The implementations of std::make_shared for -frtti and -fno-rtti are not
compatible, because they pass different arguments to
_Sp_counted_ptr_inplace::_M_get_deleter and so can't interoperate.
Either the argument doesn't match the expected value, and so the
shared_ptr::_M_ptr member is never set, or the type-punned reference is
treated as a real std::type_info object and gets dereferenced.

This patch removes the differences between -frtti and -fno-rtti, so that
typeid is never used, and the type-punned reference is used in both
cases. For backwards compatibility with existing code that passes
typeid(_Sp_make_shared_tag) that still needs to be handled, but only
after checking that the argument is not the type-punned reference (so
it's safe to treat as a real std::type_info object). The reference is
bound to an object of literal type, so that it doesn't need a guard
variable to make its initialization thread-safe.

This patch also fixes 87520 by ensuring that the type-punned reference
is bound to "a region of storage of suitable size and alignment to
contain an object of the reference's type" (as per the proposed
resolution of Core DR 453).

If all objects are built with the fixed version of GCC then -frtti and
-fno-rtti can be mixed freely and std::make_shared will work correctly.
If some objects are built with unfixed GCC versions then problems can
still arise, depending on which template instantiations are kept by the
linker.

	PR libstdc++/85930
	PR libstdc++/87520
	* include/bits/shared_ptr_base.h (_Sp_make_shared_tag::_S_ti)
	[__cpp_rtti]: Define even when RTTI is enabled. Use array of
	sizeof(type_info) so that type-punned reference binds to an object
	of the correct size as well as correct alignment.
	(_Sp_counted_ptr_inplace::_M_get_deleter) [__cpp_rtti]: Check for
	_S_ti() reference even when RTTI is enabled.
	(__shared_ptr(_Sp_make_shared_tag, const _Alloc&, _Args&&...))
	[__cpp_rtti]: Pass _S_ti() instead of typeid(_Sp_make_shared_tag).

From-SVN: r266376

From-SVN: r266374

From-SVN: r266373

2018-11-22  Richard Biener  <rguenther@suse.de>

	PR lto/87229
	PR lto/88112
	* lto-streamer-out.c (lto_is_streamable): Allow CALL_EXPRs
	which can appear in size expressions.
	* tree-streamer-in.c (unpack_ts_base_value_fields): Stream
	CALL_EXPR_BY_DESCRIPTOR.
	(streamer_read_tree_bitfields): Stream CALL_EXPR_IFN.
	* tree-streamer-out.c (pack_ts_base_value_fields): Stream
	CALL_EXPR_BY_DESCRIPTOR.
	(streamer_write_tree_bitfields): Stream CALL_EXPR_IFN.

	Revert
	PR lto/87229
	* tree.c (free_lang_data_in_one_sizepos): Free non-gimple-val
	sizepos values.

From-SVN: r266372

2018-11-22  Richard Biener  <rguenther@suse.de>

	PR tree-optimization/88069
	* tree-ssa-sccvn.c (visit_phi): Tweak previous fix to not
	apply to default defs.

From-SVN: r266371

	PR target/85644
	PR target/86832
	* config/i386/i386.c (ix86_option_override_internal): Default
	ix86_stack_protector_guard to SSP_TLS only if TARGET_THREAD_SSP_OFFSET
	is defined.
	* config/i386/i386.md (stack_protect_set, stack_protect_set_<mode>,
	stack_protect_test, stack_protect_test_<mode>): Use empty condition
	instead of TARGET_SSP_TLS_GUARD.

From-SVN: r266370

	PR c++/87386
	* parser.c (cp_parser_operator): Use str.get_value () instead of just
	str in USERDEF_LITERAL_VALUE and USERDEF_LITERAL_SUFFIX_ID arguments.

From-SVN: r266369

2018-11-22  Martin Liska  <mliska@suse.cz>

	PR sanitizer/88017
	* config/i386/i386.c (ix86_option_override_internal):
2018-11-22  Martin Liska  <mliska@suse.cz>

	PR sanitizer/88017
	* gcc.dg/tsan/pr88017.c: New test.

