This is a first step in tidying rs6000 call patterns, in preparation
to support inline plt calls.

	* config/rs6000/rs6000-protos.h (rs6000_call_template): Declare.
	(rs6000_sibcall_template): Declare.
	(macho_call_template): Rename from output_call.
	* config/rs6000/rs6000.c (rs6000_call_template_1): New function.
	(rs6000_call_template, rs6000_sibcall_template): Likewise.
	(macho_call_template): Rename from output_call.
	* config/rs6000/rs6000.md (tls_gd_aix, tls_gd_sysv),
	(tls_gd_call_aix, tls_gd_call_sysv, tls_ld_aix, tls_ld_sysv),
	(tls_ld_call_aix, tls_ld_call_sysv, call_nonlocal_sysv),
	(call_nonlocal_sysv_secure, call_value_nonlocal_sysv),
	(call_value_nonlocal_sysv_secure, call_nonlocal_aix),
	(call_value_nonlocal_aix): Use rs6000_call_template and update
	occurrences of output_call to macho_call_template.
	(sibcall_nonlocal_sysv, sibcall_value_nonlocal_sysv, sibcall_aix),
	(sibcall_value_aix): Use rs6000_sibcall_template.

From-SVN: r266600

2018-11-28  Aaron Sawdey  <acsawdey@linux.ibm.com>

	* config/rs6000/rs6000-string.c (expand_block_clear): Change how
	we determine if unaligned vsx is ok.

From-SVN: r266599

Implement the proposed semantics from P1164R0, which reverts the changes
of LWG 2935. This means that failure to create a directory because a
non-directory already exists with that name will be reported as an
error.

While rewriting the function, also fix PR 87846, which is a result of
the C++17 changes to how a trailing slash on a path affects the last
component of a path.

	PR libstdc++/86910
	PR libstdc++/87846
	* src/filesystem/ops.cc (experimental::create_directories): Report
	an error when the path resolves to an existing non-directory (P1164).
	* src/filesystem/std-ops.cc (create_directories): Likewise. Handle
	empty filenames due to trailing slashes.
	* testsuite/27_io/filesystem/operations/create_directories.cc: Test
	when some component of the path exists and is not a directory. Test
	trailing slashes.
	* testsuite/experimental/filesystem/operations/create_directories.cc:
	Likewise.

From-SVN: r266598

From-SVN: r266597

PR c/88065 - ICE in -Wsizeof-pointer-memaccess on an invalid strncpy
PR c/87297 - ICE on strncpy with an undeclared argument

gcc/c-family/ChangeLog:

	PR c/88065
	PR c/87297
	* c-warn.c (sizeof_pointer_memaccess_warning): Bail if source
	or destination is an error.

gcc/testsuite/ChangeLog:

	PR c/88065
	PR c/87297
	* c-c++-common/Wsizeof-pointer-memaccess4.c: New test.

From-SVN: r266594

This sets a precedence in upstream for merging architecture agnostic
C bindings into one block, rather than separate duplicated blocks.

A nice side-effect is it almost completes the C bindings for
s390-linux-gnu and sparc-linux-gnu, and fixes a bug on MIPS32 where
O_SYNC had the wrong value.

Backported from upstream druntime master.

Reviewed-on: https://github.com/dlang/druntime/pull/2357

From-SVN: r266593

	* parser.c (cp_parser_namespace_definition): Parse the optional inline
	keyword in a nested-namespace-definition.  Adjust push_namespace call.
	Formatting fix.

	* g++.dg/cpp2a/nested-inline-ns1.C: New test.
	* g++.dg/cpp2a/nested-inline-ns2.C: New test.

From-SVN: r266592

https://gcc.gnu.org/ml/gcc-patches/2018-11/msg02301.html
	PR c++/87531
	* class.c (finish_struct): In a template, add artificial using
	decl for operator=.

	* g++.dg/lookup/pr87531.C: New.

From-SVN: r266590

	* predict.c (determine_unlikely_bbs): Forward declare; also determine
	edges that are always known to be taken because it is only likely
	edge out of given BB.
	(tree_estimate_probability): Call before profile guessing to get bit
	of extra precision.

	* gcc.dg/predict-13.c: Update template.
	* gcc.dg/predict-13b.c: New testcase.
	* gcc.dg/predict-22.c: New testcase.
	* gcc.dg/tree-ssa/ipa-split-4.c: Change abort to other function to
	get sane profile.

From-SVN: r266587

From-SVN: r266586

	* tree-ssa-ifcombine.c (update_profile_after_ifcombine): Handle
	profile_probability::always better.

From-SVN: r266585

profile-count.h (profile_count::split): Give better result when splitting profile_probability::always.


	* profile-count.h (profile_count::split): Give better result when
	splitting profile_probability::always.

From-SVN: r266584

	* except.c (do_allocate_exception): Annotate __cxa_allocate_exception
	as COLD.

From-SVN: r266583

2018-11-28  Vladimir Makarov  <vmakarov@redhat.com>

	PR target/88207
	* ira-costs.c (scan_one_insn): Process subregs when updating costs
	for pseudos and allocnos from insn.

