This makes make_more_copies do what its documentation says, that is,
only make an intermediate pseudo if copying to a pseudo.

This regressed generated code quality when we didn't keep the original
notes that were on the copy, but since r265582 we do, and only allowing
pseudos now is a win.  It also simplifies the code.


	* combine.c (make_more_copies): Only make an intermediate copy if the
	dest of a move is a pseudo.

From-SVN: r266004

From-SVN: r266001

re PR testsuite/87965 (Test cases c-c++-common/pr60226.c and gcc.dg/pr39323-1.c fail starting with r265977)

gcc/testsuite/ChangeLog:

	PR testsuite/87965
	* c-c++-common/pr60226.c: Adjust text of expected diagnostic.
	* gcc.dg/pr39323-1.c: Ditto.

From-SVN: r265998

ChangeLog:

yyyy-mm-dd  Stafford Horne  <shorne@gmail.com>

	* MAINTAINERS (CPU Port Maintainers): Add myself for or1k.
	(Write After Approval): Remove myself.

From-SVN: r265996

	* gcc.dg/Walloca-16.c: Ignore conflicting types for built-in
	warnings.
	* gcc.dg/Wrestrict-4.c: Ditto.
	* gcc.dg/Wrestrict-5.c: Ditto.
	* gcc.dg/pr83463.c: Ditto.
	* gcc.dg/torture/pr55890-2.c: Ditto.
	* gcc.dg/torture/pr55890-3.c: Ditto.
	* gcc.dg/torture/pr71816.c: Ditto.

From-SVN: r265995

	PR target/87221
	* config/netbsd-elf.h (NETBSD_STARTFILE_SPEC): Use crtbeginS.o for PIE.
	(NETBSD_ENDFILE_SPEC): Use crtendS.o for PIE.

From-SVN: r265994

2018-11-09  Sandra Loosemore  <sandra@codesourcery.com>

	PR driver/41179
	PR middle-end/65703

	gcc/
	* doc/invoke.texi (Optimize Options): Clarify default behavior
	for -fno-toplevel-reorder, -fno-defer-pop, and -fno-branch-count-reg.

From-SVN: r265993

2018-11-09  Bernd Edlinger  <bernd.edlinger@hotmail.de>

        PR tree-optimization/87940
        * expr.c (string_constant): Don't strip NOPS in subexpressions.
        Fold PLUS_EXPR correctly.

From-SVN: r265992

r265490 allowed the compiler to choose in a more flexible way whether to
use load or load-address-relative-long (LARL) instruction.  When it
chose LARL for literal pool references, the latter ones were rewritten
by pass_s390_early_mach to use UNSPEC_LTREF, which assumes base register
usage, which in turn is not compatible with LARL.  The end result was an
ICE because of unrecognizable insn.

UNSPEC_LTREF and friends are necessary in order to communicate the
dependency on the base register to pass_sched2.  When relative
addressing is used, no base register is necessary, so in such cases the
rewrite must be avoided.

gcc/ChangeLog:

2018-11-09  Ilya Leoshkevich  <iii@linux.ibm.com>

	PR target/87762
	* config/s390/s390.c (s390_safe_relative_long_p): New function.
	(annotate_constant_pool_refs): Skip insns which support
	relative addressing.
	(annotate_constant_pool_refs_1): New helper function.
	(find_constant_pool_ref): Skip insns which support relative
	addression.
	(find_constant_pool_ref_1): New helper function.
	(replace_constant_pool_ref): Skip insns which support
	relative addressing.
	(replace_constant_pool_ref_1): New helper function.
	(s390_mainpool_start): Adapt to the new signature.
	(s390_mainpool_finish): Likewise.
	(s390_chunkify_start): Likewise.
	(s390_chunkify_finish): Likewise.
	(pass_s390_early_mach::execute): Likewise.
	(s390_prologue_plus_offset): Likewise.
	(s390_emit_prologue): Likewise.
	(s390_emit_epilogue): Likewise.

