Fix up the testing package to insure that execution traces
    work properly (e.g. "-test.trace=<XXX>" command line option). The
    call to stop tracing and emit the output file was stubbed out.
    
    Reviewed-on: https://go-review.googlesource.com/128275

From-SVN: r263363

The "@" handling broke -mlow-precision-div, because the scalar forms of
the instruction were provided by a pattern that also provided FRECPX
(and so were parameterised on an unspec code as well as a mode),
while the SIMD versions had a dedicated FRECPE pattern.  This patch
moves the scalar FRECPE handling to the SIMD pattern too (as for FRECPS)
and uses a separate pattern for FRECPX.

The convention in aarch64-simd-builtins.def seemed to be to add
comments only if the mapping wasn't obvious (i.e. not just sticking
"aarch64_" on the beginning and "<mode>" on the end), so the patch
deletes the reference to the combined pattern instead of rewording it.

There didn't seem to be any coverage of -mlow-precision-div in the
testsuite, so the patch adds some tests for it.

2018-08-07  Richard Sandiford  <richard.sandiford@arm.com>

gcc/
	PR target/86838
	* config/aarch64/iterators.md (FRECP, frecp_suffix): Delete.
	* config/aarch64/aarch64-simd.md
	(aarch64_frecp<FRECP:frecp_suffix><mode>): Fold FRECPE into...
	(@aarch64_frecpe<mode>): ...here and the move FRECPX to...
	(aarch64_frecpx<mode>): ...this new pattern.
	* config/aarch64/aarch64-simd-builtins.def: Remove comment
	about aarch64_frecp<FRECP:frecp_suffix><mode>.

gcc/testsuite/
	PR target/86838
	* gcc.target/aarch64/frecpe_1.c: New test.
	* gcc.target/aarch64/frecpe_2.c: Likewise.

From-SVN: r263362

/cp
2018-08-07  Paolo Carlini  <paolo.carlini@oracle.com>

	PR c++/59480, DR 136
	* decl.c (check_no_redeclaration_friend_default_args): New.
	(duplicate_decls): Use the latter; also check that a friend
	declaration specifying default arguments is a definition.

/testsuite
2018-08-07  Paolo Carlini  <paolo.carlini@oracle.com>

	PR c++/59480, DR 136
	* g++.dg/other/friend8.C: New.
	* g++.dg/other/friend9.C: Likewise.
	* g++.dg/other/friend10.C: Likewise.
	* g++.dg/other/friend11.C: Likewise.
	* g++.dg/other/friend12.C: Likewise.
	* g++.dg/other/friend13.C: Likewise.
	* g++.dg/other/friend14.C: Likewise.
	* g++.dg/other/friend15.C: Likewise.
	* g++.dg/parse/defarg4.C: Compile with -fpermissive -w.
	* g++.dg/parse/defarg8.C: Likewise.

From-SVN: r263361

Solaris memalign requires alignment to be at least sizeof(int), so
increase it as needed.

Also move the check for valid alignments from the fallback
implementation of aligned_alloc into operator new, as it's required for
all of aligned_alloc, memalign, posix_memalign and __aligned_malloc.
This adds a branch to check for undefined behaviour which we could just
ignore, so the check could just be removed. It should certainly be
removed if PR 86878 is implemented to issue a warning about calls with
invalid alignments.

	PR libstdc++/86861
	* libsupc++/new_opa.cc [_GLIBCXX_HAVE_MEMALIGN] (aligned_alloc):
	Replace macro with inline function.
	[__sun]: Increase alignment to meet memalign precondition.
	[!HAVE__ALIGNED_MALLOC && !HAVE_POSIX_MEMALIGN && !HAVE_MEMALIGN]
	(aligned_alloc): Move check for valid alignment to operator new.
	Remove redundant check for non-zero size, it's enforced by the caller.
	(operator new): Move check for valid alignment here. Use
	__builtin_expect on check for zero size.

From-SVN: r263360

This just fixes the PR number in the ChangeLog.  Nothing we can do
about the SVN history.

From-SVN: r263358

PR c++/79133

gcc/cp/

PR c++/79133
* name-lookup.c (check_local_shadow): Reject captures and parameters
with the same name.

testsuite/

PR c++/79133
* g++.dg/cpp0x/lambda/lambda-shadow3.C: New.
* g++.dg/cpp1y/lambda-generic-variadic18.C: Likewise.

