PR target/68471
	PR target/68472
	* config/i386/i386.c (ix86_mitigate_rop): Don't call
	compute_bb_for_insn again.  Call df_insn_rescan_all.
	* config/i386/i386.md (set_got_rex64): Override modrm_class.

	* regrename.c (build_def_use): Ignore stack regs if regstack_completed.

testsuite/
	* gcc.target/i386/rop1.c: New test.

From-SVN: r231228

	gcc/
	* config/nvptx/nvptx-protos.h (npvptx_section_from_addr_space):	Delete.
	* config/nvptx/nvptx.c (enum nvptx_data_area): New.
	(SYMBOL_DATA_AREA, SET_SYMBOL_DATA_AREA): New defines.
	(nvptx_option_override): Set data ares for worker vars.
	(nvptx_addr_space_from_sym): Delete.
	(nvptx_encode_section_info): New.
	(section_for_sym, section_for_decl): New.
	(nvptx_maybe_convert_symbolic_operand): Get data area from symbol
	flags,
	(nvptx_section_from_addr_space): Delete.
	(nvptx_section_for_decl): Delete.
	(nvptx_output_aligned, nvptx_declare_object_name,
	nvptx_assemble_undefined_decl): Use section_for_decl, remove
	unnecessary checks.
	(nvptx_print_operand): Add 'D', adjust 'A'.
	(nvptx_expand_worker_addr): Adjust unspec generation.
	(TARGET_ENCODE_SECTION_INFO): Override.
	* config/nvptx/nvptx.h (ADDR_SPACE_GLOBAL, ADDR_SPACE_SHARED,
	ADDR_SPACE_CONST, ADDR_SPACE_LOCAL, ADDR_SPACE_PARAM): Delete.
	* config/nvptx/nvptx.md (UNSPEC_FROM_GLOBAL, UNSPEC_FROM_LOCAL,
	UNSPEC_FROM_PARAM, UNSPEC_FROM_SHARED, UNSPEC_FROM_CONST,
	UNSPEC_TO_GLOBAL, UNSPEC_TO_LOCAL, UNSPEC_TO_PARAM,
	UNSPEC_TO_SHARED, UNSPEC_TO_CONST): Delete.
	(UNSPEC_TO_GENERIC): New.
	(nvptx_register_or_symbolic_operand): Delete.
	(cvt_code, cvt_name, cvt_str): Delete.
	(convaddr_<cvt_name><mode> [P]): Delete.
	(convaddr_<mode> [P]): New.

	gcc/testsuite/
	* gcc.target/nvptx/decl.c: New.
	* gcc.target/nvptx/uninit-decl.c: Robustify regexps.

From-SVN: r231227

[RTL-ifcvt] PR rtl-optimization/68624: Clean up logic that checks for clobbering conflicts across basic blocks

	PR rtl-optimization/68624
	* ifcvt.c (noce_try_cmove_arith): Check clobbers of temp regs in both
	blocks if they exist and simplify the logic choosing the order to emit
	them in.

	* gcc.c-torture/execute/pr68624.c: New test.

From-SVN: r231226

2015-12-03  Richard Biener  <rguenther@suse.de>

	PR tree-optimization/66051
	* tree-vect-slp.c (vect_build_slp_tree_1): Remove restriction
	on load group size.  Do not pass in vectorization_factor.
	(vect_transform_slp_perm_load): Do not require any permute support.
	(vect_build_slp_tree): Do not pass in vectorization factor.
	(vect_analyze_slp_instance): Do not compute vectorization
	factor estimate.  Use vector size instead of vectorization factor
	estimate to split store groups for BB vectorization.

	* gcc.dg/vect/slp-42.c: New testcase.

From-SVN: r231225

cfgexpand.c (expand_gimple_stmt_1): Return statement with DECL as return value is allowed to have NULL bounds.

gcc/

	* cfgexpand.c (expand_gimple_stmt_1): Return statement with
	DECL as return value is allowed to have NULL bounds.