From-SVN: r266582

	* decl.c (grokdeclarator): Check if declarator is null.

	* g++.dg/ext/flexary31.C: New test.

From-SVN: r266581

From-SVN: r266577

        * g++.dg/debug/dwarf2/pr86900.C: XFAIL AIX.
        * g++.dg/opt/pr83084.C: XFAIL AIX.

From-SVN: r266576

From-SVN: r266574

    
    Support inlining functions that contain only assignments and return
    statements, with expressions of either constants or parameters.
    Functions that contain other kinds of statements or expressions are
    not yet inlined.  With this change, about 100 functions in the
    standard library are inlinable.
    
    Reviewed-on: https://go-review.googlesource.com/c/150073

From-SVN: r266573

Updated the library version to 76:3:0.

libphobos/ChangeLog:

2018-11-28  Iain Buclaw  <ibuclaw@gdcproject.org>

	* Makefile.in: Rebuild.
	* configure: Rebuild.
	* configure.ac (DRUNTIME_SOVERSION): Remove.
	(PHOBOS_SOVERSION): Remove.
	(libtool_VERSION): Add.
	* libdruntime/Makefile.am: Use libtool_VERSION.
	* libdruntime/Makefile.in: Rebuild.
	* src/Makefile.am: Use libtool_VERSION.
	* src/Makefile.in: Rebuild.
	* testsuite/Makefile.in: Rebuild.

From-SVN: r266572

	* config/h8300/constraints.md: Add "C" constraint for call insns.
	* config/h8300/h8300.md (call, call_value): Turn into a define_expand
	and define_insn pair.  Move invalid call targets into a register in
	the expander and fix constraints in the matching pattern.
	* config/h8300/predicates.md (call_expander_operand): Renamed from
	call_insn_operand.  Reject things we shouldn't be trying to handle.
	(call_insn_operand): New predicate for use by the call/call_value
	insns.
	(small_call_insn_operand): Update appropriately.

From-SVN: r266571

2018-11-28  Sam Tebbs  <sam.tebbs@arm.com>

	* config/aarch64/aarch64.c (aarch64_process_target_attr): Replace
	calls to strtok with strtok_r.

From-SVN: r266570

The recent patch for PR 83306 removed the fs_err_concat functions that
were used by the experimental::filesystem::filesystem_error class as
well. This fixes it by doing the string generation directly in
filesystem_error::_M_gen_what() instead of using the removed function.

	PR libstdc++/83306
	* src/filesystem/path.cc (filesystem_error::_M_gen_what()): Create
	string directly, instead of calling fs_err_concat.

From-SVN: r266569

	PR libstdc++/83511
	* include/std/string_view (basic_string_view::substr): Add default
	argument to first parameter.
	* include/experimental/string_view (basic_string_view::substr):
	Likewise.
	* testsuite/21_strings/basic_string_view/operations/substr/char/
	83511.cc: New test.
	* testsuite/21_strings/basic_string_view/operations/substr/wchar_t/
	83511.cc: New test.
	* testsuite/experimental/string_view/operations/substr/char/83511.cc:
	New test.
	* testsuite/experimental/string_view/operations/substr/wchar_t/83511.cc:
	New test.

From-SVN: r266568

2018-11-28  Edward Smith-Rowland  <3dw4rd@verizon.net>

	Implement uniform container erasure for C++20.
	* include/Makefile.am: Move erase_if.h.
	* include/Makefile.in: Move erase_if.h.
	* include/experimental/bits/erase_if.h: Move ...
	* include/bits/erase_if.h: ... here.
	* include/experimental/map: Move erase_if.h.
	* include/experimental/set: Move erase_if.h.
	* include/experimental/unordered_map: Move erase_if.h.
	* include/experimental/unordered_set: Move erase_if.h.
	* include/std/deque (erase_if, erase): New functions.
	* include/std/forward_list: Ditto.
	* include/std/list: Ditto.
	* include/std/map: Ditto.
	* include/std/set: Ditto.
	* include/std/string: Ditto.
	* include/std/unordered_map: Ditto.
	* include/std/unordered_set: Ditto.
	* include/std/vector: Ditto.
	* testsuite/21_strings/basic_string/erasure.cc: New test.
	* testsuite/23_containers/deque/erasure.cc: New test.
	* testsuite/23_containers/forward_list/erasure.cc: New test.
	* testsuite/23_containers/list/erasure.cc: New test.
	* testsuite/23_containers/map/erasure.cc: New test.
	* testsuite/23_containers/set/erasure.cc: New test.
	* testsuite/23_containers/unordered_map/erasure.cc: New test.
	* testsuite/23_containers/unordered_set/erasure.cc: New test.
	* testsuite/23_containers/vector/erasure.cc: New test.

From-SVN: r266567

Add fix for "path::lexically_relative is confused by trailing slashes".

	* doc/xml/manual/intro.xml: Document LWG 3096 change.
	* src/filesystem/std-path.cc (path::lexically_relative(const path&)):
	Treat a final empty element equivalently to a final dot element.
	* testsuite/27_io/filesystem/path/generation/relative.cc: Add checks
	for the examples in the DR.