From-SVN: r265991

c/
	* c-parser.c (c_parser_omp_clause_final): Use
	c_parser_expr_no_commas, convert_lvalue_to_rvalue,
	c_objc_common_truthvalue_conversion, c_fully_fold and parentheses
	parsing instead of c_parser_paren_condition.
	(c_parser_omp_clause_if): Use c_parser_expr_no_commas,
	convert_lvalue_to_rvalue, c_objc_common_truthvalue_conversion and
	c_fully_fold instead of c_parser_condition.
	(c_parser_omp_clause_num_threads, c_parser_omp_clause_num_tasks,
	c_parser_omp_clause_grainsize, c_parser_omp_clause_priority,
	c_parser_omp_clause_hint, c_parser_omp_clause_num_teams,
	c_parser_omp_clause_thread_limit, c_parser_omp_clause_linear): Use
	c_parser_expr_no_commas instead of c_parser_expression.
cp/
	* parser.c (cp_parser_omp_clause_final, cp_parser_omp_clause_if): Use
	cp_parser_assignment_expression instead of cp_parser_condition.
	(cp_parser_omp_clause_num_threads, cp_parser_omp_clause_num_tasks,
	cp_parser_omp_clause_grainsize, cp_parser_omp_clause_priority,
	cp_parser_omp_clause_num_teams, cp_parser_omp_clause_thread_limit,
	cp_parser_omp_clause_linear, cp_parser_omp_clause_device): Use
	cp_parser_assignment_expression instead of cp_parser_expression.
	(cp_parser_omp_clause_hint): Likewise.  Formatting fix.
testsuite/
	* c-c++-common/gomp/clauses-5.c: New test.

From-SVN: r265990

	* c-parser.c (c_parser_omp_clause_reduction): Call sorry_at on
	reduction clause with inscan modifier.

	* parser.c (cp_parser_omp_clause_reduction): Call sorry_at on
	reduction clause with inscan modifier.

From-SVN: r265989

c-parser.c (c_parser_omp_requires): Call sorry_at on requires clauses other than atomic_default_mem_order.

	* c-parser.c (c_parser_omp_requires): Call sorry_at on requires
	clauses other than atomic_default_mem_order.

	* parser.c (cp_parser_omp_requires): Call sorry_at on requires
	clauses other than atomic_default_mem_order.

	* c-c++-common/gomp/requires-1.c: Prune not supported yet messages.
	* c-c++-common/gomp/requires-2.c: Likewise.
	* c-c++-common/gomp/requires-4.c: Likewise.

From-SVN: r265988

gimplify.c (gimplify_scan_omp_clauses): Call sorry_at for valid but unsupported lastprivate with conditional modifier.

	* gimplify.c (gimplify_scan_omp_clauses): Call sorry_at for valid
	but unsupported lastprivate with conditional modifier.

	* c-c++-common/gomp/lastprivate-conditional-1.c: New test.
	* c-c++-common/gomp/lastprivate-conditional-2.c: New test.

From-SVN: r265987

	* config/mips/mips.c (mips_loongson_ext2_prefetch_cookie): Handle
	unused argument better.  Add gcc_unreachable to silence warning.

From-SVN: r265986

	* affinity-fmt.c: Include inttypes.h if HAVE_INTTYPES_H.
	(gomp_display_affinity): Use __builtin_choose_expr to handle
	properly handle argument having integral, or pointer or some other
	type.  If inttypes.h is available and PRIx64 is defined, use PRIx64
	with uint64_t type instead of %llx and unsigned long long.

From-SVN: r265985

	PR libstdc++/87787
	* include/bits/stl_uninitialized.h (__relocate_a_1): Do not call
	memmove when there's nothing to copy (and pointers could be null).

From-SVN: r265984

From-SVN: r265983

From-SVN: r265982

    
    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