re PR rtl-optimization/52208 (Useless store)

[gcc.git] / gcc / ChangeLog

2012-02-16  Jakub Jelinek  <jakub@redhat.com>

        PR rtl-optimization/52208
        * ira-costs.c (scan_one_insn): Don't decrease mem_cost
        for MEMs with REG_EQUIV, if the MEM isn't general_operand.

        PR tree-optimization/52255
        * tree-vect-loop-manip.c (slpeel_tree_peel_loop_to_edge): If
        loop->header has virtual PHI, but exit_e->dest doesn't, add
        virtual PHI to exit_e->dest and adjust all uses after the loop.

        PR debug/52260
        * dwarf2out.c (copy_decls_walk): Fill in *slot before traversing
        children with clone_tree_hash, not after it.

2012-02-16  Iain Sandoe  <iains@gcc.gnu.org>

        * config/darwin.h (ASM_OUTPUT_LABELREF): Add user label prefix for
        extended identifiers.

2012-02-16  Jakub Jelinek  <jakub@redhat.com>

        PR middle-end/51929
        * cgraphunit.c (verify_edge_corresponds_to_fndecl): If node is
        a same_body_alias, also test whether e->callee isn't a former
        or current clone of the decl this is a same body alias of.

        PR translation/52264
        * cgraphunit.c (verify_cgraph_node): Fix a typo.

2012-02-15  Sandra Loosemore  <sandra@codesourcery.com>

        * doc/invoke.texi: Clean up "n-bit/byte/word" modifiers.

2012-02-15  Michael Meissner  <meissner@linux.vnet.ibm.com>

        PR target/52199
        * config/rs6000/rs6000.c (rs6000_expand_vector_init): Use
        force_reg instead of copy_to_reg for better optimization.  Force
        non-register or memory operands into a register.

2012-02-15  Andrew MacLeod  <amacleod@redhat.com>

        * extend.texi: Reserve upper bits of memory model for future use.

2012-01-15  Georg-Johann Lay  <avr@gjlay.de>
            Anatoly Sokolov <aesok@post.ru>
            Eric Weddington <eric.weddington@atmel.com>

        PR target/52261
        * config/avr/avr-devices.c (avr_arch_types): Add avrxmega2,
        avrxmega4, avrxmega5, avrxmega6, avrxmega7.
        Rewrite initializers for .macro.
        * config/avr/avr-mcus.def (AVR_MCU): Add known MCUs:
        avrxmega2: atxmega16a4, atxmega16d4, atxmega16x1, atxmega32a4
        atxmega32d4, atxmega32x1.
        avrxmega4: atxmega64a3, atxmega64d3.
        avrxmega5: atxmega64a1, atxmega64a1u.
        avrxmega6: atxmega128a3, atxmega128d3, atxmega192a3, atxmega192d3,
        atxmega256a3, atxmega256a3b, atxmega256a3bu, atxmega256d3.
        avrxmega7: atxmega128a1, atxmega128a1u.
        * config/avr/avr.h (enum avr_arch): Add: ARCH_AVRXMEGA2,
        ARCH_AVRXMEGA4, ARCH_AVRXMEGA5, ARCH_AVRXMEGA6, ARCH_AVRXMEGA7.
        (struct base_arch_s): Rename reserved to xmega_p.
        Rename reserved2 to have_rampd.
        (AVR_XMEGA): New define.
        (AVR_HAVE_RAMPD, AVR_HAVE_RAMPX, AVR_HAVE_RAMPY): New defines.
        (AVR_HAVE_RAMPZ): Change definition to fit xmega.
        * config/avr/predicates.md (io_address_operand): Take into
        account SFR offset.
        (low_io_address_operand): Ditto.
        (high_io_address_operand): Ditto.
        * config/avr/avr.md (isa): Add alternatives no_xmega, xmega.
        (enabled, movhi_sp_r): Use them.
        * config/avr/avr-c.c (avr_cpu_cpp_builtins): Use
        cpp_define_formatted to built-in define __AVR_ARCH__.
        (__AVR_XMEGA__): New built-in define.
        (__AVR_HAVE_RAMPD__): New built-in define.
        (__AVR_HAVE_RAMPX__): New built-in define.
        (__AVR_HAVE_RAMPY__): New built-in define.
        (__AVR_HAVE_RAMPZ__): Change condition when to built-in define it.

        * config/avr/avr.c (avr_addr_t): Add ccp, rampd, rampx, rampy.
        (avr_option_override): Initialize them.
        (sreg_rtx, rampd_rtx, rampx_rtx, rampy_rtx): New GTY rtx.
        (avr_init_expanders): Initialize them. No more block several calls.
        (emit_push_sfr): New static function.
        (avr_prologue_setup_frame): Use it to push SREG, RAMPD/X/Y/Z as needed.
        Handle AVR_XMEGA.
        (expand_epilogue): Handle AVR_XMEGA. Pop RAMPD/X/Y/Z as needed.
        (avr_print_operand): Print addreeses as symbols for
        RAMPX, RAMPY, RAMPD, CCP.
        (output_movhi): Handle AVR_XMEGA when writing to SP.
        (avr_out_movhi_mr_r_xmega): New static function.
        (out_movhi_mr_r): Forward to avr_out_movhi_mr_r_xmega for AVR_XMEGA.
        (avr_file_start): Print symbol defines for __RAMPX__,  __RAMPY__,
        __RAMPD__,  __CCP__ as needed.

        * config/avr/multilib.h: Regenerate.
        * config/avr/t-multilib: Regenerate.
        * config/avr/avr-tables.opt: Regenerate.

2012-02-15  Tobias Grosser <grosser@fim.uni-passau.de>

        PR tree-optimization/50561
        * graphite-flattening.c (lst_project_loop): Do not
        remove old scattering dimensions after flattening.
        (lst_do_flatten): Likewise.

2012-02-15  Georg-Johann Lay  <avr@gjlay.de>

        * doc/extend.texi (AVR Built-in Functions): Remove doc for
        __builtin_avr_map8, __builtin_avr_map16.
        Document __builtin_avr_insert_bits.

        * config/avr/avr.md (map_bitsqi, map_bitshi): Remove.
        (insert_bits): New insn.
        (adjust_len.map_bits): Rename to insert_bits.
        (UNSPEC_MAP_BITS): Rename to UNSPEC_INSERT_BITS.
        * avr-protos.h (avr_out_map_bits): Remove.
        (avr_out_insert_bits, avr_has_nibble_0xf): New.
        * config/avr/constraints.md (Cxf,C0f): New.
        * config/avr/avr.c (avr_cpu_cpp_builtins): Remove built-in
        defines __BUILTIN_AVR_MAP8, __BUILTIN_AVR_MAP16.
        New built-in define __BUILTIN_AVR_INSERT_BITS.
        * config/avr/avr.c (TARGET_FOLD_BUILTIN): New define.
        (enum avr_builtin_id): Add AVR_BUILTIN_INSERT_BITS.
        (avr_move_bits): Rewrite.
        (avr_fold_builtin, avr_map_metric, avr_map_decompose): New static
        functions.
        (avr_map_op_t): New typedef.
        (avr_map_op): New static variable.
        (avr_out_insert_bits, avr_has_nibble_0xf): New functions.
        (adjust_insn_length): Handle ADJUST_LEN_INSERT_BITS.
        (avr_init_builtins): Add definition for __builtin_avr_insert_bits.
        (bdesc_3arg, avr_expand_triop_builtin): New.
        (avr_expand_builtin): Use them. And handle AVR_BUILTIN_INSERT_BITS.
        (avr_revert_map, avr_swap_map, avr_id_map, avr_sig_map): Remove.
        (avr_map_hamming_byte, avr_map_hamming_nonstrict): Remove.
        (avr_map_equal_p, avr_map_sig_p): Remove.
        (avr_out_swap_bits, avr_out_revert_bits, avr_out_map_bits): Remove.
        (bdesc_2arg): Remove AVR_BUILTIN_MAP8, AVR_BUILTIN_MAP16.
        (adjust_insn_length): Remove handling for ADJUST_LEN_MAP_BITS.
        (enum avr_builtin_id): Remove AVR_BUILTIN_MAP8, AVR_BUILTIN_MAP16.
        (avr_init_builtins): Remove __builtin_avr_map8, __builtin_avr_map16.
        (avr_expand_builtin): Remove AVR_BUILTIN_MAP8, AVR_BUILTIN_MAP16.

2012-02-14  Bernd Schmidt  <bernds@codesourcery.com>

        * config/c6x/c6x.md (reserve_cycles): New attribute.
        * config/c6x/c6x.c (c6x_sched_reorder_1): Ensure insns we predicate
        don't reserve functional units after the branch occurs.

2012-02-14  Aldy Hernandez  <aldyh@redhat.com>

        PR middle-end/52142
        * ipa-inline.c (can_inline_edge_p): Do not inline tm_pure
        functions into non-tm_pure functions.

2012-02-14  Eric Botcazou  <ebotcazou@adacore.com>

        PR lto/52178
        * gimple.c (iterative_hash_gimple_type): Use RECORD_OR_UNION_TYPE_P.
        (iterative_hash_canonical_type): Likewise.
        * tree-ssa-pre.c (fini_pre): Clean up the CFG only after purging all
        the dead edges.

2012-02-14  Bernd Schmidt  <bernds@codesourcery.com>

        * haifa-sched.c (prune_ready_list): Ensure that if there is a
        sched-group insn, it either remains alone or the entire list is
        pruned.

2012-02-14  Jonathan Wakely  <jwakely.gcc@gmail.com>

        * doc/install.texi (Prerequisites): Fix grammar.
        (Configuration): Likewise.

2012-02-14  Jonathan Wakely  <jwakely.gcc@gmail.com>

        * doc/install.texi (Prerequisites): Suggest building GMP, MPFR and
        MPC as part of GCC before describing configuring with --with-gmp etc.
        (Installing GCC: Configuration): --with-gmp etc. aren't needed if
        sources are present.

2012-02-14  Jakub Jelinek  <jakub@redhat.com>

        PR debug/51950
        * dwarf2out.c (clone_tree_hash): New function.
        (copy_decls_walk): Use it instead of clone_tree.

2012-02-14  Richard Guenther  <rguenther@suse.de>

        PR tree-optimization/52244
        PR tree-optimization/51528
        * tree-sra.c (analyze_access_subtree): Only create INTEGER_TYPE
        replacements for integral types.

2012-02-14  Walter Lee  <walt@tilera.com>

        * config.gcc: Handle tilegx and tilepro.
        * configure.ac (gcc_cv_as_dwarf2_debug_line): Enable test for
        tilegx and tilepro.
        Add HAVE_AS_TLS check for tilegx and tilepro.
        * configure: Regenerate.
        * doc/contrib.texi: Add Mat Hostetter and self.
        * doc/extend.texi (TILE-Gx Built-in Functions): New node.
        Document instruction intrinsics and network accessing intrinsics.
        (TILEPro Built-in Functions): New node.  Document instruction
        intrinsics and network accessing intrinsics.
        * doc/install.texi (Specific, tilegx-*-linux*): Document it.
        (Specific, tilepro-*-linux*): Likewise.
        * doc/invoke.texi (TILE-Gx Options): New section.
        (TILEPro Options): New section.
        * doc/md.texi (TILE-Gx): New section.
        (TILEPro): New section.
        * common/config/tilegx/tilegx-common.c: New file.
        * common/config/tilepro/tilepro-common.c: New file.
        * config/tilegx/constraints.md: New file.
        * config/tilegx/linux.h: New file.
        * config/tilegx/mul-tables.c: New file.
        * config/tilegx/predicates.md: New file.
        * config/tilegx/sync.md: New file.
        * config/tilegx/t-tilegx: New file.
        * config/tilegx/tilegx-builtins.h: New file.
        * config/tilegx/tilegx-c.c: New file.
        * config/tilegx/tilegx-generic.md: New file.
        * config/tilegx/tilegx-modes.def: New file.
        * config/tilegx/tilegx-multiply.h: New file.
        * config/tilegx/tilegx-protos.h: New file.
        * config/tilegx/tilegx.c: New file.
        * config/tilegx/tilegx.h: New file.
        * config/tilegx/tilegx.md: New file.
        * config/tilegx/tilegx.opt: New file.
        * config/tilepro/constraints.md: New file.
        * config/tilepro/gen-mul-tables.cc: New file.
        * config/tilepro/linux.h: New file.
        * config/tilepro/mul-tables.c: New file.
        * config/tilepro/predicates.md: New file.
        * config/tilepro/t-tilepro: New file.
        * config/tilepro/tilepro-builtins.h: New file.
        * config/tilepro/tilepro-c.c: New file.
        * config/tilepro/tilepro-generic.md: New file.
        * config/tilepro/tilepro-modes.def: New file.
        * config/tilepro/tilepro-multiply.h: New file.
        * config/tilepro/tilepro-protos.h: New file.
        * config/tilepro/tilepro.c: New file.
        * config/tilepro/tilepro.h: New file.
        * config/tilepro/tilepro.md: New file.
        * config/tilepro/tilepro.opt: New file.

2012-02-14  Jakub Jelinek  <jakub@redhat.com>

        PR tree-optimization/52210
        * tree-vect-slp.c (vect_get_and_check_slp_defs): Call
        vect_model_simple_cost with two entry vect_def_type array instead
        of an address of dt.

2012-02-14  Richard Guenther  <rguenther@suse.de>

        PR lto/52178
        * tree-streamer-in.c (lto_input_ts_field_decl_tree_pointers):
        Do not stream DECL_QUALIFIER.
        * tree-streamer-out.c (write_ts_field_decl_tree_pointers): Likewise.
        * tree.c (free_lang_data_in_decl): Free DECL_QUALIFIER.
        (find_decls_types_r): Do not walk DECL_QUALIFIER.

2012-02-14  Jakub Jelinek  <jakub@redhat.com>

        PR c/52181
        * c-decl.c (merge_decls): Copy DECL_USER_ALIGN bit from olddecl to
        newdecl.

2012-02-13  Jakub Jelinek  <jakub@redhat.com>

        PR bootstrap/52172
        * cselib.h (cselib_subst_to_values_from_insn): New prototype.
        * cselib.c (cselib_subst_to_values_from_insn): New function.
        * sched-deps.c (add_insn_mem_dependence,
        sched_analyze_1, sched_analyze_2): Use it.

2012-02-13  Jan Hubicka  <jh@suse.cz>

        PR middle-end/52214
        * predict.c (predict_paths_for_bb): Fix thinko in prevoius patch.

2012-02-13  Eric Botcazou  <ebotcazou@adacore.com>

        * gcc.c (LINK_COMMAND_SPEC): Deal with -fgnu-tm.
        (GTM_SELF_SPECS): Define if not already defined.
        (driver_self_specs): Add GTM_SELF_SPECS.
        * config/darwin.h (LINK_COMMAND_SPEC_A): Deal with -fgnu-tm.
        (GTM_SELF_SPECS): Define.
        * config/i386/cygwin.h (GTM_SELF_SPECS): Likewise.
        * config/i386/mingw32.h (GTM_SELF_SPECS): Likewise.

