libphobos/ChangeLog:

	* configure: Regenerate.
	* m4/druntime/libraries.m4 (DRUNTIME_LIBRARIES_NET): Remove
	AC_CACHE_CHECK, simplify by setting LIBS directly.

Adds a new test directive COMPILABLE_MATH_TEST, and support has been
added for it in gdc-convert-test so that they are skipped if phobos is
not present on the target.

Only change in D runtime is a small documentation fix.

Reviewed-on: https://github.com/dlang/druntime/pull/3067
	     https://github.com/dlang/dmd/pull/11060

gcc/testsuite/ChangeLog:

	PR d/89418
	* lib/gdc-utils.exp (gdc-convert-test): Add dg-skip-if for compilable
	tests that depend on the phobos standard library.

Named arguments were being passed around by invisible reference, just
not variadic arguments.  There is a need to de-duplicate the routines
that handle declaration/parameter promotion and reference checking.
However for now, the parameter helper functions have just been renamed
to parameter_reference_p and parameter_type, to make it more clear that
it is the Parameter equivalent to declaration_reference_p and
declaration_type.

On writing the tests, a forward-reference bug was discovered on x86_64
during va_list type semantic.  This was due to fields not having their
parent set-up correctly.

gcc/d/ChangeLog:

	PR d/94777
	* d-builtins.cc (build_frontend_type): Set parent for generated
	fields of built-in types.
	* d-codegen.cc (argument_reference_p): Rename to ...
	(parameter_reference_p): ... this.
	(type_passed_as): Rename to ...
	(parameter_type): ... this.  Make TREE_ADDRESSABLE types restrict.
	(d_build_call): Move handling of non-POD types here from ...
	* d-convert.cc (convert_for_argument): ... here.
	* d-tree.h (argument_reference_p): Rename declaration to ...
	(parameter_reference_p): ... this.
	(type_passed_as): Rename declaration to ...
	(parameter_type): ... this.
	* types.cc (TypeVisitor::visit (TypeFunction *)): Update caller.

gcc/testsuite/ChangeLog:

	PR d/94777
	* gdc.dg/pr94777a.d: New test.
	* gdc.dg/pr94777b.d: New test.

Parameters to user-defined coroutines might be unnamed.
In that case, we must synthesize a name for the coroutine
frame copy.

gcc/cp/ChangeLog:

2020-04-26  Iain Sandoe  <iain@sandoe.co.uk>

	PR c++/94752
	* coroutines.cc (morph_fn_to_coro): Ensure that
	unnamed function params have a usable and distinct
	frame field name.

gcc/testsuite/ChangeLog:

2020-04-26  Iain Sandoe  <iain@sandoe.co.uk>

	PR c++/94752
	* g++.dg/coroutines/pr94752.C: New test.

2020-04-26  Thomas Koenig  <tkoenig@gcc.gnu.org>

	PR fortran/94737
	* gfortran.dg/binding_label_tests_34.f90: New test case.

PR fortran/93956

libphobos/ChangeLog:

	* configure: Regenerate.
	* configure.tgt: Add power*-*-linux* as a supported target, only
	building libdruntime.
	* m4/druntime/cpu.m4 (DRUNTIME_CPU_SOURCES): Add cases for powerpcle
	and powerpc64le target cpus.

Pragma inline affects whether functions are inlined or not.  If at the
declaration level, it affects the functions declared in the block it
controls.  If inside a function, it affects the function it is enclosed
by.  Support has been in the front-end for some time, but the
information was not leveraged by the code generation pass.

gcc/d/ChangeLog:

	* decl.cc (get_symbol_decl): Set DECL_DECLARED_INLINE_P or
	DECL_UNINLINABLE for declarations with pragma(inline).
	* toir.cc (IRVisitor::visit (GccAsmStatement *)): Set ASM_INLINE_P if
	in function decorated with pragma(inline).

AIX pushes a stack frame when debugging is enabled.  With -fcompare-debug
this generates comparison failures because code geneation is different.
This patch disables the stack push for -fcompare-debug that only is used
for internal testing and not for normal debug information generation that
will be consumed by AIX tools.

This patch also removes xfails from testsuite testcases that use
-fcompare-debug and no longer fail on AIX without the stack push difference.

