2018-11-26  Jozef Lawrynowicz  <jozef.l@mittosystems.com>

	gcc/ChangeLog:

	* doc/sourcebuild.texi: Document check_effective_target_size20plus.
	Clarify documentation for check_effective_target_size32plus.

	gcc/testsuite/ChangeLog:

	* gcc.c-torture/compile/20151204.c: Add dg-require-effective-target
	size20plus.
	* gcc.dg/pr34225.c: Likewise.
	* gcc.dg/pr40971.c: Likewise.
	* gcc.dg/pr69071.c: Likewise.
	* gcc.dg/tree-ssa/loop-interchange-10.c: Likewise.
	* gcc.dg/tree-ssa/loop-interchange-2.c: Likewise.
	* gcc.dg/tree-ssa/loop-interchange-3.c: Likewise.
	* gcc.dg/tree-ssa/loop-interchange-5.c: Likewise.
	* gcc.dg/tree-ssa/loop-interchange-6.c: Likewise.
	* gcc.dg/tree-ssa/loop-interchange-7.c: Likewise.
	* gcc.dg/tree-ssa/loop-interchange-8.c: Likewise.
	* gcc.dg/tree-ssa/loop-interchange-9.c: Likewise.
	* gcc.dg/tree-ssa/loop-interchange-11.c: Add dg-require-effective-target
	size32plus.
	* gcc.dg/Walloc-size-larger-than-4.c: Likewise.
	* gcc.dg/Walloc-size-larger-than-5.c: Likewise.
	* gcc.dg/Walloc-size-larger-than-6.c: Likewise.
	* gcc.dg/Walloc-size-larger-than-7.c: Likewise.
	* gcc.dg/tree-ssa/loop-interchange-1.c: Likewise.
	* gcc.dg/tree-ssa/loop-interchange-1b.c: Likewise.
	* lib/target-supports.exp (check_effective_target_size20plus): New.
	(check_effective_target_size32plus): Update comment.

From-SVN: r266483

	* testsuite/Makefile.am (AUTOMAKE_OPTIONS): Drop dejagnu.
	(RUNTEST): Don't define.
	(RUNTESTDEFAULTFLAGS): Add.
	(check-DEJAGNU, site.exp, distclean-DEJAGNU): New goals.
	(distclean-am): Depend on distclean-DEJAGNU.
	(check-am): If -j% option is present in MFLAGS and if
	`getconf _NPROCESSORS_ONLN` is more than 8, export OMP_NUM_THREADS=8.
	(.PHONY): Add check-DEJAGNU and distclean-DEJAGNU.
	* testsuite/Makefile.in: Regenerated.

From-SVN: r266482

2018-11-26  Aaron Sawdey  <acsawdey@linux.ibm.com>

	* config/rs6000/rs6000-string.c (expand_cmp_vec_sequence): Rename
	and modify expand_strncmp_vec_sequence.
	(emit_final_compare_vec): Rename and modify emit_final_str_compare_vec.
	(generate_6432_conversion): New function.
	(expand_block_compare): Add support for vsx.
	(expand_block_compare_gpr): New function.
	* config/rs6000/rs6000.opt (rs6000_block_compare_inline_limit): Increase
	default limit to 63 because of more compact vsx code.

From-SVN: r266481

	PR target/88178
	* config/i386/i386.c (dbx_register_map): Use IGNORED_DWARF_REGNUM
	for registers for which no debug information can be generated.
	Use INVALID_REGNUM for non-existent registers.
	(dbx64_register_map): Ditto.
	(svr4_dbx_register_map): Ditto.

testsuite/ChangeLog:

	PR target/88178
	* gcc.target/pr88178.c: New test.

From-SVN: r266480

2018-11-26  Sandra Loosemore  <sandra@codesourcery.com>

	PR c/57182

	gcc/
	* doc/invoke.texi (Optimize Options): Document that
	-freorder-functions also uses "hot" and "cold" attributes.

From-SVN: r266473

	* config/aarch64/aarch64.c (aarch64_mangle_type): Fix typo in comment.