From-SVN: r263357

2018-08-07  Martin Liska  <mliska@suse.cz>

        PR middle-end/83023
	* predict.c (expr_expected_value_1): Handle DECL_IS_MALLOC,
        BUILT_IN_REALLOC and DECL_IS_OPERATOR_NEW.
	* predict.def (PRED_MALLOC_NONNULL): New predictor.
	* doc/extend.texi: Document that malloc attribute adds
        hit to compiler.
2018-08-07  Martin Liska  <mliska@suse.cz>

        PR middle-end/83023
	* gcc.dg/predict-16.c: New test.
	* g++.dg/predict-1.C: New test.

From-SVN: r263355

Move the allocation logic into libstdc++.so so that it can be changed
without worrying about inlined code in existing binaries.

Leave do_allocate inline so that calls to it can be devirtualized, and
only the slow path needs to call into the library.

	* config/abi/pre/gnu.ver: Export monotonic_buffer_resource members.
	* include/std/memory_resource (monotonic_buffer_resource::release):
	Call _M_release_buffers to free buffers.
	(monotonic_buffer_resource::do_allocate): Call _M_new_buffer to
	allocate a new buffer from upstream.
	(monotonic_buffer_resource::_M_new_buffer): Declare.
	(monotonic_buffer_resource::_M_release_buffers): Declare.
	(monotonic_buffer_resource::_Chunk): Replace definition with
	declaration as opaque type.
	* src/c++17/memory_resource.cc (monotonic_buffer_resource::_Chunk):
	Define.
	(monotonic_buffer_resource::_M_new_buffer): Define.
	(monotonic_buffer_resource::_M_release_buffers): Define.

From-SVN: r263354

2018-08-07  Steve Ellcey  <sellcey@cavium.com>
	    Rainer Orth  <ro@CeBiTec.Uni-Bielefeld.DE>

	PR tree-optimization/80925
	* gcc.dg/vect/no-section-anchors-vect-69.c: Expect 3 loops
	vectorized on !vect_hw_misalign targets.

Co-Authored-By: Rainer Orth <ro@CeBiTec.Uni-Bielefeld.DE>

From-SVN: r263352

From-SVN: r263351

From-SVN: r263350

This patch adds handling of functions that may not be present in the cuda
driver.

Such a function can be declared using CUDA_ONE_CALL_MAYBE_NULL in cuda-lib.def,
it can be called with the usual convenience macros, but before calling its
presence needs to be tested using new macro CUDA_CALL_EXISTS.

When using the dlopen interface (PLUGIN_NVPTX_DYNAMIC == 1), we allow
non-present functions by allowing dlsym to return NULL.  Otherwise
(PLUGIN_NVPTX_DYNAMIC == 0) we declare the non-present function to be weak.

Build and reg-tested libgomp on x86_64 with nvidia accelerator, with and without
--disable-cuda-driver, in combination with a trigger patch that adds a
non-existing function foo to cuda-lib.def:
...
CUDA_ONE_CALL_MAYBE_NULL (foo)
...
and declares it in plugin-nvptx.c:
...
CUresult foo (void);
...
and then uses it in nvptx_init after the init_cuda_lib call:
...
  if (CUDA_CALL_EXISTS (foo))
    CUDA_CALL (foo);
...

Also build and reg-tested on x86_64 with nvidia accelerator, with and without
--disable-cuda-driver, in combination with a trigger patch that replaces all
CUDA_ONE_CALLs in cuda-lib.def with CUDA_ONE_CALL_MAYBE_NULL, and guards two
CUDA_CALLs with CUDA_CALL_EXISTS, one for a regular fn, and one for a fn that is
a define in cuda/cuda.h.

2018-08-07  Tom de Vries  <tdevries@suse.de>

	* plugin/plugin-nvptx.c (DO_PRAGMA): Define.
	(struct cuda_lib_s): Add def/undef of CUDA_ONE_CALL_MAYBE_NULL.
	(init_cuda_lib): Add new param to CUDA_ONE_CALL_1.  Add arg to
	corresponding call in CUDA_ONE_CALL.  Add def/undef of
	CUDA_ONE_CALL_MAYBE_NULL.
	(CUDA_CALL_EXISTS): Define.

From-SVN: r263346

This patch makes sure that the lifetimes of the CUDA_ONE_CALL macro (which is
defined twice in plugin-nvptx.c) are minimized, to make it obvious that the
definitions are used only in the lib-cuda.def include.