        * config/rs6000/rs6000-logue.c (rs6000_stack_info): Don't push a
        stack frame when debugging and flag_compare_debug is enabled.

testsuite/
        * g++.dg/debug/dwarf2/pr61433.C: Unfail AIX.
        * g++.dg/opt/pr48549.C: Same.
        * g++.dg/opt/pr60002.C: Same.
        * g++.dg/opt/pr80436.C: Same.
        * g++.dg/opt/pr83084.C: Same.
        * g++.dg/other/pr42685.C: Same.
        * gcc.dg/pr41241.c: Same.
        * gcc.dg/pr42629.c: Same.
        * gcc.dg/pr42630.c: Same.
        * gcc.dg/pr42719.c: Same.
        * gcc.dg/pr42728.c: Same.
        * gcc.dg/pr42889.c: Same.
        * gcc.dg/pr42916.c: Same.
        * gcc.dg/pr43084.c: Same.
        * gcc.dg/pr43670.c: Same.
        * gcc.dg/pr44023.c: Same.
        * gcc.dg/pr44971.c: Same.
        * gcc.dg/pr45449.c: Same.
        * gcc.dg/pr46771.c: Same.
        * gcc.dg/pr47684.c: Same.
        * gcc.dg/pr47881.c: Same.
        * gcc.dg/pr48768.c: Same.
        * gcc.dg/pr50017.c: Same.
        * gcc.dg/pr56023.c: Same.
        * gcc.dg/pr64935-1.c: Same.
        * gcc.dg/pr64935-2.c: Same.
        * gcc.dg/pr65521.c: Same.
        * gcc.dg/pr65779.c: Same.
        * gcc.dg/pr65980.c: Same.
        * gcc.dg/pr66688.c: Same.
        * gcc.dg/pr70405.c: Same.
        * gcc.dg/vect/pr49352.c: Same.

ipa-sra-19.c uses a vector type that elicits a non-standard ABI warning
on AIX causing a spurious testsuite failure.

        * gcc.dg/ipa/ipa-sra-19.c: Add -Wno-psabi option on AIX.

spellcheck-options-21.c requires LTO supported on the target.

        * gcc.dg/spellcheck-options-21.c: Require LTO.

AIX 7.2 XCOFF does not support DWARF 5 sections.  Skip the explicit
DWARF 5 tests that emit the new loc_lists and range_lists sections.

        * gcc.dg/debug/dwarf2/pr82718-1.c: Skip on AIX.
        * gcc.dg/debug/dwarf2/pr82718-2.c: Skip on AIX.

Fix a problem with the libffi testsuite using a method to determine the
compiler to use resulting in the tool being different from one the
library has been built with, and causing a catastrophic failure from the
inability to actually choose any compiler at all in a cross-compilation
configuration.

Address this problem by providing a DejaGNU configuration file defining
the compiler to use, via the CC_FOR_TARGET TCL variable, set from $CC by
autoconf, which will have all the required options set for the target
compiler to build executables in the environment configured, removing
failures like:

FAIL: libffi.call/closure_fn0.c -W -Wall -Wno-psabi -O0 (test for excess errors)
Excess errors:
default_target_compile: No compiler to compile with
UNRESOLVED: libffi.call/closure_fn0.c -W -Wall -Wno-psabi -O0 compilation failed to produce executable

and bringing overall test results for the `riscv64-linux-gnu' target
(here with the `x86_64-linux-gnu' host and RISC-V QEMU in the Linux user
emulation mode as the target board) from:

		=== libffi Summary ===

# of unexpected failures	708
# of unresolved testcases	708
# of unsupported tests		30

to:

		=== libffi Summary ===

# of expected passes		1934
# of unsupported tests		28

This is a combined backport of the relevant parts of upstream libffi
changes as follows:

- commit 8308984e479e ("[PATCH] Make sure we're running dejagnu tests
  with the right compiler."),

- commit 2d9b3939751b ("[PATCH] Fix for closures with sunpro compiler"),

- commit 0c3824702d3d ("[PATCH] Always set CC_FOR_TARGET for dejagnu, to
  make the testsuite respect $CC"),

- commit 7d698125b1f0 ("[PATCH] Use the proper C++ compiler to run C++
  tests"),

- commit 6b6df1a7bb37 ("[PATCH] Adds `local.exp` to CLEANFILES"),

- commit 6cf0dea78a5a ("[PATCH] Change CLEANFILES to DISTCLEANFILES")

	libffi/
	* Makefile.am (DISTCLEANFILES): New variable.
	* configure.ac: Produce `local.exp'.
	* Makefile.in: Regenerate.
	* configure: Regenerate.
	* testsuite/Makefile.am (EXTRA_DEJAGNU_SITE_CONFIG): New
	variable.
	* testsuite/Makefile.in: Regenerate.

