* 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.

From-SVN: r259897

	* testsuite/20_util/remove_cvref/requirements/alias_decl.cc: New.
	* testsuite/20_util/remove_cvref/requirements/explicit_instantiation.cc:
	New.
	* testsuite/20_util/remove_cvref/value.cc: New.
	* testsuite/20_util/remove_cvref/value_ext.cc: New.

From-SVN: r259896

This change was a DR against C++11 and so should have been implemented
years ago.

	PR libstdc++/84087 LWG DR 2268 basic_string default arguments
	* include/bits/basic_string.h [_GLIBCXX_USE_CXX11_ABI=1]
	(append(const basic_string&, size_type, size_type)
	(assign(const basic_string&, size_type, size_type)
	(insert(size_type, const basic_string&, size_type, size_type)
	(replace(size_type,size_type,const basic_string&,size_type,size_type)
	(compare(size_type,size_type,constbasic_string&,size_type,size_type)):
	Add default arguments (LWG 2268).
	[_GLIBCXX_USE_CXX11_ABI=0]
	(append(const basic_string&, size_type, size_type)
	(assign(const basic_string&, size_type, size_type)
	(insert(size_type, const basic_string&, size_type, size_type)
	(replace(size_type,size_type,const basic_string&,size_type,size_type)
	(compare(size_type,size_type,constbasic_string&,size_type,size_type)):
	Likewise.
	* testsuite/21_strings/basic_string/dr2268.cc: New test.

From-SVN: r259895

The standard requires that the std::thread constructor is constrained so
it can't be called with a first argument of type std::thread. The
current implementation only meets that requirement if the constructor is
called with one argument, by using deleted overloads. This uses an
enable_if constraint to enforce the requirement for any number of
arguments.

Also add a static assertion to give a more readable error for invalid
arguments that cannot be invoked. Also simplify _Invoker to reduce the
error cascade for ill-formed instantiations with non-invocable
arguments.

	PR libstdc++/84535
	* include/std/thread (thread::__not_same): New SFINAE helper.
	(thread::thread(_Callable&&, _Args&&...)): Add SFINAE constraint that
	first argument is not a std::thread. Add static assertion to check
	INVOKE expression is valid.
	(thread::thread(thread&), thread::thread(const thread&&)): Remove.
	(thread::_Invoke::_M_invoke, thread::_Invoke::operator()): Use
	__invoke_result for return types and remove exception specifications.
	* testsuite/30_threads/thread/cons/84535.cc: New.

From-SVN: r259893

2018-05-03  Tom de Vries  <tom@codesourcery.com>

	PR testsuite/85106
	* lib/scanoffloadtree.exp: New file.

	* testsuite/lib/libgomp-dg.exp (libgomp-dg-test): Add save-temps to
	extra_tool_flags if it contains an -foffload=-fdump-* flag.
	* testsuite/lib/libgomp.exp: Include scanoffloadtree.exp.
	* testsuite/libgomp.oacc-c/vec.c: Use scan-offload-tree-dump.

	* doc/sourcebuild.texi (Commands for use in dg-final, Scan optimization
	dump files): Add offload-tree.

From-SVN: r259892

re PR tree-optimization/85615 (ICE at -O2 and above on valid code on x86_64-linux-gnu: in dfs_enumerate_from, at cfganal.c:1197)

2018-05-03  Richard Biener  <rguenther@suse.de>

	PR tree-optimization/85615
	* tree-ssa-threadupdate.c (thread_block_1): Only allow exits
	to loops not nested in BBs loop father to avoid creating multi-entry
	loops.

	* gcc.dg/torture/pr85615.c: New testcase.

From-SVN: r259891

[tree-complex.c] PR tree-optimization/70291: Inline floating-point complex multiplication more aggressively

We can improve the performance of complex floating-point multiplications by inlining the expansion a bit more aggressively.
We can inline complex x = a * b as:
x = (ar*br - ai*bi) + i(ar*bi + br*ai);
if (isunordered (__real__ x, __imag__ x))
  x = __muldc3 (a, b); //Or __mulsc3 for single-precision

That way the common case where no NaNs are produced we can avoid the libgcc call and fall back to the
NaN handling stuff in libgcc if either components of the expansion are NaN.

The implementation is done in expand_complex_multiplication in tree-complex.c and the above expansion
will be done when optimising for -O1 and greater and when not optimising for size.
At -O0 and -Os the single call to libgcc will be emitted.

