The code to implement new-style gccgo name mangling had a recipe that
    didn't quite match the one in the compiler (incorrect handling for
    '.'). This showed up as a failure in the gotools cgo test if the
    directory containing the test run included a "." character.
    
    Reviewed-on: https://go-review.googlesource.com/c/147917

From-SVN: r265981

gcc/c-family/ChangeLog:

	PR middle-end/81824
	* c-attribs.c (handle_copy_attribute): New function.

gcc/cp/ChangeLog:

	PR middle-end/81824
	* pt.c (warn_spec_missing_attributes): Move code to attribs.c.
	Call decls_mismatched_attributes.

gcc/ChangeLog:

	PR middle-end/81824
	* attribs.c (has_attribute): New helper function.
	(decls_mismatched_attributes, maybe_diag_alias_attributes): Same.
	* attribs.h (decls_mismatched_attributes): Declare.
	* cgraphunit.c (handle_alias_pairs): Call maybe_diag_alias_attributes.
	(maybe_diag_incompatible_alias): Use OPT_Wattribute_alias_.
	* common.opt (-Wattribute-alias): Take an argument.
	(-Wno-attribute-alias): New option.
	* doc/extend.texi (Common Function Attributes): Document copy.
	(Common Variable Attributes): Same.
	* doc/invoke.texi (-Wmissing-attributes): Document enhancement.
	(-Wattribute-alias): Document new option argument.

gcc/testsuite/ChangeLog:

	PR middle-end/81824
	* gcc.dg/Wattribute-alias.c: New test.
	* gcc.dg/Wmissing-attributes.c: New test.
	* gcc.dg/attr-copy.c: New test.
	* gcc.dg/attr-copy-2.c: New test.
	* gcc.dg/attr-copy-3.c: New test.
	* gcc.dg/attr-copy-4.c: New test.

From-SVN: r265980

re PR fortran/78351 (comma not terminating READ of formatted input field - ok in 4.1.7, not 4.4.7- maybe related to 25419?)

2018-11-09  Jerry DeLisle  <jvdelisle@gcc.gnu.org>

	PR libfortran/78351
	* io/transfer.c (read_sf_internal): Delete leftover
	debug code.

From-SVN: r265979

A couple of very minor issues with the new support for CPU
aliases.

	* config/arm/parsecpu.awk (/alias/): Tighten invisible alias
	matching criteria.  Remove unused array initializer.

From-SVN: r265978

gcc/c-family/ChangeLog:

	PR c/87795
	* c-common.c (check_user_alignment): Use MAX_OFILE_ALIGNMENT.

gcc/testsuite/ChangeLog:

	PR c/87795
	* gcc.dg/attr-aligned.c: New test.

From-SVN: r265977

2018-11-09  Bill Schmidt  <wschmidt@linux.ibm.com>
	    Jinsong Ji  <jji@us.ibm.com>

	* config/rs6000/xmmintrin.h (_mm_cvtss_si32): Fix incorrect
	constraints by introducing a new temporary.
	(_mm_cvtss_si64): Likewise.


Co-Authored-By: Jinsong Ji <jji@us.ibm.com>

From-SVN: r265975

    
    For compatibility with the gc toolchain's syscall package.
    
    Fixes golang/go#28665
    
    Reviewed-on: https://go-review.googlesource.com/c/148697

From-SVN: r265974

From-SVN: r265971

2018-11-09  Martin Liska  <mliska@suse.cz>

	* common.opt: Add -fipa-stack-alignment flag.
	* doc/invoke.texi: Document it.
	* final.c (rest_of_clean_state): Guard stack
	shrinking with flag.
2018-11-09  Martin Liska  <mliska@suse.cz>

	* gcc.target/i386/ipa-stack-alignment.c: New test.

