* config/i386/i386.md (*call_value_1_rex64_ms_sysv): Use register

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

2009-11-03  Uros Bizjak  <ubizjak@gmail.com>

        * config/i386/i386.md (*call_value_1_rex64_ms_sysv): Use register
        names instead of numerical constants.
        (sse_prologue_save): Ditto.
        (*sse_prologue_save_insn): Ditto.

2009-11-03  Uros Bizjak  <ubizjak@gmail.com>

        PR target/41900
        * config/i386/i386.h (ix86_arch_indices) <X86_ARCH_CALL_ESP>: New.
        (TARGET_CALL_ESP): New define.
        * config/i386/i386.c (initial_ix86_tune_features): Initialize
        X86_ARCH_CALL_ESP.
        * config/i386/i386.md (*call_pop_1_esp, *call_1_esp,
        *call_value_pop_1_esp, *call_value_1_esp): Rename from *call_pop_1,
        *call_1, *call_value_pop_1 and *call_value_1.  Depend on
        TARGET_CALL_ESP.
        (*call_pop_1, *call_1, *call_value_pop_1, *call_value_1):
        New patterns, use "lsm" as operand 1 constraint.
        * config/i386/predicates.md (call_insn_operand): Depend on 
        index_register_operand for !TARGET_CALL_ESP to avoid %esp register.

2009-11-02  Ulrich Weigand  <Ulrich.Weigand@de.ibm.com>

        PR tree-optimization/41857
        * tree-flow.h (rewrite_use_address): Add BASE_HINT argument.
        * tree-ssa-loop-ivopts.c (rewrite_use_address): Pass base hint
        to create_mem_ref.
        * tree-ssa-address.c (move_hint_to_base): New function.
        (most_expensive_mult_to_index): Add TYPE argument.  Use mode and
        address space associated with TYPE.
        (addr_to_parts): Add TYPE and BASE_HINT arguments.  Pass TYPE to
        most_expensive_mult_to_index.  Call move_hint_to_base.
        (create_mem_ref): Add BASE_HINT argument.  Pass BASE_HINT and
        TYPE to addr_to_parts.

2009-11-02  Martin Jambor  <mjambor@suse.cz>

        PR tree-optimization/41750
        * tree-sra.c (analyze_modified_params): Loop over all
        representatives of components of a parameter.

2009-11-02  Jakub Jelinek  <jakub@redhat.com>

        PR tree-optimization/41841
        * ipa-struct-reorg.c (build_data_structure): Don't attempt to look at
        local variables of not yet materialized clones.

        PR debug/41893
        * cfgexpand.c (expand_debug_expr): Don't attempt to create DECL_RTL
        for a VOIDmode variable.

        PR c++/41774
        * c-pragma.c (visstack): Change into vector of ints rather than
        enum symbol_visibility.
        (push_visibility): Add kind argument, push default_visibility together
        with kind.
        (pop_visibility): Add kind argument, return true if successful, fail
        if visibility stack is empty or if stack top is of different kind.
        (handle_pragma_visibility): Don't check length of visstack, instead
        call pop_visibility and issue diagnostics if it failed.  Pass 0
        as last argument to push_visibility and pop_visibility.
        * c-pragma.h (push_visibility): Add kind argument.
        (pop_visibility): Likewise.  Return bool instead of void.

2009-11-01  Eric Botcazou  <ebotcazou@adacore.com>

        * tree.def (TARGET_MEM_REF): Update comment.
        * alias.c (get_alias_set): Retrieve the original memory reference for
        a TARGET_MEM_REF before proceeding.

2009-10-31  Anatoly Sokolov  <aesok@post.ru>

        * config/frv/frv.c (frv_function_value, frv_libcall_value,
        frv_function_value_regno_p): New functions.
        (TARGET_FUNCTION_VALUE, TARGET_LIBCALL_VALUE): Declare.
        * config/frv/frv.h: (FUNCTION_VALUE, LIBCALL_VALUE): Remove.
        (FUNCTION_VALUE_REGNO_P): Redefine, use frv_function_value_regno_p.
        * config/frv/frv-protos.h (frv_function_value_regno_p): Declare.

2009-10-31  Anatoly Sokolov  <aesok@post.ru>

        * config/mn10300/mn10300.c (mn10300_function_value): Make static, add
        new 'outgoing' argument.
        (mn10300_libcall_value, mn10300_function_value_regno_p): New
        functions.
        (TARGET_FUNCTION_VALUE, TARGET_LIBCALL_VALUE): Declare.
        * config/mn10300/mn10300.h: (FUNCTION_VALUE, FUNCTION_OUTGOING_VALUE,
        LIBCALL_VALUE): Remove.
        (FUNCTION_VALUE_REGNO_P): Redefine, use mn10300_function_value_regno_p.
        * config/mn10300/mn10300-protos.h (mn10300_function_value): Remove.
        (mh10300_function_value_regno_p): Declare.

2009-10-31  Ramana Radhakrishnan  <ramana.radhakrishnan@arm.com>

        * config/arm/cortex-a9.md: New - integer pipeline description.

2009-10-31  Eric Botcazou  <ebotcazou@adacore.com>

        * tree-ssa-sccvn.c (vn_reference_lookup_3): Bail out instead of
        aborting if the sizes of the two references don't match.

2009-10-31  Toon Moene  <toon@moene.org>

        * ipa-inline.c (cgraph_decide_inlining):
        Include reason for not inlining called-once functions in dump file.

2009-10-30  Daniel Gutson  <dgutson@codesourcery.com>

        * config/arm/linux-eabi.h (LINK_SPEC): BE8_LINK_SPEC added.
        * config/arm/bpapi.h (BE8_LINK_SPEC): New define.
        (LINK_SPEC): BE_LINK_SPEC added.

2009-10-30  Richard Guenther  <rguenther@suse.de>

        PR lto/41858
        * lto-streamer.h (struct lto_file_decl_data): Remove fd member.

2009-10-30  Nathan Sidwell  <nathan@codesourcery.com>

        * target-def.h (TARGET_ASM_TTYPE): Correct typo of TARGET_ARM_TTYPE.
        * config/arm/unwind-arm.c (__gnu_Unwind_Backtrace): Remove unused
        label.

2009-10-30  Martin Jambor  <mjambor@suse.cz>

        * tree-sra.c (build_ref_for_offset_1): Remove a comment.

2009-10-30  H.J. Lu  <hongjiu.lu@intel.com>

        PR target/40838
        * cfgexpand.c (expand_stack_alignment): Call update_stack_boundary
        first.  Move assert on stack_alignment_estimated just before
        setting stack_realign_needed.
        (gimple_expand_cfg): Initialize stack_alignment_estimated to 0.
        Don't call update_stack_boundary.

        * config/i386/i386.c (ix86_minimum_incoming_stack_boundary): New.
        (verride_options): Don't check ix86_force_align_arg_pointer here.
        (ix86_function_ok_for_sibcall): Use it.
        (ix86_update_stack_boundary): Likewise.

        * config/i386/i386.h (STACK_REALIGN_DEFAULT): Update comments.

2009-10-30  Richard Earnshaw  <rearnsha@arm.com>

        * arm.md (QHSI): New mode iterator.
        (movqi): If generating for thumb, then truncate any immediate to
        8 bits.
        * thumb2.md (thumb2_movsi_shortim and peephole2 generator): Replace
        with...
        (thumb2_mov<mode>_shortim and peephole2 generator): ... iterator based
        version.

2009-10-29  Cary Coutant  <ccoutant@google.com>

        PR debug/41700
        * dwarf2out.c (dwarf2_debug_hooks): Add entries for new hook (two
        locations in the source).
        (store_vcall_insn): New function.
        (lookup_vcall_insn): New function.
        (dwarf2out_virtual_call_token): Use store_vcall_insn.
        (dwarf2out_copy_call_info): New function.
        (dwarf2out_virtual_call): Use lookup_vcall_insn.
        * emit-rtl.c (try_split): Call copy_call_info debug hook.
        * debug.h (struct gcc_debug_hooks): Add copy_call_info hook.
        * debug.c (do_nothing_debug_hooks): Add dummy entry for new hook.
        (debug_nothing_rtx_rtx): New dummy hook.
        * dbxout.c (dbx_debug_hooks): Add dummy entry for new hook.
        (xcoff_debug_hooks): Likewise.
        * sdbout.c (sdb_debug_hooks): Likewise.
        * vmsdbgout.c (vmsdbg_debug_hooks): Likewise.

2009-10-29  David Daney  <ddaney@caviumnetworks.com>

        * doc/invoke.texi (mmcount-ra-address): Document new command line
        option.
        * config/mips/mips.opt (mmcount-ra-address): New option.
        * config/mips/mips-protos.h (mips_function_profiler): Declare new
        function.
        * config/mips/mips.c (struct mips_frame_info): Add ra_fp_offset
        member.
        (mips_for_each_saved_gpr_and_fpr): Set ra_fp_offset.
        (mips_function_profiler): Moved from FUNCTION_PROFILER, and
        rewritten.
        * config/mips/mips.h (FUNCTION_PROFILER): Body of macro moved to
        mips_function_profiler.

2009-10-29  Steve Ellcey  <sje@cup.hp.com>

        PR middle-end/37565
        PR target/38018
        * doc/tm.texi (OVERRIDE_OPTIONS): Update.
        (TARGET_OVERRIDE_OPTIONS_AFTER_CHANGE): New.
        * optc-gen.awk (cl_target_option_restore): Include call to 
        targetm.override_options_after_change.
        * target-def.h (TARGET_OVERRIDE_OPTIONS_AFTER_CHANGE): New.
        * target.h (override_options_after_change): New.
        * c-common.c (parse_optimize_options): Call
        targetm.override_options_after_change.
        * config/ia64/ia64.c (TARGET_OVERRIDE_OPTIONS_AFTER_CHANGE): New.
        (ia64_override_options_after_change): New.
        (ia64_override_options) Add call to above.

2009-10-29  Michael Matz  <matz@suse.de>

        * tree-ssa-math-opts.c (execute_convert_to_rsqrt): Remove.
        (gate_convert_to_rsqrt): Ditto.
        (pass_convert_to_rsqrt): Ditto.
        * tree-pass.h (pass_convert_to_rsqrt): Don't declare.
        * passes.c (init_optimization_passes): Don't add pass_convert_to_rsqrt
        to pass list.

        * config/i386/i386.c (ix86_emit_swdivsf): Change evaluation order.

2009-10-29  Ramana Radhakrishnan  <ramana.radhakrishnan@arm.com>

        * config/arm/arm.c (find_best_start): Fix type of remainder to be
        unsigned .

2009-10-29  Martin Jambor  <mjambor@suse.cz>

        PR tree-optimization/41775
        * tree-sra.c (build_ref_for_offset): Unshare *expr if not NULL.
        (generate_subtree_copies): Do not unshare agg.
        (load_assign_lhs_subreplacements): Do not unshare rhs.
        (sra_modify_assign): Do not unshare exprs.
        (propagate_subacesses_accross_link): Renamed to
        propagate_subaccesses_across_link.

2009-10-29  Richard Earnshaw  <rearnsha@arm.com>

        * arm.c (count_insns_for_constant): Rework to support counting for
        thumb2 immediates as well.
        (find_best_start): Split out from arm_gen_constant.
        (arm_gen_constant): Rework to support XOR with immediate.

2009-10-29  Chao-ying Fu  <fu@mips.com>

        * config/mips/mips.c (mips_emit_unary, mips_force_unary): New
        functions.
        (mips_expand_synci_loop):  Use the length rtx to control the
        synci loop from the begin rtx that points to the first byte of
        the cache line.

2009-10-28  Rafael Avila de Espindola  <espindola@google.com>

        * doc/invoke.texi: Rename -use-linker-plugin -fuse-linker-plugin.

2009-10-28  Rafael Avila de Espindola  <espindola@google.com>

        * dbxout.c (dbxout_common_check): Accept non public trees.
        * dwarf2out.c (fortran_common): Accept non public trees.

2009-10-28  Rafael Avila de Espindola  <espindola@google.com>

        * common.opt (fuse-linker-plugin): New option.
        * gcc.c (LINK_COMMAND_SPEC, main): Rename use-linker-plugin to
        fuse-linker-plugin.
        * opts.c (common_handle_option): Ignore OPT_fuse_linker_plugin.

2009-10-28  Paolo Bonzini  <bonzini@gnu.org>

        PR rtl-optimization/39715
        * config/arm/arm.md (cstoresi4): Use gen_cstoresi_ltu_thumb1.
        (gen_cstoresi_ltu_thumb1): New splitter.

2009-10-28  Richard Guenther  <rguenther@suse.de>

        PR lto/41808
        PR lto/41839
        * tree-ssa.c (useless_type_conversion_p): Do not treat
        conversions to pointers to incomplete types as useless.
        * gimple.c (gimple_types_compatible_p): Compare struct tags,
        not typedef names.

2009-10-28  Jakub Jelinek  <jakub@redhat.com>

        * var-tracking.c (emit_note_insn_var_location): Don't call the second
        vt_expand_loc unnecessarily when location is not a register nor
        memory.

        PR middle-end/41837
        * ipa-struct-reorg.c (find_field_in_struct_1): Return NULL if
        fields don't have DECL_NAME.

        PR debug/41801
        * builtins.c (get_builtin_sync_mem): Expand loc in ptr_mode,
        call convert_memory_address on addr.

        PR target/41762
        * config/i386/i386.c (ix86_pic_register_p): Don't call
        rtx_equal_for_cselib_p for VALUEs discarded as useless.

2009-10-28  Richard Sandiford  <rdsandiford@googlemail.com>

        * var-tracking.c (emit_note_insn_var_location): Get the mode of
        a variable part from its REG, MEM or VALUE.

2009-10-28  Richard Guenther  <rguenther@suse.de>

        * gimple.c (gimple_get_alias_set): Fix comment typo.

2009-10-28  Richard Guenther  <rguenther@suse.de>

        * tree.c (free_lang_data_in_type): Do not call get_alias_set.
        (free_lang_data): Unconditionally compute alias sets for all
        standard integer types.  Bail out if gate bailed out previously.
        Do not reset the types_compatible_p langhook.
        (gate_free_lang_data): Remove.
        (struct pass_ipa_free_lang_data): Enable unconditionally.
        * gimple.c (gimple_get_alias_set): Use the same alias-set for
        all pointer types.

2009-10-28  Richard Guenther  <rguenther@suse.de>

        PR middle-end/41855
        * tree-ssa-alias.c (refs_may_alias_p_1): Deal with CONST_DECLs
        (ref_maybe_used_by_call_p_1): Fix bcopy handling.
        (call_may_clobber_ref_p_1): Likewise.
        * tree-ssa-structalias.c (find_func_aliases): Likewise.
        * alias.c (nonoverlapping_memrefs_p): Deal with CONST_DECLs.

2009-10-28  Paolo Bonzini  <bonzini@gnu.org>

        PR rtl-optimization/41812

        Revert:
        2009-06-27  Paolo Bonzini  <bonzini@gnu.org>

        * df-problems.c (df_md_scratch): New.
        (df_md_alloc, df_md_free): Allocate/free it.
        (df_md_local_compute): Only include live registers in init.
        (df_md_transfer_function): Prune the in-set computed by
        the confluence function, and the gen-set too.

2009-10-28  Paolo Bonzini  <bonzini@gnu.org>

        PR rtl-optimization/39715
        * combine.c (simplify_comparison): Use extensions to
        widen comparisons.  Try an ANDing first.

2009-10-28  Paolo Bonzini  <bonzini@gnu.org>

        PR rtl-optimization/40741
        * config/arm/arm.c (thumb1_rtx_costs): IOR or XOR with
        a small constant is cheap.
        * config/arm/arm.md (andsi3, iorsi3): Try to place the result of
        force_reg on the LHS.
        (xorsi3): Likewise, and split the XOR if the constant is complex
        and not in Thumb mode.

2009-10-28  Paolo Bonzini  <bonzini@gnu.org>

        * expmed.c (emit_store_flag): Check costs before
        transforming to the opposite representation.

2009-10-28  Paolo Bonzini  <bonzini@gnu.org>

        * config/sh/sh.md (cbranchfp4_media): Remove hack extending
        cstore result to DImode.

2009-10-28  Kaz Kojima  <kkojima@gcc.gnu.org>

        * config/sh/sh.md (stuff_delay_slot): Move const_int pattern
        inside the unspec vector.

2009-10-27  Richard Henderson  <rth@redhat.com>

        * cgraphunit.c (cgraph_optimize): Maintain timevar stack properly.

2009-10-27  Richard Henderson  <rth@redhat.com>

        PR c++/41819
        * tree-eh.c (eh_region_may_contain_throw_map): Rename from
        eh_region_may_contain_throw; update users.
        (eh_region_may_contain_throw): New function.
        (lower_catch): Check flag_exceptions before creating exception region.
        (lower_eh_filter, lower_eh_must_not_throw): Likewise.
        (lower_cleanup): Tidy existing flag_exceptions check to match.

2009-10-27  Kai Tietz <kai.tietz@onevision.com>

        PR/41799
        * config/i386/mingw32.h (CHECK_EXECUTE_STACK_ENABLED): New macro.
        * config/i386/mingw.opt: Add fset-stack-executable.
        * config/i386/i386.c (ix86_trampoline_init): Make call to
        emit_library_call conditional, if CHECK_EXECUTE_STACK_ENABLED is
        defined and its value is not zero.
        * doc/invoke.texi

2009-10-27  Richard Guenther  <rguenther@suse.de>

        * tree-ssa-structalias.c (find_func_aliases): In IPA mode
        handle calls to externally visible functions like in regular mode.
        (create_variable_info_for): Do not create function infos here.
        (have_alias_info): Remove write-only variable.
        (solve_constraints): New function split out from common code
        in compute_points_to_sets and ipa_pta_execute.
        (compute_points_to_sets): Adjust.
        (ipa_pta_execute): Likewise.  Handle clones and externally visible
        functions like in non-IPA mode.

2009-10-27  Jakub Jelinek  <jakub@redhat.com>

        PR c/41842
        * c-typeck.c (convert_arguments): Return -1 if any of the arguments is
        error_mark_node.

2009-10-27  Richard Guenther  <rguenther@suse.de>

        * tree-complex.c (expand_complex_div_wide): Check for
        INTEGER_CST, not TREE_CONSTANT on comparison folding result.

2009-10-27  Revital Eres  <eres@il.ibm.com>

        PR tree-optimization/40648
        * tree-vect-data-refs.c (vect_enhance_data_refs_alignment):
        Change decision of when to peel for alignment.

2009-10-27  Richard Guenther  <rguenther@suse.de>

        PR lto/41821
        * gimple.c (gimple_types_compatible_p): Handle OFFSET_TYPE.

2009-10-27  Aldy Hernandez  <aldyh@redhat.com>

        PR bootstrap/41451
        * fold-const.c (fold_binary_loc): Do not call
        protected_set_expr_location.

2009-10-27  Wei Guozhi  <carrot@google.com>

        PR target/41705
        * target.h (have_conditional_execution): Add a new target hook
        function.
        * target-def.h (TARGET_HAVE_CONDITIONAL_EXECUTION): Likewise.
        * targhooks.h (default_have_conditional_execution): Likewise.
        * targhooks.c (default_have_conditional_execution): Likewise.
        * doc/tm.texi (TARGET_HAVE_CONDITIONAL_EXECUTION): Document it.
        * config/arm/arm.c (TARGET_HAVE_CONDITIONAL_EXECUTION): Define it.
        (arm_have_conditional_execution): New function.
        * ifcvt.c (noce_process_if_block, find_if_header,
        cond_exec_find_if_block, dead_or_predicable): Change the usage of
        macro HAVE_conditional_execution to a target hook call.
        * recog.c (peephole2_optimize): Likewise.
        * sched-rgn.c (add_branch_dependences): Likewise.
        * final.c (asm_insn_count, final_scan_insn): Likewise.
        * bb-reorder.c (HAVE_conditional_execution): Remove it.

