DCE preserves stmts performing abnormal control flow transfer but
currently has an exception for replaceable allocations and cxa_atexit
calls.  That results in a broken CFG since DCE isn't set up to prune
abnormal edges possibly hanging off those.

While we could try to add this handling, the following is the safe
fix at this point and more suitable for backporting.

	PR tree-optimization/118973
	* tree-ssa-dce.cc (mark_stmt_if_obviously_necessary): Calls
	that alter control flow in unpredictable ways need to be
	preserved.

	* g++.dg/torture/pr118973.C: New testcase.

There is a typo in one of the OpenMP gimplification diagnostics messages.
The following patch fixes that and adjusts tests which just copied that
message including typo to dg-warning regexps in 2 tests.

2025-02-24  Jakub Jelinek  <jakub@redhat.com>

	PR middle-end/118993
	* gimplify.cc (gimplify_scan_omp_clauses): Fix diagnostics typo,
	undfined -> undefined.

	* c-c++-common/gomp/allocate-18.c: Adjust dg-warning regex for
	diagnostics typo fix.
	* gfortran.dg/gomp/allocate-clause.f90: Likewise.

On top of the
https://gcc.gnu.org/pipermail/gcc-patches/2024-November/668554.html
https://gcc.gnu.org/pipermail/gcc-patches/2024-November/668699.html
https://gcc.gnu.org/pipermail/gcc-patches/2024-November/668700.html
patches the following patch adds nonnull_if_nonzero attribute(s) to
various builtins instead of or in addition to nonnull attribute.

The patch adjusts builtins (when we have them) corresponding to the APIs
mentioned in the C2Y N3322 paper:
1) strndup and memset get one nonnull_if_nonzero attribute instead of
   nonnull
2) memcpy, memmove, strncpy, memcmp, strncmp get two nonnull_if_nonzero
   attributes instead of nonnull
3) strncat has nonnull without argument changed to nonnull (1) and
   gets one nonnull_if_nonzero for the src argument (maybe it needs
   to be clarified in C2Y, but I really think first argument to strncat
   and wcsncat shouldn't be NULL even for n == 0, because NULL doesn't
   point to NULL terminated string and one can't append anything to it;
   and various implementations in the wild including glibc will crash
   with NULL first argument (x86_64 avx+ doesn't though)

Such changes are done also to the _chk suffixed counterparts of the
builtins.

Furthermore I've changed a couple of builtins for POSIX functions which
aren't covered by ISO C, but I'd expect if/when POSIX incorporates C2Y
it would do the same changes.  In particular

4) strnlen gets one nonnull_if_nonzero instead of nonnull
5) mempcpy and stpncpy get two nonnull_if_nonzero instead of nonnull
   and lose returns_nonnull attribute; this is kind of unfortunate
   but I think in the spirit of N3322 mempcpy (NULL, src, 0) should
   return NULL (i.e. dest + n aka NULL + 0, now valid) and it is hard to
   express returns non-NULL if first argument is non-NULL or third argument
   is non-zero

I'm not really sure about fread/fwrite, N3322 doesn't mention those,
can the first argument be NULL if third argument is 0?  What about
if second argument is 0?  Can the fourth argument be NULL in such cases?

And of course, when not using builtins the glibc headers will affect stuff
too, so we'll need to wait for N3322 implementation there too (possibly
by dropping the nonnull attributes and perhaps conditionally replacing them
with this new one if the compiler supports them).

