* bb-reorder.c (partition_hot_cold_basic_blocks): Make it

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

2006-01-16  Kazu Hirata  <kazu@codesourcery.com>

        * bb-reorder.c (partition_hot_cold_basic_blocks): Make it
        static.
        * basic-block.h: Remove the prototype for
        partition_hot_cold_basic_blocks.

2006-01-16  Rafael Ávila de Espíndola <rafael.espindola@gmail.com>

        * cppspec.c (lang_specific_spec_functions): remove
        * gcc.c (lookup_spec_function): use static_spec_functions directelly
        * gcc.h (lang_specific_spec_functions): remove
        * gccspec.c (lang_specific_spec_functions): remove

2005-01-16  Paolo Bonzini  <bonzini@gnu.org>

        * combine.c (record_value_for_reg): Invalidate registers
        if INSN is null.
        (record_dead_and_set_regs_1): Likewise, by passing them to
        record_value_for_reg.
        (record_dead_and_set_regs): Invalidate stores made by a
        call.  We do not combine across a call, but we still
        relied on equivalences.

2006-01-16  Eric Botcazou  <ebotcazou@adacore.com>

        * tree-vrp.c (extract_range_from_binary_expr): Cope with
        vrp_int_const_binop returning non-constant nodes.

2006-01-16  Paul Brook  <paul@codesourcery.com>

        * config/m68k/m68k.c (output_move_const_into_data_reg):
        Output correct mnemonic for mvz and mvs.

2006-01-16  Gabor Loki <loki@gcc.gnu.org>

        * rtl-factoring.c : Add sequence abstraction algorithm.
        * cfgcleanup.c (outgoing_edges_match): Extra checks.
        (try_crossjump_to_edge): Avoid deleting preserve label when redirecting
        ABNORMAL edges.
        (block_has_preserve_label): New function.
        * common.opt: Register new pass.
        * Makefile.in: Ditto.
        * passes.c: Ditto.
        * timevar.def: Ditto.
        * tree-pass.h: Ditto.
        * emit-rtl.c (make_jump_insn_raw): Remove forward decl.
        * rtl.h (make_jump_insn_raw): Add forward decl.
        * doc/invoke.texi: Add documentation for -frtl-abstract-sequences.

2006-01-16  Eric Botcazou  <ebotcazou@adacore.com>
            Roger Sayle  <roger@eyesopen.com> 

        * fold-const.c (fold_minmax): New static function.
        (fold_binary) <MIN_EXPR>: Call it.
        <MAX_EXPR>: Likewise.
        * stor-layout.c (place_field): Use DECL_SIZE consistently
        in the computation of the new record size.

2006-01-16  Kazu Hirata  <kazu@codesourcery.com>

        * cse.c (cse_condition_code_reg): Make it static.
        * rtl.h: Remove the prototype for cse_condition_code_reg.

        * combine.c (combine_instructions): Make it static.
        * rtl.h: Remove the prototype for combine_instructions.

2006-01-15  John David Anglin  <dave.anglin@nrc-cnrc.gc.ca>

        PR target/25168
        * tree.c (get_file_function_name_long): Concatenate the first global
        object name with a string derived from the input filename of the object
        for type "F".

2006-01-16  Ben Elliston  <bje@au.ibm.com>

        * config/i386/winnt-stubs.c: Update FSF address.
        * config/xtensa/ieee754-df.S: Ditto.
        * config/xtensa/ieee754-sf.S: Ditto.

2006-01-14  Ian Lance Taylor  <ian@airs.com>

        * ifcvt.c (noce_init_if_info): New static function, broken out of
        noce_process_if_block.
        (noce_process_if_block): Call noce_init_if_info.
        (check_cond_move_block): New static function.
        (cond_move_process_if_block): New static function.
        (process_if_block): Call cond_move_process_if_block.

2006-01-15  Kazu Hirata  <kazu@codesourcery.com>

        * cselib.c (hash_table): Rename to cselib_hash_table.
        (cselib_clear_table, discard_useless_values,
        remove_useless_values, cselib_lookup_mem, cselib_lookup,
        cselib_init, cselib_finish): Adjust uses of hash_table.

2006-01-14  Kazu Hirata  <kazu@codesourcery.com>

        PR tree-optimization/25485
        * tree-vrp.c (extract_range_from_binary_expr): Handle cases
        where one of the operands of TRUTH_AND_EXPR and TRUTH_OR_EXPR
        is known to be false and true, respectively.

2006-01-14  Richard Guenther  <rguenther@suse.de>

        PR tree-optimization/22548
        PR tree-optimization/22555
        PR tree-optimization/22501
        * Makefile.in (tree-ssa-structalias.o): Depend on $(PARAMS_H).
        * params.def (salias-max-array-elements): New parameter.
        * params.h (SALIAS_MAX_ARRAY_ELEMENTS): Define.
        * doc/invoke.texi (salias-max-array-elements): Document.
        * tree-flow-inline.h (var_can_have_subvars): We also handle
        arrays now.
        * tree-ssa-alias.c (find_used_portions): Handle ARRAY_REF like
        COMPONENT_REF.
        * tree-ssa-structalias.c (params.h): Include.
        (push_fields_onto_fieldstack): Handle ARRAY_TYPE.
        (find_func_aliases): Handle multiple constraints from ARRAY_REF.
        (get_constraint_for): For ADDR_EXPR operating on something
        containing an ARRAY_REF, add all subvars to the solution.
        (handle_ptr_arith): Handle ARRAY_TYPE like RECORD_TYPE types.
        * tree-ssa-operands.c (parse_ssa_operands): Handle ARRAY_REF
        for creating MUST_DEFs.
        (get_expr_operands): Treat ARRAY_REF like COMPONENT_REF wrt subvars.

2006-01-14  Zdenek Dvorak <dvorakz@suse.cz>

        * tree-ssa-loop-niter.c (number_of_iterations_cond): Split into several
        functions.
        (number_of_iterations_ne, number_of_iterations_lt_to_ne,
        assert_no_overflow_lt, assert_loop_rolls_lt, number_of_iterations_lt,
        number_of_iterations_le): New functions.
        (number_of_iterations_special): Removed.
        (number_of_iterations_exit): Do not use number_of_iterations_special.
        * tree.c (unsigned_type_for): Always return integer type.

2006-01-14  Steven Bosscher  <stevenb.gcc@gmail.com>
        Richard Guenther  <rguenther@suse.de>

        PR rtl-optimization/24257
        * gcse.c (find_moveable_store): Only consider a store movable
        when the SET_SRC of the insn can be assigned to a register.

2006-01-14  Ian Lance Taylor  <ian@airs.com>

        * tree.c (tree_not_class_check_failed): New function.
        * tree.h (NON_TYPE_CHECK): Call tree_not_class_check_failed.
        (tree_not_class_check_failed): Declare.

2006-01-13  Ian Lance Taylor  <ian@airs.com>

        * reload1.c (do_output_reload): Add assertion rejecting a
        CALL_INSN.

2006-01-13  Adam Nemet  <anemet@caviumnetworks.com>

        * combine.c (struct reg_stat): Add new fields truncation_label and
        truncated_to_mode.
        (record_value_for_reg): Reset truncated_to_mode.
        (record_truncated_value): New function.
        (check_promoted_subreg): Call it.  Rename to check_conversions.
        (combine_instructions): Rename check_promoted_subreg to
        check_conversions.
        (reg_truncated_to_mode): New function.
        (make_extraction): Use it.  Check TRULY_NOOP_TRUNCATION.
        (gen_lowpart_or_truncate): New function.
        (force_to_mode): Use it instead of gen_lowpart.

