runtime: drop unused C type reflection code

    In particular, drop __go_type_descriptors_equal, which is no longer
    used, and will be made obsolete by CL 179598.

    Reviewed-on: https://go-review.googlesource.com/c/gofrontend/+/179858

From-SVN: r271823

compiler: optimize append of make

    The gc compiler recognizes append(s, make([]T, n)...), and
    generates code to directly zero the tail instead of allocating a
    new slice and copying. This CL lets the Go frontend do basically
    the same.

    The difficulty is that at the point we handle append, there may
    already be temporaries introduced (e.g. in order_evaluations),
    which makes it hard to find the append-of-make pattern. The
    compiler could "see through" the value of a temporary, but it is
    only safe to do if the temporary is not assigned multiple times.
    For this, we add tracking of assignments and uses for temporaries.

    This also helps in optimizing non-escape slice make. We already
    optimize non-escape slice make with constant len/cap to stack
    allocation. But it failed to handle things like f(make([]T, n))
    (where the slice doesn't escape and n is constant), because of
    the temporary. With tracking of temporary assignments and uses,
    it can handle this now as well.

    Reviewed-on: https://go-review.googlesource.com/c/gofrontend/+/179597

From-SVN: r271822

compiler: handle int-to-string conversion with large integer constant

    Currently, Type_conversion_expression::do_is_constant thinks the
    int-to-string conversion is constant if the integer operand is
    constant, but Type_conversion_expression::do_get_backend actually
    generates a call to runtime.intstring if the integer does not fit
    in a "ushort", which makes it not suitable in constant context,
    such as static initializer.

    This CL makes it handle all constant integer input as constant,
    generating constant string.

    Fixes golang/go#32347.

    Reviewed-on: https://go-review.googlesource.com/c/gofrontend/+/179777

From-SVN: r271821

re PR c/43673 (Incorrect warning: use of 'D' length modifier with 'a' type character)

PR c/43673
* c-format.c (print_char_table, scanf_char_table): Replace BADLEN with
TEX_D32, TEX_D64 or TEX_D128.

PR c/43673
* gcc.dg/format-dfp-printf-1.c: New test.
* gcc.dg/format-dfp-scanf-1.c: Likewise.

From-SVN: r271820

cp-demangle.c: Don't define CP_DYNAMIC_ARRAYS if __STDC_NO_VLA__ is non-zero.

* cp-demangle.c: Don't define CP_DYNAMIC_ARRAYS if __STDC_NO_VLA__
is non-zero.

From-SVN: r271819

runtime: implement cheaper context switch on Linux/AMD64

    Currently, goroutine switches are implemented with libc
    getcontext/setcontext functions, which saves/restores the machine
    register states and also the signal context. This does more than
    what we need, and performs an expensive syscall.

    This CL implements a simplified version of getcontext/setcontext,
    in assembly, that only saves/restores the necessary part, i.e.
    the callee-save registers, and the PC, SP. A simplified version
    of makecontext, written in C, is also added. Currently this is
    only implemented on Linux/AMD64.

    Reviewed-on: https://go-review.googlesource.com/c/gofrontend/+/178298

From-SVN: r271818

apply unary op to both sides of (vec_cond x cst1 cst2)

2019-05-31  Marc Glisse  <marc.glisse@inria.fr>

gcc/
* match.pd (~(vec?cst1:cst2)): New transformation.

gcc/testsuite/
* g++.dg/tree-ssa/cprop-vcond.C: New file.

From-SVN: r271817

Simplify more EXACT_DIV_EXPR comparisons

2019-05-31  Marc Glisse  <marc.glisse@inria.fr>

gcc/
* match.pd (X/[ex]D<Y/[ex]D): Handle negative denominator.
((size_t)(A /[ex] B) CMP C): New transformation.

gcc/testsuite/
* gcc.dg/tree-ssa/cmpexactdiv-3.c: New file.
* gcc.dg/tree-ssa/cmpexactdiv-4.c: New file.
* gcc.dg/Walloca-13.c: Xfail.

From-SVN: r271816

New .md construct: define_insn_and_rewrite

Several SVE patterns need define_insn_and_splits that generate the
same insn_code, but with different operands.  That's probably a
niche requirement, but it's cropping up often enough on the ACLE
branch that I think it would be good to have a syntactic sugar for it.

This patch therefore adds a new construct called define_insn_and_rewrite.
It's basically a define_insn_and_split with an implicit split pattern,
obtained by copying the insn pattern and replacing match_operands with
match_dups and match_operators with match_op_dups.

2019-05-31  Richard Sandiford  <richard.sandiford@arm.com>

gcc/
* doc/md.texi: Document define_insn_and_rewrite.
* rtl.def (DEFINE_INSN_AND_REWRITE): New rtx code.
* gensupport.c (queue_elem): Update comment.
(replace_operands_with_dups): New function.
(gen_rewrite_sequence): Likewise.
(process_rtx): Handle DEFINE_INSN_AND_REWRITE.
* read-rtl.c (apply_subst_iterator): Likewise.
(add_condition_to_rtx, named_rtx_p): Likewise.
(rtx_reader::read_rtx_operand): Likewise.
* config/aarch64/aarch64-sve.md
(while_ult<GPI:mode><PRED_ALL:mode>_cc): Rename to...
(*while_ult<GPI:mode><PRED_ALL:mode>_cc): ...this and use
define_insn_and_rewrite.
(*cond_<optab><mode>_any): Turn into define_insn_and_rewrites.
Remove separate define_split.

From-SVN: r271815

Add noexcept to tuple<> and simplify tuple<T1,T2> noexcept-specifiers

* include/std/tuple (tuple<>): Add noexcept to allocator-extended
constructors.
(tuple<T1, T2>::__nothrow_default_constructible()): New helper
function.
(tuple<T1, T2>::tuple(), explicit tuple<T1, T2>::tuple()): Use helper.

From-SVN: r271814

tree-ssa-alias.c (type_has_components_p): New function.

* tree-ssa-alias.c (type_has_components_p): New function.
(aliasing_component_refs_p): Use it.

From-SVN: r271813

Fix breakage due to removing __gnu_cxx::size_t declaration

Restore the using-declaration but locally in the source file, not in the
header.

* src/c++98/bitmap_allocator.cc: Add using-declaration for size_t.

From-SVN: r271812

[C++PATCH] Lambda names are anonymous

https://gcc.gnu.org/ml/gcc-patches/2019-05/msg02126.html
* cp-tree.h (IDENTIFIER_LAMBDA_P): New.
(TYPE_ANON_P): New.
(LAMBDA_TYPE_P, TYPE_UNNAMED_P):  Likewise.
(LAMBDANAME_PREFIX, LAMBDANAME_FORMAT): Delete.
(make_lambda_name): Don't declare.
* error.c (dump_aggr_type): Check for lambdas before other
anonymous names.
* lambda.c (begin_lambda_type): Use make_anon_name.
* cp-lang.c (cxx_dwarf_name): Lambda names smell anonymous.
* mangle.c (write_local_name): Likewise.
* name-lookup.c (lambda_cnt, make_lambda_name): Delete.

From-SVN: r271811

cpu-future.c: Require powerpc_future_ok.

2019-05-31  Bill Schmidt  <wschmidt@linux.ibm.com>
    Michael Meissner  <meissner@linux.ibm.com>

* gcc.target/powerpc/cpu-future.c: Require powerpc_future_ok.
* gcc.target/powerpc/localentry-1.c: Likewise.
* gcc.target/powerpc/localentry-direct-1.c: Likewise.
* gcc.target/powerpc/notoc-direct-1.c: Likewise.
* gcc.target/powerpc/pcrel-sibcall-1.c: Likewise.
* lib/target-supports.exp (check_powerpc_future_hw_available): New.
(check_effective_target_powerpc_future_ok): New.

Co-Authored-By: Michael Meissner <meissner@linux.ibm.com>
From-SVN: r271810

PR libstdc++/90682 allow set_terminate(0) and set_unexpected(0)

Make these functions restore the default handlers when passed a null
pointer. This is consistent with std::pmr::set_default_resource(0), and
also matches the current behaviour of libc++.