For the code:
__complex double
foo (__complex double a, __complex double b)
{
  return a * b;
}

We will now emit at -O2 for aarch64:
foo:
        fmul    d16, d1, d3
        fmul    d6, d1, d2
        fnmsub  d5, d0, d2, d16
        fmadd   d4, d0, d3, d6
        fcmp    d5, d4
        bvs     .L8
        fmov    d1, d4
        fmov    d0, d5
        ret
.L8:
        stp     x29, x30, [sp, -16]!
        mov     x29, sp
        bl      __muldc3
        ldp     x29, x30, [sp], 16
        ret

Instead of just a branch to __muldc3.

	PR tree-optimization/70291
	* tree-complex.c (expand_complex_libcall): Add type, inplace_p
	arguments.  Change return type to tree.  Emit libcall as a new
	statement rather than replacing existing one when inplace_p is true.
	(expand_complex_multiplication_components): New function.
	(expand_complex_multiplication): Expand floating-point complex
	multiplication using the above.
	(expand_complex_division): Rename inner_type parameter to type.
	Update expand_complex_libcall call-site.
	(expand_complex_operations_1): Update expand_complex_multiplication
	and expand_complex_division call-sites.

	* gcc.dg/complex-6.c: New test.
	* gcc.dg/complex-7.c: Likewise.

From-SVN: r259889

	* include/std/future (__async_result_of): Use __invoke_result instead
	of result_of.

From-SVN: r259888

Also define __remove_cvref_t for internal use before C++2a.

	* include/std/any (any_cast): Use __remove_cvref_t.
	* include/std/tuple (__make_tuple): Likewise.
	* include/std/type_traits (__remove_cvref_t): Define.
	(__result_of_memobj, __result_of_memfun): Use __remove_cvref_t.
	[__cplusplus > 201703L] (remove_cvref, remove_cvref_t): Define.
	* include/std/variant (__erased_hash): Use __remove_cvref_t.

From-SVN: r259887

	PR other/85622
	* gcc_release: For -f, verify contrib/gennews has the major version
	pages listed and both index.html and changes.html have been updated
	for the new release.

From-SVN: r259881

2018-05-03  Richard Biener  <rguenther@suse.de>

	PR testsuite/85579
	* fortran.dg/pr51434.f90: Truncate transfer argument.

From-SVN: r259880

    
    These tests used to be disabled in the gofrontend since the go tool
    didn't support build IDs for the gofrontend. It does now, so enable
    the tests again.
    
    Reviewed-on: https://go-review.googlesource.com/111098

From-SVN: r259875

From-SVN: r259874

    
    This patch adds explicit references to various types and constants
    defined by the header files included by sysinfo.c (used to drive the
    generation of gen-sysinfo.go as part of the libgo build via the GCC
    "-fdump-go-spec" option).
    
    The intent is to enable clients to gather the same info generated by
    "-fdump-go-spec" by instead reading the generated DWARF from a
    sysinfo.o object file compiled with "-g". Some compilers (notably
    clang) try to omit DWARF records for a given type unless there is an
    explicit use of it in the translation unit; the additional references
    are to insure that everything we want to see in the DWARF shows up.
    
    Reviewed-on: https://go-review.googlesource.com/99063

From-SVN: r259868

    
    Reviewed-on: https://go-review.googlesource.com/90775

From-SVN: r259866

    
    We're never going to use stack.go for gccgo.  Although a build tag
    keeps it from being built, even having it around can be confusing.
    Remove it.
    
    Reviewed-on: https://go-review.googlesource.com/40774

From-SVN: r259865

    
    Move the list of libgo, gotool, and check-target packages into
    separate files, then read the file contents as part of the build
    process on the fly. This is intended to enable other build tooling to
    share the canonical list of target packages (avoid duplication).
    
    Reviewed-on: https://go-review.googlesource.com/89515

    libgo: revise rules for runtime.inc generation
    
    Refactor code for generating runtime.inc: extract out the relevant
    commands and place them in a separate shell script ("mkruntimeinc.sh").
    Update rules to avoid generating macros whose names begin with "$",
    such as "#define $sinkconst0 0".
    
    Reviewed-on: https://go-review.googlesource.com/85955

From-SVN: r259863

	PR target/85582
	* config/i386/i386.md (*ashl<dwi>3_doubleword_mask,
	*ashl<dwi>3_doubleword_mask_1, *<shift_insn><dwi>3_doubleword_mask,
	*<shift_insn><dwi>3_doubleword_mask_1): In condition require that
	the highest significant bit of the shift count mask is clear.  In
	check whether and[sq]i3 is needed verify that all significant bits
	of the shift count other than the highest are set.