2006-01-13  Diego Novillo  <dnovillo@redhat.com>

        * tree-ssa-alias.c (add_type_alias): Fix typo.  Test whether
        VAR is a tag, not its type tag.

2006-01-13  Alexandre Oliva  <aoliva@redhat.com>

        * config/i386/sse.md (*vec_extractv2di_1_sse2): Reorder
        alternatives to match style of other entries.
        (*vec_extractv2di_1_sse): Likewise.  Fix mode attr.

2006-01-13  Daniel Berlin  <dberlin@dberlin.org>

        PR tree-optimization/25771
        * tree-ssa-pre.c (insert_extra_phis): Don't insert merges of abnormal
        SSA_NAMES.

2006-01-13  Andrew Pinski  <pinskia@physics.uc.edu>

        PR tree-opt/24365
        * tree-inline.c (declare_return_variable): If the return variable
        was marked as a non gimple complex, set the return slot variable
        to be a non gimple comple variable.

2006-01-13  Richard Guenther  <rguenther@suse.de>

        * builtins.c (expand_builtin_sincos): New function.
        (expand_builtin_mathfn_3): Remove dead code, sin and cos
        do not set errno.
        (expand_builtin): Expand sincos using expand_builtin_sincos.

2006-01-12  DJ Delorie  <dj@redhat.com>

        * config/m32c/shift.md: Rewrite: Allow arbitrary operands for
        shift counts, separate SI shifts for m32c vs m16c, pass shift type
        so that constant shifts can be split.
        * config/m32c/m32c.c (m32c_const_ok_for_constraint_p): Add In6.
        (m32c_valid_pointer_mode): Make static.
        (shift_gen_func_for): New.
        (m32c_prepare_shift): Use it.  Split large const shifts into
        multiple shifts.
        * config/m32c/predicates.md (shiftcount_operand): Allow more
        general operands.
        (longshiftcount_operand): New.
        * doc/md.texi (Machine Constraints): Document In6.

2006-01-13  Ben Elliston  <bje@au.ibm.com>

        * doc/tm.texi (Data Output): Add REAL_VALUE_TO_TARGET_DECIMAL32,
        REAL_VALUE_TO_TARGET_DECIMAL64 and REAL_VALUE_TO_TARGET_DECIMAL128
        documentation.

2006-01-12  Daniel Berlin  <dberlin@dberlin.org>

        * tree-ssa-operands.c (add_call_clobber_ops): Use SFT_PARENT_VAR
        to try to avoid clobbering pieces of structures when we know
        something about the whole structure.
        * tree-ssa-alias.c (create_sft): Set SFT_PARENT_VAR

2006-01-13  Ben Elliston  <bje@au.ibm.com>

        * doc/rtl.texi (Insns): Remove statement that libcalls cannot
        return in memory, as this is no limitation is no longer present.

2006-01-12  DJ Delorie  <dj@redhat.com>

        * config/m32c/addsub.md (addhi3): Add two more alternatives, for
        mova with fb, and for fb+0 -> An.

        * config/m32c/mov.md (peephole2): Fix enabling logic.

        * config/m32c/m32c.h (CTOR_LIST_BEGIN, CTOR_LIST_END,
        DTOR_LIST_BEGIN, DTOR_LIST_END, CTORS_SECTION_ASM_OP,
        DTORS_SECTION_ASM_OP, INIT_ARRAY_SECTION_ASM_OP,
        FINI_ARRAY_SECTION_ASM_OP): Define.

        * config/m32c/m32c.c (m32c_legitimize_address): Remove temporary
        variable.
        (m32c_legitimize_reload_address): New logic to reload FB to An.
        (m32c_output_reg_push): Add newline.
        (m32c_output_reg_pop): Likewise.

2006-01-12  Ulrich Weigand  <uweigand@de.ibm.com>

        * struct-equiv.c (find_dying_inputs): Fix off-by-one bug.

2006-01-11  Andrew Pinski  <pinskia@physics.uc.edu>

        * config/i386/darwin.h (SUBTARGET_ENCODE_SECTION_INFO): Define.

2006-01-11  Kazu Hirata  <kazu@codesourcery.com>

        * config/sh/predicates.md (sh_rep_vec): Add parallel to
        match_code.

2006-01-11  Ben Elliston  <bje@au.ibm.com>

        * rtlanal.c (find_reg_note): Assert insn is not null.

2005-01-11  Kenneth Zadeck <zadeck@naturalbridge.com>

        * df-scan.c (df_hard_reg_init): Move declaration of i outside
        ifdef.

2006-01-11  Jeff Law  <law@redhat.com>

        * tree-ssa-threadupdate.c (threaded_edges): New VEC to
        hold edge pairs.
        (mark_threaded_blocks, register_jump_thread): New functions.
        (thread_through_all_blocks): Remove unwanted argument.  No
        longer rely on e->aux to communicate thread target info.
        Call mark_threaded_blocks.  Release the threaded_blocks
        bitmap and threaded_edges vector when complete.
        * tree-ssa-dom.c (struct edge_info): Remove redirection_target field.
        (threaded_blocks): Remove.
        (tree_ssa_dominator_optimize): Remove initialization and
        finalization of threaded_blocks.  Simplify call to
        thread_through_all_blocks.
        (thread_across_edge): Call register_jump_thread rather than
        storing thread information into e->aux.
        (free_all_edge_infos): Simplify now that e->aux is no longer
        used to communicate with thread_through_all_blocks.
        * tree-flow.h (thread_through_all_blocks): Update prototype.
        (register_jump_thread): Prototype.
        
2006-01-11  Kazu Hirata  <kazu@codesourcery.com>

        * df-core.c (df_compact_blocks, df_bb_replace): Use
        SET_BASIC_BLOCK instead of BASIC_BLOCK.

2006-01-11  Richard Guenther  <rguenther@suse.de>

        PR tree-optimization/25734
        * tree-ssa-forwprop.c (forward_propagate_addr_expr_1): Do not
        stop propagation after successful propagation to the LHS.

2006-01-11  Kazu Hirata  <kazu@codesourcery.com>

        * basic-block.h (control_flow_graph): Change the type of
        x_basic_block_info to VEC(basic_block,gc) *.
        (BASIC_BLOCK_FOR_FUNCTION, BASIC_BLOCK): Adjust the uses of
        basic_block_info.
        (SET_BASIC_BLOCK): New.
        * cfg.c (compact_blocks, expunge_block): Use SET_BASIC_BLOCK
        instead of BASIC_BLOCK when assigning to BASIC_BLOCK.
        * cfgbuild.c (find_basic_blocks): Likewise.
        * cfglayout.c (fixup_reorder_chain): Likewise.
        * cfgrtl.c (create_basic_block_structure,
        rtl_create_basic_block): Likewise.
        * ifcvt.c (find_if_case_1): Likewise.
        * tree-cfg.c (init_empty_tree_cfg, build_tree_cfg, create_bb):
        Likewise.

2005-01-11  Kenneth Zadeck <zadeck@naturalbridge.com>

        * Makefile.in: Removed rotted odf.c entry.
        