In order to avoid duplicating the preprocessor condition from
eh_term_handler.cc more that into a new eh_term_handler.h header and
define a macro that can be used in both eh_term_handler.cc and
eh_terminate.cc.

PR libstdc++/90682
* libsupc++/eh_term_handler.cc: Include eh_term_handler.h to get
definition of _GLIBCXX_DEFAULT_TERM_HANDLER.
* libsupc++/eh_term_handler.h: New header defining
_GLIBCXX_DEFAULT_TERM_HANDLER.
* libsupc++/eh_terminate.cc: Include eh_term_handler.h.
(set_terminate): Restore default handler when argument is null.
(set_unexpected): Likewise.
* testsuite/18_support/set_terminate.cc: New test.
* testsuite/18_support/set_unexpected.cc: New test.

From-SVN: r271808

Remove using-declarations that add std names to __gnu_cxx

These using-declarations appear to have been added for simplicity when
moving the non-standard extensions from namespace std to namespace
__gnu_cxx. Dumping all these names into namespace __gnu_cxx allows
unportable uses like __gnu_cxx::size_t and __gnu_cxx::pair, which serve
no useful purpose.

This patch removes most of the using-declarations from namespace scope,
then either qualifies names as needed or adds using-declarations at
block scope or typedefs at class scope.

* include/backward/hashtable.h (size_t, ptrdiff_t)
(forward_iterator_tag, input_iterator_tag, _Construct, _Destroy)
(distance, vector, pair, __iterator_category): Remove
using-declarations that add these names to namespace __gnu_cxx.
* include/ext/bitmap_allocator.h (size_t, ptrdiff_t): Likewise.
* include/ext/debug_allocator.h (size_t): Likewise.
* include/ext/functional (size_t, unary_function, binary_function)
(mem_fun1_t, const_mem_fun1_t, mem_fun1_ref_t, const_mem_fun1_ref_t):
Likewise.
* include/ext/malloc_allocator.h (size_t, ptrdiff_t): Likewise.
* include/ext/memory (ptrdiff_t, pair, __iterator_category): Likewise.
* include/ext/mt_allocator.h (size_t, ptrdiff_t): Likewise.
* include/ext/new_allocator.h (size_t, ptrdiff_t): Likewise.
* include/ext/numeric (iota): Fix outdated comment.
* include/ext/pool_allocator.h (size_t, ptrdiff_t): Likewise.
* include/ext/rb_tree (_Rb_tree, allocator): Likewise.
* include/ext/rope (size_t, ptrdiff_t, allocator, _Destroy): Likewise.
* include/ext/ropeimpl.h (size_t, printf, basic_ostream)
(__throw_length_error, _Destroy, std::__uninitialized_fill_n_a):
Likewise.
* include/ext/slist (size_t, ptrdiff_t, _Construct, _Destroy)
(allocator, __true_type, __false_type): Likewise.

From-SVN: r271807

PR libstdc++/71579 assert that type traits are not misused with incomplete types

This patch adds static asserts for type traits misuse with incomplete
classes and unions. This gives a nice readable error message instead
of an UB and odr-violations.

Some features of the patch:
* each type trait has it's own static_assert inside. This gives better
diagnostics than the approach with putting the assert into a helper
structure and using it in each trait.
* the result of completeness check is not memorized by the compiler.
This gives no false positive after the first failed check.
* some of the compiler builtins already implement the check. But not
all of them! So the asserts are in all the type_traits that may
benefit from the check. This also makes the behavior of libstdc++ more
consistent across different (non GCC) compilers.
* std::is_base_of does not have the assert as it works well in many
cases with incomplete types

2019-05-31  Antony Polukhin  <antoshkka@gmail.com>

PR libstdc++/71579
* include/std/type_traits __type_identity, __is_complete_or_unbounded):
New helpers for checking preconditions in traits.
(is_trivial, is_trivially_copyable, is_standard_layout, is_pod)
(is_literal_type, is_empty, is_polymorphic, is_final, is_abstract)
(is_destructible, is_nothrow_destructible, is_constructible)
(is_default_constructible, is_copy_constructible)
(is_move_constructible, is_nothrow_default_constructible)
(is_nothrow_constructible, is_nothrow_copy_constructible)
(is_nothrow_move_constructible, is_copy_assignable, is_move_assignable)
(is_nothrow_assignable, is_nothrow_copy_assignable)
(is_nothrow_move_assignable, is_trivially_constructible)
(is_trivially_copy_constructible, is_trivially_move_constructible)
is_trivially_assignable, is_trivially_copy_assignable)
(is_trivially_move_assignable, is_trivially_destructible)
(alignment_of, is_swappable, is_nothrow_swappable, is_invocable)
(is_invocable_r, is_nothrow_invocable)
(has_unique_object_representations, is_aggregate): Add static_asserts
to make sure that type traits are not misused with incomplete types.
(__is_constructible_impl, __is_nothrow_default_constructible_impl)
(__is_nothrow_constructible_impl, __is_nothrow_assignable_impl): New
base characteristics without assertions that can be reused in other
traits.
* testsuite/20_util/is_complete_or_unbounded/memoization.cc: New test.
* testsuite/20_util/is_complete_or_unbounded/memoization_neg.cc: New
test.
* testsuite/20_util/is_complete_or_unbounded/value.cc: New test.
* testsuite/20_util/is_abstract/incomplete_neg.cc: New test.
* testsuite/20_util/is_aggregate/incomplete_neg.cc: New test.
* testsuite/20_util/is_class/value.cc: Check incomplete type.
* testsuite/20_util/is_function/value.cc: Likewise.
* testsuite/20_util/is_move_constructible/incomplete_neg.cc: New test.
* testsuite/20_util/is_nothrow_move_assignable/incomplete_neg.cc: New
test.
* testsuite/20_util/is_polymorphic/incomplete_neg.cc: New test.
* testsuite/20_util/is_reference/value.cc: Check incomplete types.
* testsuite/20_util/is_unbounded_array/value.cc: Likewise.
* testsuite/20_util/is_union/value.cc: Likewise.
* testsuite/20_util/is_void/value.cc: Likewise.
* testsuite/util/testsuite_tr1.h: Add incomplete union type.

From-SVN: r271806

Fix random_device to work with COW strings again

Instead of duplicating the initialization functions that take string,
add a new member taking a raw pointer that can be used to convert the
constructor token from the old string to the new.

Also fix "mt19337" typos in a testcase.

* include/bits/random.h (random_device::_M_init(const char*, size_t)):
Add new private member function.
* src/c++11/cow-string-inst.cc (random_device::_M_init(const string&))
(random_device::_M_init_pretr1(const string&)): Call new private
member with string data.
* src/c++11/random.cc (random_device::_M_init(const char*, size_t)):
Define.
* testsuite/26_numerics/random/random_device/cons/default-cow.cc: New
test using COW strings.
* testsuite/26_numerics/random/random_device/cons/default.cc: Generate
a value from the device.
* testsuite/26_numerics/random/random_device/cons/token.cc: Likewise.
Fix typo in token string.

From-SVN: r271805

Add pretty print for const_tree.

2019-05-31  Martin Liska  <mliska@suse.cz>

* gdbhooks.py: Add const_tree to TreePrinter.

From-SVN: r271804

re PR debug/86964 (Too many debug symbols included, especially for extern globals)

2019-05-31  Thomas De Schampheleire  <thomas.de_schampheleire@nokia.com>

PR debug/86964
* common.opt (feliminate-unused-debug-symbols): Enable by default.
* doc/invoke.texi (Debugging Options): Document new default of
-feliminate-unused-debug-symbols and remove restriction to 'stabs'.

* g++.dg/debug/dwarf2/fesd-any.C: Use
-fno-eliminate-unused-debug-symbols.
* g++.dg/debug/dwarf2/fesd-baseonly.C: Likewise.
* g++.dg/debug/dwarf2/fesd-none.C: Likewise.
* g++.dg/debug/dwarf2/fesd-reduced.C: Likewise.
* g++.dg/debug/dwarf2/fesd-sys.C: Likewise.
* g++.dg/debug/dwarf2/inline-var-1.C: Likewise.
* g++.dg/debug/enum-2.C: Likewise.
* gcc.dg/debug/dwarf2/fesd-any.c: Likewise.
* gcc.dg/debug/dwarf2/fesd-baseonly.c: Likewise.
* gcc.dg/debug/dwarf2/fesd-none.c: Likewise.
* gcc.dg/debug/dwarf2/fesd-reduced.c: Likewise.
* gcc.dg/debug/dwarf2/fesd-sys.c: Likewise.

