re PR target/85530 ([X86] _mm512_mullox_epi64 and _mm512_mask_mullox_epi64 not implemented)

PR target/85530
* config/i386/avx512fintrin.h (_mm512_mullox_epi64,
_mm512_mask_mullox_epi64): New intrinsics.

* gcc.target/i386/avx512f-vpmullq-1.c: New test.
* gcc.target/i386/avx512f-vpmullq-2.c: New test.
* gcc.target/i386/avx512dq-vpmullq-3.c: New test.
* gcc.target/i386/avx512dq-vpmullq-4.c: New test.

From-SVN: r259903

PR libstdc++/84769 qualify call to std::get<0>

PR libstdc++/84769
* include/std/variant (visit): Qualify std::get call.

From-SVN: r259902

PR libstdc++/85632 fix wraparound in filesystem::space

On 32-bit targets any values over 4GB would wrap and produce the wrong
result.

PR libstdc++/85632 use uintmax_t for arithmetic
* src/filesystem/ops.cc (experimental::filesystem::space): Perform
arithmetic in result type.
* src/filesystem/std-ops.cc (filesystem::space): Likewise.
* testsuite/27_io/filesystem/operations/space.cc: Check total capacity
is greater than free space.
* testsuite/experimental/filesystem/operations/space.cc: New.

From-SVN: r259901

compiler: avoid crashing on invalid non-integer array length

    Tweak the array type checking code to avoid crashing on array types
    whose length expressions are explicit non-integer types (for example,
    "float64(10)"). If such constructs are seen, issue an "invalid array
    bound" error.

    Fixes golang/go#13486.

    Reviewed-on: https://go-review.googlesource.com/91975

From-SVN: r259900

Update .po files.

* 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

Add tests for std::remove_cvref

* 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

PR libstdc++/84087 add default arguments to basic_string members (LWG 2268)

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

PR libstdc++/84535 constrain std::thread constructor

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

[testsuite] Add scan-offload-tree-dump

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

Use std::invoke_result in std::async instead of std::result_of

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

From-SVN: r259888

Define std::remove_cvref and std::remove_cvref_t for C++2a

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

re PR other/85622 (gcc-8.1.0/NEWS says it's not released yet)

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

re PR fortran/85579 (accepts invalid fortran test case gfortran.dg/pr51434.f90)

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

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

From-SVN: r259880

cmd/go: run tests that require package build IDs

    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

Daily bump.

From-SVN: r259874

libgo: add type/const references to sysinfo.c

    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

libgo: add support for the Nios II architecture

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

From-SVN: r259866

runtime: remove unused stack.go

    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

libgo: refactor code to enumerate stdlib packages

    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

re PR target/85582 (wrong code at -O1 and above on x86_64-linux-gnu in 32-bit mode)

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

libgo: break dependence on libgcc unwind-pe.h

    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

deque.tcc (deque<>::_M_assign_aux): Cast to void to ensure overloaded comma not used.

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

PR libstdc++/68197 fail on negative iword/pword indices

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

re PR c++/68374 (G++ -Wshadow doesn't warn about static member shadowing)

/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

[openacc] Move GOMP_OPENACC_DIM parsing out of nvptx plugin

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

[libgomp, testsuite] Move tests to libgomp.c-c++-common

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

[openacc] Add __builtin_goacc_parlevel_{id,size}

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

* es.po: Update.

From-SVN: r259845

PR libstdc++/83860 avoid dangling references in valarray closure types

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

Remove duplicate function call in test

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

From-SVN: r259843

PR libstdc++/69608 Move semantics for strstreambuf

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

[testsuite] Add scan-ltrans-tree-dump

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

[testsuite] Add scan-wpa-ipa-dump

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

rs6000: Remove paired single

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

ansidecl.h (ATTRIBUTE_NONSTRING): Define.

ATTRIBUTE_NONSTRING

* ansidecl.h (ATTRIBUTE_NONSTRING): Define.

From-SVN: r259832

* gennews (files): Add files for GCC 8.