Since ld is Intel CET enabled on Intel CET enabled host, dlopen fails on
liblto_plugin.so if it isn't Intel CET enabled.  Add GCC_CET_HOST_FLAGS
to cet.m4, use it in libiberty and lto-plugin to always enable Intel
CET in liblto_plugin.so on Intel CET enabled host.

On Linux/x86 host, enable Intel CET by default if assembler and compiler
support Intel CET so that the generated liblto_plugin.so can be used on
both CET and non-CET machines.  It is an error to disable Intel CET in
liblto_plugin.so on Intel CET enabled host.

config/

	PR bootstrap/94739
	* cet.m4 (GCC_CET_HOST_FLAGS): New.

libiberty/

	PR bootstrap/94739
	* Makefile.in (COMPILE.c): Add @CET_HOST_FLAGS@.
	(configure_deps): Add $(srcdir)/../config/cet.m4 and
	$(srcdir)/../config/enable.m4.
	* aclocal.m4: Include ../config/cet.m4 and ../config/enable.m4.
	* configure.ac: Add GCC_CET_HOST_FLAGS(CET_HOST_FLAGS) and
	AC_SUBST(CET_HOST_FLAGS).
	* configure: Regenerated.

lto-plugin/

	PR bootstrap/94739
	* Makefile.am (AM_CFLAGS): Add $(CET_HOST_FLAGS).
	* configure.ac: Add GCC_CET_HOST_FLAGS(CET_HOST_FLAGS) and
	AC_SUBST(CET_HOST_FLAGS).
	* Makefile.in: Regenerated.
	* aclocal.m4: Likewise.
	* configure: Likewise.

Our intrinsics do not handle spans on their return values (yet),
so this creates a temporary for subref array pointers.

2020-04-25  Thomas Koenig  <tkoenig@gcc.gnu.org>

	PR fortran/94578
	* trans-expr.c (arrayfunc_assign_needs_temporary): If the
	LHS is a subref pointer, we also need a temporary.

2020-04-25  Thomas Koenig  <tkoenig@gcc.gnu.org>

	PR fortran/94578
	* gfortran.dg/pointer_assign_14.f90: New test.
	* gfortran.dg/pointer_assign_15.f90: New test.

This just enables a test that can now be run since we've
resolved the PRs blocking it.

2020-04-25  Iain Sandoe  <iain@sandoe.co.uk>

	* g++.dg/coroutines/torture/co-ret-16-simple-control-flow.C:
	Enable test.

2020-04-25  Michael Meissner  <meissner@linux.ibm.com>

	* config/rs6000/linux64.h (PCREL_SUPPORTED_BY_OS): Define to
	enable PC-relative addressing for -mcpu=future.
	* config/rs6000/rs6000-cpus.def (ISA_FUTURE_MASKS_SERVER): Move
	after OTHER_FUTURE_MASKS.  Use OTHER_FUTURE_MASKS.
	* config/rs6000/rs6000.c (PCREL_SUPPORTED_BY_OS): If not defined,
	suppress PC-relative addressing.
	(rs6000_option_override_internal): Split up error messages
	checking for -mprefixed and -mpcrel.  Enable -mpcrel if the target
	system supports it.

P2085 clarified that a defaulted comparison operator must be the first
declaration of the function.  Rejecting that avoids the ICE trying to
compare the noexcept-specifications.

gcc/cp/ChangeLog
2020-04-24  Jason Merrill  <jason@redhat.com>

	PR c++/94583
	* decl.c (redeclaration_error_message): Reject defaulted comparison
	operator that has been previously declared.

This adds a note suggesting to enable concepts whenever 'requires' is parsed as
an invalid type name with concepts disabled.

gcc/cp/ChangeLog:

	* parser.c (cp_parser_diagnose_invalid_type_name): Suggest enabling
	concepts if the invalid identifier is 'requires'.

gcc/testsuite/ChangeLog:

	* g++.dg/concepts/diagnostic11.C: New test.

* New core.math.toPrec templates have been added as an intrinsic.

  Some floating point algorithms, such as Kahan-Babuska-Neumaier
  Summation, require rounding to specific precisions. Rounding to
  precision after every operation, however, loses overall precision in
  the general case and is a runtime performance problem.