From-SVN: r271803

re PR tree-optimization/90671 (ICE on valid code at -Os and above with -g enabled in gsi_split_seq_after, at gimple-iterator.c:345)

PR tree-optimization/90671
* tree-ssa-threadupdate.c (ssa_create_duplicates): If
template_block used to be empty on the first call, don't use
gsi_split_seq_after and gsi_insert_seq_after, but remember whole
seq with bb_seq and set it with set_bb_seq.

* gcc.dg/torture/pr90671.c: New test.

From-SVN: r271802

c++, testsuite - require alias support for a test.

The test for pr84497 uses a facility that requires alias support from
the target, and therefore fails on targets without.  Add a suitable
dg-require statement.

2019-05-31  Iain Sandoe  <iain@sandoe.co.uk>

* g++.dg/cpp0x/pr84497.C: Require alias support.

From-SVN: r271801

Darwin, x86, testsuite - adjust tests for Darwin's align syntax.

Darwin has a .align taking a power of 2 by default, so that some
tests expecting a byte count are failing, fixed thus.

gcc/testsuite/

2019-05-31  Iain Sandoe  <iain@sandoe.co.uk>

* gcc.target/i386/falign-functions-3.c: Adjust align syntax
and label for Darwin.
* gcc.target/i386/attr-aligned-2.c: Adjust align syntax for
Darwin.

From-SVN: r271800

Darwin, x86 - We have .p2align, so declare its use.

.p2align support is present in all x86 assemblers on released
Darwin systems.

gcc/

2019-05-29  Iain Sandoe  <iain@sandoe.co.uk>

* config/i386/darwin.h (ASM_OUTPUT_MAX_SKIP_ALIGN): New.

From-SVN: r271799

predicates.md (pcrel_address): New define_predicate.

2019-05-30  Bill Schmidt  <wschmidt@linux.ibm.com>
    Michael Meissner  <meissner@linux.ibm.com>

* config/rs6000/predicates.md (pcrel_address): New define_predicate.
(prefixed_mem_operand): Likewise.
(non_prefixed_mem_operand): Likewise.
* config/rs6000/rs6000-protos.h (rs6000_prefixed_address): New
prototype.
* config/rs6000/rs6000.c (print_operand_address): Handle
PC-relative addresses.
(mode_supports_prefixed_address_p): New function.
(rs6000_prefixed_address): New function.
* config/rs6000/rs6000.h (SYMBOL_FLAG_PCREL): New #define.
(SYMBOL_REF_PCREL_P): Likewise.

Co-Authored-By: Michael Meissner <meissner@linux.ibm.com>
From-SVN: r271798

* fi.po, sv.po: Update.

From-SVN: r271796

Daily bump.

From-SVN: r271795

gimplify.c (enum gimplify_omp_var_data): Add GOVD_CONDTEMP.

* gimplify.c (enum gimplify_omp_var_data): Add GOVD_CONDTEMP.
(gimplify_adjust_omp_clauses_1): Handle GOVD_CONDTEMP.
(gimplify_omp_for): If worksharing loop with lastprivate conditional
is nested inside of parallel region, add _condtemp_ clause to both.
* tree-nested.c (convert_nonlocal_omp_clauses,
convert_local_omp_clauses): Ignore OMP_CLAUSE__CONDTEMP_ instead of
assertion failure.
* omp-general.h (struct omp_for_data): Add have_pointer_condtemp
member.
* omp-general.c (omp_extract_for_data): Compute it.
* omp-low.c (scan_sharing_clauses): Handle OMP_CLAUSE__CONDTEMP_.
(lower_rec_input_clauses): Likewise.
(lower_lastprivate_conditional_clauses): If OMP_CLAUSE__CONDTEMP_
clause is already present, just add one further one after it.
(lower_lastprivate_clauses): Handle cond_ptr with array type.
(lower_send_shared_vars): Clear _condtemp_ vars.
(lower_omp_1) <case GIMPLE_ASSIGN>: Handle target data like critical
or section or taskgroup.
* omp-expand.c (determine_parallel_type): Disallow combining only if
first OMP_CLAUSE__CONDTEMP_ has pointer type.  Disallow combining
of parallel sections if OMP_CLAUSE__CONDTEMP_ is present.
(expand_omp_for_generic, expand_omp_for_static_nochunk,
expand_omp_for_static_chunk, expand_omp_for): Use
fd->have_pointer_condtemp instead of fd->lastprivate_conditional to
determine if a special set of API routines are needed and if condtemp
needs to be initialized, while always initialize cond_var if
fd->lastprivate_conditional is non-zero.

From-SVN: r271791

Fix RISC-V build failure for go language.

gcc/go/
* go-gcc.cc (Gcc_backend::Gcc_backend): Add BUILT_IN_ATOMIC_FETCH_AND_1
and BUILT_IN_ATOMIC_FETCH_OR_1.

From-SVN: r271790

LWG2788 basic_string spurious use of a default constructible allocator

This only change the cxx11 basic_string, because COW strings don't
correctly propagate allocators anyway.

2019-05-30  Nina Dinka Ranns  <dinka.ranns@gmail.com>

LWG2788 basic_string spurious use of a default constructible allocator
* include/bits/basic_string.tcc [_GLIBCXX_USE_CXX11_ABI]
(basic_string::_M_replace_dispatch): Construct temporary string with
the current allocator.
* testsuite/21_strings/basic_string/allocator/char/lwg2788.cc: New.
* testsuite/21_strings/basic_string/allocator/wchar_t/lwg2788.cc: New.

From-SVN: r271789

* cp-tree.h (TYPE_HAS_NONTRIVIAL_DESTRUCTOR): Fix a typo.

From-SVN: r271788

constraints.md (eI): New constraint.

2019-05-30  Bill Schmidt  <wschmidt@linux.ibm.com>
    Michael Meissner  <meissner@linux.ibm.com>

* config/rs6000/constraints.md (eI): New constraint.
* config/rs6000/predicates.md (cint34_operand): New predicate.
* config/rs6000/rs6000.h (SIGNED_16BIT_OFFSET_P): New #define.
(SIGNED_34BIT_OFFSET_P): Likewise.
* doc/md.texi (eI): Document constraint.

Co-Authored-By: Michael Meissner <meissner@linux.ibm.com>
From-SVN: r271787

gfc-internals.texi (Translating to GENERIC): New chapter.

2019-05-30  Thomas Koenig  <tkoenig@gcc.gnu.org>

    * gfc-internals.texi (Translating to GENERIC): New chapter.

From-SVN: r271786

[aarch64]: add support for fabd in sve

This patch adds support in SVE to combine:
- fsub and fabs into fabd

fsub    z0.s, z0.s, z1.s
fabs    z0.s, p1/m, z0.s
---
fabd    z0.s, p1/m, z0.s, z1.s

2019-05-30  Sylvia Taylor  <sylvia.taylor@arm.com>

gcc/
* config/aarch64/aarch64-sve.md (*fabd<mode>3): New.

gcc/testsuite/
* gcc.target/aarch64/sve/fabd_1.c: New.

From-SVN: r271785

compiler: intrinsify sync/atomic functions

    Let the Go frontend recognize sync/atomic functions and turn them
    into intrinsics.

    Also make sure not to intrinsify calls in go or defer statements.

    Reviewed-on: https://go-review.googlesource.com/c/gofrontend/+/178937

From-SVN: r271784

re PR c++/90598 (Return type of explicit destructor call wrong)

PR c++/90598
* tree.c (lvalue_kind): Return clk_none for expressions with
with VOID_TYPE_P.

* g++.dg/cpp0x/pr90598.C: New test.

