ibm.com>

        PR tree-optimization/30843
        * tree-vect-transform.c (vect_transform_loop): Remove strided scalar
        stores only after all the group is vectorized.

2007-02-22  Dorit Nuzman  <dorit@il.ibm.com>

        PR tree-optimization/30858
        * tree-vectorizer.c (vect_is_simple_reduction): Check that the stmts
        in the reduction cycle have a single use in the loop.
        * tree-vectorizer.h (relevant): Add documentation.

2007-02-20  Mike Stump  <mrs@apple.com>

        * configure.ac (powerpc*-*-darwin*): #include <sys/cdefs.h>.
        * configure: Regenerate.

2007-02-21  Trevor Smigiel  <trevor_smigiel@playstation.sony.com>

        Change the defaults of some parameters and options.
        * config/spu/spu-protos.h (spu_optimization_options): Declare.
        * config/spu/spu.c (spu_optimization_options): Add.
        (spu_override_options): Change params in spu_optimization_options.
        * config/spu/spu.h (OPTIMIZATION_OPTIONS): Define.

        Register 127 is only 16 byte aligned when used as a frame pointer.
        * config/spu/spu-protos.h (spu_init_expanders): Declare.
        * config/spu/spu.c (spu_expand_prologue): Set REGNO_POINTER_ALIGN for
        HARD_FRAME_POINTER_REGNUM.
        (spu_legitimate_address):  Use regno_aligned_for_reload.
        (regno_aligned_for_load):  HARD_FRAME_POINTER_REGNUM is only 16 byte
        aligned when frame_pointer_needed is true.
        (spu_init_expanders): New.  Set alignment of HARD_FRAME_POINTER_REGNUM
        to 8 bits.
        * config/spu/spu.h (INIT_EXPANDERS): Define.

        Make sure shift and rotate instructions have valid immediate operands.
        * config/spu/predicates.md (spu_shift_operand): Remove.
        * config/spu/spu.c (print_operand): Add [efghEFGH] modifiers.
        * config/spu/constraints.md (W, O): Extend range.
        * config/spu/spu.md (umask, nmask): Define.
        (ashl<mode>3, ashldi3, ashlti3_imm, shlqbybi_ti, shlqbi_ti, shlqby_ti,
        lshr<mode>3, rotm_<mode>, lshr<mode>3_imm, rotqmbybi_<mode>,
        rotqmbi_<mode>, rotqmby_<mode>, ashr<mode>3, rotma_<mode>,
        rotl<mode>3, rotlti3, rotqbybi_ti, rotqby_ti, rotqbi_ti): Use
        spu_nonmem_operand instead of spu_shift_operands.  Use new modifiers.
        (lshr<mode>3_reg):  Fix rtl description.

        Make sure mulhisi immediate operands are valid.
        * config/spu/predicates.md (imm_K_operand): Add.
        * config/spu/spu.md (mulhisi3_imm, umulhisi3_imm): Use imm_K_operand.

        Generate constants using fsmbi and andi.
        * config/spu/spu.c (enum immediate_class): Add IC_FSMBI2.
        (print_operand, spu_split_immediate, classify_immediate,
        fsmbi_const_p): Handle IC_FSMBI2.

        Correctly handle a CONST_VECTOR containing symbols.
        * config/spu/spu.c (print_operand): Handle HIGH correctly.
        (spu_split_immediate): Split CONST_VECTORs with -mlarge-mem.
        (immediate_load_p): Allow symbols that use 2 instructions to create.
        (classify_immediate, spu_builtin_splats):  Don't accept a CONST_VECTOR
        with symbols when flag_pic is set.
        (const_vector_immediate_p): New.
        (logical_immediate_p, iohl_immediate_p, arith_immediate_p): Don't
        accept a CONST_VECTOR with symbols.
        (spu_legitimate_constant_p): Use const_vector_immediate_p.  Don't
        accept a CONST_VECTOR with symbols when flag_pic is set.  Handle HIGH
        correctly.
        * config/spu/spu.md (high, low): Delete.
        (low_<mode>): Define.

        Remove INTRmode and INTR_REGNUM, which didn't work.
        * config/spu/spu.c (spu_conditional_register_usage): Remove reference
        of INTR_REGNUM.
        * config/spu/spu-builtins.md (spu_idisable, spu_ienable, set_intr,
        set_intr_pic, set_intr_cc, set_intr_cc_pic, set_intr_return, unnamed
        peephole2 pattern): Don't use INTR or 131.
        (movintrcc): Delete.
        * config/spu/spu.h (FIRST_PSEUDO_REGISTER, FIXED_REGISTERS,
        CALL_USED_REGISTERS, REGISTER_NAMES, INTR_REGNUM): Remove INTR_REGNUM.
        * config/spu/spu.md (UNSPEC_IDISABLE, UNSPEC_IENABLE): Remove.
        (UNSPEC_SET_INTR): Add.
        * config/spu/spu-modes.def (INTR): Remove.

        More accurate warnings about run-time relocations.
        * config/spu/spu.c (reloc_diagnostic): Test in_section.

        Correctly warn about immediate arguments to specific intrinsics.
        * config/spu/spu.c (spu_check_builtin_parm): Handle CONST_VECTORs.
        (spu_expand_builtin_1): Call spu_check_builtin_parm before checking
        the instruction predicate.

        Fix tree check errors with latest update.
        * config/spu/spu.c (expand_builtin_args, spu_expand_builtin_1): Use
        CALL_EXPR_ARG.
        (spu_expand_builtin): Use CALL_EXPR_FN.

        Add missing specific intrinsics.
        * config/spu/spu-builtins.def: Add si_bisled, si_bisledd and
        si_bislede.
        * config/spu/spu_internals.h: Ditto.

        Fix incorrect operand modifiers.
        * config/spu/spu-builtins.md (spu_mpy, spu_mpyu):  Remove use of %H.
        * config/spu/spu.md (xor<mode>3):  Change %S to %J.

        Optimize one case of zero_extend of a vec_select.
        * config/spu/spu.md (_vec_extractv8hi_ze):  Add.

        Accept any immediate for hbr.
        * config/spu/spu.md (hbr):  Change s constraints to i.

2007-02-21  Paul Brook  <paul@codesourcery.com>

        * config/arm/arm.c (thumb2_final_prescan_insn): Don't incrememnt
        condexec_count when skipping USE and CLOBBER.

2007-02-21  Nick Clifton  <nickc@redhat.com>

        * common.opt (Warray-bounds): Add Warning attribute.
        (Wstrict-overflow, Wstrict-overflow=, Wcoverage-mismatch):
        Likewise.
        (fsized-zeroes): Add Optimization attribute.
        (fsplit-wide-types, ftree-scev-cprop): Likewise.
        * c.opt (Wc++0x-compat): Add Warning attribute.

2007-02-21  Ulrich Weigand  <uweigand@de.ibm.com>

        PR middle-end/30761
        * reload1.c (eliminate_regs_in_insn): In the single_set special
        case, attempt to re-recognize the insn before falling back to
        having reload fix it up.

2007-02-20  Eric Christopher  <echristo@gmail.com>

        * config/frv/frv.c (frv_read_argument): Take a tree and int argument.
        Rewrite accordingly.
        (frv_read_iacc_argument): Ditto.
        (frv_expand_set_builtin): Take a call instead of arglist, update for
        above changes.
        (frv_expand_unop_builtin): Ditto.
        (frv_expand_binop_builtin): Ditto.
        (frv_expand_cut_builtin): Ditto.
        (frv_expand_binopimm_builtin): Ditto.
        (frv_expand_voidbinop_builtin): Ditto.
        (frv_expand_int_void2arg): Ditto.
        (frv_expand_prefetches): Ditto.
        (frv_expand_voidtriop_builtin): Ditto.
        (frv_expand_voidaccop_builtin): Ditto.
        (frv_expand_load_builtin): Ditto.
        (frv_expand_store_builtin): Ditto.
        (frv_expand_mdpackh_builtin): Ditto.
        (frv_expand_mclracc_builtin): Ditto.
        (frv_expand_mrdacc_builtin): Ditto.
        (frv_expand_mwtacc_builtin): Ditto.
        (frv_expand_builtin): Remove usage of CALL_EXPR_ARGS, update
        calls for above.

2007-02-20  Janis Johnson  <janis187@us.ibm.com>

        * doc/invoke.texi (RS/6000 and PowerPC Options): Add -mcmpb and -mdfp.
        * configure.ac (HAVE_GAS_CMPB): Check for assembler support of the
        cmpb instruction.
        (HAVE_GAS_DFP): Check for assembler support of decimal floating
        point instructions.
        * configure: Regenerate.
        * config.in: Regenerate.
        * config/rs6000/rs6000.opt (mcmpb, mdfp): New.
        * config/rs6000/rs6000.c (rs6000_override_options): Add CMPB and DFP
        masks to power6 and power6x and to POWERPC_MASKS.
        * config/rs6000/rs6000-c.c (rs6000_cpu_cpp_builtins): Define
        _ARCH_PWR6.
        * config/rs6000/rs6000.h: Check assembler support for CMPB and DFP.
        * config/rs6000/sysv4.opt (mprototype): Use variable, not mask.
        * config/rs6000/linux64.h (SUBSUBTARGET_OVERRIDE_OPTIONS):
        Access PROTOTYPE as variable, not mask.

2007-02-20  Steven Bosscher  <steven@gcc.gnu.org>

        * rtl.h (remove_reg_equal_equiv_notes): New prototype.
        * rtlanal.c (remove_reg_equal_equiv_notes): New function.
        * combine.c (adjust_for_new_dest): Use it.
        * postreload.c (reload_combine): Likewise.

2007-02-20  Steven Bosscher  <steven@gcc.gnu.org>

        * rtlanal.c (find_reg_equal_equiv_note): Do not find REG_EQ*
        notes on an insn with multiple sets, even if single_set returns
        non-NULL for that insn.

2007-02-20  Kaveh R. Ghazi  <ghazi@caip.rutgers.edu>

        * fold-const.c (tree_expr_nonnegative_warnv_p): Handle scalb,
        scalbn and scalbln.

2007-02-20  Geoffrey Keating  <geoffk@apple.com>

        * config/darwin.h (LINK_SPEC): Default -mmacosx-version-min only
        if user didn't pass it.
        * config/i386/darwin.h (CC1_SPEC): Likewise.
        * config/rs6000/darwin.h (CC1_SPEC): Likewise.
        (DARWIN_MINVERSION_SPEC): Don't depend on user's setting of
        -mmacosx-version-min.

2007-02-20  Kaveh R. Ghazi  <ghazi@caip.rutgers.edu>
            Uros Bizjak  <ubizjak@gmail.com>

        * optabs.h (enum optab_index): Add new OTI_scalb.
        (scalb_optab): Define corresponding macro.
        * optabs.c (init_optabs): Initialize scalb_optab.
        * genopinit.c (optabs): Implement scalb_optab using scalb?f3
        patterns.
        * builtins.c (expand_builtin_mathfn_2, expand_builtin): Handle
        BUILT_IN_SCALB{,F,L}, BUILT_IN_SCALBN{,F,L} and BUILT_IN_SCALBLN{,F,L}.
        (expand_builtin): Expand BUILT_IN_SCALB{,F,L}, BUILT_IN_SCALBN{,F,L}
        and BUILT_IN_SCALBLN{,F,L} using expand_builtin_mathfn_2 if
        flag_unsafe_math_optimizations is set.

        * config/i386/i386.md (scalbxf3, scalb<mode>3): New expanders
        to implement scalbf, scalb and scalbl built-ins as inline x87
        intrinsics.

2007-02-20  Manuel Lopez-Ibanez  <manu@gcc.gnu.org>
            DJ Delorie <dj@redhat.com>

        PR other/30824
        * diagnostic.c (diagnostic_count_diagnostic): Move -Werror logic to...
        (diagnostic_report_diagnostic): ... here, and turn them into real
        errors. If warnings are inhibited, no need to do anything.

2007-02-20  Uros Bizjak  <ubizjak@gmail.com>

        * config/i386/i386.md (expm1xf2): Reorder insn sequence for
        better code generation.

2007-02-20  Ben Elliston  <bje@au.ibm.com>

        * config/m68hc11/m68hc11.h (OVERRIDE_OPTIONS): Remove extra ;.

2007-02-20  Kazu Hirata  <kazu@codesourcery.com>

        * config/alpha/alpha.c, config/alpha/alpha.md,
        config/alpha/lib1funcs.asm, config/alpha/vms-crt0-64.c,
        config/alpha/vms-psxcrt0-64.c, config/arc/arc.c,
        config/arc/arc.h, config/arm/arm.c, config/arm/arm.md,
        config/arm/lib1funcs.asm: Follow spelling conventions.

        * config/c4x/c4x.md, config/cris/cris.c, config/crx/crx.c,
        config/fr30/fr30.md, config/i386/i386.h,
        config/iq2000/iq2000.h, config/iq2000/predicates.md,
        config/pa/milli64.S, config/pa/pa.c, config/pa/pa.h,
        config/pa/pa.md, config/pa/pa32-regs.h, config/pa/pa64-regs.h,
        config/pdp11/pdp11.c, config/pdp11/pdp11.h,
        config/rs6000/altivec.md, config/rs6000/rs6000.c,
        config/s390/s390-modes.def, config/sparc/netbsd-elf.h,
        config/sparc/sparc.c, config/sparc/sparc.h,
        config/sparc/sparc.md, config/spu/constraints.md,
        config/spu/spu.c, config/stormy16/stormy16.md: Follow spelling
        conventions.

2007-02-20  Alan Modra  <amodra@bigpond.net.au>

        PR target/29943
        * varasm.c (use_blocks_for_decl_p): Return false for decls with
        alias attribute.

2007-02-19  Kazu Hirata  <kazu@codesourcery.com>

        * doc/invoke.texi (-ftree-lrs): Remove.

2007-02-19  Diego Novillo  <dnovillo@redhat.com>

        * tree-ssa-pre.c (create_value_expr_from): Initialize POOL to
        NULL.

2007-02-19  Lee Millward  <lee.millward@codesourcery.com>

        * config/ia64/ia64.c (ia64_expand_builtin): Use the
        new CALL_EXPR_FN macro for retrieving the function
        declaration of the input expression.

2007-02-19  Manuel Lopez-Ibanez  <manu@gcc.gnu.org>

        * c.opt (Waddress): New.
        * common.opt (Walways-true): Delete.
        (Wstring-literal-comparison): Delete.
        * doc/invoke.texi (Warning Options): Delete -Walways-true and
        -Wstring-literal-comparison. Add -Waddress.
        (Waddress): New.
        (Walways-true): Delete.
        (Wstring-literal-comparison): Delete.
        * doc/extend.texi (#pragma GCC diagnostic): Use -Wformat
        consistently instead of -Walways-true in example.
        * c-opts.c (c_common_handle_option): -Waddress is enabled by -Wall.
        * c-typeck.c (parser_build_binary_op): Replace
        -Wstring-literal-comparison and -Walways-true with -Waddress.
        * c-common.c (c_common_truthvalue_conversion): Replace -Walways-true
        with -Waddress.

2007-02-19  Eric Botcazou  <ebotcazou@adacore.com>

        * tree-cfg.c (dump_function_to_file): Be prepared for functions
        without DECL_STRUCT_FUNCTION initialized.

2007-02-19  Eric Botcazou  <ebotcazou@adacore.com>

        * gimplify.c (gimplify_init_ctor_preeval_1): Detect potential overlap
        due to calls to functions taking pointers as parameters.

2007-02-19  Richard Henderson  <rth@redhat.com>

        PR debug/29558
        * var-tracking.c (track_expr_p): Disallow AGGREGATE_TYPE_P
        in memory.

2007-02-19  Andreas Krebbel  <krebbel1@de.ibm.com>

        * config/s390/s390.c (s390_call_saved_register_used,
        s390_function_ok_for_sibcall): Adjust the way CALL_EXPR arguments are
        accessed to the new scheme.

2007-02-19  Jan-Benedict Glaw  <jbglaw@lug-owl.de>

        * config/cris/cris.c (cris_movem_load_rest_p, cris_store_multiple_op_p)
        (cris_print_index, cris_print_operand, cris_print_operand_address)
        (cris_reload_address_legitimized, cris_rtx_costs, cris_address_cost)
        (cris_side_effect_mode_ok, cris_valid_pic_const, cris_split_movdx)
        (cris_expand_pic_call_address): Use xxx_P predicate macros instead of
        GET_CODE () == xxx.
        * config/cris/cris.h (SECONDARY_RELOAD_CLASS, EXTRA_CONSTRAINT_Q,
        EXTRA_CONSTRAINT_T, BDAP_INDEX_P, BIAP_INDEX_P, SIMPLE_ADDRESS_P,
        GO_IF_LEGITIMATE_ADDRESS): Ditto.
        * config/cris/cris.md (define_insns: *btst, movdi, *mov_side<mode>)
        (*mov_sidesisf, *mov_side<mode>_mem, *mov_sidesisf_mem)
        (*clear_side<mode>, movsi, *movsi_internal, *ext_sideqihi)
        (*ext_side<mode>si, *op_side<mode>, *op_swap_side<mode>, addsi3)
        (*extopqihi_side, *extop<mode>si_side, *extopqihi_swap_side)
        (*extop<mode>si_swap_side, addi_mul, *addi,andsi3, andhi3, ashl<mode>3)
        (uminsi3, call, call_value): Ditto.
        (define_split: indir_to_reg_split, unnamed): Ditto.

2007-02-19  Dorit Nuzman  <dorit@il.ibm.com>

        PR tree-optimization/30975
        * tree-vect-trasnform.c (vect_get_vec_def_for_stmt_copy): Remove
        wrong assert.

2007-02-18  Eric Christopher  <echristo@gmail.com>

        * mips.c (mips_prepare_builtin_arg): Add argnum parameter.
        Remove use of arglist.
        (mips_expand_builtin): Remove use of arglist, pass in expr.
        (mips_expand_builtin_direct): Rewrite handling for arglist removal.
        (mips_expand_builtin_movtf): Ditto.
        (mips_expand_builtin_compare): Ditto.

2007-02-19  Alexandre Oliva  <aoliva@redhat.com>

        * tree-sra.c (sra_build_assignment): Replace assertion
        checking with a comment explaining why it can't be done.

2007-02-18  Sandra Loosemore  <sandra@codesourcery.com>

        PR middle-end/30833
        * tree-dump.c (dequeue_and_dump): Add tcc_vl_exp case missed
        during CALL_EXPR representation conversion.
        * tree-ssa-propagate.c (set_rhs): Likewise.

2007-02-19  Alexandre Oliva  <aoliva@redhat.com>

        * tree-sra.c (sra_build_assignment): Disable assertion checking
        for now.

2007-02-18  Roger Sayle  <roger@eyesopen.com>

        * function.c (gimplify_parameters): Call build_gimple_modify_stmt
        instead of calling build2 with a GIMPLE_MODIFY_STMT.
        * gimple-low.c (lower_function_body, lower_builtin_setjmp):
        Likewise.
        * gimplify.c (build_stack_save_restore, gimplify_return_expr,
        gimplify_decl_expr,  gimplify_self_mod_expr, gimplify_cond_expr,
        gimplify_init_ctor_eval_range, gimple_push_cleanup,
        gimplify_omp_for, gimplify_omp_atomic_pipeline,
        gimplify_omp_atomic_mutex, gimplify_expr, gimplify_one_sizepos,
        force_gimple_operand): Likewise.
        * ipa-cp.c (constant_val_insert): Likewise.
        * lambda-code.c (lbv_to_gcc_expression, lle_to_gcc_expression,
        lambda_loopnest_to_gcc_loopnest, replace_uses_equiv_to_x_with_y,
        perfect_nestify): Likewise.
        * langhooks.c (lhd_omp_assignment): Likewise.
        * omp-low.c (lower_rec_input_clauses, lower_reduction_clauses,
        lower_copyprivate_clauses, lower_send_clauses,
        lower_send_shared_vars, expand_parallel_call,
        expand_omp_for_generic, expand_omp_for_static_nochunk,
        expand_omp_for_static_chunk, expand_omp_sections,
        lower_omp_single_copy, lower_omp_for_lastprivate,
        lower_omp_parallel, init_tmp_var, save_tmp_var): Likewise.
        * value-prof.c (tree_divmod_fixed_value, tree_mod_pow2,
        tree_mod_subtract, tree_ic, tree_stringop_fixed_value):
        Likewise.

2007-02-19  Kazu Hirata  <kazu@codesourcery.com>

        * config/sh/divtab.c, config/sh/sh.c, config/sh/sh.h,
        config/sh/sh.md: Follow spelling conventions.

        * config/frv/frv.c, config/frv/frv.h, config/frv/frv.md,
        config/frv/predicates.md: Follow spelling conventions.

        * config/m68k/linux-unwind.h: Fix a comment typo.
        * target.h: Follow spelling conventions.

2007-02-18  Roger Sayle  <roger@eyesopen.com>

        PR rtl-optimization/28173
        * simplify-rtx.c (simplify_binary_operation_1) <IOR>:  Optimize
        (X & C1) | C2 as C2 when (C1 & C2) == C1 and X has no side-effects.
        Optimize (X & C1) | C2 as X | C2 when (C1 | C2) == ~0.
        Canonicalize (X & C1) | C2 as (X & (C1 & ~C2)) | C2.
        <AND>: Canonicalize (X | C1) & C2 as (X & C2) | (C1 & C2).