2006-01-11  Hans-Peter Nilsson  <hp@axis.com>

        PR target/25706
        * config/cris/cris.md ("*extopqihi_side", "*extop<mode>si_side")
        ("*extop<mode>si_swap_side_biap", "*extop<mode>si_swap_side",
        ("*extopqihi", "*extop<mode>si", "*extop<mode>si_swap"): Use %E
        output pattern modifier, not %e.
        * config/cris/cris.c (cris_op_str): Update comment about pattern
        modifier.
        (cris_print_operand) <case 'e'>: Clear cris_output_insn_is_bound
        before falling through into...
        <case 'E'>: Redefined from old 'e' case.

2006-01-11  Jan Hubicka  <jh@suse.cz>

        PR target/25042
        * i386.c (ix86_init_mmx_sse_builtins): Do not delcare float128

2006-01-11  Jan Hubicka  <jh@suse.cz>

        * i386.h (TARGET_DECOMPOSE_LEA): Kill.
        * i386.c (x86_decompose_lea): Kill.
        (ix86_rtx_costs): Kill.

2006-01-11  Jan Hubicka  <jh@suse.cz>

        * cgraph.c (cgraph_insert_node_to_hashtable): New function.
        * cgraph.h (cgraph_node): Add inline_decl.
        (cgraph_insert_node_to_hashtable): Declare.
        (save_inline_function_body): Declare.
        * cgraphunit.c (verify_cgraph_node): Inline edges might point to inline
        clones.
        (cgraph_preserve_function_body_p): Do not presrve when dump is enabled.
        (cgraph_function_versioning): Update call of tree_function_versioning.
        (save_inline_function_body): New function.
        * function.h (struct function): Kill saved_eh, saved_cfg, saved_args,
        saved_static_chain_decl, saved_blocks and saved-unexpanded_var_list.
        * ipa-inline.c (cgraph_mark_inline_edge): Look for inline clones.
        (cgraph_default_inline_p): Likewise.
        (cgraph_decide_inlining_incrementally): Likewise.
        * tree-inline.c (inline_data): Kill saving_p add update_clones_p.
        (copy_bb): Kill saving; do updating of clones.
        (copy_cfg_body): Kill saving.
        (initialize_inlined-parameters): Likewise.
        (expand_call_inline): Likewise.
        (save_body): Kill.
        (tree_function_versioning): New parameter "update_clones".
        (inlining_p): Kill saving.
        * tree-inline.h (tree_function_versioning): Update prototype.
        * tree-optimize.c (tree_rest_of_compilation): Use clonning instead of
        saving.

2006-01-11  Ian Lance Taylor <ian@airs.com>

        * combine.c (struct undo): Remove is_int.  Enumify types of undos.
        Allow undoing set of machine mode.
        (do_SUBST): Use enums instead of is_int.
        (do_SUBST_MODE): New function.
        (SUBST_MODE): New macro.
        (try_combine): Use SUBST_MODE/PUT_MODE instead of generating a new
        reg and trying to replace reg_regno_rtx with a new register.
        (undo_all): Use new enums, handle undoing a PUT_MODE change.
        (simplify_set): Use SUBST_MODE.
        (distribute_notes): Remove code that tried to update reg notes
        for regno_reg_rtx changes.

2006-01-11  Paolo Bonzini  <bonzini@gnu.org>

        PR tree-optimization/23109
        PR tree-optimization/23948
        PR tree-optimization/24123

        * Makefile.in (tree-ssa-math-opts.o): Adjust dependencies.
        * tree-cfg.c (single_noncomplex_succ): New.
        * tree-flow.h (single_noncomplex_succ): Declare it.
        * tree-ssa-math-opts.c (enum place_reciprocal): Remove.
        * tree-ssa-math-opts.c (enum place_reciprocal): Remove.
        (struct occurrence, occ_head, occ_pool, is_divide_by, compute_merit,
        insert_bb, register_division_in, insert_reciprocals,
        replace_reciprocal, free_bb): New.
        (execute_cse_reciprocals_1): Rewritten.
        (execute_cse_reciprocals): Adjust calls to execute_cse_reciprocals_1.
        Do not commit any edge insertion.  Always compute dominators and
        create the allocation pool.
        * target-def.h (TARGET_MIN_DIVISIONS_FOR_RECIP_MUL): New.
        * target.h (struct gcc_target): Add min_divistions_for_recip_mul.
        * targhooks.c (default_min_divistions_for_recip_mul): New.
        * targhooks.h (default_min_divistions_for_recip_mul): New prototype.
        * passes.c (init_optimization_passes): Run recip after tree loop
        optimizations.
        * doc/tm.texi (Misc): Document TARGET_MIN_DIVISIONS_FOR_RECIP_MUL.

2005-01-11  Danny Berlin <dberlin@dberlin.org>
            Kenneth Zadeck <zadeck@naturalbridge.com>

