/cp
2019-01-17  Paolo Carlini  <paolo.carlini@oracle.com>

	* decl.c (grokdeclarator): Use typespec_loc in error messages
	about 'auto' and trailing return type.

/testsuite
2019-01-17  Paolo Carlini  <paolo.carlini@oracle.com>

	* g++.dg/cpp0x/auto52.C: Test locations too.
	* g++.dg/cpp0x/trailing2.C: Likewise.
	* g++.dg/cpp1y/auto-fn18.C: Likewise.
	* g++.dg/cpp1y/auto-fn25.C: Likewise.
	* g++.dg/cpp1y/auto-fn52.C: Likewise.
	* g++.dg/cpp1y/auto-fn53.C: Likewise.
	* g++.dg/cpp1y/auto-fn54.C: Likewise.

From-SVN: r268043

PR c++/88699 reports an ICE within this assertion in add_method:

  gcc_assert (!current_fns || !DECL_DESTRUCTOR_P (method));

when adding an overloaded operator to a class via a using_decl, due to
DECL_DESTRUCTOR_P requiring a FUNCTION_DECL, but "method" being a
USING_DECL.

This patch weakens the assertion to avoid testing DECL_DESTRUCTOR_P
for the case where "via_using" is true, fixing the ICE.

gcc/cp/ChangeLog:
	PR c++/88699
	* class.c (add_method): Don't use DECL_DESTRUCTOR_P on
	USING_DECLs.

gcc/testsuite/ChangeLog:
	PR c++/88699
	* g++.dg/template/pr88699.C: New test.

From-SVN: r268041

gcc/ChangeLog:

	PR tree-optimization/88800
	* gimple-fold.c (gimple_fold_builtin_memory_op): Avoid checking
	NO_WARNING bit here.  Avoid folding out-of-bounds calls.
	* gimple-ssa-warn-restrict.c (maybe_diag_offset_bounds): Remove
	redundant argument.  Add new argument and issue diagnostics under
	its control.  Detect out-of-bounds access even with warnings
	disabled.
	(check_bounds_or_overlap): Change return type.  Add argument.
	(wrestrict_dom_walker::check_call): Adjust.
	* gimple-ssa-warn-restrict.h (check_bounds_or_overlap): Add argument.
	* tree-ssa-strlen.c (handle_builtin_strcpy): Adjust to change in
	check_bounds_or_overlap's return value.
	(handle_builtin_stxncpy): Same.
	(handle_builtin_strcat): Same.

gcc/testsuite/ChangeLog:

	PR tree-optimization/88800
	* c-c++-common/Wrestrict.c: Adjust.
	* gcc.dg/Warray-bounds-37.c: New test.
	* gcc.dg/builtin-memcpy-2.c: New test.
	* gcc.dg/builtin-memcpy.c: New test.

From-SVN: r268037

	* src/c++17/fs_ops.cc
	(equivalent(const path&, const path&, error_code&))
	[_GLIBCXX_FILESYSTEM_IS_WINDOWS]: Use GetFileInformationByHandle to
	compare files instead of relying on incomplete info returned by stat.

From-SVN: r268036

	PR libstdc++/88884
	* src/c++17/fs_ops.cc (absolute(const path&, error_code&)): Do nothing
	if the path is already absolute.
	[_GLIBCXX_FILESYSTEM_IS_WINDOWS]: Normalize root-directory.
	[!_GLIBCXX_FILESYSTEM_IS_WINDOWS]: Pass error_code to current_path.

From-SVN: r268035

On Windows stat("foo/bar/../.") will resolve to "foo" even if that is a
non-directory and "foo/bar" does not exist. This is the expected
behaviour and consistent with boost::filesystem, so don't try to correct
it. The only unwanted behaviour is that stat("baz/") fails due to a
mingw bug (fixed in mingw-w64 v6.0.0) so add a workaround.

	PR libstdc++/88881
	* src/c++17/fs_ops.cc (canonical(const path&, error_code&))
	[_GLIBCXX_FILESYSTEM_IS_WINDOWS]: Normalize path, to match behaviour
	of filesystem::exists.
	(create_directories(const path&, error_code&)): Add assertions.
	(status(const path&, error_code&)) [_GLIBCXX_FILESYSTEM_IS_WINDOWS]:
	Add workaround for bug in _wstat for paths with trailing slash.
	* testsuite/27_io/filesystem/operations/create_directories.cc: Adjust
	for expected behaviour on mingw.
	* testsuite/experimental/filesystem/operations/create_directories.cc:
	Likewise.
	* testsuite/27_io/filesystem/operations/temp_directory_path.cc: Use
	"TMP" instead of "TMPDIR" and clean environment before each test. Do
	not test permissions on mingw targets.

From-SVN: r268034

gcc/testsuite/ChangeLog:

	PR target/88850
	* gcc.target/arm/pr51968.c: Use neon intrinsics.

From-SVN: r268033

Add test-case to verify that libbacktrace can read debug info that was
compressed with dwz.

