Patch by Svante Signell.
    
    Reviewed-on: https://go-review.googlesource.com/c/161519

From-SVN: r268604

    
    Loosely based on a patch by Svante Signell.
    
    Reviewed-on: https://go-review.googlesource.com/c/161518

From-SVN: r268603

    
    Patch by Svante Signell.
    
    Reviewed-on: https://go-review.googlesource.com/c/161517

From-SVN: r268602

From-SVN: r268601

2019-02-06  Vladimir Makarov  <vmakarov@redhat.com>

	PR rtl-optimization/89225
	* lra-constaints.c (simplify_operand_subreg): Add subreg mode
	sizes check.

2019-02-06  Vladimir Makarov  <vmakarov@redhat.com>

	PR rtl-optimization/89225
	* gcc.target/powerpc/pr89225.c: New.

From-SVN: r268597

i386.c (ix86_expand_prologue): Emit a memory blockage after restoring registers saved to allocate the frame on...

	* config/i386/i386.c (ix86_expand_prologue): Emit a memory blockage
	after restoring registers saved to allocate the frame on Windows.

From-SVN: r268593

From-SVN: r268592

re PR go/89199 (libgo regression in implementation of CompareAndSwap functions resulting in intermittent testcase failures on ppc64le power9 after r268458)

	PR go/89199
    sync/atomic: use strong form of atomic_compare_exchange_n
    
    In the recent change to use atomic_compare_exchange_n I thought we
    could use the weak form, which can spuriously fail. But that is not
    how it is implemented in the gc library, and it is not what the rest
    of the library expects.
    
    Thanks to Lynn Boger for identifying the problem.
    
    Fixes https://gcc.gnu.org/PR89199
    
    Reviewed-on: https://go-review.googlesource.com/c/161359

From-SVN: r268591

2019-02-06  Thomas Koenig  <tkoenig@gcc.gnu.org>

	PR fortran/71860
	* gfortran.dg/null_10.f90: New test.

From-SVN: r268590

PR c++/71302 reports that g++ shows poor locations for
-Wzero-as-null-pointer-constant for pointers in function calls,
using the close parenthesis of the call, rather than showing the
pertinent argument.

This particular case was fixed in GCC 8, but regressed on trunk
in r260973.

This patch fixes the regression, and adds column numbers to the
test cases (where they're correct) to avoid regressing them in the
future.  There are still various places where the locations aren't
correct, but fixing them isn't stage 4 material.

gcc/cp/ChangeLog:
	PR c++/71302
	* call.c (get_location_for_expr_unwinding_for_system_header): New
	function.
	(conversion_null_warnings): Use it when getting locations for
	EXPR, effectively adding a call to
	get_location_for_expr_unwinding_for_system_header for
	-Wconversion-null and making use of EXPR_LOCATION for
	-Wzero-as-null-pointer-constant.

gcc/testsuite/ChangeLog:
	PR c++/71302
	* g++.dg/cpp0x/Wzero-as-null-pointer-constant-1.C: Add expected
	column numbers to dg-warning directives where they are correct.
	* g++.dg/warn/Wzero-as-null-pointer-constant-5.C: Likewise.
	* g++.dg/warn/Wzero-as-null-pointer-constant-7.C: Likewise.
	* g++.dg/warn/Wzero-as-null-pointer-constant-8.C: New test.

From-SVN: r268589

	PR debug/87451
	* gcc.dg/debug/dwarf2/inline5.c: Allow for non-comment before
	"(DIE (0x[0-9a-f]*) DW_TAG_variable".
	xfail scan-assembler-not with Solaris as.

From-SVN: r268588

From-SVN: r268587

This is a partial implementation of the revised std::common_type rules
from P0435R1.

	PR libstdc++/89102 (partial)
	* include/std/type_traits (common_type<>): Define.
	(common_type<T>): Derive from common_type<T, T>.
	* testsuite/20_util/common_type/requirements/explicit_instantiation.cc:
	Test zero-length template argument list.
	* testsuite/20_util/common_type/requirements/sfinae_friendly_1.cc:
	Test additional single argument cases.
	* testsuite/20_util/common_type/requirements/sfinae_friendly_2.cc:
	Adjust expected error.