From-SVN: r265970

2018-11-09  Martin Liska  <mliska@suse.cz>

	* cgraph.h (ipa_discover_readonly_nonaddressable_vars): Rename
	to ...
	(ipa_discover_variable_flags): ... this.
	* common.opt: Come up with new flag -fipa-reference-addressable.
	* doc/invoke.texi: Document it.
	* ipa-reference.c (propagate): Call the renamed fn.
	* ipa-visibility.c (whole_program_function_and_variable_visibility):
	Likewise.
	* ipa.c (ipa_discover_readonly_nonaddressable_vars): Renamed to
	...
	(ipa_discover_variable_flags): ... this.  Discover
	non-addressable variables only with the newly added flag.
	* opts.c: Enable the newly added flag with -O1 and higher
	optimization level.
2018-11-09  Martin Liska  <mliska@suse.cz>

	* gcc.dg/tree-ssa/writeonly-2.c: New test.

From-SVN: r265969

gcc/ChangeLog:
	* json.cc (selftest::test_writing_literals): Fix comment.

From-SVN: r265968

2018-11-09  Jakub Jelinek  <jakub@redhat.com>

	* gcc.dg/gomp/workshare-reduction-1.c: New test.
	* gcc.dg/gomp/workshare-reduction-2.c: New test.
	* gcc.dg/gomp/workshare-reduction-3.c: New test.
	* gcc.dg/gomp/workshare-reduction-4.c: New test.
	* gcc.dg/gomp/workshare-reduction-5.c: New test.
	* gcc.dg/gomp/workshare-reduction-6.c: New test.
	* gcc.dg/gomp/workshare-reduction-7.c: New test.
	* gcc.dg/gomp/workshare-reduction-8.c: New test.
	* gcc.dg/gomp/workshare-reduction-9.c: New test.
	* gcc.dg/gomp/workshare-reduction-10.c: New test.
	* gcc.dg/gomp/workshare-reduction-11.c: New test.
	* gcc.dg/gomp/workshare-reduction-12.c: New test.
	* gcc.dg/gomp/workshare-reduction-13.c: New test.
	* gcc.dg/gomp/workshare-reduction-14.c: New test.
	* gcc.dg/gomp/workshare-reduction-15.c: New test.
	* gcc.dg/gomp/workshare-reduction-16.c: New test.
	* gcc.dg/gomp/workshare-reduction-17.c: New test.
	* gcc.dg/gomp/workshare-reduction-18.c: New test.
	* gcc.dg/gomp/workshare-reduction-19.c: New test.
	* gcc.dg/gomp/workshare-reduction-20.c: New test.
	* gcc.dg/gomp/workshare-reduction-21.c: New test.
	* gcc.dg/gomp/workshare-reduction-22.c: New test.
	* gcc.dg/gomp/workshare-reduction-23.c: New test.
	* gcc.dg/gomp/workshare-reduction-24.c: New test.
	* gcc.dg/gomp/workshare-reduction-25.c: New test.
	* gcc.dg/gomp/workshare-reduction-26.c: New test.
	* gcc.dg/gomp/workshare-reduction-27.c: New test.
	* gcc.dg/gomp/workshare-reduction-28.c: New test.
	* gcc.dg/gomp/workshare-reduction-29.c: New test.
	* gcc.dg/gomp/workshare-reduction-30.c: New test.
	* gcc.dg/gomp/workshare-reduction-31.c: New test.
	* gcc.dg/gomp/workshare-reduction-32.c: New test.
	* gcc.dg/gomp/workshare-reduction-33.c: New test.
	* gcc.dg/gomp/workshare-reduction-34.c: New test.
	* gcc.dg/gomp/workshare-reduction-35.c: New test.
	* gcc.dg/gomp/workshare-reduction-36.c: New test.
	* gcc.dg/gomp/workshare-reduction-37.c: New test.
	* gcc.dg/gomp/workshare-reduction-38.c: New test.
	* gcc.dg/gomp/workshare-reduction-39.c: New test.
	* gcc.dg/gomp/workshare-reduction-40.c: New test.
	* gcc.dg/gomp/workshare-reduction-41.c: New test.
	* gcc.dg/gomp/workshare-reduction-42.c: New test.
	* gcc.dg/gomp/workshare-reduction-43.c: New test.
	* gcc.dg/gomp/workshare-reduction-44.c: New test.
	* gcc.dg/gomp/workshare-reduction-45.c: New test.
	* gcc.dg/gomp/workshare-reduction-46.c: New test.
	* gcc.dg/gomp/workshare-reduction-47.c: New test.
	* gcc.dg/gomp/workshare-reduction-48.c: New test.
	* gcc.dg/gomp/workshare-reduction-49.c: New test.
	* gcc.dg/gomp/workshare-reduction-50.c: New test.
	* gcc.dg/gomp/workshare-reduction-51.c: New test.
	* gcc.dg/gomp/workshare-reduction-52.c: New test.
	* gcc.dg/gomp/workshare-reduction-53.c: New test.
	* gcc.dg/gomp/workshare-reduction-54.c: New test.
	* gcc.dg/gomp/workshare-reduction-55.c: New test.
	* gcc.dg/gomp/workshare-reduction-56.c: New test.
	* gcc.dg/gomp/workshare-reduction-57.c: New test.
	* gcc.dg/gomp/workshare-reduction-58.c: New test.
libgomp/
	* testsuite/libgomp.c-c++-common/task-reduction-13.c: New test.
	* testsuite/libgomp.c-c++-common/task-reduction-14.c: New test.