Build on x86_64 with nvptx accelerator and reg-tested libgomp.

2018-08-07  Tom de Vries  <tdevries@suse.de>

	* plugin/plugin-nvptx.c (struct cuda_lib_s, init_cuda_lib): Put
	CUDA_ONE_CALL defines right before the cuda-lib.def include, and the
	corresponding undefs right after.

From-SVN: r263345

	PR target/86807
	* config/pa/pa.c (TARGET_HAVE_SPECULATION_SAFE_VALUE):
	Define to speculation_safe_value_not_needed.

From-SVN: r263344

tree-ssa-dom.c (dom_opt_dom_walker::optimize_stmt): Pass down the vr_values instance to cprop_into_stmt.

	* tree-ssa-dom.c (dom_opt_dom_walker::optimize_stmt): Pass down
	the vr_values instance to cprop_into_stmt.
	(cprop_into_stmt): Pass vr_values instance down to cprop_operand.
	(cprop_operand): Also query EVRP to determine if OP is a constant.

From-SVN: r263342

https://gcc.gnu.org/ml/gcc-patches/2018-08/msg00416.html
	* diagnostic.c (diagnostic_report_current_module): Reroll
	included-at loop.  Translate text.

From-SVN: r263341

	PR c++/86767
	* constexpr.c (cxx_eval_statement_list): Handle continue.

	* g++.dg/cpp1y/constexpr-86767.C: New test.

From-SVN: r263340

"make selftest-valgrind" shows:

187 bytes in 1 blocks are definitely lost in loss record 567 of 669
    at 0x4A081D4: calloc (in /usr/lib64/valgrind/vgpreload_memcheck-amd64-linux.so)
    by 0x1F08260: xcalloc (xmalloc.c:162)
    by 0xB24F32: init_emit() (emit-rtl.c:5843)
    by 0xC10080: prepare_function_start() (function.c:4803)
    by 0xC10254: init_function_start(tree_node*) (function.c:4877)
    by 0x1CDF92A: selftest::test_expansion_to_rtl() (function-tests.c:595)
    by 0x1CE007C: selftest::function_tests_c_tests() (function-tests.c:676)
    by 0x1E010E7: selftest::run_tests() (selftest-run-tests.c:98)
    by 0x1062D1E: toplev::run_self_tests() (toplev.c:2225)
    by 0x1062F40: toplev::main(int, char**) (toplev.c:2303)
    by 0x1E5B90A: main (main.c:39)

The allocation in question is:

  crtl->emit.regno_pointer_align
    = XCNEWVEC (unsigned char, crtl->emit.regno_pointer_align_length);

This patch fixes this leak (and makes the output of
"make selftest-valgrind" clean) by calling free_after_compilation at the
end of the selftest in question.

gcc/ChangeLog:
	* function-tests.c (selftest::test_expansion_to_rtl): Call
	free_after_compilation.

From-SVN: r263339

	* g++.dg/torture/pr86763.C (dg-additional-options): Add -lrt
	for target *-*-linux-gnu.

From-SVN: r263338

gcc/
	* config/aarch64/aarch64.md: Add clobber highs to tls_desc.

gcc/testsuite/
	* gcc.target/aarch64/sve/tls_preserve_1.c: New test.
	* gcc.target/aarch64/sve/tls_preserve_2.c: New test.
	* gcc.target/aarch64/sve/tls_preserve_3.c: New test.

From-SVN: r263337

gcc/ChangeLog:

2018-08-06  Andreas Krebbel  <krebbel@linux.ibm.com>

	* config/s390/s390.c (s390_loop_unroll_adjust): Prevent small
	loops with memory block operations from getting unrolled.

gcc/testsuite/ChangeLog:

2018-08-06  Andreas Krebbel  <krebbel@linux.ibm.com>

	* gcc.target/s390/nomemloopunroll-1.c: New test.

From-SVN: r263336

The SPU processor is not affected by speculation, so this macro can
safely be defined as speculation_safe_value_not_needed.

gcc/ChangeLog:

	PR target/86807
	* config/spu/spu.c (TARGET_HAVE_SPECULATION_SAFE_VALUE):
	Define to speculation_safe_value_not_needed.

From-SVN: r263335

	* reload1.c (forget_old_reloads_1): Adjust CLOBBER_HIGH
	assert.

From-SVN: r263333

PR target/86662

        * gcc/tree.c (build_common_tree_nodes): Initialize integer_types array
        with all enabled __intN types.