2025-02-24  Jakub Jelinek  <jakub@redhat.com>

	PR c/117023
gcc/
	* builtin-attrs.def (ATTR_NONNULL_IF_NONZERO): New DEF_ATTR_IDENT.
	(ATTR_NOTHROW_NONNULL_IF12_LEAF, ATTR_NOTHROW_NONNULL_IF13_LEAF,
	ATTR_NOTHROW_NONNULL_IF123_LEAF, ATTR_NOTHROW_NONNULL_IF23_LEAF,
	ATTR_NOTHROW_NONNULL_1_IF23_LEAF, ATTR_PURE_NOTHROW_NONNULL_IF12_LEAF,
	ATTR_PURE_NOTHROW_NONNULL_IF13_LEAF,
	ATTR_PURE_NOTHROW_NONNULL_IF123_LEAF,
	ATTR_WARN_UNUSED_RESULT_NOTHROW_NONNULL_IF12_LEAF,
	ATTR_MALLOC_WARN_UNUSED_RESULT_NOTHROW_NONNULL_IF12_LEAF): New
	DEF_ATTR_TREE_LIST.
	* builtins.def (BUILT_IN_STRNDUP): Use
	ATTR_MALLOC_WARN_UNUSED_RESULT_NOTHROW_NONNULL_IF12_LEAF instead of
	ATTR_MALLOC_WARN_UNUSED_RESULT_NOTHROW_NONNULL_LEAF.
	(BUILT_IN_STRNCAT, BUILT_IN_STRNCAT_CHK): Use
	ATTR_NOTHROW_NONNULL_1_IF23_LEAF instead of ATTR_NOTHROW_NONNULL_LEAF.
	(BUILT_IN_BCOPY, BUILT_IN_MEMCPY, BUILT_IN_MEMCPY_CHK,
	BUILT_IN_MEMMOVE, BUILT_IN_MEMMOVE_CHK,  BUILT_IN_STRNCPY,
	BUILT_IN_STRNCPY_CHK): Use ATTR_NOTHROW_NONNULL_IF123_LEAF instead of
	ATTR_NOTHROW_NONNULL_LEAF.
	(BUILT_IN_MEMPCPY, BUILT_IN_MEMPCPY_CHK, BUILT_IN_STPNCPY,
	BUILT_IN_STPNCPY_CHK): Use ATTR_NOTHROW_NONNULL_IF123_LEAF instead of
	ATTR_RETNONNULL_NOTHROW_LEAF.
	(BUILT_IN_BZERO, BUILT_IN_MEMSET, BUILT_IN_MEMSET_CHK): Use
	ATTR_NOTHROW_NONNULL_IF13_LEAF instead of ATTR_NOTHROW_NONNULL_LEAF.
	(BUILT_IN_BCMP, BUILT_IN_MEMCMP, BUILT_IN_STRNCASECMP,
	BUILT_IN_STRNCMP): Use ATTR_PURE_NOTHROW_NONNULL_IF123_LEAF instead of
	ATTR_PURE_NOTHROW_NONNULL_LEAF.
	(BUILT_IN_STRNLEN): Use ATTR_PURE_NOTHROW_NONNULL_IF12_LEAF instead of
	ATTR_PURE_NOTHROW_NONNULL_LEAF.
	(BUILT_IN_MEMCHR): Use ATTR_PURE_NOTHROW_NONNULL_IF13_LEAF instead of
	ATTR_PURE_NOTHROW_NONNULL_LEAF.
gcc/testsuite/
	* gcc.dg/builtins-nonnull.c (test_memfuncs, test_memfuncs_chk,
	test_strfuncs, test_strfuncs_chk): Add if (n == 0) return; at the
	start of the functions.
	* gcc.dg/Wnonnull-2.c: Copy __builtin_* call statements where
	appropriate 3 times, once with 0 length, once with n and once with
	non-zero constant and expect warning only in the third case.
	Formatting fixes.
	* gcc.dg/Wnonnull-3.c: Copy __builtin_* call statements where
	appropriate 3 times, once with 0 length, once with n and once with
	n guarded with n != 0 and expect warning only in the third case.
	Formatting fixes.
	* gcc.dg/nonnull-3.c (foo): Use 16 instead of 0 in the calls added
	for PR80936.
	* gcc.dg/nonnull-11.c: New test.
	* c-c++-common/ubsan/nonnull-1.c: Don't expect runtime diagnostics
	for the __builtin_memcpy call.
	* gcc.dg/tree-ssa/pr78154.c (f): Add dn argument and return early
	if it is NULL.  Duplicate cases of builtins which have the first
	argument changed from nonnull to nonnull_if_nonzero except stpncpy,
	once with dn as first argument instead of d and once with constant
	non-zero count rather than n.  Disable the stpncpy non-null check.
	* gcc.dg/Wbuiltin-declaration-mismatch-14.c (test_builtin_calls):
	Triplicate the strncmp calls, once with 1 last argument and expect
	warning, once with n last argument and don't expect warning and
	once with 0 last argument and don't expect warning.
	* gcc.dg/Wbuiltin-declaration-mismatch-15.c (test_builtin_calls_fe):
	Likewise.

On top of the
https://gcc.gnu.org/pipermail/gcc-patches/2024-November/668554.html
patch which introduces the nonnull_if_nonzero attribute (because
C2Y is allowing NULL arguments on various calls like memcpy, memset,
strncpy etc. as long as the count is 0) the following patch adds just
limited handling of the attribute in the analyzer.

For nonnull attribute(s) we have the get_nonnull_args helper which
returns a bitmap, for nonnull_if_nonzero a function would need to
return a hash_map or something similar, I think it is better to
handle the attributes one by one.  This patch just handles the
non-zero INTEGER_CST (integer_nonzerop) count arguments, in other places
the above patch uses ranger to some extent, but I'm not familiar enough
with the analyzer to know if one can use the ranger, or should somehow
explain in data structures the conditional nature of the nonnull property,
the argument is nonnull only if some other argument is nonzero.

Also, analyzer uses get_nonnull_args in another spot when entering a frame,
not sure if anything can be done there (note the conditional nonnull
somehow, pass from callers if the argument is nonzero, ...).

Note, the testsuite changes aren't strictly necessary with just
the above and this patch, but will be with a patch I'm going to post
soon.

2025-02-24  Jakub Jelinek  <jakub@redhat.com>

	PR c/117023
gcc/analyzer/
	* sm-malloc.cc (malloc_state_machine::handle_nonnull): New private
	method.
	(malloc_state_machine::on_stmt): Use it for nonnull attribute arguments.
	Handle also nonnull_if_nonzero attributes.
gcc/testsuite/
	* c-c++-common/analyzer/call-summaries-malloc.c
	(test_use_without_check): Pass 4 rather than sz to memset.
	* c-c++-common/analyzer/strncpy-1.c (test_null_dst,
	test_null_src): Pass 42 rather than count to strncpy.

The incorrect cfi directive info breaks stack unwind in try/catch/cxa.

Before patch:
  cm.push	{ra, s0-s2}, -16
  .cfi_offset 1, -12
  .cfi_offset 8, -8
  .cfi_offset 18, -4

After patch:
  cm.push	{ra, s0-s2}, -16
  .cfi_offset 1, -16
  .cfi_offset 8, -12
  .cfi_offset 9, -8
  .cfi_offset 18, -4

gcc/ChangeLog:

	* config/riscv/riscv.cc: Set multi push regs bits.

gcc/testsuite/ChangeLog:
	* gcc.target/riscv/zcmp_push_gpr.c: New test.