From-SVN: r265967

2018-11-09  Martin Liska  <mliska@suse.cz>

	* config/aarch64/aarch64.c (aarch64_parse_arch): Do not copy
	string to a stack buffer.
	(aarch64_parse_cpu): Likewise.
	(aarch64_parse_tune): Likewise.

From-SVN: r265966

2018-11-09  Richard Biener  <rguenther@suse.de>

	PR tree-optimization/87953
	* tree-vect-loop.c (vectorizable_reduction): For analysis
	always pass ops[0] to vectorizable_condition.

From-SVN: r265964

2018-11-09  Stafford Horne  <shorne@gmail.com>
	    Richard Henderson  <rth@twiddle.net>
	    Joel Sherrill  <joel@rtems.org>

	* common/config/or1k/or1k-common.c: New file.
	* config/or1k/*: New.
	* config.gcc (or1k*-*-*): New.
	* configure.ac (or1k*-*-*): New test for openrisc tls.
	* configure: Regenerated.
	* doc/install.texi: Document OpenRISC triplets.
	* doc/invoke.texi: Document OpenRISC arguments.
	* doc/md.texi: Document OpenRISC.


Co-Authored-By: Joel Sherrill <joel@rtems.org>
Co-Authored-By: Richard Henderson <rth@twiddle.net>

From-SVN: r265963

gcc/testsuite/ChangeLog:

2018-11-09  Stafford Horne  <shorne@gmail.com>
	    Richard Henderson  <rth@twiddle.net>

	* gcc.c-torture/execute/20101011-1.c: Adjust for OpenRISC.
	* gcc.dg/20020312-2.c: Likewise.
	* gcc.dg/attr-alloc_size-11.c: Likewise.
	* gcc.dg/builtin-apply2.c: Likewise.
	* gcc.dg/nop.h: Likewise.
	* gcc.dg/torture/stackalign/builtin-apply-2.c: Likewise.
	* gcc.dg/tree-ssa/20040204-1.c: Likewise.
	* gcc.dg/tree-ssa/reassoc-33.c: Likewise.
	* gcc.dg/tree-ssa/reassoc-34.c: Likewise.
	* gcc.dg/tree-ssa/reassoc-35.c: Likewise.
	* gcc.dg/tree-ssa/reassoc-36.c: Likewise.
	* lib/target-supports.exp
	(check_effective_target_logical_op_short_circuit): Add or1k*-*-*.
	* gcc.target/or1k/*: New.


Co-Authored-By: Richard Henderson <rth@twiddle.net>

From-SVN: r265962

libgcc/ChangeLog:

2018-11-09  Stafford Horne  <shorne@gmail.com>
	    Richard Henderson  <rth@twiddle.net>

	* config.host: Add OpenRISC support.
	* config/or1k/*: New.