From-SVN: r271783

Update libstdc++ documentation for Support and Diagnostics clauses

* doc/xml/manual/diagnostics.xml: Update list of headers that define
exception classes.
* doc/xml/manual/support.xml: Rewrite advice around NULL. Rewrite
section about new/delete overloads. Improve section on verbose
terminate handler.
* doc/html/*: Regenerate.

From-SVN: r271782

rs6000-cpus.def (OTHER_FUSION_MASKS): New #define.

2019-05-30  Bill Schmidt  <wschmidt@linux.ibm.com>
    Michael Meissner  <meissner@linux.ibm.com>

* rs6000-cpus.def (OTHER_FUSION_MASKS): New #define.
(ISA_3_0_MASKS_SERVER): Mask off OTHER_FUSION_MASKS.
(ISA_3_0_MASKS_IEEE): Remove OPTION_MASK_DIRECT_MOVE.
(ISA_FUTURE_MASKS_SERVER): Add OPTION_MASK_PREFIXED_ADDR.
(OTHER_FUTURE_MASKS): Likewise.
(POWERPC_MASKS): Likewise.
* rs6000.c (rs6000_option_override_internal): Error if -mpcrel is
specified without -mprefixed-addr or -mcpu=future.  Error if
-mprefixed-addr is specified without -mcpu=future.
(rs6000_opt_masks): Add entry for prefixed-addr.
* rs6000.opt (mprefixed-addr): New option.

Co-Authored-By: Michael Meissner <meissner@linux.ibm.com>
From-SVN: r271781

[PATCH][GCC][AARCH64] Fix libstdc++ build failure after r271735

gcc/ChangeLog
* aarch64/aarch64.c (aarch64_post_cfi_startproc): Add
cfun->is_thunk check.

From-SVN: r271780

* lang.opt (ftail-call-workaround): Fix a typo.

From-SVN: r271777

Update C++20 status table

The status of P1353R0 was "Partial" because we don't define the
__cpp_lib_three_way_comparison macro, but that's because we don't
support the feature. So the paper can be marked as done.

* doc/xml/manual/status_cxx2020.xml: Add feature-test macro for
P0811R3. Change status of P1353R0.
* doc/html/*: Regenerate.

From-SVN: r271774

Update documentation of implementation-defined library features

* doc/xml/manual/status_cxx2011.xml: Use <variablelist> for
documentation of implementation-defined types for [thread.req.native].
* doc/xml/manual/status_cxx2017.xml: Update documentation of
implementation-defined strings for [variant.bad.access]. Fix typo in
documentation of implementation-defined support for [fs.conform.9945].
* doc/html/*: Regenerate.

From-SVN: r271773

tree-predcom.c (is_inv_store_elimination_chain): Fix a typo - lenght to length.

* tree-predcom.c (is_inv_store_elimination_chain): Fix a typo - lenght
to length.

* lang.opt (ftail-call-workaround=): Fix a typo - lenghts to lengths.

From-SVN: r271770

Generalize getconf _NPROCESSORS_ONLN

libgomp:
* configure.ac: Call AX_COUNT_CPUS.
Substitute CPU_COUNT.
* testsuite/Makefile.am (check-am): Use CPU_COUNT as processor
count fallback.
* aclocal.m4: Regenerate.
* configure: Regenerate.
* Makefile.in, testsuite/Makefile.in: Regenerate.

config:
* ax_count_cpus.m4: New file.

From-SVN: r271769

testsuite,x86 - require native TLS for two tests that use it.

gcc/testsuite/

2019-05-30  Iain Sandoe  <iain@sandoe.co.uk>

* gcc.target/i386/pr86257.c: Require native TLS support.
* gcc.target/i386/stack-prot-sym.c: Likewise.

From-SVN: r271768

gdbinit: add a new command and fix one

2019-05-30  Martin Liska  <mliska@suse.cz>

* gdbinit.in: Fix 'ptc' command.  Add trt
that prints TREE_TYPE($).

From-SVN: r271763

decl.c (grokdeclarator): Use declarator->id_loc in five error_at calls.

/cp
2019-05-31  Paolo Carlini  <paolo.carlini@oracle.com>

* decl.c (grokdeclarator): Use declarator->id_loc in five
error_at calls.

/testsuite
2019-05-31  Paolo Carlini  <paolo.carlini@oracle.com>

* g++.dg/cpp0x/alias-decl-18.C: Test location too.
* g++.dg/cpp0x/udlit-nofunc-neg.C: Likewise.
* g++.dg/parse/crash59.C: Likewise.
* g++.dg/parse/error38.C: Likewise.
* g++.dg/parse/error39.C: Likewise.
* g++.dg/template/crash31.C: Likewise.
* g++.dg/template/operator8.C: Likewise.
* g++.dg/template/operator9.C: Likewise.

From-SVN: r271762

re PR go/90669 (go/gofrontend/types.cc:2805 contains range-based ‘for’ loops which are not C++98)

PR go/90669
    compiler: remove range-based 'for' loop

    Fix for GCC PR/90669: remove range-based 'for' loop to preserve
    buildability with g++ version 4.X.

    Reviewed-on: https://go-review.googlesource.com/c/gofrontend/+/179397

From-SVN: r271761

Daily bump.

From-SVN: r271760

PR libstdc++/85494 fix failing test

This test now fails on mingw-w64 because it's no longer always true that
the mt19937 engine is used when _GLIBCXX_USE_DEV_RANDOM is not defined.

Add tests for all the known tokens to ensure that at least one is
accepted.

* testsuite/26_numerics/random/random_device/cons/token.cc: Fix test
that fails on mingw-w64.

From-SVN: r271756

PR libstdc++/88881 fix filesystem::symlink_status for Windows

The fix for PR 88881 only added a workaround to filesystem::status, but
filesystem::symlink_status is also affected by the _wstat bug and needs
the same workaround.

The recent change to optimize path::parent_path() means that the
workaround can be simplified to just use parent_path().

PR libstdc++/88881
* src/c++17/fs_ops.cc [_GLIBCXX_FILESYSTEM_IS_WINDOWS]
(status(const path&, error_code&)): Use parent_path() to remove
trailing slash.
(symlink_status(const path&, error_code&)): Duplicate workaround for
bug in _wstat for paths with trailing slash.
* testsuite/27_io/filesystem/operations/remove_all.cc: Check path
with trailing slash.
* testsuite/27_io/filesystem/operations/status.cc: Likewise.
* testsuite/27_io/filesystem/operations/symlink_status.cc: Likewise.

From-SVN: r271755

Optimize filesystem::path::parent_path()

Parsing a complete string is more efficient than appending each
component one-by-one.

* src/c++17/fs_path.cc (path::parent_path()): Create whole path at
once instead of building it iteratively.

From-SVN: r271754

rs6000.c (rs6000_call_template_1): Handle pcrel calls here...

[gcc]

2019-05-29  Bill Schmidt  <wschmidt@linux.ibm.com>
    Alan Modra  <amodra@gmail.com>

* config/rs6000/rs6000.c (rs6000_call_template_1): Handle pcrel
calls here...
(rs6000_indirect_call_template_1): ...and here.
(rs6000_pltseq_template): Handle plt_pcrel34.  Rework tocsave,
plt16_ha, plt16_lo, mtctr indirect calls.  Use
rs6000_pltseq_enum.
(rs6000_decl_ok_for_sibcall): New function.
(rs6000_function_ok_for_sibcall): Refactor.
(rs6000_longcall_ref): Use UNSPEC_PLT_PCREL when pcrel.
(rs6000_call_aix): Don't emit toc restore rtl for indirect calls
when pcrel.  Reorganize.
(rs6000_sibcall_aix): Don't add r2 to function usage when pcrel.
* rs6000.h (rs6000_pltseq_enum): New enum.
* rs6000.md (UNSPEC_PLT_PCREL): New unspec.
(*pltseq_tocsave): Use rs6000_pltseq_enum.
(*pltseq_plt16_ha): Likewise.
(*pltseq_plt16_lo): Likewise.
(*pltseq_mtctr): Likewise.
(*pltseq_plt_pcrel): New insn.
(*call_local_aix): Handle @notoc calls.
(*call_value_local_aix): Likewise.
(*call_nonlocal_aix): Adjust lengths for pcrel calls.
(*call_value_nonlocal_aix): Likewise.
(*call_indirect_pcrel): New insn.
(*call_value_indirect_pcrel): Likewise.