	* gcc.c-torture/execute/pr85582-3.c: New test.

From-SVN: r259862

    
    The C portion of the Go runtime includes the header "unwind-pe.h" from
    libgcc, which contains some constants and a few small routines for
    decoding pointer values within unwind info. This patch gets rid of
    that include and instead adds a re-implementation of that
    functionality in the single file that uses it. The intent is to allow
    the C runtime portion of libgo to be built without a companion GCC
    installation.
    
    Reviewed-on: https://go-review.googlesource.com/90235

From-SVN: r259861

2018-05-02  François Dumont  <fdumont@gcc.gnu.org>

	* include/bits/deque.tcc (deque<>::_M_assign_aux): Cast to void to
	ensure overloaded comma not used.
	* include/bits/list.tcc (list<>::_M_assign_dispatch): Likewise.
	* include/bits/vector.tcc (vector<>::_M_assign_aux): Likewise.
	* include/bits/stl_bvector.h (vector<bool>::_M_assign_aux): Likewise.
	* testsuite/23_containers/deque/modifiers/assign/1.cc: New.
	* testsuite/23_containers/list/modifiers/assign/1.cc: New.
	* testsuite/23_containers/vector/bool/modifiers/assign/1.cc: New.
	* testsuite/23_containers/vector/modifiers/assign/1.cc: New.

From-SVN: r259856

The suggested resolution of LWG 3083 is to make invalid indices
undefined, but we can fairly easily check for them and treat them as
errors in the same way as allocation failure. This avoids a segfault or
worse, setting an error flag on the stream instead.

	PR libstdc++/68197
	* include/bits/ios_base.h (ios_base::iword, ios_base::pword): Cast
	indices to unsigned.
	* src/c++11/ios.cc (ios_base::_M_grow_words): Treat negative indices
	as failure. Refactor error handling.
	* testsuite/27_io/ios_base/storage/68197.cc: New.

From-SVN: r259854

/cp
2018-05-02  Paolo Carlini  <paolo.carlini@oracle.com>
	    Jason Merrill  <jason@redhat.com>

	PR c++/68374
	* name-lookup.c (check_local_shadow): Don't handle static old
	declarations in the block handling locals shadowing locals.

/testsuite
2018-05-02  Paolo Carlini  <paolo.carlini@oracle.com>
	    Jason Merrill  <jason@redhat.com>

	PR c++/68374
	* g++.dg/warn/Wshadow-13.C: New.
	* g++.dg/warn/Wshadow-14.C: Likewise.

Co-Authored-By: Jason Merrill <jason@redhat.com>

From-SVN: r259853

2018-05-02  Tom de Vries  <tom@codesourcery.com>

	PR libgomp/85411
	* plugin/plugin-nvptx.c (nvptx_exec): Move parsing of
	GOMP_OPENACC_DIM ...
	* env.c (parse_gomp_openacc_dim): ... here.  New function.
	(initialize_env): Call parse_gomp_openacc_dim.
	(goacc_default_dims): Define.
	* libgomp.h (goacc_default_dims): Declare.
	* oacc-plugin.c (GOMP_PLUGIN_acc_default_dim): New function.
	* oacc-plugin.h (GOMP_PLUGIN_acc_default_dim): Declare.
	* libgomp.map: New version "GOMP_PLUGIN_1.2". Add
	GOMP_PLUGIN_acc_default_dim.
	* testsuite/libgomp.oacc-c-c++-common/loop-default-runtime.c: New test.
	* testsuite/libgomp.oacc-c-c++-common/loop-default.h: New test.

