PR 92846:
ARC gcc generates FDCMP instructions which raises Invalid operation for
signaling NaN only. This causes glibc iseqsig() primitives to fail (in
the current ongoing glibc port to ARC)

So break up the hard float compares into tw categories and for unordered
compares generate the FDCMPF instructions which raised exception for
either NaNs.

With this fix testsuite/gcc.dg/torture/pr52451.c passes for ARC.

Also no regressions for the glibc math testsuite, only 6 additional
passes for test*iseqsig

gcc/
xxxx-xx-xx  Vineet Gupta  <vgupta@synopsys.com>

	* config/arc/arc-modes.def (CC_FPUE): New Mode CC_FPUE which
	helps codegen generate exceptions even for quiet NaN.
	* config/arc/arc.c (arc_init_reg_tables): Handle New CC_FPUE mode.
	(get_arc_condition_code): Likewise.
	(arc_select_cc_mode): LT, LE, GT, GE to use the New CC_FPUE mode.
	* config/arc/arc.h (REVERSE_CONDITION): Handle New CC_FPUE mode.
	* config/arc/predicates.md (proper_comparison_operator): Likewise.
	* config/arc/fpu.md (cmpsf_fpu_trap): New Pattern for CC_FPUE.
	(cmpdf_fpu_trap): Likewise.

Signed-off-by: Vineet Gupta <vgupta@synopsys.com>

From-SVN: r279274

Allow the compiler to use the double-precision compare instructions.

xxxx-xx-xx  Claudiu Zissulescu  <claziss@synopsys.com>

	* config/arc/arc.md (iterator SDF): Check TARGET_FP_DP_BASE.
	(cstoredi4): Use TARGET_HARD_FLOAT.

From-SVN: r279273

	* include/tr1/cctype: Add _GLIBCXX_BEGIN_VERSION_NAMESPACE and
	_GLIBCXX_END_VERSION_NAMESPACE.
	* include/tr1/cfenv: Likewise.
	* include/tr1/cinttypes: Likewise.
	* include/tr1/cstdint: Likewise.
	* include/tr1/cstdio: Likewise.
	* include/tr1/cstdlib: Likewise.
	* include/tr1/cwchar: Likewise.
	* include/tr1/cwctype: Likewise.

From-SVN: r279272

	* src/c++11/random.cc: Include <cctype>.
	(random_devise::_M_init_pretr1): Qualify isdigit call.

From-SVN: r279271

From-SVN: r279270

opts.c (default_options_table): Move -ftree-loop-distribute-patterns entry from -O3 or later section to -O2 or...

	* opts.c (default_options_table): Move -ftree-loop-distribute-patterns
	entry from -O3 or later section to -O2 or later section.
	* doc/invoke.texi (-ftree-loop-distribute-patterns): Mention the
	option is enabled by default at -O2+ rather than just at -O3.

From-SVN: r279267

	PR fortran/92899
	* trans-openmp.c (gfc_trans_omp_atomic): For GFC_OMP_ATOMIC_SWAP,
	do look through conversion on expr2 if any.

	* testsuite/libgomp.fortran/atomic1.f90: New test.

From-SVN: r279266

	PR target/92723
	* tree-vect-patterns.c (vect_recog_rotate_pattern): If dt is not
	vect_internal_def, use oprnd1 as is, without trying to cast it.
	Formatting fix.

	* gcc.dg/vect/pr92723.c: New test.

From-SVN: r279265

2019-12-11  Matthias Klose  <doko@ubuntu.com>

        * configure.ac: Factor out common cases for compare_exclusions.
        * configure: Regenerate.

From-SVN: r279250

gcc/ChangeLog:

	* builtins.c (compute_objsize): Add an argument and set it to offset
	into destination.
	* builtins.h (compute_objsize): Add an argument.
	* tree-object-size.c (addr_object_size): Add an argument and set it
	to offset into destination.
	(compute_builtin_object_size): Same.
	* tree-object-size.h (compute_builtin_object_size): Add an argument.
	* tree-ssa-strlen.c (get_addr_stridx): Add an argument and set it
	to offset into destination.
	(maybe_warn_overflow): New function.
	(handle_store): Call maybe_warn_overflow to issue warnings.

gcc/testsuite/ChangeLog:

	* c-c++-common/Wstringop-overflow-2.c: Adjust text of expected messages.
	* g++.dg/warn/Wstringop-overflow-3.C: Same.
	* gcc.dg/Wstringop-overflow-17.c: Same.

From-SVN: r279248

2019-12-11 Steven G. Kargl  <kargl@gcc.gnu.org>

	PR fortran/92897
	* array.c (gfc_set_array_spec):  Remove invalid assert() triggered
	by invalid Fortran code.
 