[gcc/testsuite]

2019-05-29  Bill Schmidt  <wschmidt@linux.ibm.com>

* gcc.target/powerpc/notoc-direct-1.c: New.
* gcc.target/powerpc/pcrel-sibcall-1.c: New.

Co-Authored-By: Alan Modra <amodra@gmail.com>
From-SVN: r271753

re PR c++/90598 (Return type of explicit destructor call wrong)

PR c++/90598
* tree.c (lvalue_kind): Return clk_none for expressions with
with VOID_TYPE_P.

* g++.dg/cpp0x/pr90598.C: New test.

From-SVN: r271752

re PR fortran/90539 (481.wrf slowdown by 25% on Intel Kaby with -Ofast -march=native starting with r271377)

2019-05-29  Thomas Koenig  <tkoenig@gcc.gnu.org>

PR fortran/90539
* gfortran.h (gfc_has_dimen_vector_ref): Add prototype.
* trans.h (gfc_conv_subref_array_arg): Add argument check_contiguous.
(gfc_conv_is_contiguous_expr): Add prototype.
* frontend-passes.c (has_dimen_vector_ref): Remove prototype,
rename to
(gfc_has_dimen_vector_ref): New function name.
(matmul_temp_args): Use gfc_has_dimen_vector_ref.
(inline_matmul_assign): Likewise.
* trans-array.c (gfc_conv_array_parameter): Also check for absence
of a vector subscript before calling gfc_conv_subref_array_arg.
Pass additional argument to gfc_conv_subref_array_arg.
* trans-expr.c (gfc_conv_subref_array_arg): Add argument
check_contiguous. If that is true, check if the argument
is contiguous and do not repack in that case.
* trans-intrinsic.c (gfc_conv_intrinsic_is_contiguous): Split
away most of the work into, and call
(gfc_conv_intrinsic_is_coniguous_expr): New function.

2019-05-29  Thomas Koenig  <tkoenig@gcc.gnu.org>

PR fortran/90539
* gfortran.dg/internal_pack_21.f90: Adjust scan patterns.
* gfortran.dg/internal_pack_22.f90: New test.
* gfortran.dg/internal_pack_23.f90: New test.

From-SVN: r271751

* tree-ssa/alias-access-spath-1.c: new testcase.

From-SVN: r271750

sse.md (*save_multiple<mode>): Rename from save_multiple<mode>.

* config/i386/sse.md (*save_multiple<mode>): Rename from
save_multiple<mode>.
(*restore_multiple<mode>): Rename from restore_multiple<mode>.
(*restore_multiple_and_return<mode>): Rename from
restore_multiple_and_return<mode>.
(*restore_multiple_leave_return<mode>): Rename from
restore_multiple_leave_return<mode>.

From-SVN: r271749

config.gcc (rx-*-linux*): New target.

* config.gcc (rx-*-linux*): New target.
* config/rx/elf.opt: New file.
* config/rx/linux.h: Likewise.
* config/rx/t-linux: Likewise.
* config/rx/rx.c (TARGET_SAVE_ACC_REGISTER): If not defined,
make it zero.
* config/rx/rx.h (ASM_APP_ON): Allow to be overridden.
(ASM_APP_OFF): Likewise.
* config/rx/rx.opt: Drop -msim and -mas100-syntax, they were
moved elsewhere.

* config.host (rx-*-linux*): Add new case.
* config/rx/t-rx (HOST_LIBGCC2_CFLAGS): Force DFmode to SFmode.

From-SVN: r271748

tree-ssa-alias.c (same_type_for_tbaa): Return ture if main variants are pointer equivalent.

* tree-ssa-alias.c (same_type_for_tbaa): Return ture if main
variants are pointer equivalent.

From-SVN: r271747

re PR c++/89875 (invalid typeof reference to a member of an incomplete struct accepted at function scope)

/cp
2019-05-29  Paolo Carlini  <paolo.carlini@oracle.com>

PR c++/89875
* parser.c (cp_parser_sizeof_operand): When the type-id production
did not work out commit to the tentative parse.

/testsuite
2019-05-29  Paolo Carlini  <paolo.carlini@oracle.com>

PR c++/89875
* g++.dg/cpp0x/decltype-pr66548.C: Remove xfail.
* g++.dg/template/sizeof-template-argument.C: Adjust expected error.

From-SVN: r271746

Avoid -Wunused-parameter warnings from testsuite utility

* testsuite/util/testsuite_api.h: Remove names of unused parameters.

From-SVN: r271741

PR libstdc++/85494 use rdseed and rand_s in std::random_device

Add support for additional sources of randomness to std::random_device,
to allow using RDSEED for Intel CPUs and rand_s for Windows. When
supported these can be selected using the tokens "rdseed" and "rand_s".
For *-w64-mingw32 targets the "default" token will now use rand_s, and
for other i?86-*-* and x86_64-*-* targets it will try to use "rdseed"
first, then "rdrand", and finally "/dev/urandom".

To simplify the declaration of std::random_device in <bits/random.h> the
constructors now unconditionally call _M_init instead of _M_init_pretr1,
and the function call operator now unconditionally calls _M_getval. The
library code now decides whether _M_init and _M_getval should use a real
source of randomness or the mt19937 engine.

Existing code compiled against old libstdc++ headers will still call
_M_init_pretr1 and _M_getval_pretr1, but those functions now forward to
_M_init and _M_getval if a real source of randomness is available. This
means existing code compiled for mingw-w64 will start to use rand_s just
by linking to a new libstdc++.dll.

* acinclude.m4 (GLIBCXX_CHECK_X86_RDSEED): Define macro to check if
the assembler supports rdseed.
* config.h.in: Regenerate.
* configure: Regenerate.
* configure.ac: Use GLIBCXX_CHECK_X86_RDSEED.
* config/os/mingw32-w64/os_defines.h (_GLIBCXX_USE_CRT_RAND_S): Define.
* doc/html/*: Regenerate.
* doc/xml/manual/status_cxx2011.xml: Document new tokens.
* include/bits/random.h (random_device::random_device()): Always call
_M_init rather than _M_init_pretr1.
(random_device::random_device(const string&)): Likewise.
(random_device::operator()()): Always call _M_getval().
(random_device::_M_file): Replace first member of union with an
anonymous struct, with _M_file as its first member.
* src/c++11/random.cc [_GLIBCXX_X86_RDRAND] (USE_RDRAND): Define.
[_GLIBCXX_X86_RDSEED] (USE_RDSEED): Define.
(USE_MT19937): Define if none of the above are defined.
(USE_POSIX_FILE_IO): Define.
(_M_strtoul): Remove.
[USE_RDSEED] (__x86_rdseed): Define new function.
[_GLIBCXX_USE_CRT_RAND_S] (__winxp_rand_s): Define new function.
(random_device::_M_init(const string&)): Initialize new union members.
Add support for "rdseed" and "rand_s" tokens. Decide what the
"default" token does according to which USE_* macros are defined.
[USE_POSIX_FILE_IO]: Store a file descriptor.
[USE_MT19937]: Forward to _M_init_pretr1 instead.
(random_device::_M_init_pretr1(const string&)) [USE_MT19937]: Inline
code from _M_strtoul.
[!USE_MT19937]: Call _M_init, transforming the old default token or
numeric tokens to "default".
(random_device::_M_fini()) [USE_POSIX_FILE_IO]: Use close not fclose.
(random_device::_M_getval()): Use new union members to obtain a
random number from the stored function pointer or file descriptor.
[USE_MT19937]: Obtain a value from the mt19937 engine.
(random_device::_M_getval_pretr1()): Call _M_getval().
(random_device::_M_getentropy()) [USE_POSIX_FILE_IO]: Use _M_fd
instead of fileno.
[!USE_MT19937] (mersenne_twister): Do not instantiate when not needed.
* testsuite/26_numerics/random/random_device/85494.cc: New test.