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

re PR target/85582 (wrong code at -O1 and above on x86_64-linux-gnu in 32-bit mode)

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

Tighten early exit in vect_analyze_data_ref_dependence (PR85586)

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

[lto] Add "could not find mkoffload" error message to lto-wrapper

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

Plugin API to get the list of wrap symbols.

This was approved for the binutils gold linker.
2018-05-01  Sriraman Tallam  <tmsriram@google.com>

* plugin-api.h: Add plugin API to get the list of wrap
symbols.

From-SVN: r259820

Add support for gcc as git submodule of another repository.

contrib/
* gcc_update: Check for .git as a file.

From-SVN: r259819

Daily bump.

From-SVN: r259818

PR libstdc++/84654 Disable __float128 specializations for -mno-float128

2018-05-01  Tulio Magno Quites Machado Filho  <tuliom@linux.vnet.ibm.com>

PR libstdc++/84654
* acinclude.m4: Set ENABLE_FLOAT128 instead of _GLIBCXX_USE_FLOAT128.
* config.h.in: Remove references to _GLIBCXX_USE_FLOAT128.
* configure: Regenerate.
* include/Makefile.am: Replace the value of _GLIBCXX_USE_FLOAT128
based on ENABLE_FLOAT128.
* include/Makefile.in: Regenerate.
* include/bits/c++config: Define _GLIBCXX_USE_FLOAT128.
[!defined(__FLOAT128__) && !defined(__SIZEOF_FLOAT128__)]: Undefine
_GLIBCXX_USE_FLOAT128.

From-SVN: r259813

Generalize a<b&a<c -> a<min(b,c)

2018-05-01  Marc Glisse  <marc.glisse@inria.fr>

PR tree-optimization/85143
gcc/
* match.pd (A<B&A<C): Extend to BIT_IOR_EXPR.

gcc/testsuite/
* gcc.dg/tree-ssa/minmax-loopend.c: Extend and split...
* gcc.dg/tree-ssa/minmax-loopend-2.c: ... here.

From-SVN: r259812

* gcc.pot: Regenerate.

From-SVN: r259810

[nvptx] Improve "offload compiler not found" message in mkoffload

2018-05-01  Tom de Vries  <tom@codesourcery.com>

PR lto/85451
* config/nvptx/mkoffload.c (main): Suggest using -B in "offload compiler
not found" error message.

From-SVN: r259809

Add VEC_ORDERED_REMOVE_IF

2018-05-01  Tom de Vries  <tom@codesourcery.com>

PR other/83786
* vec.h (VEC_ORDERED_REMOVE_IF, VEC_ORDERED_REMOVE_IF_FROM_TO): Define.
* vec.c (test_ordered_remove_if): New function.
(vec_c_tests): Call test_ordered_remove_if.
* dwarf2cfi.c (connect_traces): Use VEC_ORDERED_REMOVE_IF_FROM_TO.
* lto-streamer-out.c (prune_offload_funcs): Use VEC_ORDERED_REMOVE_IF.
* tree-vect-patterns.c (vect_pattern_recog_1): Use
VEC_ORDERED_REMOVE_IF.

From-SVN: r259808

-Wformat: fix nonsensical "wide character" message (PR c/84258)

gcc/c-family/ChangeLog:
PR c/84258
* c-format.c (struct format_check_results): Add field
"number_non_char".
(check_format_info): Initialize it, and warn if encountered.
(check_format_arg): Distinguish between wide char and
everything else when detecting arrays of non-char.

gcc/testsuite/ChangeLog:
PR c/84258
* c-c++-common/Wformat-pr84258.c: New test.

From-SVN: r259807

re PR tree-optimization/82665 (missing value range optimization for memchr)

PR tree-optimization/82665
* vr-values.c (vr_values::extract_range_from_binary_expr): Handle
pointer subtraction where arguments come from a memchr call.

        PR tree-optimization/82665
* gcc.dg/tree-ssa/pr82665.c: New test.

From-SVN: r259806

PR c++/85587 - error with scoped enum in template.

* semantics.c (finish_qualified_id_expr): Don't return an
unqualified IDENTIFIER_NODE.