2019-01-17  Tom de Vries  <tdevries@suse.de>

	PR libbacktrace/82857
	* configure.ac (DWZ): Set with AC_CHECK_PROG.
	(HAVE_DWZ): Set with AM_CONDITIONAL.
	* configure: Regenerate.
	* Makefile.am (TESTS): Add btest_dwz.
	* Makefile.in: Regenerate.

From-SVN: r268032

Handle DW_FORM_GNU_ref_alt which references the .debug_info section in the
.gnu_debugaltlink file.

2019-01-17  Tom de Vries  <tdevries@suse.de>

	PR libbacktrace/82857
	* dwarf.c (enum attr_val_encoding): Add ATTR_VAL_REF_ALT_INFO.
	(read_attribute): Handle DW_FORM_GNU_ref_alt using
	ATTR_VAL_REF_ALT_INFO.
	(read_referenced_name_from_attr): Handle DW_FORM_GNU_ref_alt.

From-SVN: r268031

Add a function that finds the unit given an offset into .debug_info.

2019-01-17  Tom de Vries  <tdevries@suse.de>

	* dwarf.c (struct unit): Add low_offset and high_offset fields.
	(struct unit_vector): New type.
	(struct dwarf_data): Add units and units_counts fields.
	(find_unit): New function.
	(find_address_ranges): Add and handle unit_tag parameter.
	(build_address_map): Add and handle units_vec parameter.
	(build_dwarf_data): Pass units_vec to build_address_map.  Store resulting
	units vector.

From-SVN: r268030

This collection of miscellaneous patches configures the testsuite to run on AMD
GCN in a standalone (i.e. not offloading) configuration.  It assumes you have
your Dejagnu set up to run binaries via the gcn-run tool.

2019-01-17  Andrew Stubbs  <ams@codesourcery.com>
	    Kwok Cheung Yeung  <kcy@codesourcery.com>
	    Julian Brown  <julian@codesourcery.com>
	    Tom de Vries  <tom@codesourcery.com>

	gcc/
	* doc/sourcebuild.texi: Document dg-add-options sqrt_insn.

	gcc/testsuite/
	* gcc.dg/20020312-2.c: Add amdgcn support.
	* gcc.dg/Wno-frame-address.c: Disable on amdgcn.
	* gcc.dg/builtin-apply2.c: Likewise.
	* gcc.dg/torture/stackalign/builtin-apply-2.c: Likewise.
	* gcc.dg/gimplefe-28.c: Add dg-add-options for sqrt_insn.
	* gcc.dg/intermod-1.c: Add -mlocal-symbol-id on amdgcn.
	* gcc.dg/memcmp-1.c: Increase timeout factor.
	* gcc.dg/pr59605-2.c: Addd -DMAX_COPY=1025 on amdgcn.
	* gcc.dg/sibcall-10.c: xfail on amdgcn.
	* gcc.dg/sibcall-9.c: Likewise.
	* gcc.dg/tree-ssa/gen-vect-11c.c: Likewise.
	* gcc.dg/tree-ssa/pr84512.c: Likewise.
	* gcc.dg/tree-ssa/loop-1.c: Adjust expectations for amdgcn.
	* gfortran.dg/bind_c_array_params_2.f90: Likewise.
	* lib/target-supports.exp (check_effective_target_trampolines):
	Configure amdgcn.
	(check_profiling_available): Likewise.
	(check_effective_target_global_constructor): Likewise.
	(check_effective_target_return_address): Likewise.
	(check_effective_target_fopenacc): Likewise.
	(check_effective_target_fopenmp): Likewise.
	(check_effective_target_vect_int): Likewise.
	(check_effective_target_vect_intfloat_cvt): Likewise.
	(check_effective_target_vect_uintfloat_cvt): Likewise.
	(check_effective_target_vect_floatint_cvt): Likewise.
	(check_effective_target_vect_floatuint_cvt): Likewise.
	(check_effective_target_vect_simd_clones): Likewise.
	(check_effective_target_vect_shift): Likewise.
	(check_effective_target_whole_vector_shift): Likewise.
	(check_effective_target_vect_bswap): Likewise.
	(check_effective_target_vect_shift_char): Likewise.
	(check_effective_target_vect_long): Likewise.
	(check_effective_target_vect_float): Likewise.
	(check_effective_target_vect_double): Likewise.
	(check_effective_target_vect_perm): Likewise.
	(check_effective_target_vect_perm_byte): Likewise.
	(check_effective_target_vect_perm_short): Likewise.
	(check_effective_target_vect_widen_mult_qi_to_hi): Likewise.
	(check_effective_target_vect_widen_mult_hi_to_si): Likewise.
	(check_effective_target_vect_widen_mult_qi_to_hi_pattern): Likewise.
	(check_effective_target_vect_widen_mult_hi_to_si_pattern): Likewise.
	(check_effective_target_vect_natural_alignment): Likewise.
	(check_effective_target_vect_fully_masked): Likewise.
	(check_effective_target_vect_element_align): Likewise.
	(check_effective_target_vect_masked_store): Likewise.
	(check_effective_target_vect_scatter_store): Likewise.
	(check_effective_target_vect_condition): Likewise.
	(check_effective_target_vect_cond_mixed): Likewise.
	(check_effective_target_vect_char_mult): Likewise.
	(check_effective_target_vect_short_mult): Likewise.
	(check_effective_target_vect_int_mult): Likewise.
	(check_effective_target_sqrt_insn): Likewise.
	(check_effective_target_vect_call_sqrtf): Likewise.
	(check_effective_target_vect_call_btrunc): Likewise.
	(check_effective_target_vect_call_btruncf): Likewise.
	(check_effective_target_vect_call_ceil): Likewise.
	(check_effective_target_vect_call_floorf): Likewise.
	(check_effective_target_lto): Likewise.
	(check_vect_support_and_set_flags): Likewise.
	(check_effective_target_vect_stridedN): Enable when fully masked is
	available.
	(add_options_for_sqrt_insn): New procedure.


