2021-04-20  Jakub Jelinek  <jakub@redhat.com>

maintainer-scripts/
	* crontab: Snapshots from trunk are now GCC 12 related.
	Add GCC 11 snapshots from the respective branch.
contrib/
	* gcc-changelog/git_update_version.py (active_refs): Add
	releases/gcc-11.

2021-04-20  Jakub Jelinek  <jakub@redhat.com>

	* BASE-VER: Set to 11.0.0.

Depending on whether GCC is configured using --with-mode=zarch or not,
for the 31bit target instructions are generated either for ESA or
z/Architecture.  For the sake of simplicity and robustness test only for
the latter by adding manually option -mzarch.

gcc/testsuite/ChangeLog:

	* gcc.target/s390/zero-scratch-regs-1.c: Force test to run for
	z/Architecture only.

2021-04-20  Paul Thomas  <pault@gcc.gnu.org>

gcc/fortran
	PR fortran/100110
	* trans-decl.c (gfc_get_symbol_decl): Replace test for host
	association with a check that the current and symbol namespaces
	are the same.

gcc/testsuite/
	PR fortran/100110
	* gfortran.dg/pdt_31.f03: New test.
	* gfortran.dg/pdt_26.f03: Reduce 'builtin_malloc' count from 9
	to 8.

Instead of unsafe pointer dereferencing, use memcpy() to read encoded
values from memory.  The function `read_encoded_value' has been updated
to accept a ref parameter, this simplifies handling of the pointer to
memory needing to be read.

libphobos/ChangeLog:

	PR d/98584
	* libdruntime/gcc/deh.d (scanLSDA): Update calls to read_uleb128 and
	read_encoded_value.
	(actionTableLookup): Update calls to read_sleb128 and
	read_encoded_value_with_base.
	* libdruntime/gcc/unwind/pe.d (read_uleb128): Update signature.
	(read_sleb128): Update signature.
	(read_unaligned): New function.
	(read_encoded_value_with_base): Update signature.  Call read_unaligned
	instead of unsafe pointer dereferencing.
	(read_encoded_value): Update signature.

This is an ICE-on-invalid, but I keep seeing it when reducing code so
I'd like to fix it.  We crash on

  template <typename> void forward() {
    concept C = true;
  }

which breaks two requirements:
[temp.concept]/1: A concept is a template ...
[temp.concept]/3: A concept-definition shall inhabit a namespace scope.

This patch adds a test that exercises broken code and fixes the ICE
by checking that a concept-definition is defined at namespace scope.

gcc/cp/ChangeLog:

	PR c++/97536
	* decl.c (grokvardecl): Given an error when a concept is not defined
	at namespace scope.

gcc/testsuite/ChangeLog:

	PR c++/97536
	* g++.dg/concepts/diagnostic16.C: New test.

Limit how many logical expressions GORI will look back through when
evaluating outgoing edge range.

	PR tree-optimization/100081
	* gimple-range-cache.h (ranger_cache): Inherit from gori_compute
	rather than gori_compute_cache.
	* gimple-range-gori.cc (is_gimple_logical_p): Move to top of file.
	(range_def_chain::m_logical_depth): New member.
	(range_def_chain::range_def_chain): Initialize m_logical_depth.
	(range_def_chain::get_def_chain): Don't build defchains through more
	than LOGICAL_LIMIT logical expressions.
	* params.opt (param_ranger_logical_depth): New.

The percentage character was being confused for a format specifier in
pp_format(), whilst the backtick character was confused for the
beginning of a quoted string in expand_d_format().

Both are now properly escaped to avoid the ICE.

gcc/d/ChangeLog:

	PR d/98457
	* d-diagnostic.cc (expand_d_format): Handle escaped backticks.
	(escape_d_format): New funtion.
	(verror): Call escape_d_format on prefixing strings.
	(vdeprecation): Likewise.

gcc/testsuite/ChangeLog:

	PR d/98457
	* gdc.dg/pr98457.d: New test.