2009-10-26  Ben Elliston  <bje@au.ibm.com>
            Michael Meissner  <meissner@linux.vnet.ibm.com>
            Ulrich Weigand  <uweigand@de.ibm.com>

        * config.gcc (spu-*-elf*): Add spu_cache.h to extra_headers.
        * config/spu/spu_cache.h: New file.

        * config/spu/cachemgr.c: New file.
        * config/spu/cache.S: New file.

        * config/spu/spu.h (ASM_OUTPUT_SYMBOL_REF): Define.
        (ADDR_SPACE_EA): Define.
        (TARGET_ADDR_SPACE_KEYWORDS): Define.
        * config/spu/spu.c (EAmode): New macro.
        (TARGET_ADDR_SPACE_POINTER_MODE): Define.
        (TARGET_ADDR_SPACE_ADDRESS_MODE): Likewise.
        (TARGET_ADDR_SPACE_LEGITIMATE_ADDRESS_P): Likewise.
        (TARGET_ADDR_SPACE_LEGITIMIZE_ADDRESS): Likewise.
        (TARGET_ADDR_SPACE_SUBSET_P): Likewise.
        (TARGET_ADDR_SPACE_CONVERT): Likewise.
        (TARGET_ASM_SELECT_SECTION): Likewise.
        (TARGET_ASM_UNIQUE_SECTION): Likewise.
        (TARGET_ASM_UNALIGNED_SI_OP): Likewise.
        (TARGET_ASM_ALIGNED_DI_OP): Likewise.
        (ea_symbol_ref): New function.
        (spu_legitimate_constant_p): Handle __ea qualified addresses.
        (spu_addr_space_legitimate_address_p): New function.
        (spu_addr_space_legitimize_address): Likewise.
        (cache_fetch): New global.
        (cache_fetch_dirty): Likewise.
        (ea_alias_set): Likewise.
        (ea_load_store): New function.
        (ea_load_store_inline): Likewise.
        (expand_ea_mem): Likewise.
        (spu_expand_mov): Handle __ea qualified memory references.
        (spu_addr_space_pointer_mode): New function.
        (spu_addr_space_address_mode): Likewise.
        (spu_addr_space_subset_p): Likewise.
        (spu_addr_space_convert): Likewise.
        (spu_section_type_flags): Handle "._ea" section.
        (spu_select_section): New function.
        (spu_unique_section): Likewise.
        * config/spu/spu-c.c (spu_cpu_cpp_builtins): Support __EA32__
        and __EA64__ predefined macros.
        * config/spu/spu-elf.h (LIB_SPEC): Handle -mcache-size= and
        -matomic-updates switches.

        * config/spu/t-spu-elf (MULTILIB_OPTIONS): Define.
        (EXTRA_MULTILIB_PARTS): Add libgcc_cachemgr.a,
        libgcc_cachemgr_nonatomic.a, libgcc_cache8k.a, libgcc_cache16k.a,
        libgcc_cache32k.a, libgcc_cache64k.a, libgcc_cache128k.a.
        ($(T)cachemgr.o, $(T)cachemgr_nonatomic.o): New target.
        ($(T)cache8k.o, $(T)cache16k.o, $(T)cache32k.o, $(T)cache64k.o,
        $(T)cache128k.o): Likewise.
        ($(T)libgcc_%.a): Likewise.

        * config/spu/spu.h (TARGET_DEFAULT): Add MASK_ADDRESS_SPACE_CONVERSION.
        * config/spu/spu.opt (-mea32/-mea64): Add switches.
        (-maddress-space-conversion): Likewise.
        (-mcache-size=): Likewise.
        (-matomic-updates): Likewise.
        * doc/invoke.texi (-mea32/-mea64): Document.
        (-maddress-space-conversion): Likewise.
        (-mcache-size=): Likewise.
        (-matomic-updates): Likewise.

2009-10-26  Ben Elliston  <bje@au.ibm.com>
            Michael Meissner  <meissner@linux.vnet.ibm.com>
            Ulrich Weigand  <uweigand@de.ibm.com>

        * doc/tm.texi (TARGET_ADDR_SPACE_KEYWORDS): Document.

        * c-common.c (c_common_reswords): If TARGET_ADDR_SPACE_KEYWORDS is
        defined, add the named address space keywords.
        (c_addr_space_name): New function.
        (complete_array_type): Preserve named address space.
        (handle_mode_attribute): Use targetm.addr_space.valid_pointer_mode
        instead of targetm.valid_pointer_mode.

        * c-common.h (enum rid): Add RID_ADDR_SPACE_0 .. RID_ADDR_SPACE_15,
        RID_FIRST_ADDR_SPACE and RID_LAST_ADDR_SPACE.
        (ADDR_SPACE_KEYWORD): New macro.
        (c_addr_space_name): Add prototype.

        * c-tree.h (struct c_declspecs): Add address_space member.
        (declspecs_add_addrspace): Add prototype.

        * c-pretty-print.c (pp_c_type_qualifier_list): Handle address spaces.

        * c-parser.c (c_parse_init): Add assertion.
        (typedef enum c_id_kind): Add C_ID_ADDRSPACE.
        (c_lex_one_token): Handle address space keywords.
        (c_token_starts_typename): Likewise.
        (c_token_starts_declspecs): Likewise.
        (c_parser_declspecs): Likewise.
        (c_parser_postfix_expression_after_paren_type): Diagnose compound
        literal within function qualified with named address space.

        * c-decl.c (diagnose_mismatched_decls): Diagnose conflicting named
        address space qualifiers.
        (shadow_tag_warned): Warn about useless address space qualifiers.
        (quals_from_declspecs): Handle address space qualifiers.
        (grokdeclarator): Likewise.
        (build_null_declspecs): Likewise.
        (declspecs_add_addrspace): New function.

        * c-typeck.c (addr_space_superset): New function.
        (qualify_type): Handle named address spaces.
        (composite_type): Likewise.
        (common_pointer_type): Likewise.
        (comp_target_types): Likewise.
        (build_conditional_expr): Likewise.
        (handle_warn_cast_qual): Likewise.
        (build_c_cast): Likewise.
        (convert_for_assignment): Likewise.
        (build_binary_op): Likewise.
        (pointer_diff): Handle named address spaces.  Use intermediate
        integer type of sufficient size if required.

2009-10-26  Ben Elliston  <bje@au.ibm.com>
            Michael Meissner  <meissner@linux.vnet.ibm.com>
            Ulrich Weigand  <uweigand@de.ibm.com>

        * doc/tm.texi (TARGET_ADDR_SPACE_POINTER_MODE): Document.
        (TARGET_ADDR_SPACE_ADDRESS_MODE): Likewise.
        (TARGET_ADDR_SPACE_VALID_POINTER_MODE): Likewise.

        * target.h (struct target_def): Add pointer_mode, address_mode,
        and valid_pointer_mode to addr_space substructure.
        * target-def.h (TARGET_ADDR_SPACE_POINTER_MODE): Define.
        (TARGET_ADDR_SPACE_ADDRESS_MODE): Likewise.
        (TARGET_ADDR_SPACE_VALID_POINTER_MODE): Likewise.
        (TARGET_ADDR_SPACE_HOOKS): Add them.
        * targhooks.c (target_default_pointer_address_modes_p): New function.
        * target.h (target_default_pointer_address_modes_p): Add prototype.
        * targhooks.c (default_addr_space_pointer_mode): New function.
        (default_addr_space_address_mode): Likewise.
        (default_addr_space_valid_pointer_mode): Likewise.
        * targhooks.h (default_addr_space_pointer_mode): Add prototype.
        (default_addr_space_address_mode): Likewise.
        (default_addr_space_valid_pointer_mode): Likewise.
        * output.h (default_valid_pointer_mode): Move to ...
        * targhooks.h (default_valid_pointer_mode): ... here.
        * varasm.c (default_valid_pointer_mode): Move to ...
        * targhooks.c (default_valid_pointer_mode): ... here.

        * varasm.c (output_constant): Use targetm.addr_space.valid_pointer_mode
        instead of targetm.valid_pointer_mode.

        * fold-const.c (fit_double_type): Use int_or_pointer_precision.
        * tree.c (integer_pow2p): Likewise.
        (tree_log2): Likewise.
        (tree_floor_log2): Likewise.
        (signed_or_unsigned_type_for): Support pointer type of different size.
        (int_or_pointer_precision): New function.
        * tree.h (int_or_pointer_precision): Add prototype.
        * stor-layout.c (layout_type): Set TYPE_PRECISION for offset types.
        * varasm.c (initializer_constant_valid_p): Use TYPE_PRECISION of
        incoming pointer type instead of POINTER_SIZE.

        * tree.c (build_pointer_type): Use appropriate pointer mode
        instead of ptr_mode.
        (build_reference_type): Likewise.
        * expr.c (store_expr): Likewise.
        (expand_expr_addr_expr): Likewise.
        * tree-vect-data-refs.c (vect_create_data_ref_ptr): Likewise.
        * cfgexpand.c (expand_debug_expr): Likewise.

        * auto-inc-dec.c: Include "target.h".
        (try_merge): Use appropriate address mode instead of Pmode.
        (find_inc): Likewise.
        * combine.c (find_split_point): Likewise.
        * cselib.c (cselib_record_sets): Likewise.
        * dse.c (replace_inc_dec): Likewise.
        (canon_address): Likewise.
        * var-tracking.c (replace_expr_with_values): Likewise.
        (count_uses): Likewise.
        (add_uses): Likewise.
        (add_stores): Likewise.
        * emit-rtl.c: Include "target.h".
        (adjust_address_1): Use appropriate address mode instead of Pmode.
        (offset_address): Likewise.
        * explow.c (break_out_memory_refs): Likewise.
        (memory_address_addr_space): Likewise.
        (promote_mode): Likewise.
        * expr.c (move_by_pieces): Likewise.
        (emit_block_move_via_loop): Likewise.
        (store_by_pieces): Likewise.
        (store_by_pieces_1): Likewise.
        (expand_assignment): Likewise.
        (store_constructor): Likewise.
        (expand_expr_addr_expr): Likewise.
        (expand_expr_real_1): Likewise.
        * cfgexpand.c (expand_debug_expr): Likewise.
        * ifcvt.c (noce_try_cmove_arith): Likewise.
        * regcprop.c (kill_autoinc_value): Likewise.
        * regmove.c (try_auto_increment): Likewise.
        * reload.c (find_reloads): Likewise.
        (find_reloads_address): Likewise.
        (find_reloads_address_1): Likewise.
        * sched-deps.c: Include "target.h".
        (sched_analyze_1): Use appropriate address mode instead of Pmode.
        (sched_analyze_2): Likewise.
        * sel-sched-dump.c: Include "target.h".
        (debug_mem_addr_value): Use appropriate address mode instead of Pmode.
        * stor-layout.c (layout_type): Likewise.
        * tree-ssa-loop-ivopts.c (produce_memory_decl_rtl): Likewise.
        (multiplier_allowed_in_address_p): Likewise.
        (get_address_cost): Likewise.
        * varasm.c (make_decl_rtl): Likewise.

        * expr.c (expand_assignment): Always convert offsets to appropriate
        address mode.
        (store_expr): Likewise.
        (store_constructor): Likewise.
        (expand_expr_real_1): Likewise.

        * reload.h (form_sum): Add MODE argument.
        * reload.c (form_sum): Add MODE argument, use it instead of Pmode.
        Update recursive calls.
        (subst_indexed_address): Update calls to form_sum.

        * tree-flow.h (addr_for_mem_ref): Add ADDRSPACE argument.
        * tree-ssa-address.c: Include "target.h".
        (templates): Replace by ...
        (mem_addr_template_list): ... this new vector.
        (TEMPL_IDX): Handle address space numbers.
        (gen_addr_rtx): Add address mode argument, use it instead of Pmode.
        (addr_for_mem_ref): Add ADDRSPACE argument.  Use per-address-space
        instead of global cache.  Update call to gen_addr_rtx.
        (valid_mem_ref_p): Update call to addr_for_mem_ref.
        * expr.c (expand_expr_real_1): Update call to addr_for_mem_ref.

        * rtl.h (convert_memory_address_addr_space): Add prototype.
        (convert_memory_address): Define as macro.
        * explow.c (convert_memory_address): Rename to ...
        (convert_memory_address_addr_space): ... this.  Add ADDRSPACE argument.
        Use appropriate pointer and address modes instead of ptr_mode / Pmode.
        Update recursive calls.
        (memory_address_addr_space): Call convert_memory_address_addr_space.
        * expmed.c (make_tree): Likewise.
        * expr.c (expand_assignment): Likewise.
        (expand_expr_addr_expr_1): Likewise.  Also, add ADDRSPACE argument.
        (expand_expr_addr_expr): Likewise.  Also, update call.

        * alias.c (find_base_value): Guard pointer size optimizations.
        (find_base_term): Likewise.
        * rtlanal.c (nonzero_bits1): Likewise.
        (num_sign_bit_copies1): Likewise.
        * simplify-rtx.c (simplify_unary_operation_1): Likewise.

        * Makefile.in (tree-ssa-address.o): Add $(TARGET_H) dependency.
        (emit-rtl.o): Likewise.
        (auto-inc-dec.o): Likewise.
        (sched-deps.o): Likewise.

2009-10-26  Ben Elliston  <bje@au.ibm.com>
            Michael Meissner  <meissner@linux.vnet.ibm.com>
            Ulrich Weigand  <uweigand@de.ibm.com>

        * doc/extend.texi (Named Address Spaces): New section.
        * coretypes.h (addr_space_t): New type.
        (ADDR_SPACE_GENERIC): New define.
        (ADDR_SPACE_GENERIC_P): New macro.

        * doc/tm.texi (Named Address Spaces): New section.
        (TARGET_ADDR_SPACE_LEGITIMATE_ADDRESS_P): Document.
        (TARGET_ADDR_SPACE_LEGITIMIZE_ADDRESS): Document.
        (TARGET_ADDR_SPACE_SUBSET_P): Document.
        (TARGET_ADDR_SPACE_CONVERT): Document.
        * target.h (struct gcc_target): Add addr_space substructure.
        * target-def.h (TARGET_ADDR_SPACE_LEGITIMATE_ADDRESS_P): Define.
        (TARGET_ADDR_SPACE_LEGITIMIZE_ADDRESS): Likewise.
        (TARGET_ADDR_SPACE_SUBSET_P): Likewise.
        (TARGET_ADDR_SPACE_CONVERT): Likewise.
        (TARGET_ADDR_SPACE_HOOKS): Likewise.
        (TARGET_INITIALIZER): Initialize addr_space hooks.
        * targhooks.c (default_addr_space_legitimate_address_p): New function.
        (default_addr_space_legitimize_address): Likewise.
        (default_addr_space_subset_p): Likewise.
        (default_addr_space_convert): Likewise.
        * targhooks.h (default_addr_space_legitimate_address_p): Add prototype.
        (default_addr_space_legitimize_address): Likewise.
        (default_addr_space_subset_p): Likewise.
        (default_addr_space_convert): Likewise.

        * doc/rtl.texi (MEM_ADDR_SPACE): Document.
        * rtl.h (mem_attrs): Add ADDRSPACE memory attribute.
        (MEM_ADDR_SPACE): New macro.
        * emit-rtl.c (get_mem_attrs): Add ADDRSPACE argument and set
        address space memory attribute.
        (mem_attrs_htab_hash): Handle address space memory attribute.
        (mem_attrs_htab_eq): Likewise.
        (set_mem_attributes_minus_bitpos): Likewise.
        (set_mem_alias_set): Likewise.
        (set_mem_align): Likewise.
        (set_mem_expr): Likewise.
        (set_mem_offset): Likewise.
        (set_mem_size): Likewise.
        (adjust_address_1): Likewise.
        (offset_address): Likewise.
        (widen_memoy_address): Likewise.
        (get_spill_slot_decl): Likewise.
        (set_mem_attrs_for_spill): Likewise.
        (set_mem_addr_space): New function.
        * emit-rtl.h (set_mem_addr_space): Add prototype.
        * print-rtl.c (print_rtx): Print address space memory attribute.
        * expr.c (expand_assignment): Set address space memory attribute
        of generated MEM RTXes as appropriate.
        (expand_expr_real_1): Likewise.
        * cfgexpand.c (expand_debug_expr): Likewise.
        * tree-ssa-loop-ivopts.c (produce_memory_decl_rtl): Likewise.

        * tree.h (struct tree_base): Add address_space bitfield.  Reduce
        size of "spare" bitfield.
        (TYPE_ADDR_SPACE): New macro.
        (ENCODE_QUAL_ADDR_SPACE): Likewise.
        (DECODE_QUAL_ADDR_SPACE): Likewise.
        (CLEAR_QUAL_ADDR_SPACE): Likewise.
        (KEEP_QUAL_ADDR_SPACE): Likewise.
        (TYPE_QUALS): Encode type address space.
        (TYPE_QUALS_NO_ADDR_SPACE): New macro.
        * tree.c (set_type_quals): Set type address space.
        (build_array_type): Inherit array address space from element type.
        * print-tree.c (print_node_brief): Print type address space.
        (print_node): Likewise.
        * tree-pretty-print.c (dump_generic_node): Likewise.

        * explow.c (memory_address): Rename to ...
        (memory_address_addr_space): ... this.  Add ADDRSPACE argument.
        Use address-space aware variants of memory address routines.
        * recog.c (memory_address_p): Rename to ...
        (memory_address_addr_space_p): ... this.  Add ADDSPACE argument.
        Use address-space aware variants of memory address routines.
        (offsettable_address_p): Rename to ...
        (offsettable_address_addr_space_p): ... this.  Add ADDRSPACE argument.
        Use address-space aware variants of memory address routines.
        * reload.c (strict_memory_address_p): Rename to ...
        (strict_memory_address_addr_space_p): ... this.  Add ADDSPACE argument.
        Use address-space aware variants of memory address routines.
        (maybe_memory_address_p): Rename to ...
        (maybe_memory_address_addr_space_p): ... this.  Add ADDSPACE argument.
        Use address-space aware variants of memory address routines.
        * expr.h (memory_address_addr_space): Add prototype.
        (memory_address): Define as macro.
        * recog.h (memory_address_addr_space_p): Add prototype.
        (memory_address_p): Define as macro.
        (offsettable_address_addr_space_p): Add prototype.
        (offsettable_address_p): Define as macro.
        (strict_memory_address_addr_space_p): Add prototype.
        (strict_memory_address_p): Define as macro.

        * combine.c (find_split_point): Use address-space aware variants
        of memory address routines.
        * emit-rtl.c (operand_subword): Likewise.
        (change_address_1): Likewise.
        (adjust_address_1): Likewise.
        (offset_address): Likewise.
        * expr.c (emit_move_insn): Likewise.
        (expand_assignment): Likewise.
        (expand_expr_real_1): Likewise.
        * recog.c (verify_changes): Likewise.
        (general_operand): Likewise.
        (offsettable_memref_p): Likewise.
        (offsettable_nonstrict_memref_p): Likewise.
        (constrain_operands): Likewise.
        * reload.c (get_secondary_mem): Likewise.
        (find_reloads_toplev): Likewise.
        (find_reloads_address): Likewise.
        (find_reloads_subreg_address): Likewise.
        * reload1.c (reload): Likewise.
        * rtlhooks.c (gen_lowpart_if_possible): Likewise.
        * rtl.h (address_cost): Add ADDRSPACE argument.
        * rtlanal.c (address_cost): Add ADDRSPACE argument.  Use address-space
        aware variant of memory address routines.
        * loop-invariant.c (create_new_invariant): Update address_cost call.
        * tree-ssa-loop-ivopts.c (computation_cost): Likewise.
        * fwprop.c (should_replace_address): Add ADDRSPACE argument.
        Use address-space aware variant of memory address routines.
        (propagate_rtx_1): Update call to should_replace_address.
        * tree-flow.h (multiplier_allowed_in_address_p): Add ADDRSPACE
        argument.
        * tree-ssa-loop-ivopts.c (multiplier_allowed_in_address_p): Add
        ADDRSPACE argument.  Use per-address-space instead of global cache.
        Use address-space aware variant of memory address routines.
        (get_address_cost): Likewise.
        (get_computation_cost_at): Update calls.
        * tree-ssa-address.c (valid_mem_ref_p): Add ADDRSPACE argument.
        Use address-space aware variant of memory address routines.
        (create_mem_ref_raw): Update call to valid_mem_ref_p.
        (most_expensive_mult_to_index): Update call to
        multiplier_allowed_in_address_p.

