re PR tree-optimization/66388 (Test gcc.target/i386/pr49781-1.c failed because of recent scev overflow patches.)


	PR tree-optimization/66388
	* tree-ssa-loop-ivopts.c (struct iv, iv_cand, ivopts_data): New
	fields.
	(dump_iv): Dump no_overflow information.
	(alloc_iv): Initialize new field for struct iv.
	(mark_bivs): Count number of no_overflow bivs.
	(find_deriving_biv_for_expr, record_biv_for_address_use): New
	functions.
	(idx_find_step): Call new functions above.
	(add_candidate_1, add_candidate): New paramter.
	(add_iv_candidate_for_biv): Add sizetype cand for BIV.
	(get_computation_aff): Simplify convertion of cand for BIV.
	(get_computation_cost_at): Step cand's base if necessary.

From-SVN: r227844

	* tree-ssa-loop-niter.c (tree_simplify_using_condition_1): New
	parameter.
	(tree_simplify_using_condition): Ditto.
	(simplify_using_initial_conditions): Ditto.
	(loop_exits_before_overflow): Pass new argument to function
	simplify_using_initial_conditions.  Remove case for type conversions
	simplification.
	* tree-ssa-loop-niter.h (simplify_using_initial_conditions): New
	parameter.
	* tree-scalar-evolution.c (simple_iv): Simplify type conversions
	in iv base using loop initial conditions.

	gcc/testsuite/ChangeLog
	* gcc.dg/tree-ssa/loop-bound-2.c: New test.
	* gcc.dg/tree-ssa/loop-bound-4.c: New test.
	* gcc.dg/tree-ssa/loop-bound-6.c: New test.

From-SVN: r227843

	PR tree-optimization/47679
	* tree-ssa-dom.c (free_edge_info): Factored out of free_all_edge_infos.
	(free_all_edge_infos): Use it.
	(allocate_edge_info): Free preexisting edge info data.
	(pass_dominator::execute): Set up initial edge info structures.
	(dom_opt_dom_walker::thread_across_edge): Pass avail_expr_stack to
	thread_across_edge.
	* tree-ssa-threadedge.c (thread_across_edge): Accept new argument.  If
	non-null, then push/pop markers appropriately.
	* tree-ssa-threadedge.h (thread_across_edge): Update prototype.
	* tree-vrp.c (identify_jump_threads): Pass NULL for new argument to
	thread-across_edge.

From-SVN: r227842

gcc/

	* config/ft32/ft32.c Fix the memory address space predicate.

From-SVN: r227841

From-SVN: r227840

re PR target/67573 ([SH] wrong code generated for libstdc++-v3/src/c++11/cxx11-shim_facets.cc at -mlra)

PR target/67573
* config/sh/sh.md: Add early clobber to scratch	operand of *call_*pcrel
insn_and_split so not to CSE scratch reg.

From-SVN: r227837

	PR libstdc++/67173
	* acinclude.m4 (GLIBCXX_CHECK_FILESYSTEM_DEPS): Check _XOPEN_VERSION
	and PATH_MAX for _GLIBCXX_USE_REALPATH.
	* config.h.in: Regenerate.
	* configure: Regenerate.
	* src/filesystem/ops.cc: (canonical) [!_GLIBCXX_USE_REALPATH]: Add
	alternative implementation.
	* testsuite/experimental/filesystem/operations/canonical.cc: New.
	* testsuite/experimental/filesystem/operations/exists.cc: Add more
	tests.
	* testsuite/experimental/filesystem/operations/absolute.cc: Add test
	variables.
	* testsuite/experimental/filesystem/operations/copy.cc: Likewise.
	* testsuite/experimental/filesystem/operations/current_path.cc:
	Likewise.
	* testsuite/experimental/filesystem/operations/file_size.cc: Likewise.
	* testsuite/experimental/filesystem/operations/status.cc: Likewise.
	* testsuite/experimental/filesystem/operations/temp_directory_path.cc:
	Likewise.