Phobos changes:

 - Synchronize C bindings with the latest port fixes in upstream
   druntime.

 - Add Config.stderrPassThrough to std.process (PR98494).

Reviewed-on: https://github.com/dlang/druntime/pull/3448
	     https://github.com/dlang/phobos/pull/7984

libphobos/ChangeLog:

	PR d/98494
	* libdruntime/MERGE: Merge upstream druntime 89f870b7.
	* src/MERGE: Merge upstream phobos e6907ff3e.

libphobos/ChangeLog:

	PR d/98058
	* configure: Regenerate.
	* libdruntime/Makefile.am (DRUNTIME_DSOURCES_DARWIN): Add
	core/sys/darwin/config.d
	* libdruntime/Makefile.in: Regenerate.
	* libdruntime/config/powerpc/switchcontext.S: Implement
	fiber_switchContext for __MACH__.
	* libdruntime/config/x86/switchcontext.S: Likewise.
	* libdruntime/core/sys/darwin/config.d: New file.
	* libdruntime/core/thread/fiber.d (Fiber.getThis): Mark noinline.
	(UnsafeFiberMigration): Define for OSX/X86 and OSX/X86_64.
	* libdruntime/core/thread/osthread.d (callWithStackShell): Add inline
	assembler implementation for X86, X86_64, PPC, and PPC64.
	* libdruntime/core/thread/threadbase.d (ThreadBase.getThis): Mark
	noinline.
	* libdruntime/gcc/deh.d (FuncTable): Remove definition.
	* m4/druntime/os.m4 (DRUNTIME_OS_MINFO_BRACKETING): Check for right
	bracket symbol on darwin* targets.
	* testsuite/libphobos.thread/fiber_guard_page.d: Update test to
	support ucontext-based Fibers.

libphobos/ChangeLog:

	PR d/99794
	* libdruntime/Makefile.am (DRUNTIME_SOURCES_CONFIGURED): Add
	config/mingw/msvc.c on DRUNTIME_OS_MINGW.
	* libdruntime/Makefile.in: Regenerate.
	* libdruntime/config/mingw/msvc.c: New file.
	* libdruntime/config/mingw/switchcontext.S (fiber_switchContext): Fix
	function definition.
	* libdruntime/gcc/deh.d (__gdc_personality_seh0): Fix call to
	_GCC_specific_handler.
	* libdruntime/gcc/gthread.d (__gthread_once_t): Fix definition.
	* libdruntime/gcc/unwind/generic.d (_GCC_specific_handler): Fix
	declaration.
	* libdruntime/rt/dmain2.d (rt_loadLibrary): Remove function.
	(rt_loadLibraryW): Remove function.
	(initLibrary): Remove function.
	(rt_unloadLibrary): Remove function.

libphobos/ChangeLog:

	PR d/99691
	* configure: Regenerate.
	* libdruntime/config/common/threadasm.S: Add __OpenBSD__.
	* libdruntime/gcc/backtrace.d: Import core.sys.openbsd.dlfcn on
	OpenBSD platforms.
	* libdruntime/gcc/sections/elf.d (SharedElf): Define on OpenBSD.
	(linkMapForHandle): Implement for OpenBSD.
	(exeLinkMap): Remove.
	(getDependencies): Adjust dlpi_addr on OpenBSD.
	(handleForName): Implement for OpenBSD.
	(IterateManually): Define on OpenBSD.
	* libdruntime/gcc/sections/package.d (SectionsElf): Define on OpenBSD.
	* m4/druntime/libraries.m4 (DRUNTIME_LIBRARIES_ATOMIC): Test for
	enable_libatomic.
	(DRUNTIME_LIBRARIES_BACKTRACE): Test for enable_libbacktrace.

This is a partial revert of r11-8168.  The overall purpose of the
commit is retained (to fix a bogus warning when -mfpu=<not-auto> is
used in combination with eg -mcpu=neoverse-v1), but it removes the
hunk that changed the subsequent feature bits for features of a
simd/fp unit that cannot be described by -mfpu.  While I still think
that is the correct direction of travel, it's somewhat disruptive and
not appropriate for late stage4.  I'll revisit for gcc-12.

gcc:
	PR target/100067
	* config/arm/arm.c (arm_configure_build_target): Do not strip
	extended FPU/SIMD feature bits from the target ISA when -mfpu
	is specified (partial revert of r11-8168).