Verify that PR tree-optimization/82142 testcase is properly optimized.

	PR tree-optimization/82142
	* gcc.target/i386/pr82142a.c: New file.
	* gcc.target/i386/pr82142b.c: Likewise.

Signed-off-by: H.J. Lu <hjl.tools@gmail.com>

The compiler emits code with init_priority(99) for -fvtable-verify=std
and that creates a section conflict with the uses of init_priority(99)
that I recently added to src/c++20/tzdb.cc.

Change tzdb.cc to use a different priority to avoid the conflict.

libstdc++-v3/ChangeLog:

	PR c++/118981
	* src/c++20/tzdb.cc: Use init_priority(98) instead of
	init_priority(99).

Turn test cases into UNSUPPORTED if running into 'sorry, unimplemented: dynamic stack allocation not supported'

In Subversion r217296 (Git commit e2acc079)
"Testsuite alloca fixes for ptx", effective-target 'alloca' was added to mark
up test cases that run into the nvptx back end's non-support of dynamic stack
allocation.  (Later, nvptx gained conditional support for that in
commit 3861d362
"nvptx: PTX 'alloca' for '-mptx=7.3'+, '-march=sm_52'+ [PR65181]", but on the
other hand, in commit f93a612f
"bpf: liberate R9 for general register allocation", the BPF back end joined
"the list of targets that do not support alloca in target-support.exp".

Manually maintaining the list of test cases requiring effective-target 'alloca'
is notoriously hard, gets out of date quickly: new test cases added to the test
suite may need to be analyzed and annotated, and over time annotations also may
need to be removed, in cases where the compiler learns to optimize out
'alloca'/VLA usage, for example.  This commit replaces (99 % of) the manual
annotations with an automatic scheme: turn test cases into UNSUPPORTED if
running into 'sorry, unimplemented: dynamic stack allocation not supported'.