From-SVN: r227836

Unfortunately, toplev.c is a kitchen sink of things that do not belong anywhere
in particular. For example, check_global_declarations is only used in
cgraphunit.c. Moving it there allows us to make it static and remove one call
to symtab_node::get.

gcc/ChangeLog:

2015-09-16  Manuel López-Ibáñez  <manu@gcc.gnu.org>

	* toplev.h (check_global_declaration): Remove declaration.
	* toplev.c (check_global_declaration): Move to ...
	* cgraphunit.c: ... here. Make it static and pass a symtab_node *.
	(analyze_functions): Update call.

From-SVN: r227835

    
    Fixes golang/go#12320.
    
    Reviewed-on: https://go-review.googlesource.com/13932

From-SVN: r227834

gcc/
	* lra-constraints.c (simplify_operand_subreg): Do not assume that
	lowpart of a SUBREG has offset zero.

From-SVN: r227833

2015-09-16  John Marino  <gnugcc@marino.st>

	* gfortran.dg/read_dir.f90: XFAIL this testcase on DragonFly.

From-SVN: r227832

	PR tree-optimization/47679
	* tree-ssa-dom.c (enum expr_kind): Moved from here to
	tree-ssa-scopedtables.h.
	(struct hashable_expr, class expr_hash_elt): Likewise.
	(struct expr_elt_hasher, class avail_exprs_stack): Likewise.
	Move associated methods into tree-ssa-scopedtables.c.
	(avail_expr_hash, initialize_expr_from_cond): Similarly.
	(hashable_expr_equal_p, add_expr_commutative): Likewise.
	(add_hashable_expr): Likewise.
	(record_cond): Delete element directly.
	* tree-ssa-scopedtables.h (avail_expr_stack, const_and_copies): Add
	private copy ctor and assignment operator methods.
	(expr_elt_hasher): Inline trivial methods.
	(initialize_expr_from_cond): Prototype.
	* tree-ssa-scopedtables.c: Add necessary includes, functions and
	methods that were previously in tree-ssa-dom.c.  Improve various
	comments.

From-SVN: r227831

    
    Fixes golang/go#11548.
    
    Reviewed-on: https://go-review.googlesource.com/13794

From-SVN: r227830

2015-09-16  Paolo Carlini  <paolo.carlini@oracle.com>

	* doc/invoke.texi ([Wsubobject-linkage]): Extend documentation.

From-SVN: r227828

With the new shrink-wrap algorithm, blocks reachable both with and
without prologue are duplicated, and their incoming edges are then
distributed accordingly.  So we need to call fixup_partitions.


2015-09-16  Segher Boessenkool  <segher@kernel.crashing.org>

	PR bootstrap/67587
	* function.c (rest_of_handle_thread_prologue_and_epilogue): Call
	fixup_partitions.

From-SVN: r227827

2015-09-16  Richard Biener  <rguenther@suse.de>

	PR middle-end/67253
	* cfgexpand.c (expand_gimple_stmt_1): Do not clobber
	location of possibly shared trees.

	* gcc.dg/torture/pr67253.c: New testcase.

From-SVN: r227826

2015-09-16  Richard Biener  <rguenther@suse.de>

	PR middle-end/67271
	* fold-const.c (native_encode_expr): Bail out on bogus offsets.

	* gcc.dg/pr67271.c: New testcase.

From-SVN: r227825

tree-ssa-sccvn.c (ao_ref_init_from_vn_reference): Use offset_int for offset and size computations instead of HOST_WIDE_INT.

	* tree-ssa-sccvn.c (ao_ref_init_from_vn_reference): Use offset_int for
	offset and size computations instead of HOST_WIDE_INT.

From-SVN: r227819

re PR middle-end/67442 (GCC 5.2.0 on x86_64 creates invalid address on specific array index calculation through pointer)

2015-09-16  Richard Biener  <rguenther@suse.de>

	PR middle-end/67442
	* fold-const.c (extract_muldiv_1): Properly extend multiplication
	result before builting a tree via wide_int_to_tree.

	* gcc.dg/torture/pr67442.c: New testcase.