        * dwarf2out.c (modified_type_die): Output DW_AT_address_class
        attribute to indicate named address spaces.

        * varasm.c (get_variable_section): DECLs in named address spaces
        cannot be "common".

        * reload.c (find_reloads_address): Do not use LEGITIMIZE_RELOAD_ADDRESS
        for addresses in a non-generic address space.

        * expr.c (emit_block_move_hints): Do not use libcalls for
        memory in non-generic address spaces.
        (clear_storage_hints): Likewise.
        (expand_assignment): Likewise.

        * fold-const.c (operand_equal_p): Expressions refering to different
        address spaces are not equivalent.

        * rtl.c (rtx_equal_p_cb): MEMs refering to different address
        spaces are not equivalent.
        (rtx_equal_p): Likewise.
        * cse.c (exp_equiv_p): Likewise.
        * jump.c (rtx_renumbered_equal_p): Likewise.
        * reload.c (operands_match_p): Likewise.

        * alias.c (nonoverlapping_memrefs_p): MEMs refering to different
        address spaces may alias.
        (true_dependence): Likewise.
        (canon_true_dependence): Likewise.
        (write_dependence_p): Likewise.

        * dse.c (canon_address): Handle named address spaces.
        * ifcvt.c (noce_try_cmove_arith): Likewise.

        * tree.def (ADDR_SPACE_CONVERT_EXPR): New tree code.
        * expr.c (expand_expr_real_2): Expand ADDR_SPACE_CONVERT_EXPR.
        * convert.c (convert_to_pointer): Generate ADDR_SPACE_CONVERT_EXPR
        to handle conversions between different address spaces.
        * fold-const.c (fold_convert_loc): Likewise.
        (fold_unary_loc): Handle ADDR_SPACE_CONVERT_EXPR.
        * tree-pretty-print.c (dump_generic_node): Likewise.
        * gimple-pretty-print.c (dump_unary_rhs): Likewise.
        * tree-cfg.c (verify_gimple_assign_unary): Likewise.
        * tree-inline.c (estimate_operator_cost): Likewise.
        * tree-ssa.c (useless_type_conversion_p): Conversions between pointers
        to different address spaces are not useless.

2009-10-26  Jakub Jelinek  <jakub@redhat.com>

        PR bootstrap/41345
        * cfgcleanup.c (trivially_empty_bb_p): New function.
        (try_optimize_bb): Use it instead of checking BB_HEAD == BB_END.

        PR debug/41828
        * dwarf2out.c (add_pubname, add_pubtype, generic_parameter_die,
        add_name_and_src_coords_attributes, gen_namespace_die,
        dwarf2out_set_name): Handle dwarf2_name returning NULL.

2009-10-26  Nick Clifton  <nickc@redhat.com>

        * config.gcc: Add support for RX target.
        * config/rx: New directory.
        * config/rx/constraints.md: New file.
        * config/rx/predicates.md: New file.
        * config/rx/rx.c: New file.
        * config/rx/rx.h: New file.
        * config/rx/rx.md: New file.
        * config/rx/rx.opt: New file.
        * config/rx/rx-protos.h: New file.
        * config/rx/t-rx: New file.
        * doc/extend.texi: Document RX function attributes.
        * doc/invoke.texi: Document RX specific command line options.
        * doc/contrib.texi: Document RX contribution.
        * doc/md.texi: Document RX constraints.
        * doc/install.texi: Document RX support.

2009-10-26  Michael Matz  <matz@suse.de>

        PR tree-optimization/41783
        * tree-ssa-alias.c (get_continuation_for_phi): Export, add a special
        case for simple diamonds.
        * tree-ssa-alias.h (get_continuation_for_phi): Declare.
        * tree-ssa-pre.c (translate_vuse_through_block): Add same_valid
        argument, use alias oracle to skip some vdefs.
        (phi_translate_1): Change call to above, don't allocate new
        value ids if they can stay the same.
        (compute_avail): Allow vuse walking when looking up references.

2009-10-26  Richard Guenther  <rguenther@suse.de>

        PR tree-optimization/41826
        * tree-ssa-structalias.c (get_constraint_for_ptr_offset): Avoid
        access to re-allocated vector fields.

2009-10-26  Richard Guenther  <rguenther@suse.de>

        * graphite-sese-to-poly.c (check_poly_representation): Fix
        compile without checking.

2009-10-26  Janus Weil  <janus@gcc.gnu.org>

        PR fortran/41714
        * gimple.h (tree_annotate_all_with_location): Remove prototype.
        * gimplify.c (tree_should_carry_location_p,
        tree_annotate_one_with_location,tree_annotate_all_with_location):
        Remove obsolete functions.

2009-10-25  Kaz Kojima  <kkojima@gcc.gnu.org>

        PR target/41813
        * config/sh/sh.md (stuff_delay_slot): Don't set T_REG in pattern.

2009-10-25  Richard Guenther  <rguenther@suse.de>

        * lto-streamer-in.c (unpack_ts_decl_common_value_fields):
        Stream DECL_RESTRICTED_P.
        * lto-streamer-out.c (pack_ts_decl_common_value_fields): Likewise.

2009-10-25  Richard Sandiford  <rdsandiford@googlemail.com>

        * config/mips/mips.c (mips_restore_gp_from_cprestore_slot): Emit
        a note when expanding to nothing.

2009-10-25  Richard Guenther  <rguenther@suse.de>

        PR middle-end/41814
        * tree.c (find_decls_types_r): Deal with Java overloading
        BINFO_VIRTUALS for its own purpose.

2009-10-24  Adam Nemet  <anemet@caviumnetworks.com>

        * config/mips/predicates.md (hilo_operand): New predicate.
        * config/mips/mips.md (<u>mulsidi3_64bit): Change it to a
        define_insn.  Correct !ISA_HAS_EXT_INS length from 24 to 28.  Move
        splitter part from here ...:
        (<u>mulsidi3_64bit splitter for !ISA_HAS_EXT_INS): ... to here.  Swap
        op0 and op4 to match the DINS case.
        (<u>mulsidi3_64bit splitter for ISA_HAS_EXT_INS): New splitter.

2009-10-24  Andy Hutchinson  <hutchinsonandy@gcc.gnu.org>

        PR middle-end/19154
        * avr.md (QIDI): Add new mode iterator.
        (sbrx_branch<mode>): Create new zero extract bit, test and jump
        patterns for all QI thru DI modes combinations.
        (sbrx_and_branch<mode>): Create new and based bit test and jump
        patterns for QI thru SI modes.
        avr.c (avr_out_sbxx_branch): Use only bit number.

2009-10-24  Jan Hubicka  <jh@suse.cz>

        * ipa-reference.c (check_call): Noreturn notrhow calls do not write
        to memory.
        (analyze_function): When analyzing noreturn nothrow call, do not
        compute written stats; free bitmaps of vars early if possible.
        (generate_summary): Only update bitmaps if computed.
        (propagate): Only dump bitmaps if computed.
        (ipa_reference_read_summary): Fix pasto.

2009-10-24  Eric Botcazou  <ebotcazou@adacore.com>

        * tree-ssa-alias.c (nonaliasing_component_refs_p): Rename into...
        (aliasing_component_refs_p): ...this.  Return true if there is no
        common base and the base access types have the same alias set.
        (indirect_ref_may_alias_decl_p): Adjust for above renaming.
        (indirect_refs_may_alias_p): Likewise.

2009-10-23  Joseph Myers  <joseph@codesourcery.com>

        PR c/40033
        * c-typeck.c (c_finish_stmt_expr): Do not wrap error_mark_node in
        a C_MAYBE_CONST_EXPR.

2009-10-23  Michael Meissner  <meissner@linux.vnet.ibm.com>

        PR target/41787
        * config/rs6000/rs6000.c (struct machine_function): Add
        vsx_or_altivec_used_p to record if vector types are used.
        (rs6000_expand_to_rtl_hook): Rename from
        rs6000_alloc_sdmode_stack_slot.  If VSX, check to see if there are
        any vector operations, so if there are, we can set VRSAVE to
        non-zero when only floating point vector registers are used.
        (TARGET_EXPAND_TO_RTL_HOOK): Use rs6000_expand_to_rtl_hook.
        (rs6000_check_vector_mode): Inner function to check if vector
        types are used in the code.
        (compute_vrsave_mask): If VSX, make sure VRSAVE is non-zero if
        vector instructions are used.

        * config/rs6000/rs6000.h (HARD_REGNO_CALL_PART_CLOBBERED):
        Indicate that VSX registers which overlap floating point
        registers, can't be used across a call, since the ABI only states
        the scalar part of the register will be saved and restored.

2009-10-23  Joseph Myers  <joseph@codesourcery.com>

        PR c/41673
        * alias.c (get_alias_set): Call langhook before returning 0 for
        types with structural equality.
        * c-common.c (c_common_get_alias_set): Use alias set of element
        type for arrays with structural comparison.

2009-10-23  Richard Guenther  <rguenther@suse.de>

        PR middle-end/41805
        * cfgexpand.c (expand_call_stmt): Use gimple_has_side_effects and
        gimple_call_nothrow_p.

2009-10-23  Richard Guenther  <rguenther@suse.de>

        PR tree-optimization/41778
        * tree-ssa-pre.c (do_regular_insertion): Only insert if a
        redundancy along a path in the CFG we want to optimize for speed
        is going to be removed.
        (execute_pre): Do partial-PRE only if the function is to be
        optimized for speed.
        (gate_pre): Do not turn off all of PRE when not optimizing a
        function for speed.

2009-10-23  Kaveh R. Ghazi  <ghazi@caip.rutgers.edu>

        * builtins.c (fold_builtin_cabs): Use validate_arg().
        (fold_builtin_cexp): Fix if-logic.
        (fold_builtin_1): Check subtype for BUILT_IN_CIMAG.

2009-10-22  Jeff Law  <law@redhat.com>

        * ira-lives.c (process_single_reg_class_operands): Update the
        hard reg costs for all the hard registers desired by the
        single reg class operand.

2009-10-22  Richard Sandiford  <rdsandiford@googlemail.com>

        * simplify-rtx.c (simplify_replace_fn_rtx): Add a fallback case
        for rtxes that aren't handled specially.

2009-10-22  Richard Sandiford  <rdsandiford@googlemail.com>

        * rtl.h (shallow_copy_rtvec): Declare.
        * rtl.c (shallow_copy_rtvec): New function.
        * cselib.c (cselib_subst_to_values): Use it.  Only modify an
        rtx field if the subrtx has changed.

2009-10-22  Anatoly Sokolov  <aesok@post.ru>

        * config/m32c/m32c.c (m32c_function_value_regno_p): New function.
        (m32c_function_value): Make static, add new 'outgoing' argument.
        (m32c_libcall_value): Make static, add new 'fun' argument.
        (TARGET_FUNCTION_VALUE, TARGET_LIBCALL_VALUE): Declare.
        * config/m32c/m32c.h (FUNCTION_VALUE, LIBCALL_VALUE): Remove.
        (FUNCTION_VALUE_REGNO_P): Redefine, use m32c_function_value_regno_p.
        * config/m32c/m32c-protos.h (m32c_function_value_regno_p): Declare.
        (m32c_function_value, m32c_libcall_value): Delete declaration.

2009-10-22  Diego Novillo  <dnovillo@google.com>

        * Makefile.in (PLUGIN_HEADERS): Add output.h and IPA_UTILS_H.

2009-10-22  Razya Ladelsky  <razya@il.ibm.com>

        * tree-cfg.c (gimple_duplicate_sese_tail): Fix typos/indentation/white
        space.

2009-10-22  Richard Guenther  <rguenther@suse.de>

        * lto-streamer.h (lto_symtab_merge_cgraph_nodes): Declare.
        * lto-symtab.c (struct lto_symtab_entry_def): Add node member.
        (lto_symtab_merge): Do not merge cgraph nodes here.
        (lto_symtab_resolve_can_prevail_p): Simplify.
        (lto_symtab_resolve_symbols): Store cgraph node.
        (lto_symtab_merge_decls_1): Simplify.  Do not drop non-prevailing
        functions from the symtab.
        (lto_symtab_merge_cgraph_nodes_1): New function.
        (lto_symtab_merge_cgraph_nodes): Likewise.

2009-10-22  Richard Guenther  <rguenther@suse.de>

        PR lto/41791
        * lto-streamer-out.c (lto_output_location): Stream the
        system header flag.
        * lto-streamer-in.c (lto_input_location): Likewise.

2009-10-22  Razya Ladelsky  <razya@il.ibm.com>

        * cfgloopmanip.c (duplicate_subloops): Export.
        * tree-parloops.c (loop_parallel_p): Dump if loop is innermost.
        (transform_to_exit_first_loop): Duplicate bbs starting from
        header up to loop->latch instead of exit->src.
        Initialize control variable to the correct number of iterations.
        (gather_scalar_reductions): Do not register double reductions.
        (parallelize_loops): Dump which loop is tested.
        Indicate whether the parallelized loop is inner or not.
        Remove the innermost-loop requirement.
        * cfgloop.h (duplicate_subloops): Export.
        * tree-cfg.c (add_phi_args_after_redirect): New function.
        (gimple_duplicate_sese_tail): Remove the no-subloops constraint.
        Call duplicate_subloops.
        Update number of iterations at the exit condition.
        Don't redirect nexits always to the loop exit.
        Redirect copied edges from latch to the loop exit.

2009-10-22  Jan Hubicka  <jh@suse.cz>

        * ipa-cp.c (ipcp_read_summary): Remove now invalid FIXME and
        flag_ltrans check.
        * ipa-inline.c (cgraph_mark_inline_edge,
        cgraph_decide_inlining_of_small_function,
        cgraph_decide_inlining, inline_read_summary): Disable indirect
        inlining for WPA for time being.

        PR tree-optimize/40556
        * ipa-inline.c (cgraph_early_inlining): Fix iterations condition.

2009-10-22  Richard Guenther  <rguenther@suse.de>

        * lto-streamer.h (lto_symtab_clear_resolution): Remove.
        * lto-symtab.c (lto_symtab_clear_resolution): Likewise.

2009-10-22  Jan Hubicka  <jh@suse.cz>

        PR lto/41730
        * ipa-reference.c (has_proper_scope_for_analysis): Add fixme about
        global vars.
        (check_call): Handle only indirect calls.
        (propagate_bits): Update comment.
        (write_node_summary_p): Turn bogus check to assert.
        (ipa_reference_write_summary): Stream calls_read_all properly.
        (ipa_reference_read_summary): Stream in calls_read_all properly.
        (read_write_all_from_decl): New function.
        (propagate): Handle OVERWRITABLE nodes and external calls here.
        * ipa-pre-const.c (check_call): In IPA mode handle indirect
        calls only.
        (analyze_function): Do not check visibility here.
        (add_new_function): We summary OVERWRITABLE too.
        (generate_summary): Stream OVERWRITABLE nodes too.
        (propagate): Handle external calls and OVERWRITABLE nodes here.
        (local_pure_const): Check visibility here.

2009-10-22  Jan Hubicka  <jh@suse.cz>

        * ipa-cp.c (ipcp_write_summary, ipcp_read_summary): New functions.
        (pass_ipa_cp): Register them.
        (ipcp_init_stage): Analyze all functions for whopr/lto.
        (ipcp_propagate_stage): Skip external calls.
        (ipcp_iterate_stage): Call ipa_update_after_lto_read if needed.
        * ipa-reference.c (write_node_summary_p): Fix thinko about
        availability.
        * cgraphunit.c (ipa_passes): When in lto, ne er produce new summaries;
        when in ltrans, skip executing of ipa passes since everything
        should've been done.
        * ipa-inline.c (cgraph_decide_inlining): Remove FIXMEs.
        (inline_generate_summary): Likewise.
        (inline_read_summary): New function.
        (inline_write_summary): New function.
        (pass_ipa_inline): Register new hooks.
        * ipa-prop.c: Inlcude lto-streamer.h
        (ipa_edge_args_vector): Update declaration.
        (ipa_count_arguments, ipa_compute_jump_functions,
        ipa_free_edge_args_substructures): Move ipa_edge_args_vector into ggc.
        (ipa_write_jump_function, ipa_read_jump_function, ipa_write_node_info,
        ipa_read_node_info): New static functions.
        (ipa_prop_write_jump_functions, ipa_prop_read_jump_functions): Update.
        (duplicate_array): Use xmalloc.
        (duplicate_ggc_array): New.
        (ipa_edge_duplication_hook): Use it.
        (ipa_update_after_lto_read): New function.
        * ipa-prop.h (ipa_prop_write_jump_functions,
        ipa_prop_read_jump_functions): Declare.
        (ipa_pass_through_data, ipa_ancestor_jf_data, ipa_member_ptr_cst,
        jump_func_value, ipa_member_ptr_cst, ipa_edge_args): Add GTY markers.
        (ipa_edge_args_vector): Move into GGC.
        (ipa_check_create_edge_args): Update.
        (ipa_update_after_lto_read): New.
        * passes.c (ipa_write_summaries_1): When in wpa, do not write
        summaries.
        (ipa_read_summaries): When in ltrans, so not read summaries.
        * lto-streamer.c (lto_get_section_name): Add
        LTO_section_jump_functions.
        * lto-streamer.h (LTO_section_jump_functions): New section.
        (produce_asm): Declare.
        * lto-cgraph.c (output_cgraph): Output edges in reverse order.
        * lto-streamer-out.c (produce_asm): Export.
        * lto-streamer-in.c: Include tree-pass.h
        (input_function): Free dominance info when done.
        (lto_read_body): Push ipa_inline in ltrans stage.
        * gengtype.c (open_base_files): Add ipa-prop.h into includes.
        * Makefile.in (GTFILES): Add ipa-prop.h

2009-10-22  Matthias Klose  <doko@ubuntu.com>

        * doc/install.texi: Document --enable-browser-plugin.

2009-10-21  Vladimir Makarov  <vmakarov@redhat.com>

        * doc/invoke.texi (fira-loop-pressure): Update default value.
        * opts.c (decode_options): Remove default value setting for
        flag_ira_loop_pressure.
        * config/ia64/ia64.c (ia64_override_options): Set
        flag_ira_loop_pressure up for -O3.
        * config/rs6000/rs6000.c (rs6000_override_options): Ditto.

2009-10-21  Sebastian Pop  <sebastian.pop@amd.com>

        PR tree-optimization/41497
        * tree-scalar-evolution.c (analyze_evolution_in_loop): Return
        chrec_dont_know if the evolution function returned by follow_ssa_edge
        is constant in the analyzed loop and is not compatible with the
        initial value before the loop.
        * tree-chrec.h (no_evolution_in_loop_p): Call STRIP_NOPS.

2009-10-21  Joseph Myers  <joseph@codesourcery.com>

        * config/sh/sh.c (nonpic_symbol_mentioned_p): Allow UNSPEC_TPOFF.

2009-10-21  Jakub Jelinek  <jakub@redhat.com>

        PR other/25507
        * doc/invoke.texi: Document -print-multi-os-directory.

2009-10-21  Jack Howarth  <howarth@bromo.med.uc.edu>

        PR c++/41313
        * gcc/config/darwin10.h: Use default_emit_unwind_label.
        * gcc/config/darwin.c: Disable -freorder-blocks-and-partition
        when darwin_emit_unwind_label is used.

2009-10-21  Eric Botcazou  <ebotcazou@adacore.com>

        * tree-vect-stmts.c (exist_non_indexing_operands_for_use_p): Tweak
        order of checks.

2009-10-20  Richard Henderson  <rth@redhat.com>

        * tree-eh.c (lower_try_finally_copy): Do lower_eh_constructs_1
        before emit_post_landing_pad.