The testcase is endianness dependent and works only on little-endian.

2021-04-19  Christophe Lyon  <christophe.lyon@linaro.org>

	PR target/100075
	gcc/testsuite/
	* gcc.target/aarch64/pr100075.c: Add aarch64_little_endian
	effective target.

This reverts a s/column_offset/column/ change in the fix for PR99446.

2021-04-19  Richard Biener  <rguenther@suse.de>

	PR preprocessor/100142
libcpp/
	* line-map.c (linemap_position_for_loc_and_offset): Revert
	unintended s/column_offset/column/ change.

gcc/testsuite/
	* gcc.dg/pr100142.c: New testcase.
	* g++.dg/diagnostic/pr72803.C: Revert last change.

This configuration knob is temporary, and isn't really meant to be exposed to
users.

	gcc/
	* params.opt (-param=openacc-kernels=): Add.
	* omp-oacc-kernels-decompose.cc
	(pass_omp_oacc_kernels_decompose::gate): Use it.
	* doc/invoke.texi (-fopenacc-kernels=@var{mode}): Move...
	(--param): ... here, 'openacc-kernels'.
	gcc/c-family/
	* c.opt (fopenacc-kernels=): Remove.
	gcc/fortran/
	* lang.opt (fopenacc-kernels=): Remove.
	gcc/testsuite/
	* c-c++-common/goacc/if-clause-2.c: '-fopenacc-kernels=[...]' ->
	'--param=openacc-kernels=[...]'.
	* c-c++-common/goacc/kernels-decompose-1.c: Likewise.
	* c-c++-common/goacc/kernels-decompose-2.c: Likewise.
	* c-c++-common/goacc/kernels-decompose-ice-1.c: Likewise.
	* c-c++-common/goacc/kernels-decompose-ice-2.c: Likewise.
	* gfortran.dg/goacc/kernels-decompose-1.f95: Likewise.
	* gfortran.dg/goacc/kernels-decompose-2.f95: Likewise.
	* gfortran.dg/goacc/kernels-tree.f95: Likewise.
	libgomp/
	* testsuite/libgomp.oacc-c-c++-common/declare-vla-kernels-decompose-ice-1.c:
	'-fopenacc-kernels=[...]' -> '--param=openacc-kernels=[...]'.
	* testsuite/libgomp.oacc-c-c++-common/declare-vla-kernels-decompose.c:
	Likewise.
	* testsuite/libgomp.oacc-c-c++-common/kernels-decompose-1.c:
	Likewise.
	* testsuite/libgomp.oacc-fortran/pr94358-1.f90: Likewise.

	* config/abi/post/x86_64-linux-gnu/x32/baseline_symbols.txt:
	Updated.

gcc/ChangeLog:

	PR c/100143
	* gengtype.c (finish_root_table): Align function arguments
	in between declaration and definition.

Since GCC 8, the -freorder-blocks-and-partition pass can split a function
into hot and cold parts, thus generating 2 FDEs for a single function in
DWARF for exception purposes and doing an equivalent trick for Windows SEH.

Now the Windows system unwinder does not support arbitrarily large frames
and there is even a hard limit on the encoding of the CFI, which changes
the stack allocation strategy when it is topped and which must be reflected
everywhere.

gcc/
	* config/i386/winnt.c (i386_pe_seh_cold_init): Properly deal with
	frames larger than the SEH maximum frame size.
gcc/testsuite/
	* gnat.dg/opt92.adb: New test.

If the register named in an existing REG_UNUSED note dies somewhere
between where the note used to be and I3, we should just drop it.

2021-04-21  Segher Boessenkool  <segher@kernel.crashing.org>

	PR rtl-optimization/99927
	* combine.c (distribute_notes) [REG_UNUSED]: If the register already
	is dead, just drop it.