From-SVN: r227818

gcc/
	* Makefile.in: Add memory-block.cc
	(pool_allocator::initialize): Use fixed block size.
	(pool_allocator::release): Use memory_block_pool.
	(pool_allocator::allocate): Likewise.
	* asan.c (asan_mem_ref_pool): Adjust to use common block size in all
	object pools.
	* cfg.c (initialize_original_copy_tables): Likewise.
	* cselib.c (elt_list_pool, elt_loc_list_pool,
	cselib_val_pool): Likewise.
	* df-problems.c (df_chain_alloc): Likewise.
	* df-scan.c (df_scan_alloc): Likewise.
	* dse.c (cse_store_info_pool, rtx_store_info_pool,
	read_info_type_pool, insn_info_type_pool, bb_info_pool,
	group_info_pool, deferred_change_pool): Likewise.
	* et-forest.c (et_nodes, et_occurrences): Likewise.
	* ipa-cp.c (ipcp_cst_values_pool, ipcp_sources_pool,
	ipcp_agg_lattice_pool): Likewise.
	* ipa-inline-analysis.c (edge_predicate_pool): Likewise.
	* ipa-profile.c (histogram_pool): Likewise.
	* ipa-prop.c (ipa_refdesc_pool): Likewise.
	* ira-build.c (live_range_pool, allocno_pool, object_pool,
	initiate_cost_vectors, pref_pool, copy_pool): Likewise.
	* ira-color.c (update_cost_record_pool): Likewise.
	* lra-lives.c (lra_live_range_pool): Likewise.
	* lra.c (lra_insn_reg_pool, lra_copy_pool): Likewise.
	* memory-block.cc: New file.
	* memory-block.h: New file.
	* regcprop.c (queued_debug_insn_change_pool): Use common block size.
	* sched-deps.c (sched_deps_init): Likewise.
	* sel-sched-ir.c (sched_lists_pool): Likewise.
	* stmt.c (expand_case, expand_sjlj_dispatch_table): Likewise.
	* tree-sra.c (access_pool): Likewise.
	* tree-ssa-math-opts.c (pass_cse_reciprocals::execute): Likewise.
	* tree-ssa-pre.c (pre_expr_pool, bitmap_set_pool): Likewise.
	* tree-ssa-reassoc.c (operand_entry_pool): Likewise.
	* tree-ssa-sccvn.c (allocate_vn_table): Likewise.
	* tree-ssa-strlen.c (strinfo_pool): Likewise.
	* tree-ssa-structalias.c (variable_info_pool): Likewise.
	* var-tracking.c (attrs_def_pool, var_pool, valvar_pool,
	location_chain_pool, shared_hash_pool, loc_exp_dep_pool): Likewise.

gcc/c-family/
	* c-format.c (check_format_arg): Adjust to use common block size in all
	object pools.

From-SVN: r227817

From-SVN: r227816

    
    Fixes golang/go#12319.
    
    Reviewed-on: https://go-review.googlesource.com/13931

From-SVN: r227813

    
    If the compiler supports split-stack but we are using a gold linker that
    does not, as happens on PPC with current GCC but old gold, then we need
    to compile the Go code with -fno-split-stack to avoid a linker error
    avoid the inability to call from split-stack code to non-split-stack
    code.
    
    Reviewed-on: https://go-review.googlesource.com/14598

From-SVN: r227811

2015-09-15  Max Filippov  <jcmvbkbc@gmail.com>
gcc/
	* config/xtensa/xtensa.h (DWARF_ALT_FRAME_RETURN_COLUMN): New
	definition.
	(DWARF_FRAME_REGISTERS): Reserve space for one extra register in
	call0 ABI.

libgcc/
	* config/xtensa/linux-unwind.h (xtensa_fallback_frame_state):
	Add support for call0 ABI.

From-SVN: r227809

2015-09-15  Max Filippov  <jcmvbkbc@gmail.com>
gcc/
	* config/xtensa/xtensa.c (xtensa_call_tls_desc): Use a10 or a2
	to pass TLS call argument, according to current ABI.
	* config/xtensa/xtensa.md (tls_call pattern): Use callx8 or
	callx0 for TLS call, according to current ABI.

From-SVN: r227808

	* tree-eh.c (lower_try_finally_dup_block): Clear location information
	on stack restore statements.
	(decide_copy_try_finally): Do not consider a stack restore statement as
	coming from sources.