        * gcc/testsuite/gcc.target/msp430/pr86662.c: New test.

From-SVN: r263332

gcc/
	* alias.c (record_set): Check for clobber high.
	* cfgexpand.c (expand_gimple_stmt): Likewise.
	* combine-stack-adj.c (single_set_for_csa): Likewise.
	* combine.c (find_single_use_1): Likewise.
	(set_nonzero_bits_and_sign_copies): Likewise.
	(get_combine_src_dest): Likewise.
	(is_parallel_of_n_reg_sets): Likewise.
	(try_combine): Likewise.
	(record_dead_and_set_regs_1): Likewise.
	(reg_dead_at_p_1): Likewise.
	(reg_dead_at_p): Likewise.
	* dce.c (deletable_insn_p): Likewise.
	(mark_nonreg_stores_1): Likewise.
	(mark_nonreg_stores_2): Likewise.
	* df-scan.c (df_find_hard_reg_defs): Likewise.
	(df_uses_record): Likewise.
	(df_get_call_refs): Likewise.
	* dwarf2out.c (mem_loc_descriptor): Likewise.
	* haifa-sched.c (haifa_classify_rtx): Likewise.
	* ira-build.c (create_insn_allocnos): Likewise.
	* ira-costs.c (scan_one_insn): Likewise.
	* ira.c (equiv_init_movable_p): Likewise.
	(rtx_moveable_p): Likewise.
	(interesting_dest_for_shprep): Likewise.
	* jump.c (mark_jump_label_1): Likewise.
	* postreload-gcse.c (record_opr_changes): Likewise.
	* postreload.c (reload_cse_simplify): Likewise.
	(struct reg_use): Add source expr.
	(reload_combine): Check for clobber high.
	(reload_combine_note_use): Likewise.
	(reload_cse_move2add): Likewise.
	(move2add_note_store): Likewise.
	* print-rtl.c (print_pattern): Likewise.
	* recog.c (decode_asm_operands): Likewise.
	(store_data_bypass_p): Likewise.
	(if_test_bypass_p): Likewise.
	* regcprop.c (kill_clobbered_value): Likewise.
	(kill_set_value): Likewise.
	* reginfo.c (reg_scan_mark_refs): Likewise.
	* reload1.c (maybe_fix_stack_asms): Likewise.
	(eliminate_regs_1): Likewise.
	(elimination_effects): Likewise.
	(mark_not_eliminable): Likewise.
	(scan_paradoxical_subregs): Likewise.
	(forget_old_reloads_1): Likewise.
	* reorg.c (find_end_label): Likewise.
	(try_merge_delay_insns): Likewise.
	(redundant_insn): Likewise.
	(own_thread_p): Likewise.
	(fill_simple_delay_slots): Likewise.
	(fill_slots_from_thread): Likewise.
	(dbr_schedule): Likewise.
	* resource.c (update_live_status): Likewise.
	(mark_referenced_resources): Likewise.
	(mark_set_resources): Likewise.
	* rtl.c (copy_rtx): Likewise.
	* rtlanal.c (reg_referenced_p): Likewise.
	(single_set_2): Likewise.
	(noop_move_p): Likewise.
	(note_stores): Likewise.
	* sched-deps.c (sched_analyze_reg): Likewise.
	(sched_analyze_insn): Likewise.

From-SVN: r263331

gcc/
	* cse.c (invalidate_reg): New function extracted from...
	(invalidate): ...here.
	(canonicalize_insn): Check for clobber high.
	(invalidate_from_clobbers): invalidate clobber highs.
	(invalidate_from_sets_and_clobbers): Likewise.
	(count_reg_usage): Check for clobber high.
	(insn_live_p): Likewise.
	* cselib.c (cselib_expand_value_rtx_1):Likewise.
	(cselib_invalidate_regno): Check for clobber in setter.
	(cselib_invalidate_rtx): Pass through setter.
	(cselib_invalidate_rtx_note_stores):
	(cselib_process_insn): Check for clobber high.
	* cselib.h (cselib_invalidate_rtx): Add operand.

From-SVN: r263330

gcc/
	* lra-eliminations.c (lra_eliminate_regs_1): Check for clobber high.
	(mark_not_eliminable): Likewise.
	* lra-int.h (struct lra_insn_reg): Add clobber high marker.
	* lra-lives.c (process_bb_lives): Check for clobber high.
	* lra.c (new_insn_reg): Remember clobber highs.
	(collect_non_operand_hard_regs): Check for clobber high.
	(lra_set_insn_recog_data): Likewise.
	(add_regs_to_insn_regno_info): Likewise.
	(lra_update_insn_regno_info): Likewise.