        * df.h (DF_SCAN, DF_RU, DF_RD, DF_LR, DF_UR, DF_UREC, DF_CHAIN,
        DF_RI, DF_LAST_PROBLEM_PLUS1, DF_DU_CHAIN, DF_UD_CHAIN,
        DF_REF_TYPE_NAMES, DF_HARD_REGS, DF_EQUIV_NOTES, DF_SUBREGS,
        DF_SCAN_BB_INFO, DF_RU_BB_INFO, DF_RD_BB_INFO, DF_LR_BB_INFO,
        DF_UR_BB_INFO, DF_UREC_BB_INFO, DF_LIVE_IN, DF_LIVE_OUT,
        DF_RA_LIVE_IN, DF_RA_LIVE_OUT, DF_UPWARD_LIVE_IN,
        DF_UPWARD_LIVE_OUT, DF_REF_REAL_REG, DF_REF_REGNO,
        DF_REF_REAL_LOC, DF_REF_REG, DF_REF_LOC, DF_REF_BB, DF_REF_BBNO,
        DF_REF_INSN, DF_REF_INSN_UID, DF_REF_TYPE, DF_REF_CHAIN,
        DF_REF_ID, DF_REF_FLAGS, DF_REF_NEXT_REG, DF_REF_PREV_REG,
        DF_REF_NEXT_REF, DF_REF_DATA, DF_REF_REG_DEF_P, DF_REF_REG_USE_P,
        DF_REF_REG_MEM_STORE_P, DF_REF_REG_MEM_LOAD_P, DF_REF_REG_MEM_P,
        DF_DEFS_SIZE, DF_DEFS_GET, DF_DEFS_SET, DF_USES_SIZE, DF_USES_GET,
        DF_USES_SET, DF_REG_SIZE, DF_REG_DEF_GET, DF_REG_DEF_SET,
        DF_REG_USE_GET, DF_REG_USE_SET, DF_REGNO_FIRST_DEF,
        DF_REGNO_LAST_USE, DF_INSN_SIZE, DF_INSN_GET, DF_INSN_SET,
        DF_INSN_CONTAINS_ASM, DF_INSN_LUID, DF_INSN_DEFS, DF_INSN_USES,
        DF_INSN_UID_GET, DF_INSN_UID_LUID, DF_INSN_UID_DEFS,
        DF_INSN_UID_USES, DF_SCAN_INITIAL, DF_SCAN_GLOBAL,
        DF_SCAN_POST_ALLOC): New macros.
        (df_flow_dir, df_ref_type, df_ref_flags, df_alloc_function,
        df_free_bb_function, df_local_compute_function, df_init_function,
        df_dataflow_function, df_confluence_function_0,
        df_confluence_function_n, df_transfer_function,
        df_finalizer_function, df_free_function, df_dump_problem_function,
        df_problem, dataflow, df_insn_info, df_reg_info, df_ref, df_link,
        df_ref_info, df, df_map, df_scan_bb_info, df_ru_bb_info,
        df_ru_bb_info, df_rd_bb_info, df_lr_bb_info, df_ur_bb_info,
        df_urec_bb_info, ) New types.
        (df_invalidated_by_call, df_all_hard_regs, df_state) New public
        variables.
        (df_init, df_add_problem, df_set_blocks, df_finish, df_analyze,
        df_analyze_simple_change_some_blocks,
        df_analyze_simple_change_one_block, df_compact_blocks,
        df_bb_replace, df_bb_regno_last_use_find,
        df_bb_regno_first_def_find, df_bb_regno_last_def_find,
        df_insn_regno_def_p, df_find_def, df_find_use,
        df_iterative_dataflow, df_dump, df_chain_dump, df_refs_chain_dump,
        df_regs_chain_dump, df_insn_debug, df_insn_debug_regno,
        df_regno_debug, df_ref_debug, debug_df_insn, debug_df_regno,
        debug_df_reg, debug_df_defno, debug_df_useno, debug_df_ref,
        debug_df_chain, df_get_dependent_problem, df_chain_create,
        df_chain_unlink, df_chain_copy, df_get_live_in, df_get_live_out,
        df_grow_bb_info, df_chain_dump, df_print_bb_index,
        df_ru_add_problem, df_ru_get_bb_info, df_rd_add_problem,
        df_rd_get_bb_info, df_lr_add_problem, df_lr_get_bb_info,
        df_ur_add_problem, df_ur_get_bb_info, df_urec_add_problem,
        df_urec_get_bb_info, df_chain_add_problem, df_ri_add_problem,
        df_reg_lifetime, df_scan_get_bb_info, df_scan_add_problem,
        df_rescan_blocks, df_ref_create, df_get_artificial_defs,
        df_get_artificial_uses, df_reg_chain_create, df_reg_chain_unlink,
        df_ref_remove, df_insn_refs_delete, df_refs_delete,
        df_reorganize_refs, df_set_state, df_hard_reg_init,
        df_read_modify_subreg_p) New public functions.
        * df-core.c: The core dataflow solver and glue routines for rtl
        dataflow.
        (df_init, df_add_problem, df_set_blocks, df_finish,
        df_hybrid_search_forward, df_hybrid_search_backward,
        df_iterative_dataflow, df_prune_to_subcfg, df_analyze_problem,
        df_analyze, df_get_bb_info, df_set_bb_info, df_bb_replace,
        df_bb_regno_last_use_find, df_bb_regno_first_def_find,
        df_bb_regno_last_def_find, df_insn_regno_def_p, df_find_def,
        df_reg_defined, df_find_use, df_reg_used, df_dump,
        df_refs_chain_dump, df_regs_chain_dump, df_insn_debug,
        df_insn_debug_regno, df_regno_debug, df_ref_debug, debug_df_insn,
        debug_df_reg, debug_df_regno, debug_df_ref debug_df_defno,
        debug_df_useno, reset_df_after_reload): New functions.
        * df-scan.c: The scanning fuctions, once in df.c, completely
        rewritten so that they now fully model the functionality of
        register usage at the backend.
        (df_scan_free_internal, df_scan_get_bb_info, df_scan_set_bb_info,
        df_scan_free_bb_info, df_scan_alloc, df_scan_free, df_scan_dump,
        df_scan_add_problem, df_grow_reg_info, df_grow_ref_info,
        df_grow_insn_info, df_rescan_blocks, df_ref_create,
        df_get_artificial_defs, df_get_artificial_uses,
        df_reg_chain_create, df_ref_unlink, df_reg_chain_unlink,
        df_ref_remove, df_insn_create_insn_record, df_insn_refs_delete,
        df_refs_delete, df_reorganize_refs, df_set_state,
        df_ref_create_structure, df_ref_record, df_read_modify_subreg_p,
        df_def_record_1, df_defs_record, df_uses_record,
        df_insn_contains_asm_1, df_insn_contains_asm, df_insn_refs_record,
        df_has_eh_preds, df_bb_refs_record, df_refs_record, df_mark_reg,
        df_record_exit_block_uses, df_hard_reg_init): New functions.

        * df-problems.c: Seven concrete dataflow problems that use the
        scanning in df-scan.c and are solved by the engine in df-core.c.
        (df_get_dependent_problem, df_chain_create, df_chain_unlink,
        df_chain_copy, df_get_live_in, df_get_live_out, df_grow_bb_info,
        df_chain_dump, df_print_bb_index, df_ref_bitmap, df_set_seen,
        df_unset_seen, df_ru_get_bb_info, df_ru_set_bb_info,
        df_ru_free_bb_info, df_ru_alloc,
        df_ru_bb_local_compute_process_def,
        df_ru_bb_local_compute_process_use, df_ru_bb_local_compute,
        df_ru_local_compute, df_ru_init_solution, df_ru_confluence_n,
        df_ru_transfer_function, df_ru_free, df_ru_dump,
        df_ru_add_problem, df_rd_get_bb_info, df_rd_set_bb_info,
        df_rd_free_bb_info, df_rd_alloc,
        df_rd_bb_local_compute_process_def, df_rd_bb_local_compute,
        df_rd_local_compute, df_rd_init_solution, df_rd_confluence_n,
        df_rd_transfer_function, df_rd_free, df_rd_dump,
        df_rd_add_problem, df_lr_get_bb_info, df_lr_set_bb_info,
        df_lr_free_bb_info, df_lr_alloc, df_lr_bb_local_compute,
        df_lr_local_compute, df_lr_init, df_lr_confluence_0,
        df_lr_confluence_n, df_lr_transfer_function, df_lr_free,
        df_lr_dump, df_lr_add_problem, df_ur_get_bb_info,
        df_ur_set_bb_info, df_ur_free_bb_info, df_ur_alloc,
        df_ur_bb_local_compute, df_ur_local_compute, df_ur_init,
        df_ur_local_finalize, df_ur_confluence_n, df_ur_transfer_function,
        df_ur_free, df_ur_dump, df_ur_add_problem, df_urec_get_bb_info,
        df_urec_set_bb_info, df_urec_free_bb_info, df_urec_alloc,
        df_urec_mark_reg_change, df_urec_check_earlyclobber,
        df_urec_mark_reg_use_for_earlyclobber,
        df_urec_mark_reg_use_for_earlyclobber_1, df_urec_bb_local_compute,
        df_urec_local_compute, df_urec_init, df_urec_local_finalize,
        df_urec_confluence_n, df_urec_transfer_function, df_urec_free,
        df_urec_dump, df_urec_add_problem, df_chain_alloc,
        df_chain_create_bb_process_use, df_chain_create_bb,
        df_chain_finalize, df_chain_free, df_chains_dump,
        df_chain_add_problem, df_ri_alloc, df_ri_bb_compute,
        df_ri_compute, df_ri_free, df_ri_dump, df_ri_add_problem,
        df_reg_lifetime): New functions.
        * df.c: Deleted file.
        * ddg.c (create_ddg_dep_no_link, build_inter_loop_deps): Made code
        consistent with new df api.
        * modulo-sched.c (sms_schedule, rest_of_handle_sms,
        rest_of_handle_sms): Ditto.
        * web.c (unionfind_union, union_defs, entry_register, web_main):
        Ditto.
        * loop_invariant.c (invariant_for_use, hash_invariant_expr_1,
        invariant_expr_equal_p, find_defs, check_dependencies,
        find_invariant_insn, find_invariants_to_move, move_invariant_reg,
        free_inv_motion_data, move_loop_invariants): Ditto.
        * Makefile.in (df.c, df-scan.c df-problems.c df-core.c): 
        Update dependencies.
        (odf.c): Added defective entry that was deleted later in day.
        * sched-deps.c (sched_analyze_1): Ditto.