Co-Authored-By: Julian Brown <julian@codesourcery.com>
Co-Authored-By: Kwok Cheung Yeung <kcy@codesourcery.com>
Co-Authored-By: Tom de Vries <tom@codesourcery.com>

From-SVN: r268028

The GCN toolchain must use the LLVM assembler and linker because there's no
binutils port.  The LLVM tools do not have the same diagnostic style as
binutils, so the "blank line(s) in output" tests are inappropriate (and very
noisy).

The LLVM tools also have different command line options, so it's not possible
to autodetect object formats in the same way.

This patch addresses both issues.

2019-01-17  Andrew Stubbs  <ams@codesourcery.com>

	gcc/
	* doc/sourcebuild.texi: Document dg-require-effective-target
	llvm_binutils and offload_gcn.

	gcc/testsuite/
	* lib/file-format.exp (gcc_target_object_format): Handle AMD GCN.
	* lib/gcc-dg.exp (gcc-dg-prune): Ignore blank lines from the LLVM
	linker.
	* lib/target-supports.exp (check_effective_target_llvm_binutils): New.

From-SVN: r268027

The GCN/HSA loader ignores the load address and uses a random location, so we
build all GCN binaries as PIE, by default.

This patch makes the necessary testsuite adjustments to make this work
correctly.

2019-01-17  Andrew Stubbs  <ams@codesourcery.com>

	gcc/testsuite/
	* gcc.dg/graphite/scop-19.c: Check pie_enabled.
	* gcc.dg/pic-1.c: Disable on amdgcn.
	* gcc.dg/pic-2.c: Disable on amdgcn.
	* gcc.dg/pic-3.c: Disable on amdgcn.
	* gcc.dg/pic-4.c: Disable on amdgcn.
	* gcc.dg/pie-3.c: Disable on amdgcn.
	* gcc.dg/pie-4.c: Disable on amdgcn.
	* gcc.dg/uninit-19.c: Check pie_enabled.
	* lib/target-supports.exp (check_effective_target_pie): Add amdgcn.

From-SVN: r268026

There are a number of tests that fail because they assume that exceptions are
available, but GCN does not support them, yet.

This patch adds "dg-require-effective-target exceptions" in all the affected
tests.  There's probably an automatic way to test for exceptions, but the
current implementation simply says that AMD GCN does not support them.  This
should ensure that no other targets are affected by the change.

2019-01-17  Andrew Stubbs  <ams@codesourcery.com>
	    Kwok Cheung Yeung  <kcy@codesourcery.com>
	    Julian Brown  <julian@codesourcery.com>
	    Tom de Vries  <tom@codesourcery.com>

	gcc/
	* doc/sourcebuild.texi: Document dg-required-effective-target
	exceptions.

	gcc/testsuite/
	* c-c++-common/ubsan/pr71512-1.c: Require exceptions.
	* c-c++-common/ubsan/pr71512-2.c: Require exceptions.
	* gcc.c-torture/compile/pr34648.c: Require exceptions.
	* gcc.c-torture/compile/pr41469.c: Require exceptions.
	* gcc.dg/20111216-1.c: Require exceptions.
	* gcc.dg/cleanup-10.c: Require exceptions.
	* gcc.dg/cleanup-11.c: Require exceptions.
	* gcc.dg/cleanup-12.c: Require exceptions.
	* gcc.dg/cleanup-13.c: Require exceptions.
	* gcc.dg/cleanup-5.c: Require exceptions.
	* gcc.dg/cleanup-8.c: Require exceptions.
	* gcc.dg/cleanup-9.c: Require exceptions.
	* gcc.dg/gomp/pr29955.c: Require exceptions.
	* gcc.dg/lto/pr52097_0.c: Require exceptions.
	* gcc.dg/nested-func-5.c: Require exceptions.
	* gcc.dg/pch/except-1.c: Require exceptions.
	* gcc.dg/pch/valid-2.c: Require exceptions.
	* gcc.dg/pr41470.c: Require exceptions.
	* gcc.dg/pr42427.c: Require exceptions.
	* gcc.dg/pr44545.c: Require exceptions.
	* gcc.dg/pr47086.c: Require exceptions.
	* gcc.dg/pr51481.c: Require exceptions.
	* gcc.dg/pr51644.c: Require exceptions.
	* gcc.dg/pr52046.c: Require exceptions.
	* gcc.dg/pr54669.c: Require exceptions.
	* gcc.dg/pr56424.c: Require exceptions.
	* gcc.dg/pr64465.c: Require exceptions.
	* gcc.dg/pr65802.c: Require exceptions.
	* gcc.dg/pr67563.c: Require exceptions.
	* gcc.dg/tree-ssa/pr41469-1.c: Require exceptions.
	* gcc.dg/tree-ssa/ssa-dse-28.c: Require exceptions.
	* gcc.dg/vect/pr46663.c: Require exceptions.
	* lib/target-supports.exp (check_effective_target_exceptions): New.