From-SVN: r266472

The mul64 attribute in types.md causes some confusion as it is used to represent
aarch32 instructions that do widening multiplication to generate 32->64 bit results.
But these types are shared with aarch64, which has native 64-bit multiplication operations.

Those are currently not properly represented, which I will fix in follow-up patches.
For now, this patch renames the mul64 attribute to widen_mul64 to more clearly communicate its meaning.

It mechanically updates all users of that name in config/arm/ (there are no users in config/aarch64).
There is thus no change in behaviour.

	* config/arm/types.md (mul64): Rename to...
	(widen_mul64): ... This.
	* config/arm/arm-generic.md: Rename mul64 to widen_mul64.
	* config/arm/cortex-a15.md: Likewise.
	* config/arm/cortex-a5.md: Likewise.
	* config/arm/cortex-a53.md: Likewise.
	* config/arm/cortex-a57.md: Likewise.
	* config/arm/cortex-a7.md: Likewise.
	* config/arm/cortex-m4.md: Likewise.
	* config/arm/exynos-m1.md: Likewise.
	* config/arm/marvell-pj4.md: Likewise.
	* config/arm/xgene1.md: Likewise.

From-SVN: r266471

When throwing an Exception in the Fiber the backtrace generation
crashes.  This happens because backtrace does not func the stack bottom.
Using '.cfi_undefined x30' tells the debug info that the value in the lr
is unknown, which seems to be the nicest way to stop the unwinder.
Setting x30 to 0 is another option, however it still creates one invalid
frame in gdb, so the .cfi variant is used here instead.

Backport from upstream druntime 2.083.

Reviewed-on: https://github.com/dlang/druntime/pull/2308

From-SVN: r266470

2018-11-26  Richard Biener  <rguenther@suse.de>

	PR tree-optimization/88182
	* tree-vect-loop.c (vectorizable_reduction): Pick up single
	correct reduc_def_info.
	* tree-vect-slp.c (vect_analyze_slp_instance): Set
	STMT_VINFO_REDUC_DEF of the first stmt.

	libgomp/
	* testsuite/libgomp.c++/pr88182.C: New testcase.

From-SVN: r266467

gcc/ChangeLog:

2018-11-26  Andreas Krebbel  <krebbel@linux.ibm.com>

	* doc/invoke.texi: Document z14/arch12 -march option.

From-SVN: r266462

2018-11-26  Matthias Klose <doko@ubuntu.com>

        PR ada/88191
        * libgnarl/s-linux__alpha.ads: Define SIGSYS.

From-SVN: r266459

2018-11-26  Matthias Klose  <doko@ubuntu.com>

        * jit.dg/test-long-names.c: Fix build with -Wformat-security.

From-SVN: r266454

	* testsuite/26_numerics/complex/requirements/more_constexpr.cc: Fix
	failure on targets without __float128.

From-SVN: r266450

re PR c/57166 (Manual no longer documents -Wmissing-noreturn alias for -Wsuggest-attribute=noreturn)

2018-11-25  Sandra Loosemore  <sandra@codesourcery.com>

	PR c/57166

	gcc/
	* doc/invoke.texi (Option Summary): Add -Wmissing-noreturn.
	(Warning Options): Likewise.

From-SVN: r266446

2018-11-25  Sandra Loosemore  <sandra@codesourcery.com>

	PR web/79738

	gcc/
	* doc/extend.texi (Common Function Attributes): Clarify that
	functions with "const" attribute can read const global variables.

From-SVN: r266445

From-SVN: r266444

Nothing references these macros.

	* config/rs6000/rs6000.h (OBJECT_PEF, TARGET_MACOS): Delete.

From-SVN: r266441

re PR other/54265 (Documentation of "preferred attribute syntax for Types" contradicts examples in info.)

2018-11-25  Sandra Loosemore  <sandra@codesourcery.com>

	PR other/54265

	gcc/
	* doc/extend.texi (Common Variable Attributes): Use preferred
	placement of type attributes in examples, plus whitespace fixes.
	(Type Attributes): Clarify why placement of attributes
	immediately after struct/union/enum keyword is preferred.
	(Common Type Attributes): Use preferred placement of type
	attributes in examples, plus more whitespace fixes.