2009-10-20  Adam Nemet  <anemet@caviumnetworks.com>

        * config/mips/mips.c (mips_binary_cost): Add new argument speed.
        Use when calling rtx_costs.
        (mips_rtx_costs): Fix formatting.  Use argument speed rather than the
        global optimize_size.  Pass speed to mips_binary_cost.

2009-10-20  Jakub Jelinek  <jakub@redhat.com>

        * config/rs6000/rs6000.c (def_builtin): Set TREE_READONLY instead
        of TREE_CONSTANT.

2009-10-20  Richard Sandiford  <rdsandiford@googlemail.com>

        * rtl.h (simplify_replace_fn_rtx): Declare.
        (wrap_constant, unwrap_constant): Delete.
        * cfgexpand.c (unwrap_constant, wrap_constant): Delete.
        (expand_debug_expr): Don't call wrap_constant.
        * combine.c (rtx_subst_pair): Only define for AUTO_INC_DEC.
        (auto_adjust_pair): Fold into...
        (propagate_for_debug_subst): ...here.  Only define for AUTO_INC_DEC.
        Just return a new value.
        (propagate_for_debug): Use simplify_replace_fn_rtx for AUTO_INC_DEC,
        otherwise use simplify_replace_rtx.
        * cselib.c (wrap_constant): Reinstate old definition.
        (cselib_expand_value_rtx_1): Don't wrap constants.
        * gcse.c (try_replace_reg): Don't use copy_rtx in the call to
        simplify_replace_rtx.
        (bypass_block): Fix formatting in calls to simplify_replace_rtx.
        * reload1.c (reload): Skip all uses for an insn before adjusting it.
        Use simplify_replace_rtx.
        * simplify-rtx.c (simplify_replace_fn_rtx): New function,
        adapted from...
        (simplify_replace_rtx): ...here.  Turn into a wrapper for
        simplify_replace_fn_rtx.
        (simplify_unary_operation): Don't unwrap CONSTs.
        * var-tracking.c (check_wrap_constant): Delete.
        (vt_expand_loc_callback): Don't call it.
        (vt_expand_loc): Likewise.

2009-10-20  Pascal Obry  <obry@adacore.com>
            Eric Botcazou  <ebotcazou@adacore.com>

        * config/i386/cygming.h (DWARF_FRAME_REGNUM): Add enclosing parens.

2009-10-20  Michael Matz  <matz@suse.de>

        * loop-invariant.c (create_new_invariant): Use different magic number.

2009-10-20  Richard Earnshaw  <rearnsha@arm.com>

        PR target/39247
        * arm.c (arm_override_options): Forcibly disable hot/cold block
        partitioning.

2009-10-20  Alexandre Oliva  <aoliva@redhat.com>

        PR debug/41739
        * haifa-sched.c (try_ready): Skip debug deps updating speculation
        status.

2009-10-20  Richard Guenther  <rguenther@suse.de>

        * ggc-page.c: Include cfgloop.h.
        (struct max_alignment): Drop long double, add void *.
        (extra_order_size_table): Add low non-power-of-two multiples
        of MAX_ALIGNMENT.  Drop small type-based entries, add
        tree_type, cgraph_node and loop.
        * alloc-pool.c (struct allocation_object_def): Drop long double
        aligning element.

2009-10-20  Jakub Jelinek  <jakub@redhat.com>

        PR debug/41340
        * loop-invariant.c (calculate_loop_reg_pressure): Don't count regs
        referenced just in DEBUG_INSNs.

2009-10-20  Richard Guenther  <rguenther@suse.de>

        PR lto/41761
        * gimple.c (gimple_register_type): Make sure we register
        the types main variant first.

2009-10-20  Richard Guenther  <rguenther@suse.de>

        * gimple.c (gimple_types_compatible_p): Simplify.  Move
        cheap checks before hashtable queries.  Add checks for
        TYPE_NONALIASED_COMPONENT and DECL_NONADDRESSABLE_P.

2009-10-20  Eric Botcazou  <ebotcazou@adacore.com>

        * tree-sra.c (build_ref_for_offset_1) <RECORD_TYPE>: Skip fields
        without size or with size that can't be represented as a host integer.

2009-10-20  Alexandre Oliva  <aoliva@redhat.com>

        * tree-ssa-dce.c (eliminate_unnecessary_stmts): Don't regard
        the removal of a debug stmt as a significant change.

2009-10-20  Wolfgang Gellerich  <gellerich@de.ibm.com>

        * config/s390/s390.md: Added agen condition to operand
        forwarding bypasses.  Added bypass for early address generation
        use of int results.  Updated comments.

2009-10-20  Stefan Dösinger  <stefan@codeweavers.com>

        * config/i386/i386.c: Remove signal.h #include.

2009-10-20  Jie Zhang  <jie.zhang@analog.com>

        * simplify-rtx.c (simplify_const_unary_operation): Handle SS_ABS.
        * doc/rtl.texi: Document ss_abs.

2009-10-19  Jakub Jelinek  <jakub@redhat.com>

        * c-common.c (c_parse_error): Handle CPP_UTF8STRING.
        * c-lex.c (c_lex_with_flags): Likewise.  Test C_LEX_STRING_NO_JOIN
        instead of C_LEX_RAW_STRINGS.
        (lex_string): Handle CPP_UTF8STRING.
        * c-parser.c (c_parser_postfix_expression): Likewise.
        * c-pragma.h (C_LEX_RAW_STRINGS): Rename to ...
        (C_LEX_STRING_NO_JOIN): ... this.

2009-10-19  Anatoly Sokolov  <aesok@post.ru>

        * config/cris/cris.c (cris_function_value, cris_libcall_value,
        cris_function_value_regno_p): New functions.
        (cris_promote_function_mode): Update comment.
        (TARGET_FUNCTION_VALUE, TARGET_LIBCALL_VALUE): Declare.
        * config/cris/cris.h (FUNCTION_VALUE, LIBCALL_VALUE): Remove.
        (FUNCTION_VALUE_REGNO_P): Redefine, use cris_function_value_regno_p.
        * config/cris/cris-protos.h (cris_function_value_regno_p): Declare.

2009-10-19  Jakub Jelinek  <jakub@redhat.com>

        * unwind-dw2.c (execute_stack_op): Fix operand order for
        DW_OP_le, DW_OP_ge, DW_OP_lt and DW_OP_gt.

2009-10-19  Eric Botcazou  <ebotcazou@adacore.com>

        * gimple-low.c (struct lower_data): Add cannot_fallthru field.
        (lower_stmt) <GIMPLE_BIND>: Add comment.
        <GIMPLE_COND, GIMPLE_GOTO, GIMPLE_SWITCH>: Set cannot_fallthru to true
        and return.
        <GIMPLE_RETURN>: Remove the statement if cannot_fallthru is set.
        Otherwise lower it and set cannot_fallthru to true.
        <GIMPLE_TRY>: Update cannot_fallthru for GIMPLE_TRY_FINALLY and return.
        <GIMPLE_CATCH, GIMPLE_EH_FILTER>: Set cannot_fallthru to false.
        <GIMPLE_CALL>: Set cannot_fallthru to false for BUILT_IN_SETJMP and
        to true for a noreturn call.  Do not remove statements.
        <GIMPLE_OMP_PARALLEL, GIMPLE_OMP_TASK>: Set cannot_fallthru to false.
        Set cannot_fallthru to false on function exit.
        (gimple_stmt_may_fallthru) <GIMPLE_SWITCH>: Really return false.
        <GIMPLE_ASSIGN>: Remove.

2009-10-19  Andreas Krebbel  <Andreas.Krebbel@de.ibm.com>

        * config/s390/s390.c (s390_z10_optimize_cmp): Don't touch FP compares.

2009-10-19  Andreas Krebbel  <Andreas.Krebbel@de.ibm.com>

        * config/s390/s390.c (s390_z10_optimize_cmp): Use
        next/prev_active_insn to skip DEBUG_INSNs as well.

2009-10-19  Joseph Myers  <joseph@codesourcery.com>

        * config/arm/arm.c (output_move_neon): Use DImode in call to
        adjust_address.

2009-10-19  Matthias Klose  <doko@ubuntu.com>

        PR target/40134
        * config.gcc (arm*-*-linux-*eabi): Use config/t-slibgcc-libgcc.

2009-10-19  Jakub Jelinek  <jakub@redhat.com>

        * cfgexpand.c (expand_debug_expr): Fail if bitpos < 0 for non-MEM op0.

2009-10-17  Andy Hutchinson  <hutchinsonandy@gcc.gnu.org>

        PR middle-end/41738
        * optabs.c (expand_binop): Make mode of shift count expression mode
        of shift count not target.
        Remove indent nit.

2009-10-17  Eric Botcazou  <ebotcazou@adacore.com>

        * tree-nested.c (convert_nonlocal_reference_stmt) <GIMPLE_COND>: New
        case.  Force using values to replace references within the statement.
        (convert_local_reference_stmt): Likewise.

2009-10-17  Eric Botcazou  <ebotcazou@adacore.com>

        * gimple-low.c (lower_stmt) <GIMPLE_CALL>: If the call is noreturn,
        remove a subsequent GOTO or RETURN statement.

2009-10-17  Andy Hutchinson  <hutchinsonandy@aim.com>

        * config/avr.md (*movqi): Add zero as equally preferable constraint
        as general register.
        (*movhi): Ditto.

2009-10-17  Eric Botcazou  <ebotcazou@adacore.com>

        * print-tree.c (print_node): Fix string for DECL_STRUCT_FUNCTION.

2009-10-17  Richard Guenther  <rguenther@suse.de>

        * lto-streamer-in.c (lto_input_location): Try to reuse previous maps.

2009-10-17  Richard Guenther  <rguenther@suse.de>

        * lto-streamer-in.c (input_gimple_stmt): Fixup FIELD_DECL
        operands in COMPONENT_REFs.

2009-10-17  Anatoly Sokolov  <aesok@post.ru>

        * targhooks.c (default_libcall_value): Don't use LIBCALL_VALUE macro
        if not defined. Change type of second argument to const_rtx.
        (default_function_value): Call gcc_unreachable if FUNCTION_VALUE
        macro not defined.
        * targhooks.h (default_libcall_value): Update prototype.
        * target.h (struct gcc_target): Change type of second argument of
        libcall_value to const_rtx.
        * config/arm/arm.c (arm_libcall_value): Change type of second argument
        to const_rtx.
        (arm_libcall_uses_aapcs_base): Change type of argument to const_rtx.
        * doc/tm.texi (TARGET_LIBCALL_VALUE):  Revise documentation.

2009-10-17  Jakub Jelinek  <jakub@redhat.com>

        PR debug/40521
        * debug.h (struct gcc_debug_hooks): Add assembly_start hook.
        * cgraphunit.c (cgraph_optimize): Call it.
        * dwarf2out.c (dwarf2out_init): Move .cfi_sections printing into...
        (dwarf2out_assembly_start): ... here.  New hook.
        (dwarf2out_debug_hooks): Add dwarf2out_assembly_start.
        * debug.c (do_nothing_debug_hooks): Do nothing for assembly_start
        hook.
        * dbxout.c (dbx_debug_hooks, xcoff_debug_hooks): Likewise.
        * sdbout.c (sdb_debug_hooks): Likewise.
        * vmsdbgout.c (vmsdbg_debug_hooks): Add vmsdbgout_assembly_start.
        (vmsdbgout_assembly_start): New hook.

2009-10-17  Alexandre Oliva  <aoliva@redhat.com>

        * rtl.h (RTL_LOCATION): Fix typo.

2009-10-17  Alexandre Oliva  <aoliva@redhat.com>

        * print-rtl.c (print_rtx): Print locators in asm_operands
        and asm_input.

2009-10-17  Alexandre Oliva  <aoliva@redhat.com>

        PR debug/41535
        * sched-deps.c (depl_on_debug_p): New.
        (attach_dep_link): Reject debug deps before nondebug deps.
        (add_to_deps_list): Insert debug deps after nondebug deps.
        (sd_lists_empty_p): Stop at first nonempty list.  Disregard debug
        deps.
        (sd_add_dep): Do not reject debug deps.
        (add_insn_mem_dependence): Don't count debug deps.
        (remove_from_deps): Likewise.
        (sched_analyze_2): Set up mem deps on debug insns.
        (sched_analyze_insn): Record reg uses for deps on debug insns.
        * haifa-sched.c (schedule_insn): Reset deferred debug insn.  Don't
        try_ready nondebug insn after debug insn.
        * ddg.c (create_ddg_dep_from_intra_loop_link,
        create_ddg_dep_no_link): Don't reject debug deps.

2009-10-16  Richard Guenther  <rguenther@suse.de>

        * lto-symtab.c (merge_incomplete_and_complete_type): Remove.
        (maybe_merge_incomplete_and_complete_type): Likewise.
        (lto_symtab_merge): Do not call them.  Do not warn for
        complete vs. incomplete compatible types.
        (lto_symtab_merge_decls_2): Simplify.
        * gimple.c (gimple_force_type_merge): Remove.
        (gimple_types_compatible_p): Make it static.
        * gimple.h (gimple_force_type_merge): Remove.
        (gimple_types_compatible_p): Likewise.

2009-10-16  Jakub Jelinek  <jakub@redhat.com>

        * dwarf2out.c (mem_loc_descriptor) <case ZERO_EXTRACT>: Cast
        DWARF2_ADDR_SIZE to int to avoid signed vs. unsigned warnings.

2009-10-16  Richard Guenther  <rguenther@suse.de>

        PR tree-optimization/41728
        * tree-ssa-dom.c (optimize_stmt): Mark the stmt modified
        if fold_stmt did anything.

2009-10-16  Richard Guenther  <rguenther@suse.de>

        PR lto/41715
        * lto-streamer-in.c (lto_input_tree_ref): Revert last change.
        (maybe_fixup_handled_component): New function.
        (input_gimple_stmt): Fixup mismatched decl replacements.

2009-10-16  Richard Guenther  <rguenther@suse.de>

        PR lto/41713
        * lto-streamer-out.c (lto_output_tree_ref): Handle DEBUG_EXPR_DECL
        the same as VAR_DECL.

2009-10-16  Richard Guenther  <rguenther@suse.de>

        * gimple.c (iterative_hash_gimple_type): For integer types
        also hash their minimum and maximum values and the string flag.
        For array types hash their domain and the string flag.

2009-10-16  Richard Guenther  <rguenther@suse.de>

        * gimple.c (gimple_types_compatible_p): Restrict completing
        types to record or unions.  Simplify completion.
        Do not merge records or unions with different
        TYPE_STRUCTURAL_EQUALITY_P tag.
        (iterative_hash_gimple_type): Restrict non-recursing into
        pointer targets for records and unions.

2009-10-15  Jakub Jelinek  <jakub@redhat.com>

        PR debug/41717
        * cfgexpand.c (expand_debug_expr): Handle CONJ_EXPR.
        * dwarf2out.c (mem_loc_descriptor): Don't handle
        POST_INT/POST_DEC/POST_MODIFY like SUBREG.  For SUBREG
        punt if it is not lowpart subreg or if inner mode isn't
        MODE_INT.

2009-10-16  Andreas Krebbel  <Andreas.Krebbel@de.ibm.com>

        * config/s390/s390.c (s390_z10_optimize_cmp): Skip notes when
        investigating previous or next insns.

2009-10-16  Eric Botcazou  <ebotcazou@adacore.com>

        * tree-sra.c (build_ref_for_offset_1): Update comment.

2009-10-16  Wolfgang Gellerich  <gellerich@de.ibm.com>

        * config/s390/s390.md (atype): Added missing values.

2009-10-15  John David Anglin  <dave.anglin@nrc-cnrc.gc.ca>

        PR target/41702
        * pa.md (casesi): Use sign extended index in call to gen_casesi64p.
        (casesi64p): Update pattern to reflect above.

2009-10-15  Steve Ellcey  <sje@cup.hp.com>

        PR rtl-optimization/41697
        * sel-sched-ir.h (_eligible_successor_edge_p): Check successor count.

2009-10-15  Michael Meissner  <meissner@linux.vnet.ibm.com>

        PR target/23983
        * config/rs6000/predicates.md: Update copyright year.
        * config/rs6000/altivec.md: Ditto.

        * config/rs6000/t-rs6000 (TM_H): Add rs6000-builtin.def.
        (MD_INCLUDES): Add a2.md.

        * config/rs6000/rs6000.c (rs6000_builtin_decls): Change
        RS6000_BUILTIN_COUNT to MAX_RS6000_BUILTINS.
        (builtin_classify): New static vector to classify various builtins
        to get the tree attributes correct.
        (def_builtin): Set the attributes of builtins based on what the
        builtin does (i.e. memory operation, floating point, saturation
        need special attributes, others are pure functions).

        * config/rs6000/rs6000.h (enum rs6000_btc): New enum to classify
        the builtins.
        (enum rs6000_builtins): Include rs6000-builtin.def to define the
        builtins.  Change the end marker to MAX_RS6000_BUILTINS from
        RS6000_BUILTIN_COUNT.
        (rs6000_builtin_decls): Change RS6000_BUILTIN_COUNT to
        MAX_RS6000_BUILTINS.

        * config/rs6000/rs6000-builtin.def: New file that combines the
        builtin enumeration name and attributes.

2009-10-15  H.J. Lu  <hongjiu.lu@intel.com>

        * config/i386/linux.h (ASM_SPEC): Add --32.

2009-10-15  Jakub Jelinek  <jakub@redhat.com>

        * dwarf2out.c (dwarf_tag_name): Handle DW_TAG_rvalue_reference_type
        and DW_TAG_template_alias.
        (dwarf_attr_name): Handle DW_AT_main_subprogram,
        DW_AT_data_bit_offset, DW_AT_const_expr, DW_AT_enum_class,
        DW_AT_linkage_name, DW_AT_GNU_guarded_by, DW_AT_GNU_pt_guarded_by,
        DW_AT_GNU_guarded, DW_AT_GNU_pt_guarded, DW_AT_GNU_locks_excluded,
        DW_AT_GNU_exclusive_locks_required, DW_AT_GNU_shared_locks_required
        and DW_AT_GNU_odr_signature.
        (dwarf_form_name): Handle DW_FORM_sec_offset, DW_FORM_exprloc,
        DW_FORM_flag_present and DW_FORM_ref_sig8.
        (output_signature): Only print name on the first byte.
        (output_die): Likewise for dw_val_class_data8.

2009-10-15  Alexander Monakov  <amonakov@ispras.ru>

        * doc/invoke.texi: Clarify that most optimizations are not enabled
        without -O.

2009-10-15  Richard Guenther  <rguenther@suse.de>

        PR lto/41668
        * gimple.c (compare_type_names_p): Handle anonymous names
        differently based on new mode argument.
        (gimple_types_compatible_p): For structs also compare the tags.
        (iterative_hash_type_name): Rename to ...
        (iterative_hash_name): ... this.  Hash all names.
        (iterative_hash_gimple_type): Fix hashing the struct tag of
        pointer targets.  Hash field decl names.

2009-10-15  Richard Guenther  <rguenther@suse.de>

        PR lto/41669
        * gimple.c (gimple_get_alias_set): Avoid recursing on
        invalid type topology.

2009-10-15  Andrew Pinski  <andrew_pinski@playstation.sony.com>

        * config/spu/spu.c (get_branch_target): Use extract_asm_operands.

2009-10-15  Richard Guenther  <rguenther@suse.de>

        * tree.c (free_lang_data_in_decl): Free DECL_FCONTEXT.

2009-10-15  Jakub Jelinek  <jakub@redhat.com>

        * config/rs6000/option-defaults.h (OPTION_DEFAULT_SPECS): Don't
        add --with-tune{,-32,-64} configured default for -mtune if explicit
        -mcpu is used.

2009-10-14  Daniel Gutson  <dgutson@codesourcery.com>

        * config/arm/neon.md (neon_vshll_n<mode>): Checking Bounds fixed.