From-SVN: r271740

This patch implements the [u]avgM3_floor and [u]avgM3_ceil optabs for SVE2.

From-SVN: r271739

re PR fortran/90329 (Incompatibility between gfortran and C lapack calls)

PR fortran/90329
* lang.opt (fbroken-callers): Remove.
(ftail-call-workaround, ftail-call-workaround=): New options.
* gfortran.h (struct gfc_namespace): Add implicit_interface_calls.
* interface.c (gfc_procedure_use): Set implicit_interface_calls
for calls to implicit interface procedures.
* trans-decl.c (create_function_arglist): Use flag_tail_call_workaround
instead of flag_broken_callers.  If it is not 2, also require
sym->ns->implicit_interface_calls.
* invoke.texi (fbroken-callers): Remove documentation.
(ftail-call-workaround, ftail-call-workaround=): Document.

From-SVN: r271738

re PR bootstrap/90543 (Build failure on MINGW for gcc-9.1.0)

PR bootstrap/90543
* optc-save-gen.awk: In cl_optimization_print, use correct condition
for var_opt_string printing.  In cl_optimization_print_diff, print
(null) instead of invoking undefined behavior if one of the
var_opt_string pointers is NULL and use && instead of first || in the
guarding condition.  For var_target_other options, handle const char *
target variables similarly to const char * optimize node variables.

From-SVN: r271736

[PATCH 3/3][GCC][AARCH64] Add support for pointer authentication B key

gcc/
2019-05-29  Sam Tebbs  <sam.tebbs@arm.com>

* config/aarch64/aarch64-builtins.c (aarch64_builtins): Add
AARCH64_PAUTH_BUILTIN_AUTIB1716 and AARCH64_PAUTH_BUILTIN_PACIB1716.
* config/aarch64/aarch64-builtins.c (aarch64_init_pauth_hint_builtins):
Add autib1716 and pacib1716 initialisation.
* config/aarch64/aarch64-builtins.c (aarch64_expand_builtin): Add checks
for autib1716 and pacib1716.
* config/aarch64/aarch64-protos.h (aarch64_key_type,
aarch64_post_cfi_startproc): Define.
* config/aarch64/aarch64-protos.h (aarch64_ra_sign_key): Define extern.
* config/aarch64/aarch64.c (aarch64_handle_standard_branch_protection,
aarch64_handle_pac_ret_protection): Set default sign key to A.
* config/aarch64/aarch64.c (aarch64_expand_epilogue,
aarch64_expand_prologue): Add check for b-key.
* config/aarch64/aarch64.c (aarch64_ra_sign_key,
aarch64_post_cfi_startproc, aarch64_handle_pac_ret_b_key): Define.
* config/aarch64/aarch64.h (TARGET_ASM_POST_CFI_STARTPROC): Define.
* config/aarch64/aarch64.c (aarch64_pac_ret_subtypes): Add "b-key".
* config/aarch64/aarch64.md (unspec): Add UNSPEC_AUTIA1716,
UNSPEC_AUTIB1716, UNSPEC_AUTIASP, UNSPEC_AUTIBSP, UNSPEC_PACIA1716,
UNSPEC_PACIB1716, UNSPEC_PACIASP, UNSPEC_PACIBSP.
* config/aarch64/aarch64.md (do_return): Add check for b-key.
* config/aarch64/aarch64.md (<pauth_mnem_prefix>sp): Replace
pauth_hint_num_a with pauth_hint_num.
* config/aarch64/aarch64.md (<pauth_mnem_prefix>1716): Replace
pauth_hint_num_a with pauth_hint_num.
* config/aarch64/aarch64.opt (msign-return-address=): Deprecate.
* config/aarch64/iterators.md (PAUTH_LR_SP): Add UNSPEC_AUTIASP,
UNSPEC_AUTIBSP, UNSPEC_PACIASP, UNSPEC_PACIBSP.
* config/aarch64/iterators.md (PAUTH_17_16): Add UNSPEC_AUTIA1716,
UNSPEC_AUTIB1716, UNSPEC_PACIA1716, UNSPEC_PACIB1716.
* config/aarch64/iterators.md (pauth_mnem_prefix): Add UNSPEC_AUTIA1716,
UNSPEC_AUTIB1716, UNSPEC_PACIA1716, UNSPEC_PACIB1716, UNSPEC_AUTIASP,
UNSPEC_AUTIBSP, UNSPEC_PACIASP, UNSPEC_PACIBSP.
* config/aarch64/iterators.md (pauth_hint_num_a): Replace
UNSPEC_PACI1716 and UNSPEC_AUTI1716 with UNSPEC_PACIA1716 and
UNSPEC_AUTIA1716 respectively.
* config/aarch64/iterators.md (pauth_hint_num_a): Rename to pauth_hint_num
and add UNSPEC_PACIBSP, UNSPEC_AUTIBSP, UNSPEC_PACIB1716, UNSPEC_AUTIB1716.
* doc/invoke.texi (-mbranch-protection): Add b-key type.
* config/aarch64/aarch64-bti-insert.c (aarch64_pac_insn_p): Rename
UNSPEC_PACISP to UNSPEC_PACIASP and UNSPEC_PACIBSP.

gcc/testsuite
2019-05-29  Sam Tebbs  <sam.tebbs@arm.com>

* gcc.target/aarch64/return_address_sign_b_1.c: New file.
* gcc.target/aarch64/return_address_sign_b_2.c: New file.
* gcc.target/aarch64/return_address_sign_b_3.c: New file.
* gcc.target/aarch64/return_address_sign_b_exception.c: New file.
* gcc.target/aarch64/return_address_sign_ab_exception.c: New file.
* gcc.target/aarch64/return_address_sign_builtin.c: New file

libgcc/
2019-05-29  Sam Tebbs  <sam.tebbs@arm.com>

* config/aarch64/aarch64-unwind.h (aarch64_cie_signed_with_b_key): New
function.
* config/aarch64/aarch64-unwind.h (aarch64_post_extract_frame_addr,
aarch64_post_frob_eh_handler_addr): Add check for b-key.
* config/aarch64/aarch64-unwind-h (aarch64_post_extract_frame_addr,
aarch64_post_frob_eh_handler_addr, aarch64_post_frob_update_context):
Rename RA_A_SIGNED_BIT to RA_SIGNED_BIT.
* unwind-dw2-fde.c (get_cie_encoding): Add check for 'B' in augmentation
string.
* unwind-dw2.c (extract_cie_info): Add check for 'B' in augmentation
string.
(RA_A_SIGNED_BIT): Rename to RA_SIGNED_BIT.

From-SVN: r271735

gimplify.c (struct gimplify_omp_ctx): Add clauses member.

* gimplify.c (struct gimplify_omp_ctx): Add clauses member.
(gimplify_scan_omp_clauses): Initialize ctx->clauses.
(gimplify_adjust_omp_clauses_1): Transform lastprivate conditional
explicit clause on combined parallel into implicit shared clause.
(gimplify_adjust_omp_clauses): Move lastprivate conditional clause
and firstprivate if the decl has one too from combined parallel to
the worksharing construct.
gcc/testsuite/
* c-c++-common/gomp/lastprivate-conditional-2.c (foo): Don't expect
sorry on lastprivate conditional on parallel for.
* c-c++-common/gomp/lastprivate-conditional-3.c (foo): Add tests for
lastprivate conditional warnings on parallel for constructs.
* c-c++-common/gomp/lastprivate-conditional-4.c: New test.
libgomp/
* testsuite/libgomp.c-c++-common/lastprivate_conditional_4.c: Rename
to ...
* testsuite/libgomp.c-c++-common/lastprivate-conditional-4.c: ... this.
* testsuite/libgomp.c-c++-common/lastprivate-conditional-5.c: New test.
* testsuite/libgomp.c-c++-common/lastprivate-conditional-6.c: New test.

From-SVN: r271733

re PR c/90628 (__builtin_mul_overflow writes to const qualified integer)

PR c/90628
* c-common.c (check_builtin_function_arguments)
<case BUILTIN_*_OVERFLOW>: Diagnose pointer to const qualified integer
as last argument.