From-SVN: r266440

From-SVN: r266439

	gcc/testsuite:
	* lib/target-supports.exp (check_compile): Handle D.
	(check_effective_target_d_runtime): New proc.
	* lib/gdc-dg.exp (gdc-dg-test): Demote link and run tests to
	compile unless d_runtime.
	* gdc.dg/runnable.d: Skip unless d_runtime.
	* gdc.dg/lto/lto.exp: Require d_runtime to run tests.

	gcc:
	* doc/sourcebuild.texi (Effective-Target Keywords, Environment
	attributes): Document d_runtime.

From-SVN: r266438

2018-11-25  Vladimir Makarov  <vmakarov@redhat.com>

	PR bootstrap/88157
	* ira-costs.c (record_operand_costs): Initiate register move cost
	for mode.

From-SVN: r266435

From-SVN: r266434

gcc/d/ChangeLog:

2018-11-24  Iain Buclaw  <ibuclaw@gdcproject.org>

	PR d/87866
	* d-incpath.cc (add_globalpaths): Use lrealpath to get canonical name.
	(add_filepaths): Likewise.

From-SVN: r266429

2018-11-24  Paul Thomas  <pault@gcc.gnu.org>

	PR fortran/88143
	* resolve.c (resolve_variable): Check for associate names with
	NULL target.

2018-11-24  Paul Thomas  <pault@gcc.gnu.org>

	PR fortran/88143
	* gfortran.dg/associate_46.f90: New test.

From-SVN: r266428

	PR fortran/888143
	* resolve.c (resolve_variable): Check for associate names with
	NULL target.

2018-11-24  Paul Thomas  <pault@gcc.gnu.org>

	PR fortran/888143
	* gfortran.dg/associate_46.f90: New test.

From-SVN: r266427

	PR rtl-optimization/87468
	* tree-ssa-threadupdate.c (create_block_for_threading): Clear
	EDGE_IGNORE on all outgoing edges of the duplicate block.

From-SVN: r266426

From-SVN: r266425

2018-11-23  Vladimir Makarov  <vmakarov@redhat.com>

	PR bootstrap/88157
	* ira-costs.c (record_operand_costs): Use bigger hard reg class if
	its mode does not fit to the original class.

From-SVN: r266422

2018-11-23  Vladimir Makarov  <vmakarov@redhat.com>

	* gcc.target/powerpc/pr70669.c: Use unary minus instead of
	addition.

From-SVN: r266421

re PR tree-optimization/87756 (missing unterminated argument warning using address of a constant character)

	PR tree-optimization/87756
	* gcc.dg/builtin-memchr-2.c: Scan the gimple dump instead of
	optimized.
	* gcc.dg/builtin-memchr-3.c: Likewise.

From-SVN: r266420

With multiple threads, using an unprotected static variable to check
whether recursion has occured isn't valid, as one thread might have
modified the variable, thus causing another thread to incorrectly
conclude that recursion has occured.  This patch avoids this problem
by using a thread-specific variable for the recursion check.

Regtested on x86_64-pc-linux-gnu.

libgfortran/ChangeLog:

2018-11-23  Janne Blomqvist  <jb@gcc.gnu.org>

	* runtime/error.c (MAGIC): Remove.
	(recursion_key): New variable.
	(recursion_check): Use thread-specific variable for recursion
	check if threads are active.
	(constructor_recursion_check): New function.
	(destructor_recursion_check): New funcion.

From-SVN: r266419

PR tree-optimization/87756 - missing unterminated argument warning using address of a constant character

gcc/ChangeLog:

	PR tree-optimization/87756
	* expr.c (string_constant): Synthesize a string literal from
	the address of a constant character.
	* tree.c (build_string_literal): Add an argument.
	* tree.h (build_string_literal): Same.

gcc/testsuite/ChangeLog:

	PR tree-optimization/87756
	* gcc.dg/builtin-memchr-2.c: New test.
	* gcc.dg/builtin-memchr-3.c: Same.
	* gcc.dg/warn-sprintf-no-nul-2.c: Same.