  Adding these functions guarantee the rounding at required points in
  the code, and document where in the algorithm the requirement exists.

* Support IBM long double types in core.internal.convert.

* Add missing aliases for 64-bit vectors in core.simd.

* RUNNABLE_PHOBOS_TEST directive has been properly integrated into the
  D2 language testsuite.

Reviewed-on: https://github.com/dlang/druntime/pull/3063
	     https://github.com/dlang/dmd/pull/11054

gcc/d/ChangeLog:

	* intrinsics.cc (expand_intrinsic_toprec): New function.
	(maybe_expand_intrinsic): Handle toPrec intrinsics.
	* intrinsics.def (TOPRECF, TOPREC, TOPRECL): Add toPrec intrinsics.

finish_call_expr already has code to set current_function_returns_abnormally
if a template calls a noreturn function, but on the following testcase it
doesn't call a FUNCTION_DECL, but TEMPLATE_DECL instead, in which case
we didn't check noreturn at all and just assumed it could return.

2020-04-25  Jakub Jelinek  <jakub@redhat.com>

	PR c++/94742
	* semantics.c (finish_call_expr): When looking if all overloads
	are noreturn, use STRIP_TEMPLATE to look through TEMPLATE_DECLs.

	* g++.dg/warn/Wreturn-type-12.C: New test.

cselim: Don't assume it is safe to cstore replace a store to a local variable with unknown offset [PR94734]

As the new testcase shows, it is not safe to assume we can optimize
a conditional store into an automatic non-addressable var, we can do it
only if we can prove that the unconditional load or store actually will
not be outside of the boundaries of the variable.
If the offset and size are constant, we can, but this is already all
checked in !tree_could_trap_p, otherwise we really need to check for
a dominating unconditional store, or for the specific case of automatic
non-addressable variables, it is enough if there is a dominating load
(that is what those 4 testcases have).  tree-ssa-phiopt.c has some
infrastructure for this already, see the add_or_mark_expr method etc.,
but right now it handles only MEM_REFs with SSA_NAME first operand
and some integral offset.  So, I think it can be for GCC11 extended
to handle other memory references, possibly up to just doing
get_inner_reference and hasing based on the base, offset expressions
and bit_offset and bit_size, and have also a special case that for
!TREE_ADDRESSABLE automatic variables it could ignore whether something
is a load or store because the local stack should be always writable.
But it feels way too dangerous to do this this late for GCC10, so this
patch just restricts the optimization to the safe case (where lhs doesn't
trap), and on Richi's request also ignores TREE_ADDRESSABLE bit if
flag_store_data_races, because my understanding the reason for
TREE_ADDRESSABLE check is that we want to avoid introducing
store data races (if address of an automatic var escapes, some other thread
could be accessing it concurrently).

2020-04-25  Jakub Jelinek  <jakub@redhat.com>
	    Richard Biener  <rguenther@suse.de>

	PR tree-optimization/94734
	PR tree-optimization/89430
	* tree-ssa-phiopt.c: Include tree-eh.h.
	(cond_store_replacement): Return false if an automatic variable
	access could trap.  If -fstore-data-races, don't return false
	just because an automatic variable is addressable.

	* gcc.dg/tree-ssa/pr89430-1.c: Add xfail.
	* gcc.dg/tree-ssa/pr89430-2.c: Add xfail.
	* gcc.dg/tree-ssa/pr89430-5.c: Add xfail.
	* gcc.dg/tree-ssa/pr89430-6.c: Add xfail.
	* gcc.c-torture/execute/pr94734.c: New test.

The order of precedence used by the upstream reference compiler for
determining what library to link against is:
- No library if -nophoboslib or -fno-druntime was seen.
- The library passed to -debuglib if -g was also seen.
- The library passed to -defaultlib
- The in-tree libgphobos library.

This aligns the D language driver to follow the same rules.

gcc/d/ChangeLog:

	* d-spec.cc (need_phobos): Remove.
	(lang_specific_driver): Replace need_phobos with phobos_library.
	Reorder -debuglib and -defaultlib to have precedence over libphobos.
	(lang_specific_pre_link): Remove test for need_phobos.

2020-04-24  Andrew Stubbs  <ams@codesourcery.com>

	gcc/
	* config/gcn/gcn-valu.md (add<mode>_zext_dup2_exec): Fix merge
	of high-part.
	(add<mode>_sext_dup2_exec): Likewise.