From-SVN: r259852

2018-05-02  Tom de Vries  <tom@codesourcery.com>

	PR testsuite/83791
	* testsuite/libgomp.c++/udr-9.C: Update.
	* testsuite/libgomp.c++/atomic-16.C: Remove.
	* testsuite/libgomp.c++/cancel-taskgroup-2.C: Remove.
	* testsuite/libgomp.c++/loop-13.C: Remove.
	* testsuite/libgomp.c++/loop-14.C: Remove.
	* testsuite/libgomp.c++/loop-15.C: Remove.
	* testsuite/libgomp.c++/monotonic-1.C: Remove.
	* testsuite/libgomp.c++/monotonic-2.C: Remove.
	* testsuite/libgomp.c++/nonmonotonic-1.C: Remove.
	* testsuite/libgomp.c++/nonmonotonic-2.C: Remove.
	* testsuite/libgomp.c++/ordered-1.C: Remove.
	* testsuite/libgomp.c++/pr45784.C: Remove.
	* testsuite/libgomp.c++/pr64824.C: Remove.
	* testsuite/libgomp.c++/pr64868.C: Remove.
	* testsuite/libgomp.c++/pr66199-1.C: Remove.
	* testsuite/libgomp.c++/pr66199-2.C: Remove.
	* testsuite/libgomp.c++/pr66199-3.C: Remove.
	* testsuite/libgomp.c++/pr66199-4.C: Remove.
	* testsuite/libgomp.c++/pr66199-5.C: Remove.
	* testsuite/libgomp.c++/pr66199-6.C: Remove.
	* testsuite/libgomp.c++/pr66199-7.C: Remove.
	* testsuite/libgomp.c++/pr66199-8.C: Remove.
	* testsuite/libgomp.c++/pr66199-9.C: Remove.
	* testsuite/libgomp.c++/pr69389.C: Remove.
	* testsuite/libgomp.c++/simd10.C: Remove.
	* testsuite/libgomp.c++/simd11.C: Remove.
	* testsuite/libgomp.c++/simd12.C: Remove.
	* testsuite/libgomp.c++/simd13.C: Remove.
	* testsuite/libgomp.c++/target-1.C: Remove.
	* testsuite/libgomp.c++/target-3.C: Remove.
	* testsuite/libgomp.c++/target-4.C: Remove.
	* testsuite/libgomp.c++/target-5.C: Remove.
	* testsuite/libgomp.c++/taskgroup-1.C: Remove.
	* testsuite/libgomp.c++/taskloop-1.C: Remove.
	* testsuite/libgomp.c++/taskloop-2.C: Remove.
	* testsuite/libgomp.c++/taskloop-3.C: Remove.
	* testsuite/libgomp.c++/taskloop-4.C: Remove.
	* testsuite/libgomp.c++/udr-9.C: Remove.
	* testsuite/libgomp.c++/for-10.C: Remove.
	* testsuite/libgomp.c++/for-11.C: Remove.
	* testsuite/libgomp.c++/for-12.C: Remove.
	* testsuite/libgomp.c++/for-13.C: Remove.
	* testsuite/libgomp.c++/for-14.C: Remove.
	* testsuite/libgomp.c++/for-9.C: Remove.
	* testsuite/libgomp.c/atomic-18.c: Move ...
	* testsuite/libgomp.c-c++-common/atomic-18.c: ... here.
	* testsuite/libgomp.c/cancel-taskgroup-2.c: Move ...
	* testsuite/libgomp.c-c++-common/cancel-taskgroup-2.c: here.
	* testsuite/libgomp.c/loop-13.c: Move ...
	* testsuite/libgomp.c-c++-common/loop-13.c: ... here.
	* testsuite/libgomp.c/loop-14.c: Move ...
	* testsuite/libgomp.c-c++-common/loop-14.c: ... here.
	* testsuite/libgomp.c/loop-15.c: Remove.
	* testsuite/libgomp.c-c++-common/loop-15.c: New test.
	* testsuite/libgomp.c/monotonic-1.c: Move ...
	* testsuite/libgomp.c-c++-common/monotonic-1.c: ... here.
	* testsuite/libgomp.c/monotonic-2.c: Move ...
	* testsuite/libgomp.c-c++-common/monotonic-2.c: ... here.
	* testsuite/libgomp.c/nonmonotonic-1.c: Move ...
	* testsuite/libgomp.c-c++-common/nonmonotonic-1.c: ... here.
	* testsuite/libgomp.c/nonmonotonic-2.c: Move ...
	* testsuite/libgomp.c-c++-common/nonmonotonic-2.c: ... here.
	* testsuite/libgomp.c/ordered-4.c: Move ...
	* testsuite/libgomp.c-c++-common/ordered-4.c: ... here.
	* testsuite/libgomp.c/pr45784.c: Move ...
	* testsuite/libgomp.c-c++-common/pr45784.c: ... here.
	* testsuite/libgomp.c/pr64824.c: Move ...
	* testsuite/libgomp.c-c++-common/pr64824.c: ... here.