From-SVN: r259805

configure.ac (LD_AS_NEEDED_OPTION, [...]): Use --push-state --as-needed and --pop-state instead of --as-needed and...

* configure.ac (LD_AS_NEEDED_OPTION, LD_NO_AS_NEEDED_OPTION): Use
--push-state --as-needed and --pop-state instead of --as-needed and
--no-as-needed if ld supports it.
* configure: Regenerated.

From-SVN: r259803

Add the Netronome Flow Processor (nfp) as a build target to the top-level configure.ac file.

* configure.ac: Added "nfp" target.
* configure: Regenerate.

From-SVN: r259800

re PR web/85578 (broken links in gcc-8.0.1-RC-20180427/INSTALL/specific.html, and out of date prerequisites.html)

PR web/85578
* doc/install.texi2html: Replace _002d with - and _002a with * in
generated html files using sed.

From-SVN: r259799

re PR go/85429 (Several gotools tests FAIL with Solaris as)

PR go/85429
    cmd/go: support more Solaris assembler syntaxes

    Patch by Rainer Orth.

    Reviewed-on: https://go-review.googlesource.com/110563

From-SVN: r259797

PR c++/85580 - extern "C" and local variables

* name-lookup.c (check_extern_c_conflict): Ignore local decls.

From-SVN: r259793

Daily bump.

From-SVN: r259787

Add gcc_rich_location::add_fixit_insert_formatted

This patch adds a support function to class gcc_rich_location
to make it easier for fix-it hints to use idiomatic C/C++
indentation, for use by the patch for PR c++/85523.

gcc/ChangeLog:
PR c++/85523
* gcc-rich-location.c (blank_line_before_p): New function.
(use_new_line): New function.
(gcc_rich_location::add_fixit_insert_formatted): New function.
* gcc-rich-location.h
(gcc_rich_location::add_fixit_insert_formatted): New function.

gcc/testsuite/ChangeLog:
PR c++/85523
* gcc.dg/plugin/diagnostic-test-show-locus-generate-patch.c
(test_add_fixit_insert_formatted_single_line): New function.
(test_add_fixit_insert_formatted_multiline): New function.
Extend expected output of generated patch to include fix-it hints
for these.
* gcc.dg/plugin/diagnostic_plugin_test_show_locus.c: Include
"gcc-rich-location.h".  Add test coverage for
gcc_rich_location::add_fixit_insert_formatted.

From-SVN: r259783

selftest: remove "Yoda ordering" in assertions

gcc/ChangeLog:
* selftest.c (assert_streq): Rename "expected" and "actual" to
"val1" and "val2".  Extend NULL-handling to cover both inputs
symmetrically, while still requiring both to be non-NULL for a pass.
* selftest.h (assert_streq): Rename "expected" and "actual" to
"val1" and "val2".
(ASSERT_EQ): Likewise.
(ASSERT_EQ_AT): Likewise.
(ASSERT_KNOWN_EQ): Likewise.
(ASSERT_KNOWN_EQ_AT): Likewise.
(ASSERT_NE): Likewise.
(ASSERT_MAYBE_NE): Likewise.
(ASSERT_MAYBE_NE_AT): Likewise.
(ASSERT_STREQ): Likewise.  Clarify that both must be non-NULL for
the assertion to pass.
(ASSERT_STREQ_AT): Likewise.

From-SVN: r259782

PR c++/84701 - unsigned typeof.

* decl.c (grokdeclarator): Overhaul diagnostics for invalid use
of long/short/signed/unsigned.

From-SVN: r259780

PR c++/85305 - pack in lambda init-capture.

* parser.c (cp_parser_initializer): Add subexpression_p parm; don't
check_for_bare_parameter_packs in a subexpression.
(cp_parser_lambda_introducer): Use it.

From-SVN: r259779

argv.c (expandargv): Fix memory leak for expanded arguments.

       * argv.c (expandargv): Fix memory leak for expanded
        arguments.

From-SVN: r259775

Clarify documentation for -fpie and -fPIE

* doc/invoke.texi (-fpie, -fPIE): Fix grammar and clarify
interaction with -pie.