On s390* the only missing part for the mentioned testcases was a load of
a double floating-point zero via a move (in particular for quite old
machines) which was added in commit 46c47420.
Common code implementation is sufficient in order to clear volatile
GPRs, FPRs, and VRs.  Access registers a0 and a1 are nonvolatile and not
cleared.  Therefore, target hook TARGET_ZERO_CALL_USED_REGS is not
implemented for s390*.

Added a target specific test in order to ensure that all call clobbered
GPRs, FPRs, and VRs are zeroed and all call saved registers are kept.

gcc/testsuite/ChangeLog:

	* c-c++-common/zero-scratch-regs-8.c: Enable on s390*.
	* c-c++-common/zero-scratch-regs-9.c: Likewise.
	* c-c++-common/zero-scratch-regs-10.c: Likewise.
	* c-c++-common/zero-scratch-regs-11.c: Likewise.
	* gcc.target/s390/zero-scratch-regs-1.c: New test.

Following up on the fix for PR99914, when testing on MinGW, it was found
not to support weak in the same way as on ELF or Mach-O targets.

So the linkage has been reverted back to COMDAT for that target, however
in order to properly support overriding functions and variables, all
declarations with external linkage must be put on COMDAT.  For this a
new target hook has been added to control the behavior.

gcc/ChangeLog:

	PR d/99914
	* config/i386/winnt-d.c (TARGET_D_TEMPLATES_ALWAYS_COMDAT): Define.
	* doc/tm.texi: Regenerate.
	* doc/tm.texi.in (D language and ABI): Add @hook for
	TARGET_D_TEMPLATES_ALWAYS_COMDAT.

gcc/d/ChangeLog:

	PR d/99914
	* d-target.def (d_templates_always_comdat): New hook.
	* d-tree.h (mark_needed): Remove prototype.
	* decl.cc: Include d-target.h.
	(mark_needed): Rename to...
	(d_mark_needed): ...this.  Make static.
	(set_linkage_for_decl): Put variables in comdat if
	d_templates_always_comdat.

Following on from adding TARGET_D_REGISTER_OS_TARGET_INFO, this adds the
required handlers to implement `__traits(getTargetInfo, "objectFormat")'
for all platforms that have D support files.

Some back-ends (i386, rs6000, and pa) have some awarenes of the what
object format they are compiling for, so new getTargetInfo handlers have
been have added both to those back-ends as well as platform-specific
target files to override the default in the D front-end.

gcc/ChangeLog:

	* config/darwin-d.c (darwin_d_handle_target_object_format): New
	function.
	(darwin_d_register_target_info): New function.
	(TARGET_D_REGISTER_OS_TARGET_INFO): Define.
	* config/dragonfly-d.c (dragonfly_d_handle_target_object_format): New
	function.
	(dragonfly_d_register_target_info): New function.
	(TARGET_D_REGISTER_OS_TARGET_INFO): Define.
	* config/freebsd-d.c (freebsd_d_handle_target_object_format): New
	function.
	(freebsd_d_register_target_info): New function.
	(TARGET_D_REGISTER_OS_TARGET_INFO): Define.
	* config/glibc-d.c (glibc_d_handle_target_object_format): New
	function.
	(glibc_d_register_target_info): New function.
	(TARGET_D_REGISTER_OS_TARGET_INFO): Define.
	* config/i386/i386-d.c (ix86_d_handle_target_object_format): New
	function.
	(ix86_d_register_target_info): Add ix86_d_handle_target_object_format
	as handler for objectFormat key.
	* config/i386/winnt-d.c (winnt_d_handle_target_object_format): New
	function.
	(winnt_d_register_target_info): New function.
	(TARGET_D_REGISTER_OS_TARGET_INFO): Define.
	* config/netbsd-d.c (netbsd_d_handle_target_object_format): New
	function.
	(netbsd_d_register_target_info): New function.
	(TARGET_D_REGISTER_OS_TARGET_INFO): Define.
	* config/openbsd-d.c (openbsd_d_handle_target_object_format): New
	function.
	(openbsd_d_register_target_info): New function.
	(TARGET_D_REGISTER_OS_TARGET_INFO): Define.
	* config/pa/pa-d.c (pa_d_handle_target_object_format): New function.
	(pa_d_register_target_info): Add pa_d_handle_target_object_format as
	handler for objectFormat key.
	* config/rs6000/rs6000-d.c (rs6000_d_handle_target_object_format): New
	function.
	(rs6000_d_register_target_info): Add
	rs6000_d_handle_target_object_format as handler for objectFormat key.
	* config/sol2-d.c (solaris_d_handle_target_object_format): New
	function.
	(solaris_d_register_target_info): New function.
	(TARGET_D_REGISTER_OS_TARGET_INFO): Define.