	* testsuite/libgomp.c/pr64868.c: Move ...
	* testsuite/libgomp.c-c++-common/pr64868.c: ... here.
	* testsuite/libgomp.c/pr66199-1.c: Move ...
	* testsuite/libgomp.c-c++-common/pr66199-1.c: ... here.
	* testsuite/libgomp.c/pr66199-2.c: Move ...
	* testsuite/libgomp.c-c++-common/pr66199-2.c: ... here.
	* testsuite/libgomp.c/pr66199-3.c: Move ...
	* testsuite/libgomp.c-c++-common/pr66199-3.c: ... here.
	* testsuite/libgomp.c/pr66199-4.c: Move ...
	* testsuite/libgomp.c-c++-common/pr66199-4.c: ... here.
	* testsuite/libgomp.c/pr66199-5.c: Move ...
	* testsuite/libgomp.c-c++-common/pr66199-5.c: ... here.
	* testsuite/libgomp.c/pr66199-6.c: Move ...
	* testsuite/libgomp.c-c++-common/pr66199-6.c: ... here.
	* testsuite/libgomp.c/pr66199-7.c: Move ...
	* testsuite/libgomp.c-c++-common/pr66199-7.c: ... here.
	* testsuite/libgomp.c/pr66199-8.c: Move ...
	* testsuite/libgomp.c-c++-common/pr66199-8.c: ... here.
	* testsuite/libgomp.c/pr66199-9.c: Move ...
	* testsuite/libgomp.c-c++-common/pr66199-9.c: ... here.
	* testsuite/libgomp.c/pr69389.c: Move ...
	* testsuite/libgomp.c-c++-common/pr69389.c: ... here.
	* testsuite/libgomp.c/simd-14.c: Move ...
	* testsuite/libgomp.c-c++-common/simd-14.c: ... here.
	* testsuite/libgomp.c/simd-15.c: Move ...
	* testsuite/libgomp.c-c++-common/simd-15.c: ... here.
	* testsuite/libgomp.c/simd-16.c: Move ...
	* testsuite/libgomp.c-c++-common/simd-16.c: ... here.
	* testsuite/libgomp.c/simd-17.c: Move ...
	* testsuite/libgomp.c-c++-common/simd-17.c: ... here.
	* testsuite/libgomp.c/target-1.c: Move ...
	* testsuite/libgomp.c-c++-common/target-1.c: ... here.
	* testsuite/libgomp.c/target-10.c: Move ...
	* testsuite/libgomp.c-c++-common/target-10.c: ... here.
	* testsuite/libgomp.c/target-13.c: Move ...
	* testsuite/libgomp.c-c++-common/target-13.c: ... here.
	* testsuite/libgomp.c/target-2.c: Move ...
	* testsuite/libgomp.c-c++-common/target-2.c: ... here.
	* testsuite/libgomp.c/taskgroup-1.c: Move ...
	* testsuite/libgomp.c-c++-common/taskgroup-1.c: ... here.
	* testsuite/libgomp.c/taskloop-1.c: Move ...
	* testsuite/libgomp.c-c++-common/taskloop-1.c: ... here.
	* testsuite/libgomp.c/taskloop-2.c: Move ...
	* testsuite/libgomp.c-c++-common/taskloop-2.c: ... here.
	* testsuite/libgomp.c/taskloop-3.c: Move ...
	* testsuite/libgomp.c-c++-common/taskloop-3.c: ... here.
	* testsuite/libgomp.c/taskloop-4.c: Move ...
	* testsuite/libgomp.c-c++-common/taskloop-4.c: ... here.
	* testsuite/libgomp.c/udr-1.c: Move ...
	* testsuite/libgomp.c-c++-common/udr-1.c: ... here.
	* testsuite/libgomp.c/for-1.c: Move ...
	* testsuite/libgomp.c-c++-common/for-1.c: ... here.
	* testsuite/libgomp.c/for-1.h: Move ...
	* testsuite/libgomp.c-c++-common/for-1.h: ... here.
	* testsuite/libgomp.c/for-2.c: Move ...
	* testsuite/libgomp.c-c++-common/for-2.c: ... here.
	* testsuite/libgomp.c/for-2.h: Move ...
	* testsuite/libgomp.c-c++-common/for-2.h: ... here.
	* testsuite/libgomp.c/for-3.c: Move ...
	* testsuite/libgomp.c-c++-common/for-3.c: ... here.
	* testsuite/libgomp.c/for-4.c: Move ...
	* testsuite/libgomp.c-c++-common/for-4.c: ... here.
	* testsuite/libgomp.c/for-5.c: Move ...
	* testsuite/libgomp.c-c++-common/for-5.c: ... here.
	* testsuite/libgomp.c/for-6.c: Move ...
	* testsuite/libgomp.c-c++-common/for-6.c: ... here.