From-SVN: r259774

selftest.h: fix alphabetization of per-source-file selftest declarations

gcc/ChangeLog:
* selftest.h: Fix alphabetization of per-source-file selftest
declarations.

From-SVN: r259773

PR c++/61982 - dead stores to destroyed objects.

gcc/cp/
* call.c (build_trivial_dtor_call): New, assigns a clobber.
(build_over_call, build_special_member_call): Use it.
* cp-tree.h: Declare it.
* init.c (build_delete): Remove trivial path.
gcc/
* gimplify.c (gimplify_modify_expr): Simplify complex lvalue on LHS
of clobber.

From-SVN: r259772

init.c (build_dtor_call): Use build_special_member_call.

* init.c (build_dtor_call): Use build_special_member_call.

(build_delete): Remove redundant uses of save_addr.

From-SVN: r259771

tree.c (build_clobber): New.

* tree.c (build_clobber): New.

* tree.h: Declare it.
* gimplify.c (gimplify_bind_expr, gimplify_target_expr): Use it.

From-SVN: r259770

Use char_span for return type of location_get_source_line

location_get_source_line returns a const char * that isn't 0-terminated,
writing back a length through an int * param.

This is error-prone, as all call-sites have to take into account the
lack of 0-termination, and respect the length of the buffer.

It's cleaner to bundle together this pointer+length state into a class,
so this patch does so, reusing the "char_span" class that I introduced
in r250187 (as part of the fix for PR c/81405).

The patch also adds assertions to all access to the char_span.

gcc/c-family/ChangeLog:
* c-format.c (get_corrected_substring): Update for
location_get_source_line returning a char_span.  Use a char_span
when handling the prefix of the correction.
* c-indentation.c (get_visual_column): Update for
location_get_source_line returning a char_span.
(get_first_nws_vis_column): Likewise.

gcc/ChangeLog:
* diagnostic-show-locus.c (layout::layout): Update for
location_get_source_line returning a char_span.
(struct char_span): Move to input.h.
(struct correction): Update for fields in char_span becoming
private.
(struct source_line): Update for location_get_source_line
returning a char_span.
(layout::print_line): Likewise.
* edit-context.c (edited_file::print_content): Likewise.
(edited_file::print_diff_hunk): Likewise.
(edited_file::print_run_of_changed_lines): Likewise.
(edited_file::get_num_lines): Likewise.
(edited_line::edited_line): Likewise.
* final.c (asm_show_source): Likewise.
* input.c (location_get_source_line): Convert return type
from const char * to char_span, losing the final "line_len"
param.
(dump_location_info): Update for the above.
(get_substring_ranges_for_loc): Likewise.  Use a char_span
when handling the literal within the line.
(test_reading_source_line): Update for location_get_source_line
returning a char_span.
* input.h (class char_span): Move here from
diagnostic-show-locus.c, converting from a struct to a class.
Make data members private.
(char_span::operator bool): New.
(char_span::length): New.
(char_span::get_buffer): New.
(char_span::operator[]): New.
(char_span::subspan): Make const.
(char_span::xstrdup): New.
(location_get_source_line): Convert return type from const char *
to char_span, losing the final "line_size" param.

gcc/testsuite/ChangeLog:
* gcc.dg/plugin/diagnostic_plugin_test_show_locus.c
(test_show_locus): Update for location_get_source_line returning a
char_span.  Use char_span for handling words in the
"test_many_nested_locations" fix-it example.

From-SVN: r259768

lto-wrapper.c (ltrans_priorities): New static var.

* lto-wrapper.c (ltrans_priorities): New static var.
(cmp_priority): New.
(run_gcc): Read priorities and if doing parallel build order
the Makefile by them.

* lto.c (cmp_partitions_size): Remove.
(lto_wpa_write_files): Also output priorities; do not sort partitions.
(cmp_partition_order): Move to ...
* lto-partition.c (cmp_partition_order): ...
(lto_1_to_1_map): Sort partitions.