	gcc/testsuite/
	* lib/target-supports.exp (check_effective_target_alloca):
	Gracefully handle the case that we've not be called (indirectly)
	from 'dg-test'.
	* lib/gcc-dg.exp (proc gcc-dg-prune): Turn
	'sorry, unimplemented: dynamic stack allocation not supported' into
	UNSUPPORTED.
	* c-c++-common/Walloca-larger-than.c: Don't
	'dg-require-effective-target alloca'.
	* c-c++-common/Warray-bounds-9.c: Likewise.
	* c-c++-common/Warray-bounds.c: Likewise.
	* c-c++-common/Wdangling-pointer-2.c: Likewise.
	* c-c++-common/Wdangling-pointer-4.c: Likewise.
	* c-c++-common/Wdangling-pointer-5.c: Likewise.
	* c-c++-common/Wdangling-pointer.c: Likewise.
	* c-c++-common/Wimplicit-fallthrough-7.c: Likewise.
	* c-c++-common/Wsizeof-pointer-memaccess1.c: Likewise.
	* c-c++-common/Wsizeof-pointer-memaccess2.c: Likewise.
	* c-c++-common/Wstringop-truncation.c: Likewise.
	* c-c++-common/Wunused-var-6.c: Likewise.
	* c-c++-common/Wunused-var-8.c: Likewise.
	* c-c++-common/analyzer/alloca-leak.c: Likewise.
	* c-c++-common/analyzer/allocation-size-multiline-2.c: Likewise.
	* c-c++-common/analyzer/allocation-size-multiline-3.c: Likewise.
	* c-c++-common/analyzer/capacity-1.c: Likewise.
	* c-c++-common/analyzer/capacity-3.c: Likewise.
	* c-c++-common/analyzer/imprecise-floating-point-1.c: Likewise.
	* c-c++-common/analyzer/infinite-recursion-alloca.c: Likewise.
	* c-c++-common/analyzer/malloc-callbacks.c: Likewise.
	* c-c++-common/analyzer/malloc-paths-8.c: Likewise.
	* c-c++-common/analyzer/out-of-bounds-5.c: Likewise.
	* c-c++-common/analyzer/out-of-bounds-diagram-11.c: Likewise.
	* c-c++-common/analyzer/uninit-alloca.c: Likewise.
	* c-c++-common/analyzer/write-to-string-literal-5.c: Likewise.
	* c-c++-common/asan/alloca_loop_unpoisoning.c: Likewise.
	* c-c++-common/auto-init-11.c: Likewise.
	* c-c++-common/auto-init-12.c: Likewise.
	* c-c++-common/auto-init-15.c: Likewise.
	* c-c++-common/auto-init-16.c: Likewise.
	* c-c++-common/builtins.c: Likewise.
	* c-c++-common/dwarf2/vla1.c: Likewise.
	* c-c++-common/gomp/pr61486-2.c: Likewise.
	* c-c++-common/torture/builtin-clear-padding-4.c: Likewise.
	* c-c++-common/torture/strub-run3.c: Likewise.
	* c-c++-common/torture/strub-run4.c: Likewise.
	* c-c++-common/torture/strub-run4c.c: Likewise.
	* c-c++-common/torture/strub-run4d.c: Likewise.
	* c-c++-common/torture/strub-run4i.c: Likewise.
	* g++.dg/Walloca1.C: Likewise.
	* g++.dg/Walloca2.C: Likewise.
	* g++.dg/cpp0x/pr70338.C: Likewise.
	* g++.dg/cpp1y/lambda-generic-vla1.C: Likewise.
	* g++.dg/cpp1y/vla10.C: Likewise.
	* g++.dg/cpp1y/vla2.C: Likewise.
	* g++.dg/cpp1y/vla6.C: Likewise.
	* g++.dg/cpp1y/vla8.C: Likewise.
	* g++.dg/debug/debug5.C: Likewise.
	* g++.dg/debug/debug6.C: Likewise.
	* g++.dg/debug/pr54828.C: Likewise.
	* g++.dg/diagnostic/pr70105.C: Likewise.
	* g++.dg/eh/cleanup5.C: Likewise.
	* g++.dg/eh/spbp.C: Likewise.
	* g++.dg/ext/builtin_alloca.C: Likewise.
	* g++.dg/ext/tmplattr9.C: Likewise.
	* g++.dg/ext/vla10.C: Likewise.
	* g++.dg/ext/vla11.C: Likewise.
	* g++.dg/ext/vla12.C: Likewise.
	* g++.dg/ext/vla15.C: Likewise.
	* g++.dg/ext/vla16.C: Likewise.
	* g++.dg/ext/vla17.C: Likewise.
	* g++.dg/ext/vla23.C: Likewise.
	* g++.dg/ext/vla3.C: Likewise.
	* g++.dg/ext/vla6.C: Likewise.
	* g++.dg/ext/vla7.C: Likewise.
	* g++.dg/init/array24.C: Likewise.
	* g++.dg/init/new47.C: Likewise.
	* g++.dg/init/pr55497.C: Likewise.
	* g++.dg/opt/pr78201.C: Likewise.
	* g++.dg/template/vla2.C: Likewise.
	* g++.dg/torture/Wsizeof-pointer-memaccess1.C: Likewise.
	* g++.dg/torture/Wsizeof-pointer-memaccess2.C: Likewise.
	* g++.dg/torture/pr62127.C: Likewise.
	* g++.dg/torture/pr67055.C: Likewise.
	* g++.dg/torture/stackalign/eh-alloca-1.C: Likewise.
	* g++.dg/torture/stackalign/eh-inline-2.C: Likewise.
	* g++.dg/torture/stackalign/eh-vararg-1.C: Likewise.
	* g++.dg/torture/stackalign/eh-vararg-2.C: Likewise.
	* g++.dg/warn/Wplacement-new-size-5.C: Likewise.
	* g++.dg/warn/Wsizeof-pointer-memaccess-1.C: Likewise.
	* g++.dg/warn/Wvla-1.C: Likewise.
	* g++.dg/warn/Wvla-3.C: Likewise.
	* g++.old-deja/g++.ext/array2.C: Likewise.
	* g++.old-deja/g++.ext/constructor.C: Likewise.
	* g++.old-deja/g++.law/builtin1.C: Likewise.