2006-01-11  Zdenek Dvorak <dvorakz@suse.cz>

        * tree-ssa-operands.c (get_expr_operands): Record addressable
        variables directly.  Do not call add_stmt_operands for CONST_DECLs
        and ARRAY_DECLs.
        (get_indirect_ref_operands): Remove handling of *(&a + offset) case.
        (add_stmt_operands): Handle only objects satisfying SSA_VAR_P.

2006-01-11  Ben Elliston  <bje@au.ibm.com>

        * config/i386/i386.c (ix86_return_in_memory): Fix comment: this
        function returns true in the positive case.

2006-01-10  John David Anglin  <dave.anglin@nrc-cnrc.gc.ca>

        PR target/20754
        * config/pa/pa.md: Create separate 32 and 64-bit move patterns
        for SI, DI, SF and DF modes.  Add alternatives to copy between
        general and floating point registers to the 32-bit patterns.
        * config/pa/pa-64.h (SECONDARY_MEMORY_NEEDED_RTX): Delete undefine.
        * config/pa/pa.h (SECONDARY_MEMORY_NEEDED_RTX): Delete define.
        (SECONDARY_MEMORY_NEEDED): Secondary memory is only needed when
        generating 64-bit code.
        * config/pa/pa.c (output_move_double): Handle copies between general
        and floating registers.

2006-01-10  Stuart Hastings  <stuart@apple.com>

        * config/i386/i386.md (set_got): Update.
        (set_got_labelled): New.  (UNSPEC_LD_MPIC): New.
        (builtin_setjmp_receiver): Mach-O support.
        * config/i386/darwin.h (TARGET_ASM_FILE_END) Define.
        (GOT_SYMBOL_NAME): Define.
        (FORCE_PREFERRED_STACK_BOUNDARY_IN_MAIN): New.
        (TARGET_DEEP_BRANCH_PREDICTION): Remove.
        * config/i386/i386.c (override_options): Revise for Darwin.
        (USE_HIDDEN_LINKONCE): Enable for Mach-O.  (ix86_file_end): Mach-O
        support.  (darwin_x86_file_end): New.  (output_set_got): Add label
        parameter, revise for Mach-O.  (x86_output_mi_thunk): Likewise.
        * config/i386/i386-protos.h (output_set_got): Likewise.
        * config/darwin.c (machopic_legitimize_pic_address): Update
        regs_ever_live[].

2006-01-10  Kaz Kojima  <kkojima@gcc.gnu.org>

        * config/sh/sh.h (SH5_WOULD_BE_PARTIAL_NREGS): Use GET_MODE_SIZE
        when MODE isn't BLKmode.

2006-01-10  Eric Botcazou  <ebotcazou@libertysurf.fr>

        PR rtl-optimization/25367
        * config/sparc/sparc.h (HARD_REGNO_RENAME_OK): New macro.

2006-01-10  Hans-Peter Nilsson  <hp@axis.com>

        PR target/25718
        * config/cris/cris.md ("uminsi3"): Don't use 8- or 16-bit sizes
        for a negative bound.

2006-01-10  Richard Guenther  <rguenther@suse.de>

        * tree-ssa-structalias.c (get_constraint_for_component_ref):
        Never override with anything constraint.

2006-01-10  Jan Beulich  <jbeulich@novell.com>

        * config/i386/i386.c (ix86_data_alignment): Don't force alignment to
        256 bits when optimize_size.

2006-01-10  Jan Beulich  <jbeulich@novell.com>

        * config/i386/netware.h (TARGET_SUBTARGET_DEFAULT): Include
        MASK_ALIGN_DOUBLE.
        * config/i386/nwld.h (LINK_SPEC): Add --extensions:GNU option.
        * config/i386/t-nwld (SHLIB_LINK): Insert spaces between expr
        arguments.

2006-01-10  Ben Elliston  <bje@au.ibm.com>

        * config/rs6000/predicates.md (easy_fp_constant): Discount decimal
        float modes.
        * config/rs6000/rs6000.c (rs6000_scalar_mode_supported_p): New.
        (TARGET_SCALAR_MODE_SUPPORTED_P): Define.
        (USE_FP_FOR_ARG): Reject decimal float modes.
        (function_arg_advance): Likewise.
        (output_toc): Handle emitting TDmode, DDmode and SDmode constants.
        (rs6000_handle_altivec_attribute): Do not permit decimal floating
        point types in AltiVec vectors.
        (rs6000_function_value): Use GP_ARG_RETURN for decimal floats.
        (rs6000_libcall_value): Likewise.

2006-01-09  Bob Wilson  <bob.wilson@acm.org>

        * config/xtensa/ieee754-df.S: New file.
        * config/xtensa/ieee754-sf.S: New file.
        * config/xtensa/t-xtensa (LIB2FUNCS_EXTRA): Remove fp-bit.c & dp-bit.c.
        (LIB1ASMFUNCS): Add SFmode and DFmode floating-point functions.
        * config/xtensa/lib1funcs.asm: Include ieee754-df.S and ieee754-sf.S.

2006-01-09  Kazu Hirata  <kazu@codesourcery.com>

        * config/sh/predicates.md (binary_float_operator,
        binary_logical_operator, commutative_float_operator,
        equality_comparison_operator, greater_comparison_operator,
        less_comparison_operator, logical_operator,
        noncommutative_float_operator, shift_operator,
        symbol_ref_operand, unary_float_operator): Remove redundant
        conditionals.

2006-01-09  Jeff Law  <law@redhat.com>

        * tree-ssa-dom.c (simplify_cond_and_lookup_avail_expr): Remove
        code to propagate the RHS of a cast into COND_EXPR_COND.  Remove
        now unused arguments.  Callers updated.
        (eliminate_redundant_computations): Remove now unused arguments,
        callers updated.
        (local_fold): Remove, no longer used.
        (find_equivalent_equality_comparison): Removed from tree-ssa-dom.c
        and moved to...
        * tree-ssa-forwprop.c (find_equivalent_equality_comparison): Here.
        (simplify_cond): New function.
        (forward_propagate_into_cond): Call simplify_cond.

2006-01-09  Alexandre Oliva  <aoliva@redhat.com>

        * config/i386/sse.md (*vec_extractv2di_1_sse2): New.
        (*vec_extractv2di_1_sse): New.

2006-01-09  Ben Elliston  <bje@au.ibm.com>

        * config/rs6000/rs6000.h (GO_IF_LEGITIMATE_ADDRESS): Typo fix.

2006-01-08  Richard Guenther  <rguenther@suse.de>

        * tree-ssa-structalias.c (get_constraint_for): Remove
        anyoffset argument.
        (get_constraint_for_component_ref): Likewise.
        (do_deref): Likewise.
        (get_constraint_for): Likewise.
        (do_structure_copy): Likewise.
        (handle_ptr_arith): Likewise.
        (find_func_aliases): Likewise.  Remove unused need_anyoffset
        variable.