gcc/d/ChangeLog:

	* d-target.cc (d_handle_target_object_format): New function.
	(d_language_target_info): Add d_handle_target_object_format as handler
	for objectFormat key.
	(Target::getTargetInfo): Continue if handler returned NULL_TREE.

And here is an update for 32-bit powerpc-linux.

2021-04-17  Jakub Jelinek  <jakub@redhat.com>

	* config/abi/post/powerpc-linux-gnu/baseline_symbols.txt: Update.
	* config/abi/post/powerpc64-linux-gnu/32/baseline_symbols.txt: Update.

As we have only one P1 left right now, I think it is the right time
to update abi list files in libstdc++.

Here is an update for x86_64/i?86/s390x/ppc64 linux (aarch64 seems
to be correct already).  For ppc64le it is missing the IEEE128 symver
symbols, but those need further work on the abi checking side.

2021-04-17  Jakub Jelinek  <jakub@redhat.com>

	* config/abi/post/x86_64-linux-gnu/baseline_symbols.txt: Update.
	* config/abi/post/x86_64-linux-gnu/32/baseline_symbols.txt: Update.
	* config/abi/post/i386-linux-gnu/baseline_symbols.txt: Update.
	* config/abi/post/i486-linux-gnu/baseline_symbols.txt: Update.
	* config/abi/post/s390x-linux-gnu/baseline_symbols.txt: Update.
	* config/abi/post/powerpc64-linux-gnu/baseline_symbols.txt: Update.

As mentioned in the PR, SIGSTKSZ is no longer a compile time constant in
glibc 2.34 and later, so
static const uptr kAltStackSize = SIGSTKSZ * 4;
needs dynamic initialization, but is used by a function called indirectly
from .preinit_array and therefore before the variable is constructed.
This results in using 0 size instead and all asan instrumented programs
die with:
==91==ERROR: AddressSanitizer failed to allocate 0x0 (0) bytes of SetAlternateSignalStack (error code: 22)

Here is a cherry-pick from upstream to fix this.

2021-04-17  Jakub Jelinek  <jakub@redhat.com>

	PR sanitizer/100114
	* sanitizer_common/sanitizer_posix_libcdep.cpp: Cherry-pick
	llvm-project revisions 82150606fb11d28813ae6da1101f5bda638165fe
	and b93629dd335ffee2fc4b9b619bf86c3f9e6b0023.

gcc/fortran/ChangeLog:

	PR fortran/100094
	* trans-array.c (gfc_trans_deferred_array): Add code to initialize
	pointers and allocatables with correct TKR parameters.

gcc/testsuite/ChangeLog:

	PR fortran/100094
	* gfortran.dg/PR100094.f90: New test.

The previous change to this testcase missed the fact that the data may
be accessed via an anchor, depending on the optimization level,
leading to false failures.

This patch restricts matching to upper16:lower16 followed by
non-spaces, followed by +4 (in f4) or +320 (in f5).

Using '.*' instead of '[^ \]' would match accross the whole assembly
file, which is not what we want, hence the limitation with spaces.