From-SVN: r263329

gcc/
	* rtl.h (reg_is_clobbered_by_clobber_high): Add declarations.
	* rtlanal.c (reg_is_clobbered_by_clobber_high): Add function.

From-SVN: r263328

Ensure clobber high is a register expression.
Info is passed through for the error case.

gcc/
	* emit-rtl.c (verify_rtx_sharing): Check for CLOBBER_HIGH.
	(copy_insn_1): Likewise.
	(gen_hard_reg_clobber_high): New gen function.
	* genconfig.c (walk_insn_part): Check for CLOBBER_HIGH.
	* genemit.c (gen_exp): Likewise.
	(gen_emit_seq): Pass through info.
	(gen_insn): Check for CLOBBER_HIGH.
	(gen_expand): Pass through info.
	(gen_split): Likewise.
	(output_add_clobbers): Likewise.
	* genrecog.c (validate_pattern): Check for CLOBBER_HIGH.
	(remove_clobbers): Likewise.
	* rtl.h (gen_hard_reg_clobber_high): New declaration.

From-SVN: r263327

Includes documentation.

2018-08-06  Alan Hayward  <alan.hayward@arm.com>

	* doc/rtl.texi (clobber_high): Add.
	(parallel): Add in clobber high
	* rtl.c (rtl_check_failed_code3): Add function.
	* rtl.def (CLOBBER_HIGH): Add expression.
	* rtl.h (RTL_CHECKC3): Add macro.
	(rtl_check_failed_code3): Add declaration.
	(XC3EXP): Add macro.

From-SVN: r263326

	* MAINTAINERS: Update my email address.

From-SVN: r263325

From-SVN: r263324

Zlib is not a dependency of libbacktrace, and so it shouldn't be added
to LIBS.

libbacktrace/

	* configure.ac: Move define of HAVE_ZLIB into check for -lz.
	* Makefile.in: Regenerate.
	* config.h.in: Likewise.
	* configure: Likewise.

From-SVN: r263320

2018-08-05  François Dumont  <fdumont@gcc.gnu.org>

	* include/bits/stl_iterator.h: Fix comment.

From-SVN: r263318

cfun->machine->max_used_stack_alignment is used to decide how stack frame
should be aligned.  This is independent of any psABIs nor 32-bit vs 64-bit.
It is always safe to compute max_used_stack_alignment.  We compute it only
if 128-bit aligned load/store may be generated on misaligned stack slot
which will lead to segfault.

gcc/

	PR target/86386
	* config/i386/i386.c (ix86_finalize_stack_frame_flags): Set
	cfun->machine->max_used_stack_alignment if needed.

gcc/testsuite/

	PR target/86386
	* gcc.target/i386/pr86386.c: New file.

From-SVN: r263317

From-SVN: r263316

gcc/ChangeLog:

	PR tree-optimization/86571
	* gimple-ssa-sprintf.c (format_floating): Extend upper bound of
	NaN output to 4.

From-SVN: r263312

2018-08-04  Tom de Vries  <tdevries@suse.de>

	* lib/gcc-gdb-test.exp: Use absolute line number in pass/fail line.

From-SVN: r263311

Using libgomp configure option --with-cuda-driver=<dir> we can indicate what
cuda driver to use to build the libgomp nvptx plugin.  Without such an option,
the system cuda driver is used, if available.  If not availabe, a dlopen
interface is used instead.

However, when we use --without-cuda-driver (or the equivalent
--with-cuda-driver=no) the system cuda driver is still used if available.

This patch fixes that, making sure that --without-cuda-driver selects the dlopen
interface.

Build on x86_64 with nvptx accelerator and tested libgomp testsuite, with and
without option --without-cuda-driver.

2018-08-04  Tom de Vries  <tdevries@suse.de>

	* plugin/configfrag.ac: For --without-cuda-driver, set
	CUDA_DRIVER_INCLUDE and CUDA_DRIVER_LIB to no.  Handle
	CUDA_DRIVER_INCLUDE == no and CUDA_DRIVER_LIB == no.
	* configure: Regenerate.

From-SVN: r263310

* gcc.dg/guality/const-volatile.c: Remove duplicate test
"type:cvip".

From-SVN: r263309