From-SVN: r259851

2018-05-02  Tom de Vries  <tom@codesourcery.com>

	PR libgomp/82428
	* builtins.def (DEF_GOACC_BUILTIN_ONLY): Define.
	* omp-builtins.def (BUILT_IN_GOACC_PARLEVEL_ID)
	(BUILT_IN_GOACC_PARLEVEL_SIZE): New builtin.
	* builtins.c (expand_builtin_goacc_parlevel_id_size): New function.
	(expand_builtin): Call expand_builtin_goacc_parlevel_id_size.
	* doc/extend.texi (Other Builtins): Add __builtin_goacc_parlevel_id and
	__builtin_goacc_parlevel_size.

	* f95-lang.c (DEF_GOACC_BUILTIN_ONLY): Define.

	* c-c++-common/goacc/builtin-goacc-parlevel-id-size-2.c: New test.
	* c-c++-common/goacc/builtin-goacc-parlevel-id-size.c: New test.

	* testsuite/libgomp.oacc-c-c++-common/gang-static-2.c: Use
	__builtin_goacc_parlevel_{id,size}.
	* testsuite/libgomp.oacc-c-c++-common/loop-auto-1.c: Same.
	* testsuite/libgomp.oacc-c-c++-common/loop-dim-default.c: Same.
	* testsuite/libgomp.oacc-c-c++-common/loop-g-1.c: Same.
	* testsuite/libgomp.oacc-c-c++-common/loop-g-2.c: Same.
	* testsuite/libgomp.oacc-c-c++-common/loop-gwv-1.c: Same.
	* testsuite/libgomp.oacc-c-c++-common/loop-red-g-1.c: Same.
	* testsuite/libgomp.oacc-c-c++-common/loop-red-gwv-1.c: Same.
	* testsuite/libgomp.oacc-c-c++-common/loop-red-v-1.c: Same.
	* testsuite/libgomp.oacc-c-c++-common/loop-red-v-2.c: Same.
	* testsuite/libgomp.oacc-c-c++-common/loop-red-w-1.c: Same.
	* testsuite/libgomp.oacc-c-c++-common/loop-red-w-2.c: Same.
	* testsuite/libgomp.oacc-c-c++-common/loop-red-wv-1.c: Same.
	* testsuite/libgomp.oacc-c-c++-common/loop-v-1.c: Same.
	* testsuite/libgomp.oacc-c-c++-common/loop-w-1.c: Same.
	* testsuite/libgomp.oacc-c-c++-common/loop-wv-1.c: Same.
	* testsuite/libgomp.oacc-c-c++-common/parallel-dims.c: Same.
	* testsuite/libgomp.oacc-c-c++-common/routine-g-1.c: Same.
	* testsuite/libgomp.oacc-c-c++-common/routine-gwv-1.c: Same.
	* testsuite/libgomp.oacc-c-c++-common/routine-v-1.c: Same.
	* testsuite/libgomp.oacc-c-c++-common/routine-w-1.c: Same.
	* testsuite/libgomp.oacc-c-c++-common/routine-wv-1.c: Same.
	* testsuite/libgomp.oacc-c-c++-common/routine-wv-2.c: Same.
	* testsuite/libgomp.oacc-c-c++-common/tile-1.c: Same.

From-SVN: r259850

re PR c/30552 (gcc crashes when compiling examples with GNU statement expressions in VLAs (also involved: nested functions declared K&R-style))

	PR c/30552
	* c-decl.c (old_style_parameter_scope): New function.
	* c-parser.c (c_parser_postfix_expression): Check for statement
	expressions in old-style function parameter list declarations.
	* c-parser.h (old_style_parameter_scope): New extern declaration.

	PR c/30552
	* gcc.dg/noncompile/pr30552-1.c: New test.
	* gcc.dg/noncompile/pr30552-2.c: New test.
	* gcc.dg/noncompile/pr30552-3.c: New test.
	* gcc.dg/noncompile/pr30552-4.c: New test.

From-SVN: r259849

From-SVN: r259845

Store nested closures by value not by reference, to prevent holding
invalid references to temporaries that have been destroyed. This
changes the layout of the closure types, so change their linkage names,
but moving them to a different namespace.