2006-01-08  J"orn Rennecke  <joern.rennecke@st.com>
            Kaz Kojima  <kkojima@gcc.gnu.org>

        * config/sh/sh.h (CONST_OK_FOR_K16): Define.
        (CONST_OK_FOR_K): Add CONST_OK_FOR_K16 case.
        (EXTRA_CONSTRAINT_C16): Remove.
        (EXTRA_CONSTRAINT_Css, EXTRA_CONSTRAINT_Csu): Define.
        (EXTRA_CONSTRAINT_C): Remove EXTRA_CONSTRAINT_C16 case and add
        EXTRA_CONSTRAINT_Css and EXTRA_CONSTRAINT_Csu cases.
        * config/sh/sh.c (print_operand): Handle unsigned 16-bit symbolic
        constants of SHmedia.  Handle nested constant expressions of
        SHmedia correctly.
        (andcosts): Fix the costs for SHmedia constants.
        (sh_rtx_costs): Take account of outer_code for SHmedia constants.
        * config/sh/sh.md (*movsi_media): Use Css constraint instead of C16.
        (*movsi_media_nofpu, *movqi_media, *movhi_media): Likewise.
        (*movdi_media, *movdi_media_nofpu, movv8qi_i, movv2hi_i): Likewise.
        (movv4hi_i, movv2si_i): Likewise.
        (movsi_const): Adjust the second operand of ior so to match with
        the Csu constraint.
        (movdi_const, movdi_const_32bit): Likewise.
        (movdi_const_16bit+1): Don't sign-extend LOW.
        (movdi_const_16bit+2): Likewise.  Remove the zero_extend and truncate
        step.
        (*double_shori): Fix the split condition.  Use GEN_INT instead
        of get_int_mode calls.  Mask lower 16-bit of the argument of
        the last GEN_INT.
        (sym2GOTPLT): Remove.
        (symGOTPLT2reg): Replace gen_sym2GOTPLT with gen_rtx_CONST and
        gen_rtx_UNSPEC.
        * config/sh/predicates.md (arith_operand): Use EXTRA_CONSTRAINT_Css
        instead of EXTRA_CONSTRAINT_C16.

2006-01-07  Ian Lance Taylor  <ian@airs.com>
            David Edelsohn  <edelsohn@gnu.org>

        PR rtl-optimization/25662
        * optabs.c (simplify_expand_binop): Use simplify_binary_operation
        for constant operands instead of simplify_gen_binary.
        * simplify-rtx.c (simplify_gen_binary): Swap commutative operands
        after trying simplify_binary_operation

2006-01-06  Daniel Berlin  <dberlin@dberlin.org>

        * tree.c (iterative_hash_expr): Hash decls based on UID.

2006-01-06  Eric Christopher  <echristo@apple.com>

        * doc/tm.texi (TARGET_ASM_EMIT_EXCEPT_TABLE_LABEL): Document.
        (TARGET_UNWIND_EMIT): Fix spelling.
        * target.h (gcc_target): Add except_table_label.
        * except.c (output_function_exception_table): Use.
        * varasm.c (default_emit_except_table_label): New.
        * target-def.h (TARGET_ASM_EMIT_EXCEPT_TABLE_LABEL): New default
        define.
        (asm_out): Add here.
        * output.h (default_emit_except_table_label): Prototype.
        * config/darwin-protos.h (darwin_emit_except_table_label): Ditto.
        * config/darwin.c (darwin_emit_except_table_label): Define.
        * config/darwin.h (TARGET_ASM_EMIT_EXCEPT_TABLE): Ditto.

2006-01-06  Zdenek Dvorak <dvorakz@suse.cz>

        PR tree-optimization/18527
        * tree-ssa-loop-niter.c (number_of_iterations_cond,
        number_of_iterations_special, number_of_iterations_exit):
        Move base and step of an iv to a single structure.  Add
        no_overflow flag, and use it in # of iterations analysis.
        * tree-scalar-evolution.c (analyze_scalar_evolution_in_loop): Add
        folded_casts argument.
        (simple_iv): Pass base and step in a structure.  Set no_overflow
        flag.
        (scev_const_prop): Add argument to analyze_scalar_evolution_in_loop.
        Evaluate expensiveness of computing # of iterations instead of
        the final expression.
        * tree-scalar-evolution.h (affine_iv): New structure.
        (simple_iv): Declaration changed.
        * tree-chrec.c (chrec_apply): Handle chrecs containing symbols.
        * tree-ssa-loop-ivopts.c (determine_biv_step, find_givs_in_stmt_scev,
        find_givs_in_stmt): Changed due to simple_iv change.

2006-01-06  Jeff Law  <law@redhat.com>

        PR ada/24994
        * tree-cfg.c (bsi_replace): Rename final argument from
        PRESERVE_EH_INFO to UPDATE_EH_INFO.  Fix typo in last
        change (stmt -> orig_stmt).
        * tree-eh.c (verify_eh_throw_stmt_node): New function.
        (bsi_remove): Add new argument.  Remove EH information
        if requested.
        (verify_eh_throw_table_statements): New function.
        (bsi_remove): Add new argument REMOVE_EH_INFO.  All callers
        updated.
        * tree-optimize.c (execute_free_cfg_annotations): Verify
        the EH throw statement table after removing annotations.
        * except.h (verify_eh_throw_table_statements): Prototype.
        * tree-flow.h (bsi_remove): Update prototype.
        * tree-vrp.c (remove_range_assertions): Add new argument to
        bsi_remove call.
        * tree-ssa-loop-im.c (move_computations_stmt): Likewise.
        * tree-complex.c (expand_complex_div_wide): Likewise.
        * tree-ssa-threadupdate.c (remove_ctrl_stmt_and_useless_edges): Likewise
        * tree-tailcall.c (eliminate_tailcall): Likewise.
        * tree-ssa-dse.c (dse_optimize_stmt): Likewise.
        * tree-ssa-loop-ivopts.c (remove_statement): Likewise.
        * tree-nrv.c (tree_nrv): Likewise.
        * tree-vectorizer.c (slpeel_make_loop_iterate_ntimes): Likewise.
        * tree-if-conv.c (tree_if_convert_cond_expr): Likewise.
        (combine_blocks): Likewise.
        * tree-ssa-phiopt.c (replace_phi_edge_with_variable): Likewise.
        * tree-cfgcleanup.c (cleanup_ctrl_expr_graph): Likewise.
        (cleanup_control_flow): Likewise.
        (remove_forwarder_block): Likewise.
        * tree-ssa-pre.c (remove_dead_inserted_code): Likewise.
        * tree-sra.c (sra_replace): Likewise.
        * tree-ssa-forwprop.c (forward_propagate_into_cond): Likewise.
        (forward_propagate_single_use_vars): Likewise.
        * tree-ssa-dce.c (remove_dead_stmt): Likewise.
        * tree-inline.c (expand_call_inline): Likewise.
        * tree-vect-transform.c (vect_transform_loop): Likewise.
        * tree-outof-ssa.c (rewrite_trees): Likewise.
        * tree-cfg.c (make_goto_expr_edges): Likewise.
        (cleanup_dead_labels): Likewise.
        (tree_merge_blocks, remove_bb, disband_implicit_edges): Likewise.
        (bsi_move_before, bsi_move_after): Likewise.
        (bsi_move_to_bb_end, try_redirect_by_replacing_jump): Likewise
        (tree_redirect_edge_and_branch, tree_split_block): Likewise.