From-SVN: r231224

2015-12-03  Tom de Vries  <tom@codesourcery.com>

	* graphite-isl-ast-to-gimple.c (binary_op_to_tree)
	(gcc_expression_from_isl_expr_op): Guard isl_ast_op_zdiv_r usage with
	HAVE_ISL_OPTIONS_SET_SCHEDULE_SERIALIZE_SCCS.

From-SVN: r231223

From-SVN: r231222

re PR tree-optimization/67800 (Missed vectorization opportunity on x86 (DOT_PROD_EXPR in non-reduction))

2015-12-03  Richard Biener  <rguenther@suse.de>

	PR tree-optimization/67800
	PR tree-optimization/68333
	* tree-vect-patterns.c (vect_recog_dot_prod_pattern): Restore
	restriction to reduction contexts but allow SLP reductions as well.
	(vect_recog_sad_pattern): Likewise.
	(vect_recog_widen_sum_pattern): Likewise.

	* gcc.target/i386/vect-pr67800.c: New testcase.

From-SVN: r231221

2015-12-03  Richard Biener  <rguenther@suse.de>

	PR tree-optimization/68639
	* tree-vect-data-refs.c (dr_group_sort_cmp): Split groups
	belonging to different loops.
	(vect_analyze_data_ref_accesses): Likewise.

	* gfortran.fortran-torture/compile/pr68639.f90: New testcase.

From-SVN: r231220

	* ipa-pure-const.c (ignore_edge_for_pure_const): New function.
	(propagate_pure_const): Use it; fix comments and optimize loops.

From-SVN: r231219

	* ipa-pure-const.c (ignore_edge): Rename to ...
	(ignore_edge_for_nothrow) ... this one; also ignore eges to
	interposable functions or ones that can not throw.
	(propagate_nothrow): Fix handling of availability.

From-SVN: r231218

	PR ipa/68184
	* g++.dg/torture/pr68184.C: New testcase.
	* cgraphunit.c (cgraph_node::analyze): Set can_throw_external.

From-SVN: r231217

From-SVN: r231216

	PR preprocessor/57580
	* c-ppoutput.c (print): Change printed field to bool.
	Move src_file last for smaller padding.
	(init_pp_output): Set print.printed to false instead of 0.
	(scan_translation_unit): Fix up formatting.  Set print.printed
	to true after printing something other than newline.
	(scan_translation_unit_trad): Set print.printed to true instead of 1.
	(maybe_print_line_1): Set print.printed to false instead of 0.
	(print_line_1): Likewise.
	(do_line_change): Set print.printed to true instead of 1.
	(cb_define, dump_queued_macros, cb_include, cb_def_pragma,
	dump_macro): Set print.printed to false after printing newline.

	* c-c++-common/cpp/pr57580.c: New test.
	* c-c++-common/gomp/pr57580.c: New test.

From-SVN: r231213

From ISL's documentation, isl_ast_op_zdiv_r is equal to zero iff the remainder
on integer division is zero.  Code generate a modulo operation for that.

	* graphite-isl-ast-to-gimple.c (binary_op_to_tree): Handle isl_ast_op_zdiv_r.
        (gcc_expression_from_isl_expr_op): Same.

	* gcc.dg/graphite/id-28.c: New.

Co-Authored-By: Sebastian Pop <s.pop@samsung.com>

From-SVN: r231212

on the testcase we used to generate code in the function entry bb_0,
and that choked the cfg verifier.

	* graphite-isl-ast-to-gimple.c (copy_bb_and_scalar_dependences): Check
	that insertion point is still in the region.

	* gfortran.dg/graphite/id-26.f03: New.