2019-12-11 Steven G. Kargl  <kargl@gcc.gnu.org>

	PR fortran/92897
	* gfortran.dg/pr92897.f90: New test.

From-SVN: r279247

ChangeLog:

2019-12-11  Jozef Lawrynowicz  <jozef.l@mittosystems.com>

	* config-ml.in (msp430-*-*): Support --disable-no-exceptions configure
	flag.

gcc/ChangeLog:

2019-12-11  Jozef Lawrynowicz  <jozef.l@mittosystems.com>

	* config/msp430/msp430.h (STARTFILE_SPEC) [!fexceptions]: Use
	crtbegin_no_eh.o if building for the C language.
	[fno-exceptions]: Use crtbegin_no_eh.o if building for any language
	except C.
	(ENDFILE_SPEC) [!fexceptions]: Use crtend_no_eh.o if building for 
	the C language.
	[fno-exceptions]: Use crtend_no_eh.o if building for any language
	except C.
	* config/msp430/t-msp430: Add -fno-exceptions multilib.
	* doc/install.texi: Document --disable-no-exceptions multilib configure
	option.
	* doc/sourcebuild.texi: Document exceptions_enabled effective target.

gcc/testsuite/ChangeLog:

2019-12-11  Jozef Lawrynowicz  <jozef.l@mittosystems.com>

	* lib/gcc-dg.exp: Add dg-prune messages for when exception handling is
	disabled.
	* lib/target-supports.exp (check_effective_target_exceptions_enabled):
	New.

libgcc/ChangeLog:

2019-12-11  Jozef Lawrynowicz  <jozef.l@mittosystems.com>

	* config.host: Add crt{begin,end}_no_eh.o to "extra_parts".
	* config.host (msp430*-*-elf): Add crt{begin,end}_no_eh.o to
	"extra_parts".

From-SVN: r279246

This patch provides a way to clone a pretty_printer.

This is needed so that we can capture text in a label_text and make
layout decisions based on it, using the policy of global_dc's printer,
whilst within a call to diagnostic_show_locus.  We can't print with
the pretty_printer itself within a call to diagnostic_show_locus since
it has partly-buffered content.

gcc/c-family/ChangeLog:
	* c-pretty-print.c (c_pretty_printer::clone): New vfunc
	implementation.
	* c-pretty-print.h (c_pretty_printer::clone): New vfunc decl.

gcc/cp/ChangeLog:
	* cxx-pretty-print.c (cxx_pretty_printer::clone): New vfunc
	implementation.
	* cxx-pretty-print.h (cxx_pretty_printer::clone): New vfunc decl.
	* error.c (cxx_format_postprocessor::clone): New vfunc.

gcc/ChangeLog:
	* pretty-print.c (pretty_printer::pretty_printer): New copy-ctor.
	(pretty_printer::clone): New vfunc implementation.
	* pretty-print.h (format_postprocessor::clone): New pure vfunc
	decl.
	(pretty_printer::pretty_printer): New copy-ctor decl.
	(pretty_printer::clone): New vfunc decl.

From-SVN: r279244

2019-12-11  Jozef Lawrynowicz  <jozef.l@mittosystems.com>

	* crtstuff.c: Declare __dso_handle only if DEFAULT_USE_CXA_ATEXIT is
	true.

From-SVN: r279243

This is used by new selftests in the analyzer patch kit.

gcc/ChangeLog:
	* function-tests.c (selftest::make_fndecl): Make non-static.
	* selftest.h (selftest::make_fndecl): New decl.

From-SVN: r279242

re PR c++/92869 (C++17 wrongly reports aggregate type as not-aggregate (when explicitly defaulted ctors are added))

	PR c++/92869
	* class.c (finish_struct): For C++17 and earlier, check
	type_has_user_provided_or_explicit_constructor rather than
	TYPE_HAS_USER_CONSTRUCTOR whether to set CLASSTYPE_NON_AGGREGATE.

	* g++.dg/cpp0x/aggr3.C: New test.

From-SVN: r279241

Ville pointed out that our paren init of aggregates doesn't work for

  auto a = new A(1, 2, 3);

and I think it should:

A new-expression that creates an object of type T initializes that object
as follows:
...
-- Otherwise, the new-initializer is interpreted according to the
   initialization rules of [dcl.init] for direct-initialization.

so I think it follows that we should perform dcl.init#17.6.2.2.

This doesn't work with new[]; we have:
  error ("parenthesized initializer in array new");

	* init.c (build_new_1): Handle parenthesized initialization of
	aggregates in new-expression.

	* g++.dg/cpp2a/paren-init20.C: New test.