From-SVN: r259767

input.h: use STATIC_ASSERT

gcc/ChangeLog:
* input.h (builtins_location_check): Convert to a STATIC_ASSERT.

From-SVN: r259766

tree-cfg.c (verify_address): Remove base argument, add flag whether to check TREE_ADDRESSABLE and do that.

2018-04-30  Richard Biener  <rguenther@suse.de>

* tree-cfg.c (verify_address): Remove base argument, add
flag whether to check TREE_ADDRESSABLE and do that.
(verify_expr): Remove.
(verify_types_in_gimple_reference): Add pieces from verify_expr.
(verify_gimple_assign_single): Likewise.
(verify_gimple_switch): Likewise.
(verify_expr_location_1): Dereference tp once.  Add (disabled)
piece from verify_expr.
(verify_gimple_in_cfg): Do not call verify_expr on all ops.

From-SVN: r259765

[ARC] Clear the instruction cache using syscalls.

Clear the instruction cache from `beg' to `end'.  This makes an inline
system call to SYS_cacheflush.

gcc/
2017-03-28  Claudiu Zissulescu  <claziss@synopsys.com>

* config/arc/linux.h (CLEAR_INSN_CACHE): Define.

From-SVN: r259764

[ARC] Cleanup sdata handling.

Clean up how we handle small data load/store operations.

gcc/
2018-01-18  Claudiu Zissulescu  <claziss@synopsys.com>

* config/arc/arc-protos.h (prepare_extend_operands): Remove.
(small_data_pattern): Likewise.
(arc_rewrite_small_data): Likewise.
* config/arc/arc.c (LEGITIMATE_SMALL_DATA_OFFSET_P): Remove.
(LEGITIMATE_SMALL_DATA_ADDRESS_P): Likewise.
(get_symbol_alignment): New function.
(legitimate_small_data_address_p): Likewise.
(legitimate_scaled_address): Update, call
legitimate_small_data_address_p.
(output_sdata): New static variable.
(arc_print_operand): Update how we handle small data operands.
(arc_print_operand_address): Likewise.
(arc_legitimate_address_p): Update, use
legitimate_small_data_address_p.
(arc_rewrite_small_data_p): Remove.
(arc_rewrite_small_data_1): Likewise.
(arc_rewrite_small_data): Likewise.
(small_data_pattern): Likewise.
(compact_sda_memory_operand): Update to use
legitimate_small_data_address_p and get_symbol_alignment.
(prepare_move_operands): Don't rewite sdata pattern.
(prepare_extend_operands): Remove.
* config/arc/arc.md (zero_extendqihi2): Don't rewrite sdata
pattern.
(zero_extendqisi2): Likewise.
(zero_extendhisi2): Likewise.
(extendqihi2): Likewise.
(extendqisi2): Likewise.
(extendhisi2): Likewise.
(addsi3): Likewise.
(subsi3): Likewise.
(andsi3): Likewise.
* config/arc/constraints.md (Usd): Change it to memory constraint.

gcc/testsuite
2018-01-18  Claudiu Zissulescu  <claziss@synopsys.com>

* gcc.target/arc/interrupt-8.c: Update test.
* gcc.target/arc/loop-4.c: Likewise.
* gcc.target/arc/loop-hazard-1.c: Likewise.
* gcc.target/arc/sdata-3.c: Likewise.

From-SVN: r259763

[ARC] Update movhi and movdi patterns.

Allow signed 6-bit short immediates into st[d] instructions.

2017-10-19  Claudiu Zissulescu  <claziss@synopsys.com>

* config/arc/arc.c (arc_split_move): Allow signed 6-bit constants
as source of std instructions.
* config/arc/arc.md (movsi_insn): Update pattern predicate to
allow 6-bit constants as source for store instructions.
(movdi_insn): Update instruction pattern to allow 6-bit constants
as source for store instructions.

testsuite/
2017-10-19  Claudiu Zissulescu  <claziss@synopsys.com>

* gcc.target/arc/store-merge-1.c: New test.
* gcc.target/arc/add_n-combine.c: Update test.