Co-Authored-By: Richard Henderson <rth@twiddle.net>

From-SVN: r265961

This patch simplifies the table of CPUs supported in GCC by making
use of the new alias feature.  Most of the changes are fairly
straight-forward:
- arm7tdmi and arm7tdmi-s are the same thing.
- arm710t, arm720t and arm740t differ only in features external to the core
- arm920 and arm920t are the same thing; arm922t and arm940t differ from
  arm920t only in features external to the core; ep9312 is an arm920t-derived
  core that we continue to recognize for legacy reasons.
- arm10tdmi and arm1020t differ only in features external to the core.
- arm9e, arm946te-s, arm966e-s and arm968e-s differ only in features external
  to the core.
- arm10e, arm1020e and arm1022e differ only in features external to the core.

The arm10e/arm1020e/arm1022e change is the only one which changes
behaviour of the compiler slightly.  Previously, and for no reason
that I can remember, the scheduler for arm1020e/arm1022e was not used
for arm10e: this was probably an oversight.  The unification means
that the same scheduler is now used for all three cores.

	* config/arm/arm-cpus.in (arm7tdmi): Add an alias for arm7tdmi-s.
	(arm7tdmi-s): Delete CPU.
	(arm710t): Add aliases for arm720t and arm740t.
	(arm720t, arm740t): Delete CPUs.
	(arm920t): Add aliases for arm920, arm922t and arm940t.
	(arm920, arm922t, arm940t): Delete CPUs.
	(arm10tdmi): Add alias for arm1020t.
	(arm1020t): Delete CPU.
	(arm9e): Add aliases for arm946e-s, arm966e-s and arm968e-s.
	(arm946e-s, arm966e-s, arm968e-s): Delete CPUs.
	(arm10e): Add aliases for arm1020e and arm1022e.
	(arm1020e, arm1022e): Delete CPU.
	* config/arm/arm.md (generic_sched): Remove entries that are now
	handled by aliases.
	(generic_vfp): Likewise.
	* config/arm/arm1020e.md: Simplify tuning selection based on alias
	changes.
	* config/arm/arm-tune.md: Regenerated.
	* config/arm/arm-tables.opt: Regenerated.

From-SVN: r265960

2018-11-09  Richard Biener  <rguenther@suse.de>

	PR tree-optimization/87621
	* tree-vect-loop.c (vectorizable_reduction): Handle reduction
	op with only phi inputs.
	* tree-ssa-loop-ch.c: Include tree-ssa-sccvn.h.
	(ch_base::copy_headers): Run CSE on copied loop headers.
	(pass_ch_vect::process_loop_p): Simplify.

	* g++.dg/vect/pr87621.cc: New testcase.

From-SVN: r265959

for  gcc/ChangeLog

	* config/i386/mingw32.h (LINK_SPEC_LARGE_ADDR_AWARE): Adjust
        for non-w64 x86_64 biarch.

From-SVN: r265958

When in_a resolves to a register set in the prev_clobber insn, we may
use the SET_SRC for the compare instead.  However, when in_b so
resolves, we proceed to use the reg with its earlier value.  When both
resolve to the same register and prev_clobber is an insn that modifies
the register, this arrangement may cause the compare to match (when it
shouldn't) and the elimination of the compare to incorrectly succeed.

(set (reg 1) (plus (reg 1) (const_int N)))
(set (reg 2) (reg 1))
(set (reg flags) (compare (reg 1) (reg 2)))

in_a: (reg 1)            --> (plus (reg 1) (const_int N))
in_b: (reg 2) -> (reg 1) -/> oops

(parallel [
 (set (reg flags) (compare (plus (reg 1) (const_int N))
                           (reg 1))) ;; should be (plus...)
 (set (reg 1) (plus (reg 1) (const_int N)))])
(set (reg 2) (reg 1))

This patch arranges for in_b to also undergo SET_SRC substitution
when appropriate, with a shortcut for when in_a and in_b are the same
rtx.


for  gcc/ChangeLog

	PR rtl-optimization/86438
	* compare-elim.c (try_eliminate_compare): Use SET_SRC instead
	of in_b for the compare if in_b is SET_DEST.

for  gcc/testsuite/ChangeLog

	PR rtl-optimization/86438
	* gcc.dg/torture/pr86438.c: New.