From-SVN: r268586

2019-02-06  Bill Seurer  <seurer@linux.vnet.ibm.com>

	* gcc.target/powerpc/vsx-vector-6.p7.c: Update instruction
	counts and target.
	* gcc.target/powerpc/vsx-vector-6.p8.c: Update instruction
	counts and target.
	* gcc.target/powerpc/vsx-vector-6.p9.c: Update instruction
	counts and target.

From-SVN: r268585

    
    Reviewed-on: https://go-review.googlesource.com/c/161338

From-SVN: r268584

	* libgnarl/s-linux__x32.ads: Resync list of signals with s-linux.ads

From-SVN: r268576

2019-02-06  Richard Biener  <rguenther@suse.de>

	PR tree-optimization/89182
	* graphite.h (cached_scalar_evolution_in_region): Declare.
	* graphite.c (struct seir_cache_key): New.
	(struct sese_scev_hash): Likewise.
	(seir_cache): New global.
	(cached_scalar_evolution_in_region): New function.
	(graphite_transform_loops): Allocate and release seir_cache.
	* graphite-isl-ast-to-gimple.c (get_rename_from_scev): Use
	cached_scalar_evolution_in_region.
	* graphite-scop-detection.c (scop_detection::can_represent_loop):
	Simplify.
	(scop_detection::graphite_can_represent_expr: Use
	cached_scalar_evolution_in_region.
	(scop_detection::stmt_simple_for_scop_p): Likewise.
	(find_params_in_bb): Likewise.
	(gather_bbs::before_dom_children): Likewise.
	* graphite-sese-to-poly.c (create_pw_aff_from_tree): Likewise.
	(add_loop_constraints): Likewise.

	* gfortran.dg/graphite/pr89182.f90: New testcase.

From-SVN: r268575

	PR c/89211
	* c-parser.c (c_parser_declaration_or_fndef): Don't update
	DECL_ARGUMENTS of d if it has been defined already.  Use a single if
	instead of 3 nested ifs.

	* gcc.dg/pr89211.c: New test.

From-SVN: r268574

re PR middle-end/89210 (ICE tree check: expected integer_cst, have real_cst in to_wide, at tree.h:5600)

	PR middle-end/89210
	* fold-const-call.c (fold_const_vec_convert): Pass true as last
	operand to new_unary_operation only if both element types are integral
	and it isn't a widening conversion.  Return NULL_TREE if
	new_unary_operation failed.

	* c-c++-common/builtin-convertvector-2.c: New test.

From-SVN: r268573

gcc/go:
        PR go/89019
        * go-gcc.cc (Gcc_backend::placeholder_struct_type): Mark
        placeholder structs as requiring structural equality.
        (Gcc_backend::set_placeholder_pointer_type): Propagate the
	canonical type from the desired pointer type to the placeholder
	pointer type.
gcc/testsuite/:
        * lib/go-torture.exp: Test compiling with -flto.

From-SVN: r268572

As reported in bug 88584, if you have a file-scope array with external
linkage, initialized at file scope, and that array is shadowed at
block scope, and is declared again with external linkage and an
incomplete type in an inner scope, it is wrongly given a complete type
in that inner scope when the correct C semantics give it an incomplete
type (only the visible declarations contribute to the type in a given
scope).

In general, issues with the types of external linkage declarations
being different in different scopes were addressed by my fixes for bug
13801, for GCC 4.0.  In this case, however, the code in pushdecl
dealing with giving declarations the right type in each scope works
fine, and the type is subsequently modified by complete_array_type
called from finish_decl: finish_decl is trying to complete an array
type based on an initializer, but that's only correct for the original
initialization at file scope, not for such a declaration in an inner
scope (it's harmless but unnecessary in the case where the original
declaration is still visible in the inner scope).  Thus, this patch
changes finish_decl to stop this logic applying for such an external
declaration in an inner scope.  (An erroneous attempt to include an
initializer for an extern variable in an inner scope is diagnosed
elsewhere.)

This is a regression from GCC 3.4, which properly rejected the code in
question (quite likely by accident).

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

gcc/c:
	PR c/88584
	* c-decl.c (finish_decl): Do not complete array types for arrays
	with external linkage not at file scope.

gcc/testsuite:
	PR c/88584
	* gcc.dg/redecl-18.c: New test.