2012-02-13  Jakub Jelinek  <jakub@redhat.com>

        * cselib.c (expand_loc): Return sp, fp, hfp or cfa base reg right
        away if seen.

        * cselib.c (dump_cselib_val): Don't assume l->setting_insn is
        non-NULL.

        PR middle-end/52230
        * omp-low.c (expand_omp_for): If a static schedule without
        chunk size has NULL region->cont, force fd.chunk_size to be
        integer_zero_node.

2012-02-13  Andrew MacLeod  <amacleod@redhat.com>

        PR c/52190
        * doc/extend.texi : Fix another __atomic_compare_exchange typo.

2012-02-13  Richard Guenther  <rguenther@suse.de>

        PR translation/52211
        * passes.c (enable_disable_pass): Fix typo.

2012-02-13  Jakub Jelinek  <jakub@redhat.com>

        PR middle-end/52209
        * expr.c (expand_expr_real_2) <case BIT_NOT_EXPR>: Only expand using
        XOR for reduce_bit_field if type is unsigned.

2012-02-12  Eric Botcazou  <ebotcazou@adacore.com>

        * config/sparc/sparc.h (CANNOT_CHANGE_MODE_CLASS): In 64-bit mode,
        disallow changes from SFmode to mode with different size in FP regs.

2012-02-12  Robert Millan  <rmh@gnu.org>
            Gerald Pfeifer <gerald@pfeifer.com>

        * ginclude/stddef.h [__FreeBSD_kernel__] (__size_t): Do not define.
        Tweak comment.

2012-02-11  Richard Sandiford  <rdsandiford@googlemail.com>

        PR rtl-optimization/52175
        * reorg.c (fill_slots_from_thread): Don't apply add/sub optimization
        to frame-related instructions.

2012-02-10  Jason Merrill  <jason@redhat.com>

        PR c++/51910
        * tlink.c (demangled_hash_entry): Change mangled to a VEC.
        (demangle_new_symbols): Fill it.
        (scan_linker_output): Walk it.
        (start_tweaking): Split out from scan_linker_output.
        (maybe_tweak): Update sym->chosen.
        * Makefile.in (COLLECT2_OBJS): Add vec.o and gcc-none.o

2012-02-11  Jakub Jelinek  <jakub@redhat.com>

        PR debug/52132
        * reg-stack.c (subst_stack_regs_in_debug_insn): Don't use
        get_true_reg.

2012-02-11  Uros Bizjak  <ubizjak@gmail.com>

        * compare-elim.c (find_comparisons_in_bb): Eliminate only compares
        having the same mode as previous compare.

2012-02-10  Eric Botcazou  <ebotcazou@adacore.com>

        * config/sparc/sparc.c (sparc_flat_expand_prologue): Use emit_use.
        * config/sparc/sparc.md (UNSPECV_GOTO): Delete.
        (nonlocal_goto_internal): Likewise.
        (nonlocal_goto): Emit a use and an indirect jump directly.

2012-02-10  Andrew MacLeod  <amacleod@redhat.com>

        PR c/52190
        * doc/extend.texi : Update comments for __atomic_compare_exchange and
        __atomic_{is,always}_lock_free.

2012-02-10  Uros Bizjak  <ubizjak@gmail.com>

        PR target/52146
        * config/i386/i386.c (ix86_legitimate_address_p): Disallow
        negative constant address for x32.

2012-02-10  Richard Henderson  <rth@redhat.com>

        * tree-ssa-dce.c (propagate_necessity): Handle GIMPLE_TRANSACTION.
        * tree-ssa-operands.c (parse_ssa_operands): Add virtual operands
        for GIMPLE_TRANSACTION.  Tidy if's into a switch.

2012-02-10  Bill Schmidt  <wschmidt@linux.vnet.ibm.com>
            Ira Rosen  <irar@il.ibm.com>

        PR tree-optimization/50031
        * targhooks.c (default_builtin_vectorization_cost): Handle
        vec_promote_demote.
        * target.h (enum vect_cost_for_stmt): Add vec_promote_demote.
        * tree-vect-loop.c (vect_get_single_scalar_iteraion_cost): Handle
        all types of reduction and pattern statements.
        (vect_estimate_min_profitable_iters): Likewise.
        * tree-vect-stmts.c (vect_model_promotion_demotion_cost): New function.
        (vect_get_load_cost): Use vec_perm for permutations; add dump logic
        for explicit realigns.
        (vectorizable_conversion): Call vect_model_promotion_demotion_cost.
        * config/spu/spu.c (spu_builtin_vectorization_cost): Handle
        vec_promote_demote.
        * config/i386/i386.c (ix86_builtin_vectorization_cost): Likewise.
        * config/rs6000/rs6000.c (rs6000_builtin_vectorization_cost): Update
        vec_perm for VSX and handle vec_promote_demote.

2012-02-10  Jakub Jelinek  <jakub@redhat.com>

        PR middle-end/52177
        * builtins.c (fold_builtin_atomic_always_lock_free,
        expand_builtin_atomic_always_lock_free,
        fold_builtin_atomic_is_lock_free, expand_builtin_atomic_is_lock_free):
        Return and/or test boolean_true_node/boolean_false_node instead of
        integer_one_node/integer_zero_node.

2012-02-10  Jan Hubicka  <jh@suse.cz>

        PR middle-end/48600
        * predict.c (predict_paths_for_bb): Prevent looping.
        (predict_paths_leading_to_edge, predict_paths_leading_to): Update.

2012-02-10  Roman Zhuykov  <zhroma@ispras.ru>

        * config/arm/arm.c (output_move_double): In one case properly
        count number of instructions that will be emitted.

2012-02-10  Richard Guenther  <rguenther@suse.de>

        PR translation/52193
        * cgraphunit.c (cgraph_mark_functions_to_output): Fix typo.

2012-02-09  Peter Bergner  <bergner@vnet.ibm.com>

        PR middle-end/52140
        * dojump.c (do_compare_rtx_and_jump): Use SCALAR_FLOAT_MODE_P.

2012-02-09  Jakub Jelinek  <jakub@redhat.com>

        PR debug/52165
        * var-tracking.c (emit_note_insn_var_location): If
        EMIT_NOTE_BEFORE_INSN and insn is NOTE_INSN_CALL_ARG_LOCATION,
        emit it before next non-NOTE_INSN_CALL_ARG_LOCATION
        non-NOTE_DURING_CALL_P insn.

2012-02-09  Bin Cheng  <bin.cheng@arm.com>

        PR middle-end/51867
        * builtins.c (expand_builtin): Don't check DECL_ASSEMBLER_NAME_SET_P.

2012-02-08  Magnus Granberg  <zorry@gentoo.org>

        PR driver/48524
        * gcc.c (switch_matches) Support switches with separated form,
        -D and -U.

2012-02-08  Georg-Johann Lay  <avr@gjlay.de>

        * config/avr/avr.md (SREG_ADDR): Remove constant definition.
        (SP_ADDR): Ditto.
        (RAMPZ_ADDR): Ditto.
        * config/avr/avr.c (avr_addr_t): New typedef.
        (avr_addr): New struct to hold RAM address of SPL, SPH, RAMPZ, SREG.
        (avr_init_expanders): Initialize it.
        (expand_prologue): Use avr_addr instead of RAMPZ_ADDR, SP_ADDR,
        SREG_ADDR.
        (expand_epilogue): Ditto.
        (avr_print_operand): Ditto.
        (avr_file_start): Ditto.
        (avr_emit_movmemhi): Ditto.

2012-02-08  Richard Guenther  <rguenther@suse.de>

        PR tree-optimization/46886
        * tree-flow.h (do_while_loop_p): Declare.
        * tree-ssa-loop-ch.c (do_while_loop_p): Export.
        * tree-parloops.c (parallelize_loops): Only parallelize do-while loops.

2012-02-08  Andrew MacLeod  <amacleod@redhat.com>

        * optabs.c (expand_atomic_load): Do not assume compare_and_swap will
        always succeed for integers larger than a native word.

2012-02-08  Richard Guenther  <rguenther@suse.de>

        PR rtl-optimization/52170
        * simplify-rtx.c (simplify_plus_minus): Use CONSTM1_RTX to
        properly handle integer vector modes.

2012-02-08  Jakub Jelinek  <jakub@redhat.com>

        PR gcov-profile/52150
        * coverage.c: Include target.h.
        (build_var): Call targetm.strip_name_encoding on the assembler name.
        Change one _ into . or $ if the target allows it.
        * Makefile.in (coverage.o): Depend on $(TARGET_H).

        PR rtl-optimization/52139
        * cfgrtl.c (cfg_layout_merge_blocks): If BB_END
        is a BARRIER after emit_insn_after_noloc, move BB_END
        to the last non-BARRIER insn before it.

2012-02-07  Richard Sandiford  <rdsandiford@googlemail.com>

        PR middle-end/24306
        * config/mips/mips.c (mips_std_gimplify_va_arg_expr): New function.
        (mips_gimplify_va_arg_expr): Call it instead of
        std_gimplify_va_arg_expr.

2012-02-07  Michael Meissner  <meissner@linux.vnet.ibm.com>

        * config/rs6000/rs6000.c (rs6000_trampoline_init): Fix error
        message for -mno-pointers-to-nested-function.

2012-02-07  Eric Botcazou  <ebotcazou@adacore.com>

        PR middle-end/51994
        * expr.c (get_inner_reference): If there is an offset, add a negative
        bit position to it (if any).

2012-02-07  Jakub Jelinek  <jakub@redhat.com>

        PR rtl-optimization/52060
        * combine.c (try_combine): Add i0src_copy and i0src_copy2 variables,
        copy i1src to i1src_copy whenever added_sets_2 && i1_feeds_i2_n already
        before i1dest -> i1src substitution in newpat, copy i0src to i0src_copy
        and/or i0src_copy2 when needed.

2012-02-07  Jakub Jelinek  <jakub@redhat.com>

        * gcc.c (main): Don't look for lto-wrapper or lto-wrapper
        or LTOPLUGINSONAME if have_c.

        * config/freebsd-spec.h: Add comment about what macros can be defined
        in this header.
        (LINK_EH_SPEC, LINK_SSP_SPEC, USE_LD_AS_NEEDED): Don't define here.
        * config/freebsd.h (LINK_EH_SPEC, LINK_SSP_SPEC, USE_LD_AS_NEEDED): But
        here instead.

2012-02-07  Richard Guenther  <rguenther@suse.de>

        * gimple-pretty-print.c (dump_gimple_phi): Avoid excessive
        newline in -alias dumps.

2012-02-07  Kai Tietz  <ktietz@redhat.com>
            Dave Korn  <dave.korn.cygwin@gmail.com>

        PR target/40068
        * config/i386/winnt-cxx.c (i386_pe_adjust_class_at_definition):
        Take care that typinfo gets dllexport-attribute.

2012-02-07  Jakub Jelinek  <jakub@redhat.com>

        PR middle-end/52074
        * expr.c (expand_expr_addr_expr_1): For CONSTANT_CLASS_P or CONST_DECL
        if modifier < EXPAND_SUM call force_operand on the result.

2012-02-07  Joern Rennecke  <joern.rennecke@embecosm.com>

        * config/epiphany/epiphany.h (ASM_DECLARE_FUNCTION_SIZE): Redefine,
        adding __forwarder_dst__ prefix if a forwarder_section attribute is
        present.
        (epiphany_function_type): Replace types for specific interrupts with
        EPIPHANY_FUNCTION_INTERRUPT.
        (EPIPHANY_INTERRUPT_P): Update.
        * config/epiphany/epiphany.c (epiphany_handle_forwarder_attribute):
        New static function.
        (epiphany_attribute_table) <interrupt>: min_len is 0, max_len is 9.
        <disinterrupt>: Affects type identity.
        (epiphany_handle_interrupt_attribute): Handle variable number of
        arguments.
        (epiphany_compute_function_type): Update for new
        epiphany_function_type definition.
        (epiphany_expand_prologue): Don't save (reg:DI GPR_0) for interrupt
        handlers with a longcall forwarder.
        (epiphany_start_function): Handle multiple interrupt arguments and/or
        forwarder_section attribute.

        * config/epiphany/epiphany.h (LIB_SPEC): Link libc again after
        libgloss.

2012-02-07  Alan Modra  <amodra@gmail.com>

        PR target/52107
        * config/rs6000/rs6000.c (rs6000_emit_move): Don't create DImode
        subregs of TFmode.

2012-02-06  Bill Schmidt  <wschmidt@linux.vnet.ibm.com>

        PR tree-optimization/50969
        * tree-vect-stmts.c (vect_model_store_cost): Correct statement cost to
        use vec_perm rather than vector_stmt.
        (vect_model_load_cost): Likewise.
        * config/i386/i386.c (ix86_builtin_vectorization_cost): Change cost of
        vec_perm to be the same as other vector statements.
        * config/rs6000/rs6000.c (rs6000_builtin_vectorization_cost): Revise
        cost of vec_perm for TARGET_VSX.

2012-02-06  Richard Guenther  <rguenther@suse.de>

        PR tree-optimization/52115
        * tree-sra.c (access_has_replacements_p): New function.
        (sra_modify_assign): Use it to decide whether a use is uninitialized.

2012-02-06  Patrick Marlier  <patrick.marlier@gmail.com>

        PR middle-end/52047
        * trans-mem.c (expand_call_tm): Add an assertion.
        * calls.c (flags_from_decl_or_type): Add ECF_TM_PURE to 'no vops'
        functions.

2012-02-06  Richard Guenther  <rguenther@suse.de>

        PR tree-optimization/50955
        * tree-ssa-loop-ivopts.c (get_computation_cost_at): Artificially
        raise cost of expressions that replace an address with an
        expression based on a different pointer.

2012-02-06  Jakub Jelinek  <jakub@redhat.com>

        PR target/52129
        * calls.c (mem_overlaps_already_clobbered_arg_p): If val is
        CONST_INT_P, subtract resp. add crtl->args.pretend_args_size to it.

2012-02-06  Jonathan Wakely  <jwakely.gcc@gmail.com>

        PR c++/48680
        * doc/invoke.texi (C++ Dialect Options): Use @option markup for
        -Weffc++ and specify guidelines come from second edition.

2012-02-05  Richard Sandiford  <rdsandiford@googlemail.com>

        * config/mips/mips.md (sibcall_internal, sibcall_value_internal)
        (sibcall_value_multiple_internal, call_split, call_internal_direct)
        (call_direct_split, call_value_split, call_value_internal_direct)
        (call_value_direct_split, call_value_multiple_split): Use jal and
        jal_macro attributes.

2012-02-05  Richard Sandiford  <rdsandiford@googlemail.com>

        * reload1.c (reload_regs_reach_end_p): Replace with...
        (reload_reg_rtx_reaches_end_p): ...this function.
        (new_spill_reg_store): Update commentary.
        (emit_input_reload_insns): Don't clear new_spill_reg_store here.
        (emit_output_reload_insns): Check reload_reg_rtx_reaches_end_p
        before setting new_spill_reg_store.
        (emit_reload_insns): Use a separate loop to clear new_spill_reg_store.
        Use reload_reg_rtx_reaches_end_p instead of reload_regs_reach_end_p.
        Also use reload_reg_rtx_reaches_end_p when reading new_spill_reg_store
        for non-spill reload registers.