From-SVN: r227805

alpha.c (alpha_expand_block_clear): Use HOST_WIDE_INT_M1U instead of ~(HOST_WIDE_INT)0 when shifting.

	* config/alpha/alpha.c (alpha_expand_block_clear): Use
	HOST_WIDE_INT_M1U instead of ~(HOST_WIDE_INT)0 when shifting.

From-SVN: r227804

	PR c/67580
	* c-decl.c (tag_exists_p): New function.
	* c-parser.c (c_parser_declaration_or_fndef): Give a hint when
	struct/union/enum keywords are missing.
	* c-tree.h (tag_exists_p): Declare.

	* gcc.dg/pr67580.c: New test.

From-SVN: r227803

    
    PPC has split-stack support in current GCC, but old version of gold will
    reject attempts to link PPC split-stack and non-split-stack code
    together.  Test for that, and don't compile the C code with
    -fsplit-stack if it doesn't work.
    
    Reviewed-on: https://go-review.googlesource.com/14594

From-SVN: r227802

        PR tree-optimization/47679
	* tree-ssa-dom.c (expr_hash_elt): Now a class with ctors/dtors,
	methods and private members.
	(avail_exprs_stack): Similarly.  Change type of global
	from a pair of expr_hash_elt_t to the new class.
	(expr_elt_hasher::hash): Corresponding changes.
	(expr_elt_hasher::equal): Similarly.
	(avail_expr_hash): Similarly.
	(pass_dominator::execute): Similarly.
	(dom_opt_dom_walker::thread_across_edge): Similarly.
	(record_cond): Similarly.
	(dom_opt_dom_walker::before_dom_children): Similarly.
	(dom_opt_dom_walker::after_dom_children): Similarly.
	(lookup_avail_expr): Likewise.
	(initialize_hash_element): Now a expr_hash_elt constructor.
	(initialize_hash_element_from_expr): Similarly.
	(free_expr_hash_elt_contents): Now a dtor for class expr_hash_elt.
	(free_expr_hash_elt): Call dtor for the element.
	(remove_local_expressions_from_table): Now the "pop_to_marker"
	method in the available_exprs_stack class.
	(avail_expr_stack::record_expr): Method factored out.
	(print_expr_hash_elt): Now a method in the expr_hash_elt class.
	Fix formatting.
	(hashable_expr_equal_p): Fix formatting.

From-SVN: r227801

gcc/ChangeLog:
	* input.h (location_get_source_line): Drop "expanded_location"
	param in favor of a file and line number.
	* input.c (location_get_source_line): Likewise.
	(dump_location_info): Update for change in signature of
	location_get_source_line.
	* diagnostic.c (diagnostic_print_caret_line): Likewise.

gcc/c-family/ChangeLog:
	* c-format.c (location_from_offset): Update for change in
	signature of location_get_source_line.
	* c-indentation.c (get_visual_column): Likewise.
	(line_contains_hash_if): Likewise.

From-SVN: r227800

	* defaults.h (STACK_OLD_CHECK_PROTECT): Adjust for -fno-exceptions.
	Bump to 4KB for SJLJ exceptions.
	(STACK_CHECK_PROTECT): Likewise.  Bump to 8KB for SJLJ exceptions.
	* doc/tm.texi.in (STACK_CHECK_PROTECT): Adjust.
	* doc/tm.texi: Regenerate.

From-SVN: r227799

	* config/arm/arm.c (arm_gen_constant): Use HOST_WIDE_INT_M1U instead
	of -1 when shifting.  Change type of val to unsigned HOST_WIDE_INT.
	Update prototype.

From-SVN: r227798

re PR tree-optimization/67470 (ICE at -O3 on x86_64-linux-gnu in compute_live_loop_exits, at tree-ssa-loop-manip.c:235)

2015-09-15  Richard Biener  <rguenther@suse.de>

	PR tree-optimization/67470
	* tree-ssa-loop-im.c (execute_sm_if_changed): Preserve PHI
	structure for PHI hoisting by inserting a forwarder block
	if appropriate.