	* g++.old-deja/g++.other/crash12.C: Likewise.
	* g++.old-deja/g++.other/eh3.C: Likewise.
	* g++.old-deja/g++.pt/array6.C: Likewise.
	* g++.old-deja/g++.pt/dynarray.C: Likewise.
	* gcc.c-torture/compile/20000923-1.c: Likewise.
	* gcc.c-torture/compile/20030224-1.c: Likewise.
	* gcc.c-torture/compile/20071108-1.c: Likewise.
	* gcc.c-torture/compile/20071117-1.c: Likewise.
	* gcc.c-torture/compile/900313-1.c: Likewise.
	* gcc.c-torture/compile/parms.c: Likewise.
	* gcc.c-torture/compile/pr17397.c: Likewise.
	* gcc.c-torture/compile/pr35006.c: Likewise.
	* gcc.c-torture/compile/pr42956.c: Likewise.
	* gcc.c-torture/compile/pr51354.c: Likewise.
	* gcc.c-torture/compile/pr52714.c: Likewise.
	* gcc.c-torture/compile/pr55851.c: Likewise.
	* gcc.c-torture/compile/pr77754-1.c: Likewise.
	* gcc.c-torture/compile/pr77754-2.c: Likewise.
	* gcc.c-torture/compile/pr77754-3.c: Likewise.
	* gcc.c-torture/compile/pr77754-4.c: Likewise.
	* gcc.c-torture/compile/pr77754-5.c: Likewise.
	* gcc.c-torture/compile/pr77754-6.c: Likewise.
	* gcc.c-torture/compile/pr78439.c: Likewise.
	* gcc.c-torture/compile/pr79413.c: Likewise.
	* gcc.c-torture/compile/pr82564.c: Likewise.
	* gcc.c-torture/compile/pr87110.c: Likewise.
	* gcc.c-torture/compile/pr99787-1.c: Likewise.
	* gcc.c-torture/compile/vla-const-1.c: Likewise.
	* gcc.c-torture/compile/vla-const-2.c: Likewise.
	* gcc.c-torture/execute/20010209-1.c: Likewise.
	* gcc.c-torture/execute/20020314-1.c: Likewise.
	* gcc.c-torture/execute/20020412-1.c: Likewise.
	* gcc.c-torture/execute/20021113-1.c: Likewise.
	* gcc.c-torture/execute/20040223-1.c: Likewise.
	* gcc.c-torture/execute/20040308-1.c: Likewise.
	* gcc.c-torture/execute/20040811-1.c: Likewise.
	* gcc.c-torture/execute/20070824-1.c: Likewise.
	* gcc.c-torture/execute/20070919-1.c: Likewise.
	* gcc.c-torture/execute/built-in-setjmp.c: Likewise.
	* gcc.c-torture/execute/pr22061-1.c: Likewise.
	* gcc.c-torture/execute/pr43220.c: Likewise.
	* gcc.c-torture/execute/pr82210.c: Likewise.
	* gcc.c-torture/execute/pr86528.c: Likewise.
	* gcc.c-torture/execute/vla-dealloc-1.c: Likewise.
	* gcc.dg/20001012-2.c: Likewise.
	* gcc.dg/20020415-1.c: Likewise.
	* gcc.dg/20030331-2.c: Likewise.
	* gcc.dg/20101010-1.c: Likewise.
	* gcc.dg/Walloca-1.c: Likewise.
	* gcc.dg/Walloca-10.c: Likewise.
	* gcc.dg/Walloca-11.c: Likewise.
	* gcc.dg/Walloca-12.c: Likewise.
	* gcc.dg/Walloca-13.c: Likewise.
	* gcc.dg/Walloca-14.c: Likewise.
	* gcc.dg/Walloca-15.c: Likewise.
	* gcc.dg/Walloca-2.c: Likewise.
	* gcc.dg/Walloca-3.c: Likewise.
	* gcc.dg/Walloca-4.c: Likewise.
	* gcc.dg/Walloca-5.c: Likewise.
	* gcc.dg/Walloca-6.c: Likewise.
	* gcc.dg/Walloca-7.c: Likewise.
	* gcc.dg/Walloca-8.c: Likewise.
	* gcc.dg/Walloca-9.c: Likewise.
	* gcc.dg/Walloca-larger-than-2.c: Likewise.
	* gcc.dg/Walloca-larger-than-3.c: Likewise.
	* gcc.dg/Walloca-larger-than-4.c: Likewise.
	* gcc.dg/Walloca-larger-than.c: Likewise.
	* gcc.dg/Warray-bounds-22.c: Likewise.
	* gcc.dg/Warray-bounds-41.c: Likewise.
	* gcc.dg/Warray-bounds-46.c: Likewise.
	* gcc.dg/Warray-bounds-48-novec.c: Likewise.
	* gcc.dg/Warray-bounds-48.c: Likewise.
	* gcc.dg/Warray-bounds-50.c: Likewise.
	* gcc.dg/Warray-bounds-63.c: Likewise.
	* gcc.dg/Warray-bounds-66.c: Likewise.
	* gcc.dg/Wdangling-pointer.c: Likewise.
	* gcc.dg/Wfree-nonheap-object-2.c: Likewise.
	* gcc.dg/Wfree-nonheap-object.c: Likewise.
	* gcc.dg/Wrestrict-17.c: Likewise.
	* gcc.dg/Wrestrict.c: Likewise.
	* gcc.dg/Wreturn-local-addr-2.c: Likewise.
	* gcc.dg/Wreturn-local-addr-3.c: Likewise.
	* gcc.dg/Wreturn-local-addr-4.c: Likewise.
	* gcc.dg/Wreturn-local-addr-6.c: Likewise.
	* gcc.dg/Wsizeof-pointer-memaccess1.c: Likewise.
	* gcc.dg/Wstack-usage.c: Likewise.
	* gcc.dg/Wstrict-aliasing-bogus-vla-1.c: Likewise.
	* gcc.dg/Wstrict-overflow-27.c: Likewise.
	* gcc.dg/Wstringop-overflow-15.c: Likewise.
	* gcc.dg/Wstringop-overflow-23.c: Likewise.
	* gcc.dg/Wstringop-overflow-25.c: Likewise.
	* gcc.dg/Wstringop-overflow-27.c: Likewise.
	* gcc.dg/Wstringop-overflow-3.c: Likewise.
	* gcc.dg/Wstringop-overflow-39.c: Likewise.
	* gcc.dg/Wstringop-overflow-56.c: Likewise.
	* gcc.dg/Wstringop-overflow-57.c: Likewise.