* c-c++-common/builtin-arith-overflow-3.c: New test.

From-SVN: r271732

P1091R3 - Extending structured bindings to be more like var decls P1381R1 - Reference capture of structured bindings

P1091R3 - Extending structured bindings to be more like var decls
P1381R1 - Reference capture of structured bindings
* decl.c (cp_maybe_mangle_decomp): Handle TREE_STATIC decls even at
function scope.
(cp_finish_decomp): Copy over various decl properties from decl to
v[i] in the tuple case.
(grokdeclarator): Allow static, thread_local and __thread for C++2a
and use pedwarn instead of error for older standard revisions.
Make other structured binding diagnostic messages more i18n friendly.

* g++.dg/cpp1z/decomp3.C (test): For static, expect only warning
instead of error and only for c++17_down.  Add a thread_local test.
(z2): Add a __thread test.
* g++.dg/cpp2a/decomp1.C: New test.
* g++.dg/cpp2a/decomp1-aux.cc: New file.
* g++.dg/cpp2a/decomp2.C: New test.
* g++.dg/cpp2a/decomp3.C: New test.

From-SVN: r271731

P1091R3 - Extending structured bindings to be more like var decls P1381R1 - Reference capture of structured bindings

P1091R3 - Extending structured bindings to be more like var decls
P1381R1 - Reference capture of structured bindings
* decl.c (cp_maybe_mangle_decomp): Handle TREE_STATIC decls even at
function scope.
(cp_finish_decomp): Copy over various decl properties from decl to
v[i] in the tuple case.
(grokdeclarator): Allow static, thread_local and __thread for C++2a
and use pedwarn instead of error for older standard revisions.
Make other structured binding diagnostic messages more i18n friendly.

* g++.dg/cpp1z/decomp3.C (test): For static, expect only warning
instead of error and only for c++17_down.  Add a thread_local test.
(z2): Add a __thread test.
* g++.dg/cpp2a/decomp1.C: New test.
* g++.dg/cpp2a/decomp1-aux.cc: New file.
* g++.dg/cpp2a/decomp2.C: New test.
* g++.dg/cpp2a/decomp3.C: New test.

From-SVN: r271730

Remove duplicite dg-compile (PR testsuite/90657).

2019-05-29  Martin Liska  <mliska@suse.cz>

PR testsuite/90657
* gcc.dg/ipa/pr90555.c: Remove duplicite dg-compile.

From-SVN: r271729

rs6000-cpus.def (OTHER_FUTURES_MASK): New #define.

[gcc]

2019-05-28  Bill Schmidt  <wschmidt@linux.ibm.com>
    Michael Meissner  <meissner@linux.ibm.com>

* config/rs6000/rs6000-cpus.def (OTHER_FUTURES_MASK): New #define.

[gcc/testsuite]

2019-05-28  Bill Schmidt  <wschmidt@linux.ibm.com>

* gcc.target/powerpc/localentry-detect-1.c: New file.

Co-Authored-By: Michael Meissner <meissner@linux.ibm.com>
From-SVN: r271728

rtl.h (LABEL_REF_P): New #define.

2019-05-28  Michael Meissner  <meissner@linux.ibm.com>

* rtl.h (LABEL_REF_P): New #define.

From-SVN: r271727

Daily bump.

From-SVN: r271726

pa.c (hppa_profile_hook): Remove offset adjustment.

* config/pa/pa.c (hppa_profile_hook): Remove offset adjustment.

From-SVN: r271720

PR libstdc++/90634 reduce allocations in filesystem::path construction

PR libstdc++/90634
* include/experimental/bits/fs_path.h (path::path(path&&)): Only call
_M_split_cmpts() for a path with multiple components.
(path::_S_is_dir_sep()): Add missing 'static' keyword to function.
* src/filesystem/path.cc (path::_M_split_cmpts()): Count number of
components and reserve space in vector. Return early when there is
only one component.
* testsuite/27_io/filesystem/path/construct/90634.cc: New test.
* testsuite/experimental/filesystem/path/construct/90634.cc: New test.

From-SVN: r271717

Fix C++14-only code in testsuite utility

* testsuite/util/testsuite_fs.h (compare_paths): Use three-argument
form of std::equals for C++11 compatibility.

From-SVN: r271716

Remove pre-Solaris 11/SPARC unwinding support

* config/sparc/sol2-unwind.h [__arch64__] (sparc64_is_sighandler):
Remove Solaris 9 and 10 support.
(sparc_is_sighandler): Likewise.

From-SVN: r271715

[C++ PATCH] template specializations

https://gcc.gnu.org/ml/gcc-patches/2019-05/msg01844.html
* decl.c (duplicate_decls): Assert a template newdecl has no
specializations.

From-SVN: r271713

PR c++/90548 - ICE with generic lambda and empty pack.

* pt.c (tsubst_copy_and_build): Handle pack expansion properly.

* g++.dg/cpp1y/lambda-generic-90548.C: New test.

From-SVN: r271705

Current vectoriser doesn't support masked loads for SLP.

Current vectoriser doesn't support masked loads for SLP. We should add that, to
allow things like:

void
f (int *restrict x, int *restrict y, int *restrict z, int n)
{
  for (int i = 0; i < n; i += 2)
    {
      x[i] = y[i] ? z[i] : 1;
      x[i + 1] = y[i + 1] ? z[i + 1] : 2;
    }
}

to be vectorized using contiguous loads rather than LD2 and ST2.

This patch was motivated by SVE, but it is completely generic and should apply
to any architecture with masked loads.

From-SVN: r271704

Remove obsolete comment about use_thunk

* config/alpha/alpha.c [TARGET_ABI_OSF] (alpha_output_mi_thunk_osf):
Remove obsolete use_thunk reference.
* config/i386/i386.c (x86_output_mi_thunk): Likewise.
* config/ia64/ia64.c (ia64_output_mi_thunk): Likewise.
* config/nios2/nios2.c (nios2_asm_output_mi_thunk): Likewise.
* config/or1k/or1k.c (or1k_output_mi_thunk): Likewise.
* config/rs6000/rs6000.c (rs6000_output_mi_thunk): Likewise.
* config/sh/sh.c (sh_output_mi_thunk): Likewise.
* config/sparc/sparc.c (sparc_output_mi_thunk): Likewise.
* config/tilegx/tilegx.c (tilegx_output_mi_thunk): Likewise.
* config/tilepro/tilepro.c (tilepro_asm_output_mi_thunk): Likewise.

From-SVN: r271703

[PATCH] Commonize anon-name generation

https://gcc.gnu.org/ml/gcc-patches/2019-05/msg01699.html
* tree.h (IDENTIFIER_ANON_P): New.
(anon_aggrname_format, anon_aggname_p): Don't declare.
(make_anon_name): Declare.
* lto-streamer-out.c (DFS::DFS_write_tree_body): Use IDENTIFIER_ANON_P.
(hash_tree): Likewise.
* tree-streamer-out.c (write_ts_decl_minimal_tree): Likewise.
* tree.c (anon_aggrname_p, anon_aggrname_format): Delete.
(anon_cnt, make_anon_name): New.

  gcc/cp/
* cp-tree.h (make_anon_name): Drop declaration.
(TYPE_UNNAMED_P): Use IDENTIFIER_ANON_P.
* cp-lang.c (cxx_dwarf_name): Likewise.
* class.c (find_flexarrays): Likewise.
* decl.c (name_unnamed_type, xref_tag_1): Likewise.
* error.c (dump_aggr_type): Likewise.
* pt.c (push_template_decl_real): Likewise.
* name-lookup.c (consider_binding_level): Likewise.
(anon_cnt, make_anon_name): Delete.

gcc/d/
* types.cc (fixup_anonymous_offset): Use IDENTIFIER_ANON_P.
(layout_aggregate_members): Use make_anon_name.

From-SVN: r271702

pr50749-qihisi-predec-3.c: Disable loop distribution.

* testsuite/gcc.target/sh/pr50749-qihisi-predec-3.c: Disable
loop distribution.

From-SVN: r271701

Support again multiple --help options (PR other/90315).