2012-02-05  Ira Rosen  <irar@il.ibm.com>

        PR tree-optimization/52091
        * tree-vectorizer.h (vect_is_simple_use): Add an argument.
        (vect_is_simple_use_1): Likewise.
        * tree-vect-loop.c (vectorizable_reduction): Update calls
        to vect_is_simple_use_1 and vect_is_simple_use.
        (vectorizable_live_operation): Likewise.
        * tree-vect-patterns.c (widened_name_p,
        vect_recog_vector_vector_shift_pattern, check_bool_pattern): Likewise.
        * tree-vect-stmts.c (process_use, vect_get_vec_def_for_operand,
        vectorizable_call, vectorizable_conversion, vectorizable_assignment,
        vectorizable_shift,vectorizable_operation, vectorizable_store,
        vectorizable_load): Likewise.
        (vect_is_simple_cond): Add an argument, pass it to
        vect_is_simple_use_1.
        (vectorizable_condition): Update calls to vect_is_simple_cond,
        vect_is_simple_use.
        (vect_is_simple_use): Add an argument, the statement in which
        OPERAND is used.  Check that if OPERAND's def stmt is a double
        reduction phi node, the use is a phi node too.
        (vect_is_simple_use_1): Add an argument, pass it to
        vect_is_simple_use.
        * tree-vect-slp.c (vect_get_and_check_slp_defs): Update a call
        to vect_is_simple_use.

2012-02-04  Jakub Jelinek  <jakub@redhat.com>

        PR rtl-optimization/52095
        * modulo-sched.c (dump_insn_locator): New function.
        (loop_canon_p, sms_schedule): Use it.

        PR rtl-optimization/52113
        * lower-subreg.c (decompose_multiword_subregs): Call recog_memoized
        even for decomposable shift/zext insns.

2012-02-03  Jakub Jelinek  <jakub@redhat.com>
            Zdenek Dvorak  <ook@ucw.cz>

        PR rtl-optimization/52092
        * loop-unswitch.c (unswitch_single_loop): Call copy_rtx_if_shared
        on get_iv_value result.

2012-02-02  Andrew Pinski  <apinski@cavium.com>

        PR middle-end/47982
        PR middle-end/43967
        * doc/libgcc.texi (__udivmoddi4/__udivmodti4): Fix documentation typo.

2012-02-02  Jakub Jelinek  <jakub@redhat.com>

        PR middle-end/48071
        * diagnostic.c (diagnostic_finish): Remove trailing newlines.

2012-02-02  Vladimir Makarov  <vmakarov@redhat.com>

        PR rtl-optimization/49800
        * haifa-sched.c (sched_init): Call regstat_init_n_sets_and_refs.
        (sched_finish): Call regstat_free_n_sets_and_refs.

2012-02-02  Jia Liu  <proljc@gmail.com>

        * config/mips/mips-dspr2.md (mips_prepend): Mask operand 3 rather
        than operand 2.

2012-02-02 Jan Hubicka  <jh@suse.cz>
           Tom de Vries  <tom@codesourcery.com>

        PR middle-end/51998
        * cgraphunit.c (cgraph_analyze_function): Break cyclic aliases.
        * varpool.c (varpool_analyze_pending_decls): Likewise.

2012-02-02  Sumanth G <sumanth.gundapaneni@kpitcummins.com>
            Jayant R Sonar <jayant.sonar@kpitcummins.com>

        * config.gcc: Add cr16-* support.

        * doc/extend.texi: Document cr16 extensions.
        * doc/install.texi: Document cr16 install.
        * doc/invoke.texi: Document cr16 options.
        * doc/md.texi: Document cr16 constraints.

        * common/config/cr16/cr16-common.c: New file.
        * config/cr16/cr16.c: New file.
        * config/cr16/cr16.h: New file.
        * config/cr16/cr16.md: New file.
        * config/cr16/cr16.opt: New file.
        * config/cr16/cr16-protos.h: New file.
        * config/cr16/predicates.md: New file.
        * config/cr16/constraints.md: New file.
        * config/cr16/t-cr16: New file.

2012-02-02  Jakub Jelinek  <jakub@redhat.com>

        PR target/52086
        * config/i386/i386.md (*addqi_2 peephole with SImode addition): Check
        that operands[2] is either immediate, or q_regs_operand.

        PR tree-optimization/52073
        * tree-vect-stmts.c (vect_mark_relevant): When checking uses of
        a pattern stmt for pattern uses, ignore uses outside of the loop.

2012-02-01  Georg-Johann Lay  <avr@gjlay.de>

        * config/avr/avr.c: Resolve all AS1 and AS2 macros.
        * config/avr/avr.h (AS1, AS2, AS2C, AS3): Remove.
        (OUT_AS1, OUT_AS2): Remove.

2012-02-01  Georg-Johann Lay  <avr@gjlay.de>

        PR rtl-optimization/51374
        * combine.c (can_combine_p): Don't allow volatile_refs_p insns
        to cross other volatile_refs_p insns.

2012-02-01  Richard Guenther  <rguenther@suse.de>

        * doc/invoke.texi (fno-inline): Clarify documentation.
        (finline-small-functions): Likewise.
        (finline-functions): Likewise.
        * common.opt (finline): Adjust comment and documentation.
        (finline-small-functions): Clarify documentation.
        (finline-functions): Likewise.
        (finline-functions-called-once): Likewise.

2012-02-01  Tristan Gingold  <gingold@adacore.com>

        * c-typeck.c (composite_type): Keep mode for pointers.

2012-01-31  Richard Sandiford  <rdsandiford@googlemail.com>

        * function.h (regno_reg_rtx): Adjust comment.
        * reginfo.c (init_reg_modes_target): Only use the previous mode
        if it fits within one register.  Remove MIPS comment.

2012-01-31  Jakub Jelinek  <jakub@redhat.com>

        PR bootstrap/52058
        * combine.c (do_SUBST_LINK, SUBST_LINK): Guard with #ifndef HAVE_cc0.

2012-01-31  Andreas Krebbel  <Andreas.Krebbel@de.ibm.com>

        * config/s390/s390.md ("*ashr<mode>3_and"): Add missing z196 flag
        to srak instruction.

2012-01-31  Matthew Gretton-Dann  <matthew.gretton-dann@arm.com>

        * config/arm/thumb2.md (thumb2_mov_notscc): Use MVN for true condition.

2012-01-31  Jakub Jelinek  <jakub@redhat.com>

        PR bootstrap/52041
        PR bootstrap/52039
        PR target/51974
        * ipa-prop.c (detect_type_change_1): Call ao_ref_init.

2012-01-31  Richard Guenther  <rguenther@suse.de>

        PR tree-optimization/51528
        * tree-sra.c (sra_modify_assign): Avoid copy-in/out for aggregate
        assigns.

2012-01-31  Jakub Jelinek  <jakub@redhat.com>

        PR bootstrap/52041
        PR bootstrap/52039
        PR target/51974
        * ree.c (add_removable_extension): Change def_map argument
        to unsigned *, store in def_map 1 + offset into *insn_list vector
        instead of pointers into the vector.
        (find_removable_extensions): Adjust caller.

2012-01-30  Georg-Johann Lay  <avr@gjlay.de>

        * config/avr/avr.md: Resolve all AS1 and AS2 macros.
        Transform all "* quoted-c-code" to { c-code }.
        Remove redundant test for "optimize" in combine patterns.
        Move (include "avr-dimode.md") to end of file.

2012-01-30  Bin Cheng  <bin.cheng@arm.com>

        PR target/51835
        * config/arm/arm.c (arm_libcall_uses_aapcs_base): Use correct ABI
        for __aeabi_d2iz/__aeabi_d2uiz with hard-float.

2012-01-30  Richard Guenther  <rguenther@suse.de>

        PR tree-optimization/52028
        * tree-loop-distribution.c (ldist_gen): Properly update
        virtual SSA form.

2012-01-30  Jakub Jelinek  <jakub@redhat.com>

        PR debug/52027
        * dwarf2out.c (dwarf2out_switch_text_section): Don't call
        set_cur_line_info_table if not emitting debug info.

        PR tree-optimization/52046
        * tree-vect-patterns.c (check_bool_pattern): Give up if
        a comparison could throw.

        PR debug/52048
        * tree-ssa-tail-merge.c (local_def): Ignore debug uses.

2012-01-30  Richard Guenther  <rguenther@suse.de>

        PR tree-optimization/52045
        * tree-optimize.c (execute_cleanup_cfg_post_optimizing): Update
        SSA form if cfgcleanup did anything.

2012-01-30  Richard Guenther  <rguenther@suse.de>

        PR tree-optimization/52045
        * ipa-inline-transform.c (inline_transform): Call execute_fixup_cfg
        before computing final todo.

2012-01-30  Richard Guenther  <rguenther@suse.de>

        PR tree-optimization/51528
        * tree-sra.c (sra_modify_assign): Re-factor in preparation
        for PR51528 fix.

2012-01-30  Paolo Bonzini  <bonzini@gnu.org>

        * df-problems.c (df_kill_notes): Check that the use refers
        to the note under examination.

2012-01-30  Eric Botcazou  <ebotcazou@adacore.com>

        PR target/51920
        * config/sparc/sparc.c (vector_init_fpmerge): Remove INNER_MODE
        parameter and use short-lived pseudos.
        (vector_init_faligndata): Remove INNER_MODE parameter and use loop.
        (sparc_expand_vector_init): Const-ify local variables and adjust
        calls to above functions.

2012-01-30  Georg-Johann Lay  <avr@gjlay.de>

        * config/avr/avr.c (out_movqi_mr_r): Fix length computation.

2012-01-29  Sandra Loosemore  <sandra@codesourcery.com>

        * doc/invoke.texi: Make usage of "compile time" and
        "run time"/"runtime" consistent throughout the file.

2012-01-29  Uros Bizjak  <ubizjak@gmail.com>

        * config/alpha/alpha.c (alpha_option_override): Default to
        full IEEE compliance mode for Go language.

2011-01-29  Tijl Coosemans  <tijl@coosemans.org>

        * config/freebsd-spec.h [TARGET_LIBC_PROVIDES_SSP]
        (LINK_SSP_SPEC): Define.

2012-01-28  John David Anglin  <dave.anglin@nrc-cnrc.gc.ca>

        PR target/51871
        * config/pa/pa.c (pa_return_addr_rtx): Add support for PA2.0 export
        stubs.

2012-01-28  Sandra Loosemore  <sandra@codesourcery.com>

        * doc/invoke.texi: Correct hyphenation of "floating point",
        "double precision", and related terminology throughout the file.

2012-01-28  Jakub Jelinek  <jakub@redhat.com>

        PR target/52006
        * config/arm/arm.md (pic_add_dot_plus_eight peephole2): Use
        arm_general_register_operand predicate for operand 2 instead of
        register_operand.

2012-01-27  Ian Lance Taylor  <iant@google.com>

        PR go/47656
        * builtins.def (BUILT_IN_INIT_HEAP_TRAMPOLINE): Define.
        * builtins.c (expand_builtin_init_trampoline): Add onstack
        parameter.  Change caller.
        (expand_builtin): Handle BUILT_IN_INIT_HEAP_TRAMPOLINE.
        * tree.c (build_common_builtin_nodes): Declare
        __builtin_init_heap_trampoline.

2012-01-27  Georg-Johann Lay  <avr@gjlay.de>

        * config/avr/avr-protos.h (lpm_reg_rtx, lpm_addr_reg_rtx,
        tmp_reg_rtx, zero_reg_rtx, all_regs_rtx, rampz_rtx): Make global.
        * config/avr/avr.c: Ditto.
        (avr_regnames): Remove because unused.
        * config/avr/avr.md (*cpse.ne): New peephole.
        (*cpse.eq): New peephole from former cpse peepholes.

2012-01-27  Michael Eager  <eager@eagercon.com>

        * config/microblaze.c (microblaze_emit_compare): Correct
        test after pcmp instruction.

2012-01-27  Richard Guenther  <rguenther@suse.de>

        PR tree-optimization/52020
        * tree-sra.c (sra_modify_assign): Do not transform clobbers.

2012-01-27  Richard Guenther  <rguenther@suse.de>

        * ipa-pure-const.c (check_stmt): Clobbers do not make a
        function non-const/pure.

2012-01-27  Richard Guenther  <rguenther@suse.de>

        PR tree-optimization/50444
        * tree-sra.c (build_ref_for_offset): Properly adjust the
        MEM_REF type for unaligned accesses.

2012-01-27  Richard Guenther  <rguenther@suse.de>

        PR tree-optimization/50444
        * expr.c (mem_ref_refers_to_non_mem_p): New function.
        (expand_assignment): Use it.  Properly handle misaligned
        bases when expanding stores to component references.
        (expand_expr_real_1): Use mem_ref_refers_to_non_mem_p and
        refactor that case.

2012-01-27  Andrey Belevantsev  <abel@ispras.ru>

        PR middle-end/51389
        * Makefile.in (tree-data-ref.o): Depend on $(PARAMS_H).
        * tree-data-ref.h (find_data_references_in_loop): Remove declaration.
        * tree-data-ref.c (find_data_references_in_loop): Make static.
        (compute_all_dependences): Change return type to bool.  Bail out
        for too many datarefs in a loop.  Move the hunk resetting the data
        dependences vector from ...
        (compute_data_dependences_for_loop): ... here.  Account for
        compute_all_dependences returning false.
        (compute_data_dependences_for_bb): Likewise.
        * params.def (PARAM_LOOP_MAX_DATAREFS_FOR_DATADEPS): New param.
        * doc/invoke.texi (loop-max-datarefs-for-datadeps): Document it.

2012-01-27  Richard Guenther  <rguenther@suse.de>

        PR middle-end/51959
        * expr.c (store_field): Use the alias-set of the scratch memory
        for storing to it.

2012-01-27  Tom de Vries  <tom@codesourcery.com>

        PR tree-optimization/51990
        * tree-ssa-sccvn.c (copy_reference_ops_from_ref): Handle
        WITH_SIZE_EXPR.
        * tree-ssa-pre.c (create_component_ref_by_pieces_1): Same.

2012-01-27  Jakub Jelinek  <jakub@redhat.com>

        PR debug/52001
        * var-tracking.c (reverse_op): Don't add any reverse operation
        if V already has any constant locations.

2012-01-27  Sandra Loosemore  <sandra@codesourcery.com>

        * doc/invoke.texi: Correct usage of "command line" (noun)
        vs "command-line" (adjective) throughout.

2012-01-27  Sandra Loosemore  <sandra@codesourcery.com>

        * doc/invoke.texi (Language Independent Options): Move
        -Wcoverage-mismatch blurb from here....
        (Warning Options): ...to here.