2009-10-14  DJ Delorie  <dj@redhat.com>

        * config/h8300/h8300.c (F): New.
        (Fpa): New.
        (h8300_emit_stack_adjustment): Call them.
        (push): Likewise.
        (h8300_push_pop): Likewise.
        (h8300_expand_prologue): Likewise.
        * config/h8300/h8300.h (DWARF2_DEBUGGING_INFO): Define.
        (MUST_USE_SJLJ_EXCEPTIONS): Define.
        (INCOMING_RETURN_ADDR_RTX): Define.
        (INCOMING_FRAME_SP_OFFSET): Define.
        (DWARF_CIE_DATA_ALIGNMENT): Define.

2009-10-14  Jakub Jelinek  <jakub@redhat.com>

        * stor-layout.c (place_field): Don't emit -Wpadded warnings for
        fields in builtin structs.
        (finalize_record_size): Likewise.

2009-10-14  Richard Guenther  <rguenther@suse.de>

        * gimple.c (gtc_ob): New global.
        (struct type_pair_d): Replace pointers with type UIDs.
        (type_pair_hash): Adjust.
        (type_pair_eq): Likewise.
        (lookup_type_pair): Likewise.  Allocate from an obstack.
        (gimple_force_type_merge): Adjust.
        (gimple_types_compatible_p): Likewise.
        (free_gimple_type_tables): Free the obstack.

2009-10-14  Jakub Jelinek  <jakub@redhat.com>

        * tree-parloops.c (separate_decls_in_region_debug_bind): Drop debug
        stmts setting DEBUG_EXPR_DECLs.

        * cfgexpand.c (expand_debug_expr): Ignore zero-length bitfields.
        Don't crash if mode1 is VOIDmode.

2009-09-26  Vladimir Makarov  <vmakarov@redhat.com>

        * params.def (PARAM_IRA_LOOP_RESERVED_REGS): New.
        * params.h (IRA_LOOP_RESERVED_REGS): New.
        * tree-pass.h (pass_subregs_of_mode_init,
        pass_subregs_of_mode_finish): Remove.
        * passes.c (pass_subregs_of_mode_init,
        pass_subregs_of_mode_finish): Remove.
        (pass_reginfo_init): Move before loop optimizations.
        * config/i386/i386.h (STACK_REG_COVER_CLASS): Define.
        * common.opt (fira-loop-pressure): New.
        * toplev.h (flag_ira_loop_pressure): New.
        * rtl.h (init_subregs_of_mode, finish_subregs_of_mode): New externals.
        * reginfo.c (init_subregs_of_mode, finish_subregs_of_mode):
        Make external and void type functions.
        (gate_subregs_of_mode_init, pass_subregs_of_mode_init,
        pass_subregs_of_mode_finish): Remove.
        * ira-costs.c (init_costs): Call init_subregs_of_mode.
        * regmove.c: Include ira.h.
        (regmove_optimize): Call ira_set_pseudo_classes after IRA based
        register pressure calculation in loops.
        * loop-invariant.c: Include REGS_H and ira.h.
        (struct loop_data): New members max_reg_pressure, regs_ref, and
        regs_live.
        (struct invariant): New member orig_regno.
        (curr_loop): New variable.
        (find_exits): Initialize regs_ref and regs_live.
        (create_new_invariant): Initialize orig_regno.
        (get_cover_class_and_nregs): New.
        (get_inv_cost): Make aregs_needed an array.  Use regs_needed as an
        array.  Add code for flag_ira_loop_pressure.
        (gain_for_invariant): Make new_regs an array.  Add code for
        flag_ira_loop_pressure.
        (best_gain_for_invariant): Ditto.
        (set_move_mark): New parameter gain.  Use it for debugging output.
        (find_invariants_to_move): Make regs_needed and new_regs an array.
        Add code for flag_ira_loop_pressure.
        (move_invariant_reg): Set up orig_regno.
        (move_invariants): Set up reg classes for pseudos for
        flag_ira_loop_pressure.
        (free_loop_data): Clear regs_ref and regs_live.
        (curr_regs_live, curr_reg_pressure, regs_set, n_regs_set,
        get_regno_cover_class, change_pressure, mark_regno_live,
        mark_regno_death, mark_reg_store, mark_reg_clobber,
        mark_reg_death, mark_ref_regs, calculate_loop_reg_pressure): New.
        (move_loop_invariants): Calculate pressure.  Initialize curr_loop.
        * ira.c (ira): Call ira_set_pseudo_classes after IRA based
        register pressure calculation in loops if new regs were added.
        Call finish_subregs_of_mode.
        * opts.c (decode_options): Set up flag_ira_loop_pressure.
        * Makefile.in (loop-invariant.o): Add ira.h.
        (regmove.o): Ditto.
        * doc/invoke.texi (-fira-loop-pressure, ira-loop-reserved-regs):
        Describe.
        * doc/tm.texi (STACK_REG_COVER_CLASS): Describe.

2009-10-14  Richard Guenther  <rguenther@suse.de>

        * lto-symtab.c (lto_symtab_compatible): Fold in ...
        (lto_symtab_merge): ... here.  Rewrite both to take the
        prevailing and a to-be-merged entry and to queue diagnostics properly.
        (lto_symtab_resolve_replaceable_p): New predicate for
        symbol resolution.
        (lto_symtab_resolve_can_prevail_p): Likewise.
        (lto_symtab_resolve_symbols): Rewrite.  Fold in code that
        handles merging commons by choosing the largest decl.  Fold
        in code that gives ODR errors.
        (lto_symtab_merge_decls_2): Simplify a lot.  Emit queued
        diagnostics here.
        (lto_symtab_merge_decls_1): Re-structure.  Deal with the
        case of no prevailing decl here.  Diagnose mismatches
        in object types here.  Drop all but the prevailing decls.
        (lto_symtab_prevailing_decl): Return the single prevailing decl.
        * lto-streamer-in.c (lto_input_tree_ref): Deal with
        VIEW_CONVERT_EXPRs in decl slots.  Unshare the tree in this case.

2009-10-14  Richard Guenther  <rguenther@suse.de>

        PR lto/41521
        * lto-streamer-in.c (input_bb): Replace debug stmts with
        nops instead of dropping them.

2009-10-14  Nick Clifton  <nickc@redhat.com>

        * gcc/doc/extended.texi: Replace the dash character with @minus{}
        in situations where it is being used as a minus symbol.
        * gcc/doc/tm.texi: Likewise.
        * gcc/doc/md.texi: Likewise.

2009-10-14  Jakub Jelinek  <jakub@redhat.com>

        PR preprocessor/41543
        * input.h (BUILTINS_LOCATION): Change to 1 from 2.
        Assert BUILTINS_LOCATION < RESERVED_LOCATION_COUNT.
        * tree.c: Include intl.h.
        (expand_location): Handle BUILTINS_LOCATION.
        * Makefile.in (tree.o): Depend on intl.h.

        PR debug/41695
        * dwarf2out.c (dwarf2out_var_location): Always clear
        last_postcall_label when changing last_label.

2009-10-14  Pascal Obry  <obry@adacore.com>

        * gcc.c (DEFAULT_SWITCH_CURTAILS_COMPILATION): Add -E.
        (process_command): Handle -E as done with -c and -S.  Do not add
        the target executable suffix to the output file when -E is used.
        (main): Adjust error message accordingly.

2009-10-14  Alexandre Oliva  <aoliva@redhat.com>

        PR debug/41343
        PR debug/41447
        PR debug/41264
        PR debug/41338
        * tree.c (tree_node_structure_for_code): DEBUG_EXPR_DECL uses
        decl with rtl.
        (tree_code_size): Likewise.

2009-10-13  Kaveh R. Ghazi  <ghazi@caip.rutgers.edu>

        * builtins.c (fold_builtin_1): Support complex "arc" functions.
        * real.h (HAVE_mpc_arc): Define.

2009-10-14  Kaz Kojima  <kkojima@gcc.gnu.org>

        * config/sh/sh.c (TARGET_BUILTIN_DECL): Define.
        (struct builtin_description): Add fndecl field.
        (bdesc): Remove const qualifier.  Update initializer.
        (sh_media_init_builtins): Remove const qualifier for d.  Record
        the result of add_builtin_function to the fndecl field.
        (sh_builtin_decl): New.
        (sh_media_builtin_decl): New.

2009-10-14  Hans-Peter Nilsson  <hp@axis.com>

        PR target/38948
        * config/cris/cris.h (SECONDARY_RELOAD_CLASS): Handle reload
        requests between special registers.

2009-10-13  Eric Botcazou  <ebotcazou@adacore.com>

        * dwarf2out.c (mem_loc_descriptor): Accept UNGT as well.

2009-10-13  Richard Henderson  <rth@redhat.com>

        PR tree-optimization/41377
        * tree-eh.c (unsplit_eh): Propagate degenerate PHIs.
        (cleanup_empty_eh_merge_phis): New change_region parameter;
        pass it on to redirect_eh_edge_1.  Update callers.
        (cleanup_empty_eh_unsplit): Don't require an existing EH label
        at the destination block.

2009-10-13  Basile Starynkevitch  <basile@starynkevitch.net>

        * passes.c (register_pass): Replaced gcc_unreachable by
        fatal_error on failure. Mentions plugins in comments & messages.

2009-10-13  Jakub Jelinek  <jakub@redhat.com>

        PR target/41693
        * rtl.h (DEBUG_EXPR_TREE_DECL): Define.
        * sched-vis.c (print_value): Use it.
        * cselib.c (cselib_hash_rtx): Likewise.
        * print-rtl.c (print_rtx): Likewise.
        * cfgexpand.c (expand_debug_rtx): Likewise.
        * var-tracking.c (vt_expand_loc_callback): Likewise.

2009-10-13  Richard Guenther  <rguenther@suse.de>

        PR lto/41565
        * opts.c (handle_option): Split out code to handle setting
        the options flag var ...
        (set_option): ... here.
        * opts.h (set_option): Declare.
        * lto-opts.c (register_user_option_p): Include -fexceptions
        and all position independent code variants.
        (handle_common_option): Remove.
        (lto_reissue_options): Use set_option.

2009-10-13  Martin Jambor  <mjambor@suse.cz>

        PR tree-optimization/41661
        * ipa-prop.c (compute_complex_pass_through): Allow only operations
        that are tcc_comparisons or do not change the type in any
        un-usleless way.
        * ipa-cp.c (ipcp_lattice_from_jfunc): Request boolean type when
        folding tcc_comparison operations.

2009-10-13  Andreas Krebbel  <Andreas.Krebbel@de.ibm.com>

        * config/s390/s390.c (s390_encode_section_info): Handle BLKmode
        properly.

2009-10-12  Alexandre Oliva  <aoliva@redhat.com>

        PR debug/41343
        PR debug/41447
        PR debug/41264
        PR debug/41338
        * tree.def (DEBUG_EXPR_DECL): New.
        * rtl.def (DEBUG_EXPR): New.
        * gengtype.c (adjust_field_rtx_def): Handle it.
        * tree-ssa.c (propagate_var_def_into_debug_stmts): Rename to...
        (insert_debug_temp_for_var_def): ... this.  Drop support for
        moving.  Take iterator for def stmt; insert debug stmt before it.
        Scan early for use count and kind in debug stmts.
        (propagate_defs_into_debug_stmts): Rename to...
        (insert_debug_temps_for_defs): ... this.  Likewise.
        * tree.h (DEBUG_TEMP_UID): New.
        * tree.c (next_debug_decl_uid): New.
        (make_node_stat): Count debug decls separately.
        (copy_node_stat): Likewise.
        * cfgexpand.c (expand_debug_expr): Handle DEBUG_EXPR_DECL.
        * var-tracking.c (dv_is_decl_p): Recognize it.
        (VALUE_RECURSED_INTO): Apply to DEBUG_EXPRs too.
        (track_expr_p): Track expanded DEBUG_EXPR_DECLs.
        (vt_expand_loc_callback): Expand DEBUG_EXPRs.
        (emit_note_insn_var_location): Don't emit notes for DEBUG_EXPR_DECLs.
        * cselib.c (rtx_equal_for_cselib_p): Handle DEBUG_EXPR.
        (cselib_hash_rtx): Likewise.
        (cselib_expand_value_rtx_1): Use callback for DEBUG_EXPR.
        * tree-ssa-operands.c (get_expr_operands): Skip DEBUG_EXPR_DECLs in
        debug bind stmts.
        * emit-rtl.c (verify_rtx_sharing): Handle DEBUG_EXPR and VALUE.
        (copy_rtx_if_shared_1, reset_used_flags, set_used_flags): Likewise.
        * rtl.c (copy_rtx): Likewise.
        (rtx_equal_p_cb, rtx_equal_p): Handle DEBUG_EXPR.
        * print-rtl.c (print_rtx): Likewise.
        * sched-vis.c (print_value): Likewise.
        (print_insn): Handle DEBUG_EXPR_DECL.
        * tree-dump.c (dequeue_and_dump): Likewise.
        * tree-pretty-print.c (dump_decl_name, dump_generic_node): Likewise.
        * gimple-iterator (gsi_replace): Check for same lhs.
        (gsi_remove): Insert debug temps.
        * tree-ssa-loop-im.c (rewrite_reciprocal): Replace with same lhs.
        (move_computations_stmt): Drop explicit propagation into debug stmts.
        (rewrite_bittest): Likewise.  Use gsi_remove for propagation.
        * tree-ssa-reassoc.c (rewrite_expr_tree, linearize_expr): Likewise.
        * tree-ssa-sink.c (statement_sink_location): Likewise.
        * tree-ssa-forwprop (forward_propagate_addr_expr): Likewise.
        * tree-ssanames.c (release_ssa_name): Adjust for rename.
        * tree-flow.h: Likewise.
        * tree-ssa-dce.c (mark_stmt_if_obviously_necessary): Don't mark
        debug temps without values.
        (eliminate_unnecessary_stmts): Don't discard just-inserted
        debug stmts.

2009-10-12  Hans-Peter Nilsson  <hp@axis.com>

        PR target/26515
        * config/cris/cris.md (andu): Check that operand 1 is one of the
        general registers.  Fix typo in head comment.

2009-10-12  Stefan Dösinger  <stefan@codeweavers.com>

        * config/i386/i386.md (vswapmov): New.
        * config/i386/i386.c (ix86_handle_fndecl_attribute): New.
        (ix86_function_ms_hook_prologue): New.
        (ix86_expand_prologue): Handle ms_hook_prologue attribute.
        * configure.ac: Test for swap suffix support in as.
        * configure: Rebuild.

2009-10-12  Jakub Jelinek  <jakub@redhat.com>

        PR target/41680
        * config/i386/i386.md (split after *testqi_ext_3_rex64): Only narrow
        paradoxical subregs to prevent partial register stalls if the inner
        mode is integer mode.

2009-10-12  Uros Bizjak  <ubizjak@gmail.com>

        * config/i386/i386.md (*setcc_<mode>_2): Remove insn pattern.

2009-10-12  Dodji Seketeli  <dodji@redhat.com>

        PR c++/41570
        * gcc/dwarf2out.c (template_parameter_pack_die,
        gen_formal_parameter_pack_die): Use add_name_and_src_coords_attributes.

2009-10-12  Alexandre Oliva  <aoliva@redhat.com>

        PR debug/41616
        * tree-into-ssa.c (insert_phi_nodes_for): Build debug bind stmts
        on updates too.
        (maybe_register_def): Likewise.  Take stmt iterator.
        (rewrite_update_stmt): Take stmt iterator and pass it on.
        (rewrite_update_enter_block): Pass stmt iterator.

2009-10-11  Andrew Pinski  <andrew_pinski@playstation.sony.com>

        * config/spu/spu.c (TARGET_BUILTIN_DECL): Define.
        (spu_builtin_decl): New function.

2009-10-12  Uros Bizjak  <ubizjak@gmail.com>

        * config/i386/i386.md (SWIM): New mode iterator.
        (mov<mode>cc): Macroize expander from mov{qi,hi,si,di}cc patterns
        using SWIM mode iterator.
        (x86_mov<mode>cc_0_m1): Macroize insn from x86_mov{si,di}cc_0_m1
        patterns using SWI48 mode iterator.
        (*x86_mov<mode>cc_0_m1_se):  Macroize insn from
        *x86_mov{si,di}cc_0_m1_se patterns using SWI48 mode iterator.
        (*x86_mov<mode>cc_0_m1_neg): New insn pattern.
        (*mov<mode>cc_noc): Macroize insn from *mov{hi,si,di}cc_noc
        patterns using SWI248 mode iterator.
        * config/i386/i386.c (ix86_expand_int_movcc): Update the call to
        gen_x86_movdicc_0_m1_rex64 for renamed function

2009-10-11  Jose Ruiz  <ruiz@adacore.com>
            Eric Botcazou  <ebotcazou@adacore.com>

        PR target/33743
        * config/sparc/sol2.h (MD_UNWIND_SUPPORT): Define.
        * config/sparc/sol2-unwind.h: New file.

2009-10-11  Olivier Hainque  <hainque@adacore.com>
            Eric Botcazou  <ebotcazou@adacore.com>

        PR target/33743
        * config/i386/sol2.h (MD_UNWIND_SUPPORT): Define.
        * config/i386/sol2-unwind.h: New file.

2009-10-11  H.J. Lu  <hongjiu.lu@intel.com>

        PR target/41665
        * config/i386/i386.md (addsi_1_zext): Get the proper second
        operand for lea.

2009-10-11  Richard Sandiford  <rdsandiford@googlemail.com>

        * simplify-rtx.c (simplify_replace_rtx): Use rtx_equal_p for
        all OLD_RTXes, not just REGs.  Use copy_rtx to create the
        replacement value.

2009-10-11  Richard Guenther  <rguenther@suse.de>

        * gimple.c (iterative_hash_type_name): Do not handle special
        anonymous names.

2009-10-11  Uros Bizjak  <ubizjak@gmail.com>

        * config/i386/i386.md (*setcc_di_1): New insn_and_split pattern.
        (*setcc_si_1_and): Ditto.
        (*setcc_si_1_movzbl): Ditto.
        (*setcc_<mode>_2): Ditto.
        (*setcc_qi): Rename from *setcc_1.
        (*setcc_qi_slp): Rename from *setcc_2.

        (*zero_extendqihi2_movzbw_and splitter): Use ix86_expand_clear.
        (*zero_extendqisi2_movzbw_and splitter): Ditto.

        * config/i386/i386.c (ix86_expand_clear): Remove reload_completed from
        "if" condition, there is already assert with reload_completed present.

2009-10-11  Gerald Pfeifer  <gerald@pfeifer.com>

        * plugin.c (try_init_one_plugin): Improve constness of variable err.

2009-10-10  Gerald Pfeifer  <gerald@pfeifer.com>

        * doc/install.texi (Final install): Refer to
        http://gcc.gnu.org/bugs/ for bug reporting.