From-SVN: r266418

gcc/c/ChangeLog:

	PR testsuite/88098
	* c-typeck.c (convert_arguments): Call builtin_decl_explicit instead.
	(maybe_warn_builtin_no_proto_arg): Handle short enum to int promotion.

gcc/testsuite/ChangeLog:

	PR testsuite/88098
	* gcc.dg/Wbuiltin-declaration-mismatch-4.c: Adjust.
	* gcc.dg/Wbuiltin-declaration-mismatch-5.c: New test.
	* gcc.dg/torture/pr67222.c: Adjust.

From-SVN: r266417

2018-11-23  Edward Smith-Rowland  <3dw4rd@verizon.net>

	Implement P0415 More constexpr for std::complex.
	* include/std/complex (conj(complex<Tp>), norm(complex<Tp>)): Constexpr;
	(real(Tp), imag(Tp)): Constexpr;
	(operator@=(Tp), operator@=(complex<Tp>)): Constexpr;
	(operator@(Tp,complex<Tp>), operator@(complex<Tp>,Tp)
	operator@(complex<Tp>,complex<Tp>)): Constexpr.
	* testsuite/26_numerics/complex/comparison_operators/
	more_constexpr.cc: New test.
	* testsuite/26_numerics/complex/operators/more_constexpr.cc: New test.
	* testsuite/26_numerics/complex/requirements/
	more_constexpr.cc: New test.
	* testsuite/26_numerics/complex/value_operations/
	more_constexpr.cc: New test.
	* testsuite/26_numerics/headers/complex/synopsis.cc:
	Add _GLIBCXX20_CONSTEXPR to applicable operators; Add missing proj().
	* testsuite/26_numerics/headers/complex/synopsis.cc:
	Add _GLIBCXX20_CONSTEXPR to relevant decls.

From-SVN: r266416

2018-11-23  Christoph Muellner <christoph.muellner@theobroma-system.com>

	* config/aarch64/aarch64-cores.def: Define emag.
	* config/aarch64/aarch64-tune.md: Regenerated with emag.
	* config/aarch64/aarch64.c (emag_tunings): New struct.
	* doc/invoke.texi: Document mtune value.

From-SVN: r266415

2018-11-23  Christoph Muellner  <christoph.muellner@theobroma-systems.com>
	    Philipp Tomsich <philipp.tomsich@theobroma-systems.com>

	* config/aarch64/aarch64.c (xgene1_tunings): Optimize Xgene1 tunings
	for GCC 9.

Co-Authored-By: Philipp Tomsich <philipp.tomsich@theobroma-systems.com>

From-SVN: r266414

2018-11-23  Christoph Muellner  <christoph.muellner@theobroma-systems.com>
            Philipp Tomsich <philipp.tomsich@theobroma-systems.com>

	* config/aarch64/aarch64.c (xgene1_tunings): Add Xgene1 specific
	prefetch tunings.

Co-Authored-By: Philipp Tomsich <philipp.tomsich@theobroma-systems.com>

From-SVN: r266413

2018-11-23  Christoph Muellner  <christoph.muellner@theobroma-systems.com>
            Philipp Tomsich <philipp.tomsich@theobroma-systems.com>

	* config/aarch64/aarch64.c (xgene1_addrcost_table): Correct the post modify
	costs.

Co-Authored-By: Philipp Tomsich <philipp.tomsich@theobroma-systems.com>

From-SVN: r266412

2018-11-23  Christoph Muellner <christoph.muellner@theobroma-system.com>

	* config/arm/aarch-cost-tables.h (xgene1_extra_costs): Update the cost table
	for Xgene1.

From-SVN: r266411

2018-11-23  Martin Sebor  <msebor@redhat.com>
	    Jonathan Wakely  <jwakely@redhat.com>

	PR libstdc++/65229
	* python/libstdcxx/v6/printers.py (StdBitsetPrinter): Handle
	exception thrown for std::bitset<0>.
	* testsuite/libstdc++-prettyprinters/simple.cc: Test std::bitset<0>.

Co-Authored-By: Jonathan Wakely <jwakely@redhat.com>

From-SVN: r266409