	PR libstdc++/57997
	PR libstdc++/83860
	* include/bits/gslice_array.h (gslice_array): Define default
	constructor as deleted, as per C++11 standard.
	* include/bits/mask_array.h (mask_array): Likewise.
	* include/bits/slice_array.h (slice_array): Likewise.
	* include/bits/valarray_after.h (_GBase, _GClos, _IBase, _IClos): Move
	to namespace __detail.
	(_GBase::_M_expr, _IBase::_M_expr): Use _ValArrayRef for type of data
	members.
	* include/bits/valarray_before.h (_ValArrayRef): New helper for type
	of data members in closure objects.
	(_FunBase, _ValFunClos, _RefFunClos, _UnBase, _UnClos, _BinBase)
	(_BinBase2, _BinBase1, _BinClos, _SBase, _SClos): Move to namespace
	__detail.
	(_FunBase::_M_expr, _UnBase::_M_expr, _BinBase::_M_expr1)
	(_BinBase::_M_expr2, _BinBase2::_M_expr1, _BinBase1::_M_expr2)
	(_SBase::_M_expr): Use _ValArrayRef for type of data members.
	* include/std/valarray (_UnClos, _BinClos, _SClos, _GClos, _IClos)
	(_ValFunClos, _RefFunClos): Move to namespace __detail and add
	using-declarations to namespace std.
	* testsuite/26_numerics/valarray/83860.cc: New.

From-SVN: r259844

	* testsuite/backward/strstream_move.cc: Remove duplicate function
	call.

From-SVN: r259843

In libstdc++ the deprecated char* streams are non-copyable, as was
required pre-C++11.

Since C++11 the standard implies that those streams should be copyable,
but doesn't specify the effects of copying them. This is surely a
defect, so for consistency with other implementations this change makes
them movable, but not copyable.

	PR libstdc++/69608
	* include/backward/strstream (strstreambuf): Define move constructor
	and move assignment operator.
	(istrstream, ostrstream, strstream): Likewise.
	* testsuite/backward/strstream_move.cc: New.

From-SVN: r259842

re PR tree-optimization/85597 (internal compiler error: in compute_live_loop_exits, at tree-ssa-loop-manip.c:229)

2018-05-02  Richard Biener  <rguenther@suse.de>

	PR tree-optimization/85597
	* tree-vect-stmts.c (vectorizable_operation): For ternary SLP
	do not use split vect_get_vec_defs call but call vect_get_slp_defs
	directly.

	* gcc.dg/vect/pr85597.c: New testcase.

From-SVN: r259840

2018-05-02  Tom de Vries  <tom@codesourcery.com>

	PR testsuite/85106
	* gcc.dg/ipa/ipa-icf-38.c: Use scan-ltrans-tree-dump.
	* lib/scanltranstree.exp: New file.
	* lib/target-supports.exp (scan-ltrans-tree-dump_required_options)
	(scan-ltrans-tree-dump-times_required_options)
	(scan-ltrans-tree-dump-not_required_options)
	(scan-ltrans-tree-dump-dem_required_options)
	(scan-ltrans-tree-dump-dem-not_required_options): New proc.
	* lib/gcc-dg.exp: Include scanltranstree.exp.

	* testsuite/lib/libatomic.exp: Include scanltranstree.exp.

	* testsuite/lib/libgomp.exp: Include scanltranstree.exp.

	* testsuite/lib/libitm.exp: Include scanltranstree.exp.

	* testsuite/lib/libvtv.exp: Include scanltranstree.exp.

	* doc/sourcebuild.texi (Commands for use in dg-final, Scan optimization
	dump files): Add ltrans-tree.

From-SVN: r259838

2018-05-02  Tom de Vries  <tom@codesourcery.com>

	PR testsuite/85106
	* gcc.dg/ipa/ipa-icf-38.c: New test.
	* gcc.dg/ipa/ipa-icf-38a.c: New test.
	* lib/scandump.exp (dump-base): New proc.
	(scan-dump, scan-dump-times, scan-dump-not, scan-dump-dem)
	(scan-dump-dem-not): Add and handle parameter for suffix of the dump
	base.
	* lib/scanipa.exp: Add "" argument to scan-dump calls.
	* lib/scanlang.exp: Same.
	* lib/scanrtl.exp: Same.
	* lib/scantree.exp: Same.
	* lib/scanwpaipa.exp: New file.
	* lib/gcc-dg.exp: Include scanwpaipa.exp.