2009-10-10  Peter Bergner  <bergner@vnet.ibm.com>

        * configure.ac: Add test for dci instruction.
        * configure: Regenerate.
        * config.in: Likewise.
        * config.gcc: Handle --with-cpu=476 and --with-cpu=476fp.
        * doc/invoke.texi: Add cpu_type 476 and 476fp.
        (-mmulhw): Add 476 to description.
        (-mdlmzb): Likewise.
        * config/rs6000/t-fprules (MULTILIB_MATCHES_FLOAT): Include -mcpu=476.
        * config/rs6000/rs6000.c (processor_costs): Add ppc476_cost.
        (processor_target_table): Add 476 and 476fp entries.
        (rs6000_override_options): Use ppc476_cost for PROCESSOR_PPC476.
        (rs6000_issue_rate): Add CPU_PPC476.
        * config/rs6000/rs6000.h (ASM_CPU_476_SPEC): Define.
        (ASM_CPU_SPEC): Pass %(asm_cpu_476) for -mcpu=476 and -mcpu=476fp.
        (processor_type): Add PROCESSOR_PPC476.
        (EXTRA_SPECS): Add asm_cpu_476 string.
        * config/rs6000/rs6000.md (define_attr "type"): Add isel attribute.
        (define_attr "cpu"): Add ppc476.
        Include 476.md.
        Update comments for 476.
        (isel_signed, isel_unsigned): Change to use "isel" type attribute.
        * config/rs6000/vxworks.h (CPP_SPEC): Handle 464 and 476.
        Update copyright year.
        * config/rs6000/476.md: New file.
        * config/rs6000/40x.md: Add description for "isel" attribute.
        Update copyright year.
        * config/rs6000/440.md: Likewise.
        * config/rs6000/603.md: Likewise.
        * config/rs6000/6xx.md: Likewise.
        * config/rs6000/7450.md: Likewise.
        * config/rs6000/7xx.md: Likewise.
        * config/rs6000/8540.md: Likewise.
        * config/rs6000/cell.md: Likewise.
        * config/rs6000/e300c2c3.md: Likewise.
        * config/rs6000/e500mc.md: Likewise.
        * config/rs6000/mpc.md: Likewise.
        * config/rs6000/power4.md: Likewise.
        * config/rs6000/power5.md: Likewise.
        * config/rs6000/power6.md: Likewise.
        * config/rs6000/power7.md: Likewise.
        * config/rs6000/rios1.md: Likewise.
        * config/rs6000/rios2.md: Likewise.
        * config/rs6000/rs64.md: Likewise.

2009-10-10  Richard Guenther  <rguenther@suse.de>

        PR tree-optimization/41654
        * tree-ssa-ifcombine.c (ifcombine_ifandif): Properly canonicalize
        a cond expr before calling gimple_cond_set_condition_from_tree.
        (ifcombine_iforif): Likewise.

2009-10-09  Ian Lance Taylor  <iant@google.com>

        * configure.ac: Use AC_SEARCH_LIBS to find dlopen.
        * configure: Rebuild.

2009-10-09  Neil Vachharajani <nvachhar@google.com>

        * doc/cpp.texi (Other Directives): Do not list #ident and #sccs as
        deprecated.

2009-10-09  Richard Guenther  <rguenther@suse.de>

        PR lto/41638
        * target-def.h (TARGET_BUILTIN_DECL): Define.
        (TARGET_INITIALIZER): Add TARGET_BUILTIN_DECL.
        * target.h (struct gcc_target): Add builtin_decl target hook.
        * doc/tm.texi (TARGET_BUILTIN_DECL): Document.
        * lto-streamer-in.c (lto_get_builtin_tree): Fix handling of
        target builtins.
        * lto-streamer-out.c (lto_output_tree_pointers): Use sorry,
        not gcc_unreachable.
        (lto_output_builtin_tree): Sorry if the target does not support
        streaming target builtins.
        * config/rs6000/rs6000.c (TARGET_BUILTIN_DECL): Define.
        (rs6000_builtin_decl): New function.
        * config/i386/i386.c (TARGET_BUILTIN_DECL): Define.
        (ix86_builtin_decl): New function.

2009-10-09  Jakub Jelinek  <jakub@redhat.com>

        PR preprocessor/41445
        * c-ppoutput.c (do_line_change): New function.
        (cb_line_change): Use it.
        (scan_translation_unit): Call do_line_change if
        avoid_paste or PREV_WHITE and token location is on a different line
        than print.src_line.

        PR debug/40521
        * dwarf2out.c (dwarf2out_init): Test whether
        HAVE_GAS_CFI_SECTIONS_DIRECTIVE is non-zero instead of checking
        it is defined.

        PR rtl-optimization/41646
        * calls.c (expand_call): For BLKmode types returned in registers
        avoid likely spilled hard regs in copy_blkmode_from_reg generated
        insns.

2009-10-09  Richard Guenther  <rguenther@suse.de>

        PR tree-optimization/41634
        * tree-ssa-dom.c (remove_local_expressions_from_table): Assert
        we remove the correct elements.
        (optimize_stmt): Make sure to update stmt operands before
        optimizing redundancies.

2009-10-09  Andreas Krebbel  <Andreas.Krebbel@de.ibm.com>

        * config/s390/s390.md ("prefetch"): Remove stcmh for prefetching.

2009-10-09  Richard Guenther  <rguenther@suse.de>

        PR driver/41637
        * lto-wrapper.c (ltrans_output_file, flto_out, args_name): New
        globals.
        (lto_wrapper_exit): New function.
        (fatal): Use it.
        (fatal_perror): Likewise.
        (fork_execute): Use global args_name, do not free it.
        (run_gcc): Use global ltrans_output_file, flto_out, do not free them.
        * lto-streamer.h: Remove duplicate prototypes.

2009-10-09  Richard Guenther  <rguenther@suse.de>

        * cgraph.c (cgraph_create_edge): Check for NULL call_stmt
        before calling stmt_can_throw_external.

2009-10-09  Eric Botcazou  <ebotcazou@adacore.com>

        PR tree-optimization/40071
        * tree-vect-data-refs.c (vect_create_data_ref_ptr): Build a ref-all
        pointer if the original data reference doesn't conflict with the
        created vector data reference.  Fix long line.

2009-10-09  Uros Bizjak  <ubizjak@gmail.com>

        * config/i386/i386.md (any_div): New code iterator.
        (u): Handle div and udiv.
        (sgnprefix): Ditto.
        (<u>divqi3): Macroize insn from {,u}divqi3  using any_div
        code iterator.
        (lfloor<MODEF:mode><SWI48:mode>2): Macroize insn from
        lfloor<mode>{si,di}2 patterns using SWI48 mode iterator.
        (lceil<MODEF:mode><SWI48:mode>2): Macroize insn from
        lceil<mode>{si,di}2 patterns using SWI48 mode iterator.

2009-10-08  Joseph Myers  <joseph@codesourcery.com>

        * gcc.c (main): Remove trailing "." from diagnostics.

2009-10-08  Cary Coutant  <ccoutant@google.com>

        Add support for debugging with ICF (Identical Code Folding).
        * calls.c (debug.h): New #include.
        (emit_call_1): Call virtual_call_token debug hook.
        * common.opt (-fenable-icf-debug): New option.
        * dwarf2out.c (dwarf2_debug_hooks): Add entries for new hooks (two
        locations in the source).
        (poc_label_num): New variable.
        (dcall_entry, vcall_entry): New typedefs.
        (dcall_table, vcall_table): New variables.
        (struct vcall_insn): New type.
        (vcall_insn_table): New variable.
        (DEBUG_DCALL_SECTION, DEBUG_VCALL_SECTION): New macros.
        (size_of_dcall_table): New function.
        (output_dcall_table): New function.
        (size_of_vcall_table): New function.
        (output_vcall_table): New function.
        (dwarf2out_direct_call): New function.
        (vcall_insn_table_hash): New function.
        (vcall_insn_table_eq): New function.
        (dwarf2out_virtual_call_token): New function.
        (dwarf2out_virtual_call): New function.
        (dwarf2out_init): Allocate new tables and sections.
        (prune_unused_types): Mark DIEs referenced from direct call table.
        (dwarf2out_finish): Output direct and virtual call tables.
        * final.c (final_scan_insn): Call direct_call and virtual_call
        debug hooks.
        * debug.h (struct gcc_debug_hooks): Add direct_call,
        virtual_call_token, virtual_call hooks.
        (debug_nothing_uid): New function.
        * debug.c (do_nothing_debug_hooks): Add dummy entries for new hooks.
        (debug_nothing_uid): New function.
        * dbxout.c (dbx_debug_hooks): Add dummy entries for new hooks.
        (xcoff_debug_hooks): Likewise.
        * sdbout.c (sdb_debug_hooks): Likewise.
        * vmsdbgout.c (vmsdbg_debug_hooks): Likewise.
        * doc/invoke.texi (-fenable-icf-debug): New option.

2009-10-08  Alexandre Oliva  <aoliva@redhat.com>

        PR debug/41353
        * regmove.c (regmove_backward_pass): Replace src with dst in the
        debug insn, and check for dst before rather than after.

2009-10-08  Janis Johnson <janis187@us.ibm.com>

        * config/rs6000/rs6000.c (rs6000_delegitimize_address): Remove.
        (TARGET_DELEGITIMIZE_ADDRESS): Likewise.

2009-10-08  Jan Hubicka  <jh@suse.cz>

        PR middle-end/41626
        * cgraphbuild.c (record_reference): When parameter DATA is NULL,
        do not mark cgraph nodes as needed.
        (record_references_in_initializer): Add new only_vars parameter.
        * cgraph.h (record_references_in_initializer): New parameter.
        * varasm.c (assemble_variable): Update call.
        * varpool.c (varpool_analyze_pending_decls): Always look for
        referenced vars.

2009-10-08  Anatoly Sokolov  <aesok@post.ru>

        * config/avr/avr.c (last_insn_address) Remove variable.
        (expand_prologue): Don't initialise last_insn_address variable.
        (final_prescan_insn): Don't output insn size.
        * config/avr/avr.opt (msize): Remove switch.
        * doc/invoke.texi (AVR Options): Remove documentation of -msize
        switch.

2009-10-08  Adam Nemet  <anemet@caviumnetworks.com>

        * combine.c (label_tick_ebb_start): Fix comment.
        (combine_instructions): Set label_tick and label_tick_ebb_start before
        calling setup_incoming_promotions.  Start them from 1.  Increment
        label_tick instead of deriving it from the BB index.  Rather than
        comparing ticks use the block from the previous iteration to decide
        whether to start a new EBB.  Remove empty lines before function.

2009-10-08  Michael Matz  <matz@suse.de>

        PR middle-end/41573
        * builtins.c (fold_builtin_isascii): Use fold_build2.
        (fold_builtin_isdigit): Ditto.
        * except.c (duplicate_eh_regions_1): Tolerate NULL labels.
        * tree-cfg.c (struct rus_data, remove_useless_stmts_warn_notreached,
        remove_useless_stmts_cond, remove_useless_stmts_tf,
        remove_useless_stmts_tc, remove_useless_stmts_bind,
        remove_useless_stmts_goto, remove_useless_stmts_label,
        remove_useless_stmts_1, remove_useless_stmts,
        pass_remove_useless_stmts): Remove.
        * tree-pass.h (pass_remove_useless_stmts): Don't declare.
        * passes.c (init_optimization_passes): Don't add
        pass_remove_useless_stmts.
        * tree-eh.c (lower_eh_constructs_2): Handle empty cleanups.
        * tree.c (free_lang_data_in_decl): Don't clear DECL_INITIAL of
        static constants.
        * lto-symtab.c (lto_symtab_register_decl): Accepts DECL_INITIAL
        for static constants.
        * lto-streamer-out.c (output_gimple_stmt): Handle GIMPLE_NOP.
        * lto-streamer-in.c (input_gimple_stmt): Handle GIMPLE_NOP.

2009-10-08  Richard Guenther  <rguenther@suse.de>

        * gimple.c (free_gimple_type_tables): New function.
        * gimple.h (free_gimple_type_tables): Declare.

2009-10-07  Mark Heffernan  <meheff@google.com>

        * ipa-prop.c (ipa_print_node_params) Only print
        names of named arguments.

2009-10-08  Rafael Avila de Espindola  <espindola@google.com>

        * gcc.c (LINK_COMMAND_SPEC): Pass libc with -pass-through if it is
        being statically linked.

2009-10-08  Rainer Orth  <ro@CeBiTec.Uni-Bielefeld.DE>

        * collect2.c (add_lto_object): Only define if OBJECT_FORMAT_NONE.

2009-10-08  Jan Hubicka  <jh@suse.cz>

        PR bootstrap/41620
        * ipa.c (cgraph_externally_visible_p,
        function_and_variable_visibility,
        whole_program_function_and_variable_visibility): Skip non-finalized
        nodes.

2009-10-08  Nick Clifton  <nickc@redhat.com>

        * config/mn10300/mn10300.h (CONSTANT_ADDRESS_P): Do not allow
        CONST_DOUBLEs.

2009-10-08  Andreas Tobler  <a.tobler@schweiz.org>

        PR bootstrap/37739
        * config.host: Use config/x-cflags-O1 for powerpc FreeBSD.

2009-10-07  Joseph Myers  <joseph@codesourcery.com>

        PR c/41182
        * c-common.c (c_fully_fold_internal): Strip nops from the result
        of recursive calls to c_fully_fold_internal.
        (c_wrap_maybe_const): New.
        (c_save_expr): Use c_wrap_maybe_const.
        * c-common.h (c_wrap_maybe_const): Declare.
        * c-typeck.c (build_conditional_expr, c_finish_stmt_expr,
        build_binary_op): Use c_wrap_maybe_const.

2009-10-07  Kaveh R. Ghazi  <ghazi@caip.rutgers.edu>

        * real.c: Fix comment to reflect actual exponent size.

2009-10-08  Ben Elliston  <bje@au.ibm.com>

        * config/rs6000/a2.md: Add FSF comment header.

2009-10-07  Uros Bizjak  <ubizjak@gmail.com>

        * config/i386/i386.md (any_extend): New code iterator.
        (u, s): New code attributes.
        (sgnprefix): Ditto.
        (DWIH): Rewrite as code iterator for SI and DI modes.
        (DWI): Rewrite as mode attribute.
        (dwi): New mode attribute.
        (di): Depend on SI mode and DI mode.
        (doubleint_general_operand): Remove mode attribute.

        (*lea_1): Macroize insn from *lea_1_rex64 and *lea_1 patterns using
        DWIH mode iterator.

        (*add<mode>3_doubleword): Use DWIH as the base mode iterator.
        (*sub<mode>3_doubleword): Ditto.

        (mul<mode>3): Macroize expander from mul{hi,si,di}3 patterns
        using SWIM248 mode iterator.
        (*mul<mode>3_1): Macroize insn from mul{si,di}3_1 patterns
        using SWI48 mode iterator.
        (<u>mul<mode><dwi>3): Macroize expander from {,u}mul{sidi,diti}3
        patterns using DWIH mode iterator and any_extend code iterator.
        (<u>mulqihi3): Macroize expander from {,u}mulqihi3 patterns
        using any_extend code iterator.
        (*<u>mul<mode><dwi>3_1): Macroize insn from {,u}mul{sidi,diti}3_1
        patterns using DWIH mode iterator and any_extend code iterator.
        (*<u>mulqihi3_1): Macroize insn from {,u}mulqihi3_1 patterns
        using any_extend code iterator.
        (<s>mul<mode>3_highpart): Macroize expander from
        {s,u}mul{si,di}3_highpart patterns using DWIH mode iterator
        and any_extend code iterator.
        (*<s>muldi3_highpart_1): Macroize insn from
        *{s,u}muldi3_highpart_rex64 patterns using any_extend code iterator.
        (*<s>mulsi3_highpart_1): Macroize insn from *{s,u}mulsi3_highpart_1
        patterns using any_extend code iterator.
        (*<s>mulsi3_highpart_zext): Macroize insn from
        *{s,u}mulsi3_highpart_zext patterns using any_extend code iterator.

2009-10-07  Jakub Jelinek  <jakub@redhat.com>

        * dwarf2out.c (tree_add_const_value_attribute_for_decl): Don't add
        DW_AT_const_value if VAR_DIE already has DW_AT_abstract_origin
        refering to a DIE with DW_AT_const_value.

2009-10-07  Vladimir Makarov  <vmakarov@redhat.com>

        PR middle-end/22072
        * ira-lives.c (check_and_make_def_conflict): Process all operands.

2009-10-06  Jan Hubicka  <jh@suse.cz>

        * cgraph.c (cgraph_node_can_be_local): Handle externally visible nodes
        correctly.

2009-10-06  Uros Bizjak  <ubizjak@gmail.com>

        * config/i386/i386.md (*lea_1_rex64, *lea_1, *lea_1_zext,
        *lea_2_rex64): Move before *add<mode>_1 pattern.

2009-10-07  Jan Hubicka  <jh@suse.cz>

        * collect2.c (main): Add -fno-whole-program.
        * gcc.c (set_collect_gcc_options): Do not remove whole program here.

2009-10-07  Jan Hubicka  <jh@suse.cz>

        * lto-symtab.c (lto_cgraph_replace_node): Assert that inline clones
        has no address taken.
        * cgraph.c (cgraph_mark_needed_node): Assert that inline clones are
        never needed.
        (cgraph_clone_node): Clear externally_visible flag for clones.
        * cgraph.h (cgraph_only_called_directly_p,
        cgraph_can_remove_if_no_direct_calls_p): New predicates.
        * tree-pass.h (pass_ipa_whole_program_visibility): Declare.
        * ipa-cp.c (ipcp_cloning_candidate_p): Use new predicate.
        (ipcp_initialize_node_lattices, ipcp_estimate_growth,
        ipcp_insert_stage): Likwise.
        * cgraphunit.c (cgraph_decide_is_function_needed): Do not compute
        externally_visible flag.
        (verify_cgraph_node): Verify that inline clones look right.
        (process_function_and_variable_attributes): Do not set
        externally_visible flags.
        (ipa_passes): Avoid executing small_ipa_passes at LTO stage; they've
        been already run.
        * lto-cgraph.c (lto_output_node): Assert that inline clones are not
        boundaries.
        * ipa-inline.c (cgraph_clone_inlined_nodes): Use new predicates;
        clear externally_visible when turning into inline clones
        (cgraph_mark_inline_edge): Use new predicates.
        (cgraph_estimate_growth): Likewise.
        (cgraph_decide_inlining): Likewise.
        * ipa.c (cgraph_postorder): Likewise.
        (cgraph_remove_unreachable_nodes): Likewise; sanity check
        that inline clones are not needed.
        (cgraph_externally_visible_p): New predicate.
        (function_and_variable_visibility): Add whole_program parameter;
        always set externally_visible flag; handle COMDAT function
        privatization.
        (local_function_and_variable_visibility): New function.
        (gate_whole_program_function_and_variable_visibility): New function.
        (whole_program_function_and_variable_visibility): New function.
        (pass_ipa_whole_program_visibility): New function.
        * passes.c  (init_optimization_passes): Add whole program visibility
        pass.
        (do_per_function_toporder, function_called_by_processed_nodes_p): Do
        not care about needed/reachable flags.
        * varpool.c: Include flags.h
        (decide_is_variable_needed): When doing LTO assume whole-program mode.
        (varpool_finalize_decl): When we are in LTO read-back, all variables
        are analyzed.
        (varpool_analyze_pending_decls): Skip analyzis of analyzed vars.

2009-10-07  Andreas Krebbel  <Andreas.Krebbel@de.ibm.com>

        * config/s390/tpf.h (TARGET_DEFAULT): Remove MASK_HARD_FLOAT and
        add MASK_HARD_DFP.

2009-10-07  Andreas Krebbel  <Andreas.Krebbel@de.ibm.com>

        * config.gcc: Don't include the makefile fragments intended for
        libgcc.
        * config/s390/fixdfdi.h: File removed.
        * config/s390/libgcc-glibc.ver: File removed.
        * config/s390/s390.h: Remove the fixdfdi.h hack.
        * config/s390/t-crtstuff: File moved to libgcc dir.
        * config/s390/t-linux: Likewise.
        * config/s390/t-tpf: libgcc specific parts removed.
        * config/s390/t-linux64: Likewise.

2009-10-06  Jerry Quinn  <jlquinn@optonline.net>

        * Makefile.in (lto-wrapper): Use COMPILER and ALL_COMPILERFLAGS.
        (lto-compress.o): Likewise.

2009-10-07  Danny Smith  <dannysmith@users.sourceforge.net>

        PR target/41512
        * config/i386/winnt.c (i386_pe_determine_dllexport_p): Don't propagate
        dllexport to class members here.
        (i386_pe_determine_dllimport_p): Only check static class data for
        definition.
        (i386_pe_encode_section_info): Don't recheck DECL_DLLIMPORT_P.
        * config/i386/winnt-cxx.c (i386_pe_type_dllimport_p): Only check
        functions for vague linkage.
        (i386_pe_type_dllexport_p): Fix formatting.
        (maybe_add_dllexport) New function.
        (i386_pe_adjust_class_at_definition): Use it to propagate dllexport
        to class members.