2007-02-18  Kaveh R. Ghazi  <ghazi@caip.rutgers.edu>

        * builtins.c (fold_builtin_load_exponent): New.
        (fold_builtin_2): Use it.

2007-02-18  Steven Bosscher  <steven@gcc.gnu.org>

        PR rtl-optimization/30773
        * local-alloc.c (update_equiv_regs): Do not set reg_equiv_init
        if we fail to attach a REG_EQUIV note.

2007-02-18  David Edelsohn  <edelsohn@gnu.org>
            Roger Sayle  <roger@eyesopen.com>

        * config/rs6000/rs6000.md (bswapsi2): New define_insn and splitter.

2007-02-18  Sandra Loosemore  <sandra@codesourcery.com>

        * calls.c (initialize_argument_information): Pass original EXP
        and STRUCT_VALUE_ADDR_VALUE instead of a list of arguments.  Move
        code to split complex arguments here, as part of initializing the
        ARGS array.
        (expand_call): Remove code that builds a list of arguments and
        inserts implicit arguments into it.  Instead, just count how many
        implicit arguments there will be so we can determine the size of
        the ARGS array, and let initialize_argument_information do the work.
        (split_complex_values): Delete unused function.

2007-02-18  Eric Botcazou  <ebotcazou@adacore.com>

        * tree-eh.c (tree_could_trap_p): Handle VIEW_CONVERT_EXPR.

2007-02-18  Eric Botcazou  <ebotcazou@adacore.com>

        * calls.c (mem_overlaps_already_clobbered_arg_p): Return true
        for arg pointer based indexed addressing.

2007-02-18  Kazu Hirata  <kazu@codesourcery.com>

        * config/ia64/ia64.h, config/ia64/ia64.md,
        config/ia64/predicates.md, config/ia64/sysv4.h: Follow
        spelling conventions.

2007-02-18  Roman Zippel <zippel@linux-m68k.org>

        * config/m68k/m68k.c (split_di): New.
        * config/m68k/m68k-protos.h: Declare split_di.
        * config/m68k/m68k.md (extendsidi2*,ashldi3*,ashrdi3*,lshrdi3*):
          Improve predicate handling and split constant shifts.

2007-02-18  Roman Zippel <zippel@linux-m68k.org>

        * config/m68k/m68k.md (extv,extzv,insv): disable dynamic
        parameter for register bitfield operations, general predicates
        cleanup

2007-02-18  Roman Zippel <zippel@linux-m68k.org>

        * config/m68k/linux.h (MD_UNWIND_SUPPORT): Define.
        * config/m68k/linux-unwind.h: New file.

2007-02-18  Kazu Hirata  <kazu@codesourcery.com>

        * cfgloop.c, config/alpha/alpha.c, config/bfin/bfin.c,
        config/i386/athlon.md, config/ia64/ia64.md,
        config/rs6000/rs6000.c, config/s390/s390.c, config/spu/spu.md,
        df-problems.c, df.h, fold-const.c, ipa-cp.c, ipa-inline.c,
        ipa-prop.h, see.c, struct-equiv.c, tree-inline.c,
        tree-ssa-loop-niter.c, tree-vect-analyze.c,
        tree-vect-transform.c: Fix comment typos.

2007-02-17  Kazu Hirata  <kazu@codesourcery.com>

        * sched-deps.c (find_insn_list): Remove.
        * sched-int.h: Remove the prototype for find_insn_list.

2007-02-16  Geoffrey Keating  <geoffk@apple.com>

        * config/darwin.h (LINK_SPEC): Always pass -macosx_version_min
        to linker.
        (DARWIN_EXTRA_SPECS): Add %(darwin_minversion).
        * config/rs6000/darwin.h (SUBTARGET_OVERRIDE_OPTIONS): Just call
        darwin_rs6000_override_options.
        (C_COMMON_OVERRIDE_OPTIONS): Expect
        darwin_macosx_version_min to be non-NULL always.
        (TARGET_C99_FUNCTIONS): Likewise.
        (CC1_SPEC): Always pass -mmacosx-version-min to cc1*.
        (DARWIN_MINVERSION_SPEC): New.
        * config/rs6000/rs6000.c (darwin_rs6000_override_options): New.
        * config/i386/darwin.h (CC1_SPEC): Always pass -mmacosx-version-min
        to cc1*.
        (DARWIN_MINVERSION_SPEC): New.
        * config/darwin.opt (mmacosx-version-min): Initialize to non-NULL
        value.
        * config/darwin-c.c (darwin_cpp_builtins): Expect
        darwin_macosx_version_min to be non-NULL always.

        * config/rs6000/rs6000.c: Clean up trailing whitespace.

2007-02-16  Uros Bizjak  <ubizjak@gmail.com>

        * config/i386/i386.h (x86_use_xchgb): New.
        (TARGET_USE_XCHGB): New macro.
        * config/i386/i386.c (x86_use_xchgb): Set for PENT4.
        * config/i386/i386.md (*rotlhi3_1 splitter, *rotrhi3_1 splitter):
        Split after reload into bswaphi for shifts of 8.
        (bswaphi_lowpart): Generate rolw insn for HImode byte swaps.
        (*bswaphi_lowpart_1): Generate xchgb for Q registers for TARGET_XCHGB
        or when optimizing for size.

2007-02-16  Richard Guenther  <rguenther@suse.de>
            Christian Bruel  <christian.bruel@st.com>

        * fold-const.c (tree_swap_operands_p): Treat SSA_NAMEs like
        DECLs but prefer SSA_NAMEs over DECLs.

2007-02-16  Richard Guenther  <rguenther@suse.de>

        * tree-flow-inline.h (single_imm_use_p): Remove.
        (zero_imm_uses_p): Likewise.
        * tree-ssa-coalesce.c (create_outofssa_var_map): Use has_single_use
        instead of single_imm_use_p.
        * tree-cfg.c (replace_uses_by): Use has_zero_use instead of
        zero_imm_uses_p.

2007-02-16  Ralf Wildenhues  <Ralf.Wildenhues@gmx.de>

        PR other/27843
        * Makefile.in (SYSTEM_HEADER_DIR): Use single quotes to avoid
        nested double- and backquotes.

2007-02-15  Roger Sayle  <roger@eyesopen.com>

        PR middle-end/30391
        * tree.c (expr_align): Handle MODIFY_EXPR.  GIMPLE_MODIFY_STMT
        should be unreachable.
        (build2_stat): Allow construction of MODIFY_EXPR at any time.
        For the time being redirect GIMPLE_MODIFY_STMT to the new
        (renamed) build_gimple_modify_stmt_stat.
        (build2_gimple_stat): Rename to...
        (build_gimple_modify_stmt_stat): Now longer take a CODE argument.
        Always build a GIMPLE_MODIFY_STMT node.
        * tree.h (build2_gimple, build2_gimple_stat): Delete.
        (build_gimple_modify_stmt, build_gimple_modify_stmt_stat): New
        declarations.

        * tree-cfg.c (factor_computed_gotos, tree_merge_blocks,
        gimplify_val): Use build_gimple_modify_stmt instead of build2_gimple.
        * tree-complex.c (set_component_ssa_name, expand_complex_move,
        expand_complex_div_wide): Likewise.
        * tree-ssa-dom.c (record_equivalences_from_stmt): Likewise.
        * tree-ssa-loop-im.c (schedule_sm): Likewise.
        * tree-ssa-loop-ivopts.c (rewrite_use_nonlinear_expr): Likewise.
        * tree-ssa-loop-manip.c (create_iv): Likewise.
        * tree-ssa-phiopt.c (conditional_replacement, minmax_replacement,
        abs_replacement): Likewise.
        * tree-ssa-pre.c (create_expression_by_pieces, poolify_modify_stmt,
        realify_fake_stores): Likewise.

        * builtins.c (std_expand_builtin_va_start): Build a MODIFY_EXPR
        node rather than a GIMPLE_MODIFY_STMT node.
        (std_gimpify_va_arg_expr, expand_builtin_va_copy,
        fold_builtin_memset, fold_builtin_memory_op, do_mpfr_sincos):
        Likewise.
        (integer_valued_real_p): Handle MODIFY_EXPR, not GIMPLE_MODIFY_STMT.
        * expr.c (expand_expr_real_1): Handle both MODIFY_EXPR and
        GIMPLE_MODIFY_STMT.

2007-02-15  Andrew Pinski  <andrew_pinski@playstation.sony.com>

        PR middle-end/30433
        * fold-const.c (fold_comparison): Add back the
        folding of constant complex comparisions.

2007-02-15  Andrew Pinski  <andrew_pinski@playstation.sony.com>

        PR middle-end/30729
        * stmt.c (warn_if_unused_value): VA_ARG_EXPR has side
        effects unknown to this function, return early.

2007-02-15  Ian Lance Taylor  <iant@google.com>

        * lower-subreg.c (move_eh_region_note): New static function.
        (resolve_simple_move): Call it.
        (decompose_multiword_subregs): Track blocks for which we resolve a
        simple move which is also a control flow insn.  Pass them to
        find_many_sub_basic_blocks.
        (pass_lower_subreg): Add TODO_verify_flow.
        (pass_lower_subreg2): Likewise.

2007-02-15  Sandra Loosemore  <sandra@codesourcery.com>
            Brooks Moses  <brooks.moses@codesourcery.com>
            Lee Millward  <lee.millward@codesourcery.com>

        * tree.h (enum tree_code_class): Add tcc_vl_exp.
        (VL_EXP_CLASS_P): New.
        (TREE_OPERAND_CHECK): Use TREE_OPERAND_LENGTH instead of
        TREE_CODE_LENGTH.
        (TREE_OPERAND_CHECK_CODE): Likewise.
        (GIMPLE_STMT_OPERAND_CHECK): Likewise.
        (TREE_RTL_OPERAND_CHECK): Likewise.
        (tree_operand_check_failed): Make second parameter the whole tree
        instead of its code.  Fixed callers.
        (VL_EXP_CHECK): New.
        (TREE_OPERAND_LENGTH): New.
        (VL_EXP_OPERAND_LENGTH): New.
        (CALL_EXPR_FN): New.
        (CALL_EXPR_STATIC_CHAIN): New.
        (CALL_EXPR_ARGS): New.
        (CALL_EXPR_ARG): New.
        (call_expr_nargs): New.
        (CALL_EXPR_ARGP): New.
        (build_nt_call_list): Declare.
        (build_vl_exp_stat): Declare.
        (build_vl_exp): New.
        (build_call_list): Declare.
        (build_call_nary): Declare.
        (build_call_valist): Declare.
        (build_call_array): Declare.
        (call_expr_arg): Declare.
        (call_expr_argp): Declare.
        (call_expr_arglist): Declare.
        (fold_build_call_list): Declare.
        (fold_build_call_list_initializer): Declare.
        (fold_call_expr): Declare to replace fold_builtin.
        (fold_builtin_fputs): Update to agree with modified definition.
        (fold_builtin_strcpy): Likewise.
        (fold_builtin_strncpy): Likewise.
        (fold_builtin_memory_chk): Likewise.
        (fold_builtin_stxcpy_chk): Likewise.
        (fold_builtin_strncpy_chk): Likewise.
        (fold_builtin_next_arg): Likewise.
        (fold_build_call_expr): Declare.
        (fold_builtin_call_list): Declare.
        (fold_builtin_call_valist): Declare.
        (build_call_expr): Declare.
        (validate_arglist): Update to agree with modified definition.
        (tree_operand_length): New.
        (call_expr_arg_iterator): New.
        (init_call_expr_arg_iterator): New.
        (next_call_expr_arg): New.
        (first_call_expr_arg): New.
        (more_call_expr_args_p): New.
        (FOR_EACH_CALL_EXPR_ARG): New.

        * tree.c (tree_code_class_string): Add entries for tcc_vl_exp
        and tcc_gimple_stmt.
        (tree_code_size): Update documentation.  Use sizeof (tree) rather
        than sizeof (char *).
        (tree_size): Likewise.  Add case for tcc_vl_exp.
        (tree_node_structure): Add case for tcc_vl_exp.
        (contains_placeholder_p): Likewise.
        (substitute_in_expr): Likewise.
        (substitute_placeholder_in_expr): Likewise.
        (stabilize_reference_1): Likewise.
        (build3_stat): Remove logic for CALL_EXPRs.  Replace with assertion
        to diagnose breakage of this interface for constructing CALL_EXPRs.
        (build_nt): Add similar assertion here.
        (build_nt_call_list): New.
        (simple_cst_equal) <CALL_EXPR>: Rewrite to use new accessors.
        (iterative_hash_expr): Use TREE_OPERAND_LENGTH instead of
        TREE_CODE_LENGTH.
        (get_callee_fndecl): Use new CALL_EXPR accessors.
        (tree_operand_check_failed): Change parameters to pass entire node
        instead of its code, so that we can call TREE_OPERAND_LENGTH on it.
        (process_call_operands): New.
        (build_vl_exp_stat): New.
        (build_call_list): New.
        (build_call_nary): New.
        (build_call_valist): New.
        (build_call_array): New.
        (walk_tree): Use TREE_OPERAND_LENGTH instead of TREE_CODE_LENGTH.
        (call_expr_arglist): New.

        * tree.def (CALL_EXPR): Change representation of CALL_EXPRs to use
        tcc_vl_exp instead of a fixed-size tcc_expression.

        * doc/c-tree.texi (CALL_EXPR): Document new representation and
        accessors for CALL_EXPRs.
        (AGGR_INIT_EXPR): Likewise.

2007-02-15  Sandra Loosemore  <sandra@codesourcery.com>
            Brooks Moses  <brooks.moses@codesourcery.com>
            Lee Millward  <lee.millward@codesourcery.com>

        * builtins.c (c_strlen): Return NULL_TREE instead of 0.
        (expand_builtin_nonlocal_goto): Change parameter to be entire
        CALL_EXPR instead of an arglist.  Use new CALL_EXPR accessors.
        (expand_builtin_prefetch): Likewise.
        (expand_builtin_classify_type): Likewise.
        (mathfn_built_in): Return NULL_TREE instead of 0.
        (expand_errno_check): Use new CALL_EXPR accessors.
        (expand_builtin_mathfn): Use new CALL_EXPR accessors and constructors.
        Return NULL_RTX instead of 0.
        (expand_builtin_mathfn_2): Likewise.
        (expand_builtin_mathfn_3): Likewise.
        (expand_builtin_interclass_mathfn): Likewise.
        (expand_builtin_sincos): Likewise.
        (expand_builtin_cexpi): Likewise.
        (expand_builtin_int_roundingfn): Likewise.
        (expand_builtin_int_roundingfn_2): Likewise.
        (expand_builtin_pow): Likewise.
        (expand_builtin_powi): Likewise.
        (expand_builtin_strlen): Pass entire CALL_EXPR as parameter instead
        of arglist, fixing callers appropriately.  Use new CALL_EXPR
        accessors and constructors.  Return NULL_RTX instead of 0.
        (expand_builtin_strstr): Likewise.
        (expand_builtin_strchr): Likewise.
        (expand_builtin_strrchr): Likewise.
        (expand_builtin_strpbrk): Likewise.
        (expand_builtin_memcpy): Likewise.
        (expand_builtin_mempcpy): Likewise.
        (expand_builtin_mempcpy_args): New.
        (expand_builtin_memmove): Similarly to expand_builtin_mempcpy.
        (expand_builtin_memmove_args): New.
        (expand_builtin_bcopy): Similarly to expand_builtin_mempcpy.
        (expand_movstr): Likewise.
        (expand_builtin_strcpy): Likewise.
        (expand_builtin_strcpy_args): New.
        (expand_builtin_stpcpy): Similarly to expand_builtin_strcpy.
        (expand_builtin_strncpy): Likewise.
        (expand_builtin_memset): Likewise.
        (expand_builtin_memset_args): New.
        (expand_builtin_bzero): Similarly to expand_builtin_memset.
        (expand_builtin_memcmp): Likewise.
        (expand_builtin_strcmp): Likewise.
        (expand_builtin_strncmp): Likewise.
        (expand_builtin_strcat): Likewise.
        (expand_builtin_strncat): Likewise.
        (expand_builtin_strspn): Likewise.
        (expand_builtin_strcspn): Likewise.
        (expand_builtin_args_info): Likewise.
        (expand_builtin_va_start): Likewise.
        (gimplify_va_arg_expr): Likewise.
        (expand_builtin_va_end): Likewise.
        (expand_builtin_va_copy): Likewise.
        (expand_builtin_frame_address): Likewise.
        (expand_builtin_alloca): Likewise.
        (expand_builtin_bswap): Likewise.
        (expand_builtin_unop): Likewise.
        (expand_builtin_fputs): Likewise.
        (expand_builtin_expect): Likewise.
        (expand_builtin_fabs): Likewise.
        (expand_builtin_copysign): Likewise.
        (expand_builtin_printf): Likewise.
        (expand_builtin_fprintf): Likewise.
        (expand_builtin_sprintf): Likewise.
        (expand_builtin_init_trampoline): Likewise.
        (expand_builtin_signbit): Likewise.
        (expand_builtin_fork_or_exec): Likewise.
        (expand_builtin_sync_operation): Likewise.
        (expand_builtin_compare_and_swap): Likewise.
        (expand_builtin_lock_test_and_set): Likewise.
        (expand_builtin_lock_release): Likewise.
        (expand_builtin): Likewise.
        (builtin_mathfn_code): Likewise.

        (fold_builtin_constant_p): Pass call arguments individually instead
        of as an arglist, fixing callers appropriately.  Use new CALL_EXPR
        accessors and constructors.  Return NULL_TREE instead of 0.
        (fold_builtin_expect): Likewise.
        (fold_builtin_classify_type): Likewise.
        (fold_builtin_strlen): Likewise.
        (fold_builtin_nan): Likewise.
        (integer_valued_real_p): Likewise.
        (fold_trunc_transparent_mathfn): Likewise.
        (fold_fixed_mathfn): Likewise.
        (fold_builtin_cabs): Likewise.
        (fold_builtin_sqrt): Likewise.
        (fold_builtin_cbrt): Likewise.
        (fold_builtin_cos): Likewise.
        (fold_builtin_cosh): Likewise.
        (fold_builtin_tan): Likewise.
        (fold_builtin_sincos): Likewise.
        (fold_builtin_cexp): Likewise.
        (fold_builtin_trunc): Likewise.
        (fold_builtin_floor): Likewise.
        (fold_builtin_ceil): Likewise.
        (fold_builtin_round): Likewise.
        (fold_builtin_int_roundingfn): Likewise.
        (fold_builtin_bitop): Likewise.
        (fold_builtin_bswap): Likewise.
        (fold_builtin_logarithm): Likewise.
        (fold_builtin_hypot): Likewise.
        (fold_builtin_pow): Likewise.
        (fold_builtin_powi): Likewise.
        (fold_builtin_exponent): Likewise.
        (fold_builtin_memset): Likewise.
        (fold_builtin_bzero): Likewise.
        (fold_builtin_memory_op): Likewise.
        (fold_builtin_bcopy): Deleted; call site changed to invoke
        fold_builtin_memory_op directly.
        (fold_builtin_strcpy): Similarly as for fold_builtin_memory_op.
        (fold_builtin_strncpy): Likewise.
        (fold_builtin_memcmp): Likewise.
        (fold_builtin_strcmp): Likewise.
        (fold_builtin_strncmp): Likewise.
        (fold_builtin_signbit): Likewise.
        (fold_builtin_copysign): Likewise.
        (fold_builtin_isascii): Likewise.
        (fold_builtin_toascii): Likewise.
        (fold_builtin_isdigit): Likewise.
        (fold_builtin_fabs): Likewise.
        (fold_builtin_abs): Likewise.
        (fold_builtin_fmin_fmax): Likewise.
        (fold_builtin_carg): Likewise.
        (fold_builtin_classify): Likewise.
        (fold_builtin_unordered_cmp): Likewise.

        (fold_builtin_0, fold_builtin_2, fold_builtin_3, fold_builtin_4):
        New functions split out from fold_builtin_1.
        (fold_builtin_n): New.
        (fold_builtin_varargs): New.
        (fold_builtin): Deleted.  Most callers changed to use fold_call_expr
        instead.
        (fold_call_expr): New.
        (build_function_call_expr): Rewrite to use new helper function.
        (fold_builtin_call_list): New.
        (build_call_expr): New.
        (fold_builtin_call_valist): New.
        (rewrite_call_expr): New.
        (validate_arg): New.
        (validate_arglist): Change parameter to be entire CALL_EXPR instead
        of an arglist.  Change return type to bool.  Use new CALL_EXPR
        accessors.

        (fold_builtin_strstr):  Pass call arguments individually instead
        of as an arglist, fixing callers appropriately.  Use new CALL_EXPR
        accessors and constructors.  Return NULL_TREE instead of 0.
        (fold_builtin_strchr): Likewise.
        (fold_builtin_strrchr): Likewise.
        (fold_builtin_strpbrk): Likewise.
        (fold_builtin_strcat): Likewise.
        (fold_builtin_strncat): Likewise.
        (fold_builtin_strspn): Likewise.
        (fold_builtin_strcspn): Likewise.
        (fold_builtin_fputs): Likewise.
        (fold_builtin_next_arg): Likewise.
        (fold_builtin_sprintf): Likewise.

        (expand_builtin_object_size): Use new CALL_EXPR accessors.  Use
        NULL_RTX instead of 0.
        (expand_builtin_memory_chk): Likewise.
        (maybe_emit_chk_warning): Likewise.
        (maybe_emit_sprintf_chk_warning): Likewise.