From-SVN: r268571

From-SVN: r268570

gcc/po:
	* be.po, da.po, de.po, el.po, es.po, fi.po, fr.po, hr.po, id.po,
	ja.po, nl.po, ru.po, sr.po, sv.po, tr.po, uk.po, vi.po, zh_CN.po,
	zh_TW.po: Update.

libcpp/po:
	* be.po, ca.po, da.po, de.po, el.po, eo.po, es.po, fi.po, fr.po,
	id.po, ja.po, nl.po, pr_BR.po, ru.po, sr.po, sv.po, tr.po, uk.po,
	vi.po, zh_CN.po, zh_TW.po: Update.

From-SVN: r268567

	PR libstdc++/89128
	* include/bits/stl_queue.h (queue, priority_queue): Add deduction
	guides.
	* include/bits/stl_stack.h (stack): Likewise.
	* testsuite/23_containers/priority_queue/deduction.cc: New test.
	* testsuite/23_containers/queue/deduction.cc: New test.
	* testsuite/23_containers/stack/deduction.cc: New test.

From-SVN: r268566

	PR c++/89187
	* optimize.c (maybe_thunk_body): Clear TREE_ADDRESSABLE on
	PARM_DECLs of the thunk.
	* lambda.c (maybe_add_lambda_conv_op): Likewise.

	* g++.dg/opt/pr89187.C: New test.

From-SVN: r268564

gcc/jit/ChangeLog:
2019-02-05  Andrea Corallo <andrea.corallo@arm.com>

	* docs/topics/compatibility.rst (LIBGCCJIT_ABI_11): New ABI tag.
	* docs/topics/contexts.rst (Additional driver options): New
	section.
	* jit-playback.c (invoke_driver): Add call to append_driver_options.
	* jit-recording.c: Within namespace gcc::jit...
	(recording::context::~context): Free the optnames within
	m_driver_options.
	(recording::context::add_driver_option): New method.
	(recording::context::append_driver_options): New method.
	(recording::context::dump_reproducer_to_file): Add driver
	options.
	* jit-recording.h: Within namespace gcc::jit...
	(recording::context::add_driver_option): New method.
	(recording::context::append_driver_options): New method.
	(recording::context::m_driver_options): New field.
	* libgccjit++.h (gccjit::context::add_driver_option): New
	method.
	* libgccjit.c (gcc_jit_context_add_driver_option): New API
	entrypoint.
	* libgccjit.h (gcc_jit_context_add_driver_option): New API
	entrypoint.
	(LIBGCCJIT_HAVE_gcc_jit_context_add_driver_option): New
	macro.
	* libgccjit.map (LIBGCCJIT_ABI_11): New ABI tag.

gcc/testsuite/ChangeLog:
2019-02-05  Andrea Corallo <andrea.corallo@arm.com>

	* jit.dg/add-driver-options-testlib.c: Add support file for
	test-add-driver-options.c testcase.
	* jit.dg/all-non-failing-tests.h: Add note about
	test-add-driver-options.c
	* jit.dg/jit.exp (jit-dg-test): Update to support
	add-driver-options-testlib.c compilation.
	* jit.dg/test-add-driver-options.c: New testcase.

From-SVN: r268563

	PR rtl-optimization/11304
	* gcc.target/i386/call-1.c (set_eax): Add "eax" clobber.
	* gcc.target/i386/call-2.c: New test.

From-SVN: r268562

	* call.c (convert_like_real) <case ck_user>: Call mark_exp_read
	instead of mark_rvalue_use.

	* g++.dg/cpp0x/lambda/lambda-89158.C: New test.

From-SVN: r268561

    
    Fixes golang/go#28186.
    
    Reviewed-on: https://go-review.googlesource.com/c/160832

From-SVN: r268554

On powerpc64-linux, this testcase complains the ABI for vector args
has changed, making the testcase fail (excess output).  This patch
shuts up that warning.


	* gcc.dg/vect/pr84711.c: Use -Wno-psabi.