From-SVN: r266368

The old __sync builtins have been deprecated for a long time now in
favor of the __atomic builtins following the C++11/C11 memory model.
This patch converts libgfortran to use the modern __atomic builtins.

At the same time I weakened the consistency to relaxed for
incrementing and decrementing the counter, and acquire-release when
decrementing to check whether the counter is 0 and the unit can be
freed.  This is similar to e.g. std::shared_ptr in C++.

Regtested on x86_64-pc-linux-gnu.

libgfortran/ChangeLog:

2018-11-22  Janne Blomqvist  <jb@gcc.gnu.org>

	* acinclude.m4 (LIBGFOR_CHECK_ATOMIC_FETCH_ADD): Rename and test
	presence of atomic builtins instead of sync builtins.
	* configure.ac (LIBGFOR_CHECK_ATOMIC_FETCH_ADD): Call new test.
	* io/io.h (inc_waiting_locked): Use __atomic_fetch_add.
	(predec_waiting_locked): Use __atomic_add_fetch.
	(dec_waiting_unlocked): Use __atomic_fetch_add.
	* config.h.in: Regenerated.
	* configure: Regenerated.
        * Makefile.in: Regenerated.

From-SVN: r266367

libphobos/ChangeLog:

2018-11-22  Johannes Pfau  <johannespfau@gmail.com>

	PR d/87824
	* testsuite/libphobos.shared/shared.exp: Set proper path to phobos
	library for multilib builds.

From-SVN: r266366

From-SVN: r266364

Factor out new function read_initial_length in dwarf.c.

Bootstrapped and reg-tested on x86_64.

2018-11-22  Tom de Vries  <tdevries@suse.de>

	* dwarf.c (read_initial_length): Factor out of ...
	(build_address_map, read_line_info): ... here.

From-SVN: r266361

	PR c++/88122
	* method.c (maybe_explain_implicit_delete): If
	FUNCTION_FIRST_USER_PARMTYPE (decl) is NULL, set const_p to false
	instead of ICEing.

	* g++.dg/cpp0x/implicit15.C: New test.

From-SVN: r266360

	PR c++/87386
	* parser.c (cp_parser_primary_expression): Use
	id_expression.get_location () instead of id_expr_token->location.
	Adjust the range from id_expr_token->location to
	id_expressio.get_finish ().
	(cp_parser_operator_function_id): Pass location of the operator
	token down to cp_parser_operator.
	(cp_parser_operator): Add start_loc argument, always construct a
	location with caret at start_loc and range from start_loc to the
	finish of the last token.
gcc/testsuite/
	* g++.dg/diagnostic/pr87386.C: New test.
	* g++.dg/parse/error17.C: Adjust expected diagnostics.
libstdc++-v3/
	* testsuite/20_util/scoped_allocator/69293_neg.cc: Adjust expected
	line.
	* testsuite/20_util/uses_allocator/cons_neg.cc: Likewise.
	* testsuite/20_util/uses_allocator/69293_neg.cc: Likewise.
	* testsuite/experimental/propagate_const/requirements2.cc: Likewise.
	* testsuite/experimental/propagate_const/requirements3.cc: Likewise.
	* testsuite/experimental/propagate_const/requirements4.cc: Likewise.
	* testsuite/experimental/propagate_const/requirements5.cc: Likewise.

From-SVN: r266359

	2013-10-26  Vladimir Makarov  <vmakarov@redhat.com>

	Revert:
	2013-10-25  Vladimir Makarov  <vmakarov@redhat.com>

	* lra-spills.c (lra_final_code_change): Remove useless move insns.

From-SVN: r266358

	PR rtl-optimization/85925
	* gcc.c-torture/execute/20181120-1.c: Require effective target
	int32plus.
	(u): New variable.
	(main): Compare d against u.f1 rather than 0x101.  Use 0x4030201
	instead of 0x10101.