2009-10-07  Ben Elliston  <bje@au.ibm.com>

        * config/rs6000/a2.md: Remove duplicated lines.

2009-10-07  Ben Elliston  <bje@au.ibm.com>

        * config.gcc (powerpc*-*-*): Handle a2.
        * config/rs6000/rs6000.md (cpu): Add ppca2.  Include "a2.md".
        * config/rs6000/a2.md: New file.
        * config/rs6000/rs6000.opt (mno-update): New.
        (mupdate): Return to using a mask, not a var.
        * config/rs6000/rs6000.h (ASM_CPU_SPEC): Add support for a2.
        (enum processor_type): Add PROCESSOR_PPCA2.
        * config/rs6000/rs6000.c (ppca2_cost): New costs.
        (rs6000_override_options): Add "a2" to processor_target_table.
        Update rs6000_always_hint logic.  Correctly set rs6000_cost for a2.
        * doc/invoke.texi (RS/6000 and PowerPC Options): Document -mcpu=a2.

2009-10-06  Uros Bizjak  <ubizjak@gmail.com>

        * config/i386/i386.md (float<SSEMODEI24:mode><X87MODEF:mode>2):
        Use explicit gen_truncxfsf2 and gen_truncxfdf2 references to avoid
        reference to nonexistent gen_truncxfxf2 function.

2009-10-06  Uros Bizjak  <ubizjak@gmail.com>

        * config/i386/i386.md (SWI48, SDWIM, DWI): New mode iterators.
        (DWIH, g, di, doubleint_general_operand): New mode attributes.
        (general_operand): Handle TI mode.
        (add<mode>3): Macroize expander from add{qi,hi,si,di,ti}3 patterns
        using SDWIM mode iterator.
        (*add<mode>3_doubleword): New insn_and_split pattern.  Macroize
        pattern from *add{di,ti}3_1 patterns and corresponding splitters
        using DWI mode iterator.
        (add<mode>3_carry): Macroize insn from add{qi,hi,si,di}3_carry
        patterns using SWI mode iterator.
        (*add<mode>3_cc): Macroize insn from add{si,di}3_cc patterns
        using SWI48 mode iterator.
        (*add<mode>_1): Ditto from add{si,di}_1 patterns.
        (*add<mode>_2): Ditto from add{si,di}_2 patterns.
        (*add<mode>_3): Ditto from add{si,di}_3 patterns.
        (*add<mode>_5): Ditto from add{si,di}_5 patterns.
        (sub<mode>3): Macroize expander from sub{qi,hi,si,di,ti}3 patterns
        using SDWIM mode iterator.
        (*sub<mode>3_doubleword): New insn_and_split pattern.  Macroize
        pattern from *sub{di,ti}3_1 patterns and corresponding splitters
        using DWI mode iterator.
        (sub<mode>3_carry): Macroize insn from sub{qi,hi,si,di}3_carry
        patterns using SWI mode iterator.
        (*sub<mode>_1): Ditto from from sub{qi,hi,si,di}_1 patterns.
        (*sub<mode>_2): Ditto from sub{qi,hi,si,di}_2 patterns.
        (*sub<mode>_3): Ditto from sub{qi,hi,si,di}_3 patterns.
        (<plusminus_insn>xf3): Macroize expander from addxf3 and subxf3
        patterns using plusminus code iterator.
        (<plusminus_insn><mode>3): Macroize expander from add<mode>3 and
        sub<mode>3 patterns using plusminus code iterator.
        * config/i386/i386.c (override_options): Update the call to
        gen_subdi_carry_rex64 for renamed function.
        (ix86_expand_int_addcc): Update calls to gen_subdi3_carry_rex64
        and gen_adddi3_carry_rex64 for renamed functions.  Use indirect
        calls to instruction expanders.

2009-10-06  Martin Jambor  <mjambor@suse.cz>

        PR bootstrap/41395
        * opts.c (decode_options): Run IPA-SRA at -O2.

2009-10-06  Richard Guenther  <rguenther@suse.de>

        * lto-symtab.c (lto_symtab_entry_hash): Hash strings, not pointers.

2009-10-06  Tobias Burnus  <burnus@net-b.de>

        PR lto/41591
        * doc/invoke.texi (-flto,-fwhole-program): Make clear that the
        -flto and -fwhole-program flags can be combined.

2009-10-06  Ryan Mansfield  <rmansfield@qnx.com>

        PR driver/41217
        * gcc.c (process_command): Check that -o argument was specified.

2009-10-06  Jerry Quinn  <jlquinn@optonline.net>

        * gimple.c (gimple_type_hash): Use CONST_CAST_TREE to fix compilation.

2009-10-05  Ralf Wildenhues  <Ralf.Wildenhues@gmx.de>

        * c.opt (Wjump-misses-init): Fix typo to enable for ObjC.
        * doc/invoke.texi (Warning Options): Annotate allowed languages
        for -Wunsuffixed-float-constants.

2009-10-05  Jakub Jelinek  <jakub@redhat.com>

        * dwarf2out.c (modified_type_die): Don't add DW_AT_name to
        DW_TAG_{const,volatile}_type if its DW_AT_type already has the
        same name and isn't the main variant.

        PR debug/41558
        * dwarf2out.c (loc_by_reference): Removed.
        (dw_loc_list_1): New function.
        (dw_loc_list): Remove toplev argument, add want_address argument.
        Don't look at decl_by_reference_p at all.  Use dw_loc_list_1.
        (loc_list_from_tree) <case VAR_DECL>: Pass want_address rather than
        want_address == 2 to dw_loc_list.  For successful dw_loc_list
        set have_address to 1 only if want_address is not 0.

2009-10-05  Richard Sandiford  <rdsandiford@googlemail.com>

        * config/mips/mips-protos.h (mips_trampoline_code_size): Declare.
        * config/mips/mips.h (TRAMPOLINE_SIZE): Redefine as the size of
        a code block followed by two pointers.
        (TRAMPOLINE_ALIGNMENT): Define to 64 for 32-bit targets too.
        * config/mips/mips.c (MIPS_LOAD_PTR): New macro.
        (MIPS_MOVE): Likewise.
        (MIPS_LUI): Likewise.
        (MIPS_JR): Likewise.
        (MIPS_BAL): Likewise.
        (MIPS_NOP): Likewise.
        (mips_asm_trampoline_template): Delete.
        (mips_trampoline_code_size): New function.
        (mips_trampoline_init): Add shorter sequences for all cases
        except Pmode == DImoe && !TARGET_USE_PIC_FN_ADDR_REG.
        Calculate the opcodes directly, rather than copying from a template.
        Only flush the code part of the trampoline.
        (TARGET_ASM_TRAMPOLINE_TEMPLATE): Delete.

2009-10-05  Richard Sandiford  <rdsandiford@googlemail.com>

        * config/mips/mips.h (DWARF_FRAME_RETURN_COLUMN): Replace
        GP_REG_FIRST + 31 with RETURN_ADDR_REGNUM.
        (INCOMING_RETURN_ADDR_RTX): Likewise.
        (FUNCTION_PROFILER): Likewise.  Replace GP_REG_FIRST + 1
        with AT_REGNUM.
        * config/mips/sdemtk.h (FUNCTION_PROFILER): Replace GP_REG_FIRST + 31
        with RETURN_ADDR_REGNUM.
        (MIPS_SAVE_REG_FOR_PROFILING_P): Likewise.
        * config/mips/mips.c (mips16_build_call_stub): Replace
        GP_REG_FIRST + 31 with RETURN_ADDR_REGNUM, GP_REG_FIRST + 1
        with AT_REGNUM and 31 with RETURN_ADDR_REGNUM.
        (mips_print_operand_punctuation): Likewise.
        (mips_frame_set): Likewise.
        (mips16e_output_save_restore): Likewise.
        (mips_cfun_might_clobber_call_saved_reg_p): Likewise.
        (mips_save_reg_p): Likewise.
        (mips_return_addr): Likewise.
        (mips_set_return_address): Likewise.
        (mips_direct_save_slot_move_p): Likewise.
        (mips_output_function_prologue): Likewise.
        (mips_restore_reg): Likewise.
        (mips_expand_epilogue): Likewise.
        (mips_epilogue_uses): Likewise.
        * config/mips/mips.md (RETURN_ADD_REGNUM): Define.
        (*mov<mode>_ra): Use it instead of a hard-coded 31.
        (clear_hazard_<mode>): Likewise.
        (call_internal): Likewise.
        (call_internal_direct): Likewise.
        (call_direct_split): Likewise.
        (call_value_internal): Likewise.
        (call_value_split): Likewise.
        (call_value_internal_direct): Likewise.
        (call_value_direct_split): Likewise.
        (call_value_multiple_internal): Likewise.
        (call_value_multiple_split): Likewise.

2009-10-05  Eric Botcazou  <ebotcazou@adacore.com>
            Jakub Jelinek  <jakub@redhat.com>

        PR rtl-optimization/41511
        * combine.c (record_value_for_reg): Pass explicit values as argument
        to get_last_value_validate.
        (get_last_value_validate): Document INSN parameter.
        For non-readonly MEMs, assume they might have been modified if INSN
        was in another basic block.
        (get_last_value): Minor reformatting.

2009-10-05  Andrew Pinski  <andrew_pinski@playstation.sony.com>

        PR tree-opt/40992
        * final.c (asm_str_count): Split out from asm_insn_count.
        * rtl.h (asm_str_count): New prototype.
        * tree-inline (estimate_num_insns) <case GIMPLE_ASM>: Call
        asm_str_count.

2009-10-05  Sriraman Tallam  <tmsriram@google.com>

        * doc/plugins.texi: Change plugin_pass to register_pass_info.

2009-10-05  Basile Starynkevitch  <basile@starynkevitch.net>
            Rafael Espindola  <espindola@google.com>

        * gengtype.c (write_types): Moved call to write_func_for_structure
        into seperate loops.

2009-10-05  Richard Guenther  <rguenther@suse.de>

        PR lto/41281
        * lto-cgraph.c (output_cgraph): Output toplevel asms.
        (input_cgraph_1): Input toplevel asms.

2009-10-05  Richard Guenther  <rguenther@suse.de>

        PR lto/40902
        * lto-symtab.c (lto_compatible_attributes_p): Remove.
        (external_aggregate_decl_p): Likewise.
        (lto_symtab_compatible): Re-structure.  Remove dead code.
        For variables ignore toplevel qualifiers when comparing types.
        Issue warnings, not errors for mismatched user-alignment.

2009-10-05  Richard Guenther  <rguenther@suse.de>

        PR lto/41552
        PR lto/41487
        * lto-symtab.c (struct lto_symtab_base_def): Remove.
        (struct lto_symtab_identifier_def): Likewise.
        (struct lto_symtab_decl_def): Likewise.
        (struct lto_symtab_entry_def): New.
        (lto_symtab_identifier_t): Rename to ...
        (lto_symtab_entry_t): ... this.
        (lto_symtab_decls): Remove.
        (lto_symtab_base_hash): Rename to ...
        (lto_symtab_entry_hash): ... this.
        (lto_symtab_base_eq): Rename to ...
        (lto_symtab_entry_eq): ... this.
        (lto_symtab_base_marked_p): Rename to ...
        (lto_symtab_entry_marked_p): ... this.
        (lto_symtab_identifier_marked_p): Remove.
        (lto_symtab_decl_marked_p): Likewise.
        (lto_symtab_maybe_init_hash_tables): Rename to ...
        (lto_symtab_maybe_init_hash_table): ... this.
        (lto_symtab_set_resolution_and_file_data): Remove.
        (lto_symtab_register_decl): New function.
        (lto_symtab_get_identifier): Remove.
        (lto_symtab_get): New function.
        (lto_symtab_get_resolution): Adjust.
        (lto_symtab_get_identifier_decl): Remove.
        (lto_symtab_set_identifier_decl): Likewise.
        (lto_symtab_merge_decl): Rename to ...
        (lto_symtab_merge): ... this.  Rewrite.
        (lto_symtab_merge_var): Remove.
        (lto_symtab_merge_fn): Likewise.
        (lto_symtab_prevailing_decl): Adjust.
        (lto_cgraph_replace_node): New function.
        (lto_symtab_merge_decls_2): Likewise.
        (lto_symtab_merge_decls_1): Likewise.
        (lto_symtab_fixup_var_decls): Likewise.
        (lto_symtab_resolve_symbols): Likewise.
        (lto_symtab_merge_decls): Likewise.
        (lto_symtab_prevailing_decl): Adjust.
        (lto_symtab_get_symtab_def): Remove.
        (lto_symtab_get_file_data): Likewise.
        (lto_symtab_clear_resolution): Adjust.
        (lto_symtab_clear_resolution): Likewise.
        * lto-cgraph.c (input_edge): Do not merge cgraph nodes here.
        (input_cgraph_1): Likewise.
        * lto-streamer-in.c (get_resolution): Do not provide fake
        symbol resolutions here.
        (deferred_global_decls): Remove.
        (lto_register_deferred_decls_in_symtab): Likewise.
        (lto_register_var_decl_in_symtab): Change signature, register
        variable via lto_symtab_register_decl.
        (lto_register_function_decl_in_symtab): Likewise.
        (lto_read_tree): Adjust.
        * lto-streamer.h (lto_register_deferred_decls_in_symtab): Remove.
        (lto_symtab_merge_var): Likewise.
        (lto_symtab_merge_fn): Likewise.
        (lto_symtab_register_decl): Declare.
        (lto_symtab_merge_decls): Likewise.

2009-10-05  Richard Guenther  <rguenther@suse.de>

        PR tree-optimization/23821
        * tree-vrp.c (vrp_finalize): Do not perform copy propagation.
        * tree-ssa-dom.c (cprop_operand): Do not propagate copies into
        simple IV increments.

2009-10-05  Ramana Radhakrishnan  <ramana.radhakrishnan@arm.com>

        * config/arm/arm.c (arm_override_options): Really initialize
        flag_dwarf2_cfi_asm to 0.

2009-10-05  Doug Kwan  <dougkwan@google.com>

        PR rtl-optimization/41574
        * combine.c (distribute_and_simplify_rtx): Quit if RTX mode is
        floating point and we are not doing unsafe math optimizations.

2009-10-03  Simon Baldwin  <simonb@google.com>
            Cary Coutant  <ccoutant@google.com>
            Rafael Espindola  <espindola@google.com>
            Richard Guenther  <rguenther@suse.de>
            Jan Hubicka  <jh@suse.cz>
            Doug Kwan <dougkwan@google.com>
            H.J. Lu  <hongjiu.lu@intel.com>
            Bill Maddox  <maddox@google.com>
            Ryan Mansfield  <rmansfield@qnx.com>
            Diego Novillo  <dnovillo@google.com>
            Ollie Wild  <aaw@google.com>
            Kenneth Zadeck <zadeck@naturalbridge.com>

        * lto-cgraph.c: New file.
        * lto-compress.c: New file.
        * lto-compress.h: New file.
        * lto-opts.c: New file.
        * lto-section-in.c: New file.
        * lto-section-out.c: New file.
        * lto-streamer-in.c: New file.
        * lto-streamer-out.c: New file.
        * lto-streamer.c: New file.
        * lto-streamer.h: New file.
        * lto-symtab.c: New file.
        * lto-wpa-fixup.c: New file.
        * lto-wrapper.c: New file.

2009-10-03  Simon Baldwin  <baldwin@google.com>
            Ben Elliston  <bje@au.ibm.com>
            Rafael Espindola  <espindola@google.com>
            Nathan Froyd  <froydnj@codesourcery.com>
            Jan Hubicka  <jh@suse.cz>
            Doug Kwan  <dougkwan@google.com>
            Diego Novillo  <dnovillo@google.com>
            Kenneth Zadeck  <zadeck@naturalbridge.com>

        * Makefile.in (enable_lto): New.
        (site.exp): If @enable_lto@ is set to 'yes' define ENABLE_LTO.
        (LINKER_PLUGIN_API_H): Define.
        (LTO_SYMTAB_H): Define.
        (LTO_STREAMER_H): Define.
        (TREE_VECTORIZER_H): Define.
        (INCLUDES): Add LIBELFINC.
        (OBJS-common): Add lto-cgraph.o, lto-streamer-in.o,
        lto-streamer-out.o, lto-section-in.o, lto-section-out.o, lto-symtab.o,
        lto-opts.o, lto-streamer.o, lto-wpa-fixup.o, lto-compress.o.
        (MOSTLYCLEANFILES): Add lto-wrapper$(exeext)
        (native): Add lto-wrapper$(exeext)
        (lto-compress.o, lto-cgraph.o, lto-streamer-in.o,
        lto-streamer-out.o, lto-section-in.o, lto-section-out.o,
        lto-symtab.o, lto-opts.o, lto-streamer.o, lto-wpa-fixup.o): New rules.
        (gimple.o): Add dependency on LTO_HEADER_H and LTO_SECTION_OUT_H.
        (varasm.o): Add dependency on tree-iterator.h.
        (cgraph.o): Add dependency on cif-code.def.
        (ipa-reference.o): Add dependency on LTO_STREAMER_H.
        (ipa-pure-const.o): Likewise.
        (GTFILES): Add lto-symtab.c.
        (install-lto-wrapper): New.
        * configure.ac: If 'lto' is in enable_languages, define ENABLE_LTO
        and enable_lto.  If LIBELFLIBS is set, define HAVE_libelf.
        * config.in: Regenerate.

2009-10-03  Rafael Espindola  <espindola@google.com>
            Diego Novillo  <dnovillo@google.com>

        * cgraphunit.c (ipa_passes): Prevent lto1 from calling
        ipa_write_summaries.
        Call execute_ipa_summary_passes for all_regular_ipa_passes and
        all_lto_gen_passes.
        (cgraph_optimize): Make extern.

2009-10-03  Nathan Froyd  <froydnj@codesourcery.com>
            Kenneth Zadeck <zadeck@naturalbridge.com>

        * toplev.c (in_lto_p): Declare.
        * collect2.c (scan_prog_file): Read all the output when reading
        information for LTO.
        (enum lto_mode_d): Declare.

2009-10-03  Richard Guenther  <rguenther@suse.de>
            Diego Novillo  <dnovillo@google.com>

        * gimple.c: Include target.h and alias.h.
        (gimple_types): Declare.
        (type_hash_cache): Declare.
        (gimple_alloc_stat): Make extern.
        (gimple_build_eh_must_not_throw): Call
        gimple_eh_must_not_throw_set_fndecl.
        (struct type_pair_d): Declare.
        (type_pair_t): Declare.
        (type_pair_hash): New.
        (type_pair_eq): New.
        (lookup_type_pair): New.
        (gimple_force_type_merge): New.
        (compare_type_names_p): New.
        (compare_field_offset): New.
        (gimple_types_compatible_p): New.
        (struct sccs): Declare.
        (next_dfs_num): Declare.
        (iterative_hash_gimple_type): New.
        (visit): New.
        (iterative_hash_type_name): New.
        (iterative_hash_gimple_type): New.
        (gimple_type_hash): New.
        (gimple_type_eq): New.
        (gimple_register_type): New.
        (print_gimple_types_stats): New.
        (gimple_signed_or_unsigned_type): New.
        (gimple_unsigned_type): New.
        (gimple_signed_type): New.
        (gimple_get_alias_set): New.
        (gimple_decl_printable_name): Do not use DMGL_TYPES.
        * gimple.h (gimple_alloc, gimple_alloc_stat): Declare.
        (gimple_force_type_merge): Declare.
        (gimple_types_compatible_p): Declare.
        (gimple_register_type): Declare.
        (print_gimple_types_stats): Declare.
        (gimple_unsigned_type): Declare.
        (gimple_signed_type): Declare.
        (gimple_get_alias_set): Declare.
        (gimple_eh_must_not_throw_set_fndecl): New.