2006-01-06  Andrew Pinski  <pinskia@physics.uc.edu>

        PR tree-opt/25528
        * tree-ssa-alias.c (find_used_portions): Handle REALPART_EXPR
        and IMAGPART_EXPR.
        * tree-flow-inline.h (var_can_have_subvars): Handle complex types
        on non gimple variables.  Also add checks at the top for decls and
        mtags.
        * tree-ssa-structalias.c (push_fields_onto_fieldstack): Handle
        complex types.
        * tree-ssa-operands.c (parse_ssa_operands): Handle REALPART_EXPR
        and IMAGPART_EXPR for creating MUST_DEFs.
        (get_expr_operands): Handle SSA_NAME, STRUCT_FIELD_TAG, TYPE_MEMORY_TAG,
        and NAME_MEMORY_TAG separately from the DECLs.

2006-01-06  Richard Guenther  <rguenther@suse.de>

        * tree-dfa.c (mark_new_vars_to_rename): Create stmt
        annotation, if necessary.
        * tree-ssa-pre.c (create_expression_by_pieces): Remove
        redundant calls to update_stmt.
        * tree-ssa-forwprop.c (tidy_after_forward_propagate_addr):
        Likewise.

2006-01-05  Richard Henderson  <rth@redhat.com>

        * c-parser.c (c_parser_objc_methodprotolist): Handle CPP_PRAGMA.

2006-01-05  Carlos O'Donell  <carlos@codesourcery.com>

        * c-typeck.c: Update copyright date.

2006-01-05  Carlos O'Donell  <carlos@codesourcery.com>

        * c-typeck.c (build_c_cast): Always warn when casting
        from a pointer to an integer of different size, even if
        the node was constant.

2006-01-05  Richard Guenther  <rguenther@suse.de>

        PR tree-optimization/22555
        * tree-ssa-alias.c (create_overlap_variables_for): Do not give up,
        if one structure field is an array.
        * tree-ssa-operands.c (get_expr_operands): Continue scanning
        operands even if we found a subvar, but ignore VOPs in this
        case.
        * tree-ssa-loop-ivopts.c (rewrite_use): Mark new vars in stmt
        for renaming.
        * tree-ssa-loop.c (pass_iv_optimize): Schedule TODO_update_ssa.

2006-01-05  Richard Earnshaw  <rearnsha@arm.com>

        PR middle-end/24998
        * arm/t-netbsd (LIB2FUNCS_EXTRA): Define.

2006-01-05  Richard Guenther  <rguenther@suse.de>
            Diego Novillo  <dnovillo@redhat.com>

        * tree-pass.h (TODO_remove_unused_locals): Define.
        * gimple-low.c (expand_var_p, remove_useless_vars,
        pass_remove_useless_vars): Remove.  Update all users.
        * tree-ssa-live.c (mark_all_vars_used_1): Handle SSA names.
        (remove_unused_locals): New function.
        * tree-flow.h (remove_unused_locals): Declare.
        * passes.c (execute_todo): Call remove_unused_locals if
        TODO_remove_unused_locals is set.
        * tree-into-ssa.c (pass_build_ssa): Add TODO_remove_unused_locals.
        * tree-ssa-dce.c (pass_dce): Likewise.
        * tree-outof-ssa.c (pass_del_ssa): Likewise.

2006-01-05  Richard Guenther  <rguenther@suse.de>

        * tree-flow.h (struct fieldoff): Decompose field to
        type, size and decl.
        * tree-ssa-alias.c (create_sft): Take type as parameter.
        (create_overlap_variables_for): Store type, size and decl
        in the fieldoff structure.
        * tree-ssa-structalias.c (fieldoff_compare): Adjust users
        of struct fieldoff.
        (push_fields_onto_fieldstack): Likewise.
        (create_variable_info_for): Likewise.  Use offset for the
        SFT name if the decl is not available.

2006-01-04  Paul Brook  <paul@codesourcery.com>

        * config/m68k/m68k.c (m68k_output_mi_thunk): Use jmp, not jsr.

2006-01-04  Daniel Berlin  <dberlin@dberlin.org>

        * lambda-code.c (can_put_in_inner_loop): Relax
        restrictions.
        (can_put_after_inner_loop): New function.
        (can_convert_to_perfect_nest): Use can_put_after_inner_loop as well.
        (perfect_nestify): Change to make copies and modify uses.

2006-01-04  Richard Henderson  <rth@redhat.com>

        Merge from gomp branch:
        * c-lex.c (c_lex_with_flags) <CPP_PRAGMA>: Smuggle pragma id
        via integer constant.
        (pragma_lex): Remove.
        * c-pch.c (c_common_pch_pragma): Accept the name as an argument,
        rather than parsing it.
        * c-pragma.c (handle_pragma_weak, handle_pragma_redefine_extname,
        handle_pragma_extern_prefix): Add %< %> quotes.
        (registered_pragmas): New.
        (c_register_pragma_1): New.
        (c_register_pragma): Use it.
        (c_register_pragma_with_expansion): Likewise.
        (c_invoke_pragma_handler): New.
        (init_pragma): Use cpp_register_deferred_pragma directly for
        pch_preprocess.
        * c-pragma.h (enum pragma_kind): New.
        (pragma_handler): New.
        (c_invoke_pragma_handler): Declare.
        * c-common.c (c_parse_error): Pretty print CPP_PRAGMA and
        CPP_PRAGMA_EOL.
        * c-common.h (c_common_pch_pragma): Update decl.
        * Makefile.in (c-parser.o): Update dependencies.
        (GTFILES): Add c-pragma.h.
        * c-parser.c (struct c_token): Add pragma_kind.
        (struct c_parser): Add in_pragma.
        (c_lex_one_token): Always initialize keyword and pragma_kind.
        Extract data for CPP_PRAGMA.
        (c_parser_peek_2nd_token): Deny CPP_PRAGMA_EOL.
        (c_parser_consume_token): Don't allow CPP_PRAGMA unless errors.
        Don't allow CPP_PRAGMA_EOL if in_pragma.
        (c_parser_consume_pragma): New.
        (c_parser_skip_until_found): Stop on CPP_PRAGMA_EOL.
        (c_parser_skip_to_end_of_parameter): Likewise.
        (c_parser_skip_to_end_of_block_or_statement): Likewise.
        (c_parser_skip_to_pragma_eol): New.
        (c_parser_external_declaration): Handle CPP_PRAGMA.
        (c_parser_compound_statement_nostart): Likewise.
        (c_parser_statement_after_labels): Likewise.
        (c_parser_pragma): New.
        (pragma_lex): Likewise.
        (c_parser_pragma_pch_preprocess): New.
        (c_parser_new): Merge into ...
        (c_parse_file): ... here.  Call c_parser_pragma_pch_preprocess.

2006-01-04  Jeff Law  <law@redhat.com>

        PR ada/24994
        * tree-cfg.c (bsi_replace): Remove the original statement
        from the EH throw statement table.

2006-01-04  Jakub Jelinek  <jakub@redhat.com>

        * config/i386/pmm_malloc.h (posix_memalign): If __cplusplus,
        make the prototype extern "C" and add throw ().