From-SVN: r259762

* doc/invoke.texi (-fdebug-types-section): Fix grammar.

From-SVN: r259761

[patch] allow '-' for stdout dump

https://gcc.gnu.org/ml/gcc-patches/2018-04/msg01303.html
* dumpfile.c (dump_open): Allow '-' for stdout.
* doc/invoke.texi (Developer Options): Document dump filename
determination early.  Document stdin/stdout selection.

Co-Authored-By: Sandra Loosemore <sandra@codesourcery.com>
From-SVN: r259760

* lto-partition.c (lto_balanced_map): Fix sanity check.

From-SVN: r259759

Microblaze Target: PIC data text relative
2018-04-30 Andrew Sadek  <andrew.sadek.se@gmail.com>

gcc/ChangeLog:
* config/microblaze/microblaze.opt: add new option -mpic-data-text-rel.
* config/microblaze/microblaze-protos.h (microblaze_constant_address_p):
Add declaration.
* gcc/config/microblaze/microblaze.h (microblaze_constant_address_p):
CONSTANT_ADDRESS_P definition to microblaze_constant_address_p.
* config/microblaze/microblaze.c (TARGET_PIC_DATA_TEXT_REL):
New addressing mode for data-text relative position indepenedent code.
(microblaze_classify_unspec): add 'UNSPEC_TEXT' case ->
'ADDRESS_SYMBOLIC_TXT_REL'.
(microblaze_classify_address): Add handling for UNSPEC + CONST_INT.
(microblaze_legitimate_pic_operand): Exclude function calls from
pic operands in case of TARGET_PIC_DATA_TEXT_REL option.
(microblaze_legitimize_address): Generate 'UNSPEC_TEXT' for all possible
addresses cases.
(microblaze_address_insns): Add 'ADDRESS_SYMBOLIC_TXT_REL' case.
(print_operand): Add 'ADDRESS_SYMBOLIC_TXT_REL' case.
(print_operand_address): Add 'ADDRESS_SYMBOLIC_TXT_REL' case + handling
for 'address + offset'.
(microblaze_expand_prologue): Add new function prologue call for
'r20' assignation.
(microblaze_asm_generate_pic_addr_dif_vec): Override new target hook
'TARGET_ASM_GENERATE_PIC_ADDR_DIFF_VEC' to disable address diff vector
table in case of TARGET_PIC_DATA_TEXT_REL.
(expand_pic_symbol_ref): Add handling for 'UNSPEC_TEXT'.
* gcc/config/microblaze/microblaze.md (TARGET_PIC_DATA_TEXT_REL):
Add new macros 'UNSPEC_TEXT',
'UNSPEC_SET_TEXT' + add rule for setting r20 in function prologue
+ exclude function calls from 'UNSPEC_PLT' in case of data text
relative mode.
* doc/tm.texi.in (TARGET_ASM_GENERATE_PIC_ADDR_DIFF_VEC): Add
new target hook for generating address diff vector tables in case of
flag_pic.
* doc/tm.texi : Regenerate.
* stmt.c (TARGET_ASM_GENERATE_PIC_ADDR_DIFF_VEC): Append new condition
'targetm.asm_out.generate_pic_addr_diff_vec' to flag_pic in case
of addr diff vector generation.
* target.def (TARGET_ASM_GENERATE_PIC_ADDR_DIFF_VEC): Add
target hook definition.
* targhooks.h, gcc/targhooks.c (TARGET_ASM_GENERATE_PIC_ADDR_DIFF_VEC):
Add default function for generate_pic_addr_diff_vec -> flag_pic.
* doc/invoke.texi (Add new pic option): Add new microblaze pic
option for data text relative.

testsuite/ChangeLog:
* gcc.target/microblaze/others/data_var1.c: Include
PIC case of r20 base register.
* gcc.target/microblaze/others/data_var2.c: Ditto.
* gcc.target/microblaze/others/picdtr.c: Add new
test case for -mpic-is-data-text-relative.
* gcc.target/microblaze/others/sdata_var1.c: Add
* gcc.target/microblaze/others/sdata_var2.c: Ditto.
* gcc.target/microblaze/others/sdata_var3.c: Ditto.
* gcc.target/microblaze/others/sdata_var4.c: Ditto.
* gcc.target/microblaze/others/sdata_var5.c: Ditto.
* gcc.target/microblaze/others/sdata_var6.c: Ditto.
* gcc.target/microblaze/others/string_cst1_gpopt.c: Ditto.
* gcc.target/microblaze/others/string_cst2_gpopt.c: Ditto.