Co-Authored-By: Julian Brown <julian@codesourcery.com>
Co-Authored-By: Kwok Cheung Yeung <kcy@codesourcery.com>
Co-Authored-By: Tom de Vries <tom@codesourcery.com>

From-SVN: r268025

This patch contains the configuration adjustments needed to enable the GCN
back-end.

The new configure check for dlopen is required to allow building the new
gcn-run tool.  This tool uses libdl to load the HSA runtime libraries, which
are required to run programs on the GPU.  The tool is disabled if libdl is not
available.

2019-01-17  Andrew Stubbs  <ams@codesourcery.com>
	    Kwok Cheung Yeung  <kcy@codesourcery.com>
	    Julian Brown  <julian@codesourcery.com>
	    Tom de Vries  <tom@codesourcery.com>
	    Jan Hubicka  <hubicka@ucw.cz>
	    Martin Jambor  <mjambor@suse.cz>

	* configure.ac: Likewise.
	* configure: Regenerate.
	* contrib/config-list.mk: Add amdgcn-amdhsa.

	gcc/
	* config.gcc: Add amdgcn*-*-amdhsa configuration.
	* configure.ac: Check for dlopen.
	* configure: Regenerate.


Co-Authored-By: Jan Hubicka <hubicka@ucw.cz>
Co-Authored-By: Julian Brown <julian@codesourcery.com>
Co-Authored-By: Kwok Cheung Yeung <kcy@codesourcery.com>
Co-Authored-By: Martin Jambor <mjambor@suse.cz>
Co-Authored-By: Tom de Vries <tom@codesourcery.com>

From-SVN: r268024

This patch contains the major part of the GCN back-end.  The machine
description has been broken out to avoid the mailing list size limit.

The back-end contains various bits that support OpenACC and OpenMP, but the
middle-end and libgomp patches are missing, as is mkoffload.  I include them
here because they're harmless and carving up the files seems like unnecessary
effort.  The remaining offload support will be posted at a later date.

The gcn-run.c is a separate tool that can run a GCN program on a GPU using
the ROCm drivers and HSA runtime libraries.

2019-01-17  Andrew Stubbs  <ams@codesourcery.com>
	    Kwok Cheung Yeung  <kcy@codesourcery.com>
	    Julian Brown  <julian@codesourcery.com>
	    Tom de Vries  <tom@codesourcery.com>
	    Jan Hubicka  <hubicka@ucw.cz>
	    Martin Jambor  <mjambor@suse.cz>

	gcc/
	* common/config/gcn/gcn-common.c: New file.
	* config/gcn/driver-gcn.c: New file.
	* config/gcn/gcn-builtins.def: New file.
	* config/gcn/gcn-hsa.h: New file.
	* config/gcn/gcn-modes.def: New file.
	* config/gcn/gcn-opts.h: New file.
	* config/gcn/gcn-passes.def: New file.
	* config/gcn/gcn-protos.h: New file.
	* config/gcn/gcn-run.c: New file.
	* config/gcn/gcn-tree.c: New file.
	* config/gcn/gcn.c: New file.
	* config/gcn/gcn.h: New file.
	* config/gcn/gcn.opt: New file.
	* config/gcn/t-gcn-hsa: New file.


Co-Authored-By: Jan Hubicka <hubicka@ucw.cz>
Co-Authored-By: Julian Brown <julian@codesourcery.com>
Co-Authored-By: Kwok Cheung Yeung <kcy@codesourcery.com>
Co-Authored-By: Martin Jambor <mjambor@suse.cz>
Co-Authored-By: Tom de Vries <tom@codesourcery.com>

From-SVN: r268023

This patch contains the machine description portion of the GCN back-end.  I've
broken it out mainly to avoid the mailing list size limit.

2019-01-17  Andrew Stubbs  <ams@codesourcery.com>
	    Kwok Cheung Yeung  <kcy@codesourcery.com>
	    Julian Brown  <julian@codesourcery.com>
	    Tom de Vries  <tom@codesourcery.com>
	    Jan Hubicka  <hubicka@ucw.cz>
	    Martin Jambor  <mjambor@suse.cz>

	gcc/
	* config/gcn/constraints.md: New file.
	* config/gcn/gcn-valu.md: New file.
	* config/gcn/gcn.md: New file.
	* config/gcn/predicates.md: New file.