        (fold_builtin_object_size): Pass call arguments individually instead
        of as an arglist, fixing callers appropriately.  Use new CALL_EXPR
        accessors and constructors.  Return NULL_TREE instead of 0.
        (fold_builtin_memory_chk): Likewise.
        (fold_builtin_stxcpy_chk): Likewise.
        (fold_builtin_strncpy_chk): Likewise.
        (fold_builtin_strcat_chk): Likewise.
        (fold_builtin_strcat_chk): Likewise.
        (fold_builtin_strncat_chk): Likewise.
        (fold_builtin_sprintf_chk): Likewise.
        (fold_builtin_snprintf_chk): Likewise.
        (fold_builtin_printf): Likewise.
        (fold_builtin_vprintf): Likewise.

        * fold-const.c (negate_expr_p): Use new CALL_EXPR accessors and
        constructors.
        (operand_equal_p): Add separate tcc_vl_exp/CALL_EXPR case.
        (make_range): Use TREE_OPERAND_LENGTH instead of TREE_CODE_LENGTH.
        (extract_muldiv_1): Add VL_EXP_CLASS_P case.
        (fold_mathfn_compare): Use new CALL_EXPR accessors and constructors.
        (fold_unary): Likewise.
        (fold_binary): Likewise.
        (fold_ternary): Remove CALL_EXPR case, since they are no longer
        ternary expressions.
        (fold): Add logic for tcc_vl_exp.
        (fold_checksum_tree):  Make it know about tcc_vl_exp.  Use
        TREE_OPERAND_LENGTH instead of TREE_CODE_LENGTH.
        (fold_build3_stat): Add assertion to flag broken interface for
        constructing CALL_EXPRs.
        (fold_build_call_list): New.
        (fold_build_call_list_initializer): New.
        (tree_expr_nonnegative_p): Use new CALL_EXPR accessors and
        constructors.
        (fold_strip_sign_ops): Likewise.

2007-02-15  Sandra Loosemore  <sandra@codesourcery.com>
            Brooks Moses  <brooks.moses@codesourcery.com>
            Lee Millward  <lee.millward@codesourcery.com>

        * tree-dump.c (dequeue_and_dump) <CALL_EXPR>: Use new CALL_EXPR
        accessors and dump arguments explicitly.

        * tree-pretty-print.c (do_niy): Use TREE_OPERAND_LENGTH instead of
        TREE_CODE_LENGTH.
        (dump_generic_node): Use new CALL_EXPR accessors and walk arguments
        explicitly.
        (print_call_name): Use new CALL_EXPR accessors.

        * print-tree.c (print_node): Add case tcc_vl_exp.  Print
        CALL_EXPR arguments explicitly instead of as a list.  Use
        TREE_OPERAND_LENGTH instead of TREE_CODE_LENGTH.

        * tree-vrp.c (stmt_interesting_for_vrp): Use new CALL_EXPR accessors.
        (vrp_visit_stmt): Likewise.

        * tree-ssa-loop-im.c (outermost_invariant_loop_expr):  Make it
        know about tcc_vl_exp.  Use TREE_OPERAND_LENGTH instead of
        TREE_CODE_LENGTH.
        (force_move_till_expr): Likewise.

        * targhooks.c (default_external_stack_protect_fail): Use
        build_call_expr instead of build_function_call_expr.
        (default_hidden_stack_protect_fail): Likewise.

        * tree-complex.c (expand_complex_libcall): Use build_call_expr to
        build the call.

        * cgraphbuild.c (build_cgraph_edges): Use new CALL_EXPR accessors
        and walk arguments explicitly.

        * tree-ssa-loop-niter.c (simplify_replace_tree): Use
        TREE_OPERAND_LENGTH instead of TREE_CODE_LENGTH.
        (expand_simple_operations): Likewise.
        (infer_loop_bounds_from_array): Use new CALL_EXPR accessors.

        * gengtype.c (adjust_field_tree_exp): Use TREE_OPERAND_LENGTH instead
        of TREE_CODE_LENGTH.
        (walk_type): Tweak walking of arrays not to blow up on CALL_EXPRs.

        * optabs.c (expand_widen_pattern-expr): Use TREE_OPERAND_LENGTH
        instead of TREE_CODE_LENGTH.

        * value_prof.c (tree_ic): Use new CALL_EXPR accessors.
        (tree_ic_transform): Likewise.
        (interesting_stringop_to_profile_p): Pass entire CALL_EXPR as
        parameter instead of arglist.  Fix callers.
        (tree_stringop_fixed_value): Use new CALL_EXPR accessors.
        (tree_stringops_transform): Likewise.
        (tree_indirect_call_to_profile): Likewise.
        (tree_stringops_values_to_profile): Likewise.

        * tree-tailcall.c (find_tail_calls): Use new CALL_EXPR iterator.
        (eliminate_tail_call): Likewise.

        * ipa-cp.c (ipcp_update_callgraph): Use new CALL_EXPR accessors.

        * tree-scalar-evolution.c (chrec_contains_symbols_defined_in_loop):
        Use TREE_OPERAND_LENGTH and generalize to handle any number of
        operands.
        (instantiate_parameters_1): Can't handle tcc_vl_exp here.

        * omp-low.c (build_omp_barrier): Use build_call_expr.
        (lower_rec_input_clauses): Likewise.
        (lower_reduction_clauses): Likewise.
        (expand_parallel_call): Likewise.
        (maybe_catch_exception): Likewise.
        (expand_omp_for_generic): Likewise.
        (expand_omp_for_static_nochunk): Likewise.
        (expand_omp_sections): Likewise.
        (lower_omp_single_simple): Likewise.
        (lower_omp_single_copy): Likewise.
        (lower_omp_master): Likewise.
        (lower_omp_ordered): Likewise.
        (lower_omp_critical): Likewise.

        * ipa-reference.c (check-call): Use new CALL_EXPR iterator.
        (scan_for_static_refs): Create tcc_vl_exp case for CALL_EXPR.

        * tree-gimple.c (is_gimple_call_addr): Fix doc.
        (recalculate_side_effects): Use TREE_OPERAND_LENGTH instead of
        TREE_CODE_LENGTH.  Add tcc_vl_exp case.

        * tree-chrec.c (chrec_contains_symbols): Use TREE_OPERAND_LENGTH
        and generalize to handle any number of operands.
        (chrec_contains_undetermined): Likewise.
        (tree_contains_chrecs): Likewise.
        (evolution_function_is_invariant_rec_p): Use TREE_OPERAND_LENGTH.

        * cgraphunit.c (update_call_expr): Use new CALL_EXPR accessors.

        * tree-ssa-ccp.c (ccp_fold): Use new CALL_EXPR accessors.  Use
        fold_call_expr instead of fold_builtin.
        (ccp_fold_builtin): Likewise.  Update calls into builtins.c to
        match declarations there.
        (fold_stmt): Use new CALL_EXPR constructor and accessors.  Doc
        updates.

        * tree-ssa-loop-ivopts.c (expr_invariant_in_loop_p): Use
        TREE_OPERAND_LENGTH instead of TREE_CODE_LENGTH.

        * ipa-pure-const.c (check_call): Use new CALL_EXPR accessors.
        (scan_function): Add case tcc_vl_exp for CALL_EXPR.

        * tree-stdarg.c (execute_optimize_stdarg): Use new CALL_EXPR
        accessors.

        * tree-ssa-math-opts.c (execute_cse_sincos_1): Use build_call_expr.
        (execute_cse_sincos): Use new CALL_EXPR accessors.

        * tree-ssa-alias.c (find_used_portions): Use new CALL_EXPR iterator.

        * gimple-low.c (lower_function_body): Use build_call_expr.
        (lower_builtin_setjmp): Likewise.

        * expr.c (emit_block_move_via_libcall): Use build_call_expr.
        (set_storage_via_libcall): Likewise.
        (safe_from_p): Add tcc_vl_exp case.  Use TREE_OPERAND_LENGTH
        instead of TREE_CODE_LENGTH.
        (expand_expr_real_1): Use new CALL_EXPR accessors.

        * tree-browser.c (store_child_info): Use TREE_OPERAND_LENGTH and
        generalize to handle any number of operands.
        (TB_parent_eq): Likewise.

        * predict.c (expr_expected_value): Use new CALL_EXPR accessors.
        (strip_builtin_expect): Likewise.

        * function.c (gimplify_parameters): Use build_call_expr.

        * tree-vectorizer.c (vect_is_simple_reduction): Use TREE_OPERAND_LENGTH
        instead of TREE_CODE_LENGTH.

        * ipa-type-escape.c (check_call): Use new CALL_EXPR iterators.
        (scan_for_refs): Add case tcc_vl_exp for CALL_EXPR.

        * tree-data-ref.c (get_references_in_stmt): Use new CALL_EXPR
        iterators.

        * gimplify.c (build_stack_save_restore): Use build_call_expr.
        (gimplify_decl_expr): Likewise.
        (gimplify_call_expr): Use fold_call_expr instead of fold_builtin.
        Use new CALL_EXPR iterators.
        (gimplify_modify_expr_to_memcpy): Use build_call_expr.
        (gimplify_modify_expr_to_memset): Likewise.
        (gimplify_variable_sized_compare): Likewise.
        (gimplify_omp_atomic_fetch_op): Likewise.
        (gimplify_omp_atomic_pipeline): Likewise.
        (gimplify_omp_atomic_mutex): Likewise.
        (gimplify_function_tree): Likewise.

        * calls.c (alloca_call_p): Use new CALL_EXPR accessors.
        (call_expr_flags): Likewise.
        (expand_call): Likewise.

        * except.c (expand_builtin_eh_return_data_regno): Pass entire
        CALL_EXPR as parameter instead of arglist.  Use new CALL_EXPR
        accessors.

        * coverage.c (create_coverage): Use build_call_expr.

        * tree-ssa-pre.c (expression_node_pool, list_node_pool): Delete.
        (temp_call_expr_obstack): New.
        (pool_copy_list): Delete.
        (temp_copy_call_expr): New.
        (phi_translate): Add case tcc_vl_exp for CALL_EXPR.  Use new
        CALL_EXPR accessors.  Get rid of special goo for copying argument
        lists and use temp_copy_call_expr instead.
        (valid_in_sets): Add case tcc_vl_exp for CALL_EXPR.  Use new
        CALL_EXPR accessors.
        (create_expression_by_pieces): Likewise.  Use build_call_array
        to construct the result instead of fold_build3.
        (create_value_expr_from): Add tcc_vl_exp.  Delete special goo for
        dealing with argument lists.
        (init_pre): Remove references to expression_node_pool and
        list_node_pool.  Init temp_call_expr_obstack instead.
        (fini_pre): Remove references to expression_node_pool and
        list_node_pool.

        * tree-sra.c (sra_walk_call_expr): Use new CALL_EXPR accessors
        and walk arguments explicitly instead of as a list.

        * tree-mudflap.c (mf_build_check_statement_for): Use build_call_expr.
        (mx_register_decls): Likewise.
        (mudflap_register_call): Likewise.
        (mudflap_finish_file): Likewise.

        * ipa-prop.c (ipa_callsite_compute_count): Use new CALL_EXPR accessors.
        (ipa_callsite_compute_param): Likewise.

        * tree-vect-patterns.c (vect_recog_pow_pattern): Use new CALL_EXPR
        accessors and constructor.

        * tree-nested.c (convert_nl_goto_reference): Use new CALL_EXPR
        accessors and constructor.
        (convert_tramp_reference): Likewise.
        (convert_call_expr): Likewise.
        (finalize_nesting_tree_1): Likewise.

        * tree-ssa.c (tree_ssa_useless_type_conversion): Use new CALL_EXPR
        accessors.

        * tree-ssa-loop-prefetch.c (issue_prefetch_ref): Use build_call_expr.

        * tree-inline.c (initialize_inlined_parameters): Pass entire
        CALL_EXPR as parameter instead of arglist.  Use new CALL_EXPR
        accessors.
        (estimate_num_insns_1): Use new CALL_EXPR accessors.
        (expand_call_inline): Tidy up call to initialize_inlined_parameters.

        * tree-vect-transform.c (vect_create_epilog_for_reduction):  Use
        TREE_OPERAND_LENGTH instead of TREE_CODE_LENGTH.
        (vectorizable_reduction): Likewise.
        (vectorizable_call): Use new CALL_EXPR iterators.
        (vectorizable_conversion): Use build_call_expr.
        (vectorizable_operation): Use TREE_OPERAND_LENGTH.
        (vect_gen_widened_results_half): Use build_call_expr.
        (vect_setup_realignment): Likewise.
        (vectorizable_live_operation): Use TREE_OPERAND_LENGTH.

        * tree-object-size.c (alloc_object_size): Use new CALL_EXPR accessors.
        (pass_through_call): Likewise.
        (compute_object_sizes): Likewise.  Use fold_call_expr instead of
        fold_builtin.

        * tree-profile.c (tree_gen_interval_profiler): Use build_call_expr.
        (tree_gen_pow2_profiler): Likewise.
        (tree_gen_one_value_profiler): Likewise.
        (tree_gen_ic_func_profiler): Likewise.
        (tree_gen_average_profiler): Likewise.
        (tree_gen_ior_profiler): Likewise.

        * tree-ssa-structalias.c (get_constraint_for): Add case tcc_vl_exp.
        (find_func_aliases): Use new CALL_EXPR accessors.  Add case
        tcc_vl_exp.  Use TREE_OPERAND_LENGTH instead of TREE_CODE_LENGTH.

        * tree-ssa-reassoc.c (get_rank): Use TREE_OPERAND_LENGTH instead
        of TREE_CODE_LENGTH.

        * stmt.c (warn_if_unused_value): Use TREE_OPERAND_LENGTH instead
        of TREE_CODE_LENGTH.

        * convert.c (convert_to_real): Use new CALL_EXPR accessors and
        constructor.
        (convert_to_integer): Likewise.

        * tree-ssa-operands.c (get_call_expr_operands): Use new CALL_EXPR
        accessors.

2007-02-15  Sandra Loosemore  <sandra@codesourcery.com>
            Brooks Moses  <brooks.moses@codesourcery.com>
            Lee Millward  <lee.millward@codesourcery.com>

        * config/alpha/alpha.c (alpha_expand_builtin): Use new CALL_EXPR
        accessors.
        * config/frv/frv.c (frv_expand_builtin): Likewise.
        * config/s390/s390.c (s390_expand_builtin): Likewise.

        * config/sparc/sparc.c (sparc_gimplify_va_arg): Use build_call_expr.
        (sparc_expand_builtin): Use new CALL_EXPR accessors.

        * config/i386/i386.c (ix86_function_ok_for_sibcall): Likewise.
        (ix86_expand_binop_builtin): Pass entire CALL_EXPR as parameter
        instead of arglist.  Use new CALL_EXPR accessors on it.  Fix callers.
        (ix86_expand_store_builtin): Likewise.
        (ix86_expand_unop_builtin): Likewise.
        (ix86_expand_unop1_builtin): Likewise.
        (ix86_expand_sse_compare): Likewise.
        (ix86_expand_sse_comi): Likewise.
        (ix86_expand_vec_init_builtin): Likewise.
        (ix86_expand_vec_ext_builtin): Likewise.
        (ix86_expand_vec_set_builtin): Likewise.
        (ix86_expand_builtin): Use new CALL_EXPR accessors.

        * config/sh/sh.c (sh_expand_builtin): Use new CALL_EXPR accessors.
        * config/c4x/c4x.c (c4x_expand_builtin): Likewise.

        * config/iq2000/iq2000.c (expand_one_builtin): Pass entire CALL_EXPR
        instead of arglist.  Use new CALL_EXPR accessors.  Fix callers.
        (iq2000_expand_builtin): Use new CALL_EXPR accessors.

        * config/rs6000/rs6000-c.c (altivec_build_resolved_builtin): Use
        build_call_expr.
        * config/rs6000/rs6000.c (rs6000_gimplify_va_arg): Likewise.
        (rs6000_expand_unop_builtin): Pass entire CALL_EXPR instead of
        arglist.  Use new CALL_EXPR accessors.  Fix callers.
        (altivec_expand_abs_builtin): Likewise.
        (rs6000_expand_binop_builtin): Likewise.
        (altivec_expand_predicate_builtin): Likewise.
        (altivec_expand_lv_builtin): Likewise.
        (spe_expand_stv_builtin): Likewise.
        (altivec_expand_stv_builtin): Likewise.
        (rs6000_expand_ternop_builtin): Likewise.
        (altivec_expand_ld_builtin): Use new CALL_EXPR accessors.
        (altivec_expand_st_builtin): Likewise.
        (altivec_expand_dst_builtin): Likewise.
        (altivec_expand_vec_init_builtin): Pass entire CALL_EXPR instead of
        arglist.  Use new CALL_EXPR accessors.  Fix callers.
        (altivec_expand_vec_set_builtin): Likewise.
        (altivec_expand_vec_ext_builtin): Likewise.
        (altivec_expand_builtin): Use new CALL_EXPR accessors.
        (spe_expand_builtin): Likewise.
        (spe_expand_predicate_builtin): Pass entire CALL_EXPR instead of
        arglist.  Use new CALL_EXPR accessors.  Fix callers.
        (spe_expand_evsel_builtin): Likewise.
        (rs6000_expand_builtin): Use new CALL_EXPR accessors.  VCFUX and
        FCFSX cases must construct whole new CALL_EXPR, not just arglist.

        * config/arm/arm.c (arm_expand_binop_builtin): Pass entire CALL_EXPR
        instead of arglist.  Use new CALL_EXPR accessors.  Fix callers.
        (arm_expand_unop_builtin): Likewise.
        (arm_expand_builtin): Use new CALL_EXPR accessors.

        * config/mips/mips.c (mips_expand_builtin):  Use new CALL_EXPR
        accessors.

        * config/bfin/bfin.c (bfin_expand_binop_builtin): Pass entire CALL_EXPR
        instead of arglist.  Use new CALL_EXPR accessors.  Fix callers.
        (bfin_expand_unop_builtin): Likewise.
        (bfin_expand_builtin): Use new CALL_EXPR accessors.

2007-02-15  Sandra Loosemore  <sandra@codesourcery.com>
            Brooks Moses  <brooks.moses@codesourcery.com>
            Lee Millward  <lee.millward@codesourcery.com>

        * c-semantics.c (build_stmt): Add internal diagnostic check.

        * c-pretty-print.c (pp_c_postfix_expression): Use new CALL_EXPR
        accessors.  Print arguments explicitly instead of as a list.

        * c-typeck.c (build_function_call): Use new CALL_EXPR constructors.

        * c-omp.c (c_finish_omp_barrier): Use build_call_expr.
        (c_finish_omp_flish): Likewise.

        * c-common.c (verify_tree): Use new CALL_EXPR accessors.  Traverse
        arguments explicitly instead of as a list.  Use TREE_OPERAND_LENGTH
        instead of TREE_CODE_LENGTH.
        (check_function_arguments_recurse): Use new CALL_EXPR accessors.
        (c_warn_unused_result): Likewise.

2007-02-15  Manuel Lopez-Ibanez  <manu@gcc.gnu.org>

        PR c/26494
        * doc/invoke.texi (Warning Options): Remove
        -Werror-implicit-function-declaration.
        (Wimplicit-function-declaration): Update description.
        * opts.c (common_handle_option): Move handling of -Werror=* to...
        (enable_warning_as_error): ...here.
        * opts.h (enable_warning_as_error): Declare.
        * c-decl.c (implicit_decl_warning): Unless
        -Wno-implicit-function-declaration is given, emit a pedwarn if
        -std=c99 or emit a warning if -Wimplicit-function-declaration.
        * c.opt (Wimplicit-function-declaration): Replace
        mesg_implicit_function_declaration with
        warn_implicit_function_declaration.
        * c-opts.c (c_common_handle_option):
        -Werror-implicit-function-declaration is exactly equal as
        -Werror=implicit-function-declaration.
        (set_Wimplicit): Replace mesg_implicit_function_declaration with
        warn_implicit_function_declaration.
        (c_common_post_options): -Wimplict-function-declaration is enabled
        by default by -std=c99, otherwise is disabled by default.
        * c-objc-common.c (c_objc_common_init): Remove flawed logic.

2007-02-15  Eric Botcazou  <ebotcazou@adacore.com>

        * gimplify.c (gimplify_modify_expr): During gimplification, attach a
        DECL on the rhs to a DECL on the lhs for debug info purposes if the
        former is ignored but not the latter.

2007-02-15  Eric Botcazou  <ebotcazou@adacore.com>

        * expr.c (expand_expr_real_1) <normal_inner_ref>: If a temporary
        is made and the reference doesn't use the alias set of its type,
        do not create the temporary using that type.

2007-02-15  Aldy Hernandez  <aldyh@redhat.com>

        * jump.c: Remove prototypes for delete_computation and
        delete_prior_computation.

2007-02-15  Paolo Bonzini  <bonzini@gnu.org>

        * jump.c (get_label_after): Delete.
        (get_label_before, delete_computation, delete_jump,
        delete_prior_computation, follow_jumps): Move...
        * reorg.c (delete_computation, delete_prior_computation): ... here...
        (get_label_before, delete_jump): ... making these static ...
        (follow_jumps): ... and simplifying this since it only runs after
        reload.
        * rtl.h (get_label_after, get_label_before, delete_jump,
        follow_jumps): Delete prototypes.

2007-02-15  Paolo Bonzini  <bonzini@gnu.org>

        * caller-save.c (save_call_clobbered_regs): Do not process sibcalls.