2012-01-27  Peter Bergner  <bergner@vnet.ibm.com>

        * config/rs6000/rs6000.c (rs6000_option_override_internal):
        Set rs6000_always_hint to false for 476.

2012-01-27  Matthias Klose  <doko@ubuntu.com>

        * gcc.c (add_sysrooted_prefix): Remove trailing dir separator from
          system root.
        * incpath.c (add_standard_paths): Likewise.

2012-01-27  Richard Henderson  <rth@redhat.com>

        * config/m68k/m68k.c (TARGET_ATOMIC_TEST_AND_SET_TRUEVAL): New.
        * config/m68k/sync.md (atomic_test_and_set): Rename from
        sync_test_and_setqi and adjust the operands.
        (atomic_test_and_set_1): Rename from sync_test_and_setqi_1
        and unconditionally enable.

2012-01-27  Richard Henderson  <rth@redhat.com>

        * config/sparc/sparc.c (TARGET_ATOMIC_TEST_AND_SET_TRUEVAL): New.
        * config/sparc/sync.md (atomic_test_and_set): Only handle QImode.
        (ldstub): Rename from ldstubqi.
        (ldstub<I24MODE>): Remove.

2012-01-27  Richard Henderson  <rth@redhat.com>

        * target.def (TARGET_ATOMIC_TEST_AND_SET_TRUEVAL): New.
        * c-cppbuiltin.c (cpp_atomic_builtins): Define
        __GCC_ATOMIC_TEST_AND_SET_TRUEVAL.
        * doc/tm.texi.in (TARGET_ATOMIC_TEST_AND_SET_TRUEVAL): Add doc hook.
        * doc/tm.texi: Rebuild.

2012-01-27  Richard Henderson  <rth@redhat.com>

        * optabs.c (gen_atomic_test_and_set): Remove default.
        (maybe_emit_atomic_test_and_set): Use maybe_expand_insn.

2012-01-26  Jakub Jelinek  <jakub@redhat.com>

        PR rtl-optimization/51978
        * ree.c (make_defs_and_copies_lists): Change set_pat type to const_rtx.
        (combine_reaching_defs): Likewise.
        (struct re_info): Remove.
        (add_removable_extension): Remove x and data arguments,
        add insn, insn_list and def_map.  Use the arguments directly
        instead of using struct re_info.
        (find_removable_extensions): Don't call add_removable_extension
        through note_stores, instead just call it with single_set
        result if non-NULL.
        (find_and_remove_re): Pass curr_cand->expr instead of
        PATTERN (curr_cand->insn) as set_pat argument to combine_reaching_defs.

2012-01-26  Michael Matz  <matz@suse.de>

        PR tree-optimization/46590
        * cfgexpand.c: Revert last change (r183305).
        * gimplify.c (gimplify_bind_expr): Add clobbers for all non-gimple
        regs.
        * tree-eh.c (cleanup_empty_eh): Try to optimize clobbers before
        checking for emptiness.

2012-01-26  Jakub Jelinek  <jakub@redhat.com>

        PR middle-end/51895
        * expr.c (expand_expr_real_1): Handle BLKmode MEM_REF of
        non-addressable non-BLKmode base correctly.

2012-01-26  Michael Matz  <matz@suse.de>

        PR tree-optimization/48794
        * tree-eh.c (remove_unreachable_handlers_no_lp): Don't remove
        regions referenced from RESX/EH_DISPATCH.

2012-01-26  Andreas Krebbel  <Andreas.Krebbel@de.ibm.com>

        * config/s390/s390.h: Make BRANCH_COST an option.
        * config/s390/s390.opt: New option -mbranch-cost.

2012-01-26  Richard Henderson  <rth@redhat.com>

        Revert 2012-01-24 change:
        * trans-mem.c (requires_barrier): Do not instrument thread local
        variables and emit save/restore for them.

2012-01-25  Jakub Jelinek  <jakub@redhat.com>

        PR middle-end/51986
        * sched-deps.c (sched_get_condition_with_rev_uncached): Don't test
        for pat == 0.

2012-01-25  Richard Sandiford  <rdsandiford@googlemail.com>

        * config/mips/mips.c (mips_small_data_pattern_1): Don't process
        ASM_OPERANDS.

2012-01-25  Georg-Johann Lay  <avr@gjlay.de>

        PR target/49868
        Rename __pgm to __flash.
        Rename __pgm1 to __flash1.
        Rename __pgm2 to __flash2.
        Rename __pgm3 to __flash3.
        Rename __pgm4 to __flash4.
        Rename __pgm5 to __flash5.
        Rename __pgmx to __memx.
        * doc/extend.texi (AVR Named Address Spaces)
        Rename address space names as indicated above.
        * config/avr/avr.c (avr_addrspace): Ditto.

        * config/avr/avr-protos.h
        (avr_mem_pgmx_p): Rename to avr_mem_memx_p.
        (avr_mem_pgm_p): Rename to avr_mem_flash_p.
        * config/avr/predicates.md: Ditto.
        * config/avr/avr.c Ditto, and
        (avr_decl_pgmx_p): Rename to avr_decl_memx_p.
        (avr_decl_pgm_p): Rename to avr_decl_flash_p.

        * config/avr/avr.h (ADDR_SPACE_PGM): Rename to ADDR_SPACE_FLASH.
        (ADDR_SPACE_PGM1): Rename to ADDR_SPACE_FLASH1.
        (ADDR_SPACE_PGM2): Rename to ADDR_SPACE_FLASH2.
        (ADDR_SPACE_PGM3): Rename to ADDR_SPACE_FLASH3.
        (ADDR_SPACE_PGM4): Rename to ADDR_SPACE_FLASH4.
        (ADDR_SPACE_PGM5): Rename to ADDR_SPACE_FLASH5.
        (ADDR_SPACE_PGMX): Rename to ADDR_SPACE_MEMX.
        * config/avr/avr.c: Ditto.
        * config/avr/avr.md: Ditto.

2012-01-25  Jason Merrill  <jason@redhat.com>

        PR c++/51992
        * tree.c (find_decls_types_in_node): Walk gimple_call_fntype.

2012-01-25  Jakub Jelinek  <jakub@redhat.com>

        PR tree-optimization/51987
        * tree-data-ref.c (get_references_in_stmt): Handle references in
        non-volatile GIMPLE_ASM.

2012-01-25  Richard Guenther  <rguenther@suse.de>

        * tree-ssa-sccvn.c (vn_reference_eq): Also compare if both
        bases are dereferenced.

2012-01-25  Andrey Belevantsev  <abel@ispras.ru>

        PR rtl-optimization/48374
        * sel-sched-ir.h (get_all_loop_exits): Check for zero successors.

2012-01-25  Andrey Belevantsev  <abel@ispras.ru>

        * tree-predcom.c (tree_predictive_commoning_loop): Bail out when
        compute_data_dependences_for_loop returns false.
        * tree-parloops.c (loop_parallel_p): Likewise.

2012-01-25  Richard Guenther  <rguenther@suse.de>

        * tree.h (get_pointer_alignment_1): Declare.
        * builtins.c (get_pointer_alignment_1): New function.
        (get_pointer_alignment): Use it.

2012-01-25  Ramana Radhakrishnan  <ramana.radhakrishnan@linaro.org>

        PR rtl-optimization/48308
        * combine.c (enum undo_kind): Add UNDO_LINKS.
        (struct undo): Add member l to other_contents and where.
        (do_SUBST_LINK): New.
        (SUBST_LINK): New.
        (try_combine): Handle LOG_LINKS for the dummy i1 case.
        (undo_all): Handle UNDO_LINKS.

2012-01-25  Richard Henderson  <rth@redhat.com>

        * optabs.c (maybe_emit_atomic_test_and_set): Allow non-QImode
        mem inputs.

2012-01-24  Richard Sandiford  <rdsandiford@googlemail.com>

        * optabs.c (gen_atomic_test_and_set): Use each argument.

2012-01-24  Richard Sandiford  <rdsandiford@googlemail.com>

        * config/mips/mips-ps-3d.md (mips_addr_ps, reduc_splus_v2sf)
        (mips_cvt_pw_ps, mips_cvt_ps_pw, mips_mulr_ps, mips_cabs_cond_<fmt>)
        (mips_cabs_cond_4s, mips_cabs_cond_ps, bc1any4t, bc1any4f, bc1any2t)
        (bc1any2f, mips_rsqrt1_<fmt>, mips_rsqrt2_<fmt>, mips_recip1_<fmt>)
        (mips_recip2_<fmt>): Require TARGET_MIPS3D rather than
        TARGET_PAIRED_SINGLE_FLOAT.

2012-01-24  Richard Sandiford  <rdsandiford@googlemail.com>

        * doc/rtl.texi (MEM_IN_STRUCT_P, MEM_SCALAR_P): Delete.
        (in_struct, return_val): Remove MEM documentation.
        * rtl.h (rtx_def): Remove MEM meanings from in_struct and return_val.
        (MEM_IN_STRUCT_P, MEM_SCALAR_P): Delete.
        (MEM_COPY_ATTRIBUTES): Remove references to MEM_IN_STRUCT_P
        and MEM_SCALAR.
        * emit-rtl.c (set_mem_attributes_minus_bitpos): Likewise.
        * cfgexpand.c (add_alias_set_conflicts): Likewise.
        * expr.c (store_field): Likewise.
        * function.c (assign_stack_temp_for_type): Likewise.
        * ifcvt.c (noce_try_cmove_arith): Likewise.
        * reload1.c (reload): Likewise.
        * config/alpha/alpha.c (alpha_set_memflags_1): Likewise.
        (alpha_set_memflags): Likewise.
        * config/m32c/m32c.c (m32c_immd_dbl_mov): Nullify.

2012-01-24  Richard Sandiford  <rdsandiford@googlemail.com>

        * rtl.h (true_dependence, canon_true_dependence): Remove varies
        parameter.
        * alias.c (fixed_scalar_and_varying_struct_p): Delete.
        (true_dependence_1, write_dependence_p, may_alias_p): Don't call it.
        (true_dependence_1, true_dependence, canon_true_dependence): Remove
        varies parameter.
        * cselib.c (cselib_rtx_varies_p): Delete.
        (cselib_invalidate_mem): Update call to canon_true_dependence.
        * dse.c (record_store, check_mem_read_rtx): Likewise.
        (scan_reads_nospill): Likewise.
        * cse.c (check_dependence): Likewise.
        (cse_rtx_varies_p): Delete.
        * expr.c (safe_from_p): Update call to true_dependence.
        * ira.c (validate_equiv_mem_from_store): Likewise.
        (memref_referenced_p): Likewise.
        * postreload-gcse.c (find_mem_conflicts): Likewise.
        * sched-deps.c (sched_analyze_2): Likewise.
        * store-motion.c (load_kills_store): Likewise.
        * config/frv/frv.c (frv_registers_conflict_p_1): Likewise.
        * gcse.c (mems_conflict_for_gcse_p): Likewise.
        (compute_transp): Update call to canon_true_dependence.

2012-01-25  Richard Henderson  <rth@redhat.com>

        * optabs.c (CODE_FOR_atomic_test_and_set): Provide default.
        (maybe_emit_atomic_test_and_set): New.
        (expand_sync_lock_test_and_set): Use it.
        (expand_atomic_test_and_set): Likewise.
        * doc/extend.texi (__atomic_test_and_set): Adjust the docs to match
        the implementation; clarify implementation defined details.
        * doc/md.texi (atomic_test_and_set): Document.

2012-01-25  Richard Henderson  <rth@redhat.com>

        * config/sparc/predicates.md (zero_or_v7_operand): Use match_code.

2012-01-25  Richard Henderson  <rth@redhat.com>

        PR target/51968
        * config/arm/arm.c (neon_split_vcombine): Emit deleted note
        to effect no-op split.

2012-01-24  Aldy Hernandez  <aldyh@redhat.com>

        PR lto/51698
        * builtin-types.def: (BT_CONST_DOUBLE_PTR): New.
        (BT_FN_VOID_PTR_CONST_PTR_SIZE): New.
        (BT_FN_VOID_PTR_INT_SIZE): New.
        (BT_FN_UINT_UINT_VAR): Remove.
        (BT_FN_UINT32_UINT32_VAR): New.
        (BT_FN_DOUBLE_VPTR): Remove.
        (BT_FN_DOUBLE_CONST_DOUBLE_PTR): New.

        * gtm-builtins.def (_ITM_abortTransaction): Set return type to void.
        (_ITM_changeTransactionMode): Same.
        (_ITM_memmoveRtWt): Change return type to void.
        (_ITM_memcpyRtWt): Same.
        (_ITM_memsetW): Same.
        (_ITM_RaRD): Change types to double.
        (_ITM_RD): Same.
        (_ITM_RaWD): Same.
        (_ITM_RfWD): Same.

        * builtins.def (DEF_TM_BUILTIN): Set BOTH_P to true.

2012-01-24  Aldy Hernandez  <aldyh@redhat.com>
            Patrick Marlier  <patrick.marlier@gmail.com>

        * trans-mem.c (requires_barrier): Do not instrument thread local
        variables and emit save/restore for them.

2012-01-24  Jason Merrill  <jason@redhat.com>

        PR c++/51812
        * cgraphunit.c (cgraph_decide_is_function_needed): Don't always
        output static aliases.

2012-01-24  Jakub Jelinek  <jakub@redhat.com>

        PR driver/47249
        * common.opt (-pie, -shared, pie, shared): Change from Common to
        Driver.
        * gcc.c (display_help): Display help for -pie and -shared.

2012-01-24  Georg-Johann Lay  <avr@gjlay.de>

        PR target/49868
        * doc/extend.texi (AVR Named Address Spaces): Move sample code up.
        Remove note on size/offset limitation.
        (AVR Variable Attributes): Add example how to read data located
        with progmem.  Refer to named address spaces.
        * doc/invoke.texi (AVR Options): Fix typo.

2012-01-24  Richard Guenther  <rguenther@suse.de>

        Forward-port to trunk
        2010-09-21  Jakub Jelinek  <jakub@redhat.com>

        PR middle-end/45678
        * expr.c (expand_expr_real_1) <case VIEW_CONVERT_EXPR>: If
        op0 isn't sufficiently aligned and there is movmisalignM
        insn for mode, use it to load op0 into a temporary register.

2012-01-24  Jakub Jelinek  <jakub@redhat.com>

        PR target/51957
        * target.def (const_not_ok_for_debug_p): New hook.
        * doc/tm.texi.in (TARGET_CONST_NOT_OK_FOR_DEBUG_P): New hook
        documentation.
        * doc/tm.texi: Regenerated.
        * dwarf2out.c (const_ok_for_output_1): If
        targetm.const_not_ok_for_debug_p returns true, fail.
        * config/rs6000/rs6000.c (rs6000_const_not_ok_for_debug_p): New
        function.
        (TARGET_CONST_NOT_OK_FOR_DEBUG_P): Redefine.