Co-Authored-By: Jan Hubicka <hubicka@ucw.cz>
Co-Authored-By: Julian Brown <julian@codesourcery.com>
Co-Authored-By: Kwok Cheung Yeung <kcy@codesourcery.com>
Co-Authored-By: Martin Jambor <mjambor@suse.cz>
Co-Authored-By: Tom de Vries <tom@codesourcery.com>

From-SVN: r268022

This patch contains the GCN port of libgcc.

2019-01-17  Andrew Stubbs  <ams@codesourcery.com>
	    Kwok Cheung Yeung  <kcy@codesourcery.com>
	    Julian Brown  <julian@codesourcery.com>
	    Tom de Vries  <tom@codesourcery.com>

	libgcc/
	* config.host: Recognize amdgcn*-*-amdhsa.
	* config/gcn/crt0.c: New file.
	* config/gcn/lib2-divmod-hi.c: New file.
	* config/gcn/lib2-divmod.c: New file.
	* config/gcn/lib2-gcn.h: New file.
	* config/gcn/sfp-machine.h: New file.
	* config/gcn/t-amdgcn: New file.


Co-Authored-By: Julian Brown <julian@codesourcery.com>
Co-Authored-By: Kwok Cheung Yeung <kcy@codesourcery.com>
Co-Authored-By: Tom de Vries <tom@codesourcery.com>

From-SVN: r268021

This patch contains the GCN port of libgfortran.  We use the minimal
configuration created for NVPTX.  That's all that's required, besides the
target-independent bug fixes posted already.

2019-01-17  Andrew Stubbs  <ams@codesourcery.com>
	    Kwok Cheung Yeung  <kcy@codesourcery.com>
	    Julian Brown  <julian@codesourcery.com>
	    Tom de Vries  <tom@codesourcery.com>

	libgfortran/
	* configure.ac: Use minimal mode for amdgcn.
	* configure: Regenerate.


Co-Authored-By: Julian Brown <julian@codesourcery.com>
Co-Authored-By: Kwok Cheung Yeung <kcy@codesourcery.com>
Co-Authored-By: Tom de Vries <tom@codesourcery.com>

From-SVN: r268020

gimple-ssa-isolate-paths.c (stmt_uses_name_in_undefined_way): Replace flag_non_call_exceptions with cfun->can_throw_non_call_exceptions.

	* gimple-ssa-isolate-paths.c (stmt_uses_name_in_undefined_way): Replace
	flag_non_call_exceptions with cfun->can_throw_non_call_exceptions.
	(stmt_uses_0_or_null_in_undefined_way): Likewise.
	* tree-ssa-alias.c (same_addr_size_stores_p): Likewise.

From-SVN: r268018

gcc/ChangeLog:

	PR target/88851
	* config/aarch64/aarch64.md (STACK_CLASH_SVE_CFA_REGNUM): New.
	* config/aarch64/aarch64.c (aarch64_allocate_and_probe_stack_space): Use
	it and document registers.

gcc/testsuite/ChangeLog:

	PR target/88851
	* gcc.target/aarch64/stack-check-cfa-3.c: Update test.

From-SVN: r268017

https://gcc.gnu.org/ml/gcc-patches/2019-01/msg00948.html
	PR c++/86610
	* semantics.c (process_outer_var_ref): Only skip dependent types
	in templates.

	PR c++/86610
	* g++.dg/cpp0x/pr86610.C: New.

From-SVN: r268016

This patch adds a tuning struct for the Arm Ares CPU and uses it for -m{cpu,tune}=ares.
The tunings are an initial attempt and may be improved upon in the future, but they serve
as a decent starting point for GCC 9.

With this I see a 1.3% improvement on SPEC2006 int and 0.3% on SPEC2006 fp with -mcpu=ares.
On SPEC2017 I see a 0.6% improvement in intrate and changes in the noise for fprate.

        * config/aarch64/aarch64.c (ares_tunings): Define.
        * config/aarch64/aarch64-cores.def (ares): Use the above.

From-SVN: r268015

gcc/testsuite/ChangeLog
2019-01-17  Wei Xiao  <wei3.xiao@intel.com>

	* gcc.target/i386/avx512f-vfixupimmpd-2.c: Fix the test cases for
	VFIXUPIMM* intrinsics.
	* gcc.target/i386/avx512f-vfixupimmps-2.c: Ditto.
	* gcc.target/i386/avx512f-vfixupimmsd-2.c: Ditto.
	* gcc.target/i386/avx512f-vfixupimmss-2.c: Ditto.