From-SVN: r268553

gcc/ChangeLog:

2019-02-05  Andreas Krebbel  <krebbel@linux.ibm.com>

	PR target/88856
	* config/s390/s390.md: Remove load and test FP splitter.

From-SVN: r268550

2019-02-05  Aaron Sawdey  <acsawdey@linux.ibm.com>

	PR target/89112
	* config/rs6000/rs6000-string.c (do_ifelse, expand_cmp_vec_sequence,
	expand_compare_loop, expand_block_compare_gpr,
	expand_strncmp_align_check, expand_strncmp_gpr_sequence): Insert
	REG_BR_PROB notes in inline expansion of memcmp/strncmp. Add
	#include "profile-count.h" and "predict.h" for types and functions
	needed to work with REG_BR_PROB notes.

From-SVN: r268547

2019-02-05  Aaron Sawdey  <acsawdey@linux.ibm.com>

	PR target/89112
	* config/rs6000/rs6000.md (<bd>tf_<mode>): Generate a local label
	for the long branch case.

From-SVN: r268546

	* gcc.target/powerpc/vec-extract-sint128-1.c: Require int128 effective
	target.
	* gcc.target/powerpc/vec-extract-uint128-1.c: Likewise.

From-SVN: r268545

	PR target/89188
	* dce.c (delete_unmarked_insns): Don't remove no-op moves if they
	can throw, non-call exceptions are enabled and we can't delete
	dead exceptions or alter cfg.  Set must_clean if
	delete_insn_and_edges returns true, don't set it blindly for calls.
	Assert that delete_unreachable_blocks is called only if can_alter_cfg.

	* g++.dg/opt/pr89188.C: New test.

From-SVN: r268544

The additional logic added to __is_convertible_helper in order to
support is_nothrow_convertible makes some uses of is_convertible
ill-formed. This appears to be due to PR c++/87603, but can be avoided
just by defining a separate helper for is_nothrow_convertible. The same
problems are likely to still exist for is_nothrow_convertible, but that
is new and so won't cause regressions for existing users of
is_convertible.

	PR libstdc++/89194
	* include/std/type_traits (__is_convertible_helper)
	(__is_convertible_helper<_From, _To, false>): Revert changes to
	support is_nothrow_convertible.
	(__is_nt_convertible_helper): New helper.
	(is_nothrow_convertible): Use __is_nt_convertible_helper.

From-SVN: r268543

	PR rtl-optimization/89195
	* combine.c (make_extraction): For MEMs, don't extract bytes outside
	of the original MEM.

	* gcc.c-torture/execute/pr89195.c: New test.

From-SVN: r268542

gcc/testsuite/ChangeLog:

2019-02-05  Kelvin Nilsen  <kelvin@gcc.gnu.org>

	* gcc.target/powerpc/vec-extract-slong-1.c: Require p8 execution
	hardware.
	* gcc.target/powerpc/vec-extract-schar-1.c: Likewise.
	* gcc.target/powerpc/vec-extract-sint128-1.c: Likewise.
	* gcc.target/powerpc/vec-extract-sshort-1.c: Likewise.
	* gcc.target/powerpc/vec-extract-ulong-1.c: Likewise.
	* gcc.target/powerpc/vec-extract-uchar-1.c: Likewise.
	* gcc.target/powerpc/vec-extract-sint-1.c: Likewise.
	* gcc.target/powerpc/vec-extract-uint128-1.c: Likewise.
	* gcc.target/powerpc/vec-extract-ushort-1.c: Likewise.
	* gcc.target/powerpc/vec-extract-uint-1.c: Likewise.

From-SVN: r268541

re PR tree-optimization/88606 (ICE: verify_type failed (error: type variant differs by TYPE_TRANSPARENT_AGGR))

2019-02-05  Richard Biener  <rguenther@suse.de>

	PR c/88606
	* c-decl.c (finish_struct): Reset TYPE_TRANSPARENT_AGGR on
	all type variants when not supported.

From-SVN: r268540

Go back to using CopyConsOnlyType as before r265485, because it works
again now. Add test using DelAnyAssign for completeness and additional
coverage.

	* testsuite/23_containers/vector/modifiers/push_back/49836.cc: Restore
	use of CopyConsOnlyType, but also test DelAnyAssign for completeness.

From-SVN: r268539