2019-05-28  Martin Liska  <mliska@suse.cz>

PR other/90315
* opts-global.c (decode_options): Print help for all
help_option_arguments.
* opts.c (print_help): Add new argument.
(common_handle_option): Remember all values into
help_option_arguments.
* opts.h (print_help): Add new argument.

From-SVN: r271700

rs6000: Improve p9-dimode* testcases

This removes the unnecessary restriction to 32-bit (all three ways).
It also scans for mtvsr*, not just mtvsrd.  Finally, it uses the "wa"
constraints instead of "wi" in the inline asm statements.

gcc/testsuite/
* gcc.target/powerpc/p9-dimode1.c: Don't restrict to -m64.  Check for
all mtvsr*, not just mtvsrd.  Use "wa" instead of "wi" constraints.
* gcc.target/powerpc/p9-dimode2.c: Ditto.

From-SVN: r271696

Handle loop fields in IPA ICF (PR ipa/90555).

2019-05-28  Martin Liska  <mliska@suse.cz>

PR ipa/90555
* ipa-icf-gimple.c (func_checker::compare_loops): New function.
* ipa-icf-gimple.h (func_checker::compare_loops): Likewise.
(func_checker::compare_bb): Call compare_loops.
2019-05-28  Martin Liska  <mliska@suse.cz>

PR ipa/90555
* gcc.dg/ipa/pr90555.c: New test.

From-SVN: r271695

* gcc-interface/utils.c (handle_stack_protect_attribute): Move around.

From-SVN: r271694

implementation_defined_pragmas.rst (Machine_Attribute): Document additional optional parameters.

* doc/gnat_rm/implementation_defined_pragmas.rst (Machine_Attribute):
Document additional optional parameters.
* sem_prag.adb (Analyze_Pragma) <Pragma_Machine_Attribute>: Accept
more than one optional parameter.
* gcc-interface/decl.c (prepend_one_attribute_pragma): Alphabetize
the list of supported pragmas.  Simplify the handling of parameters
and add support for more than one optional parameter.
* gcc-interface/utils.c (attr_cold_hot_exclusions): New constant.
(gnat_internal_attribute_table): Add entry for no_icf, noipa, flatten,
used, cold, hot, target and target_clones.
(begin_subprog_body): Do not create the RTL for the subprogram here.
(handle_noicf_attribute): New static function.
(handle_noipa_attribute): Likewise.
(handle_flatten_attribute): Likewise.
(handle_used_attribute): Likewise.
(handle_cold_attribute): Likewise.
(handle_hot_attribute): Likewise.
(handle_target_attribute): Likewise.
(handle_target_clones_attribute): Likewise.

From-SVN: r271693

trans.c (lvalue_required_for_attribute_p): Return 0 for 'Size too.

* gcc-interface/trans.c (lvalue_required_for_attribute_p): Return 0
for 'Size too.
(Identifier_to_gnu): Use the actual subtype for a reference to a
packed array in a return statement.
(Attribute_to_gnu) <Attr_Size>: Do not strip VIEW_CONVERT_EXPRs from
the prefix in every case.

From-SVN: r271691

trans.c (gnat_to_gnu): Remove superfluous tests on Backend_Overflow_Checks_On_Target and rework comments.

* gcc-interface/trans.c (gnat_to_gnu): Remove superfluous tests on
Backend_Overflow_Checks_On_Target and rework comments.

From-SVN: r271689

trans.c (walk_nesting_tree): New static function.

* gcc-interface/trans.c (walk_nesting_tree): New static function.
(finalize_nrv): Use it to walk the entire nesting tree.

From-SVN: r271685

decl.c (gnat_to_gnu_entity): Remove obsolete test on Is_For_Access_Subtype.

* gcc-interface/decl.c (gnat_to_gnu_entity) <E_Record_Subtype>: Remove
obsolete test on Is_For_Access_Subtype.

From-SVN: r271683

decl.c (components_to_record): Set a name on the type created for the REP part, if any.

* gcc-interface/decl.c (components_to_record): Set a name on the type
created for the REP part, if any.
* gcc-interface/utils.c (finish_record_type): Only take the maximum
when merging sizes for a variant part at offset 0.
(merge_sizes): Rename has_rep parameter into max.

From-SVN: r271681

utils.c (gnat_internal_attribute_table): Add support for stack_protect attribute.

* gcc-interface/utils.c (gnat_internal_attribute_table): Add support
for stack_protect attribute.
(handle_stack_protect_attribute): New static function.

From-SVN: r271680

decl.c (intrin_arglists_compatible_p): Do not return false if the internal builtin uses a variable list.

* gcc-interface/decl.c (intrin_arglists_compatible_p): Do not return
false if the internal builtin uses a variable list.

From-SVN: r271679

Add GCC support to ENQCMD.

gcc/ChangeLog

2019-01-23  Xuepeng Guo  <xuepeng.guo@intel.com>

* common/config/i386/i386-common.c
(OPTION_MASK_ISA_ENQCMD_SET,
OPTION_MASK_ISA_ENQCMD_UNSET): New macros.
(ix86_handle_option): Handle -menqcmd.
* config.gcc (enqcmdintrin.h): New header file.
* config/i386/cpuid.h (bit_ENQCMD): New bit.
* config/i386/driver-i386.c (host_detect_local_cpu): Handle
-menqcmd.
* config/i386/i386-builtin-types.def ((INT, PVOID, PCVOID)): New
function type.
* config/i386/i386-builtin.def (__builtin_ia32_enqcmd,
__builtin_ia32_enqcmds): New builtins.
* config/i386/i386-c.c (__ENQCMD__): New macro.
* config/i386/i386-option.c (ix86_target_string): Add
-menqcmd.
(ix86_valid_target_attribute_inner_p): Likewise.
* config/i386/i386-expand.c
(ix86_expand_builtin): Expand IX86_BUILTIN_ENQCMD and
IX86_BUILTIN_ENQCMDS.
* config/i386/i386.h (TARGET_ENQCMD): New.
* config/i386/i386.md (UNSPECV_ENQCMD, UNSPECV_ENQCMDS): New.
(@enqcmd<enqcmd_sfx>_<mode>): New insn pattern.
(movdir64b_<mode>): Parameterize to enable share expansion code
with ENQCMD in function ix86_expand_builtin.
* config/i386/i386.opt: Add -menqcmd.
* config/i386/immintrin.h: Include enqcmdintrin.h.
* config/i386/enqcmdintrin.h: New intrinsic file.
* doc/invoke.texi: Add -menqcmd.

gcc/testsuite/ChangeLog

2019-01-23  Xuepeng Guo  <xuepeng.guo@intel.com>

* gcc.target/i386/enqcmd.c: New test.
* gcc.target/i386/enqcmds.c: Likewise.
* g++.dg/other/i386-2.C: Add -menqcmd.
* g++.dg/other/i386-3.C: Likewise.
* gcc.target/i386/sse-12.c: Likewise.
* gcc.target/i386/sse-13.c: Likewise.
* gcc.target/i386/sse-14.c: Likewise.
* gcc.target/i386/sse-23.c: Likewise.

From-SVN: r271678

Daily bump.

From-SVN: r271677

gimplify.c (gimplify_scan_omp_clauses): Allow lastprivate conditional on sections construct.

* gimplify.c (gimplify_scan_omp_clauses): Allow lastprivate conditional
on sections construct.
* omp-low.c (lower_lastprivate_conditional_clauses): Handle sections
construct.
(lower_omp_sections): Handle lastprivate conditional.
(lower_omp_1) <case GIMPLE_ASSIGN>: Handle sections construct with
lastprivate_conditional_map.
* omp-expand.c (expand_omp_sections): Handle lastprivate conditional.
libgomp/
* testsuite/libgomp.c-c++-common/lastprivate_conditional_4.c: New test.

From-SVN: r271673

omp-low.c (lower_omp_1): Look through ordered...

* omp-low.c (lower_omp_1) <case GIMPLE_ASSIGN>: Look through ordered,
critical, taskgroup and section regions when looking for a region
with non-NULL lastprivate_conditional_map.

* testsuite/libgomp.c-c++-common/lastprivate-conditional-3.c: New test.

From-SVN: r271672