From-SVN: r268014

gcc/ChangeLog
2019-01-17  Wei Xiao  <wei3.xiao@intel.com>

	PR target/88794
	Revert:

	2018-11-06  Wei Xiao  <wei3.xiao@intel.com>

	* config/i386/avx512fintrin.h: Update VFIXUPIMM* intrinsics.
	(_mm512_fixupimm_round_pd): Update parameters and builtin.
	(_mm512_maskz_fixupimm_round_pd): Ditto.
	(_mm512_fixupimm_round_ps): Ditto.
	(_mm512_maskz_fixupimm_round_ps): Ditto.
	(_mm_fixupimm_round_sd): Ditto.
	(_mm_maskz_fixupimm_round_sd): Ditto.
	(_mm_fixupimm_round_ss): Ditto.
	(_mm_maskz_fixupimm_round_ss): Ditto.
	(_mm512_fixupimm_pd): Ditto.
	(_mm512_maskz_fixupimm_pd): Ditto.
	(_mm512_fixupimm_ps): Ditto.
	(_mm512_maskz_fixupimm_ps): Ditto.
	(_mm_fixupimm_sd): Ditto.
	(_mm_maskz_fixupimm_sd): Ditto.
	(_mm_fixupimm_ss): Ditto.
	(_mm_maskz_fixupimm_ss): Ditto.
	(_mm512_mask_fixupimm_round_pd): Update builtin.
	(_mm512_mask_fixupimm_round_ps): Ditto.
	(_mm_mask_fixupimm_round_sd): Ditto.
	(_mm_mask_fixupimm_round_ss): Ditto.
	(_mm512_mask_fixupimm_pd): Ditto.
	(_mm512_mask_fixupimm_ps): Ditto.
	(_mm_mask_fixupimm_sd): Ditto.
	(_mm_mask_fixupimm_ss): Ditto.
	* config/i386/avx512vlintrin.h:
	(_mm256_fixupimm_pd): Update parameters and builtin.
	(_mm256_maskz_fixupimm_pd): Ditto.
	(_mm256_fixupimm_ps): Ditto.
	(_mm256_maskz_fixupimm_ps): Ditto.
	(_mm_fixupimm_pd): Ditto.
	(_mm_maskz_fixupimm_pd): Ditto.
	(_mm_fixupimm_ps): Ditto.
	(_mm_maskz_fixupimm_ps): Ditto.
	(_mm256_mask_fixupimm_pd): Update builtin.
	(_mm256_mask_fixupimm_ps): Ditto.
	(_mm_mask_fixupimm_pd): Ditto.
	(_mm_mask_fixupimm_ps): Ditto.
	* config/i386/i386-builtin-types.def: Add new types and remove useless ones.
	* config/i386/i386-builtin.def: Update builtin definitions.
	* config/i386/i386.c: Handle new builtin types and remove useless ones.
	* config/i386/sse.md: Update VFIXUPIMM* patterns.
	(<avx512>_fixupimm<mode>_maskz<round_saeonly_expand_name>): Update.
	(<avx512>_fixupimm<mode><sd_maskz_name><round_saeonly_name>): Update.
	(<avx512>_fixupimm<mode>_mask<round_saeonly_name>): Update.
	(avx512f_sfixupimm<mode>_maskz<round_saeonly_expand_name>): Update.
	(avx512f_sfixupimm<mode><sd_maskz_name><round_saeonly_name>): Update.
	(avx512f_sfixupimm<mode>_mask<round_saeonly_name>): Update.
	* config/i386/subst.md:
	(round_saeonly_sd_mask_operand4): Add new subst_attr.
	(round_saeonly_sd_mask_op4): Ditto.
	(round_saeonly_expand_operand5): Ditto.
	(round_saeonly_expand): Update.

gcc/testsuite/ChangeLog
2019-01-17  Wei Xiao  <wei3.xiao@intel.com>

	PR target/88794
	Revert:
	2018-11-06  Wei Xiao  <wei3.xiao@intel.com>

	* gcc.target/i386/avx-1.c: Update tests for VFIXUPIMM* intrinsics.
	* gcc.target/i386/avx512f-vfixupimmpd-1.c: Ditto.
	* gcc.target/i386/avx512f-vfixupimmpd-2.c: Ditto.
	* gcc.target/i386/avx512f-vfixupimmps-1.c: Ditto.
	* gcc.target/i386/avx512f-vfixupimmsd-1.c: Ditto.
	* gcc.target/i386/avx512f-vfixupimmsd-2.c: Ditto.
	* gcc.target/i386/avx512f-vfixupimmss-1.c: Ditto.
	* gcc.target/i386/avx512f-vfixupimmss-2.c: Ditto.
	* gcc.target/i386/avx512vl-vfixupimmpd-1.c: Ditto.
	* gcc.target/i386/avx512vl-vfixupimmps-1.c: Ditto.
	* gcc.target/i386/sse-13.c: Ditto.
	* gcc.target/i386/sse-14.c: Ditto.
	* gcc.target/i386/sse-22.c: Ditto.
	* gcc.target/i386/sse-23.c: Ditto.
	* gcc.target/i386/testimm-10.c: Ditto.
	* gcc.target/i386/testround-1.c: Ditto.