Co-Authored-By: Sebastian Pop <s.pop@samsung.com>

From-SVN: r231211

gcc/cp/
	* Make-lang.in (check-c++1z, check-c++-all): New.
gcc/testsuite/
	* lib/g++.exp: Handle --stds= option.
	* lib/g++-dg.exp (g++-dg-runtest): Use it.

From-SVN: r231209

2015-12-02  Tobias Burnus  <burnus@net-b.de>
	    Alessandro Fanfarillo <fanfarillo.gcc@gmail.com>

	* check.c (gfc_check_event_query): New function.
	* dump-parse-tree.c (show_code_node): Handle EXEC_EVENT_POST,
	EXEC_EVENT_WAIT.
	* expr.c (gfc_check_vardef_context): New check for event variables
	definition.
	* gfortran.h (gfc_statement): Add ST_EVENT_POST, ST_EVENT_WAIT.
	(gfc_isym_id): GFC_ISYM_EVENT_QUERY.
	(struct symbol_attribute): New field.
	(gfc_exec_op): Add EXEC_EVENT_POST and EXEC_EVENT_WAIT.
	* gfortran.texi: Document about new events functions and minor
	changes.
	* interface.c (compare_parameter): New check.
	(gfc_procedure_use): New check for explicit procedure interface.
	(add_subroutines): Add event_query.
	* intrinsic.h (gfc_check_event_query,gfc_resolve_event_query):
	New prototypes.
	* iresolve.c (gfc_resolve_event_query): New function.
	* iso-fortran-env.def (event_type): New type.
	* match.c (event_statement,gfc_match_event_post,gfc_match_event_wait):
	New functions.
	(gfc_match_name): New event post and event wait.
	* match.h (gfc_match_event_post,gfc_match_event_wait):
	New prototypes.
	* module.c (ab_attribute): Add AB_EVENT_COMP.
	(attr_bits): Likewise.
	(mio_symbol_attribute): Handle event_comp attribute.
	* parse.c (decode_statement): Add ST_EVENT_POST, ST_EVENT_WAIT.
	(next_statement): Add ST_EVENT_POST, ST_EVENT_WAIT.
	(gfc_ascii_statement): Add ST_EVENT_POST, ST_EVENT_WAIT.
	(parse_derived): Check for event_type components.
	* resolve.c (resolve_allocate_expr): Check for event variable def.
	(resolve_lock_unlock): Renamed to resolve_lock_unlock_event. It
	includes logic for locks and events.
	(gfc_resolve_code): Call it.
	(gfc_resolve_symbol): New check for event variable to be a corray.
	* st.c (gfc_free_statement): Handle new EXEC_EVENT_POST and
	EXEC_EVENT_WAIT.
	* trans-decl.c (gfor_fndecl_caf_event_post,gfor_fndecl_caf_event_wait,
	gfor_fndecl_caf_event_query): New global variables.
	(generate_coarray_sym_init): Checking for event_type.
	(gfc_conv_procedure_call): Check for C bind attribute.
	* trans-intrinsic.c (conv_intrinsic_event_query): New function.
	(conv_intrinsic_move_alloc): Call it.
	* trans-stmt.c (gfc_trans_lock_unlock): Passing address
	of actual argument.
	(gfc_trans_sync): Likewise.
	(gfc_trans_event_post_wait): New function.
	* trans-stmt.h (gfc_trans_event_post_wait): New prototype.
	* trans-types.c (gfc_get_derived_type): Integer_kind as event_type.
	* trans.c (gfc_allocate_using_lib): New argument and logic for events.
	(gfc_allocate_allocatable): Passing new argument.
	(trans_code): Handle EXEC_EVENT_POST, EXEC_EVENT_WAIT.
	* trans.h (gfc_coarray_type): New elements.
	(gfor_fndecl_caf_event_post,gfor_fndecl_caf_event_wait,
	gfor_fndecl_caf_event_query): Declare them.