	* gcc.dg/Wstringop-overflow-67.c: Likewise.
	* gcc.dg/Wstringop-overflow-71.c: Likewise.
	* gcc.dg/Wstringop-truncation-3.c: Likewise.
	* gcc.dg/Wvla-larger-than-1.c: Likewise.
	* gcc.dg/Wvla-larger-than-2.c: Likewise.
	* gcc.dg/Wvla-larger-than-3.c: Likewise.
	* gcc.dg/Wvla-larger-than-4.c: Likewise.
	* gcc.dg/Wvla-larger-than-5.c: Likewise.
	* gcc.dg/analyzer/boxed-malloc-1.c: Likewise.
	* gcc.dg/analyzer/call-summaries-2.c: Likewise.
	* gcc.dg/analyzer/malloc-1.c: Likewise.
	* gcc.dg/analyzer/malloc-reuse.c: Likewise.
	* gcc.dg/analyzer/out-of-bounds-diagram-12.c: Likewise.
	* gcc.dg/analyzer/pr93355-localealias.c: Likewise.
	* gcc.dg/analyzer/putenv-1.c: Likewise.
	* gcc.dg/analyzer/taint-alloc-1.c: Likewise.
	* gcc.dg/analyzer/torture/pr93373.c: Likewise.
	* gcc.dg/analyzer/torture/ubsan-1.c: Likewise.
	* gcc.dg/analyzer/vla-1.c: Likewise.
	* gcc.dg/atomic/stdatomic-vm.c: Likewise.
	* gcc.dg/attr-alloc_size-6.c: Likewise.
	* gcc.dg/attr-alloc_size-7.c: Likewise.
	* gcc.dg/attr-alloc_size-8.c: Likewise.
	* gcc.dg/attr-alloc_size-9.c: Likewise.
	* gcc.dg/attr-noipa.c: Likewise.
	* gcc.dg/auto-init-uninit-36.c: Likewise.
	* gcc.dg/auto-init-uninit-9.c: Likewise.
	* gcc.dg/auto-type-1.c: Likewise.
	* gcc.dg/builtin-alloc-size.c: Likewise.
	* gcc.dg/builtin-dynamic-alloc-size.c: Likewise.
	* gcc.dg/builtin-dynamic-object-size-1.c: Likewise.
	* gcc.dg/builtin-dynamic-object-size-2.c: Likewise.
	* gcc.dg/builtin-dynamic-object-size-3.c: Likewise.
	* gcc.dg/builtin-dynamic-object-size-4.c: Likewise.
	* gcc.dg/builtin-object-size-1.c: Likewise.
	* gcc.dg/builtin-object-size-2.c: Likewise.
	* gcc.dg/builtin-object-size-3.c: Likewise.
	* gcc.dg/builtin-object-size-4.c: Likewise.
	* gcc.dg/builtins-64.c: Likewise.
	* gcc.dg/builtins-68.c: Likewise.
	* gcc.dg/c23-auto-2.c: Likewise.
	* gcc.dg/c99-const-expr-13.c: Likewise.
	* gcc.dg/c99-vla-1.c: Likewise.
	* gcc.dg/fold-alloca-1.c: Likewise.
	* gcc.dg/gomp/pr30494.c: Likewise.
	* gcc.dg/gomp/vla-2.c: Likewise.
	* gcc.dg/gomp/vla-3.c: Likewise.
	* gcc.dg/gomp/vla-4.c: Likewise.
	* gcc.dg/gomp/vla-5.c: Likewise.
	* gcc.dg/graphite/pr99085.c: Likewise.
	* gcc.dg/guality/guality.c: Likewise.
	* gcc.dg/lto/pr80778_0.c: Likewise.
	* gcc.dg/nested-func-10.c: Likewise.
	* gcc.dg/nested-func-12.c: Likewise.
	* gcc.dg/nested-func-13.c: Likewise.
	* gcc.dg/nested-func-14.c: Likewise.
	* gcc.dg/nested-func-15.c: Likewise.
	* gcc.dg/nested-func-16.c: Likewise.
	* gcc.dg/nested-func-17.c: Likewise.
	* gcc.dg/nested-func-9.c: Likewise.
	* gcc.dg/packed-vla.c: Likewise.
	* gcc.dg/pr100225.c: Likewise.
	* gcc.dg/pr25682.c: Likewise.
	* gcc.dg/pr27301.c: Likewise.
	* gcc.dg/pr31507-1.c: Likewise.
	* gcc.dg/pr33238.c: Likewise.
	* gcc.dg/pr41470.c: Likewise.
	* gcc.dg/pr49120.c: Likewise.
	* gcc.dg/pr50764.c: Likewise.
	* gcc.dg/pr51491-2.c: Likewise.
	* gcc.dg/pr51990-2.c: Likewise.
	* gcc.dg/pr51990.c: Likewise.
	* gcc.dg/pr59011.c: Likewise.
	* gcc.dg/pr59523.c: Likewise.
	* gcc.dg/pr61561.c: Likewise.
	* gcc.dg/pr78468.c: Likewise.
	* gcc.dg/pr78902.c: Likewise.
	* gcc.dg/pr79972.c: Likewise.
	* gcc.dg/pr82875.c: Likewise.
	* gcc.dg/pr83844.c: Likewise.
	* gcc.dg/pr84131.c: Likewise.
	* gcc.dg/pr87099.c: Likewise.
	* gcc.dg/pr87320.c: Likewise.
	* gcc.dg/pr89045.c: Likewise.
	* gcc.dg/pr91014.c: Likewise.
	* gcc.dg/pr93986.c: Likewise.
	* gcc.dg/pr98721-1.c: Likewise.
	* gcc.dg/pr99122-2.c: Likewise.
	* gcc.dg/shrink-wrap-alloca.c: Likewise.
	* gcc.dg/sso-14.c: Likewise.
	* gcc.dg/strlenopt-62.c: Likewise.
	* gcc.dg/strlenopt-83.c: Likewise.
	* gcc.dg/strlenopt-84.c: Likewise.
	* gcc.dg/strlenopt-91.c: Likewise.
	* gcc.dg/torture/Wsizeof-pointer-memaccess1.c: Likewise.
	* gcc.dg/torture/calleesave-sse.c: Likewise.
	* gcc.dg/torture/pr48953.c: Likewise.
	* gcc.dg/torture/pr71881.c: Likewise.
	* gcc.dg/torture/pr71901.c: Likewise.
	* gcc.dg/torture/pr78742.c: Likewise.
	* gcc.dg/torture/pr92088-1.c: Likewise.
	* gcc.dg/torture/pr92088-2.c: Likewise.
	* gcc.dg/torture/pr93124.c: Likewise.
	* gcc.dg/torture/pr94479.c: Likewise.
	* gcc.dg/torture/stackalign/alloca-1.c: Likewise.
	* gcc.dg/torture/stackalign/inline-2.c: Likewise.