From-SVN: r268013

2019-01-17  Wei Xiao  <wei3.xiao@intel.com>

        PR target/88794
        Revert:
        2018-11-12  Wei Xiao  <wei3.xiao@intel.com>

        * config/i386/sse.md: Combine VFIXUPIMM* patterns
        (<avx512>_fixupimm<mode>_maskz<round_saeonly_expand_name>): Update.
        (<avx512>_fixupimm<mode><sd_maskz_name><round_saeonly_name>): Update.
        (<avx512>_fixupimm<mode>_mask<round_saeonly_name>): Remove.
        (avx512f_sfixupimm<mode>_maskz<round_saeonly_expand_name>): Update.
        (avx512f_sfixupimm<mode><sd_maskz_name><round_saeonly_name>): Update.
        (avx512f_sfixupimm<mode>_mask<round_saeonly_name>): Remove.

From-SVN: r268012

gcc/ChangeLog:
2019-01-17  Wei Xiao  <wei3.xiao@intel.com>

        PR target/88794
        Revert:
        2018-12-15  Jakub Jelinek  <jakub@redhat.com>

        PR target/88489
        * config/i386/sse.md (UNSPEC_SFIXUPIMM): New unspec enumerator.
        (avx512f_sfixupimm<mode><mask_name><round_saeonly_name>): Use it
        instead of UNSPEC_FIXUPIMM.

gcc/testsuite/ChangeLog:
2019-01-17  Wei Xiao  <wei3.xiao@intel.com>

        PR target/88794
        Revert:
        2018-12-15  Jakub Jelinek  <jakub@redhat.com>

        PR target/88489
        * gcc.target/i386/avx512vl-vfixupimmsd-2.c: New test.
        * gcc.target/i386/avx512vl-vfixupimmss-2.c: New test.

From-SVN: r268011

2019-01-17  Richard Biener  <rguenther@suse.de>

	PR lto/86736
	* dwarf2out.c (want_pubnames): Never generate pubnames sections
	and friends for the LTO part of debug info.

From-SVN: r268010

	PR tree-optimization/86214
	* cfgexpand.c (add_stack_var_conflict): Don't add any conflicts
	if x == y.

From-SVN: r268009

	PR rtl-optimization/88870
	* dce.c (deletable_insn_p): Never delete const/pure calls that can
	throw if we can't alter the cfg or delete dead exceptions.
	(mark_insn): Don't call find_call_stack_args for such calls.

	* gcc.dg/pr88870.c: New test.

From-SVN: r268008

2019-01-17  Kewen Lin  <linkw@gcc.gnu.org>

gcc/ChangeLog
    * doc/extend.texi: Add four new prototypes for vec_ld and seven new
    prototypes for vec_st.
    * config/rs6000/rs6000-c.c (altivec_overloaded_builtins): Add entries
    for scalar address type variants of altivec_vec_ld/altivec_vec_st,
    mainly on signed/unsigned long long and double.

gcc/testsuite/ChangeLog
    * gcc.target/powerpc/altivec_vld_vst_addr.c: New test.

From-SVN: r268007

Concepts-checking and other kinds of early tsubsting may often take
place while location wrappers are suppressed, e.g. because we've
triggered template instantiation within template parameter lists.

With that, exprs that are usually wrapped by VIEW_CONVERT_EXPRs
location wrappers may end up wrapped by NON_LVALUE_EXPRs that are not
marked as location wrappers.  If such NON_LVALUE_EXPRs tsubsted exprs
undergo another round of tsubsting, say for constraint checking, or
even for another round of specialization, they will be rejected by
tsubst_copy_and_build.

This patch arranges for suppress_location_wrappers to be saved and
reset when pushing to the top level, and restored when popping from
it.


for  gcc/cp/ChangeLog

	PR c++/87768
	* cp-tree.h (saved_scope): Add suppress_location_wrappers.
	* name-lookup.c (do_push_to_top_level): Save and reset it.
	(do_pop_from_top_level): Restore it.

for  gcc/testsuite/ChangeLog

	PR c++/87768
	* g++.dg/concepts/pr87768.C: New.

From-SVN: r268006

dwarf2out recognizes unspecified auto types by the identifier.  C++
template class placeholders are unspecified auto types that take the
identifier of the class rather than those used by preexisting auto
types, so dwarf2out ICEs when it finds one of those.  Alas, they may
be visible to dwarf2out, since the types of e.g. static data members
of templates are only deduced at member instantiation, i.e., if the
data member is actually referenced, but the data member is added as a
field, still with unspecified auto placeholder type, when the
enclosing class is instantiated.

I've changed placeholder creator to use an auto identifier instead,
which allowed dropping the placeholder test in C++'s is_auto (alas, it
can't be used in dwarf2out, think LTO).  To avoid losing information
in error messages and dumps and whatnot, I've added code to recognize
placeholders for template classes say A and print them out as
A<...auto...>.

for  gcc/cp/ChangeLog

	PR c++/86648
        * pt.c (make_template_placeholder): Use auto_identifier.
        (is_auto): Drop CLASS_PLACEHOLDER_TEMPLATE test.
        * error.c (dump_type): Handle template placeholders.
        * cxx-pretty-print.c (pp_cx_unqualified_id): Likewise.

for  gcc/testsuite/ChangeLog

	PR c++/86648
        * gcc.dg/cpp1z/pr86648.C: New.