	* gcc.dg/torture/pr67470.c: New testcase.

From-SVN: r227797

2015-09-15  Christian Bruel  <christian.bruel@st.com>

	* config/arm/arm.c (TARGET_OPTION_PRINT): Define.
	(arm_option_print): New function.

From-SVN: r227796

re PR target/52144 (ARM should support arm/thumb function attribute to permit different instruction sets in the same source)

2015-09-15  Christian Bruel  <christian.bruel@st.com>

	PR target/52144
	* config/arm/arm.c (arm_option_params_internal): Remove opts parameter.
	* config/arm/arm-c.c (arm_cpu_builtins): Declare static.
	Remove flags parameter.
	* config/arm/arm.h (TARGET_32BIT_P, TARGET_ARM_QBIT_P)
	(TARGET_ARM_SAT_P, TARGET_IDIV_P, TARGET_HAVE_LDREX_P)
	(TARGET_HAVE_LDREXBH_P, TARGET_HAVE_LDREXD_P, TARGET_DSP_MULTIPLY_P)
	(TARGET_ARM_FEATURE_LDREX_P, TARGET_INT_SIMD_P): Redefine macros with...
	(TARGET_ARM_SAT, TARGET_IDIV, TARGET_HAVE_LDREX)
	(TARGET_HAVE_LDREXBH, TARGET_HAVE_LDREXD, TARGET_ARM_FEATURE_LDREX)
	(TARGET_DSP_MULTIPLY, TARGET_INT_SIMD): Redefined macros.
	* gcc/config/arm/arm-protos.h (arm_cpu_builtins): Remove declaration.

From-SVN: r227795

gcc/:

	* config/aarch64/aarch64.h (AARCH64_VALID_SIMD_DREG_MODE): New.

	* config/aarch64/aarch64.c (aarch64_array_mode_supported_p): Add
	AARCH64_VALID_SIMD_DREG_MODE.

gcc/testsuite/:

	* gcc.target/aarch64/vect_int32x2x4_1.c: New.

From-SVN: r227794

	* config/aarch64/aarch64-simd.md (aarch64_ld2r<mode>,
	aarch64_ld3r<mode>, aarch64_ld4r<mode>): Combine together, making...
	(aarch64_simd_ld<VSTRUCT:nregs>r<VALLDIF:mode>): ...this.
	(aarch64_ld2_lane<mode>, aarch64_ld3_lane<mode>,
	aarch64_ld4_lane<mode>): Combine together, making...
	(aarch64_ld<VSTRUCT:nregs>_lane<VALLDIF:mode>): ...this.
	(aarch64_st2_lane<mode>, aarch64_st3_lane<mode>,
	aarch64_st4_lane<mode>): Combine together, making...
	(aarch64_st<VSTRUCT:nregs>_lane<VALLDIF:mode>): ...this.
	* config/aarch64/iterators.md (nregs): Add comment.

From-SVN: r227793

	* c-decl.c (lookup_label): Return NULL_TREE instead of 0.
	(lookup_tag): Change the type of THISLEVEL_ONLY to bool.
	Return NULL_TREE instead of 0.
	(lookup_name): Return NULL_TREE instead of 0.
	(lookup_name_in_scope): Likewise.
	(shadow_tag_warned): Use true instead of 1 and NULL_TREE instead of 0.
	(parser_xref_tag): Use false instead of 0.
	(start_struct): Use true instead of 1.
	(start_enum): Use true instead of 1 and NULL_TREE instead of 0.

From-SVN: r227791

	* config/aarch64/aarch64-simd.md (aarch64_simd_ld2r<mode>):
	Change operand mode from <V_TWO_ELEM> to BLK.
	(aarch64_vec_load_lanesoi_lane<mode>): Likewise.
	(aarch64_vec_store_lanesoi_lane<mode): Likewise
	(aarch64_ld2r<mode>): Generate MEM rtx with BLKmode, call set_mem_size.
	(aarch64_ld2_lane<mode>): Likewise.
	(aarch64_st2_lane<VQ:mode>): Likewise.
	* config/aarch64/iterators.md (V_TWO_ELEM): Remove.

From-SVN: r227790