2015-12-02  Tobias Burnus  <burnus@net-b.de>
	    Alessandro Fanfarillo <fanfarillo.gcc@gmail.com>

	* gfortran.dg/coarray/event_1.f90: New.
	* gfortran.dg/coarray/event_2.f90: New.

Co-Authored-By: Alessandro Fanfarillo <fanfarillo.gcc@gmail.com>

From-SVN: r231208

In case ISL did some loop peeling, like this:

  S_8(0);
  for (int c1 = 1; c1 <= 5; c1 += 1) {
    S_8(c1);
  }
  S_8(6);

we should not copy loop-phi nodes in S_8(0) or in S_8(6).

	PR tree-optimization/68550
	* graphite-isl-ast-to-gimple.c (copy_loop_phi_nodes): Add dump.
	(copy_bb_and_scalar_dependences): Do not code generate loop peeled
	statements.

	* gfortran.dg/graphite/pr68550-1.f90: New.
	* gfortran.dg/graphite/pr68550-2.f90: New.

Co-Authored-By: Sebastian Pop <s.pop@samsung.com>

From-SVN: r231206

	PR c/68513
	* gcc.dg/pr68513.c: New test.

From-SVN: r231205

	gcc/fortran/
	PR fortran/63861
	* openmp.c (gfc_match_omp_clauses): Allow subarrays for acc reductions.
	(resolve_omp_clauses): Error on any acc reductions on arrays.

	gcc/testsuite/
	* gfortran.dg/goacc/array-reduction.f90: New test.
	* gfortran.dg/goacc/assumed.f95: Update expected diagnostics.
	* gfortran.dg/goacc/coarray.f95: Likewise.
	* gfortran.dg/goacc/coarray_2.f90: Likewise.
	* gfortran.dg/goacc/reduction-2.f95: Likewise.
	* gfortran.dg/goacc/reduction.f95: Likewise.

From-SVN: r231204

	PR c++/67337
	* mangle.c (write_template_prefix): Guard against context==NULL.

From-SVN: r231203

	* configure.ac: Check assembler support for R_PPC64_ENTRY relocation.
	* configure: Regenerate.
	* config.in: Regenerate.
	* config/rs6000/rs6000.c (rs6000_global_entry_point_needed_p): New
	function.
	(rs6000_output_function_prologue): Use it instead of checking
	cfun->machine->r2_setup_needed.  Use internal labels instead of
	GNU as local label extension.  Handle ELFv2 large code model.
	(rs6000_output_mi_thunk): Do not set cfun->machine->r2_setup_needed.
	(rs6000_elf_declare_function_name): Handle ELFv2 large code model.

From-SVN: r231202

re PR target/68647 (__builtin_popcountll doesn't generate popcnt instructions when targeting -mpopcnt on x86_32)

	PR target/68647
	* optabs.c (expand_doubleword_popcount, expand_doubleword_parity):
	New functions.
	(expand_unop): Use them.

	* gcc.target/i386/pr68647.c: New test.

From-SVN: r231201

	PR c++/68653
	* tree.c (nonnull_arg_p): Allow OFFSET_TYPE.

	* g++.dg/warn/nonnull3.C: New test.

From-SVN: r231200

./:	PR go/66147
	* Makefile.tpl (HOST_EXPORTS): Add XGCC_FLAGS_FOR_TARGET.
	* Makefile.in: Regenerate.
gotools/:
	PR go/66147
	* Makefile.am (GOCOMPILER): In NATIVE case, add
	$(XGCC_FLAGS_FOR_TARGET).

From-SVN: r231199

gcc/c-family/
	* c-common.c (fold_for_warn): New.
	(warn_logical_operator, warn_tautological_cmp)
	(check_function_arguments_recurse, maybe_warn_bool_compare): Use it.
gcc/cp/
	* call.c (build_new_op_1): Don't fold arguments to
	warn_logical_operator or maybe_warn_bool_compare.