        PR target/25554
        * config/i386/i386.md (testqi_ext_3): Ensure len is positive
        and pos non-negative and pos + len <= 32.
        (testqi_ext_3_rex64): Ensure len is positive and pos non-negative,
        drop pos + len < HOST_BITS_PER_WIDE_INT test.
        (testqi_ext_3* splitter): Handle pos + len == HOST_BITS_PER_WIDE_INT.

        PR c/25559
        * c-common.c (handle_vector_size_attribute): Reject zero vector size
        as well as sizes not multiple of component size.

        PR debug/25562
        * function.c (instantiate_expr): New function.
        (instantiate_decls_1, instantiate_decls): If DECL_HAS_VALUE_EXPR_P,
        walk its DECL_VALUE_EXPR with instantiate_expr.

        * dwarf2out.c (loc_descriptor_from_tree_1): Don't add
        DW_OP_deref{,_size} if address isn't going to be added.

2006-01-04  Ben Elliston  <bje@au.ibm.com>

        * config/fp-bit.h: Use top-of-file comment from libgcc2.c.
        * config/fp-bit.c: Likewise.

2006-01-03  Daniel Berlin  <dberlin@dberlin.org>

        * dominance.c: Add comment about why we use DFS numbering
        of dominance tree.

2006-01-03  Jakub Jelinek  <jakub@redhat.com>
            Richard Henderson  <rth@redhat.com>

        Merge from gomp-branch:
        * varasm.c (assemble_variable): Handle thread-local COMMON data.
        * defaults.h (ASM_OUTPUT_TLS_COMMON): Define.

2006-01-03  Paolo Bonzini  <bonzini@gnu.org>

        PR rtl-optimization/25578
        * combine.c (combine_simplify_rtx, force_to_mode): Don't
        pass a parameter to simplify_shift_const if changing ASHIFTRT
        to LSHIFTRT.

2006-01-03  Adrian Straetling  <straetling@de.ibm.com>

        * builtins.c (get_builtin_sync_mem): New function.
        (expand_builtin_sync_operation, expand_builtin_compare_and_swap,
        expand_builtin_lock_test_and_set, expand_builtin_lock_release):
        Call get_builtin_sync_mem to generate mem rtx.

2006-01-03  Richard Guenther  <rguenther@suse.de>

        PR c/25183
        * stmt.c (add_case_node): Make sure to clear overflow flags
        from ranges.

2006-01-03  Jakub Jelinek  <jakub@redhat.com>

        Merge from gomp-branch.
        * config/sparc/sync.md: New file.
        * config/sparc/sparc.md (UNSPECV_MEMBAR, UNSPECV_CAS, UNSPECV_SWAP,
        UNSPECV_LDSTUB): New constants.
        * config/sparc/sparc.c (sparc_expand_compare_and_swap_12): New function.
        * config/sparc/predicates.md (memory_reg_operand): New predicate.
        * config/sparc/sparc-protos.h (sparc_expand_compare_and_swap_12): New
        prototype.

2006-01-03  Roger Sayle  <roger@eyesopen.com>

        * combine.c (reg_subword_p): New predicate to test whether the
        destination of a set refers to a subword/piece of a register.
        (try_combine): Generalize the code to merge the setting of a
        pseudo to a constant followed by a set of a subword of that
        register to a constant.

2006-01-03  Kazu Hirata  <kazu@codesourcery.com>

        * basic-block.h (control_flow_graph): Change the type of
        x_label_to_block_map to VEC(basic_block,gc) *.
        * tree-cfg.c (init_empty_tree_cfg, label_to_block_fn,
        set_bb_for_stmt): Adjust the uses of x_label_to_block_map.

        * tree-ssa-propagate.c (cfg_blocks): Change the type to
        VEC(basic_block,heap) *.
        (cfg_blocks_add, cfg_blocks_get, ssa_prop_init,
        ssa_prop_fini): Adjust the uses of cfg_blocks.

2006-01-03  Steven Bosscher  <stevenb.gcc@gmail.com>

        * fold-const.c (operand_equal_p): Accept a NULL operand 0 for
        COMPONENT_REFs.
        * emit-rtl.c (mem_attrs_htab_eq): Use iterative_hash_expr for
        hashing trees instead of a pointer hash.
        (mem_attrs_htab_eq): Do a deep compare instead of a pointer
        compare for MEM_EXPR.

        PR rtl-optimization/25130
        * cse.c (exp_equiv_p): Compare MEM_ATTRS instead of MEM_ALIAS_SET
        when comparing MEMs for GCSE

2006-01-03  Ben Elliston  <bje@au.ibm.com>

        * targhooks.h (default_decimal_float_supported_p): Declare.
        * targhooks.c (default_decimal_float_supported_p): Define.
        * target-def.h (TARGET_DECIMAL_FLOAT_SUPPORTED_P): Redefine to
        `default_decimal_float_supported_p'.
        * doc/tm.texi (TARGET_DECIMAL_FLOAT_SUPPORTED_P): Update.

2006-01-02  Adam Nemet  <anemet@caviumnetworks.com>

        * combine.c (apply_distributive_law <SUBREG>): Check
        TRULY_NOOP_TRUNCATION.

2006-01-02  Geoffrey Keating  <geoffk@apple.com>

        * dwarf2out.c (have_switched_text_section): Delete.
        (have_multiple_function_sections): New.
        (have_location_lists): Make 'bool'.
        (add_AT_loc_list): Use 'true' not '1'.
        (dwarf2out_switch_text_section): Set have_multiple_function_sections.
        (output_loc_list): Use have_multiple_function_sections.
        (output_ranges): Likewise.
        (dwarf2out_begin_function): Set have_multiple_function_sections if
        necessary.
        (dwarf2out_source_line): Don't fake separate_line_info_table_in_use.
        Check function_section rather than DECL_SECTION_NAME.
        (dwarf2out_finish): Use have_multiple_function_sections.
        Don't clear have_location_lists.

2006-01-02  Eric Botcazou  <ebotcazou@adacore.com>
            Jan Hubicka  <jh@suse.cz>

        * cfglayout.c (fixup_reorder_chain): Remove kludge for the
        case of conditional jump jumping to the next instruction.
        * cfgrtl.c (force_nonfallthru_and_redirect): Accept all
        cases of conditional jump jumping to the next instruction.

2006-01-02  Jan Hubicka  <jh@suse.cz>

        * i386.c (*_cost): Add COSTS_N_INSNS.
        (ix86_rtx_costs): Do not use COSTS_N_INSNS.

2006-01-02  Paolo Bonzini  <bonzini@gnu.org>

        PR target/25259
        * Makefile.in (DECNUMINC): Include libdecnumber's build directory.

2006-01-02  Volker Reichelt  <reichelt@igpm.rwth-aachen.de>

        * config/arm/arm.c (all_fpus): Fix comment typo.
        * config/darwin.c: Likewise.
        * config/frv/frv.h (FRV_STRUCT_VALUE_REGNUM): Likewise.
        * config/h8300/h8300.md (extendqisi2_h8300hs): Likewise.
        * config/m68hc11/m68hc11.c (m68hc11_reload_operands): Likewise.

2006-01-01  David Edelsohn  <edelsohn@gnu.org>

        * config/rs6000/rs6000.c (rs6000_expand_compare_and_swapqhi): New.
        (rs6000_split_compare_and_swapqhi): New.
        * config/rs6000/sync.md (sync_compare_and_swap{hi,qi}): New.
        (sync_compare_and_swapqhi_internal): New.
        * config/rs6000/rs6000-protos.h: Declare.