From-SVN: r265957

Before revision 254025, we'd reject UNSPECs in debug loc exprs.
TARGET_CONST_NOT_OK_FOR_DEBUG_P still rejects that by default, on all
ports that override it, except for x86, that accepts @gotoff unspecs.
We can indeed accept them in top-level expressions, but not as
subexpressions: the assembler rejects the difference between two
@gotoff symbols, for example.

We could simplify such a difference and drop the @gotoffs, provided
that the symbols are in the same section; we could also accept
@gotoffs plus literal constants.  However, accepting those but
rejecting such combinations as subexpressions would be ugly, and most
likely not worth the trouble: sym@gotoff+litconst hardly makes sense
as a standalone expression, and the difference between @gotoffs should
be avoided to begin with, as follows.

Ideally, the debug loc exprs would use the symbolic data in
REG_EQUIV/REG_EQUAL notes, or delegitimized addresses, instead of
simplifying the difference between two legitimized addresses so that
the occurrences of the GOT register cancel each other.  That would
require some more elaborate surgery in var-tracking and cselib than
would be appropriate at this stage.

for  gcc/ChangeLog

	PR target/87793
	* config/i386/i386.c (ix86_const_not_ok_for_debug_p): Reject
	non-toplevel UNSPEC.

for  gcc/testsuite/ChangeLog

	PR target/87793
	* gcc.dg/pr87793.c: New.

From-SVN: r265956

	* tree-vrp.c (value_range::check): Do not access internals
	directly.
	(value_range::singleton_p): Same.
	(value_range::type): Same.
	(vrp_finalize): Use value_range API.

From-SVN: r265955

From-SVN: r265954

	* vr-values.c (vr_values::get_value_range): Use value_range API
	instead of piecing together ranges.
	(vr_values::update_value_range): Same.

From-SVN: r265953

	* gimple-fold.c (size_must_be_zero_p): Use value_range API instead
	of performing ad-hoc calculations.
	* tree-ssanames.c (set_range_info): New overloaded function
	accepting value_range &.
	(get_range_info): Same.
	* tree-ssanames.h (set_range_info_raw): Remove.
	(set_range_info): New prototype.
	(get_range_info): Same.
	* tree-vrp.h (value_range::null_p): Rename to zero_p.
	* tree-vrp.c (value_range::null_p): Same.

From-SVN: r265952

2018-11-09  Martin Liska  <mliska@suse.cz>

	* LOCAL_PATCHES: Include one local patch.

From-SVN: r265951

2018-11-09  Martin Liska  <mliska@suse.cz>

	PR sanitizer/87892
	* sanitizer_common/sanitizer_linux_libcdep.cc (defined): Return
	1 when CPU_COUNT macro is not defined.

From-SVN: r265950

	* tree.c (fld_type_variant_equal_p): Test user align flag.
	(flt_type_variant): Copy user align flag.
	(fld_incomplete_type_of): Clear it.

From-SVN: r265949

2018-11-09  Prathamesh Kulkarni  <prathamesh.kulkarni@linaro.org>

	* config/arm/neon.md (div<mode>3): New pattern.

testsuite/
	* gcc.target/arm/neon-vect-div-1.c: New test.
	* gcc.target/arm/neon-vect-div-2.c: Likewise.

From-SVN: r265948

Add builtins/intrinsics for PTWRITE. PTWRITE is a new instruction on Intel Gemini Lake/
Goldmont Plus that allows to write values into the Processor Trace log. This allows
very light weight instrumentation of programs.