From-SVN: r231198

	* cp-gimplify.c (cp_fold_maybe_rvalue, cp_fold_rvalue): New.
	(c_fully_fold): Use cp_fold_rvalue.
	(cp_fold): Use them for rvalue operands.

From-SVN: r231197

gcc/c-family/
	* c-common.c (c_disable_warnings, c_enable_warnings, c_fully_fold)
	(c_fully_fold_internal, decl_constant_value_for_optimization):
	Move to c/c-fold.c.
	* c-common.h: Don't declare decl_constant_value_for_optimization.
gcc/c/
	* c-fold.c (c_disable_warnings, c_enable_warnings, c_fully_fold)
	(c_fully_fold_internal, decl_constant_value_for_optimization):
	Move from c-common.c.
	* c-tree.h: Declare decl_constant_value_for_optimization.
	* Make-lang.in (C_AND_OBJC_OBJS): Add c-fold.o.
gcc/cp/
	* cp-gimplify.c (c_fully_fold): Define.

From-SVN: r231196

From-SVN: r231195

PR c/68162 reports a spurious warning about incompatible types
involving arrays of const double, constructed in one place using a
typedef for const double and in another place literally using const
double.

The problem is that the array of the typedef was incorrectly
constructed without a TYPE_MAIN_VARIANT being an array of unqualified
elements as it should be (though it seems some more recent change
resulted in this producing incorrect diagnostics, likely the support
for C++-style handling of arrays of qualified type).  This patch fixes
the logic in grokdeclarator to determine first_non_attr_kind, which is
used to determine whether it is necessary to use the TYPE_MAIN_VARIANT
of the type in the declaration specifiers.

However, fixing that logic introduces a failure of
gcc.dg/debug/dwarf2/pr47939-4.c, a test introduced along with
first_non_attr_kind.  Thus, it is necessary to track the original
qualified typedef when qualifying an array type, to use it rather than
a newly-constructed type, to avoid regressing regarding typedef names
in debug info.  This is done along lines I suggested in
<https://gcc.gnu.org/bugzilla/show_bug.cgi?id=47939#c6>: track the
original type and the number of levels of array indirection at which
it appears, and, in possibly affected cases, pass extra arguments to
c_build_qualified_type (with default arguments to avoid needing to
pass those extra arguments explicitly everywhere).  Given Richard's
recent fix to dwarf2out.c, this allows the C bug to be fixed without
causing debug information regressions.

Bootstrapped with no regressions on x86_64-pc-linux-gnu.

gcc/c:
	PR c/68162
	* c-decl.c (grokdeclarator): Set first_non_attr_kind before
	following link from declarator to next declarator.  Track original
	qualified type and pass it to c_build_qualified_type.
	* c-typeck.c (c_build_qualified_type): Add arguments
	orig_qual_type and orig_qual_indirect.

gcc/c-family:
	PR c/68162
	* c-common.h (c_build_qualified_type): Add extra default
	arguments.

gcc/cp:
	PR c/68162
	* tree.c (c_build_qualified_type): Add extra arguments.

gcc/testsuite:
	PR c/68162
	* gcc.dg/pr68162-1.c: New test.

From-SVN: r231194

2015-12-02  Matthias Klose  <doko@ubuntu.com>

        * configure.ac: Move AM_ENABLE_MULTILIB before
        GCC_LIBSTDCXX_RAW_CXX_FLAGS.
        * configure: Regenerate.

From-SVN: r231193

	* config/nvptx/nvptx.c (enum nvptx_shuffle_kind): New.  Absorb
	SHUFFLE defines.
	(nvptx_gen_shuffle, nvptx_print_operand, nvptx_expand_shuffle): Adjust.

From-SVN: r231192

While enabling graphite in -O3 we found a Fortran testcase that fails
because the max of the type domain is -1.  We used to add that as a constraint
to the elements accessed by the array, leading to a unfeasible constraint:
0 <= i <= -1.  Having that constraint, drops the data reference as that says
that there are no elements accessed in the array.