2007-02-15  Nick Clifton  <nickc@redhat.com>

        * varasm.c (default_asm_output_anchor): Prepend * to . symbol in
        order to prevent it from being munged by the target.

2007-02-15  Uros Bizjak  <ubizjak@gmail.com>

        * config/i386/i386.md: Remove misleading comment.

2007-02-15  Alexandre Oliva  <aoliva@redhat.com>

        * config/frv/frv.md (reload_incc, reload_outcc, reload_incc_uns,
        reload_outcc_uns, reload_incc_nz, reload_outcc_nz): Remove
        invalid patterns.

2007-02-15  Alexandre Oliva  <aoliva@redhat.com>

        * tree-sra.c (instantiate_missing_elements): Canonicalize
        bit-field types.
        (sra_build_assignment): New.
        (generate_copy_inout, generate_element_copy,
        generate_element_zero, generate_one_element_init): Use it.

2007-02-15  Alexandre Oliva  <aoliva@redhat.com>

        * tree-sra.c (instantiate_missing_elements): Canonicalize
        bit-field types.
        (sra_build_assignment): New.
        (generate_copy_inout, generate_element_copy,
        generate_element_zero, generate_one_element_init): Use it.

2007-02-15  Alexandre Oliva  <aoliva@redhat.com>

        * dwarf2out.c (dwarf2out_finish): Accept namespaces as context of
        limbo die nodes.

2007-02-14  Joseph Myers  <joseph@codesourcery.com>

        * emit-rtl.c (set_mem_attributes_minus_bitpos): Treat complex
        types as aggregates not scalars.
        * function.c (assign_stack_temp_for_type): Likewise.

2007-02-14  Roger Sayle  <roger@eyesopen.com>
            Zdenek Dvorak  <dvorakz@suse.cz>

        * tree-dump.c (dump_switch_p_1): Require exact match of the option
        name.

2007-02-14  Zdenek Dvorak  <dvorakz@suse.cz>

        * passes.c (next_pass_1): Clear the next field of the copied
        pass structure.

2007-02-14  Richard Henderson  <rth@redhat.com>

        * tree-sra.c (early_sra): New.
        (decl_can_be_decomposed_p): Deny va_list if early_sra.
        (tree_sra_early, pass_sra_early): New.
        * tree-pass.h (pass_sra_early): Declare.
        * passes.c (init_optimization_passes): Use it.

2007-02-14  Richard Guenther  <rguenther@suse.de>

        * flags.h (issue_strict_overflow_warning): Convert to a macro.

2007-02-14  Dorit Nuzman  <dorit@il.ibm.com>

         PR tree-optimization/30771
        * tree-vect-analyze.c (vect_determine_vectorization_factor): Traverse
        also phi nodes.
        (vect_analyze_operations): Induction phis can now be marked as
        used_in_loop.
        (vect_mark_stmts_to_be_vectorized): No special treatment for phis.
        Update documentation accordingly.

2007-02-14  Nick Clifton  <nickc@redhat.com>

        * builtin-types.def (DEF_FUNCTION_TYPE_x): Do not imply that at
        most 3 arguments are supported.
        (DEF_FUNCTION_TYPE_VAR_5): Fix typo in its description.

2007-02-13  Seongbae Park <seongbae.park@gmail.com>

        * bitmap.c (bitmap_and, bitmap_and_compl, bitmap_xor):
        Ensure dst->current is valid.

2007-02-13  Paul Brook  <paul@codesourcery.com>

        * config.gcc: Add arm*-*-uclinux-*eabi.
        * config/arm/uclinux-elf.h (TARGET_OS_CPP_BUILTINS): Define.
        (SUBTARGET_EXTRA_LINK_SPEC): Define.
        (STARTFILE_SPEC, ENDFILE_SPEC): Remove broken -shared handling.
        (LINK_GCC_C_SEQUENCE_SPEC): Undef.
        (LINK_SPEC): Define.
        (LIB_SPEC): Define.
        * config/arm/arm.c (arm_override_options): Use r9 as EABI PIC
        register.
        * config/arm/uclinux-eabi.h: New file.
        * config/arm/linux-eabi.h (WCHAR_TYPE): Remove.
        * config/arm/linux-gas.h (WCHAR_TYPE): Use unsigned long on AAPCS
        based targets.

2007-02-13  Ian Lance Taylor  <iant@google.com>

        * common.opt: Add Wstrict-overflow and Wstrict-overflow=.
        * flags.h (warn_strict_overflow): Declare.
        (enum warn_strict_overflow_code): Define.
        (issue_strict_overflow_warning): New static inline function.
        * opts.c (warn_strict_overflow): New variable.
        (common_handle_option): Handle OPT_Wstrict_overflow and
        OPT_Wstrict_overflow_.
        * c-opts.c (c_common_handle_option): Set warn_strict_overflow for
        OPT_Wall.
        * fold-const.c: Include intl.h.
        (fold_deferring_overflow_warnings): New static variable.
        (fold_deferred_overflow_warning): New static variable.
        (fold_deferred_overflow_code): New static variable.
        (fold_defer_overflow_warnings): New function.
        (fold_undefer_overflow_warnings): New function.
        (fold_undefer_and_ignore_overflow_warnings): New function.
        (fold_deferring_overflow_warnings_p): New function.
        (fold_overflow_warning): New static function.
        (make_range): Add strict_overflow_p parameter.  Change all
        callers.
        (extract_muldiv, extract_muldiv_1): Likewise.
        (fold_unary) [ABS_EXPR]: Check ABS_EXPR before calling
        tree_expr_nonnegative_p.
        (fold_negate_expr): Call fold_overflow_warning.
        (fold_range_test): Likewise.
        (fold_comparison): Likewise.
        (fold_binary): Likewise.  Call tree_expr_nonnegative_warnv_p
        instead of tree_expr_nonnegative_p.
        (tree_expr_nonnegative_warnv_p): Rename from
        tree_expr_nonnegative_p, add strict_overflow_p parameter.
        (tree_expr_nonnegative_p): New function.
        (tree_expr_nonzero_warnv_p): Rename from tree_expr_nonzero_p, add
        strict_overflow_p parameter.
        (tree_expr_nonzero_p): New function.
        * passes.c (verify_interpass_invariants): New static function.
        (execute_one_pass): Call it.
        * tree-ssa-loop-niter.c (expand_simple_operations): Ignore fold
        warnings.
        (number_of_iterations_exit, loop_niter_by_eval): Likewise.
        (estimate_numbers_of_iterations): Likewise.
        (scev_probably_wraps_p): Likewise.
        * tree-ssa-ccp.c: Include "toplev.h".
        (evaluate_stmt): Defer fold overflow warnings until we know we are
        going to optimize.
        (struct fold_stmt_r_data): Add stmt field.
        (fold_stmt_r): Defer fold overflow warnings until we know we
        optimized.
        (fold_stmt): Initialize stmt field of fold_stmt_r_data.
        (fold_stmt_inplace): Likewise.
        * tree-cfgcleanup.c: Include "toplev.h" rather than "errors.h".
        (cleanup_control_expr_graph): Defer fold overflow warnings until
        we know we are going to optimize.
        * tree-cfg.c (fold_cond_expr_cond): Likewise.
        * tree-ssa-threadedge.c (simplify_control_stmt_condition):
        Likewise.
        * tree-vrp.c (vrp_expr_computes_nonnegative): Call
        tree_expr_nonnegative_warnv_p instead of tree_expr_nonnegative_p.
        * tree-ssa-loop-manip.c (create_iv): Likewise.
        * c-typeck.c (build_conditional_expr): Likewise.
        (build_binary_op): Likewise.
        * tree-vrp.c (vrp_expr_computes_nonzero): Call
        tree_expr_nonzero_warnv_p instead of tree_expr_nonzero_p.
        (extract_range_from_unary_expr): Likewise.
        * simplify-rtx.c (simplify_const_relational_operation): Warn when
        assuming that signed overflow does not occur.
        * c-common.c (pointer_int_sum): Ignore fold overflow warnings.
        * tree.h (tree_expr_nonnegative_warnv_p): Declare.
        (fold_defer_overflow_warnings): Declare.
        (fold_undefer_overflow_warnings): Declare.
        (fold_undefer_and_ignore_overflow_warnings): Declare.
        (fold_deferring_overflow_warnings_p): Declare.
        (tree_expr_nonzero_warnv_p): Declare.
        * doc/invoke.texi (Option Summary): Add -Wstrict-overflow to list
        of warning options.
        (Warning Options): Document -Wstrict-overflow.
        * Makefile.in (tree-ssa-threadedge.o): Depend on toplev.h.
        (tree-ssa-ccp.o): Likewise.
        (tree-cfgcleanup.o): Change errors.h dependency to toplev.h.
        (fold-const.o): Depend on intl.h.

2007-02-13  Ian Lance Taylor  <iant@google.com>

        PR middle-end/30751
        * lower-subreg.c (resolve_simple_move): Decompose subregs in
        addresses.

2007-02-13  Stuart Hastings  <stuart@apple.com>

        * gcc/config/i386/i386.md (fixuns_truncdfhi2): Require SSE2.

2007-02-13  Richard Henderson  <rth@redhat.com>

        * config/alpha/alpha.c (alpha_stdarg_optimize_hook): Strip
        handled_component_p before looking for the indirect_ref.

2007-02-13  Richard Henderson  <rth@redhat.com>

        * config/i386/i386.md (bswapsi_1): Rename from bswapsi2,
        remove flags clobber.
        (bswapsi2): New expander, emit code for !TARGET_BSWAP.
        (bswaphi_lowpart): New.
        (bswapdi2): Rename from bswapdi2_rex, remove flags clobber,
        remove TARGET_BSWAP test.  Delete expander of the same name.

        * optabs.c (widen_bswap, expand_doubleword_bswap): New.
        (expand_unop): Use them.

2007-02-13  Uros Bizjak  <ubizjak@gmail.com>

        * config/i386/i386.md (cmpdi_ccno_1_rex64, *cmpsi_ccno_1,
        *cmphi_ccno_1, *cmpqi_ccno_1, *movsi_xor, *movstricthi_xor,
        *movstrictqi_xor, *movdi_xor_rex64, *ashldi3_1_rex64,
        *ashldi3_cmp_rex64, *ashldi3_cconly_rex64, ashlsi3, *ashlsi3_1_zext,
        *ashlsi3_cmp, *ashlsi3_cconly, *ashlsi3_cmp_zext, *ashlhi3_1_lea,
        *ashlhi3_1, *ashlhi3_cmp, *ashlhi3_cconly, *ashlqi3_1_lea,
        *ashlqi3_1, *ashlqi3_cmp, *ashlqi3_cconly): Remove equivalent
        assembler dialect choice from asm templates.

2007-02-12  Richard Henderson  <rth@redhat.com>

        * config/i386/i386.md (fixuns_trunc<SSEMODEF>si_1): New insn.
        (fixuns_trunc<SSEMODEF>si2): Use it.
        * config/i386/sse.md (vec_setv4sf_0): Export.
        * config/i386/i386.c (ix86_build_const_vector): Export.
        (ix86_split_convert_uns_si_sse): Rename from
        ix86_expand_convert_uns_si_sse and rewrite as a splitter.
        * config/i386/i386-protos.h: Update.

2007-02-13  Manuel Lopez-Ibanez  <manu@gcc.gnu.org>

        PR c/29521
        * c-typeck.c (c_finish_return): Improve warning message.

2007-02-12  Manuel Lopez-Ibanez  <manu@gcc.gnu.org>

        * alias.c (find_symbolic_term): Delete unused function.

2007-02-12  Uros Bizjak  <ubizjak@gmail.com>

        * config/i386/i386.md (paritydi2, paritysi2): New expanders.
        (paritydi2_cmp, paritydi2_cmp): New insn and split patterns.
        (*parityhi2_cmp, *parityqi2_cmp): New insn patterns.

2007-02-12  Eric Botcazou  <ebotcazou@adacore.com>

        * tree.h (DECL_IGNORED_P): Document further effect for FUNCTION_DECL.
        * cgraphunit.c (cgraph_expand_function): If DECL_IGNORED_P is set on
        the function, temporarily point the debug interface to the null one.

2007-02-12  Eric Botcazou  <ebotcazou@adacore.com>

        * dwarf2out.c (round_up_to_align): New static function.
        (field_byte_offset): Use it to round the offset.

2007-02-12  Richard Henderson  <rth@redhat.com>

        * config/alpha/alpha.md (bswapsi2, bswapdi2): New.
        (inswl_const): Export.

2007-02-12  Richard Henderson  <rth@redhat.com>

        * calls.c (emit_library_call_value_1): If PROMOTE_MODE modifed the
        result mode of the libcall, convert back to outmode.

2007-02-12  Roger Sayle  <roger@eyesopen.com>

        * config/i386/i386.md (*bswapdi2_rex): Renamed from bswapdi2.
        (bswapdi2): New define_expand to implement 32-bit implementation.

2007-02-12  Nick Clifton  <nickc@redhat.com>

        * doc/invoke.texi (Overall Options): Document --help=.
        * gcc.c (target_help_flag): Rename to print_subprocess_flag.
        (cc1_options): Pass --help= on to cc1.
        (display_help): Add description of --help=.
        (process_command): Add code to handle --help=.  Allow translated
        --help and --target-help switches to be passed on to compiler
        sub-process.
        (main): Remove unused if statement.
        * opts.c (columns): Remove.
        (LEFT_COLUMN): Define.
        (wrap_help): Add columns argument.
        (print_filtered_help): Change parameters to be an include bitmask,
        an exclude bitmask, an any bitmask and the column width.  Move the
        code to display the params list here.  Add code to display the
        status of options rather than their descriptions if the quiet flag
        is not active.
        (print_specific_help): Change parameters to be an include bitmask,
        an exclude bitmask and an any bitmask.  Move code to look up the
        column width here.  Decide upon the title for an options listing.
        (common_handle_options): Add code to handle --help=.  Adapt code
        for --help and --target-help to use the revised form of the
        print_specific_help function.
        (print_help): Delete.
        (print_param_help): Delete.
        (print_switch): Delete.
        * opts.h (cl_lang_count): Add prototype.
        (CL_PARAMS, CL_WARNING, CL_OPTIMIZATION, CL_MIN_OPTION_CLASS,
        CL_MAX_OPTION_CLASS): New defines.
        * optc-gen.awk: Add construction of cl_lang_count.
        * c.opt: Add Warning attribute to warning options and Optimization
        attribute to optimization options.
        * common.opt: Likewise.
        Add --help=.
        Add -fhelp and -ftarget-help as aliases for the transformed --help
        and --target-help options.
        * opt-functions.awk: Add code to handle Warning and Optimization
        attributes.

2007-02-12  Richard Henderson  <rth@redhat.com>

        * config/alpha/constraints.md: New file.
        * config/alpha/alpha.c: Include tm-constrs.h.
        (alpha_const_ok_for_letter_p, alpha_const_double_ok_for_letter_p,
        alpha_extra_constraint): Remove.
        (alpha_emit_conditional_branch): Use satisfies_constraint_*.
        * config/alpha/alpha-protos.h: Update.
        * config/alpha/alpha.h (REG_CLASS_FROM_LETTER): Remove.
        (CONST_OK_FOR_LETTER_P, CONST_DOUBLE_OK_FOR_LETTER_P): Remove.
        (EXTRA_CONSTRAINT): Remove.
        * config/alpha/alpha.md: Include constraints.md.
        (adddi splitter): Use satisfies_constraint_*.
        * config/alpha/predicates.md (add_operand): Likewise.
        (sext_add_operand, addition_operation): Likewise.

2007-02-12  Dorit Nuzman  <dorit@il.ibm.com>

        PR tree-optimization/29145
        * tree-data-ref.c (base_addr_differ_p): Make us more conservative
        in our handling of restrict qualified pointers.

2007-02-12  Manuel Lopez-Ibanez  <manu@gcc.gnu.org>

        PR middle-end/7651
        * doc/invoke.texi (Wunused-value): Update description.
        (Wextra): Delete item.
        * opts.c (set_Wextra): Don't use the value of Wextra to set the
        value of Wunused-value.
        * c-typeck.c (c_process_expr_stmt): Don't check extra_warnings.
        (c_finish_stmt_expr): Don't check extra_warnings.
        (emit_side_effect_warnings): The caller is responsible to check
        warn_unused_value.

2007-02-11  Roger Sayle  <roger@eyesopen.com>
            Matt Thomas  <matt@3am-software.com>

        * simplify-rtx.c (simplify_relational_operation_1): Correct typo.

2007-02-11  Roger Sayle  <roger@eyesopen.com>

        * simplify-rtx.c (simplify_relational_operation_1): Optimize
        comparisons of POPCOUNT against zero.
        (simplify_const_relational_operation): Likewise.

2007-02-11  Manuel Lopez-Ibanez  <manu@gcc.gnu.org>

        * doc/invoke.texi (Wextra): Delete outdated paragraph.

2007-02-11  Manuel Lopez-Ibanez  <manu@gcc.gnu.org>

        * dwarf2out.c (root_type): Delete unused function.

2007-02-11  Manuel Lopez-Ibanez  <manu@gcc.gnu.org>

        * genattrtab.c (contained_in_p): Delete unused function.
        (write_expr_attr_cache): Likewise.

2007-02-11  Jan Hubicka  <jh@suse.cz>

        * ipa-inline.c (cgraph_edge_badness): Add "else" missing in the
        previous patch.

2007-02-11  Steven Bosscher  <steven@gcc.gnu.org>

        * fwprop.c (try_fwprop_subst): Use set_unique_reg_note
        to add the REG_EQ* note.
        * see.c (see_merge_one_use_extension): Likewise.
        * local-alloc.c (update_equiv_regs): Likewise.  Also don't
        turn REG_EQUAL notes into REG_EQUIV notes if the target
        register may have more than one set.
        * function.c (assign_parm_setup_reg): Use set_unique_reg_note.
        * gcse.c (try_replace_reg): Likewise.
        * alias.c (init_alias_analysis): Use find_reg_equal_equiv_note.
        * calls.c (fixup_tail_calls): Likewise.  Abort if there is
        more than one REG_EQUIV note.
        * reload1.c (gen_reload): Use set_unique_reg_note.

2007-02-11  Uros Bizjak  <ubizjak@gmail.com>

        * config/i386/i386.c (TARGET_VECTORIZE_BUILTIN_CONVERSION): Define.
        (ix86_builtin_conversion): New function.

2007-02-06  Mark Mitchell  <mark@codesourcery.com>

        PR target/29487
        * tree.h (DECL_REPLACEABLE_P): New macro.
        * except.c (set_nothrow_function_flags): Likewise.

2007-02-11  Tehila Meyzels  <tehila@il.ibm.com>
            Ira Rosen  <irar@il.ibm.com>
            Dorit Nuzman  <dorit@il.ibm.com>

        * doc/tm.texi (TARGET_VECTORIZE_BUILTIN_CONVERSION): New target hook.
        * targhooks.c (default_builtin_vectorized_conversion): New.
        * targhooks.h (default_builtin_vectorized_function): New declaration.
        * target.h (struct vectorize): Add builtin_conversion field.
        * tree-vectorizer.h (type_conversion_vec_info_type): New enum
        stmt_vec_info_type value.
        (vectorizable_conversion): New declaration.
        * tree-vect-analyze.c (vect_analyze_operations): Add
        vectorizable_conversion call.
        * target-def.h (TARGET_VECTORIZE_BUILTIN_CONVERSION): New.
        * tree-vect-transform.c (vectorizable_conversion): New function.
        (vect_transform_stmt): Add case for type_conversion_vec_info_type.
        * tree-vect-generic.c (expand_vector_operations_1): Consider correct
        mode.
        * config/rs6000/rs6000.c (rs6000_builtin_conversion): New.
        (TARGET_VECTORIZE_BUILTIN_CONVERSION): Defined.
        (rs6000_expand_builtin): Add handling a case of ALTIVEC_BUILTIN_VCFUX
        or ALTIVEC_BUILTIN_VCFSX.

2007-02-10  John David Anglin  <dave.anglin@nrc-cnrc.gc.ca>

        PR target/30634
        * pa.md (movdf): For 64-bit target, fail if operand 1 is a non-zero
        CONST_DOUBLE and operand 0 is a hard register.
        (movdi): For 64-bit target, remove code to force CONST_DOUBLE to
        memory.  Fail if operand 1 is a non-zero CONST_INT and operand 0
        is a hard floating-point register.

2007-02-10  Richard Henderson  <rth@redhat.com>
            Jakub Jelinek  <jakub@redhat.com>
            Alexandre Oliva  <aoliva@redhat.com>

        * Makefile.in (libgcc-support, libgcc.mvars): Add emutls.c.
        * builtin-types.def (BT_WORD): Make unsigned.
        (BT_FN_VOID_PTR_WORD_WORD_PTR): New.
        * builtins.def (BUILT_IN_EMUTLS_GET_ADDRESS): New.
        (BUILT_IN_EMUTLS_REGISTER_COMMON): New.
        * c-decl.c (grokdeclarator): Don't error if !have_tls.
        * c-parser.c (c_parser_omp_threadprivate): Likewise.
        * dwarf2out.c (loc_descriptor_from_tree_1): Don't do anything for
        emulated tls.
        * expr.c (emutls_var_address): New.
        (expand_expr_real_1): Expand emulated tls.
        (expand_expr_addr_expr_1): Likewise.
        * libgcc-std.ver: Add __emutls_get_address, __emutls_register_common.
        * output.h (emutls_finish): Declare.
        * toplev.c (compile_file): Call it.
        * tree-ssa-address.c (gen_addr_rtx): Check for const-ness of the
        address before wrapping in CONST.
        * varasm.c (emutls_htab, emutls_object_type): New.
        (EMUTLS_VAR_PREFIX, EMUTLS_TMPL_PREFIX): New.
        (get_emutls_object_name, get_emutls_object_type): New.
        (get_emutls_init_templ_addr, emutls_decl): New.
        (emutls_common_1, emutls_finish): New.
        (assemble_variable): When emulating tls, swap decls; generate
        constructor for the emutls objects.
        (do_assemble_alias): When emulating tls, swap decl and target name.
        (default_encode_section_info): Don't add SYMBOL_FLAG_TLS_SHIFT
        for emulated tls.
        * varpool.c (decide_is_variable_needed): Look at force_output.
        Recurse for emulated tls.
        (cgraph_varpool_remove_unreferenced_decls): Remove checks redundant
        with decide_is_variable_needed.
        * emutls.c: New file.
        * config/sparc/sol2.h (ASM_DECLARE_OBJECT_NAME): Only emit
        tls_object for real tls.