	* gcc.dg/torture/stackalign/nested-3.c: Likewise.
	* gcc.dg/torture/stackalign/vararg-1.c: Likewise.
	* gcc.dg/torture/stackalign/vararg-2.c: Likewise.
	* gcc.dg/tree-ssa/20030807-2.c: Likewise.
	* gcc.dg/tree-ssa/20080530.c: Likewise.
	* gcc.dg/tree-ssa/alias-37.c: Likewise.
	* gcc.dg/tree-ssa/builtin-sprintf-warn-22.c: Likewise.
	* gcc.dg/tree-ssa/builtin-sprintf-warn-25.c: Likewise.
	* gcc.dg/tree-ssa/builtin-sprintf-warn-3.c: Likewise.
	* gcc.dg/tree-ssa/loop-interchange-15.c: Likewise.
	* gcc.dg/tree-ssa/pr23848-1.c: Likewise.
	* gcc.dg/tree-ssa/pr23848-2.c: Likewise.
	* gcc.dg/tree-ssa/pr23848-3.c: Likewise.
	* gcc.dg/tree-ssa/pr23848-4.c: Likewise.
	* gcc.dg/uninit-32.c: Likewise.
	* gcc.dg/uninit-36.c: Likewise.
	* gcc.dg/uninit-39.c: Likewise.
	* gcc.dg/uninit-41.c: Likewise.
	* gcc.dg/uninit-9-O0.c: Likewise.
	* gcc.dg/uninit-9.c: Likewise.
	* gcc.dg/uninit-pr100250.c: Likewise.
	* gcc.dg/uninit-pr101300.c: Likewise.
	* gcc.dg/uninit-pr101494.c: Likewise.
	* gcc.dg/uninit-pr98583.c: Likewise.
	* gcc.dg/vla-2.c: Likewise.
	* gcc.dg/vla-22.c: Likewise.
	* gcc.dg/vla-24.c: Likewise.
	* gcc.dg/vla-3.c: Likewise.
	* gcc.dg/vla-4.c: Likewise.
	* gcc.dg/vla-stexp-1.c: Likewise.
	* gcc.dg/vla-stexp-2.c: Likewise.
	* gcc.dg/vla-stexp-4.c: Likewise.
	* gcc.dg/vla-stexp-5.c: Likewise.
	* gcc.dg/winline-7.c: Likewise.
	* gcc.target/aarch64/stack-check-alloca-1.c: Likewise.
	* gcc.target/aarch64/stack-check-alloca-10.c: Likewise.
	* gcc.target/aarch64/stack-check-alloca-2.c: Likewise.
	* gcc.target/aarch64/stack-check-alloca-3.c: Likewise.
	* gcc.target/aarch64/stack-check-alloca-4.c: Likewise.
	* gcc.target/aarch64/stack-check-alloca-5.c: Likewise.
	* gcc.target/aarch64/stack-check-alloca-6.c: Likewise.
	* gcc.target/aarch64/stack-check-alloca-7.c: Likewise.
	* gcc.target/aarch64/stack-check-alloca-8.c: Likewise.
	* gcc.target/aarch64/stack-check-alloca-9.c: Likewise.
	* gcc.target/arc/interrupt-6.c: Likewise.
	* gcc.target/i386/pr80969-3.c: Likewise.
	* gcc.target/loongarch/stack-check-alloca-1.c: Likewise.
	* gcc.target/loongarch/stack-check-alloca-2.c: Likewise.
	* gcc.target/loongarch/stack-check-alloca-3.c: Likewise.
	* gcc.target/loongarch/stack-check-alloca-4.c: Likewise.
	* gcc.target/loongarch/stack-check-alloca-5.c: Likewise.
	* gcc.target/loongarch/stack-check-alloca-6.c: Likewise.
	* gcc.target/riscv/stack-check-alloca-1.c: Likewise.
	* gcc.target/riscv/stack-check-alloca-10.c: Likewise.
	* gcc.target/riscv/stack-check-alloca-2.c: Likewise.
	* gcc.target/riscv/stack-check-alloca-3.c: Likewise.
	* gcc.target/riscv/stack-check-alloca-4.c: Likewise.
	* gcc.target/riscv/stack-check-alloca-5.c: Likewise.
	* gcc.target/riscv/stack-check-alloca-6.c: Likewise.
	* gcc.target/riscv/stack-check-alloca-7.c: Likewise.
	* gcc.target/riscv/stack-check-alloca-8.c: Likewise.
	* gcc.target/riscv/stack-check-alloca-9.c: Likewise.
	* gcc.target/sparc/setjmp-1.c: Likewise.
	* gcc.target/x86_64/abi/ms-sysv/ms-sysv.c: Likewise.
	* gcc.c-torture/compile/20001221-1.c: Don't 'dg-skip-if'
	for '! alloca'.
	* gcc.c-torture/compile/20020807-1.c: Likewise.
	* gcc.c-torture/compile/20050801-2.c: Likewise.
	* gcc.c-torture/compile/920428-4.c: Likewise.
	* gcc.c-torture/compile/debugvlafunction-1.c: Likewise.
	* gcc.c-torture/compile/pr41469.c: Likewise.
	* gcc.c-torture/execute/920721-2.c: Likewise.
	* gcc.c-torture/execute/920929-1.c: Likewise.
	* gcc.c-torture/execute/921017-1.c: Likewise.
	* gcc.c-torture/execute/941202-1.c: Likewise.
	* gcc.c-torture/execute/align-nest.c: Likewise.
	* gcc.c-torture/execute/alloca-1.c: Likewise.
	* gcc.c-torture/execute/pr22061-4.c: Likewise.
	* gcc.c-torture/execute/pr36321.c: Likewise.
	* gcc.dg/torture/pr8081.c: Likewise.
	* gcc.dg/analyzer/data-model-1.c: Don't
	'dg-require-effective-target alloca'.  XFAIL relevant
	'dg-warning's for '! alloca'.
	* gcc.dg/uninit-38.c: Likewise.
	* gcc.dg/uninit-pr98578.c: Likewise.
	* gcc.dg/compat/struct-by-value-22_main.c: Comment on
	'dg-require-effective-target alloca'.
	libstdc++-v3/
	* testsuite/lib/prune.exp (proc libstdc++-dg-prune): Turn
	'sorry, unimplemented: dynamic stack allocation not supported' into
	UNSUPPORTED.