From-SVN: r268005

Diagnostics for testsuite/g++.dg/cpp0x/inh-ctor32.C varied across
platforms.  Specifically, on ARM, the diagnostics within the subtest
derived_ctor::inherited_derived_ctor::constexpr_noninherited_ctor did
not match those displayed on other platforms, and the test failed.

The difference seemed to have to do with locations assigned to ctors,
but it was more subtle: on ARM, the instantiation of bor's template
ctor was nested within the instantiation of bar's template ctor
inherited from bor.  The reason turned out to be related with the
internal return type of ctors: arm_cxx_cdtor_returns_this is enabled
for because of AAPCS, while cxx.cdtor_returns_this is disabled on most
other platforms.  While convert_to_void returns early with a VOID
expr, the non-VOID return type of the base ctor CALL_EXPR causes
convert_to_void to inspect the called decl for nodiscard attributes:
maybe_warn_nodiscard -> cp_get_fndecl_from_callee ->
maybe_constant_init -> cxx_eval_outermost_constant_expr ->
instantiate_constexpr_fns -> nested instantiation.

The internal return type assigned to a cdtor should not affect
instantiation (constexpr or template) decisions, IMHO.  We know it
affects diagnostics, but I have a hunch this might bring deeper issues
with it, so I've arranged for the CALL_EXPR handler in convert_to_void
to disregard cdtors, regardless of the ABI.


for  gcc/cp/ChangeLog

	PR c++/88146
	* cvt.c (convert_to_void): Handle all cdtor calls as if
	returning void.

From-SVN: r268004

    PR target/87306
    * gcc.dg/vect/bb-slp-pow-1.c: Modify to reflect that
    the loop is not vectorized on POWER unless hardware 
    misaligned loads are available.

From-SVN: r268003

    
    Currently, we dropg (which clears gp.m) after we CAS the g status
    to _Grunnable or _Gwaiting. Immediately after CASing the g status,
    another thread may CAS it to _Gscan status and scan its stack.
    With precise stack scan, it accesses gp.m in order to switch to g
    and back (in doscanstackswitch). This races with dropg. If
    doscanstackswitch reads gp.m, then dropg runs, when we restore
    the m at the end of the scan it will set to a stale value. Worse,
    if dropg runs after doscanstackswitch sets the new m, gp will be
    running with a nil m.
    
    To fix this, we do dropg before CAS g status to _Grunnable or
    _Gwaiting. We can do this safely if we are CASing from _Grunning,
    as we own the g when it is in _Grunning. There is one case where
    we CAS from _Gsyscall to _Grunnable. It is not safe to dropg when
    it is in _Gsyscall, as precise stack scan needs to read gp.m in
    order to signal the m. So we need to introduce a transient state,
    _Gexitingsyscall, between _Gsyscall and _Grunnable, where the GC
    should not scan its stack.
    
    In is a little unfortunate that we have to add another g status.
    We could reuse an existing one (e.g. _Gcopystack), but it is
    clearer and safer to just use a new one, as Austin suggested.
    
    Reviewed-on: https://go-review.googlesource.com/c/158157

From-SVN: r268001

From-SVN: r267999

Handle DW_FORM_GNU_strp_alt which references the .debug_str section in the
.gnu_debugaltlink file.

2019-01-17  Tom de Vries  <tdevries@suse.de>

	PR libbacktrace/82857
	* dwarf.c (read_attribute): Handle DW_FORM_GNU_strp_alt
	using altlink.

From-SVN: r267996

Handle DW_FORM_GNU_strp_alt and DW_FORM_GNU_ref_alt references robustly in
presence of missing .gnu_debugaltlink file.

2019-01-17  Tom de Vries  <tdevries@suse.de>

	* dwarf.c (enum attr_val_encoding): Add ATTR_VAL_NONE.
	(read_attribute): Add altlink parameter.  Handle missing altlink for
	DW_FORM_GNU_strp_alt and DW_FORM_GNU_ref_alt.
	(find_address_ranges, build_address_map, build_dwarf_data): Add and
	handle altlink parameter.
	(read_referenced_name, read_function_entry): Add argument to
	read_attribute call.

From-SVN: r267995

Add an altlink field to struct dwarf_data, and initialize it with the pointer
to the struct dwarf_data for the .gnu_debugaltlink.

2019-01-17  Tom de Vries  <tdevries@suse.de>

	* dwarf.c (struct dwarf_data): Add altlink field.
	(backtrace_dwarf_add): Add and handle fileline_altlink parameter.
	* elf.c	(elf_add): Add argument to backtrace_dwarf_add call.
	(phdr_callback, backtrace_initialize): Add argument to elf_add calls.
	* internal.h (backtrace_dwarf_add): Add fileline_altlink parameter.
	* pecoff.c (coff_add): Add argument to backtrace_dwarf_add call.
	* xcoff.c (xcoff_add): Same.

From-SVN: r267994