2007-02-10  Kaz Kojima  <kkojima@gcc.gnu.org>

        PR rtl-optimization/29599
        * reload1.c (eliminate_regs_in_insn): Take the destination
        mode into account when computing the offset.

2007-02-09  Stuart Hastings  <stuart@apple.com>
            Richard Henderson  <rth@redhat.com>

        * gcc/config/i386/i386.h (TARGET_KEEPS_VECTOR_ALIGNED_STACK): New.
        * gcc/config/i386/darwin.h: (TARGET_KEEPS_VECTOR_ALIGNED_STACK): New.
        * gcc/config/i386/i386.md (fixuns_trunc<mode>si2, fixuns_truncsfhi2,
        fixuns_truncdfhi2): New.
        (fix_truncsfdi_sse): Call ix86_expand_convert_sign_didf_sse.
        (floatunsdidf2): Call ix86_expand_convert_uns_didf_sse.
        (floatunssisf2): Add call to ix86_expand_convert_uns_sisf_sse.
        (floatunssidf2): Allow nonimmediate source.
        * gcc/config/i386/sse.md (movdi_to_sse): New.
        (vec_concatv2di): Drop '*'.
        * gcc/config/i386/i386-protos.h (ix86_expand_convert_uns_si_sse,
        ix86_expand_convert_uns_didf_sse, ix86_expand_convert_uns_sidf_sse,
        ix86_expand_convert_uns_sisf_sse, ix86_expand_convert_sign_didf_sse):
        New.
        * gcc/config/i386/i386.c (ix86_expand_convert_uns_si_sse,
        ix86_expand_convert_uns_didf_sse, ix86_expand_convert_uns_sidf_sse,
        ix86_expand_convert_uns_sisf_sse, ix86_expand_convert_sign_didf_sse,
        ix86_build_const_vector, ix86_expand_vector_init_one_nonzero): New.
        (ix86_build_signbit_mask): Fix decl of v, refactor to call
        ix86_build_const_vector.
        (x86_emit_floatuns): Rewrite.

2007-02-10  Manuel Lopez-Ibanez  <manu@gcc.gnu.org>

        * genautomata.c (longest_path_length): Delete unused function.
        (struct state): Delete unused longest_path_length.
        (UNDEFINED_LONGEST_PATH_LENGTH): Delete unused macro.
        (get_free_state): Delete unused.

2007-02-09  Jan Hubicka  <jh@suse.cz>

        * params.def (PARAM_INLINE_UNIT_GROWTH): Set to 30.
        * doc/invoke.texi (inline-unit-growth): Update default value.

        * Makefile.in (passes.o, ipa-inline.o): Add dependencies.
        * cgraphbuild.c (build_cgraph_edges): Compute frequencies.
        (rebuild_cgraph_edges): Likewise.
        * cgraph.c (cgraph_set_call_stmt): Add new argument frequency.
        (dump_cgraph_node): Dump frequencies.
        (cgraph_clone_edge): Add frequency scales.
        (cgraph_clone_node): Add freuqnecy.
        * cgraph.h (cgraph_edge): Add freuqnecy argument.
        (CGRAPH_FREQ_BASE, CGRAPH_FREQ_MAX): New constants.
        (cgraph_create_edge, cgraph_clone_edge, cgraph_clone_node): Update.
        * tree-pass.h (TODO_rebuild_frequencies): New constant.
        * cgraphunit.c (verify_cgraph_node): Verify frequencies.
        (cgraph_copy_node_for_versioning): Update call of cgraph_clone_edge.
        (save_inline_function_body): Likewise.
        * ipa-inline.c: inluce rtl.h
        (cgraph_clone_inlined_nods): Update call of cgraph_clone_node.
        (cgraph_edge_badness): Use frequencies.
        (cgraph_decide_recursive_inlining): Update clonning.
        (cgraph_decide_inlining_of_small_function): Dump frequency.
        * predict.c (estimate_bb_frequencies): Export.
        * predict.h (estimate_bb_frequencies): Declare.
        * tree-inline.c (copy_bb): Watch overflows.
        (expand_call_inline): Update call of cgraph_create_edge.
        (optimize_inline_calls): Use TODO flags to update frequnecies.
        * passes.h: Include predict.h
        (init_optimization_passes): Move profile ahead.
        (execute_function_todo): Handle TODO_rebuild_frequencies.

2007-02-09  Roger Sayle  <roger@eyesopen.com>

        * config/alpha/alpha.c (emit_insxl): Force the first operand of
        the insbl or inswl pattern into a register.

2007-02-09  Roger Sayle  <roger@eyesopen.com>

        * config/ia64/ia64.md (bswapdi2): New define_insn.

2007-02-09  Richard Henderson  <rth@redhat.com>

        * config/i386/constraints.md (Ym): New constraint.
        * config/i386/i386.md (movsi_1): Change Y2 to Yi constraints.
        (movdi_1_rex64): Split sse and xmm general register moves from
        memory move alternatives.  Use conditional register constraints.
        (movsf_1, movdf_integer): Likewise.
        (zero_extendsidi2_32, zero_extendsidi2_rex64): Likewise.
        (movdf_integer_rex64): New.
        (pushsf_rex64): Fix output constraints.
        * config/i386/sse.md (sse2_loadld): Split rm alternative, use Yi.
        (sse2_stored): Likewise.
        (sse2_storeq_rex64): New.
        * config/i386/i386.c (x86_inter_unit_moves): Enable for not
        amd and not generic.
        (ix86_secondary_memory_needed): Don't bypass TARGET_INTER_UNIT_MOVES
        for optimize_size.  Remove SF/DFmode hack.

2007-02-09  Dwarakanath Rajagopal  <dwarak.rajagopal@amd.com>

        * config/i386/driver-i386.c: Turn on -mtune=native for AMDFAM10.
        (bit_SSE4a): New.

2007-02-09  Nathan Sidwell  <nathan@codesourcery.com>
            Richard Sandiford  <richard@codesourcery.com>

        * config.gcc (m68010-*-netbsdelf*, m68k*-*-netbsdelf*)
        (m68k*-*-openbsd*, m68k-*-linux*): Set default_cf_cpu.
        (m68k-*-aout*, m68k-*-coff*, m68k-*-uclinux*, m68k-*-rtems*): Add
        m68k/t-mlib to tmake_file.
        (m68020-*-elf*, m68k-*-elf*): Likewise.  Add t-m68kbare as well.
        (m68k*-*-*): Use --with-arch to pick a default for --with-cpu.
        (m680[012]0-*-*, m68k*-*-*): Add support for --with-arch.
        Allow it to be cf or m68k.  Set m68k_arch_family.  If that
        variable is not empty, add t-$m68k_arch_family to tmake_file.
        Add t-mlibs to tmake_file.
        * doc/install.texi: Document --with-arch=m68k and --with-arch=cf.
        * config/m68k/t-cf: New file.
        * config/m68k/t-m68k: Likewise.
        * config/m68k/t-mlibs: Likewise.
        * config/m68k/t-m68kbare (MULTILIB_OPTIONS, MULTILIB_DIRNAMES)
        (MULTILIB_MATCHES, MULTILIB_EXCEPTIONS): Delete.
        (M68K_MLIB_DIRNAMES, M68K_MLIB_OPTIONS): Define.
        * config/m68k/t-m68kelf (MULTILIB_OPTIONS, MULTILIB_DIRNAMES)
        (MULTILIB_MATCHES, MULTILIB_EXCEPTIONS, LIBGCC, INSTALL_LIBGCC):
        Delete.
        * config/m68k/t-openbsd (MULTILIB_OPTIONS, LIBGCC): Delete.
        (INSTALL_LIBGCC): Delete.
        (M68K_MLIB_DIRNAMES, M68K_MLIB_OPTIONS): Define.
        * config/m68k/t-rtems (MULTILIB_OPTIONS, MULTILIB_DIRNAMES)
        (MULTILIB_MATCHES, MULTILIB_EXCEPTIONS): Delete.
        (M68K_MLIB_CPU): Define.
        * config/m68k/t-uclinux (MULTILIB_OPTIONS, MULTILIB_DIRNAMES)
        (MULTILIB_MATCHES, MULTILIB_EXCEPTIONS): Delete.
        (M68K_MLIB_CPU, M68K_MLIB_OPTIONS, M68K_MLIB_DIRNAMES): Define.

2007-02-09  Zdenek Dvorak  <dvorakz@suse.cz>
            Richard Guenther  <rguenther@suse.de>

        PR middle-end/23361
        * fold-const.c (fold_comparison): Handle obfuscated comparisons
        against INT_MIN/INT_MAX.
        * tree-ssa-loop-ivcanon.c (remove_empty_loop): Print to dump
        file if a loop is removed.

2007-02-09  Joseph Myers  <joseph@codesourcery.com>

        * calls.c (store_one_arg): Pass correct alignment to
        emit_push_insn for non-BLKmode values.
        * expr.c (emit_push_insn): If STRICT_ALIGNMENT, copy to an
        unaligned stack slot via a suitably aligned slot.

2007-02-08  DJ Delorie  <dj@redhat.com>

        * config/m32c/m32c.c (m32c_unpend_compare): Add default to silence
        warnings.
        (legal_subregs): Use unsigned char, make const.
        (m32c_illegal_subreg_p): Use ARRAY_SIZE.  Delete unused variables.

2007-02-08  Paul Brook  <paul@codesourcery.com>

        * config/arm/lib1funcs.asm (RETLDM): Pop directly into PC when no
        special interworking needed.

2007-02-08  Harsha Jagasia  <harsha.jagasia@amd.com>

        * config/i386/xmmintrin.h: Make inclusion of emmintrin.h
        conditional to __SSE2__.
        (Entries below should have been added to first ChangeLog
        entry for amdfam10 dated 2007-02-05)
        * config/i386/emmintrin.h: Generate #error if __SSE2__ is not
        defined.
        * config/i386/pmmintrin.h: Generate #error if __SSE3__ is not
        defined.
        * config/i386/tmmintrin.h: Generate #error if __SSSE3__ is not
        defined.

2007-02-08  DJ Delorie  <dj@redhat.com>

        * config/m32c/m32c-protos.h (m32c_illegal_subreg_p): New.
        * config/m32c/m32c.c (legal_subregs): New.
        (m32c_illegal_subreg_p): New.
        * config/m32c/predicates.md (m32c_any_operand): Use it to reject
        unsupported subregs of hard regs.

2007-02-08  Jan Hubicka  <jh@suse.cz>

        * tree-cfg.c (bsi_replace): Shortcut when replacing the statement with
        the same one; always update histograms.

2007-02-08  Diego Novillo  <dnovillo@redhat.com>

        * passes.c (init_optimization_passes): Tidy comment.

2007-02-08  Roger Sayle  <roger@eyesopen.com>

        * simplify-rtx.c (simplify_unary_operation_1) <POPCOUNT>: We can
        strip zero_extend, bswap and rotates from POCOUNT's argument.
        <PARITY>: Likewise, we can strip not, bswap, sign_extend,
        zero_extend and rotates from PARITY's argument.
        <BSWAP>: A byte-swap followed by a byte-swap is an identity.
        (simplify_const_unary_operation) <BSWAP>: Evaluate the byte-swap
        of an integer constant at compile-time.

2007-02-08  Diego Novillo  <dnovillo@redhat.com>

        PR 30562
        * tree-flow.h (struct var_ann_d): Remove field 'is_used'.
        Update all users.
        * tree-ssa-alias.c (compute_is_aliased): Remove.  Update all
        users.
        (init_alias_info):
        * tree-ssa-live.c (remove_unused_locals): Do not remove
        TREE_ADDRESSABLE variables.
        * tree-ssa-structalias.c (compute_points_to_sets): Tidy.
        * tree-ssa-operands.c (add_virtual_operand): Remove argument
        FOR_CLOBBER.  Update all users.
        If VAR has an associated alias set, add a virtual operand for
        it if no alias is found to conflict with the memory reference.

2007-02-07  Jan Hubicka  <jh@suse.cz>
            Robert Kidd <rkidd@crhc.uiuc.edu>

        * value-prof.c (visit_hist, free_hist): Return 1 instead of 0.

2007-02-07  Ian Lance Taylor  <iant@google.com>

        * lower-subreg.c (simple_move): Reject PARTIAL_INT modes.

2007-02-07  Roger Sayle  <roger@eyesopen.com>

        * config/rs6000/rs6000.md (ctz<mode>2, ffs<mode>2, popcount<mode>2,
        parity<mode>2, smulsi3_highpart, abstf2_internal, allocate_stack,
        tablejumpdi, movsi_to_cr_one): Remove constraints from
        define_expand's match_operands.

2007-02-07  Roger Sayle  <roger@eyesopen.com>

        * global.c (compute_regsets): Move declatation of "i" inside of
        #ifdef ELIMINABLE_REGS to avoid unused variable bootstrap failure.

2007-02-07  Jakub Jelinek  <jakub@redhat.com>

        PR c++/30703
        * gimplify.c (gimplify_scan_omp_clauses): Remove special casing
        of INDIRECT_REF <RESULT_DECL>.

        * config/i386/i386.c (override_options): Set PTA_SSSE3 for core2.

2007-02-06  J"orn Rennecke  <joern.rennecke@arc.com>
            Kaz Kojima  <kkojima@gcc.gnu.org>

        PR target/29746
        * config/sh/sh.c (expand_cbranchdi4): Use scratch register
        properly.
        (sh_initialize_trampoline): Add parentheses to avoid a warning.

2007-02-06  Zdenek Dvorak <dvorakz@suse.cz>

        * doc/loop.texi: Document possibility not to perform disambiguation
        of loops with multiple latches.
        * cfgloopmanip.c (alp_enum_p): Removed.
        (add_loop): Handle subloops.  Use get_loop_body_with_size.
        (create_preheader): Do not allow ENTRY_BLOCK_PTR to be preheader.
        * cfghooks.c (redirect_edge_and_branch_force): Set dominator for
        the new forwarder block.
        (make_forwarder_block): Only call new_bb_cbk if it is not NULL.
        Handle the case latch is NULL.
        * tree-ssa-dom.c (tree_ssa_dominator_optimize): Avoid cfg modifications
        when marking loop exits.
        * ifcvt.c (if_convert): Ditto.  Mark loop exits even if cfg cannot
        be modified.
        * loop-init.c (loop_optimizer_init): Do not modify cfg.  Call
        disambiguate_loops_with_multiple_latches.
        * tree-cfgcleanup.c (cleanup_tree_cfg_loop): Calculate dominators
        before fix_loop_structure.
        * cfgloop.c: Include pointer-set.h and output.h.
        (canonicalize_loop_headers, HEADER_BLOCK, LATCH_EDGE,
        update_latch_info, mfb_keep_just, mfb_keep_nonlatch): Removed.
        (get_loop_latch_edges, find_subloop_latch_edge_by_profile,
        find_subloop_latch_edge_by_ivs, find_subloop_latch_edge,
        mfb_redirect_edges_in_set, form_subloop, merge_latch_edges,
        disambiguate_multiple_latches, get_loop_body_with_size,
        disambiguate_loops_with_multiple_latches): New functions.
        (flow_loop_dump): Dump multiple latch edges.
        (flow_loop_nodes_find): Handle loops with multiple latches.
        (flow_loops_find): Ditto. Do not call canonicalize_loop_headers.
        (glb_enum_p): Modified.
        (get_loop_body): Use get_loop_body_with_size.
        * cfgloop.h (LOOPS_HAVE_RECORDED_EXITS): New flag.
        (AVOID_CFG_MODIFICATIONS): New constant.
        (disambiguate_loops_with_multiple_latches, add_loop,
        get_loop_body_with_size): Declare.
        * Makefile.in (cfgloop.o): Add pointer-set.h and output.h.

2007-02-06  Seongbae Park <seongbae.park@gmail.com>

        PR inline-asm/28686
        * global.c (compute_regsets): New function.
        (global_alloc): Refactored ELIMINABLE_REGSET
        and NO_GLOBAL_ALLOC_REGS computation out.
        (rest_of_handle_global_alloc): Call compute_regsets()
        for non-optimizing case.

2007-02-06  Richard Henderson  <rth@redhat.com>

        * config/i386/constraints.md (Y2): Rename from Y.
        (Yi): New constraint.
        * config/i386/i386.md (movsi_1, movdi_2, pushdf_nointeger,
        pushdf_integer, movdf_nointeger, movdf_integer, zero_extendsidi2_32,
        zero_extendsidi2_rex64, truncxfdf2_mixed): Change Y constraints to Y2.
        (extendsfdf2_mixed, extendsfdf2_sse, truncdfsf_fast_mixed,
        truncdfsf_fast_sse, truncdfsf_mixed, fix_truncdfdi_sse,
        fix_truncdfsi_sse, floatsidf2_mixed, floatsidf2_sse,
        floatdidf2_mixed, floatdidf2_sse, absnegdf2_mixed,
        absnegdf2_sse, sse_setccdf, fop_df_comm_mixed, fop_df_comm_sse,
        fop_df_1_mixed, fop_df_1_sse): Change Y constraints to x.
        * config/i386/mmx.md (mov<MMXMODEI>_internal_rex64,
        mov<MMXMODEI>_internal, movv2sf_internal_rex64, movv2sf_internal,
        vec_extractv2si_1): Change Y constraints to Y2.
        * config/i386/sse.md (vec_setv4sf_0, vec_concatv2df, vec_dupv4si,
        vec_dupv2di, sse2_concatv2si, vec_concatv4si_1, vec_concatv2di):
        Change Y constraints to Y2.
        (sse2_loadld): Change Y constraints to x.

2007-02-06  Roger Sayle  <roger@eyesopen.com>

        * config/rs6000/rs6000.md (popcount<mode>2): Rewrite.
        (parity<mode>2): New define_expand using rs6000_emit_parity.
        * config/rs6000/rs6000.c (rs6000_emit_popcount,
        rs6000_emit_parity): New functions.
        * config/rs6000/rs6000-protos.h (rs6000_emit_popcount,
        rs6000_emit_parity): Prototype here.

2007-02-06  Ian Lance Taylor  <iant@google.com>

        * lower-subreg.c (simple_move_operand): Reject CONST.
        (resolve_clobber): Call validate_change rather than directly
        assigning to XEXP (pat, 0).

2006-02-06  Paolo Bonzini  <bonzini@gnu.org>

        * Makefile.in (tree-ssa-loop-ivopts.o): Add pointer-set.h dependency.
        (tree-ssa-reassoc.o): Add pointer-set.h dependency.
        (tree-cfg.o): Remove hashtab.h dependency.

        * tree-ssa-loop-ivopts.c: Include pointer-set.h.
        (struct ivopts_data): Change niters to pointer_map_t.
        (struct nfe_cache_elt, nfe_hash, nfe_eq): Delete.
        (niter_for_exit): Create pointer_map on demand.  Change for
        pointer_map API.
        (tree_ssa_iv_optimize_init): Initialize data->niters to NULL.
        (free_loop_data): Destroy data->niters if created and reset field.
        (tree_ssa_iv_optimize_finalize): Don't delete data->niters here.
        (tree_ssa_iv_optimize_loop): Check for presence of stale data.

        * tree-ssa-reassoc.c: Include pointer-set.h.
        (bb_rank): Change to long *.
        (operand_rank): Change to pointer_map_t.
        (find_operand_rank): Return long, -1 if not found.  Declare as inline.
        (insert_operand_rank): Accept long.
        (operand_entry_hash, operand_entry_eq): Remove.
        (get_rank): Return long.  Adjust for changes above.
        (init_reassoc): Change rank type to long.  Adjust creation of bb_rank
        and operand_rank.
        (fini_reassoc): Delete operand_rank with pointer_map_destroy.

        * tree-ssa-structalias.c (vi_for_tree): Change to pointer_map.
        (struct tree_vi, tree_vi_t, tree_vi_hash, tree_vi_eq): Delete.
        (insert_vi_for_tree): Rewrite for pointer_map API.  Assert argument
        is not NULL.
        (lookup_vi_for_tree): Rewrite for pointer_map API.  Return varinfo_t
        directly since it cannot be NULL.
        (get_vi_for_tree): Rewrite for pointer_map API.
        (find_what_p_points_to): Adjust for change to lookup_vi_for_tree.
        (init_alias_vars): Create vi_for_tree as pointer_map.
        (delete_points_to_sets): Delete vi_for_tree using pointer_map_destroy.