	* graphite-dependences.c (scop_get_reads): Add extra dumps.
	(scop_get_must_writes): Same.
	(scop_get_may_writes): Same.
	(compute_deps): Same.
	* graphite-sese-to-poly.c (bounds_are_valid): New.
	(pdr_add_data_dimensions): Call bounds_are_valid.

	* gfortran.dg/graphite/run-id-3.f90: New.

Co-Authored-By: Sebastian Pop <s.pop@samsung.com>

From-SVN: r231191

	* common.opt (flag_loop_optimize_isl): Renamed flag_loop_nest_optimize.
	* graphite-poly.c (apply_poly_transforms): Same.
	* graphite.c (gate_graphite_transforms): Same.
	* toplev.c (process_options): Same.

Co-Authored-By: Sebastian Pop <s.pop@samsung.com>

From-SVN: r231190

	PR c++/68290
	* constraint.cc (make_constrained_auto): Move to...
	* pt.c (make_auto_1): Add set_canonical parameter and set
	TYPE_CANONICAL on the type only if it is true.
	(make_decltype_auto): Adjust call to make_auto_1.
	(make_auto): Likewise.
	(splice_late_return_type): Likewise.
	(make_constrained_auto): ...here.  Call make_auto_1 instead of
	make_auto and pass false.  Set TYPE_CANONICAL directly.

From-SVN: r231189

	* config/mips/mips.c (mips_emit_probe_stack_range): Adjust.
	(mips_output_probe_stack_range): Rotate the loop and simplify.

From-SVN: r231188

2015-12-02  David Sherwood  <david.sherwood@arm.com>

    gcc/
	* config/aarch64/aarch64.md: New pattern.
	* config/aarch64/aarch64-simd.md: Likewise.
	* config/aarch64/iterators.md: New unspecs, iterators.
    gcc/testsuite
	* gcc.target/aarch64/fmaxmin.c: New test.

From-SVN: r231187

gcc/ChangeLog:

	* dwarf2out.c (dwar2out_var_location): In addition to notes,
	process indirect calls whose target is compile-time known.
	Enhance pattern matching to get the SYMBOL_REF they embed.
	(gen_subprogram_die): Handle such calls.
	* final.c (final_scan_insn): For call instructions, invoke the
	var_location debug hook only after the call has been emitted.

From-SVN: r231185

	gcc/c/
	* c-parser.c (c_parser_omp_clause_name)
	(c_parser_oacc_all_clauses): Alphabetical sorting.
	gcc/cp/
	* parser.c (cp_parser_omp_clause_name)
	(cp_parser_oacc_all_clauses): Alphabetical sorting.
	* pt.c (tsubst_omp_clauses): Handle OMP_CLAUSE_USE_DEVICE.
	gcc/testsuite/
	* c-c++-common/goacc/host_data-5.c: New file.
	* c-c++-common/goacc/host_data-6.c: Likewise.
	* gfortran.dg/goacc/coarray.f95: XFAIL.
	* gfortran.dg/goacc/coarray_2.f90: Adjust dg-excess-errors
	directive.
	* gfortran.dg/goacc/host_data-tree.f95: Remove dg-prune-output
	directive.
	libgomp/
	* testsuite/libgomp.oacc-c-c++-common/host_data-2.c: Restrict to
	target openacc_nvidia_accel_selected.
	* testsuite/libgomp.oacc-c-c++-common/host_data-4.c: Likewise.
	* testsuite/libgomp.oacc-c-c++-common/host_data-5.c: Likewise.
	* testsuite/libgomp.oacc-c-c++-common/host_data-3.c: Remove file.
	* testsuite/libgomp.oacc-c-c++-common/host_data-6.c: Remove file.

Co-Authored-By: James Norris <James_Norris@mentor.com>
Co-Authored-By: Julian Brown <julian@codesourcery.com>

From-SVN: r231184