2012-01-23  Kai Tietz  <ktietz@redhat.com>

        PR target/51900
        * config/i386/predicates.md (symbolic_operand): Allow
        UNSPEC_PCREL as PIC expression for lea.
        * config/i386/winnt.c (i386_pe_binds_local_p): Reworked.
        * config/i386/i386.c (ix86_delegitimize_address): Handle
        UNSPEC_PCREL for none-MEM, too.

2012-01-23  Aldy Hernandez  <aldyh@redhat.com>

        * trans-mem.c (ipa_tm_create_version): Set externally_visible.
        (ipa_tm_create_version_alias): Same.

2012-01-23  Uros Bizjak  <ubizjak@gmail.com>

        PR libitm/51830
        * builtin-types.def (BT_FN_UINT_UINT_VAR): New.
        * gtm-builtins.def (BUILT_IN_TM_START): Declare as BT_FN_UINT_UINT_VAR.

2012-01-23  Aldy Hernandez  <aldyh@redhat.com>
            Patrick Marlier  <patrick.marlier@gmail.com>
            Iain Sandoe  <developer@sandoe-acoustics.co.uk>

        PR lto/51916
        * lto-wrapper.c (run_gcc): Pass the LTO section name to
        simple_object_start_read.

2012-01-23  Richard Guenther  <rguenther@suse.de>


        PR tree-optimization/51895
        * tree-sra.c (decide_one_param_reduction): Avoid sub-optimal
        parameter decomposition into BLKmode components.

2012-01-23  Eric Botcazou  <ebotcazou@adacore.com>

        * tree-ssa-structalias.c (intra_create_variable_infos): Do not create
        fake variables for restrict-qualified pointers whose pointed-to type
        contains a placeholder.

2012-01-23  Richard Guenther  <rguenther@suse.de>

        PR tree-optimization/51949
        * ipa-split.c (execute_split_functions): Do not split malloc functions.

2012-01-23  Jakub Jelinek  <jakub@redhat.com>

        PR rtl-optimization/51933
        * ree.c (transform_ifelse): Return true right away if dstreg is
        already wider or equal to cand->mode.
        (enum ext_modified_kind, struct ext_modified, ext_state): New types.
        (make_defs_and_copies_lists): Remove defs_list and copies_list
        arguments, add state argument, just truncate state->work_list
        instead of always allocating and freeing the vector.  Assert that
        get_defs succeeds instead of returning 2.  Changed return type to bool.
        (merge_def_and_ext): Add state argument.  If SET_DEST doesn't
        have ext_src_mode, see if it has been modified already with the
        right kind of extension and has been extended before from the
        ext_src_mode.  If SET_DEST is already wider or equal to cand->mode,
        just return true.  Remember the original mode in state->modified array.
        (combine_reaching_defs): Add state argument.  Don't allocate and
        free here def_list, copied_list and vec vectors, instead just
        VEC_truncate the vectors in *state.  Don't handle outcome == 2 here.
        (find_and_remove_re): Set DF_DEFER_INSN_RESCAN df flag.
        Add state variable, clear vectors in it, initialize state.modified
        if needed.  Free all the vectors at the end and state.modified too.
        Don't skip a candidate if the extension expression has been modified.

2012-01-22  Douglas B Rupp  <rupp@gnat.com>

        PR target/47096
        * config.gcc: (i[34567]86-*-interix3*): Remove from obsolete
         configurations. Change triplet to i[34567]86-*-interix[3-9]*.
        (extra_options) interix.opt -> i386/interix.opt"
        (extra_objs):Add winnt-stubs.o
        * configure.ac: Add interix to target_os .comm on PE check.
        * configure: Regenerate.
        * config/interix3.h: Delete and move bits to..
        * config/interix.h: Delete and move bits to..
        * config/i386/i386-interix3.h: Delete and move bits to..
        * config/i386/i386-interix.h: ..here.
        (TARGET_CPU_DEFAULT): Remove redefinition.
        (TARGET_ASM_CONSTRUCTOR): Undefine.
        (SUBTARGET_SWITCHES): Define for ms-bitfields.
        (TARGET_OS_CPP_BUILTINS): Remove __OPENNT. Add __declspec.
        (PTRDIFF_TYPE): Define.
        (LONG_DOUBLE_TYPE_SIZE): Define.
        (LIBGCC2_LONG_DOUBLE_TYPE_SIZE): Define.
        (SUBTARGET_OVERRIDE_OPTIONS): Remove.
        (TARGET_SECTION_TYPE_FLAGS): Define.
        (ASM_DECLARE_FUNCTION_NAME): Define.
        (ASM_OUTPUT_EXTERNAL): Define.
        (ASM_OUTPUT_EXTERNAL_LIBCALL): Define.
        (ASM_OUTPUT_ALIGNED_BSS): Define.
        (PCC_BITFIELD_TYPE_MATTERS): Define.
        (USE_CONST_SECTION): Define.
        (SUBTARGET_ENCODE_SECTION_INFO): Remove.
        (TARGET_ASM_FUNCTION_RODATA_SECTION): Remove.
        (SUPPORTS_ONE_ONLY): Remove.
        (I386_PE_STRIP_ENCODING): Define.
        * config/interix.opt: Delete and move bits to..
        * config/i386/interix.opt: ..here. New.
        (mpe-aligned-commons): Add.
        * config/i386/t-interix: Add copyright header.
        (winnt-stubs.o): Add rule.

2012-01-22  Jason Merrill  <jason@redhat.com>

        PR c++/51832
        * varpool.c (varpool_analyze_pending_decls): Copy DECL_EXTERNAL
        for extra name aliases.

2012-01-22  Eric Botcazou  <ebotcazou@adacore.com>

        PR rtl-optimization/51924
        * ree.c (combine_set_extension): Improve debugging message.
        (combine_reaching_defs): Likewise.
        (get_defs): Rename confusingly named variable.
        (find_and_remove_re): Skip a candidate if the extension expression has
        been modified.

2012-01-21  Robert Millan  <rmh@gnu.org>
            Gerald Pfeifer  <gerald@pfeifer.com>

        * config/kfreebsd-gnu.h (GNU_USER_DYNAMIC_LINKERX32): New macro.
        (GNU_USER_DYNAMIC_LINKER): Adjust indentation.

2012-01-20  Jakub Jelinek  <jakub@redhat.com>

        PR tree-optimization/51914
        * tree-vect-stmts.c (vectorizable_conversion): For
        cvt_type && modifier == WIDEN, put temporary with cvt_type
        at the beginning of vec_dsts and set vec_dest to temporary
        with vectype_out.

2012-01-20  Eric Botcazou  <ebotcazou@adacore.com>

        * cfgrtl.c (rtl_dump_bb): Do not dump insns for {ENTRY|EXIT}_BLOCK.

2011-01-20  Tijl Coosemans  <tijl@coosemans.org>

        * config/i386/i386.c: Fix checks for !TARGET_MACHO.
        * config/rs6000/rs6000.c: Likewise.

2012-01-20  Jakub Jelinek  <jakub@redhat.com>

        PR target/51915
        * config/arm/arm.c (arm_count_output_move_double_insns): Call
        output_move_double on a copy of operands array.

2012-01-20  Cary Coutant  <ccoutant@google.com>
            Dodji Seketeli  <dodji@redhat.com>

        PR debug/45682
        * dwarf2out.c (copy_declaration_context): Return ref to parent
        of declaration DIE, if necessary.
        (remove_child_or_replace_with_skeleton): Add new parameter; update
        caller.  Place skeleton DIE under parent DIE of original declaration.
        Move call to copy_declaration_context to here ...
        (break_out_comdat_types): ... from here.

2012-01-20  Andreas Krebbel  <Andreas.Krebbel@de.ibm.com>

        PR rtl-optimization/51856
        * reload.c (find_reloads_subreg_address): Set the address_reloaded
        flag to reloaded.

2012-01-20  Ramana Radhakrishnan  <ramana.radhakrishnan@linaro.org>

        PR target/51819
        * config/arm/arm.c (arm_print_operand): Correct output of alignment
        hints for neon loads and stores.

2012-01-20  Georg-Johann Lay  <avr@gjlay.de>

        PR target/49868
        PR target/50887
        * doc/extend.texi (Named Address Spaces): Split into subsections.
        (AVR Named Address Spaces): New subsection.
        (M32C Named Address Spaces): New subsection.
        (RL78 Named Address Spaces): New subsection.
        (SPU Named Address Spaces): New subsection.
        (Variable Attributes): New anchor "AVR Variable Attributes".
        (AVR Variable Attributes): Rewrite and avoid wording
        "address space" in this context.
        * doc/invoke.texi (AVR Options): Rewrite and add documentation
        for -maccumulate-args, -mbranch-cost=, -mrelax, -mshort-calls.
        (AVR Built-in Macros): New subsubsection therein.
        * doc/md.texi (AVR constraints): Remove "C04", "R".

2012-01-20  Richard Guenther  <rguenther@suse.de>

        PR tree-optimization/51903
        * tree-ssa-pre.c (eliminate): Properly purging of EH edges
        when removing stmts.

2012-01-20  Ramana Radhakrishnan  <ramana.radhakrishnan@linaro.org>

        PR target/50313
        * config/arm/arm.c (arm_load_pic_register): Use
        gen_pic_load_addr_unified. Delete calls to gen_pic_load_addr_32bit
        , gen_pic_add_dot_plus_eight and gen_pic_add_dot_plus_four.
        (arm_pic_static_addr): Likewise.
        (arm_rtx_costs_1): Adjust cost for UNSPEC_PIC_UNIFIED.
        (arm_note_pic_base): Handle UNSPEC_PIC_UNIFIED.
        * config/arm/arm.md (UNSPEC_PIC_UNIFIED): Define.
        (pic_load_addr_unified): New.

2012-01-20  Andrey Belevantsev  <abel@ispras.ru>

        PR target/51106
        * function.c (instantiate_virtual_regs_in_insn): Use
        delete_insn_and_edges when removing a wrong asm insn.

2012-01-19  Vladimir Makarov  <vmakarov@redhat.com>

        PR rtl-optimization/40761
        * ira-int.h (struct ira_loop_tree_node): Add comment for member loop.
        Add new member loop_num.
        (IRA_LOOP_NODE_BY_INDEX): Modify the check.
        (ira_build): Remove the parameter.

        * ira.c (ira_print_disposition): Use loop_num instead of loop->num.
        (ira.c): Do not build CFG loops for one region allocation.  Remove
        argument from ira_build call.

        * ira-build.c (init_loop_tree_node): New function.
        (create_loop_tree_nodes): Use it.  Separate the case when CFG
        loops are not built.
        (more_one_region_p): Check current_loops.
        (finish_loop_tree_nodes): Separate the case when CFG loops are not
        built.
        (add_loop_to_tree): Process loop equal to NULL too.
        (form_loop_tree): Separate the case when CFG loops are not built.
        Use explicitly number for the root.
        (rebuild_regno_allocno_maps, create_loop_tree_node_allocnos): Add
        an assertion.
        (ira_print_expanded_allocno, loop_compare_func): Use loop_num
        instead of loop->num.
        (mark_loops_for_removal): Ditto.  Use loop_num instead of loop->num.
        (mark_all_loops_for_removal): Ditto.
        (remove_unnecessary_regions): Separate the case when CFG loops
        are not built.
        (ira_build): Remove the parameter.  Use explicit number of regions
        when CFG loops are not built.

        * ira-color.c (print_loop_title): Separate the case for the root node.
        Use loop_num instead of loop->num.
        (move_spill_restore): Use loop_num instead of loop->num.

        * ira-emit.c (setup_entered_from_non_parent_p): Add an assertion.
        (change_loop): Ditto.
        (change_loop): Use loop_num instead of loop->num.

        * ira-lives.c (process_bb_node_lives): Ditto.

        * ira-costs.c (print_allocno_costs, find_costs_and_classes): Ditto.

        * ira-conflicts.c (print_allocno_conflicts): Ditto.

2012-01-19  Jakub Jelinek  <jakub@redhat.com>

        PR libmudflap/40778
        * tree-mudflap.c (mf_artificial): New function.
        (execute_mudflap_function_ops, execute_mudflap_function_decls,
        mx_register_decls, mudflap_enqueue_decl): Use it.

        PR target/51876
        * config/arm/neon.md (*neon_vswp<mode>): Fix up operand
        numbers in the insn pattern.

2012-01-19  Michael Matz  <matz@suse.de>

        PR tree-optimization/46590
        * cfgexpand.c (add_scope_conflicts_1): New old_conflicts argument,
        use it in remembering which conflicts we already created.
        (add_scope_conflicts): Adjust call to above, (de)allocate helper
        bitmap.

2012-01-19  Aldy Hernandez  <aldyh@redhat.com>

        PR lto/51280
        * lto-wrapper.c (run_gcc): Pass -fgnu_tm on.
        (merge_and_complain): Same.

2012-01-19  Jakub Jelinek  <jakub@redhat.com>

        PR bootstrap/50237
        * config/initfini-array.h: Guard content of the header
        with #ifdef HAVE_INITFINI_ARRAY.
        * configure.ac: Move gcc_AC_INITFINI_ARRAY much later into the file.
        Add initfini-array.h to tm_file here.
        * acinclude.m4 (gcc_AC_INITFINI_ARRAY): For non-ia64 do a linker test.
        * config.gcc: Don't add initfini-array.h to tm_file here.
        * configure: Regenerated.

2012-01-19  Andrey Belevantsev  <abel@ispras.ru>

        PR rtl-optimization/51505
        * df-problems.c (df_kill_notes): New parameter live. Update comment.
        Remove REG_EQUAL/REG_EQUIV notes referring to dead registers.
        (df_note_bb_compute): Update the call to df_kill_notes.

2012-01-18  Aldy Hernandez  <aldyh@redhat.com>

        * trans-mem.c (requires_barrier): Remove call to is_global_var.

2012-01-18  Richard Guenther  <rguenther@suse.de>

        * tree-ssa.c (useless_type_conversion_p): Remove special-casing
        of conversions to void *.

2012-01-17  Andreas Krebbel  <Andreas.Krebbel@de.ibm.com>
            Richard Sandiford  <rdsandiford@googlemail.com>

        PR middle-end/50325
        PR middle-end/51192
        * optabs.h (simplify_expand_binop): Declare.
        * optabs.c (simplify_expand_binop): Make global.
        * expmed.c (store_bit_field_1): Use simplify_expand_binop on big
        endian targets if the source cannot be exactly covered by word
        mode chunks.

2012-01-17  Jakub Jelinek  <jakub@redhat.com>

        PR bootstrap/51872
        * hard-reg-set.h (struct hard_reg_set_container): New type.
        * target.h (struct hard_reg_set_container): Forward declare.
        * target.def (set_up_by_prologue): New target hook.
        * doc/tm.texi.in (TARGET_SET_UP_BY_PROLOGUE): Document it.
        * doc/tm.texi: Regenerated.
        * function.c (thread_prologue_and_epilogue_insns): Change
        set_up_by_prologue HARD_REG_SET into struct hard_reg_set_container.
        Call targetm.set_up_by_prologue on it.
        * config/rs6000/rs6000.c (rs6000_set_up_by_prologue): New function.
        (TARGET_SET_UP_BY_PROLOGUE): Redefine to it.