From-SVN: r259758

tree-chrec.h (evolution_function_is_constant_p): Remove redundant check.

2018-04-30  Richard Biener  <rguenther@suse.de>

* tree-chrec.h (evolution_function_is_constant_p): Remove
redundant check.
* tree-cfg.c (tree_node_can_be_shared): Re-order checks.

From-SVN: r259756

re PR bootstrap/85571 (non-bootstrap-debug miscompare with trunk)

2018-04-30  Richard Biener  <rguenther@suse.de>

PR bootstrap/85571
* Makefile.tpl (STAGE3_CFLAGS): Use -fchecking=1.
(STAGE3_TFLAGS): Likewise.
(STAGEtrain_CFLAGS): Filter out -fchecking=1.
(STAGEtrain_TFLAGS): Likewise.
* Makefile.in: Regenerate.

* dwarf2out.c (gen_producer_string): Ignore -fchecking[=].

From-SVN: r259755

re PR tree-optimization/28364 (poor optimization choices when iterating over a std::string (probably not c++-specific))

2018-04-30  Richard Biener  <rguenther@suse.de>

PR tree-optimization/28364
PR tree-optimization/85275
* tree-ssa-loop-ch.c (ch_base::copy_headers): Stop after
copying first exit test.

* gcc.dg/tree-ssa/copy-headers-5.c: New testcase.
* gcc.dg/tree-ssa/predcom-8.c: Likewise.
* gcc.dg/tree-ssa/cunroll-13.c: Rewrite to gimple testcase.
* gcc.dg/tree-ssa/ivopt_mult_1.c: XFAIL.
* gcc.dg/tree-ssa/ivopt_mult_1g.c: Add gimple variant that
still passes.
* gcc.dg/tree-ssa/ivopt_mult_2.c: XFAIL.
* gcc.dg/tree-ssa/ivopt_mult_2g.c: Add gimple variant that
still passes.
* gcc.dg/tree-ssa/ssa-dom-thread-7.c: Adjust.
* gcc.dg/tree-ssa/20030710-1.c: Likewise.
* gcc.dg/tree-ssa/20030711-1.c: Likewise.

From-SVN: r259754

Daily bump.

From-SVN: r259753

lto-partition.c: Include sreal.h

* lto-partition.c: Include sreal.h
(add_symbol_to_partition_1): Use size instead of self_size
for size estimate.
(account_reference_p): New.
(lto_balanced_map): Use 64bit arithmetics for size calculatoins; cleanup;
fix accounting errors in boundary size; add debug output; combine cost
as cost/size instead of cost/internal; reduce the partitioning error to
+- 1/8 of the parttion size.

From-SVN: r259749

[openacc, testsuite] Fix undefined behaviour in atomic_capture-1.c

2018-04-29  Julian Brown  <julian@codesourcery.com>
    Tom de Vries  <tom@codesourcery.com>

PR testsuite/85527
* testsuite/libgomp.oacc-c-c++-common/atomic_capture-1.c: Allow
arbitrary order for iterations of atomic subtract check.

Co-Authored-By: Tom de Vries <tom@codesourcery.com>
From-SVN: r259748

Daily bump.

From-SVN: r259747

DWARF: Add .debug_addr table header for dwarf_version >= 5.

GNU DebugFission didn't add table headers for the .debug_addr
tables, but DWARF5 does. The table header makes it possible
for a DWARF consumer to parse the address tables without having
to index all .debug_info CUs first.

We can keep using the .debug_addr section label as is, because the
DW_AT_[GNU_]addr_base attribute points at the actual address index,
which starts right after the table header. So the label is generated
at the correct location whether the header is added first or not.