2009-10-03  Jan Hubicka  <jh@suse.cz>
            Kenneth Zadeck <zadeck@naturalbridge.com>

        * ipa-pure-const.c: Include lto-streamer.h.
        (register_hooks): Factor out of ...
        (generate_summary): ... here.
        (pure_const_write_summary): New.
        (pure_const_read_summary): New.
        (pass_ipa_pure_const): Add pure_const_write_summary and
        pure_const_read_summary.
        * ipa-reference.c: Include lto-streamer.h.
        (add_new_function): New.
        (remove_node_data): New.
        (duplicate_node_data): New.
        (ipa_init): Guard against multiple calls.
        Move hook setup from analyze_function.
        (write_node_summary_p): New.
        (ipa_reference_write_summary): New.
        (ipa_reference_read_summary): New.
        (pass_ipa_reference): Add ipa_reference_write_summary and
        ipa_reference_read_summary.
        * cgraph.h (cgraph_local_info): Add field lto_file_data.
        (struct cgraph_edge): Add fields lto_stmt_uid and
        call_stmt_cannot_inline_p.
        (cgraph_optimize): Declare.
        (cgraph_decide_is_function_needed): Declare.
        (reset_inline_failed): Declare.
        (enum LTO_cgraph_tags): Declare.
        (LTO_cgraph_tag_names): Declare.
        (LCC_NOT_FOUND): Define.

2009-10-03  Doug Kwan  <dougkwan@google.com>
            Rafael Espindola  <espindola@google.com>
            Jan Hubicka  <jh@suse.cz>
            Diego Novillo  <dnovillo@google.com>
            Kenneth Zadeck  <zadeck@naturalbridge.com>

        * passes.c (all_regular_ipa_passes): New.
        (all_ipa_passes): Rename to all_small_ipa_passes.
        (init_optimization_passes): Init all_regular_ipa_passes.
        * tree-pass.h (all_regular_ipa_passes): New.
        (all_ipa_passes): Rename to all_small_ipa_passes.
        * passes.c (all_lto_gen_passes): New.
        (init_optimization_passes): Initialize all_lto_gen_passes.
        (execute_ipa_summary_passes): Make non-static.
        (ipa_write_summaries_1): New.
        (ipa_write_summaries_2): New.
        (ipa_write_summaries): New.
        (ipa_write_summaries_of_cgraph_node_set): New.
        (ipa_read_summaries_1): New.
        (ipa_read_summaries): New.
        (execute_ipa_pass_list): Call cgraph_process_new_functions.
        (execute_regular_ipa_pass_list): Remove.
        (init_optimization_passes): Schedule
        pass_rebuild_cgraph_edges and pass_early_inline outside
        of pass_all_early_optimizations.  Document reason.
        (pass_ipa_lto_gimple_out, pass_ipa_lto_wpa_fixup,
        pass_ipa_lto_finish_out): New pass.
        (pass_ipa_summary_passes): Start and stop timers if the pass has them.
        (execute_all_ipa_transforms): New.
        (execute_one_pass): Don't call execute_one_ipa_transform_pass.
        (dump_properties, debug_properties): New.
        * tree-optimize.c (gate_all_early_local_passes): Return
        false if we are in lto1.
        (tree_rest_of_compilation): Call execute_all_ipa_transforms.
        * tree-pass.h (execute_all_ipa_transforms): Declare.
        (pass_ipa_function_and_variable_visibility): Declare.
        (pass_ipa_early_inline): Declare.
        (pass_ipa_lto_gimple_out): Declare.
        (pass_ipa_lto_wpa_fixup): Declare.
        (pass_ipa_lto_finish_out): Declare.
        (all_small_ipa_passes, all_regular_ipa_passes,
        all_lto_gen_passes): Declare.
        (execute_ipa_summary_passes): Declare.
        (execute_all_ipa_transforms): Declare.
        (ipa_write_summaries): Declare
        (ipa_write_summaries_of_cgraph_node_set): Declare.
        (ipa_read_summaries): Declare.

2009-10-03  Doug Kwan  <dougkwan@google.com>
            Ollie Wild  <aaw@google.com>

        * ipa-prop.c (ipa_propagate_indirect_call_infos): Do nothing in WPA.

        * collect2.c (LTO_MODE_NONE, LTO_MODE_LTO, LTO_MODE_WPA): New enums.
        (lto_mode): New variable.
        (maybe_run_lto_and_relink): Handle the -fwpa option.
        (main): Handle the -fwpa option.
        (maybe_unlink_list): New function.
        * gcc.c (link_lto_options): Replace -flto with -fwpa.
        * common.opt (flto): New flag.
        * toplev.c (flag_generate_lto): Declare.

2009-10-03  Simon Baldwin  <simonb@google.com>

        * common.opt (flto-compression-level): New flag.

        * opts.c: Include lto-opts.h.
        (handle_option): Call lto_register_user_option for each
        valid option handled.
        (decode_options): Clear registered options before the options
        handling loop.

2009-10-03  Cary Coutant  <ccoutant@google.com>

        * collect2.c (is_elf): New function.
        (scan_prog_file): Require LTO object to be in ELF format.

2009-10-03  Rafael Espindola  <espindola@google.com>

        * gcc.c (LINK_COMMAND_SPEC): Use the -pass-through option to pass
        libgcc to the linker.

        * ipa-cp.c (cgraph_gate_cp): Return false if LTRANS is running.

        * collect2.c (maybe_run_lto_and_relink): Execute lto-wrapper.
        (collect_execute): Add flags argument. Pass flags to pex_run. Update
        all callers.
        * collect2.h (collect_execute): Add flags argument.
        * tlink.c (tlink_execute): Update call to collect_execute.
        * gcc.c (main): Set the COLLECT_LTO_WRAPPER environment variable.
        (use_linker_plugin): New.
        (use_linker_plugin_spec_function): New.
        (LINK_COMMAND_SPEC): Pass plugin options to the linker.
        (linker_plugin_file_spec): New.
        (lto_wrapper_spec): New.
        (lto_gcc_spec): New.
        (static_specs): Add linker_plugin_file, lto_wrapper and lto_gcc.
        (static_spec_functions): Add use-linker-plugin.
        (process_command): Handle -use-linker-plugin.
        (main): Use lto_wrapper_spec instead of lto_wrapper. Set
        linker_plugin_file_spec and lto_gcc_spec.
        (use_linker_plugin_spec_function): New.

2009-10-03  Richard Guenther  <rguenther@suse.de>

        PR lto/41547
        PR lto/41548
        * tree.h (is_lang_specific): Include LANG_TYPE.
        * tree.c (find_decls_types_r): Manually add interesting parts
        of TYPE_FIELDS.  Walk BINFO_VIRTUALS.  Do not walk TYPE_METHODS.

        * gimple.c (type_pair_hash): Make symmetric.
        (type_pair_eq): Likewise.
        (lookup_type_pair): Increase initial hashtable size.
        (gimple_force_type_merge): Rely on type-pair symmetry.
        (visit): Remove excessive checking code.
        (iterative_hash_type_name): Do not hash TYPE_NAME of anonymous unions.
        (gimple_register_type): Remove getenv calls, shrink initial
        hashtable size.

        PR middle-end/41502
        * cgraphunit.c (ipa_passes): Do not remove bodies of extern
        inline functions if not generating lto output.

        PR lto/41379
        * toplev.c (finalize): In WPA mode remove the asm file.

2009-10-03  Doug Kwan  <dougkwan@google.com>

        * ipa-inline.c (cgraph_mark_inline): Check
        edge->call_stmt_cannot_inline_p instead of calling
        gimple_call_cannot_inline_p.
        (cgraph_decide_inlining): Do nothing in WPA and LTRANS.
        (cgraph_gate_ipa_early_inlining): Return false if in_lto_p is set.
        (inline_generate_summary): Do nothing in LTRANS.
        * cgraph.c (initialize_inline_failed): Make sure e->call_stmt
        exists before calling gimple_call_cannot_inline_p.
        (cgraph_create_edge): Set edge->call_stmt_cannot_inline_p.
        (cgraph_clone_edge): Add argument STMT_UID.  Modify all callers.
        Update new_edge->lto_stmt_uid.
        * cgraphbuild.c (reset_inline_failed): New.

        * common.opt (fwpa): New flag.
        (fltrans): New option.
        * gcc.c (gcc_lto_option_t): New type.
        (current_lto_option): New variable.
        (lto_single_spec_function): Remove and is replaced by ..
        (lto_option_spec_function): New function.
        (LINK_COMMAND_SPEC): Use link_lto_option spec instead of just
        passing the -flto flag.
        (cc1_options): Separate non-LTO related parts into ..
        (cc1_non_lto_options): Non-LTO related options shared by all FEs.
        (lto1_options): New spec for lto FE.
        (link_lto_options): New spec for handling LTO flags in linker.
        (invoke_lto_single): Re-format to fit in 80 column.  Replace
        lto-single with lto-option.
        (static_specs): Add cc1_non_lto_options, lto1_options and
        link_lto_options.
        (static_spec_function): Replace lto-single with lto-option.
        (process_command): Handle -flto, -fwpa and -fltran by setting
        current_lto_option and not passing it to subprocess unconditionally.

2009-10-03  Bill Maddox  <maddox@google.com>

        Add `gcc' driver support for link-time code generation (LTO).

        * collect2.c (enum pass): Add new literal PASS_LTOINFO.
        (lto_flag, lto_objects, lto_o_file): New variables.
        (struct lto_object, struct lto_object_list): New structures.
        (collect_exit, handler): Remove LTO temporary output file on exit.
        (add_lto_object): New function.
        (maybe_run_lto_and_relink): New function. Perform link time code
        generation and relinking for object files containing LTO information.
        (main): Invoke maybe_run_lto_and_relink().
        (dump_argv): New function.  For debugging, currently disabled.
        (scan_prog_file): Add LTO information pass.
        * gcc.c (LINK_COMMAND_SPEC): Pass `-flto' switch to linker, i.e.,
        collect2.
        * toplev.c (compile_file): Emit assembler directive to create
        the `gnu_lto_v1' marker symbol when compiling with `-flto'.

2009-10-03  Diego Novillo  <dnovillo@google.com>

        * c.opt: Add LTO to warn_abi and warn_psabi.

        * tree.c (fld_worklist_push): Rename from PUSH.  Convert to static
        inline function.  Ignore language-specific nodes.  Update all users.
        (find_decls_types_r): Do not traverse the subtrees of
        language-specific nodes.  Do not traverse DECL_INITIAL for TYPE_DECLs.
        * tree.h (is_lang_specific): New.
        * langhooks.h (struct lang_hooks_for_decls): Remove
        may_need_assembler_name_p.  Update all users.

        * c-common.c (set_builtin_user_assembler_name): Move ...
        * builtins.c (set_builtin_user_assembler_name): ... here.
        (is_builtin_name): Add comment
        (is_builtin_fn): New.
        * except.c (output_ttype): Only call
        lookup_type_for_runtime if TYPE is not a runtime type.

        * passes.c (register_pass): Call position_pass on
        all_small_ipa_passes, all_regular_ipa_passes and all_lto_gen_passes.
        * timevar.def (TV_IPA_LTO_GIMPLE_IO): Define.
        (TV_IPA_LTO_DECL_IO): Define.
        (TV_IPA_LTO_CGRAPH_IO): Define.
        (TV_LTO): Define.
        (TV_WHOPR_WPA): Define.
        (TV_WHOPR_WPA_IO): Define.
        (TV_WHOPR_LTRANS): Define.
        (TV_WHOPR_WPA_FIXUP): Define.
        (TV_WHOPR_WPA_LTRANS_EXEC): Define.
        * tree-cfg.c (tree_node_can_be_shared): Make extern.
        * tree-flow.h (tree_node_can_be_shared): Declare.
        * tree-inline.c (tree_can_inline_p): Check that E has a
        statement associated with it.
        * tree.c (free_lang_data_in_binf): Factor out of ...
        (free_lang_data_in_type): ... here.
        Call RECORD_OR_UNION_TYPE_P.
        (need_assembler_name_p): Ignore DECL if it does not have TREE_PUBLIC
        set.  Call lang_hooks.decls.may_need_assembler_name_p if set.
        (free_lang_data_in_decl): Do not clear DECL_CONTEXT for CONST_DECLs.
        (free_lang_data): Set debug_info_level to DINFO_LEVEL_NONE.  Set
        write_symbols to NO_DEBUG.  Set debug_hooks to do_nothing_debug_hooks.
        (gate_free_lang_data): Return true if flag_generate_lto is set.
        (walk_tree_1): Call RECORD_OR_UNION_TYPE_P.
        * c-common.h (set_builtin_user_assembler_name): Move ...
        * tree.h (set_builtin_user_assembler_name): ... here.

        * common.opt (flto-report): New flag.
        * opts.c (complain_wrong_lang): Do not complain if running lto1.
        * collect2.c (scan_prog_file): Send the error output of
        'nm' to HOST_BIT_BUCKET.

2009-10-03  Ollie Wild  <aaw@google.com>

        * langhooks-def.h (lhd_begin_section): New function declaration.
        (lhd_write_section): New function declaration.
        (lhd_end_section): New function declaration.
        (LANG_HOOKS_BEGIN_SECTION): New macro.
        (LANG_HOOKS_WRITE_SECTION_DATA): New macro.
        (LANG_HOOKS_END_SECTION): New macro.
        (LANG_HOOKS_LTO): New macro.
        (LANG_HOOKS_INITIALIZER): Add LANG_HOOKS_LTO.
        * langhooks.c (output.h): Add include.
        (saved_section): New static variable.
        (lhd_begin_section): New function.
        (lhd_write_section_data): New function.
        (lhd_end_section): New function.
        * langhooks.h (struct lang_hooks_for_lto): New structure.
        (struct lang_hooks): Add member lto.
        * Makefile.in (langhooks.o): Add dependency on output.h.

        * c-opts.c (c_common_post_options): Handle -flto and -fwhopr.

2009-10-03  Richard Guenther  <rguenther@suse.de>

        * config/rs6000/rs6000.c (rs6000_output_function_epilogue):
        Handle LTO.

2009-10-03  Simon Baldwin  <simonb@google.com>
            Richard Guenther  <rguenther@suse.de>
            Janis Johnson  <janis187@us.ibm.com>
            Doug Kwan  <dougkwan@google.com>
            Diego Novillo  <dnovillo@google.com>
            Ramana Radhakrishnan  <ramana.r@gmail.com>
            Ollie Wild  <aaw@google.com>

        * doc/install.texi: Add documentation for libelf and --enable-lto.
        * doc/invoke.texi: Document -fwpa, -flto, -fwhopr, -fltrans,
        -flto-report, -flto-compression-level and -use-linker-plugin.
        * doc/sourcebuild.texi: Document use of zlib.  Document lto-plugin.
        Add section for LTO Testing.

2009-10-02  Cary Coutant  <ccoutant@google.com>

        Add support for comdat type sections for DWARF v4.
        Merge from dwarf4 branch.

        * dwarf2out.c (DWARF_TYPE_SIGNATURE_SIZE): New constant.
        (dw_die_ref): Define vector type.
        (enum dw_val_class): Add dw_val_class_data8.
        (struct dw_val_struct): Add v.val_data8.
        (comdat_type_node_ref): New type.
        (struct die_struct): Move die_symbol into a union; add new field
        die_type_node.  Change all uses.
        (comdat_type_node): New type.
        (skeleton_chain_node): New type.
        (DWARF_COMDAT_TYPE_UNIT_HEADER_SIZE): New constant.
        (comdat_type_list): New variable.
        (dwarf_tag_name): Add DW_TAG_type_unit.
        (dwarf_attr_name): Add DW_AT_signature.
        (add_AT_data8): New function.
        (replace_child): New function.
        (move_all_children): New function.
        (print_signature): New function.
        (print_die): Print signature information; add dw_val_class_data8.
        (attr_checksum): Support dw_val_class_data8.
        (CHECKSUM_STRING): Redefine for DWARF-4 to include trailing NULL byte.
        (CHECKSUM_SLEB128, CHECKSUM_ULEB128): New macros.
        (checksum_sleb128, checksum_uleb128): New functions.
        (checksum_die_context): New function.
        (loc_checksum_ordered): New function.
        (attr_checksum_ordered): New function.
        (struct checksum_attributes): New structure.
        (collect_checksum_attributes): New function.
        (die_checksum_ordered): New function.
        (generate_type_signature): New function.
        (same_dw_val_p): Add dw_val_class_data8.
        (is_symbol_die): Use new is_declaration_die function.
        (is_declaration_die): New function.
        (should_move_die_to_comdat): New function.
        (clone_die): New function.
        (clone_tree): New function.
        (clone_as_declaration): New function.
        (copy_declaration_context): New function.
        (generate_skeleton_ancestor_tree): New function.
        (generate_skeleton_bottom_up): New function.
        (generate_skeleton): New function.
        (remove_child_or_replace_with_skeleton): New function.
        (break_out_comdat_types): New function.
        (struct decl_table_entry): New type.
        (htab_decl_hash): New function.
        (htab_decl_eq): New function.
        (htab_decl_del): New function.
        (copy_ancestor_tree): New function.
        (copy_decls_walk): New function.
        (copy_decls_for_unworthy_types): New function.
        (build_abbrev_table): Don't assert on missing die_symbol when doing
        comdat type sections.
        (size_of_die): Use DW_FORM_sig8 for external references.  Add
        dw_val_class_data8.
        (unmark_dies): Don't assert for unmarked dies when doing comdat
        type sections.
        (value_format): Support DW_FORM_sig8 and dw_val_class_data8.
        (output_signature): New function.
        (output_die): Likewise.
        (output_compilation_unit_header): Mark output as DWARF version 3
        even if generating DWARF 4.
        (output_comdat_type_unit): New function.
        (output_line_info): Mark output as DWARF version 3 even if generating
        DWARF 4.
        (dwarf2out_start_source_file): Don't do eliminate_dwarf2_dups with
        DWARF-4.
        (dwarf2out_end_source_file): Likewise.
        (prune_unused_types_walk_attribs): Don't follow references into
        comdat type sections.
        (prune_unused_types_mark): When generating type units, do not mark
        children of non-defining declarations of types; do mark children of
        type entries.
        (prune_unused_types): Process comdat type sections.
        (htab_ct_hash): New function.
        (htab_ct_eq): New function.
        (dwarf2out_finish): Move types to comdat sections when using DWARF-4.
        Add a pointer to the line table from type unit entries so
        DW_AT_decl_file has meaning.
        * varasm.c (default_elf_asm_named_section): Use identifier name as
        comdat key instead of lang hook.

2009-10-02  Neil Vachharajani  <nvachhar@google.com>

        * gcov-io.c (gcov_open): Open files read-only when MODE < 0.

2009-10-02  Uros Bizjak  <ubizjak@gmail.com>

        * config/i386/i386.md (SWIM248): New mode iterator.
        (divmod<mode>4) Macroize expander from divmoddi4, divmodsi4 and
        divmodhi4 patterns using SWIM248 macro.
        (*divmod<mode>4): Macroize insn_and_split pattern from
        *divmoddi4_cltd_rex64, *divmodsi4_cltd and divmodhi4 insn patterns
        and their corresponding splitters usign SWIM248 macro.  Split SImode
        insn to generate cltd and DImode insn to generate cqto instead of
        move+shift when optimizing for size or TARGET_USE_CLTD is in effect.
        (*divmoddi4_nocltd_rex64, *divmodsi4_nocltd): Remove insn patterns.
        (*divmod<mode>4_noext): Macroize insn from *divmoddi_noext_rex64 and
        *divmodsi_noext patterns using SWIM248 macro.
        (udivmod<mode>4): Macroize expander from udivmoddi4, udivmodsi4 and
        udivmodhi4 patterns using SWIM248 macro.
        (*udivmod<mode>4): Macroize insn_and_split pattern from
        *udivmoddi4, udivmodsi4 and udivmodhi4 patterns and their
        corresponding splitters using SWIM248 macro.
        (*udivmod<mode>4_noext): Macroize insn from *udivmoddi4_noext,
        *udivmodsi4_noext and *udivmodhi_noext patterns using SWIM248 macro.

2009-10-02  Eric Botcazou  <ebotcazou@adacore.com>

        * stor-layout.c (layout_type) <ARRAY_TYPE>: Make sure that an array