        * tree-cfg.c: Don't include hashtab.h.
        (edge_to_cases): Declare as pointer_map.
        (struct edge_to_cases_elt, edge_to_cases_hash, edge_to_cases_eq):
        Delete.
        (edge_to_cases_cleanup): Rewrite as pointer_map_traverse callback.
        (start_recording_case_labels): Create edge_to_cases as pointer_map.
        (end_recoding_case_labels): Cleanup edge_to_cases manually before
        destroying it.
        (record_switch_edge): Delete.
        (get_cases_for_edge): Adjust for pointer_map API, inline
        record_switch_edge (rewritten for new API), remove goto.

2006-02-06  Paolo Bonzini  <bonzini@gnu.org>

        * Makefile.in (tree-nested.o): Add pointer-set.h dependency.
        * tree-nested.c: Include pointer-set.h.
        (var_map_elt, var_map_eq, var_map_hash): Delete.
        (struct nesting_info): Remove GTY marker.  Change the two htab_t's
        to pointer_map_t's.
        (nesting_info_bitmap_obstack): New.
        (lookup_field_for_decl): Adjust for pointer_map API.
        (lookup_tramp_for_decl): Adjust for pointer_map API.
        (get_nonlocal_debug_decl): Adjust for pointer_map API.
        (get_local_debug_decl): Adjust for pointer_map API.
        (convert_nl_goto_reference): Adjust for pointer_map API.
        (convert_nl_goto_receiver): Adjust for pointer_map API.
        (create_nesting_tree): Create outside GGC space.  Create bitmap on
        the new obstack.  Create field_map and var_map as pointer_maps.
        (free_nesting_tree): Adjust for changes to create_nesting_tree.
        (root): Delete.
        (lower_nested_functions): Move root here, no need to NULL it.
        Initialize and release the obstack.

2007-02-06  Paolo Bonzini  <bonzini@gnu.org>

        * tree.c (tree_int_map_hash, tree_int_map_eq, tree_int_map_marked_p):
        Remove prototypes and make them non-static.
        (struct tree_int_map): Remove.
        * tree.h (struct tree_int_map): Move here, turning TO into an
        unsigned int.
        (tree_int_map_hash, tree_int_map_eq, tree_int_map_marked_p): Declare.

        * tree.h (TREE_COMPLEXITY): Remove.
        (struct tree_exp): Remove complexity field.
        * tree.c (build1_stat): Don't set it.

2007-02-06  Dorit Nuzman  <dorit@il.ibm.com>
            Victor Kaplansky  <victork@il.ibm.com>

        * tree-vectorizer.c (vect_is_simple_use): Support induction.
        (vect_is_simple_reduction): Support reduction with induction as
        one of the operands.
        (vect_is_simple_iv_evolution): Fix formatting.
        * tree-vect-analyze.c (vect_mark_stmts_to_be_vectorized): Fix
        formatting.  Don't mark induction phis for vectorization.
        (vect_analyze_scalar_cycles): Analyze all inductions, then reductions.
        * tree-vect-transform.c (get_initial_def_for_induction): New function.
        (vect_get_vec_def_for_operand): Support induction.
        (vect_get_vec_def_for_stmt_copy): Fix formatting and add check for
        induction case.
        (vectorizable_reduction): Support reduction with induction as one of
        the operands.
        (vectorizable_type_demotion): Use def-type of stmt argument rather
        than dummy def-type.

        * tree-ssa-loop.c (gate_scev_const_prop): Return the value of
        flag_tree_scev_cprop.
        * common.opt (tree-scev-cprop): New flag.

        * tree-vect-transform.c (vect_create_destination_var): Use 'kind' in
        call to vect_get_new_vect_var.

2007-02-06  Ira Rosen  <irar@il.ibm.com>

        * tree-vect-patterns.c (vect_recog_widen_mult_pattern): Check that
        vectype is not NULL.
        (vect_pattern_recog_1): Likewise.

2007-02-05  Kaveh R. Ghazi  <ghazi@caip.rutgers.edu>

        * fold-const.c (negate_expr_p): Handle CONJ_EXPR.
        (fold_negate_expr): Likewise.

2007-02-05  Alexandre Oliva  <aoliva@redhat.com>

        PR debug/30189
        * dwarf2out.c (modified_type_die): Follow DECL_ORIGINAL_TYPE
        even if cv-qualification is the same.

2007-02-05  Geoffrey Keating  <geoffk@apple.com>

        * config/rs6000/darwin-tramp.asm (__trampoline_setup): Call
        __enable_execute_stack on completion.

2007-02-05  Harsha Jagasia  <harsha.jagasia@amd.com>

        * config/i386/athlon.md (athlon_fldxf_k8, athlon_fld_k8,
        athlon_fstxf_k8, athlon_fst_k8, athlon_fist, athlon_fmov,
        athlon_fadd_load, athlon_fadd_load_k8, athlon_fadd, athlon_fmul,
        athlon_fmul_load, athlon_fmul_load_k8, athlon_fsgn,
        athlon_fdiv_load, athlon_fdiv_load_k8, athlon_fdiv_k8,
        athlon_fpspc_load, athlon_fpspc, athlon_fcmov_load,
        athlon_fcmov_load_k8, athlon_fcmov_k8, athlon_fcomi_load_k8,
        athlon_fcomi, athlon_fcom_load_k8, athlon_fcom): Added amdfam10.

2007-02-05  Harsha Jagasia  <harsha.jagasia@amd.com>

        * config/i386/i386.md (x86_sahf_1, cmpfp_i_mixed, cmpfp_i_sse,
        cmpfp_i_i387, cmpfp_iu_mixed, cmpfp_iu_sse, cmpfp_iu_387,
        swapsi, swaphi_1, swapqi_1, swapdi_rex64, fix_truncsfdi_sse,
        fix_truncdfdi_sse, fix_truncsfsi_sse, fix_truncdfsi_sse,
        x86_fldcw_1, floatsisf2_mixed, floatsisf2_sse, floatdisf2_mixed,
        floatdisf2_sse, floatsidf2_mixed, floatsidf2_sse,
        floatdidf2_mixed, floatdidf2_sse, muldi3_1_rex64, mulsi3_1,
        mulsi3_1_zext, mulhi3_1, mulqi3_1, umulqihi3_1, mulqihi3_insn,
        umulditi3_insn, umulsidi3_insn, mulditi3_insn, mulsidi3_insn,
        umuldi3_highpart_rex64, umulsi3_highpart_insn,
        umulsi3_highpart_zext, smuldi3_highpart_rex64,
        smulsi3_highpart_insn, smulsi3_highpart_zext, x86_64_shld,
        x86_shld_1, x86_64_shrd, sqrtsf2_mixed, sqrtsf2_sse,
        sqrtsf2_i387, sqrtdf2_mixed, sqrtdf2_sse, sqrtdf2_i387,
        sqrtextendsfdf2_i387, sqrtxf2, sqrtextendsfxf2_i387,
        sqrtextenddfxf2_i387): Added amdfam10_decode.

        * config/i386/athlon.md (athlon_idirect_amdfam10,
        athlon_ivector_amdfam10, athlon_idirect_load_amdfam10,
        athlon_ivector_load_amdfam10, athlon_idirect_both_amdfam10,
        athlon_ivector_both_amdfam10, athlon_idirect_store_amdfam10,
        athlon_ivector_store_amdfam10): New define_insn_reservation.
        (athlon_idirect_loadmov, athlon_idirect_movstore): Added
        amdfam10.

2007-02-05  Harsha Jagasia  <harsha.jagasia@amd.com>

        * config/i386/athlon.md (athlon_call_amdfam10,
        athlon_pop_amdfam10, athlon_lea_amdfam10): New
        define_insn_reservation.
        (athlon_branch, athlon_push, athlon_leave_k8, athlon_imul_k8,
        athlon_imul_k8_DI, athlon_imul_mem_k8, athlon_imul_mem_k8_DI,
        athlon_idiv, athlon_idiv_mem, athlon_str): Added amdfam10.

2007-02-05  Harsha Jagasia  <harsha.jagasia@amd.com>

        * config/i386/athlon.md (athlon_sseld_amdfam10,
        athlon_mmxld_amdfam10, athlon_ssest_amdfam10,
        athlon_mmxssest_short_amdfam10): New define_insn_reservation.

2007-02-05  Harsha Jagasia  <harsha.jagasia@amd.com>

        * config/i386/athlon.md (athlon_sseins_amdfam10): New
        define_insn_reservation.
        * config/i386/i386.md (sseins): Added sseins to define_attr type
        and define_attr unit.
        * config/i386/sse.md: Set type attribute to sseins for insertq
        and insertqi.

2007-02-05  Harsha Jagasia  <harsha.jagasia@amd.com>

        * config/i386/athlon.md (sselog_load_amdfam10, sselog_amdfam10,
        ssecmpvector_load_amdfam10, ssecmpvector_amdfam10,
        ssecomi_load_amdfam10, ssecomi_amdfam10,
        sseaddvector_load_amdfam10, sseaddvector_amdfam10): New
        define_insn_reservation.
        (ssecmp_load_k8, ssecmp, sseadd_load_k8, seadd): Added amdfam10.

2007-02-05  Harsha Jagasia  <harsha.jagasia@amd.com>

        * config/i386/athlon.md (cvtss2sd_load_amdfam10,
        cvtss2sd_amdfam10, cvtps2pd_load_amdfam10, cvtps2pd_amdfam10,
        cvtsi2sd_load_amdfam10, cvtsi2ss_load_amdfam10,
        cvtsi2sd_amdfam10, cvtsi2ss_amdfam10, cvtsd2ss_load_amdfam10,
        cvtsd2ss_amdfam10, cvtpd2ps_load_amdfam10, cvtpd2ps_amdfam10,
        cvtsX2si_load_amdfam10, cvtsX2si_amdfam10): New
        define_insn_reservation.

        * config/i386/sse.md (cvtsi2ss, cvtsi2ssq, cvtss2si,
        cvtss2siq, cvttss2si, cvttss2siq, cvtsi2sd, cvtsi2sdq,
        cvtsd2si, cvtsd2siq, cvttsd2si, cvttsd2siq,
        cvtpd2dq, cvttpd2dq, cvtsd2ss, cvtss2sd,
        cvtpd2ps, cvtps2pd): Added amdfam10_decode attribute.

2007-02-05  Harsha Jagasia  <harsha.jagasia@amd.com>

        * config/i386/athlon.md (athlon_ssedivvector_amdfam10,
        athlon_ssedivvector_load_amdfam10, athlon_ssemulvector_amdfam10,
        athlon_ssemulvector_load_amdfam10): New define_insn_reservation.
        (athlon_ssediv, athlon_ssediv_load_k8, athlon_ssemul,
        athlon_ssemul_load_k8): Added amdfam10.

2007-02-05  Harsha Jagasia  <harsha.jagasia@amd.com>

        * config/i386/i386.h (TARGET_SSE_UNALIGNED_MOVE_OPTIMAL): New macro.
        (x86_sse_unaligned_move_optimal): New variable.

        * config/i386/i386.c (x86_sse_unaligned_move_optimal): Enable for
        m_AMDFAM10.
        (ix86_expand_vector_move_misalign): Add code to generate movupd/movups
        for unaligned vector SSE double/single precision loads for AMDFAM10.

2007-02-05  Harsha Jagasia  <harsha.jagasia@amd.com>

        * config/i386/i386.h (TARGET_AMDFAM10): New macro.
        (TARGET_CPU_CPP_BUILTINS): Add code for amdfam10.
        Define TARGET_CPU_DEFAULT_amdfam10.
        (TARGET_CPU_DEFAULT_NAMES): Add amdfam10.
        (processor_type): Add PROCESSOR_AMDFAM10.

        * config/i386/i386.md: Add amdfam10 as a new cpu attribute to match
        processor_type in config/i386/i386.h.
        Enable imul peepholes for TARGET_AMDFAM10.

        * config.gcc: Add support for --with-cpu option for amdfam10.

        * config/i386/i386.c (amdfam10_cost): New variable.
        (m_AMDFAM10): New macro.
        (m_ATHLON_K8_AMDFAM10): New macro.
        (x86_use_leave, x86_push_memory, x86_movx, x86_unroll_strlen,
        x86_cmove, x86_3dnow_a, x86_deep_branch, x86_use_simode_fiop,
        x86_promote_QImode, x86_integer_DFmode_moves,
        x86_partial_reg_dependency, x86_memory_mismatch_stall,
        x86_accumulate_outgoing_args, x86_arch_always_fancy_math_387,
        x86_sse_partial_reg_dependency, x86_sse_typeless_stores,
        x86_use_ffreep, x86_use_incdec, x86_four_jump_limit,
        x86_schedule, x86_use_bt, x86_cmpxchg16b, x86_pad_returns):
        Enable/disable for amdfam10.
        (override_options): Add amdfam10_cost to processor_target_table.
        Set up PROCESSOR_AMDFAM10 for amdfam10 entry in
        processor_alias_table.
        (ix86_issue_rate): Add PROCESSOR_AMDFAM10.
        (ix86_adjust_cost): Add code for amdfam10.

2007-02-05  Harsha Jagasia  <harsha.jagasia@amd.com>

        * config/i386/i386.opt: Add new Advanced Bit Manipulation (-mabm)
        instruction set feature flag. Add new (-mpopcnt) flag for popcnt
        instruction. Add new SSE4A (-msse4a) instruction set feature flag.
        * config/i386/i386.h: Add builtin definition for SSE4A.
        * config/i386/i386.md: Add support for ABM instructions
        (popcnt and lzcnt).
        * config/i386/sse.md: Add support for SSE4A instructions
        (movntss, movntsd, extrq, insertq).
        * config/i386/i386.c: Add support for ABM and SSE4A builtins.
        Add -march=amdfam10 flag.
        * config/i386/ammintrin.h: Add support for SSE4A intrinsics.
        * doc/invoke.texi: Add documentation on flags for sse4a, abm, popcnt
        and amdfam10.
        * doc/extend.texi: Add documentation for SSE4A builtins.

2007-02-05  Bob Wilson  <bob.wilson@acm.org>

        * config/xtensa/xtensa.c (constantpool_mem_p): Skip over SUBREGs.

2007-02-05  Richard Guenther  <rguenther@suse.de>

        * tree-vectorizer.h (vectorizable_function): Add argument type
        argument, change return type.
        * tree-vect-patterns.c (vect_recog_pow_pattern): Adjust caller.
        * tree-vect-transform.c (vectorizable_function): Handle extra
        argument, return vectorized function decl.
        (build_vectorized_function_call): Remove.
        (vectorizable_call): Handle calls with result and argument types
        differing.  Handle loop vectorization factor correctly.
        * targhooks.c (default_builtin_vectorized_function): Adjust for
        extra argument.
        * targhooks.h (default_builtin_vectorized_function): Likewise.
        * target.h (builtin_vectorized_function): Add argument type
        argument.
        * config/i386/i386.c (ix86_builtin_vectorized_function): Handle
        extra argument, allow vectorizing of lrintf.
        * doc/tm.texi (TARGET_VECTORIZE_BUILTIN_VECTORIZED_FUNCTION): Adjust
        documentation of target hook.

2007-02-05  Hans-Peter Nilsson  <hp@axis.com>

        PR target/30665
        * config/cris/cris.md ("*andsi_movu", "*andsi_clear", "*andhi_movu")
        ("*andhi_clear", andu (casesi+45)): For size-changed operand where
        memory is allowed, require !side_effects_p, not just !MEM_VOLATILE_P.

2007-02-05  Roger Sayle  <roger@eyesopen.com>

        * fold-const.c (fold_unary) <REAL_PART>: Test for availability of
        BUILT_IN_COS before simplifying REAL_PART(CEXPI)) to COS.
        <IMAG_PART>: Likewise, check for availability of BUILT_IN_SIN.
        * builtins.c (fold_builtin_sincos): Check for TARGET_C99_FUNCTIONS
        before canonicalizing sincos to cexpi.
        (fold_builtin_cexp): Likewise, for canonicalizing cexp to cexpi.

2007-02-05  Roger Sayle  <roger@eyesopen.com>

        * config/alpha/alpha.c (alpha_add_builtins): New Helper function.
        Set TREE_READONLY and TREE_NOTHROW directly, not via attributes.
        (alpha_init_builtins): Use alpha_add_builtins to process tables.

2007-02-05  Roger Sayle  <roger@eyesopen.com>

        * mips-tfile.c (initialize_init_file): Correct endianness test.

2007-02-05  Kazu Hirata  <kazu@codesourcery.com>

        * config/m68k/m68k.md (pushdi-1, pushdi, movsi+1): Don't use
        the 'y' constraint.

2007-02-05  Richard Sandiford  <richard@codesourcery.com>

        * dwarf2out.c (dwarf2out_frame_debug_expr): Record the register
        saves in a PARALLEL before the register assignments.

2007-02-05  Richard Sandiford  <richard@codesourcery.com>

        * doc/tm.texi (DWARF_ALT_FRAME_RETURN_COLUMN): Do not require
        DWARF_FRAME_RETURN_COLUMN to be a general register.
        * dwarf2out.c (init_return_column_size): New function, split from...
        (expand_builtin_init_dwarf_reg_sizes): ...here.  Allow both
        DWARF_FRAME_RETURN_COLUMN and DWARF_ALT_FRAME_RETURN_COLUMN
        to be nongeneral registers.
        * config/m68k/m68k.h (DWARF_FRAME_REGNUM): Only map FP and
        integer registers.
        (DWARF_FRAME_REGISTERS, DWARF_FRAME_RETURN_COLUMN): Define.
        (DWARF_ALT_FRAME_RETURN_COLUMN): Define.

2007-02-04  Zdenek Dvorak <dvorakz@suse.cz>

        * cfgcleanup.c (try_optimize_cfg): Avoid removing ENTRY_BLOCK_PTR.

2007-02-04  Zdenek Dvorak <dvorakz@suse.cz>

        * cfgloopmanip.c (loop_delete_branch_edge): Removed.
        (remove_path): Use can_remove_branch_p and remove_branch instead
        of loop_delete_branch_edge.
        * tree-ssa-loop-manip.c (scale_dominated_blocks_in_loop): New function.
        (tree_transform_and_unroll_loop): Remove dead branches immediately.
        Update profile using scale_dominated_blocks_in_loop.
        * cfghooks.c (can_remove_branch_p, remove_branch): New functions.
        * cfghooks.h (struct cfg_hooks): Add can_remove_branch_p.
        (can_remove_branch_p, remove_branch): Declare.
        * tree-cfg.c (tree_can_remove_branch_p): New function.
        (tree_cfg_hooks): Add tree_can_remove_branch_p.
        * cfgrtl.c (rtl_can_remove_branch_p): New function.
        (rtl_cfg_hooks, cfg_layout_rtl_cfg_hook): Add rtl_can_remove_branch_p.

2007-02-05  Jan Hubicka  <jh@suse.cz>

        PR middle-end/30696
        * ipa-inline.c (cgraph_clone_inlined_nodes): When there are unanalyzed
        nodes in cgraph, don't remove offline copy of the function.

2007-02-04  Jan Hubicka  <jh@suse.cz>

        * tree-sra.c (sra_walk_expr): Add linebreaks. BITFIELD_REFs into
        vectors might cause maybe_lookup_element_for_expr to be called
        on non-sra-candidate.

2007-02-04  Kazu Hirata  <kazu@codesourcery.com>

        * config/bfin/bfin-modes.def, config/bfin/bfin.c,
        config/bfin/bfin.md, config/bfin/predicates.md: Follow
        spelling conventions.

2007-02-04  Richard Guenther  <rguenther@suse.de>

        PR middle-end/30636
        * fold-const.c (try_move_mult_to_index): Make sure to not
        overflow one dimension of a multi-dimensional array access.

2007-02-04  Jan Hubicka  <jh@suse.cz>

        * passes.c (init_optimization_passes): Reindent.

2007-02-04  Jan Hubicka  <jh@suse.cz>
            Eric Botcazou  <ebotcazou@adacore.com>

        * tree-optimize.c (has_abnormal_outgoing_edge_p): Move to...
        (execute_fixup_cfg): Break out the abnormal goto code.
        * tree-inline.c (has_abnormal_outgoing_edge_p): ...here.
        (make_nonlocal_label_edges): Move here from execute_fixup_cfg.
        (optimize_inline_calls): Call make_nonlocal_label_edges.

2007-02-04  Jan Hubicka  <jh@suse.cz>

        * tree-ssa-copyrename.c (copy_rename_partition_coalesce): Return
        true when something was changed.
        (rename_ssa_copies): When something was changed, do
        TODO_remove_unused_locals.
        * tree-ssa-forwprop.c (tree_ssa_forward_propagate_single_use_value):
        add TODO_remove_unused_locals when instruction was removed.

2007-02-04  Jan Hubicka  <jh@suse.cz>

        * ipa-inline.c (try_inline): Improve debug output; work on already
        inline edges too.
        (cgraph_decide_inlining_incrementally): Indent; improve debug output;
        call try_inline for already inlined edges too when flattening;
        inline also functions that make callee growth but overall unit size
        reduce.

2007-02-04  Kazu Hirata  <kazu@codesourcery.com>

        * config/m32c/bitops.md, config/m32c/jump.md,
        config/m32c/m32c.c, config/m32c/m32c.h, config/m32r/m32r.c,
        config/m32r/m32r.h, config/m32r/m32r.md,
        config/m32r/predicates.md, config/m68hc11/larith.asm,
        config/m68hc11/m68hc11.c, config/m68hc11/m68hc11.h,
        config/m68k/m68k.h, config/mcore/mcore.md, config/mips/4k.md,
        config/mips/mips-protos.h, config/mips/mips.c,
        config/mips/mips.h, config/mips/mips.md, config/mips/mips16.S,
        config/mn10300/mn10300.h, config/mn10300/predicates.md,
        config/mt/mt.c, config/mt/mt.h, config/mt/mt.md: Follow
        spelling conventions.