2021-04-16  Christophe Lyon  <christophe.lyon@linaro.org>

	gcc/testsuite/
	PR target/96770
	* gcc.target/arm/pure-code/pr96770.c: Fix scan-assembler-times
	with movt/movw.

As the following testcase shows, we emit a -Wpsabi note about argument
passing change since GCC 9, but in reality the ABI didn't change.
The alignment is 8 bits in GCC < 9 and 32 bits in GCC >= 9 and
the aarch64_function_arg_alignment returns in that case:
return MIN (MAX (alignment, PARM_BOUNDARY), STACK_BOUNDARY);
so when both the old and new alignment are smaller or equal to PARM_BOUNDARY
(or both are larger than STACK_BOUNDARY, just in theory), even when the new
one is bigger, it doesn't change the argument passing.

So, the following patch changes aarch64_function_arg_alignment to tell the
callers the exact old alignmentm so that they can test it if needed.
The other aarch64_function_arg_alignment callers either check the
alignment for equality against 16-byte alignment (when old alignment was
smaller than that and the new one is 16-byte, we want to emit -Wpsabi
in all the cases) or the va_arg case which I think is ok now too.

2021-04-16  Jakub Jelinek  <jakub@redhat.com>

	PR target/91710
	* config/aarch64/aarch64.c (aarch64_function_arg_alignment): Change
	abi_break argument from bool * to unsigned *, store there the pre-GCC 9
	alignment.
	(aarch64_layout_arg, aarch64_gimplify_va_arg_expr): Adjust callers.
	(aarch64_function_arg_regno_p): Likewise.  Only emit -Wpsabi note if
	the old and new alignment after applying MIN/MAX to it is different.

	* gcc.target/aarch64/pr91710.c: New test.

As mentioned in the PR, building gcc with jit enabled and
--enable-host-shared doesn't work on NetBSD/i?86, as libgccjit.so.0
has text relocations.
The r0-125846-g459260ecf8b420b029601a664cdb21c185268ecb changes
added --enable-host-shared support to various libraries, but didn't
add it to intl/ subdirectory; on Linux it isn't really needed, because
all: all-no
all-no: #nothing
but on other OSes intl/libintl.a is built.

The following patch makes sure it is built with -fPIC when
--enable-host-shared is used.

2021-04-16  Jakub Jelinek  <jakub@redhat.com>

	PR jit/100096
	* configure.ac: Add --enable-host-shared support.
	* Makefile.in: Update copyright.  Add @PICFLAG@ to CFLAGS.
	* configure: Regenerated.

gcc/fortran/ChangeLog:

	PR fortran/100018
	* resolve.c: Add association check before de-referencing pointer.

gcc/testsuite/ChangeLog:

	PR fortran/100018
	* gfortran.dg/PR10018.f90: New test.

The attached testcase generates the following paradoxical subregs when creating
the predicates.

(insn 22 21 23 2 (set (reg:VNx8BI 100)
	(subreg:VNx8BI (reg:VNx2BI 103) 0))
     (expr_list:REG_EQUAL (const_vector:VNx8BI [
		(const_int 1 [0x1])
		(const_int 0 [0])
		(const_int 1 [0x1])
	(const_int 0 [0]) repeated x5
	    ])
	(nil)))

and

(insn 15 14 16 2 (set (reg:VNx8BI 96)
	(subreg:VNx8BI (reg:VNx2BI 99) 0))
     (expr_list:REG_EQUAL (const_vector:VNx8BI [
		(const_int 1 [0x1])
		(const_int 0 [0]) repeated x7
	    ])
	(nil)))

This causes CSE to incorrectly think that the two predicates are equal because
some of the significant bits get ignored due to the subreg.

The attached patch instead makes it so it always looks at all 16-bits of the
predicate, but in turn means we need to generate a TRN that matches the expected
result mode.  In effect in RTL we keep the mode as VNx16BI but during codegen
re-interpret them as the mode the predicate instruction wanted:

(insn 10 9 11 2 (set (reg:VNx8BI 96)
	(subreg:VNx8BI (reg:VNx16BI 99) 0))
     (expr_list:REG_EQUAL (const_vector:VNx8BI [
		(const_int 1 [0x1])
		(const_int 0 [0]) repeated x7
	    ])
	(nil)))

Which needed correction to the TRN pattern.  A new TRN1_CONV unspec is
introduced which allows one to keep the arguments as VNx16BI but encode the
instruction as a type of the last operand.