	* testsuite/lib/libatomic.exp: Include scanwpaipa.exp.

	* testsuite/lib/libgomp.exp: Include scanwpaipa.exp.

	* testsuite/lib/libitm.exp: Include scanwpaipa.exp.

	* testsuite/lib/libvtv.exp: Include scanwpaipa.exp.

	* doc/sourcebuild.texi (Commands for use in dg-final, Scan optimization
	dump files): Add wpa-ipa.

From-SVN: r259837

This removes paired single (used on the 750CL and friends).  It was
deprecated in GCC 8.  Removing it means we only have one vector model
to deal with (VMX+VSX, 16-byte vectors).


	* config.gcc (powerpc*-*-*): Remove paired.h.  Unsupport the
	powerpc*-*-linux*paired* target.
	* config/rs6000/750cl.h: Delete.
	* config/rs6000/paired.h: Delete.
	* config/rs6000/paired.md: Delete.
	* config/rs6000/predicates.md (easy_vector_constant): Remove paired
	float support.
	* config/rs6000/rs6000-builtin.def: Remove paired float support.
	* config/rs6000/rs6000-c.c (rs6000_target_modify_macros): Update
	comment.  Remove paired float support.
	* config/rs6000/rs6000-modes.def: Remove V2SF and V2SI.
	* config/rs6000/rs6000-opts.h (enum rs6000_vector): Delete
	VECTOR_PAIRED.
	* config/rs6000/rs6000-protos.h (paired_expand_vector_init,
	paired_emit_vector_cond_expr, paired_expand_vector_move): Delete
	declarations.
	* config/rs6000/rs6000.c: Remove paired float support.
	(paired_expand_vector_init, paired_expand_vector_move,
	paired_emit_vector_compare, paired_emit_vector_cond_expr,
	(paired_expand_lv_builtin, paired_expand_stv_builtin,
	paired_expand_builtin, paired_expand_predicate_builtin,
	paired_init_builtins): Delete.
	* config/rs6000/rs6000.h: Remove paired float support.
	* config/rs6000/rs6000.md: Remove paired float support.
	(move_from_CR_ov_bit): Delete.
	* config/rs6000/rs6000.opt (mpaired): Delete.
	* config/rs6000/t-rs6000: Remove paired.md from MD_INCLUDES.
	* doc/invoke.texi (RS/6000 and PowerPC Options): Delete -mpaired.

From-SVN: r259833

ATTRIBUTE_NONSTRING

	* ansidecl.h (ATTRIBUTE_NONSTRING): Define.

From-SVN: r259832

From-SVN: r259828

re PR middle-end/85567 (internal compiler error: in gimplify_modify_expr, at gimplify.c:5797 when using sincos())

2018-05-02  Richard Biener  <rguenther@suse.de>

	PR middle-end/85567
	* gimplify.c (gimplify_save_expr): When in SSA form allow
	SAVE_EXPRs to compute to SSA vars.

	* gcc.dg/torture/pr85567.c: New testcase.

From-SVN: r259826

	PR target/85582
	* config/i386/i386.md (*ashl<dwi>3_doubleword_mask,
	*ashl<dwi>3_doubleword_mask_1, *<shift_insn><dwi>3_doubleword_mask,
	*<shift_insn><dwi>3_doubleword_mask_1): If and[sq]i3 is needed, don't
	clobber operands[2], instead use a new pseudo.  Formatting fixes.

	* gcc.c-torture/execute/pr85582-1.c: New test.
	* gcc.c-torture/execute/pr85582-2.c: New test.

From-SVN: r259825

The problem in this PR was that we didn't consider aliases between
writes in the same strided group.  After tightening the early exit
we get the expected abs(step) >= 2 versioning check.

2018-05-02  Richard Sandiford  <richard.sandiford@linaro.org>

gcc/
	PR tree-optimization/85586
	* tree-vect-data-refs.c (vect_analyze_data_ref_dependence): Only
	exit early for statements in the same group if the accesses are
	not strided.

gcc/testsuite/
	PR tree-optimization/85586
	* gcc.dg/vect/pr85586.c: New test.

From-SVN: r259822

2018-05-02  Tom de Vries  <tom@codesourcery.com>

	PR lto/85451
	* lto-wrapper.c (compile_offload_image): Add "could not find mkoffload"
	error message.

From-SVN: r259821