From-SVN: r266566

The class API provides no way to modify the members, so we can share
them between copies of the same object. Copying becomes a simple
reference count update, which doesn't throw.

Also adjust the what() string to allow distinguishing between an empty
path passed to the constructor, and no path.

	PR libstdc++/83306
	* include/bits/fs_path.h (filesystem_error): Move data members into
	pimpl class owned by shared_ptr. Remove inline definitions of member
	functions.
	* src/filesystem/std-path.cc (filesystem_error::_Impl): Define.
	(filesystem_error): Define member functions.
	* testsuite/27_io/filesystem/filesystem_error/cons.cc: New test.
	* testsuite/27_io/filesystem/filesystem_error/copy.cc: New test.

From-SVN: r266565

From-SVN: r266563

If the allocation of abbrevs->abbrevs in read_abbrevs fails, then
abbrevs->num_abbrevs remains nonzero, and consequently free_abbrevs will
segfault when accessing abbrevs->abbrevs.

Fix this by setting abbrevs->num_abbrevs only after abbrevs->abbrevs
allocation has succeeded.

Bootstrapped and reg-tested on x86_64.

2018-11-28  Tom de Vries  <tdevries@suse.de>

	* dwarf.c (read_abbrevs): Fix handling of abbrevs->abbrevs allocation
	failure.

From-SVN: r266562

2018-11-28  Richard Biener  <rguenther@suse.de>

	PR tree-optimization/88223
	* tree-ssa-sccvn.c (vn_reference_lookup_3): When skipping
	over a stored-same value may-alias store make sure to consider
	partial overlaps which are valid when TBAA reasonings do not
	apply and byte-granular overlaps are possible at all.

	* gcc.dg/torture/pr88223.c: New testcase.

From-SVN: r266560

	* doc/xml/manual/status_cxx2017.xml: Update C++17 status.
	* doc/html/*: Regenerate.

From-SVN: r266559

re PR tree-optimization/88217 (Compile time and memory hog w/ -O2 -fstrict-enums -fno-tree-forwprop -fno-tree-fre)

2018-11-28  Richard Biener  <rguenther@suse.de>

	PR tree-optimization/88217
	* vr-values.c (vr_values::extract_range_from_phi_node): Make
	sure to handle results > +INF and < -INF correctly when
	trying to drop down to +INF - 1 or -INF + 1.

	* g++.dg/pr88217.C: New testcase.

From-SVN: r266557

git commit 41f70262f (svn rev 264868) exposed a signed/unsigned
comparison.  Fixed by matching the type of the local var to that of
the tree field.

	* xcoffout.c (do_block): Signed/unsigned warning fix.

From-SVN: r266555

	PR testsuite/85368
	* gcc.dg/tree-ssa/phi-opt-11.c: For branch_cost targets, expect 0 ifs
	rather than 0 or 2 depending on logical_op_short_circuit.

From-SVN: r266552

2018-11-28  Richard Biener  <rguenther@suse.de>

	PR tree-optimization/79351
	* tree-ssa-sccvn.c (vn_reference_lookup_3): For assignments from
	empty CONSTRUCTORs ensure the store is at a constant position.

	* gcc.dg/torture/pr79351.c: New testcase.

From-SVN: r266551

re PR fortran/88229 (ICE tree check: expected integer_cst, have nop_expr in get_len, at tree.h:5608)

2018-11-28  Richard Biener  <rguenther@suse.de>

	PR tree-optimization/88229
	* tree-ssa.c (non_rewritable_mem_ref_base): Check DECL_SIZE_UNIT
	is an INTEGER_CST before accessing it so.

From-SVN: r266550

gcc/ChangeLog:

2018-11-28  Sam Tebbs  <sam.tebbs@arm.com>

	* doc/invoke.texi (-mtune=): Remove obsolete CPU names.

From-SVN: r266549

	PR target/88189
	* config/i386/i386.c (ix86_expand_sse_movcc): Handle DFmode and
	SFmode using sse4_1_blendvs[sd] with TARGET_SSE4_1.  Formatting fixes.
	* config/i386/sse.md (sse4_1_blendv<ssemodesuffix>): New pattern.

	* gcc.target/i386/sse4_1-pr88189-1.c: New test.
	* gcc.target/i386/sse4_1-pr88189-2.c: New test.
	* gcc.target/i386/avx-pr88189-1.c: New test.
	* gcc.target/i386/avx-pr88189-2.c: New test.

From-SVN: r266548

	PR c++/87476
	* typeck2.c (digest_init_r): Re-add handing of signed/unsigned char
	strings and add it to the initialization of wide array from non-wide
	string diagnostics too.

	* g++.dg/cpp0x/pr87476-1.C: New test.
	* g++.dg/cpp0x/pr87476-2.C: New test.

From-SVN: r266547

	PR c++/88215
	* c-ubsan.c: Include langhooks.h.
	(ubsan_instrument_division): Change gcc_assert that main variants
	of op0 and op1 types are equal to gcc_checking_assert that the
	main variants are compatible types.

	* c-c++-common/ubsan/pr88215.c: New test.

From-SVN: r266546