        * config/v850/v850.c, config/v850/v850.h, config/v850/v850.md:
        Follow spelling conventions.

2007-02-03  Douglas Gregor  <doug.gregor@gmail.com>

        * c-opts.c (c_common_post_options): If C++0x mode is enabled, don't
        warn about C++0x compatibility.

2007-02-04  Kazu Hirata  <kazu@codesourcery.com>

        * config/h8300/h8300.c, config/h8300/h8300.h,
        config/h8300/h8300.md: Follow spelling conventions.

2007-02-03  Uros Bizjak  <ubizjak@gmail.com>

        PR middle-end/30667
        * combine.c (try_combine): Do not substitute source operand
        with constants wider than 2 * HOST_BITS_PER_WIDE_INT.

2007-02-03  Jan Hubicka  <jh@suse.cz>

        PR gcov-profile/30650
        * value-prof.c (stringop_block_profile): Fix handling of size counter;
        do not divide by zero for never executed counters.
        (tree_find_values_to_profile): Fix counters.
        * gcov-ui.h (GCOV_COUNTER_AVERAGE, GCOV_COUNTER_IOR): Fix comments.

2007-02-03  Ian Lance Taylor  <iant@google.com>

        * lower-subreg.c (simple_move_operand): New static function,
        broken out of simple_move.  Reject LABEL_REF, SYMBOL_REF, and HIGH
        operands.
        (simple_move): Call simple_move_operand.
        (find_decomposable_subregs): Add special handling of MEMs.
        (can_decompose_p): Rename from cannot_decompose_p.  Reverse
        meaning of return value.  If we see a hard register, test whether
        it can store a word_mode value.  Change all callers.

2007-02-03  John David Anglin  <dave.anglin@nrc-cnrc.gc.ca>

        * pa.md (addvdi3, addvsi3, subvdi3, subvsi3, negvdi2, negvsi2): New
        ftrapv insns and expanders.
        (subdi3): Change define_expand operand 1 to arith11_operand, and
        operand 2 to reg_or_0_operand.  Change constraints of 64-bit insn
        pattern to handle reg_or_0 operands.  Revise 32-bit insn pattern to
        handle 11-bit constants and reg_or_0 operands in operands 1 and 2,
        respectively.

        PR middle-end/30174
        * varasm.c (notice_global_symbol): Treat global objects as weak when
        flag_shlib is true.

2007-02-03  Kaveh R. Ghazi  <ghazi@caip.rutgers.edu>

        * emit-rtl.c (dconstpi): Delete.
        (dconstsqrt2): New.
        (init_emit_once): Delete dconstpi and init dconstsqrt2.
        * real.h (dconstpi): Delete.
        (dconstsqrt2): New.
        * builtins.c (fold_builtin_cabs): Use dconstsqrt2.
        (fold_builtin_hypot): Likewise.

2007-02-03  Tom Tromey  <tromey@redhat.com>

        PR driver/30246
        * gcc.c (cpp_unique_options): Any of -ggdb3, -gstabs3,
        -gcoff3, -gxcoff3, -gvms3 implies -dD.

2007-02-03  Kazu Hirata  <kazu@codesourcery.com>

        * c-decl.c, config/avr/avr.c, config/avr/avr.h,
        config/m68k/m68k.c, config/m68k/netbsd-elf.h,
        config/mn10300/mn10300.c, config/pdp11/pdp11.h,
        config/rs6000/cell.md, config/rs6000/darwin.h,
        config/sh/sh.md, config/sh/sh4-300.md, config/spu/spu.c,
        config/spu/spu.md, cselib.c, expr.c, haifa-sched.c, hwint.h,
        jump.c, reload.c, sched-deps.c, sched-int.h, tree-inline.c,
        tree-profile.c, tree-ssa-live.h, tree-vrp.c: Fix comment
        typos.  Follow spelling conventions.
        * doc/invoke.texi: Follow spelling conventions.

2007-02-03  Roger Sayle  <roger@eyesopen.com>

        * simplify-rtx.c (simplify_relational_operation_1): Implement some
        canonicalization transformations that attempt to simplify integer
        constant comparisons to become comparisons against zero.

2007-02-03  Kaveh R. Ghazi  <ghazi@caip.rutgers.edu>

        * builtins.c (fold_builtin_cabs): Fold cabs(x+xi) into
        fabs(x)*sqrt(2).
        * fold-const.c (fold_binary): Fix comment typos.  Fold complex
        (x,0)-(0,y) into (x,-y).  Likewise (0,y)-(x,0) into (-x,y).

2007-02-02  Mike Stump  <mrs@apple.com>

        * config/darwin9.h (DARWIN_LINKER_GENERATES_ISLANDS): Add.
        * config/rs6000/rs6000.c (DARWIN_GENERATE_ISLANDS): Add.
        (output_call): Use DARWIN_GENERATE_ISLANDS to decide when to
        generate a branch island.

2007-02-02  Bob Wilson  <bob.wilson@acm.org>

        * config/xtensa/xtensa.c (smalloffset_mem_p): Use BASE_REG_P.
        (xtensa_legitimate_address_p): New.
        (xtensa_legitimize_address): New.
        (xtensa_output_addr_const_extra): New.
        * config/xtensa/xtensa.h (REG_OK_STRICT_FLAG): Define.
        (BASE_REG_P): New.
        (REG_OK_FOR_BASE_P): Use BASE_REG_P.
        (GO_IF_LEGITIMATE_ADDRESS): Move code to xtensa_legitimate_address_p.
        (LEGITIMIZE_ADDRESS): Move code to xtensa_legitimize_address.
        (OUTPUT_ADDR_CONST_EXTRA): Move code to xtensa_output_addr_const_extra.
        * config/xtensa/xtensa-protos.h (xtensa_legitimate_address_p): New.
        (xtensa_legitimize_address): New.
        (xtensa_output_addr_const_extra): New.

2007-02-02  Steve Ellcey  <sje@cup.hp.com>

        * config/ia64/ia64.c (ia64_print_operand): Fix compare strings.

2007-02-02  Ian Lance Taylor  <iant@google.com>

        * expmed.c (expand_divmod): Add comment.

2007-02-02  Kazu Hirata  <kazu@codesourcery.com>

        * emit-rtl.c (renumber_insns): Remove.
        * flags.h: Remove the extern for flag_renumber_insns.
        * rtl.h: Remove the prototype for renumber_insns.
        * toplev.c (flag_renumber_insns): Remove.

2007-02-02  Hui-May Chang  <hm.chang@apple.com>

        Revert for x86 darwin:
        2005-06-19  Uros Bizjak  <uros@kss-loka.si>

        * config/i386/i386.c (ix86_function_arg_regno_p): Put back the
        code before the following patch under TARGET_MACHO.
        (ix86_function_value_regno_p): Likewise.

2007-02-02  Kaveh R. Ghazi  <ghazi@caip.rutgers.edu>

        * fold-const.c (negate_expr_p, fold_negate_expr): Handle
        COMPLEX_EXPR.

2007-02-02  Maxim Kuvyrkov  <mkuvyrkov@ispras.ru>

        PR target/29682
        * config/ia64/ia64.c (ia64_speculate_insn): Restrict to memory loads to
        general or fp registers.  Add comments.
        * config/ia64/ia64.md (reg_pred_prefix): Add comment.

2007-02-02  Paolo Bonzini  <bonzini@gnu.org>

        * pointer-set.c (insert_aux): Only return insertion slot.
        (pointer_set_insert): Adjust.
        (pointer_set_traverse, struct pointer_map_t, pointer_map_create,
        pointer_map_destroy, pointer_map_insert, pointer_map_contains,
        pointer_map_traverse): New.
        * pointer-set.h (pointer_set_traverse, struct pointer_map_t,
        pointer_map_create,  pointer_map_destroy, pointer_map_insert,
        pointer_map_contains, pointer_map_traverse): Declare.

2007-02-02  Jakub Jelinek  <jakub@redhat.com>

        PR middle-end/30473
        * builtins.c (fold_builtin_sprintf): Do not attempt to optimize
        sprintf (str, "%s").  Do not optimize sprintf (str, "nopercent", p++).

2007-02-02  Maxim Kuvyrkov  <mkuvyrkov@ispras.ru>

        * sched-int.h (ds_to_dk, dk_to_ds): Declare functions.

        (struct _dep): New type.
        (dep_t): New typedef.
        (DEP_PRO, DEP_CON, DEP_KIND): New access macros.
        (DEP_STATUS): New access macro.  The macro with the same name was
        renamed to DEP_LINK_STATUS.
        (dep_init): Declare function

        (struct _dep_link): New type.
        (dep_link_t): New typedef.
        (DEP_LINK_NODE, DEP_LINK_NEXT, DEP_LINK_PREV_NEXTP): New access macros.
        (DEP_LINK_DEP, DEP_LINK_PRO, DEP_LINK_CON, DEP_LINK_KIND): New macros.
        (DEP_LINK_STATUS): New macro.
        (debug_dep_links): New debug function.

        (struct _deps_list): New type.
        (deps_list_t): New typedef.
        (DEPS_LIST_FIRST): New access macro.
        (FOR_EACH_DEP_LINK): New cycle macro.
        (create_deps_list, free_deps_list, delete_deps_list): Declare
        functions.
        (deps_list_empty_p, debug_deps_list, add_back_dep_to_deps_list): Ditto.
        (find_link_by_pro_in_deps_list, find_link_by_con_in_deps_list): Ditto.
        (copy_deps_list_change_con): Ditto.

        (move_dep_link): Declare function.

        (struct _dep_node): New type.
        (dep_node_t): New typedef.
        (DEP_NODE_BACK, DEP_NODE_DEP, DEP_NODE_FORW): New access macros.

        (struct haifa_insn_data.back_deps): New field to hold backward
        dependencies of the insn.
        (struct haifa_insn_data.depend): Rename to forw_deps.  Change its type
        to deps_list_t.
        (struct haifa_insn_data.resolved_deps): Rename to resolved_back_deps.
        Change its type to deps_list_t.
        (INSN_BACK_DEPS): New access macro to use instead of LOG_LINKS.
        (INSN_DEPEND): Rename to INSN_FORW_DEPS.
        (RESOLVED_DEPS): Rename to INSN_RESOLVED_BACK_DEPS.

        (INSN_COST): Move to haifa-sched.c.  Use insn_cost () instead.

        (DEP_STATUS): Rename to DEP_LINK_STATUS.  Fix typo in the comment.

        (add_forw_dep, delete_back_forw_dep, insn_cost): Update declaration and
        all callers.
        (dep_cost): Declare.

        * sched-deps.c (CHECK): New macro to (en/dis)able sanity checks.
        (ds_to_dk, dk_to_ds): New functions.

        (init_dep_1): New static function.
        (init_dep): New function.
        (copy_dep): New static function.

        (dep_link_consistent_p, attach_dep_link, add_to_deps_list): New static
        functions.
        (detach_dep_link): New static function.
        (move_dep_link): New function.

        (dep_links_consistent_p, dump_dep_links): New static functions.
        (debug_dep_links): New debugging function.

        (deps_obstack, dl_obstack, dn_obstack): New static variables.

        (alloc_deps_list, init_deps_list): New static functions.
        (create_deps_list): New function.
        (clear_deps_list): New static function.
        (free_deps_list, delete_deps_list, deps_list_empty_p): New functions.
        (deps_list_consistent_p, dump_deps_list): New static functions.
        (debug_deps_list): New function.
        (add_back_dep_to_deps_list, find_link_by_pro_in_deps_list): New
        functions.
        (find_link_by_con_in_deps_list, copy_deps_list_change_con): Ditto.

        (maybe_add_or_update_back_dep_1, add_or_update_back_dep_1): Update to
        use new scheduler dependencies lists.
        (add_back_dep, delete_all_dependences, fixup_sched_groups): Ditto.
        (sched_analyze): Ditto.  Initialize dependencies lists.
        (add_forw_dep, compute_forward_dependences): Update to use new
        scheduler dependencies lists.

        (init_dependency_caches): Init deps_obstack.
        (free_dependency_caches): Free deps_obstack.

        (adjust_add_sorted_back_dep, adjust_back_add_forw_dep): Update to use
        new scheduler dependencies lists.
        (delete_forw_dep, add_or_update_back_forw_dep): Ditto.
        (add_back_forw_dep, delete_back_forw_dep): Ditto.

        * sched-rgn.c (set_spec_fed, find_conditional_protection, is_pfree):
        Update to use new scheduler dependencies lists.
        (is_conditionally_protected, is_prisky, add_branch_dependences): Ditto.
        (debug_dependencies): Ditto.
        (schedule_region): Update comments.

        * sched-ebb.c (earliest_block_with_similiar_load): Update to use new
        scheduler dependencies lists.
        (schedule_ebb): Update comments.

        * rtl.def (DEPS_LIST): Remove.

        * lists.c (unused_deps_list): Remove.
        (free_list): Update assertions.

        (alloc_DEPS_LIST, free_DEPS_LIST_list, free_DEPS_LIST_node): Remove.
        (remove_free_DEPS_LIST_elem, copy_DEPS_LIST_list): Ditto.

        * rtl.h (free_DEPS_LIST_list, alloc_DEPS_LIST): Remove declarations.
        (remove_free_DEPS_LIST_elem, copy_DEPS_LIST_list): Ditto.

        * haifa-sched.c (comments): Update.
        (insn_cost1): Remove.  Inline the code into insn_cost ().
        (insn_cost): Update to use new scheduler dependencies lists.  Move
        processing of the dependency cost to dep_cost ().
        (dep_cost): New function.  Use it instead of insn_cost () when
        evaluating cost of the dependency.  Use compatible interface to
        interact with the target.
        (priority): Update to use new scheduler dependencies lists.
        (rank_for_schedule): Ditto.  Optimize heuristic that prefers the insn
        with greater number of insns that depend on the insn.
        (schedule_insn): Update to use new scheduler dependencies lists.  Add
        code to free backward dependencies lists.  Inline and optimize code
        from resolve_dep () - see PR28071.
        (ok_for_early_queue_removal): Update to use new scheduler dependencies
        lists.  Update call to targetm.sched.is_costly_dependence hook.

        (fix_inter_tick, try_ready, fix_tick_ready): Update to use new
        scheduler dependencies lists.

        (resolve_dep): Remove.  Move the logic to schedule_insn ().
        (init_h_i_d): Initialize dependencies lists.

        (process_insn_depend_be_in_spec): Rename to
        process_insn_forw_deps_be_in_spec.  Update to use new scheduler
        dependencies lists.
        (add_to_speculative_block, create_check_block_twin, fix_recovery_deps):
        Update to use new scheduler dependencies lists.
        (clear_priorities, calc_priorities, add_jump_dependencies): Ditto.

        * ddg.c (create_ddg_dependence, create_ddg_dep_no_link): Update to use
        new scheduler dependencies lists.
        (build_intra_loop_deps): Ditto.

        * target.h (struct _dep): Declare to use in
        gcc_target.sched.is_costly_dependence.
        (struct gcc_target.sched.adjust_cost): Fix typo.
        (struct gcc_target.sched.is_costly_dependence): Change signature to use
        single dep_t parameter instead of an equivalent triad.
        (struct gcc_target.sched.adjust_cost_2): Remove.

        * target-def.h (TARGET_SCHED_ADJUST_COST_2): Remove.

        * reg-notes.def (DEP_TRUE, DEP_OUTPUT, DEP_ANTI): Update comments.

        * doc/tm.texi (TARGET_SCHED_IS_COSTLY_DEPENDENCE): Update
        documentation.
        (TARGET_SCHED_ADJUST_COST_2): Remove documentation.

        * doc/rtl.texi (LOG_LINKS): Remove part about instruction scheduler.
        (REG_DEP_TRUE): Document.

        * config/ia64/ia64.c (ia64_adjust_cost_2): Rename to ia64_adjust_cost.
        Change signature to correspond to the targetm.sched.adjust_cost hook.
        Update use in TARGET_SCHED_ADJUST_COST_2.
        (TARGET_SCHED_ADJUST_COST_2): Rename to TARGET_SCHED_ADJUST_COST.
        (ia64_dependencies_evaluation_hook, ia64_dfa_new_cycle): Update to use
        new scheduler dependencies lists.
        (ia64_gen_check): Ditto.

        * config/mips/mips.c (vr4130_swap_insns_p): Update to use new scheduler
        dependencies lists.

        * config/rs6000/rs6000.c (rs6000_is_costly_dependence): Change
        signature to correspond to the targetm.sched.is_costly_dependence hook.
        (is_costly_group): Update to use new scheduler dependencies lists.

        * config/spu/spu.c (spu_sched_adjust_cost): Use insn_cost () function
        instead of INSN_COST () macro.

2007-02-01  Ian Lance Taylor  <iant@google.com>

        * lower-subreg.c (resolve_clobber): Handle a subreg of a concatn.

2007-02-01  Guy Martin  <gmsoft@gentoo.org>

        * pa.md (tp_load): Correct mfctl instruction syntax.

2007-02-01  Geoffrey Keating  <geoffk@apple.com>

        * config/rs6000/rs6000.c (rs6000_stack_info): Correct
        altivec_padding_size calculation on AIX.  Improve comment, add
        assert to verify that it's right.

        * config/rs6000/darwin.h (MD_UNWIND_SUPPORT): Don't define for
        64-bit.

2007-2-01  Seongbae Park  <seongbae.park@gmail.com>

        PR inline-asm/28686
        * global.c (global_alloc): Add mising initialization of
        ELIMINABLE_REGSET.

2007-02-01  Roger Sayle  <roger@eyesopen.com>

        * alias.c (init_alias_analysis): Correct whitespace.
        * bb-reorder.c (fix_edges_for_rarely_executed_code,
        partition_hot_cold_basic_blocks): Likewise.
        * builtins.c (expand_builtin_printf, expand_builtin_fprintf,
        expand_builtin_sprintf, fold_builtin_carg, fold_builtin_sprintf,
        maybe_emit_sprintf_chk_warning, fold_builtin_sprintf_chk,
        fold_builtin_snprintf_chk, fold_builtin_printf,
        fold_builtin_fprintf, do_mpfr_ckconv, do_mpfr_arg1, do_mpfr_arg2,
        do_mpfr_arg3, do_mpfr_sincos): Likewise.
        * cfgcleanup.c (cleanup_cfg): Likewise.
        * cfgexpand.c (tree_expand_cfg): Likewise.
        * fold-const.c (fold_binary) <RDIV_EXPR>: Likewise.
        * function.c (get_next_funcdef_no): Likewise.
        * gengtype.c (main): Likewise.
        * genmodes.c (main): Likewise.
        * gcse.c (bypass_conditional_jumps, print_ldst_list): Likewise.
        * haifa-sched.c (schedule_block, extend_h_i_d): Likewise.
        * ifcvt.c (noce_emit_move_insn): Likewise.
        * modulo-sched.c (generate_prolog_epilog, sms_schedule_by_order):
        Likewise.
        * stor-layout.c (get_best_mode): Likewise.
        * tree-ssa-loop-niter.c (get_val_for): Likewise.
        * tree-ssa-structalias.c (get_varinfo, get_varinfo_fc,
        scc_visit, do_ds_constraint, do_complex_constraint, label_visit,
        perform_var_substitution, solve_graph): Likewise.
        * tree-vrp.c (vrp_finalize): Likewise.

2007-02-01  Ian Lance Taylor  <iant@google.com>

        * lower-subreg.c (simplify_gen_subreg_concatn): If we ask for the
        high part of a paradoxical subreg, return a constant zero.

2007-02-01  Zdenek Dvorak <dvorakz@suse.cz>

        * toplev.c (lang_dependent_init): Call init_set_costs.
        * loop-init.c (loop_optimizer_init): Do not call init_set_costs.

2007-02-01  Richard Guenther  <rguenther@suse.de>

        PR middle-end/30656
        * fold-const.c (fold_negate_expr): Allow negating a
        constant if overflow does not change.

2007-02-01  Ralf Wildenhues  <Ralf.Wildenhues@gmx.de>

        * doc/c-tree.texi (Expression trees): Improve markup.
        * doc/tm.texi (Register Classes, Addressing Modes)
        (Floating Point): Fix spacing after abbreviations.  Fix some
        typos.

2007-02-01  Ben Elliston  <bje@au.ibm.com>

        * doc/invoke.texi: Replace "bugfix" with "bug fix" throughout.
        * doc/contrib.texi: Likewise.
        * doc/install.texi: Likewise.