2012-01-17  Nick Clifton  <nickc@redhat.com>

        * config/rx/rx.c (rx_can_use_simple_return): New function.
        * config/rx/rx-protos.h (rx_can_use_simple_return): Prototype.
        * config/rx/rx.md (return): Predicate on rx_can_use_simple_return.

2012-01-17  Richard Guenther  <rguenther@suse.de>

        PR middle-end/51782
        * expr.c (expand_assignment): Take address-space information
        from the address operand of MEM_REF and TARGET_MEM_REF.
        (expand_expr_real_1): Likewise.

2012-01-17  Andreas Krebbel  <Andreas.Krebbel@de.ibm.com>

        * ira.c (do_reload): Make sure ira_dump_file is re-set if no
        reload dump is requested.

2012-01-17  Aldy Hernandez  <aldyh@redhat.com>

        PR other/51165
        * trans-mem.c (requires_barrier): Call may_be_aliased.

2012-01-17  Jakub Jelinek  <jakub@redhat.com>

        PR tree-optimization/51877
        * tree-ssa-tail-merge.c (gimple_equal_p): Don't return true whenever
        call arguments and fndecls compare equal, instead return false if they
        don't.  Return true only if lhs1 and lhs2 are either both NULL, or
        both SSA_NAMEs that are valueized the same, or they satisfy
        operand_equal_p.

2012-01-17  Rainer Orth  <ro@CeBiTec.Uni-Bielefeld.DE>

        * configure.ac (gcc_cv_target_dl_iterate_phdr): Only check on
        Solaris 11+.
        * configure: Regenerate.

2012-01-16  Jan Hubicka  <jh@suse.cz>

        PR c/12245
        PR c++/14179
        * convert.c (convert_to_integer): Use fold_convert for
        converting an INTEGER_CST to integer type.

2012-01-16  Jason Merrill  <jason@redhat.com>

        PR c++/14179
        * vec.c (vec_gc_o_reserve_1): Use ggc_round_alloc_size.

2012-01-16  Jakub Jelinek  <jakub@redhat.com>

        PR bootstrap/51860
        * config/s390/s390.c (s390_chunkify_start): Don't skip
        call insns followed by NOTE_INSN_CALL_ARG_LOCATION note.  Skip
        NOTE_INSN_VAR_LOCATION and NOTE_INSN_CALL_ARG_LOCATION notes.
        If insn is followed by NOTE_INSN_VAR_LOCATION or
        NOTE_INSN_CALL_ARG_LOCATION notes, insert jump after all those notes.
        Don't use location of note insns.

        PR tree-optimization/51865
        * tree-inline.c (tree_function_versioning): Call remap_decl
        on DECL_RESULT whenever it has VOID_TYPE_P type.

2012-01-15  Richard Sandiford  <rdsandiford@googlemail.com>

        * config/mips/mips.c (mips16_build_call_stub): Don't use a stub
        for calls to locally-binding MIPS16 functions if only the return
        type uses float regs.

2012-01-15  Chung-Lin Tang  <cltang@codesourcery.com>
            Richard Sandiford  <rdsandiford@googlemail.com>

        * config/mips/mips-protos.h (SYMBOL_FORCE_TO_MEM): Delete.
        (SYMBOL_32_HIGH): Likewise.
        (mips_output_tls_reloc_directive): Declare.
        * config/mips/mips.h (PIC_FUNCTION_ADDR_REGNUM): Move to mips.md.
        (mips_use_pcrel_pool_p, mips_lo_relocs, mips_hi_relocs): Declare.
        * config/mips/mips.c (mips_use_pcrel_pool_p): New variable.
        (mips_lo_relocs, mips_hi_relocs): Make extern.
        (mips16_stub_function): Move up file.
        (mips_classify_symbol): Remove SYMBOL_FORCE_TO_MEM handling.
        (mips_symbolic_constant_p): Likewise.  Remove SYMBOL_32_HIGH too.
        (mips_symbol_insns_1): Likewise.  Check mips_use_pcrel_pool_p.
        (mips_cannot_force_const_mem): Use mips_use_pcrel_pool_p instead of
        SYMBOL_FORCE_TO_MEM.  Only check mips_tls_symbol_ref_1 if it's false.
        (mips_get_tp): Add MIPS16 support.
        (mips_legitimize_tls_address): Remove MIPS16 sorry().
        Generalize DTPREL and TPREL handling.
        (mips_init_relocs): Initialize mips_use_pcrel_pool_p.
        Add MIPS16 TLS support.
        (mips_output_tls_reloc_directive): New function.
        (mips16_rewrite_pool_refs): Ignore UNSPEC_TLS_GET_TPs.
        * config/mips/predicates.md (symbolic_operand_with_high)
        (tls_reloc_operand): New predicates.
        (force_to_mem_operand): Use mips_use_pcrel_pool_p.
        * config/mips/mips.md (UNSPEC_UNSHIFTED_HIGH): New unspec.
        (PIC_FUNCTION_ADDR_REGNUM): Moved from mips.h.
        (*unshifted_high): New instruction.  Use it for MIPS16 high splitter.
        (consttable_tls_reloc, tls_get_tp_mips16_<mode>): New patterns.
        (*tls_get_tp_mips16_call_<mode>): Likewise.

2012-01-15  Uros Bizjak  <ubizjak@gmail.com>

        PR rtl-optimization/51821
        * recog.c (peep2_find_free_register): Determine clobbered registers
        from insn pattern.

2012-01-14  Denis Chertykov  <chertykov@gmail.com>

        PR target/50925
        * config/avr/avr-protos.h: Revert change of 2012-01-09.
        * config/avr/avr.c: Likewise.
        * config/avr/avr.h: Likewise.

2012-01-13  Ian Lance Taylor  <iant@google.com>

        PR c++/50012
        * tree.h (TYPE_QUALS): Add cast to int.
        (TYPE_QUALS_NO_ADDR_SPACE): Likewise.

2012-01-13  Ian Lance Taylor  <iant@google.com>

        * ipa-cp.c (ipa_get_indirect_edge_target): Add typecasts when
        comparing param_index to VEC_length result.

2012-01-13  Steven Bosscher  <steven@gcc.gnu.org>

        * c-decl.c: Do not include tree-mudflap.h
        * tree-optimize.c: Likewise.
        * Makefile.in: Update dependencies.

2012-01-13  Richard Guenther  <rguenther@suse.de>

        PR middle-end/8081
        * gimplify.c (gimplify_modify_expr_rhs): For calls with a
        variable-sized result always use RSO.

2012-01-12  DJ Delorie  <dj@redhat.com>

        * cfgexpand.c (convert_debug_memory_address): Allow any valid
        pointer type, not just the default pointer type.

2012-01-09  Richard Henderson  <rth@redhat.com>
            Denis Chertykov  <chertykov@gmail.com>

        PR target/50925
        * config/avr/avr-protos.h (avr_hard_regno_nregs): Declare.
        * config/avr/avr.c (avr_can_eliminate): Simplify.
        (avr_initial_elimination_offset): Likewise.
        (avr_prologue_setup_frame): Use hard_frame_pointer_rtx.
        (expand_epilogue): Likewise.
        (avr_legitimize_address): Gut.
        (avr_legitimize_reload_address): Use hard_frame_pointer_rtx.
        (avr_hard_regno_nregs): New.
        (avr_hard_regno_ok): Allow only Pmode for arg and frame_pointers.
        (avr_regno_mode_code_ok_for_base_b): Handle arg and frame pointers.
        * config/avr/avr.h (FIXED_REGISTERS): Adjust arg pointer,
        add soft frame pointer.
        (CALL_USED_REGISTERS): Likewise.
        (REG_CLASS_CONTENTS): Likewise.
        (REGISTER_NAMES): Likewise.
        (HARD_REGNO_NREGS): Use avr_hard_regno_nregs.
        (HARD_FRAME_POINTER_REGNUM): New.
        (FRAME_POINTER_REGNUM): Use soft frame pointer.
        (ELIMINABLE_REGS): Eliminate from the soft frame pointer,
        remove the HARD_FRAME_POINTER self-elimination.

2012-01-12  Georg-Johann Lay  <avr@gjlay.de>

        PR target/51756
        * config/avr/avr.c (avr_encode_section_info): Test for absence of
        DECL_EXTERNAL when checking for initializers of progmem variables.

2012-01-12  Ira Rosen  <irar@il.ibm.com>

        PR tree-optimization/51799
        * tree-vect-patterns.c (vect_recog_over_widening_pattern): Check
        that the last operation is a type demotion.

2012-01-12  Uros Bizjak  <ubizjak@gmail.com>

        * config/i386/i386.md (*zero_extendsidi2_rex64): Correct movl template.
        (x86_shift<mode>_adj_1): Remove operand constraint from operand 3.

2012-01-11  Jakub Jelinek  <jakub@redhat.com>

        PR bootstrap/51796
        * combine.c (distribute_notes): If i3 is a noreturn call,
        allow old_size to be equal to args_size and make sure the
        noreturn call gets REG_ARGS_SIZE note.
        * expr.c (fixup_args_size_notes): Put REG_ARGS_SIZE notes
        on noreturn calls even when the delta is 0.

2012-01-11  Nathan Sidwell  <nathan@acm.org>

        * gcov.c (STRING_SIZE): Remove.
        (generate_results): Erase annotations for source files with no
        coverage information.
        (read_line): New.
        (output_lines): Use it.

2012-01-11  Eric Botcazou  <ebotcazou@adacore.com>

        * gimple.h (gimplify_body): Remove first argument.
        * gimplify.c (copy_if_shared): Add DATA argument.  Do not create the
        pointer set here, instead just pass DATA to walk_tree.
        (unshare_body): Remove BODY_P argument and adjust.  Create the pointer
        set here and invoke copy_if_shared on the size trees of DECL_RESULT.
        (unvisit_body): Likewise, but with unmark_visited.
        (gimplify_body): Remove BODY_P argument and adjust.
        (gimplify_function_tree): Adjust call to gimplify_body.
        * omp-low.c (finalize_task_copyfn): Likewise.

2012-01-11  Eric Botcazou  <ebotcazou@adacore.com>

        * tree.h (build_function_decl_skip_args): Add boolean parameter.
        (build_function_type_skip_args): Delete.
        * tree.c (build_function_type_skip_args): Make static and add
        SKIP_RETURN parameter.  Fix thinko in the handling of variants.
        (build_function_decl_skip_args): Add SKIP_RETURN parameter and
        pass it to build_function_type_skip_args.
        * cgraph.h (cgraph_function_versioning): Add boolean parameter.
        (tree_function_versioning): Likewise.
        * cgraph.c (cgraph_create_virtual_clone): Adjust call to
        build_function_decl_skip_args.
        * cgraphunit.c (cgraph_function_versioning): Add SKIP_RETURN parameter
        and pass it to build_function_decl_skip_args/tree_function_versioning.
        (cgraph_materialize_clone): Adjust call to tree_function_versioning.
        * ipa-inline-transform.c (save_inline_function_body): Likewise.
        * trans-mem.c (ipa_tm_create_version): Likewise.
        * tree-sra.c (modify_function): Ditto for cgraph_function_versioning.
        * tree-inline.c (declare_return_variable): Remove always-true test.
        (tree_function_versioning): Add SKIP_RETURN parameter.  If the function
        returns non-void and SKIP_RETURN, create a void-typed RESULT_DECL.
        * ipa-split.c (split_function): Skip the return value for the split
        part if it doesn't return.

2012-01-11  Bill Schmidt  <wschmidt@linux.vnet.ibm.com>

        PR tree-optimization/49642
        * ipa-split.c (forbidden_dominators): New variable.
        (check_forbidden_calls): New function.
        (dominated_by_forbidden): Likewise.
        (consider_split): Check for forbidden dominators.
        (execute_split_functions): Initialize and free forbidden
        dominators info; call check_forbidden_calls.

2012-01-11  Matthew Gretton-Dann  <matthew.gretton-dann@arm.com>

        * config/arm/arm.md (mov_notscc): Use MVN for false condition.

2012-01-11  Nick Clifton  <nickc@redhat.com>

        * config/rx/rx.md (return): Define pattern.

2012-01-11  Richard Guenther  <rguenther@suse.de>

        * doc/extend.texi (malloc attribute): Adjust according to
        implementation.

2012-01-10  Aldy Hernandez  <aldyh@redhat.com>
            Patrick Marlier  <patrick.marlier@gmail.com>

        PR middle-end/51516
        * trans-mem.c (get_cg_data): Traverse aliases if requested.
        (ipa_tm_scan_calls_block): Update parameters to get_cg_data.
        (ipa_tm_note_irrevocable): Same.
        (ipa_tm_scan_irr_block): Same.
        (ipa_tm_decrement_clone_counts): Same.
        (ipa_tm_scan_irr_function): Same.
        (ipa_tm_create_version_alias): Same.
        (ipa_tm_create_version): Same.
        (ipa_tm_transform_calls_redirect): Same.
        (ipa_tm_transform_calls): Same.
        (ipa_tm_transform_transaction): Same.
        (ipa_tm_execute): Same.

2012-01-10  Richard Guenther  <rguenther@suse.de>

        PR middle-end/51806
        * opts.c (common_handle_option): Handle -Werror.

2012-01-10  Andreas Schwab  <schwab@linux-m68k.org>

        * config/m68k/sync.md ("atomic_compare_and_swap<mode>_1"): Fix
        operand number.

2012-01-10  Jason Merrill  <jason@redhat.com>

        * doc/invoke.texi (C++ Dialect Options): Update -fabi-version=6
        information.

2012-01-10  Rainer Orth  <ro@CeBiTec.Uni-Bielefeld.DE>

        * configure.ac (gcc_cv_as_ix86_tlsgdplt): Check if linker
        supports R_386_TLS_GD_PLT reloc.
        (gcc_cv_as_ix86_tlsldmplt): Check if linker
        supports R_386_TLS_LDM_PLT reloc.
        * configure: Regenerate.
        * config.in: Regenerate.

2012-01-10  Georg-Johann Lay  <avr@gjlay.de>

        PR target/49868
        Extend __pgmx semantics to linearize memory.
        * config/avr/avr.md (mov<mode>): Use avr_xload_libgcc_p to
        determine if code comes inline or from libgcc.
        (MOVMEM_r_d:HI): Add "w" to constraint for better preference.
        (movmem_qi, movmem_qi): Set constraint #2 to "n".
        (movmem_qi_elpm, movmem_hi_elpm): Remove insns.
        (movmemx_qi, movmemx_hi): New insns.
        (xload_<mode>_libgcc): Rewrite to new insn condition.
        (xload_<mode>): Remove insns.
        * config/avr/avr.c (avr_out_xload): Rewrite: Only need to handle
        cases that don't satisfy avr_xload_libgcc_p().
        (avr_addr_space_convert): Allow converting in any direction.
        (avr_addr_space_subset_p): Return always true.
        (avr_xload_libgcc_p): Rewrite to fit new __pgmx semantics.
        (avr_emit_movmemhi): Ditto.
        (avr_out_lpm): No need to handle ADDR_SPACE_PGMX any more.
        (avr_out_movmem): Ditto.
        (AVR_SYMBOL_FLAG_PROGMEM): New macro.
        (AVR_SYMBOL_SET_ADDR_SPACE): New macro.
        (AVR_SYMBOL_GET_ADDR_SPACE): New macro.
        (avr_encode_section_info): Encode 'progmem' in symbol flags.
        (output_reload_in_const): Don't zero-extend any 24-bit symbols.