From-SVN: r266357

	PR middle-end/88129
	* function.c (expand_function_end): Do not emit extra blockage insn.

From-SVN: r266356

	PR target/85667
	* config/i386/i386.c (function_value_ms_64): Return AX_REG instead
	of FIRST_SSE_REG for 4 or 8 byte modes.

testsuite/ChangeLog:

	PR target/85667
	* gcc.target/pr85667-1.c: New testcase.
	* gcc.target/pr85667-2.c: New testcase.
	* gcc.target/pr85667-3.c: New testcase.
	* gcc.target/pr85667-4.c: New testcase.

From-SVN: r266355

From-SVN: r266354

	PR libstdc++/88111
	* include/std/memory_resource (pool_options): Add Doxygen comments.
	* src/c++17/memory_resource.cc (pool_sizes): Only use suitable values
	on targets with 16-bit or 20-bit size_t type.
	(munge_options): Make default values depend on width of size_t type.

From-SVN: r266353

On 16-bit msp430-elf size_t is either 16 bits or 20 bits, and so can't
represent all values of the uint32_t type used for bitset::size_type.
Using the smaller of size_t and uint32_t for size_type ensures it fits
in size_t.

	PR libstdc++/88113
	* src/c++17/memory_resource.cc (bitset::size_type): Use the smaller
	of uint32_t and size_t.
	(bitset::size(), bitset::free(), bitset::update_next_word())
	(bitset::max_blocks_per_chunk(), bitset::max_word_index()): Use
	size_type consistently instead of size_t.
	(chunk): Adjust static_assert checking sizeof(chunk).

From-SVN: r266352

re PR ipa/87957 (ICE tree check: expected tree that contains ‘decl minimal’ structure, have ‘identifier_node’ in warn_odr, at ipa-devirt.c:1051 since r265519)


	PR lto/87957
	* g++.dg/lto/odr-1_0.C: Extend by mismatched enum.
	* g++.dg/lto/odr-1_1.C: Extend by mismatched enum.
	* g++.dg/lto/odr-2_0.C: New.
	* g++.dg/lto/odr-2_0.C: New.
	* g++.dg/lto/odr-3_1.C: New.
	* g++.dg/lto/odr-3_1.C: New.

From-SVN: r266351

re PR ipa/87957 (ICE tree check: expected tree that contains ‘decl minimal’ structure, have ‘identifier_node’ in warn_odr, at ipa-devirt.c:1051 since r265519)


	PR lto/87957
	* tree.c (fld_decl_context): Break out from ...
	(free_lang_data_in_decl): ... here; free TREE_PUBLIC, TREE_PRIVATE
	DECL_ARTIFICIAL of TYPE_DECL; do not free TREE_TYPE of TYPE_DECL.
	(fld_incomplete_type_of): Build copy of TYP_DECL.
	* ipa-devirt.c (free_enum_values): Rename to ...
	(free_odr_warning_data): ... this one; free also duplicated TYPE_DECLs
	and TREE_TYPEs of TYPE_DECLs.
	(get_odr_type): Initialize odr_vtable_hash if needed.

From-SVN: r266350

In some cases of overriding or resetting locations, we might retain
discriminator info from earlier locations, when we should take
discriminator information from the overriding location or reset it.

for  gcc/ChangeLog

	* final.c (compute_discriminator): Declare.  Renamed from...
	(maybe_set_discriminator): ... this.  Set and return a local.
	(override_discriminator): New.
	(final_scan_insn_1): Set it.
	(notice_source_line): Adjust.  Always set discriminator.

From-SVN: r266349

re PR c++/87393 (gcc/cp/parser.c:13967:37:Unused Entity Issue: expression result unused: -Wunused-value since r251026)

	PR c++/87393
	* parser.c (cp_parser_linkage_specification): Remove useless
	dereference of the consume_open method result.