From-SVN: r279240

From-SVN: r279239

The primary change here is to do the CPP_DECLTYPE replacement even when we
get an error, so we don't keep trying and giving the same parse error each
time.  We also commit to the tentative firewall parse more often, leading to
better diagnostics.

	* parser.c (cp_parser_decltype_expr): Don't tentative_firewall here.
	(cp_parser_decltype): Do it here.  Remember a non-tentative error.

From-SVN: r279237

build_new_1 already passes tf_no_cleanup to build_value_init, but in this
testcase we end up calling build_value_init by way of
build_special_member_call, so we need to pass it to that function as well.

	* init.c (build_new_1): Also pass tf_no_cleanup to
	build_special_member_call.

From-SVN: r279236

Missing error-recovery code.  While I was poking at this I also figured we
don't need to iterate over the members of a union.

	* method.c (comp_info::~comp_info): Factor out of...
	(build_comparison_op): Here.  Handle error return from build_new_op.

From-SVN: r279235

	libgomp/
	PR libgomp/92843
	* oacc-mem.c (present_create_copy, delete_copyout): Fix dynamic
	reference counting for structured 'REFCOUNT_INFINITY'.  Add some
	assertions.
	(goacc_insert_pointer, goacc_remove_pointer): Adjust accordingly.
	* testsuite/libgomp.oacc-c-c++-common/pr92843-1.c: New file.
	* testsuite/libgomp.oacc-c-c++-common/clauses-1.c: Fix OpenACC.
	* testsuite/libgomp.oacc-c-c++-common/lib-82.c: Likewise.
	* testsuite/libgomp.oacc-c-c++-common/nested-1.c: Likewise.

From-SVN: r279234

	libgomp/
	* oacc-parallel.c (find_pointer, GOACC_enter_exit_data): Move...
	* oacc-mem.c: ... here.
	(gomp_acc_insert_pointer, gomp_acc_remove_pointer): Rename to
	'goacc_insert_pointer', 'goacc_remove_pointer', and make 'static'.
	* libgomp.h (gomp_acc_insert_pointer, gomp_acc_remove_pointer):
	Remove.
	* libgomp_g.h: Update.

From-SVN: r279233

	libgomp/
	* oacc-parallel.c (GOACC_wait, goacc_wait): Move...
	* oacc-async.c: ... here.
	* oacc-int.h (goacc_wait): Declare.
	* libgomp_g.h: Update

From-SVN: r279232

[PR92854] Add 'libgomp.oacc-c-c++-common/acc_map_data-device_already-*.c', 'libgomp.oacc-c-c++-common/acc_map_data-host_already-*.c'

... to document the status quo.

	libgomp/
	PR libgomp/92854
	* testsuite/libgomp.oacc-c-c++-common/acc_map_data-device_already-1.c:
	New file.
	* testsuite/libgomp.oacc-c-c++-common/acc_map_data-device_already-2.c:
	Likewise.
	* testsuite/libgomp.oacc-c-c++-common/acc_map_data-device_already-3.c:
	Likewise.
	* testsuite/libgomp.oacc-c-c++-common/acc_map_data-host_already-1.c:
	Likewise.
	* testsuite/libgomp.oacc-c-c++-common/acc_map_data-host_already-2.c:
	Likewise.
	* testsuite/libgomp.oacc-c-c++-common/acc_map_data-host_already-3.c:
	Likewise.

From-SVN: r279231

Cases missed in r261813 "Update OpenACC data clause semantics to the 2.5
behavior".

	libgomp/
	* target.c (gomp_load_image_to_device, omp_target_associate_ptr):
	Initialize 'dynamic_refcount' whenever we initialize 'refcount'.

Co-Authored-By: Julian Brown <julian@codesourcery.com>

From-SVN: r279230

We also need unlowered_expr_type when considering associated types for ADL.

	* name-lookup.c: Use unlowered_expr_type.

From-SVN: r279229

Another place we need to look through the VIEW_CONVERT_EXPR we add to make a
use of a class NTTP have const type.

	* pt.c (deducible_expression): Look through VIEW_CONVERT_EXPR.

From-SVN: r279228

gcc/testsuite/ChangeLog:
	* gcc.dg/Wstringop-overflow-26.c: New test.

From-SVN: r279227

2019-12-11  Lewis Hyatt  <lhyatt@gmail.com>

	PR 91853
	* pretty-print.c (pp_quoted_string): Avoid hex-escaping valid
	multibyte input.  Fix off-by-one-bug printing the last byte before a
	hex-escaped output.
	(pp_character): Don't apply line wrapping in the middle of multibyte
	characters.
	(test_utf8): New test.
	(pretty_print_c_tests): Call the new test.