2012-01-10  Richard Guenther  <rguenther@suse.de>

        PR tree-optimization/50913
        * graphite-scop-detection.c (stmt_has_simple_data_refs_p):
        Require data-refs to be representable by Graphite with respect
        to any loop nest.

2012-01-10  Uros Bizjak  <ubizjak@gmail.com>

        * config/i386/constraints.md ("L"): Return true for 0xffffffff.
        * config/i386/i386.c (*anddi_1): Emit AND with 0xffffffff as MOV.

2012-01-10  Tom de Vries  <tom@codesourcery.com>

        PR rtl-optimization/51271
        * dwarf2cfi.c (scan_trace): Save and restore cur_row->reg_save when
        handling annulled branch.

2012-01-10  Richard Henderson  <rth@redhat.com>

        * config/arm/arm.c (arm_vectorize_vec_perm_const_ok,
        TARGET_VECTORIZE_VEC_PERM_CONST_OK, neon_split_vcombine, MAX_VECT_LEN,
        struct expand_vec_perm_d, arm_expand_vec_perm_1, arm_expand_vec_perm,
        arm_evpc_neon_vuzp, arm_evpc_neon_vzip, arm_evpc_neon_vrev,
        arm_evpc_neon_vtrn, arm_evpc_neon_vtbl, arm_expand_vec_perm_const_1,
        arm_expand_vec_perm_const): New.
        * config/arm/arm-protos.h: Update.
        * config/arm/neon.md (UNSPEC_VCONCAT): New.
        (*neon_vswp<VDQX>): New.
        (neon_vcombine<VDX>): Use neon_split_vcombine.
        (neon_vtbl1v16qi, neon_vtbl2v16qi, neon_vcombinev16qi): New.
        * config/arm/vec-common.md (vec_perm_const<VALL>): New.
        (vec_perm<VE>): New.

2012-01-10  Richard Henderson  <rth@redhat.com>

        * config/arm/arm.c (arm_gen_compare_reg): Add scratch argument;
        use it if reload_completed.
        (arm_legitimize_sync_memory, arm_emit, arm_insn_count, arm_count,
        arm_output_asm_insn, arm_process_output_memory_barrier,
        arm_output_memory_barrier, arm_ldrex_suffix, arm_output_ldrex,
        arm_output_strex, arm_output_it, arm_output_op2, arm_output_op3,
        arm_output_sync_loop, arm_get_sync_operand, FETCH_SYNC_OPERAND,
        arm_process_output_sync_insn, arm_output_sync_insn,
        arm_sync_loop_insns, arm_call_generator, arm_expand_sync): Remove.
        (arm_pre_atomic_barrier, arm_post_atomic_barrier): New.
        (arm_emit_load_exclusive, arm_emit_store_exclusive): New.
        (emit_unlikely_jump): New.
        (arm_expand_compare_and_swap, arm_split_compare_and_swap): New.
        (arm_split_atomic_op): New.
        * config/arm/arm-protos.h: Update.
        * config/arm/arm.h (enum arm_sync_generator_tag): Remove.
        (struct arm_sync_generator): Remove.
        * config/arm/arm.md (VUNSPEC_SYNC_COMPARE_AND_SWAP, VUNSPEC_SYNC_LOCK,
        VUNSPEC_SYNC_OP, VUNSPEC_SYNC_NEW_OP, VUNSPEC_SYNC_OLD_OP): Remove.
        (VUNSPEC_ATOMIC_CAS, VUNSPEC_ATOMIC_XCHG, VUNSPEC_ATOMIC_OP): New.
        (VUNSPEC_LL, VUNSPEC_SC): New.
        (sync_result, sync_memory, sync_required_value, sync_new_value,
        sync_t1, sync_t2, sync_release_barrier, sync_op): Remove.
        (attr length): Don't use arm_sync_loop_insns.
        (cbranch_cc, cstore_cc): Update call to arm_gen_compare_reg.
        (movsfcc, movdfcc): Likewise.
        * config/arm/constraints.md (Ua): New.
        * config/arm/prediates.md (mem_noofs_operand): New.
        (sync_compare_and_swap<QHSD>, sync_lock_test_and_set<QHSD>): Remove.
        (sync_clobber, sync_t2_reqd): Remove.
        (sync_<syncop><QHSD>, sync_nand<QHSD>): Remove.
        (sync_new_<syncop><QHSD>, sync_new_nand<QHSD>): Remove.
        (sync_old_<syncop><QHSD>, sync_old_nand<QHSD>): Remove.
        (arm_sync_compare_and_swap<SIDI>): Remove.
        (arm_sync_compare_and_swap<NARROW>): Remove.
        (arm_sync_lock_test_and_set<SIDI>): Remove.
        (arm_sync_lock_test_and_set<NARROW>): Remove.
        (arm_sync_new_<syncop><SIDI>): Remove.
        (arm_sync_new_<syncop><NARROW>): Remove.
        (arm_sync_new_nand<SIDI>): Remove.
        (arm_sync_new_nand<NARROW>): Remove.
        (arm_sync_old_<syncop><SIDI>): Remove.
        (arm_sync_old_<syncop><NARROW>): Remove.
        (arm_sync_old_nand<SIDI>): Remove.
        (arm_sync_old_nand<NARROW>): Remove.
        (*memory_barrier): Merge arm_output_memory_barrier.
        (atomic_compare_and_swap<QHSD>): New.
        (atomic_compare_and_swap<NARROW>_1): New.
        (atomic_compare_and_swap<SIDI>_1): New.
        (atomic_exchange<QHSD>): New.
        (cas_cmp_operand, cas_cmp_str): New.
        (atomic_op_operand, atomic_op_str): New.
        (atomic_<syncop><QHSD>, atomic_nand<QHSD>): New.
        (atomic_fetch_<syncop><QHSD>, atomic_fetch_nand<QHSD>): New.
        (atomic_<syncop>_fetch<QHSD>, atomic_nand_fetch<QHSD>): New.
        (arm_load_exclusive<NARROW>): New.
        (arm_load_exclusivesi, arm_load_exclusivedi): New.
        (arm_store_exclusive<QHSD>): New.

2012-01-09  Michael Meissner  <meissner@linux.vnet.ibm.com>

        * config/rs6000/rs6000.c (rs6000_init_hard_regno_mode_ok): Add DF
        reload patterns if -mvsx-scalar-memory.

        * config/rs6000/vsx.md (vsx_xscvspdp): Allow xscvspdp to be
        generated, even -mno-vsx-scalar-double was used.
        (vsx_xscvdpsp_scalar): Likewise.
        (vsx_xscvspdp_scalar2): Likewise.

2012-01-09  Tom de Vries  <tom@codesourcery.com>
            Andrew Pinski  <apinski@cavium.com>

        PR debug/51471
        * reorg.c (fill_slots_from_thread): Don't speculate
        frame-related insns.

2012-01-09  Richard Sandiford  <rdsandiford@googlemail.com>

        * sched-int.h (bb_note): Move to...
        * basic-block.h: ...here.
        * haifa-sched.c (bb_note): Move to...
        * cfgrtl.c: ...here.
        * function.c (next_block_for_reg): New function.
        (move_insn_for_shrink_wrap): Likewise.
        (prepare_shrink_wrap): Rewrite to use the above.

2012-01-09  Aldy Hernandez  <aldyh@redhat.com>

        * gimple.c (is_gimple_non_addressable): Remove.
        * gimple.h: Remove is_gimple_non_addressable.
        * gimplify.c (gimplify_modify_expr_rhs): Use is_gimple_reg instead of
        is_gimple_non_addressable.
        * trans-mem.c (expand_assign_tm): Same.

2012-01-09  Richard Guenther  <rguenther@suse.de>

        PR tree-optimization/51775
        * tree-ssa-sccvn.c (visit_use): Value-number throwing stmts.
        * tree-ssa-pre.c (eliminate): Properly fixup EH info.

2012-01-09  Matthew Gretton-Dann  <matthew.gretton-dann@arm.com>

        * config/arm/arm-cores.def (cortex-a15): Use cortex_a15_tune for
        tuning parameters.
        * config/arm/arm.c (arm_cortex_a15_tune): New static variable.

2012-01-09  Richard Guenther  <rguenther@suse.de>

        * tree-streamer-out.c (write_ts_optimization): Fix spelling.

2012-01-08  Jan Hubicka  <jh@suse.cz>

        PR tree-optimize/51680
        * ipa-inline-analyss.c (evaluate_properties_for_edge): Fix condition
        on when known_vals needs to be computed; cleanup.

2012-01-08  Jan Hubicka  <jh@suse.cz>

        PR tree-optimize/51694
        * ipa-cp.c (ipa_get_indirect_edge_target): Add bounds checks.

2012-01-08  Jonathan Wakely  <jwakely.gcc@gmail.com>

        * doc/cpp.texi (Predefined Macros): __STRICT_ANSI__ is defined
        for -std=c++98 and -std=c++11 too.

2012-01-08  Chung-Lin Tang  <cltang@codesourcery.com>

        * cfgloop.c (cancel_loop): Add free() of bbs array.

2012-01-07  Jan Hubicka  <jh@suse.cz>

        PR tree-optimization/51600
        * ipa-inline-analysis.c (estimate_edge_devirt_benefit): Disable code
        that benefits small functions.

2012-01-07  Jan Hubicka  <jh@suse.cz>

        * ipa-inline.c (want_inline_small_function_p): Fix formating.

2012-01-07  Jan Hubicka  <jh@suse.cz>

        PR tree-optimization/51680
        * ipa-inline.c (want_inline_small_function_p): Be more lax on functions
        whose inlining reduce unit size.

2012-01-07  Alexandre Oliva  <aoliva@redhat.com>

        PR bootstrap/51725
        * cselib.c (new_elt_loc_list): Promote addr_list to canonical node.
        Add canonical node to containing_mem chain after the non-canonical
        one, even if there weren't any locs to propagate.
        (remove_useless_values): Keep only canonical values.
        (add_mem_for_addr, cselib_lookup_mem): Canonicalize addr.
        (cselib_invalidate_mem): Likewise.  Ensure v is canonical, and
        canonicalize mem_chain elements that are not discarded.

2012-01-06  Jakub Jelinek  <jakub@redhat.com>

        PR target/47333
        * cgraphunit.c (cgraph_optimize): Call output_weakrefs
        before emitting functions.

        PR gcov-profile/50127
        * bb-reorder.c (partition_hot_cold_basic_blocks): Call
        clear_aux_for_blocks.

2012-01-06  Alexandre Oliva  <aoliva@redhat.com>

        PR debug/51746
        * cselib.c (cselib_hash_rtx): Hash incoming VALUEs too.

2012-01-06  Arnaud Charlet  <charlet@adacore.com>

        * c-decl.c (ext_block): Moved up.
        (collect_all_refs, for_each_global_decl): Take ext_block into account.

2012-01-06  Han Shen  <shenhan@google.com>

        Translate built-in include paths for sysroot.
        * Makefile.in (gcc_gxx_include_dir_add_sysroot): New.
        (PREPROCESSOR_DEFINES): Define GPLUSPLUS_INCLUDE_DIR_ADD_SYSROOT.

        * cppdefault.c (cpp_include_defaults): Replace hard coded "0" with
        GPLUSPLUS_INCLUDE_DIR_ADD_SYSROOT for "add_sysroot" field.

        * configure.ac (AC_SUBST): Add gcc_gxx_include_dir_add_sysroot to
        control whether sysroot should be prepended to gxx include dir.

        * configure: Regenerate.

2012-01-06  Torvald Riegel  <triegel@redhat.com>

        PR rtl-optimization/51771
        * builtin-attrs.def (ATTR_RETURNS_TWICE, ATTR_TM_NOTHROW_RT_LIST): New.
        * gtm-builtins.def (BUILT_IN_TM_START): Add returns-twice attrib.

2012-01-05  Eric Botcazou  <ebotcazou@adacore.com>

        PR tree-optimization/51315
        * tree-sra.c (tree_non_aligned_mem_for_access_p): New predicate.
        (build_accesses_from_assign): Use it instead of tree_non_aligned_mem_p.

2012-01-05  Uros Bizjak  <ubizjak@gmail.com>

        PR target/51681
        * config/ia64/ia64.c (expand_vec_perm_shrp): Use correct operands
        for shrp pattern.  Correctly handle and fixup shift variable.
        Return false when shift > nelt for BYTES_BIG_ENDIAN target.

2012-01-05  Jakub Jelinek  <jakub@redhat.com>

        PR debug/51762
        * calls.c (emit_call_1): For noreturn calls force a REG_ARGS_SIZE
        note when !ACCUMULATE_OUTGOING_ARGS.

2012-01-05  Eric Botcazou  <ebotcazou@adacore.com>

        * tree-vrp.c (extract_range_from_binary_expr_1): Remove duplicated
        condition.
        (extract_range_from_unary_expr_1): Avoid useless computations.

2012-01-05  Jakub Jelinek  <jakub@redhat.com>

        PR rtl-optimization/51767
        * cfgrtl.c (force_nonfallthru_and_redirect): Force addition
        of jump_block and add an extra edge for degenerated asm gotos.

        PR middle-end/51768
        * stmt.c (check_unique_operand_names): Don't ICE during error
        reporting if i is from labels chain.

        PR middle-end/44777
        * profile.c (branch_prob): Split bbs that have exit edge
        and need a fake entry edge too.

2012-01-05  Jan Hubicka  <jh@suse.cz>

        PR middle-end/49710
        * cfgloopmanip.c (remove_path): Walk loop hiearchy upwards when
        unlooping loops.

2012-01-05  Richard Guenther  <rguenther@suse.de>

        PR lto/50490
        * tree-streamer-out.c (write_ts_optimization): New function.
        (streamer_write_tree_body): Call it.
        * tree-streamer-in.c (lto_input_ts_optimization): New function.
        (streamer_read_tree_body): Call it.
        * lto-streamer-out.c (lto_is_streamable): Handle OPTIMIZATION_NODE.

2012-01-05  Jakub Jelinek  <jakub@redhat.com>

        PR middle-end/51761
        * gimple.h (struct gimplify_ctx): Add in_cleanup_point_expr field.
        * gimplify.c (gimplify_cleanup_point_expr): Save and set
        in_cleanup_point_expr before gimplify_stmt call and restore it
        afterwards.
        (gimplify_target_expr): Don't add {CLOBBER} cleanup if
        in_cleanup_point_expr is false.