The PR shows the compiler crashing with -mvsx -mlittle -O0.  This turns
out to be caused by a failure to make of the higher bits in an index
endian conversion.

2020-04-24  Segher Boessenkool  <segher@kernel.crashing.org>

	PR target/94710
	* config/rs6000/vector.md (vec_shr_<mode> for VEC_L): Correct little
	endian byteshift_val calculation.

> I haven't added (yet) checks if the alternate compiler does support these
> options (I think that can be done incrementally), so for now this testing is
> done only if the alternate compiler is not used.

This patch does that, so now when testing against not too old compiler
it can do the -std=c++14 vs. -std=c++17 testing also between under test and
alt compilers.

2020-04-24  Jakub Jelinek  <jakub@redhat.com>

	PR c++/94383
	* g++.dg/compat/struct-layout-1.exp: Use the -std=c++14 vs. -std=c++17
	ABI compatibility testing even with ALT_CXX_UNDER_TEST, as long as
	that compiler accepts -std=c++14 and -std=c++17 options.

This helps avoid spilling 64-bit constant loads to stack by simplifying the
code that LRA sees.

2020-04-24  Andrew Stubbs  <ams@codesourcery.com>

	gcc/
	* config/gcn/gcn.md (*mov<mode>_insn): Only split post-reload.

The vector size chosen here is for V64DImode. The concept of this setting is
not well adapted for GCN, in which the vector size varies with the number of
lanes, not the other way around, but this is ok for now.

2020-04-24  Andrew Stubbs  <ams@codesourcery.com>

	gcc/testsuite/
	* lib/target-supports.exp (available_vector_sizes): Add amdgcn.
	(check_effective_target_vect_cmdline_needed): Disable for amdgcn.
	(check_effective_target_vect_pack_trunc): Add amdgcn.

The LWG issue I created is Tentatively Ready and proposes to declare a
public default constructor, rather than the private one I added
recently.

	* include/experimental/executor (service_already_exists): Make default
	constructor public (LWG 3414).
	* testsuite/experimental/net/execution_context/make_service.cc: Check
	the service_already_exists can be default constructed.

This is a version of the reproducer in the PR, usable on
multiple platforms.

Some target C libraries that aren't recognized as freestanding don't
have filesystem support, so calling tmpnam, fopen/open and
remove/unlink fails to link.

This patch introduces a fileio effective target to the testsuite, and
requires it in the tests that call tmpnam.


for  gcc/testsuite/ChangeLog

	* lib/target-supports.exp (check_effective_target_fileio): New.
	* gcc.c-torture/execute/fprintf-2.c: Require it.
	* gcc.c-torture/execute/printf-2.c: Likewise.
	* gcc.c-torture/execute/user-printf.c: Likewise.

I've had a couple of conversations now in which the shortness
of arm_sve.h was causing confusion, with people thinking that
the types and intrinsics were missing.  It seems worth adding
a comment to explain what's going on.

2020-04-24  Richard Sandiford  <richard.sandiford@arm.com>

gcc/
	* config/aarch64/arm_sve.h: Add a comment.

    As discussed on PR94708, it's unsafe for rtl combine to generate fp
    min/max under -funsafe-math-optimizations, considering NaNs. In
    addition to flag_unsafe_math_optimizations check, we also need to
    do extra mode feature testing here: && !HONOR_NANS (mode)
    && !HONOR_SIGNED_ZEROS (mode)

    2020-04-24  Haijian Zhang <z.zhanghaijian@huawei.com>

    gcc/
	PR rtl-optimization/94708
	* combine.c (simplify_if_then_else): Add check for
	!HONOR_NANS (mode) && !HONOR_SIGNED_ZEROS (mode).
    gcc/testsuite/
	PR fortran/94708
	* gfortran.dg/pr94708.f90: New test.

	* coroutines.cc: Fix compilation error for release checking
	where we miss declaration of ‘coro_body_contains_bind_expr_p’.

The default test timeout duration of the gc compiler is 10 minutes,
and the current default timeout duration of gofrontend is 240 seconds,
which is not long enough for some big tests. This CL changes it to
600s, so that all tests have enough time to complete.

Reviewed-on: https://go-review.googlesource.com/c/gofrontend/+/229657

Like HP/UX, AIX does not support undefined weak, so skip this test
in the testsuite.

	* gcc.dg/torture/pr90020.c: Skip on AIX..