From-SVN: r279226

gcc/testsuite/ChangeLog:
2019-12-11  Andre Vieira  <andre.simoesdiasvieira@arm.com>

	* gcc.dg/vect/vect-epilogues.c: Remove xfail for arm.

From-SVN: r279225

From-SVN: r279220

When a CPU such as cortex-a55 is used with the soft-float ABI variant,
the compiler is incorrectly issuing a warning about a mismatch between
the architecture (generated internally) and the CPU.  This is not
expected or intended.

The problem stems from the fact that we generate (correctly) an
architecture for a soft-float compilation, but then try to compare it
against the one recorded for the CPU.  Normally we strip out the
floating point information before doing that comparison, but we
currently only do that for the features that can be affected by the
-mfpu option.  For a soft-float environment we also need to strip out
any bits that depend on having floating-point present.

So this patch implements that and does a bit of housekeeping at the
same time:

- in arm-cpus.in it is not necessary for a CPU to specify both
  +dotprod and +simd in its architecture specification, since +dotprod
  implies +simd.

- I've refactored the ALL_SIMD fgroup in arm-cpus.in to create a new
  subgroup ALL_SIMD_EXTERNAL and containing the bits that were
  previously added directly to ALL_SIMD.  Similarly, I've added an
  ALL_FPU_EXTERNAL subgroup.

- in arm.c rename fpu_bitlist and all_fpubits to fpu_bitlist_internal
  and all_fpubits_internal for consistency with the fgroup bits which
  they contain.

	* config/arm/arm-cpus.in (ALL_SIMD_EXTERNAL): New fgroup.
	(ALL_SIMD): Use it.
	(ALL_FPU_EXTERNAL): New fgroup.
	(ALL_FP): Use it.
	(cortex-a55, cortex-a75, cortex-a76, cortex-a76ae): Remove redundant
	+simd from architecture specification.
	(cortex-a77, neoverse-n1, cortex-a75.cortex-a55): Likewise.
	* config/arm/arm.c (isa_all_fpubits, fpu_bitlist): Rename to ...
	(isa_all_fpubits_internal, fpu_bitlist_internal): ... these.
	(isa_all_fpbits): New bitmap.
	(arm_option_override): Initialize it.
	(arm_configure_build_target): If the target isa does not have any
	FP enabled, do not warn about mismatches in FP-related feature bits.

From-SVN: r279219

        * omp_lib.h.in: Fix spelling of function declaration
        omp_get_cancell(l)ation.
        * libgomp.texi (acc_is_present, acc_async_test, acc_async_test_all):
        Fix typos.
        * env.c: Fix comment typos.
        * oacc-host.c: Likewise.
        * ordered.c: Likewise.
        * task.c: Likewise.
        * team.c: Likewise.
        * config/gcn/task.c: Likewise.
        * config/gcn/team.c: Likewise.
        * config/nvptx/task.c: Likewise.
        * config/nvptx/team.c: Likewise.
        * plugin/plugin-gcn.c: Likewise.
        * testsuite/libgomp.fortran/jacobi.f: Likewise.
        * testsuite/libgomp.hsa.c/tiling-2.c: Likewise.
        * testsuite/libgomp.oacc-c-c++-common/enter_exit-lib.c: Likewise.

From-SVN: r279218

        * testsuite/libgomp.oacc-fortran/optional-cache.f95: Add 'dg-do run'.
        * testsuite/libgomp.oacc-fortran/optional-reduction.f90: Remove
        unnecessary 'dg-additional-options "-w"'.

From-SVN: r279217

2019-12-11  Stam Markianos-Wright  <stam.markianos-wright@arm.com>

	* real.c (struct arm_bfloat_half_format,
	encode_arm_bfloat_half, decode_arm_bfloat_half): New.
	* real.h (arm_bfloat_half_format): New.

From-SVN: r279216

The columns of the clause locations that are reported for C and C++ are
different and hence we need separate test expectations for both languages.

2019-12-11  Frederik Harwath  <frederik@codesourcery.com>

	PR other/92901
	/gcc/testsuite/
	* c-c++-common/clause-locations.c: Adjust test expectation for C++.

From-SVN: r279215

gcc/
    PR target/92865
    * config/i386/i386-expand.c (ix86_valid_mask_cmp_mode): Enable
    integer mask cmov when available even with TARGET_XOP.

gcc/testsuite
    * gcc.target/i386/pr92865-1.c: New test.

From-SVN: r279214

        * include/pstl/glue_numeric_defs.h: Restore enable_if lost
        during original import of pstl.
        * include/pstl/glue_numeric_impl.h: Likewise.

From-SVN: r279212

From-SVN: r279210