The intrinsics are compatible to icc. Automatically enabled for Goldmont Plus.

gcc/:

2018-11-08  Andi Kleen  <ak@linux.intel.com>

	* common/config/i386/i386-common.c (OPTION_MASK_ISA_PTWRITE_SET): New.
	(OPTION_MASK_ISA_PTWRITE_UNSET): New.
	(ix86_handle_option): Handle OPT_mptwrite.
	* config/i386/cpuid.h (bit_PTWRITE): Add.
	* config/i386/driver-i386.c (host_detect_local_cpu): Detect ptwrite.
	* config/i386/i386-builtin.def (BDESC): Add ptwrite32/64.
	* config/i386/i386-c.c (ix86_target_macros_internal): Define __PTWRITE__.
	* config/i386/i386.c (ix86_target_string): Handle ptwrite.
	(ix86_option_override_internal): Handle PTA_PTWRITE.
	(ix86_valid_target_attribute_inner_p): Define ptwrite.
	(def_builtin2): Force UINT64 to be 64bit only.
	* config/i386/i386.h (TARGET_PTWRITE): Add.
	(TARGET_PTWRITE_P): Add.
	(PTA_PTWRITE): Add.
	* config/i386/i386.md: Define ptwrite.
	* config/i386/i386.opt: Add -mptwrite.
	* config/i386/immintrin.h (_ptwrite64): Add.
	(_ptwrite32): Add
	* doc/extend.texi: Document __builtin_ia32_ptwrite*.
	* doc/invoke.texi: Document -mptwrite.

gcc/testsuite/:

2018-11-08  Andi Kleen  <ak@linux.intel.com>

	* gcc.target/i386/ptwrite1.c: New test.
	* gcc.target/i386/ptwrite2.c: New test.

From-SVN: r265947

re PR fortran/78351 (comma not terminating READ of formatted input field - ok in 4.1.7, not 4.4.7- maybe related to 25419?)

2018-11-08  Jerry DeLisle  <jvdelisle@gcc.gnu.org>

	PR libfortran/78351
	* io/transfer.c (read_sf_internal): Add support for early
	comma termination of internal unit formatted reads.

	* gfortran.dg/read_legacy_comma.f90: New test.

From-SVN: r265946

From-SVN: r265945

gcc/
	PR rtl-optimization/87600
	* cfgexpand.c (expand_asm_stmt): Catch illegal asm constraint usage.
	* lra-constraints.c (process_alt_operands): Skip illegal hard
	register usage.  Prefer reloading non hard register operands.

gcc/testsuite/
	PR rtl-optimization/87600
	* gcc.dg/pr87600.h: New file.
	* gcc.dg/pr87600-1.c: New test.
	* gcc.dg/pr87600-2.c: Likewise.

From-SVN: r265942

Cherry pick powerpc64 sanitizer fix from upstream llvm.

See https://reviews.llvm.org/rL346030 and
https://reviews.llvm.org/D52900.


2018-11-08  Bill Seurer  <seurer@linux.vnet.ibm.com>

	* libsanitizer/sanitizer_common/sanitizer_linux.cc (CheckASLR):
	Disable ASLR for powerpc64 when using sanitizers.

From-SVN: r265941

	* collect2.c (linker_select):  Add USE_LLD_LD.
	(ld_suffixes): Add ld.lld.
	(main): Handle -fuse-ld=lld.
	* common.opt (-fuse-ld=lld): New option.
	* doc/invoke.texi (-fuse-ld=lld): Document.
	* opts.c (common_handle_option): Handle OPT_fuse_ld_lld.

From-SVN: r265940

2018-11-08  Sandra Loosemore  <sandra@codesourcery.com>

	PR other/36572

	gcc/
	* doc/invoke.texi (Optimize Options): Clarify default behavior
	for -fno-sched-interblock and -fno-sched-spec.

From-SVN: r265939

	* affinity.c: Include <string.h>, <stdio.h>.
	(gomp_display_affinity_place): Remove cpusetp.
	* teams.c: Include <limits.h>.

From-SVN: r265938

	* testsuite/libgomp.c-c++-common/task-reduction-8.c (bar): Add
	in_reduction clause for s[0].

From-SVN: r265934

From-SVN: r265933