Add DW_AT_addr_base instead of DW_AT_GNU_addr_base to the skeleton
CU DIE for DWARF5.

gcc/ChangeLog

* dwarf2out.c (dwarf2out_finish): Add .debug_addr table header for
dwarf_version >= 5.
(dwarf_AT): Handle DW_AT_addr_base.
(add_top_level_skeleton_die_attrs): Use dwarf_AT for DW_AT_addr_base.

From-SVN: r259743

re PR target/84431 (Suboptimal code for masked shifts (x86/x86-64))

PR target/84431
* config/i386/i386.md (*ashl<dwi>3_doubleword_mask): New pattern.
(*ashl<dwi>3_doubleword_mask_1): Ditto.
(*<shift_insn><dwi>3_doubleword_mask): Ditto.
(*<shift_insn><dwi>3_doubleword_mask_1): Ditto.

testsuite/ChangeLog:

PR target/84431
* gcc.target/i386/pr84431.c: New test.

From-SVN: r259739

tree-cfg.c (verify_gimple_phi): Take a gphi * argument.

2018-04-28  Richard Biener  <rguenther@suse.de>

* tree-cfg.c (verify_gimple_phi): Take a gphi * argument.
(verify_gimple_in_cfg): Rename visited_stmts to visited_throwing_stmts
to reflect use.  Only add interesting stmts.

From-SVN: r259738

Daily bump.

From-SVN: r259737

[openacc, testsuite] Fix undefined behaviour in atomic_capture-1.f90

2018-04-28  Tom de Vries  <tom@codesourcery.com>

PR testsuite/85527
* testsuite/libgomp.oacc-fortran/atomic_capture-1.f90 (main): Store
atomic capture results obtained in parallel loop to an array, instead of
to a scalar.

From-SVN: r259733

re PR ipa/85549 (Infinite loop in ilmbase package)

PR ipa/85549
* ipa-cp.c (find_aggregate_values_for_callers_subset): Make sure
the jump function allows for passing through aggregate values.

* g++.dg/ipa/pr85549.C: New test.

From-SVN: r259730

re PR c++/85553 (cannot list-initialize a variable of type std::nullptr_t)

PR c++/85553
* init.c (build_zero_init_1): For zero initialization of
NULLPTR_TYPE_P type use build_int_cst directly.

* g++.dg/cpp0x/Wzero-as-null-pointer-constant-3.C: Add dg-bogus
directive.
* g++.dg/cpp0x/constexpr-85553.C: New test.

From-SVN: r259728

input.h: convert some macros to inline functions

gcc/ChangeLog:
* input.h (in_system_header_at): Convert from macro to inline
function.
(from_macro_expansion_at): Likewise.
(from_macro_definition_at): Likewise.

From-SVN: r259727

* config.gcc: Mark tile* targets as deprecated/obsolete.

From-SVN: r259724

re PR libgcc/84292 (__sync_add_and_fetch returns the old value instead of the new value)

2018-04-27  Andreas Tobler  <andreast@gcc.gnu.org>
    Maryse Levavasseur <maryse.levavasseur@stormshield.eu>

PR libgcc/84292
* config/arm/freebsd-atomic.c (SYNC_OP_AND_FETCH_N): Fix the
op_and_fetch to return the right result.

Co-Authored-By: Maryse Levavasseur <maryse.levavasseur@stormshield.eu>
From-SVN: r259722

Don't offer suggestions for compiler-generated variables (PR c++/85515)

gcc/cp/ChangeLog:
PR c++/85515
* name-lookup.c (consider_binding_level): Skip compiler-generated
variables.
* search.c (lookup_field_fuzzy_info::fuzzy_lookup_field): Flatten
nested if statements into a series of rejection tests.  Reject
lambda-ignored entities as suggestions.

gcc/testsuite/ChangeLog:
PR c++/85515
* g++.dg/pr85515-1.C: New test.
* g++.dg/pr85515-2.C: New test.

From-SVN: r259720