(insn 9 8 10 2 (set (reg:VNx16BI 99)
	(unspec:VNx16BI [
		(reg:VNx16BI 97)
		(reg:VNx16BI 98)
		(reg:VNx2BI 100)
	    ] UNSPEC_TRN1_CONV))
	(nil))

This allows us remove all the paradoxical subregs and end up with

(insn 16 15 17 2 (set (reg:VNx8BI 101)
	(subreg:VNx8BI (reg:VNx16BI 104) 0))
	(expr_list:REG_EQUAL (const_vector:VNx8BI [
		(const_int 1 [0x1])
		(const_int 0 [0])
		(const_int 1 [0x1])
		(const_int 0 [0]) repeated x5
	    ])
	(nil)))

gcc/ChangeLog:

	PR target/100048
	* config/aarch64/aarch64-sve.md (@aarch64_sve_trn1_conv<mode>): New.
	* config/aarch64/aarch64.c (aarch64_expand_sve_const_pred_trn): Use new
	TRN optab.
	* config/aarch64/iterators.md (UNSPEC_TRN1_CONV): New.

gcc/testsuite/ChangeLog:

	PR target/100048
	* gcc.target/aarch64/sve/pr100048.c: New test.

In r11-6895 handling of empty bases has been fixed such that non-lval
stores of empty classes are not added when the type of *valp doesn't
match the type of the initializer, but as this testcase shows it is
done only when *valp is non-NULL.  If it is NULL, we still shouldn't
add empty class constructors if the type of the constructor elt *valp
points to doesn't match.

2021-04-16  Jakub Jelinek  <jakub@redhat.com>

	PR c++/100111
	* constexpr.c (cxx_eval_store_expression): Don't add CONSTRUCTORs
	for empty classes into *valp when types don't match even when *valp
	is NULL.

	* g++.dg/cpp0x/constexpr-100111.C: New test.

The standard for many Power vector interfaces is now the recently
published Power Vector Intrinsic Programming Reference.  Reference
that document for the relevant interfaces, and remove redundant
information from the GCC user's manual.

2021-04-16  Bill Schmidt  <wschmidt@linux.ibm.com>

gcc/
	* doc/extend.texi (PowerPC AltiVec/VSX Built-in Functions): Revise
	this section and its subsections.

Here we ICE when compiling this code in C++20, because we're trying to
slam a 'typename' after the ->.  The cp_parser_template_id call just
before the spot I'm changing parsed A::template A<int> as a BASELINK
that contains a constructor, but make_typename_type crashes on that.

This patch makes make_typename_type more robust instead of checking
for is_overloaded_fn prior calling it.

gcc/cp/ChangeLog:

	PR c++/99803
	* decl.c (make_typename_type): Give an error and return when
	name is is_overloaded_fn.
	* parser.c (cp_parser_class_name): Don't check is_overloaded_fn
	before calling make_typename_type.

gcc/testsuite/ChangeLog:

	PR c++/99803
	* g++.dg/cpp2a/typename14.C: Don't expect particular error
	messages.
	* g++.dg/cpp2a/typename19.C: New test.

The gimplefe-40.c and gimplefe-41.c test cases require vect_* effective
targets even though they reside in gcc.dg.  By default e.g.
DEFAULT_VECTCFLAGS which is used to add target-specific machine or build
flags is only applied in the ./vect subdirectory.  Move these tests
there.

gcc/testsuite/ChangeLog:

	* gcc.dg/gimplefe-40.c: Moved to...
	* gcc.dg/vect/gimplefe-40.c: ...here.
	* gcc.dg/gimplefe-41.c: Moved to...
	* gcc.dg/vect/gimplefe-41.c: ...here.