2012-01-05  Richard Guenther  <rguenther@suse.de>

        PR middle-end/51764
        * common.opt (Wmudflap, fmudflap, fmudflapth, fmudflapir): Move
        to c.opt.
        * toplev.c (process_options): Reject combining mudflap and LTO.
        * tree-nomudflap.c (nogo): Use sorry instead of internal_error.

2012-01-05  Richard Guenther  <rguenther@suse.de>

        PR tree-optimization/51760
        * tree-ssa-ccp.c (likely_value): Drop UNDEFINED to CONSTANT,
        not VARYING.
        (bit_value_unop): Handle UNDEFINED operands.
        (bit_value_binop): Likewise.

2012-01-05  Georg-Johann Lay  <avr@gjlay.de>

        * config/avr/avr.c (avr_replace_prefix): Remove.
        (avr_asm_named_section): Use ACONCAT instead of avr_replace_prefix.
        (avr_asm_function_rodata_section): Ditto.
        (avr_asm_select_section): Ditto.

2012-01-05  Marcus Shawcroft  <marcus.shawcroft@arm.com>

        * reload.c (find_reloads): Adjust LABEL_NUSES on REG_LABEL_OPERAND
        insertion.

2012-01-05  Jakub Jelinek  <jakub@redhat.com>

        PR bootstrap/51648
        * tree-cfg.c (need_fake_edge_p): Return true also for noreturn
        calls that have any non-fake successor edges.

        PR debug/51746
        * var-tracking.c (add_stores): For COND_EXEC allow oval to be NULL.

2012-01-04  Eric Botcazou  <ebotcazou@adacore.com>

        PR tree-optimization/51624
        * tree-sra.c (build_ref_for_model): When replicating a chain of
        COMPONENT_REFs, stop as soon as the offset would become negative.

2012-01-04  Jakub Jelinek  <jakub@redhat.com>

        PR debug/51695
        * dwarf2out.c (output_loc_list): For now drop >= 64KB expressions
        in .debug_loc on the floor.

2012-01-04  Andrew Pinski  <apinski@cavium.com>

        * doc/invoke.texi (-march=@var{arch}): Add octeon+ and octeon2.

2012-01-04  Andrew Pinski  <apinski@cavium.com>
            Adam Nemet  <anemet@caviumnetworks.com>

        * config/mips/mips.md (size): Add SI and DI.
        (SIZE): New mode attribute.
        (U): New code attribute.
        * config/mips/mips-dsp.md (mips_lbux): Use gen_mips_lbux_extsi.
        (mips_lbux_<mode>): Delete.
        (mips_l<SHORT:size><u>x_ext<GPR:mode>_<P:mode>): New pattern.
        (mips_lhx): Use gen_mips_lhx_extsi.
        (mips_lhx_<mode>): Delete.
        (mips_lwx): Delete.
        (mips_l<size>x): New expand.
        (mips_lwx_<mode>): Delete.
        (mips_l<GPR:size>x_<P:mode>): New pattern.
        (*mips_lw<u>x_<P:mode>_ext): Likewise.
        * config/mips/mips-ftypes.def: Add DI f(POINTER, SI) function type.
        * config/mips/mips.c (mips_lx_address_p): New function.
        (mips_rtx_costs <case MEM>): Call mips_lx_address_p.
        (dsp64): New availability predicate.
        (mips_builtins): Add an entry for __builtin_mips_ldx.
        * config/mips/mips.h (ISA_HAS_LBX): New define.
        (ISA_HAS_LBUX): Likewise.
        (ISA_HAS_LHX): Likewise.
        (ISA_HAS_LHUX): Likewise.
        (ISA_HAS_LWX): Likewise.
        (ISA_HAS_LWUX): Likewise.
        (ISA_HAS_LDX): Likewise.
        * doc/extend.texi (__builtin_mips_ldx): Document.

2012-01-04  Tristan Gingold  <gingold@adacore.com>

        * config/vms/xm-vms.h (HOST_LONG_FORMAT, HOST_PTR_PRINTF): Define
        when long pointers are used.
        * config.build (*-*-*vms*): Handle all OpenVMS targets.
        (alpha64-dec-*vms*, alpha*-dec-*vms*)
        (ia64-hp-*vms*): Remove.
        * config/vms/xm-vms64.h: Delete.

2012-01-04  Aldy Hernandez  <aldyh@redhat.com>

        PR middle-end/51472
        * trans-mem.c (expand_assign_tm): Handle TM_MEMMOVE loads correctly.

2012-01-04  Aldy Hernandez  <aldyh@redhat.com>

        * opts.c (finish_options): Remove duplicate sorry.

2012-01-04  Aldy Hernandez  <aldyh@redhat.com>

        PR middle-end/51696
        * trans-mem.c (diagnose_tm_1): Display indirect calls with no name
        correctly.

2012-01-04  Richard Guenther  <rguenther@suse.de>

        PR middle-end/51750
        * tree.c (size_low_cst): New function.
        * tree.h (size_low_cst): Declare.
        * fold-const.c (fold_comparison): Use it to extract the low
        part of the POINTER_PLUS_EXPR offset.

2012-01-04  Georg-Johann Lay  <avr@gjlay.de>

        Fix clearing ZERO_REG
        * config/avr/avr.md (cc): Add alternative "ldi".
        (movqi_insn): Use it in cc attribute.
        * config/avr/avr.c (notice_update_cc): Handle CC_LDI.
        (output_reload_in_const): Use CLR to move 0 to ZERO_REG.
        (output_reload_insisf): Use ZERO_REG to pre-clear register.

2012-01-04  Andreas Krebbel  <Andreas.Krebbel@de.ibm.com>

        * configure: Regenerate.

2012-01-04  Richard Guenther  <rguenther@suse.de>

        PR tree-optimization/49651
        * tree-ssa-structalias.c (type_can_have_subvars): New function.
        (var_can_have_subvars): Use it.
        (get_constraint_for_1): Only consider subfields if there can be any.

2012-01-03  Jakub Jelinek  <jakub@redhat.com>

        PR bootstrap/51725
        * cselib.c (new_elt_loc_list): When moving locs from one cselib_val
        to its new canonical_cselib_val and the cselib_val was in
        first_containing_mem chain, but the canonical_cselib_val was not,
        add the latter into the chain.
        (cselib_invalidate_mem): Compare canonical_cselib_val of
        addr_list chain elt with v.

        PR pch/51722
        * dwarf2out.c (dwarf2out_start_source_file, dwarf2out_define,
        dwarf2out_undef): Allocate e.info using ggc_strdup instead
        of xstrdup.
        (output_macinfo_op): Don't ggc_strdup fd->filename.
        (optimize_macinfo_range): Allocate grp_name using XALLOCAVEC,
        then ggc_strdup it.  Don't free inc->info or cur->info.
        (output_macinfo): Don't free ref->info or file->info.

2012-01-03  Ira Rosen  <irar@il.ibm.com>

        PR tree-optimization/51269
        * tree-vect-loop-manip.c (set_prologue_iterations): Make
        first_niters a pointer.
        (slpeel_tree_peel_loop_to_edge): Likewise.
        (vect_do_peeling_for_loop_bound): Update call to
        slpeel_tree_peel_loop_to_edge.
        (vect_gen_niters_for_prolog_loop): Don't compute wide_prolog_niters
        here.  Remove it from the parameters list.
        (vect_do_peeling_for_alignment): Update calls and compute
        wide_prolog_niters.

2012-01-03  Richard Guenther  <rguenther@suse.de>

        PR tree-optimization/51070
        * tree-loop-distribution.c (stmt_has_scalar_dependences_outside_loop):
        Properly handle calls.

2012-01-03  Richard Guenther  <rguenther@suse.de>

        PR tree-optimization/51692
        * tree-ssa-dce.c (eliminate_unnecessary_stmts): Do not remove
        the LHS of allocation stmts.

2012-01-03  Olivier Hainque  <hainque@adacore.com>

        * system.h: Prior to #define, #undef fopen and freopen unconditionally.

2012-01-03  Olivier Hainque  <hainque@adacore.com>

        * collect2.c (main): In AIX specific computations for vector
        insertions, use CONST_CAST2 to cast from char ** to const char **.

2012-01-03  Richard Guenther  <rguenther@suse.de>

        PR debug/51650
        * dwarf2out.c (dwarf2out_finish): Always create a DIE for
        the context of a limbo DIE when it does not already exist.

2012-01-03  Jakub Jelinek  <jakub@redhat.com>

        PR tree-optimization/51719
        * value-prof.c (gimple_ic): When indirect call isn't noreturn,
        but direct call is, clear direct call's lhs and don't add fallthrough
        edge from dcall_bb to join_bb and PHIs.

2012-01-03  Andreas Krebbel  <Andreas.Krebbel@de.ibm.com>

        * config/s390/s390.md ("*cmp<mode>_ccs"): Fix comment mentioning
        the instructions emitted by the pattern.
        ("*TDC_insn_<mode>"): Add comment.

2012-01-03  Richard Guenther  <rguenther@suse.de>

        PR middle-end/51730
        * fold-const.c (fold_comparison): Properly canonicalize
        tree offset and HOST_WIDE_INT bit position.

2012-01-02  Uros Bizjak  <ubizjak@gmail.com>

        * config/ia64/ia64.c (expand_vec_perm_broadcast): Use correct
        operands for extzv pattern.

2012-01-02  Jakub Jelinek  <jakub@redhat.com>

        PR bootstrap/51725
        * cselib.c (add_mem_for_addr): Call canonical_cselib_val
        on mem_elt first.

2012-01-02  Sandra Loosemore  <sandra@codesourcery.com>

        * doc/invoke.texi (-flto and related options): Copy-edit.

2012-01-02  Richard Sandiford  <rdsandiford@googlemail.com>

        * config/mips/mips.md (loadgp_newabi_<mode>): Add missing earlyclobber.

2012-01-02  Jakub Jelinek  <jakub@redhat.com>

        * config/i386/sse.md (*avx2_gatherdi<mode>_3, *avx2_gatherdi<mode>_4):
        New patterns.

2012-01-02  Richard Sandiford  <rdsandiford@googlemail.com>

        * expr.h (move_by_pieces_ninsns): Declare.
        * expr.c (move_by_pieces_ninsns): Make external.
        * config/mips/mips-protos.h (mips_move_by_pieces_p): Declare.
        (mips_store_by_pieces_p): Likewise.
        * config/mips/mips.h (MOVE_BY_PIECES_P): Call mips_move_by_pieces_p.
        (STORE_BY_PIECES_P): Likewise mips_store_by_pieces_p.
        * config/mips/mips.c (mips_move_by_pieces_p): New function.
        (mips_store_by_pieces_p): Likewise.

2012-01-02  Jakub Jelinek  <jakub@redhat.com>

        * passes.c (register_one_dump_file): Free full_name.

        * reload1.c (reload): Don't allocate reg_max_ref_width here.
        (calculate_elim_costs_all_insns): Free offsets_at and
        offsets_known_at at the end and clear the pointers.

2012-01-02  Georg-Johann Lay  <avr@gjlay.de>

        * config/avr/avr.opt (-mbranch-cost): Fix double definition of
        this option introduced in r180739.

2012-01-02  Georg-Johann Lay  <avr@gjlay.de>

        PR target/51345
        * config.gcc (tm_file target=avr]): Add avr/avr-multilib.h
        (tmake_file target=avr): Add avr/t-multilib.

        * config/avr/avr-c.c (avr_cpu_cpp_builtins): Use AVR_HAVE_8BIT_SP
        to built-in define __AVR_HAVE_8BIT_SP__, __AVR_HAVE_16BIT_SP__.
        * config/avr/genmultilib.awk: New file.
        * config/avr/t-multilib: New auto-generated file.
        * config/avr/multilib.h: New auto-generated file.
        * config/avr/t-avr (AVR_MCUS): New variable.
        (genopt.sh): Use it.
        (s-mlib): Depend on t-multilib.
        (t-multilib, multilib.h): New dependencies.
        (s-avr-mlib): New rule to build t-multilib, multilib.h from AVR_MCUS.
        (MULTILIB_OPTIONS): Remove.
        (MULTILIB_MATCHES): Remove.
        (MULTILIB_DIRNAMES): Remove.
        (MULTILIB_EXCEPTIONS): Remove:
        * config/avr/genopt.sh: Don't use hard coded file name;
        pass AVR_MCUS from t-avr instead.

2012-01-02  Georg-Johann Lay  <avr@gjlay.de>

        * config/avr/avr.c (avr_out_ashrpsi3): Fix "case 31" to "case 23".

2012-01-02  Georg-Johann Lay  <avr@gjlay.de>

        Implement light-weight DImode support.
        * config/avr/avr-dimode.md: New file.
        * config/avr/avr.md: Include it.
        (adjust_len): Add plus64, compare64.
        (HIDI): Remove code iterator.
        (code_stdname): New code attribute.
        (rotx, rotsmode): Remove DI.
        (rotl<mode>3, *rotw<mode>, *rotb<mode>): Use HISI instead of HIDI
        as code iterator.
        * config/avr/avr-protos.h (avr_have_dimode): New.
        (avr_out_plus64, avr_out_compare64): New.
        * config/avr/avr.c (avr_out_compare): Handle DImode.
        (avr_have_dimode): New variable definition and initialization.
        (avr_out_compare64, avr_out_plus64): New functions.
        (avr_out_plus_1): Use simplify_unary_operation to negate xval.
        (adjust_insn_length): Handle ADJUST_LEN_COMPARE64, ADJUST_LEN_PLUS64.
        (avr_compare_pattern): Skip DImode comparisons.

2012-01-02  Revital Eres  <revital.eres@linaro.org>

        * ddg.c (def_has_ccmode_p): New function.
        (add_cross_iteration_register_deps,
        create_ddg_dep_from_intra_loop_link): Call it.

2012-01-02  Richard Guenther  <rguenther@suse.de>

        PR other/51679
        * invoke.texi (fassociative-math): Remove spurious paranthesis.

2012-01-01  Jakub Jelinek  <jakub@redhat.com>

        * gcc.c (process_command): Update copyright notice dates.
        * gcov.c (print_version): Likewise.
        * gcov-dump.c (print_version): Likewise.
        * mips-tfile.c (main): Likewise.
        * mips-tdump.c (main): Likewise.

2012-01-01  Ira Rosen  <irar@il.ibm.com>

        PR tree-optimization/51704
        * tree-vect-slp.c (vect_detect_hybrid_slp_stmts): Check that
        a use is inside the basic block or loop before accessing its vect info.

2012-01-01  Jan Hubicka  <jhjh@suse.cz>

        PR rtl-optimization/51069
        * cfgloopmanip.c (remove_path): Removing path making irreducible
        region unconditional makes BB part of the region.

2012-01-01  Jakub Jelinek  <jakub@redhat.com>

        PR tree-optimization/51683
        * tree-ssa-propagate.c (substitute_and_fold): Don't optimize away
        calls with side-effects.
        * tree-ssa-ccp.c (ccp_fold_stmt): Likewise.
\f
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Copying and distribution of this file, with or without modification,
are permitted in any medium without royalty provided the copyright
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