From-SVN: r266347

	PR target/87839
	* config/aarch64/atomics.md (@aarch64_compare_and_swap<mode>): Use
	rIJ constraint for aarch64_plus_operand rather than rn.

	* gcc.target/aarch64/pr87839.c: New test.

From-SVN: r266346

[PATCH][PR84877]Dynamically align the address for local parameter copy on the stack when required alignment is larger than MAX_SUPPORTED_STACK_ALIGNMENT


As described in PR84877. https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84877
The local copy of parameter on stack is not aligned.

For BLKmode paramters, a local copy on the stack will be saved.
There are three cases:
1) arguments passed partially on the stack, partially via registers.
2) arguments passed fully on the stack.
3) arguments passed via registers.

After the change here, in all three cases, the stack slot for the local
parameter copy is aligned by the data type.
The stack slot is the DECL_RTL of the parameter. All the references thereafter
in the function will refer to this RTL.

To populate the local copy on the stack,
For case 1) and 2), there are operations to move data from the caller's stack
(from incoming rtl) into callee's stack.
For case 3), the registers are directly saved into the stack slot.

In all cases, the destination address is properly aligned.
But for case 1) and case 2), the source address is not aligned by the type.
It is defined by the PCS how the arguments are prepared.
The block move operation is fulfilled by emit_block_move (). As far as I can see,
it will use the smaller alignment of source and destination.
This looks fine as long as we don't use instructions which requires a strict
larger alignment than the address actually has.

Here, it only changes receiving parameters.
The function assign_stack_local_1 will be called in various places.
Usually, the caller will constraint the ALIGN parameter.
For example via STACK_SLOT_ALIGNMENT macro.
assign_parm_setup_block will call assign_stack_local () with alignment from the
parameter type which in this case could be
larger than MAX_SUPPORTED_STACK_ALIGNMENT.

The alignment operation for parameter copy on the stack is similar to stack vars.
First, enough space is reserved on the stack. The size is fixed at compile time.
Instructions are emitted to dynamically get an aligned address at runtime
within this piece of memory.

This will unavoidably increase the usage of stack. However, it really depends on
how many over-aligned parameters are passed by value.


gcc/

2018-11-21  Renlin Li  <renlin.li@arm.com>

	PR middle-end/84877
	* explow.h (get_dynamic_stack_size): Declare it as external.
	* explow.c (record_new_stack_level): Remove function static attribute.
	* function.c (assign_stack_local_1): Dynamically align the stack slot
	addr for parameter copy on the stack.

gcc/testsuite/

2018-11-21  Renlin Li  <renlin.li@arm.com>

	PR middle-end/84877
	* gcc.dg/pr84877.c: New.

From-SVN: r266345

2018-11-21  Richard Biener  <rguenther@suse.de>

	PR bootstrap/88133
	* bitmap.c (bitmap_last_set_bit): Refactor to avoid warning.
	* Makefile.in (bitmap.o-warn): Remove again.

From-SVN: r266344

2018-11-20  Jeff Law  <law@redhat.com>

	PR tree-optimization/88069
	* tree-ssa-dom.c (record_equivalences_from_phis): Propagate away
	degenerate virtual PHIs.

From-SVN: r266343

Many x86 pmovzx/pmovsx instructions with memory operands are modeled in
a wrong way.  For example:

(define_insn "sse4_1_<code>v8qiv8hi2<mask_name>"
  [(set (match_operand:V8HI 0 "register_operand" "=Yr,*x,v")
    (any_extend:V8HI
      (vec_select:V8QI
        (match_operand:V16QI 1 "nonimmediate_operand" "Yrm,*xm,vm")
        (parallel [(const_int 0) (const_int 1)
               (const_int 2) (const_int 3)
               (const_int 4) (const_int 5)
               (const_int 6) (const_int 7)]))))]

should be defind for memory operands as:

(define_insn "sse4_1_<code>v8qiv8hi2<mask_name>"
  [(set (match_operand:V8HI 0 "register_operand" "=Yr,*x,v")
    (any_extend:V8HI
      (match_operand:V8QI "memory_operand" "m,m,m")))]

This patch updates them to

(define_insn "sse4_1_<code>v8qiv8hi2<mask_name>"
  [(set (match_operand:V8HI 0 "register_operand" "=Yr,*x,v")
	(any_extend:V8HI
	  (vec_select:V8QI
	    (match_operand:V16QI 1 "register_operand" "Yr,*x,v")
	    (parallel [(const_int 0) (const_int 1)
		       (const_int 2) (const_int 3)
		       (const_int 4) (const_int 5)
		       (const_int 6) (const_int 7)]))))]

(define_insn "*sse4_1_<code>v8qiv8hi2<mask_name>_1"
  [(set (match_operand:V8HI 0 "register_operand" "=Yr,*x,v")
	(any_extend:V8HI
	  (match_operand:V8QI "subreg_memory_operand" "m,m,m")))]

with a splitter:

(define_insn_and_split "*sse4_1_<code>v8qiv8hi2<mask_name>_2"
  [(set (match_operand:V8HI 0 "register_operand")
        (any_extend:V8HI
          (vec_select:V8QI
            (subreg:V16QI
              (vec_concat:V2DI
                (match_operand:DI 1 "memory_operand")
                (const_int 0)) 0)
            (parallel [(const_int 0) (const_int 1)
                       (const_int 2) (const_int 3)
                       (const_int 4) (const_int 5)
                       (const_int 6) (const_int 7)]))))]
  "TARGET_SSE4_1
   && <mask_avx512bw_condition>
   && <mask_avx512vl_condition>
  "&& can_create_pseudo_p ()"
  "#"
  "&& 1"
  [(set (match_dup 0)
        (any_extend:V8HI (match_dup 1)))]
  "operands[1] = adjust_address_nv (operands[1], V8QImode, 0);")

This patch requires updating apply_subst_iterator to handle
define_insn_and_split.

gcc/

	PR target/87317
	* config/i386/sse.md (sse4_1_<code>v8qiv8hi2<mask_name>): Replace
	nonimmediate_operand with register_operand.
	(avx2_<code>v8qiv8si2<mask_name>): Likewise.
	(sse4_1_<code>v4qiv4si2<mask_name>): Likewise.
	(sse4_1_<code>v4hiv4si2<mask_name>): Likewise.
	(sse4_1_<code>v2qiv2di2<mask_name>): Likewise.
	(avx512f_<code>v8qiv8di2<mask_name>): Likewise.
	(avx2_<code>v4qiv4di2<mask_name>): Likewise.
	(avx2_<code>v4hiv4di2<mask_name>): Likewise.
	(sse4_1_<code>v2hiv2di2<mask_name>): Likewise.
	(sse4_1_<code>v2siv2di2<mask_name>): Likewise.
	(*sse4_1_<code>v8qiv8hi2<mask_name>_1): New pattern.
	(*sse4_1_<code>v8qiv8hi2<mask_name>_2): Likewise.
	(*avx2_<code>v8qiv8si2<mask_name>_1): Likewise.
	(*avx2_<code>v8qiv8si2<mask_name>_2): Likewise.
	(*sse4_1_<code>v4qiv4si2<mask_name>_1): Likewise.
	(*sse4_1_<code>v4qiv4si2<mask_name>_2): Likewise.
	(*sse4_1_<code>v4hiv4si2<mask_name>_1): Likewise.
	(*sse4_1_<code>v4hiv4si2<mask_name>_2): Likewise.
	(*avx512f_<code>v8qiv8di2<mask_name>_1): Likewise.
	(*avx512f_<code>v8qiv8di2<mask_name>_2): Likewise.
	(*avx2_<code>v4qiv4di2<mask_name>_1): Likewise.
	(*avx2_<code>v4qiv4di2<mask_name>_2): Likewise.
	(*avx2_<code>v4hiv4di2<mask_name>_1): Likewise.
	(*avx2_<code>v4hiv4di2<mask_name>_2): Likewise.
	(*sse4_1_<code>v2hiv2di2<mask_name>_1): Likewise.
	(*sse4_1_<code>v2hiv2di2<mask_name>_2): Likewise.
	(*sse4_1_<code>v2siv2di2<mask_name>_1): Likewise.
	(*sse4_1_<code>v2siv2di2<mask_name>_2): Likewise.