2007-01-31  Richard Henderson  <rth@redhat.com>
            Ian Lance Taylor  <iant@google.com>

        * lower-subreg.c: New file.
        * rtl.def (CONCATN): Define.
        * passes.c (init_optimization_passes): Add pass_lower_subreg and
        pass_lower_subreg2.
        * emit-rtl.c (update_reg_offset): New static function, broken out
        of gen_rtx_REG_offset.
        (gen_rtx_REG_offset): Call update_reg_offset.
        (gen_reg_rtx_offset): New function.
        * regclass.c: Revert patch of 2006-03-05, restoring
        reg_scan_update.
        (clear_reg_info_regno): New function.
        * dwarf2out.c (concatn_loc_descriptor): New static function.
        (loc_descriptor): Handle CONCATN.
        * common.opt (fsplit_wide_types): New option.
        * opts.c (decode_options): Set flag_split_wide_types when
        optimizing.
        * timevar.def (TV_LOWER_SUBREG): Define.
        * rtl.h (gen_reg_rtx_offset): Declare.
        (reg_scan_update): Declare.
        * regs.h (clear_reg_info_regno): Declare.
        * tree-pass.h (pass_lower_subreg): Declare.
        (pass_lower_subreg2): Declare.
        * doc/invoke.texi (Option Summary): List -fno-split-wide-types.
        (Optimize Options): Add -fsplit-wide-types to -O1 list.  Document
        -fsplit-wide-types.
        * doc/rtl.texi (Regs and Memory): Document concat and concatn.
        * Makefile.in (OBJS-common): Add lower-subreg.o.
        (lower-subreg.o): New target.

2007-01-31  Kazu Hirata  <kazu@codesourcery.com>

        * config/sh/sh.h (HAVE_SECONDARY_RELOADS): Remove.

2007-01-31  Anatoly Sokolov <aesok@post.ru>

        PR target/19087
        * config/avr/avr.c (DWARF2_ADDR_SIZE): Define.

2007-01-31  Kaveh R. Ghazi  <ghazi@caip.rutgers.edu>

        PR middle-end/29335
        * builtins.c (fold_builtin_sqrt): Use MPFR for constant args.

2007-01-31  Zdenek Dvorak <dvorakz@suse.cz>

        * cfgloop.h: Include vec-prim.h.
        (enum li_flags): Remove LI_ONLY_OLD.
        (loop_iterator): Changed.
        (fel_next, fel_init): Iterate over loop tree.
        (FOR_EACH_LOOP_BREAK): New macro.
        * loop-unswitch.c (unswitch_loops): Do not pass LI_ONLY_OLD to
        FOR_EACH_LOOP.
        * tree-ssa-loop-unswitch.c (tree_ssa_unswitch_loops): Ditto.
        * modulo-sched.c (sms_schedule): Ditto.
        * tree-vectorizer.c (vectorize_loops): Ditto.
        * doc/loop.texi: Update information on loop numbering and behavior of
        FOR_EACH_LOOP wrto new loops.
        * tree-scalar-evolution.c (compute_overall_effect_of_inner_loop,
        add_to_evolution_1): Test nestedness of loops instead of comparing
        their numbers.
        * tree-chrec.c (chrec_fold_plus_poly_poly,
        chrec_fold_multiply_poly_poly, chrec_evaluate,
        hide_evolution_in_other_loops_than_loop, chrec_component_in_loop_num,
        reset_evolution_in_loop): Ditto.
        * Makefile.in (CFGLOOP_H): Add vecprim.h dependency.

2007-01-31  Dirk Mueller  <dmueller@suse.de>

        * c-common.c (warn_about_parentheses): Separate warning about
        un-parenthized sequence of comparison operators from the one
        which is supposed to warn about x <= y <= z.

2007-01-31  Uros Bizjak  <ubizjak@gmail.com>

        * optabs.h (enum optab_index): Add new OTI_isinf.
        (isinf_optab): Define corresponding macro.
        * optabs.c (init_optabs): Initialize isinf_optab.
        * genopinit.c (optabs): Implement isinf_optab using isinf?f2
        patterns.
        * builtins.c (mathfn_built_in): Handle BUILT_IN_ISINF{,F,L}.
        (expand_builtin_interclass_mathfn): Expand BUILT_IN_ISINF{,F,L}
        using isinf_optab.
        (expand_builtin): Expand BUILT_IN_ISINF{,F,L} using
        expand_builtin_interclass_mathfn.
        * reg_stack.c (subst_stack_regs_pat): Handle UNSPEC_FXAM.
        * config/i386/i386.md (UNSPEC_FXAM): New constant.
        (fxam<mode>2_i387): New insn pattern.
        (isinf<mode>2) New expander to implement isinf, isinff and isinfl
        built-in functions as x87 inline asm.

2007-01-31  Kazu Hirata  <kazu@codesourcery.com>

        * gcc/config/arm/unwind-arm.h (_sleb128_t, _uleb128_t): New.

2007-01-30  Eric Christopher  <echristo@apple.com>

        * config.gcc: Add geode.

2007-01-31  Kazu Hirata  <kazu@codesourcery.com>

        * cgraphunit.c, config/arm/arm.c, config/m68k/m68k.c,
        ipa-inline.c, tree-profile.c, tree-ssa-live.c,
        tree-ssa-math-opts.c, tree-ssanames.c, tree-vect-analyze.c,
        value-prof.c: Fix comment typos.

2007-01-30  Manuel Lopez-Ibanez  <manu@gcc.gnu.org>

        PR c++/24745
        * doc/invoke.texi (Wpointer-arith): Document warning.

2007-01-30  Janis Johnson  <janis187@us.ibm.com>

        * doc/extend.texi (Decimal Floating Types): Remove decfloat.h from
        the list of discrepancies from the draft TR.

2007-01-30  Dirk Mueller  <dmueller@suse.de>

        PR c++/30601
        * doc/invoke.texi (-Wreturn-type): Update description to
        match new behavior.

2007-01-30  Richard Sandiford  <richard@codesourcery.com>

        * cfgrtl.c (try_redirect_by_replacing_jump): Check only_sets_cc0_p.

2007-01-30  Uros Bizjak  <ubizjak@gmail.com>

        * builtins.c (expand_builtin_int_interclass_roundingfn): New function
        to handle optabs that operate on floating point input argument and
        output to integer output.
        (expand_builtin_mathfn) [BUILT_IN_ILOGB]: Move from here ...
        (expand_builtin_interclass_mathfn) [BUILT_IN_ILOGB]: ... to here.
        (expand_builtin): Expand BUILT_IN_ILOGB{,F,L} using
        expand_builtin_interclass_mathfn ().
        * config/i386/i386.md (fxtractxf3_i387): Rename from *fxtractxf3_i387.
        (ilogbsi2): Remove.
        (ilogbxf2, ilogb<mode>2): New expanders to implement ilogb, ilogbf and
        ilogbl built-in functions as x87 intrinsics.

2007-01-30  Richard Guenther  <rguenther@suse.de>

        PR middle-end/27657
        * dwarf2out.c (reference_to_unused): Query varpool if the
        variable was output.

2007-01-30  Richard Guenther  <rguenther@suse.de>

        PR middle-end/30313
        * passes.c (execute_one_pass): Reset in_gimple_form to not
        confuse non-unit-at-a-time mode.

2007-01-29  Roger Sayle  <roger@eyesopen.com>
            Richard Guenther  <rguenther@suse.de>

        * fold-const.c (round_up): Make HIGH an unsigned HOST_WIDE_INT to
        avoid undefined behaviour on overflow.  Use force_fit_type_double
        to construct the constant with the specified TREE_OVERFLOW.

2007-01-29  Janis Johnson  <janis187@us.ibm.com>

        * config/dfp-bit.c: Add parameterized support for fp exceptions.
        * config/dfp-bit.h: Ditto.

2007-01-29  Manuel Lopez-Ibanez  <manu@gcc.gnu.org>

        * c-decl.c (pop_scope): Replace warnings with call to
        warn_for_unused_label.
        * c-common.h (warn_for_unused_label): Declare.
        * c-common.c (warn_for_unused_label): Define.

2007-01-29  Manuel Lopez-Ibanez  <manu@gcc.gnu.org>

        * tree-optimize.c (update_inlined_to_pointers): Delete unused
        function.

2007-01-29  Janis Johnson  <janis187@us.ibm.com>

        * Makefile.in (USER_H): Remove decfloat.h.
        * ginclude/decfloat.h: Delete, moving contents to ...
        * ginclude/float.h: Add support for decimal floating point,
        guarded by __STDC_WANT_DEC_FP__.

2007-01-29  Mike Stump  <mrs@apple.com>

        * doc/gccint.texi (Top): Rename Loop Representation to Loop
        Analysis and Representation to resolve case insensitive conflict.
        * doc/loop.texi (Loop Analysis and Representation): Likewise.

2007-01-28  Daniel Berlin  <dberlin@dberlin.org>

        * tree.h (struct tree_memory_tag): Add aliases member.
        (MTAG_ALIASES): New macro.
        * tree-ssa-alias.c (alias_bitmap_obstack): New variable.
        (add_may_alias): Remove pointer-set. Update for may_aliases being
        a bitmap.
        (mark_aliases_call_clobbered): Update for may_aliases being a
        bitmap.
        (compute_tag_properties): Ditto.
        (create_partition_for): Ditto.
        (compute_memory_partitions): Ditto.
        (dump_may_aliases_for): Ditto.
        (is_aliased_with): Ditto.
        (add_may_alias_for_new_tag): Ditto.
        (rewrite_alias_set_for): Rewrite for may_aliases being a bitmap.
        (compute_is_aliased): New function.
        (compute_may_aliases): Call compute_is_aliased).
        (init_alias_info): Initialize alias_bitmap_obstack.
        (union_alias_set_into): New function.
        (compute_flow_sensitive_aliasing): Use union_aliases_into.
        (have_common_aliases_p): Rewrite to take two bitmaps and use
        intersection.
        (compute_flow_insensitive_aliasing): Stop using pointer-sets.
        Update for bitmaps.
        (finalize_ref_all_pointers): Update for add_may_alias changes.
        (new_type_alias): Ditto.
        * tree-flow-inline.h (may_aliases): Return a bitmap.
        * tree-dfa.c (dump_variable): Check for MTAG_P'ness.
        * tree-ssa.c (verify_flow_insensitive_alias_info): Update for
        may_aliases being a bitmap.
        * tree-flow.h (struct var_ann_d): Remove may_aliases member.
        may_aliases now returns a bitmap.
        * tree-ssa-structalias.c (merge_smts_into): Update for may_aliases
        being a bitmap.
        * tree-ssa-operands.c (add_virtual_operand): Update for
        may_aliases being a bitmap.

2007-01-29  Daniel Berlin  <dberlin@dberlin.org>

        PR tree-optimization/30630
        * tree-ssa-structalias.c (do_complex_constraint): Mark correct
        variable as changed.

2007-01-29  Simon Martin  <simartin@users.sourceforge.net>

        PR c++/28266
        * gimplify.c (gimplify_target_expr): Make sure that the TARGET_EXPR is
        expanded only once even if an error occurs.

2007-01-29  Ben Elliston  <bje@au.ibm.com>

        * gcov-io.h (__gcov_indirect_call_profiler): Declare.
        (__gcov_average_profiler): Likewise.
        (__gcov_ior_profiler): Likewise.
        (__gcov_merge_ior): Likewise.

2007-01-28  Jan Hubicka  <jh@suse.cz>

        * builtins.c (expand_builtin_memset): Fix typo in my last patch.
        * value-prof.c (stringop_block_profile): Likewise.

2007-01-28  Jan Hubicka  <jh@suse.cz>

        * expr.c (emit_block_move_via_movmem, emit_block_move_via_libcall): Add
        variant handling histograms; add wrapper.
        (clear_storage_via_libcall): Export.
        (emit_block_move_hints): Break out from ...; add histograms.
        (emit_block_move): ... this one.
        (clear_storage_hints): Break out from ...; add histograms.
        (clear_storage): ... this one.
        (set_storage_via_memset): Handle histogram.
        * expr.h (emit_block_move_via_libcall, emit_block_move_hints): Declare.
        (clear_storage_hints, clear_storage_via_libcall): Declare.
        (set_storage_via_setmem): Update prototype.
        * doc/md.texi (movmem, setmem): Document new arguments.

        * value-prof.c (dump_histogram_value, tree_find_values_to_profile): Add
        new histograms.
        (stringop_block_profile): New global function.
        (tree_stringops_values_to_profile): Profile block size and alignment.
        * value-prof.h (enum hist_type): add HIST_TYPE_AVERAGE and
        HIST_TYPE_IOR.
        (struct profile_hooks): Add gen_average_profiler and gen_ior_profiler.
        (stringop_block_profile): Declare.
        * builtins.c: Include value-prof.h.
        (expand_builtin_memcpy, expand_builtin_memset): Pass block profile.
        * gcov-ui.h (GCOV_COUNTER_NAMES): Add new counter.
        (GCOV_COUNTER_AVERAGE, GCOV_COUNTER_IOR): New constants.
        (GCOV_COUNTERS, GCOV_LAST_VALUE_COUNTER): Update.
        * profile.c (instrument_values): Add new counters.
        * cfgexpand.c (expand_gimple_basic_block): Propagate histograms to
        calls.
        * tree-profile.c (tree_average_profiler_fn, tree_ior_profiler_fn): New.
        (tree_init_edge_profiler): Build new profilers.
        (tree_gen_average_profiler, tree_gen_ior_profiler): New.
        (pass_tree_profile): Add dump.
        (tree_profile_hooks): Update.
        * Makefile.in (LIBGCOV): Add new constants.
        * libgcov.c (__gcov_merge_ior, __gcov_average_profiler,
        __gcov_ior_profiler): New.
        * i386.md (movmem/setmem expanders): Add new optional arguments.

2007-01-28  David Edelsohn  <edelsohn@gnu.org>

        * doc/md.texi (Standard Pattern Names): Document blockage pattern.

2007-01-28  Zdenek Dvorak <dvorakz@suse.cz>

        * tree-ssa-loop-unswitch.c: Include tree-inline.h.
        (tree_unswitch_single_loop): Pass eni_size_weights to
        tree_num_loop_insns.
        * tree-ssa-loop-manip.c: Include tree-inline.h.
        (can_unroll_loop_p): Pass eni_size_weights to
        tree_num_loop_insns.
        * tree-ssa-loop-ch.c (should_duplicate_loop_header_p):
        Pass eni_size_weights to estimate_num_insns.
        * tree.h (init_inline_once): Export.
        * toplev.c (backend_init): Call init_inline_once.
        * cgraphunit.c (cgraph_process_new_functions,
        cgraph_analyze_function): Pass eni_inlining_weights to
        estimate_num_insns.
        * ipa-inline.c (compute_inline_parameters): Ditto.
        * tree-ssa-loop-ivcanon.c (tree_num_loop_insns): Pass weights
        to estimate_num_insns.
        (try_unroll_loop_completely): Pass eni_size_weights to
        tree_num_loop_insns.
        * tree-eh.c (decide_copy_try_finally): Pass eni_size_weights
        ot estimate_num_insns.
        * tree-ssa-loop-prefetch.c: Include tree-inline.h.
        (loop_prefetch_arrays): Pass eni_time_weights to tree_num_loop_insns.
        * tree-inline.c (eni_inlining_weights, eni_size_weights,
        eni_time_weights): New variables.
        (init_inline_once): Initialize them.
        (struct eni_data): Mew.
        (estimate_num_insns_1, estimate_num_insns): Use weights.
        * tree-inline.h (struct eni_weights_d): New.
        (eni_inlining_weights, eni_size_weights, eni_time_weights): Declare.
        (estimate_num_insns): Declaration changed.
        * cfgloop.h (tree_num_loop_insns): Declaration changed.
        * Makefile.in (tree-ssa-loop-unswitch.o, tree-ssa-loop-prefetch.o,
        tree-ssa-loop-manip.o): Add TREE_INLINE_H dependency.

2007-01-28  Zdenek Dvorak <dvorakz@suse.cz>

        * tree-data-ref.c (conflict_fn): Assert that the number of affine
        relations in the conflict function is valid.

2007-01-27  Ian Lance Taylor  <iant@google.com>

        * common.opt: Add fstrict-overflow.
        * opts.c (decode_options): Set flag_strict_overflow if -O2.
        * flags.h (TYPE_OVERFLOW_WRAPS): Define.
        (TYPE_OVERFLOW_UNDEFINED): Define.
        (TYPE_OVERFLOW_TRAPS): Define.  This replaces TYPE_TRAP_SIGNED.
        Replace all uses.
        * tree.h (TYPE_TRAP_SIGNED): Don't define.
        * fold-const.c (negate_expr_p): Use TYPE_OVERFLOW_UNDEFINED.
        (fold_negate_expr): Likewise.
        (make_range): Likewise.
        (extract_muldiv_1): Likewise.
        (maybe_canonicalize_comparison): Likewise.
        (fold_comparison): Likewise.
        (fold_binary): Likewise.
        (tree_expr_nonnegative_p): Likewise.
        (tree_expr_nonzero_p): Likewise.
        * tree-vrp.c (compare_values): Likewise.
        (extract_range_from_binary_expr): Likewise.
        (extract_range_from_unary_expr): Likewise.
        * tree-ssa-loop-niter.c (infer_loop_bounds_from_signedness):
        Likewise.
        (nowrap_type_p): Likewise.
        * tree-scalar-evolution.c (simple_iv): Likewise.
        * fold-const.c (negate_expr_p): Use TYPE_OVERFLOW_WRAPS.
        (build_range_check): Likewise.
        (extract_muldiv_1): Likewise.
        (fold_comparison): Likewise.
        * tree-vrp.c (vrp_int_const_binop): Likewise.
        (extract_range_from_unary_expr): Likewise.
        * convert.c (convert_to_integer): Likewise.
        * fold-const.c (fold_negate_expr): Use TYPE_OVERFLOW_TRAPS.
        (fold_comparison): Likewise.
        (fold_binary): Likewise.
        * optabs.c (optab_for_tree_code): Likewise.
        * tree-vectorizer.c (vect_is_simple_reduction): Likewise.
        * simplify-rtx.c (simplify_const_relational_operation): Check
        flag_strict_overflow and flag_trapv.
        (simplify_const_relational_operation): Likewise.
        * doc/invoke.texi (Option Summary): Mention -fstrict-overflow.
        (Optimize Options): Add -fstrict-overflow to -O2 list.  Document
        -fstrict-overflow.

2007-01-27  Roger Sayle  <roger@eyesopen.com>

        * tree.c (tree_fold_gcd): Delete.
        * tree.h (tree_fold_gcd): Remove prototype.
        * tree-data-ref.c (tree_fold_divides_p): Don't use tree_fold_gcd to
        test whether one constant integer is a multiple of another.  Instead
        call int_const_binop with TRUNC_MOD_EXPR and test for a zero result.
        * fold-const.c (multiple_of_p):  We've determined both TOP and
        BOTTOM are integer constants so we can call int_const_binop directly
        instead of the more generic const_binop.

2007-01-27  Roger Sayle  <roger@eyesopen.com>

        * fold-const.c (size_binop): In the fast-paths for X+0, 0+X, X-0 and
        1*X check that the constant hasn't overflowed, to preserve the
        TREE_OVERFLOW bit.
        (round_up): Provide an efficient implementation when rouding-up an
        INTEGER_CST to a power-of-two.

2007-01-28  Ralf Wildenhues  <Ralf.Wildenhues@gmx.de>

        * doc/sourcebuild.texi: Add comma for clarity.
        * doc/extend.texi: Fix some typos.
        * doc/passes.texi: Likewise.
        * doc/cppinternals.texi: Likewise.
        * doc/c-tree.texi: Likewise.
        * doc/tree-ssa.texi: Likewise.
        * doc/install.texi: Likewise.

2007-01-27  Jan Hubicka  <jh@suse.cz>

        * tree-sra.c (sra_walk_function): Don't rely on aliases being build.
        (pass_sra): Do not require alias information.
        * passes.c (init_optimization_passes): Add SRA

2007-01-27  Steven Bosscher  <steven@gcc.gnu.org>

        * tracer.c (rest_of_handle_tracer): We already cleaned
        up the CFG in tracer() so don't do it here again.
        * cfgcleanup.c (rest_of_handle_jump2): Don't repeat
        cleanup_cfg here, either.  And don't call renumber_insns.

        * cfgrtl.c (rtl_verify_flow_info_1): Don't verify that BB_END
        and BB_HEAD are in the insn stream here.  Instead make sure
        that BB_INSN is valid on all insns.  Also, do check here that
        there are no pending branch predictions...
        (rtl_verify_flow_info): ...instead of doing it here.  Checks
        for BB_END and BB_HEAD moved from rtl_verify_flow_info_1 to
        here.

2007-01-26  Roger Sayle  <roger@eyesopen.com>

        * config/i386/i386.c (ix86_swap_binary_operands_p): New helper
        function to simplify/factorize operand order canonicalization.
        (ix86_fixup_binary_operands): Reorganize using the above function.
        (ix86_binary_operator_ok): Likewise.

2007-01-27  Jakub Jelinek  <jakub@redhat.com>

        * genattrtab.c (struct attr_value_list, insn_code_values): Move to
        file scope from optimize_attrs.
        (simplify_test_exp): If insn_code_values is not NULL, use it to speed
        up search.
        (optimize_attrs): Clear insn_code_values after freeing it.

2007-01-26  Zdenek Dvorak <dvorakz@suse.cz>

        * tree-ssa-address.c (create_mem_ref): Remove ", bsi" from
        a parts.base assignment.

2007-01-26  Zdenek Dvorak <dvorakz@suse.cz>

        * tree-data-ref.c (dump_subscript): Use dump_conflict_function.
        (compute_subscript_distance, initialize_data_dependence_relation,
        finalize_ddr_dependent, analyze_ziv_subscript,
        analyze_siv_subscript_cst_affine,
        compute_overlap_steps_for_affine_univar,
        compute_overlap_steps_for_affine_1_2, analyze_subscript_affine_affine,
        analyze_siv_subscript, analyze_miv_subscript,
        analyze_overlapping_iterations, subscript_dependence_tester_1,
        compute_self_dependence, free_dependence_relation):&nbs