gcc/testsuite/

	PR target/87317
	* gcc.target/i386/pr87317-1.c: New file.
	* gcc.target/i386/pr87317-2.c: Likewise.
	* gcc.target/i386/pr87317-3.c: Likewise.
	* gcc.target/i386/pr87317-4.c: Likewise.
	* gcc.target/i386/pr87317-5.c: Likewise.
	* gcc.target/i386/pr87317-6.c: Likewise.
	* gcc.target/i386/pr87317-7.c: Likewise.
	* gcc.target/i386/pr87317-8.c: Likewise.
	* gcc.target/i386/pr87317-9.c: Likewise.
	* gcc.target/i386/pr87317-10.c: Likewise.
	* gcc.target/i386/pr87317-11.c: Likewise.
	* gcc.target/i386/pr87317-12.c: Likewise.
	* gcc.target/i386/pr87317-13.c: Likewise.

From-SVN: r266342

	* read-rtl.c (apply_subst_iterator): Handle define_split and
	define_insn_and_split.

From-SVN: r266341

	PR rtl-optimization/87817
	* config/i386/i386.md (bmi2_bzhi_<mode>3, *bmi2_bzhi_<mode>3,
	*bmi2_bzhi_<mode>3_1, *bmi2_bzhi_<mode>3_1_ccz): Use IF_THEN_ELSE
	in the pattern to avoid triggering UB when operands[2] is zero.
	(tbm_bextri_<mode>): New expander.  Renamed the old define_insn to ...
	(*tbm_bextri_<mode>): ... this.

From-SVN: r266340

Factor out new function read_string in dwarf.c.

Bootstrapped and reg-tested on x86_64.

2018-11-21  Tom de Vries  <tdevries@suse.de>

	* dwarf.c (read_string): Factor out of ...
	(read_attribute, read_line_header, read_line_program): ... here.

From-SVN: r266339

Ensure that gcc --help=params lines end with a period by:
- fixing the help message of param HOT_BB_COUNT_FRACTION, and
- adding a test-case.

Build and tested on x86_64.

2018-11-21  Tom de Vries  <tdevries@suse.de>

	PR driver/79855
	* params.def (HOT_BB_COUNT_FRACTION): Terminate help message with
	period.

	* lib/options.exp (check_for_options_with_filter): New proc.
	* gcc.misc-tests/help.exp: Check that --help=params lines end with
	period.

From-SVN: r266338

	* lang.opt (fdec-include): New option.
	* options.c (set_dec_flags): Set also flag_dec_include.
	* scanner.c (include_line): Change return type from bool to int.
	In fixed form allow spaces in between include keyword letters.
	For -fdec-include, allow in fixed form 0 in column 6.  With
	-fdec-include return -1 if the parsed line is not full include
	statement and it could be successfully completed on continuation
	lines.
	(include_stmt): New function.
	(load_file): Adjust include_line caller.  If it returns -1, keep
	trying include_stmt until it stops returning -1 whenever adding
	further line of input.

	* gfortran.dg/include_10.f: New test.
	* gfortran.dg/include_10.inc: New file.
	* gfortran.dg/include_11.f: New test.
	* gfortran.dg/include_12.f: New test.
	* gfortran.dg/include_13.f90: New test.
	* gfortran.dg/gomp/include_1.f: New test.
	* gfortran.dg/gomp/include_1.inc: New file.
	* gfortran.dg/gomp/include_2.f90: New test.

Co-Authored-By: Mark Eggleston <mark.eggleston@codethink.com>

From-SVN: r266337

The IBM z14 POP adds an optional alignment operand to the vl, vst,
vlm, and vstm instruction (vector loads and stores). Vectors residing
on 8 or 16 byte boundaries might get loaded or stored faster on some
models given the instruction uses the proper hint operand.  A wrong
hint will hurt performance though.

The attached testcase align-1 currently fails due to:
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88085

gcc/ChangeLog:

2018-11-21  Andreas Krebbel  <krebbel@linux.ibm.com>

	* configure.ac: Add check for Binutils to determine whether vector
	load/store alignments hints are being supported.
	* config.in: Regenerate.
	* configure: Regenerate.
	* config/s390/s390.c (print_operand): Support new output
	modifier A.
	* config/s390/s390.md ("movti"): Append alignment hint output
	using the new output modifier 'A'.
	* config/s390/vector.md ("mov<mode>", "*vec_tf_to_v1tf")
	("*vec_ti_to_v1ti"): Likewise.

gcc/testsuite/ChangeLog:

2018-11-21  Andreas Krebbel  <krebbel@linux.ibm.com>

	* gcc.target/s390/vector/align-1.c: New test.
	* gcc.target/s390/vector/align-2.c: New test.

From-SVN: r266336

gcc/c/ChangeLog:

	* c-parser.c (c_parser_has_attribute_expression): New function.
	(c_parser_attribute): New function.
	(c_parser_attributes): Move code into c_parser_attribute.
	(c_parser_unary_expression): Handle RID_HAS_ATTRIBUTE_EXPRESSION.

gcc/c-family/ChangeLog:

	* c-attribs.c (type_for_vector_size): New function.
	(type_valid_for_vector_size): Same.
	(handle_vector_size_attribute): Move code to the functions above
	and call them.
	(validate_attribute, has_attribute): New functions.
	* c-common.h (has_attribute): Declare.
	(rid): Add RID_HAS_ATTRIBUTE_EXPRESSION.
	* c-common.c (c_common_resword): Same.

gcc/cp/ChangeLog:

	* cp-tree.h (cp_check_const_attributes): Declare.
	* decl2.c (cp_check_const_attributes): Declare extern.
	* parser.c (cp_parser_has_attribute_expression): New function.
	(cp_parser_unary_expression): Handle RID_HAS_ATTRIBUTE_EXPRESSION.
	(cp_parser_gnu_attribute_list): Add argument.

gcc/ChangeLog:

	* doc/extend.texi (Other Builtins): Add __builtin_has_attribute.

gcc/testsuite/ChangeLog:

	* c-c++-common/builtin-has-attribute-2.c: New test.
	* c-c++-common/builtin-has-attribute-3.c: New test.
	* c-c++-common/builtin-has-attribute-4.c: New test.
	* c-c++-common/builtin-has-attribute.c: New test.
	* gcc.dg/builtin-has-attribute.c: New test.
	* gcc/testsuite/gcc.target/i386/builtin-has-attribute.c: New test.

From-SVN: r266335

	PR lto/84044
	* ipa-devirt.c (odr_types_equivalent_p): Use operand_equal_p to
	compare ENUM values.
	* g++.dg/lto/odr-4_0.C: New testcase.
	* g++.dg/lto/odr-4_1.C: New testcase.

From-SVN: r266334

re PR go/88060 (../../../gcc-8.2.0/libgo/go/syscall/libcall_linux_utimesnano.go:17:18: error: reference to undefined name ‘_AT_FDCWD’)

	PR go/88060
    syscall: always define _AT_FDCWD and IPv6MTUInfo
    
    They aren't defined by old versions of glibc, but are required by the
    code in syscall_linux.go.
    
    Reviewed-on: https://go-review.googlesource.com/c/150697

From-SVN: r266333

From-SVN: r266332