Gracefully handle the case that 'gcc/testsuite/lib/gcc-dg.exp:find-dg-do-what' has not been called (indirectly) from 'dg-test'

No change in behavior intended.

	gcc/testsuite/
	* lib/gcc-dg.exp (find-dg-do-what): Gracefully handle the case
	that we've not be called (indirectly) from 'dg-test'.
	* lib/target-supports.exp (check_effective_target_stack_size)
	(check_effective_target_alloca): Catch this.

No change in behavior intended.

	gcc/testsuite/
	* lib/gcc-dg.exp (proc find-dg-do-what): New.
	* lib/target-supports.exp (check_effective_target_stack_size)
	(check_effective_target_alloca): Use it.

... instead of BPF: 'error: BPF does not support dynamic stack allocation', and
nvptx: 'sorry, unimplemented: target cannot support alloca'.

	gcc/
	* config/bpf/bpf.md (define_expand "allocate_stack"): Emit
	'sorry, unimplemented: dynamic stack allocation not supported'.
	* config/nvptx/nvptx.md (define_expand "allocate_stack")
	[!TARGET_SOFT_STACK && !(TARGET_PTX_7_3 && TARGET_SM52)]: Likewise.
	gcc/testsuite/
	* gcc.target/bpf/diag-alloca-1.c: Adjust 'dg-message'.
	* gcc.target/bpf/diag-alloca-2.c: Likewise.
	* gcc.target/nvptx/alloca-1-sm_30.c: Likewise.
	* gcc.target/nvptx/vla-1-sm_30.c: Likewise.
	* lib/target-supports.exp (proc check_effective_target_alloca):
	Adjust comment.

Without this attribute, the building process will fail if GCC is configured
with 'CFLAGS=-DNDEBUG'.

libgomp/ChangeLog:

	* oacc-mem.c (acc_unmap_data, goacc_exit_datum_1, find_group_last,
	goacc_enter_data_internal): Add '__attribute__((unused))'.
	* target.c (gomp_unmap_vars_internal): Likewise.

No conversion is needed because the type of _M_i is __int_type anyway.

libstdc++-v3/ChangeLog:

	* include/bits/atomic_base.h (__atomic_base<_ITp>): Remove
	misleading comment.

In r15-7647-g32457bc25fea80 I added a cast and also changed the type of
the variable, making the cast redundant. This removes the cast.

libstdc++-v3/ChangeLog:

	* src/c++17/floating_from_chars.cc (__floating_from_chars_hex):
	Remove redundant cast.

There's no actual problem with the code here, just a false-positive
warning emitted by some older GCC versions.

gcc/cp/ChangeLog
	* parser.cc (cp_finish_omp_declare_variant): Initialize
	append_args_last.

This bugfix is for a an ICE which occurs if an incompatible parameter
is passed to a procedure.  In particular if a REAL constant actual
parameter is passed to INTEGER formal parameter then M2Range is invoked
to check the type and then M2Range is called to check the value range.

The value range check causes an ICE.  The bug fix introduces range
dependencies on type checks.  If the type check fails an
error message is generated and any future range check cancelled.
These range and type checks are tightly coupled when generating
parameter quad intermediate code.

gcc/m2/ChangeLog:

	PR modula2/118978
	* gm2-compiler/M2Check.mod (checkConstMeta): Add check for
	typed constants.
	* gm2-compiler/M2Quads.mod (BoolFrame): New field RangeDep.
	(CheckProcedureParameters): Call PutRangeDep to associate the
	range dependency with the parameter on the quad stack.
	Pass ParamCheckId to CheckParameter.
	(CheckProcTypeAndProcedure): Add ParamCheckId parameter.
	Pass ParamCheckId to BuildRange.
	(CheckParameter): New parameter ParamCheckId.
	Pass ParamCheckId to CheckProcTypeAndProcedure.
	(CheckParameterOrdinals): Add extra range dep parameter to the
	call of InitParameterRangeCheck.
	(ConvertBooleanToVariable): Initialize RangeDep field.
	(PushBacktok): Ditto.
	(OperandRangeDep): New procedure.
	(PutRangeDep): Ditto.
	* gm2-compiler/M2Range.def (InitTypesParameterCheck): Add new
	parameter depRangeId.
	(InitParameterRangeCheck): Add new parameter parentRangeId.
	(FoldRangeCheck): Add new parameter range.
	* gm2-compiler/M2Range.mod (InitTypesParameterCheck): Add new
	parameter depRangeId.
	(InitParameterRangeCheck): Add new parameter parentRangeId.
	(FoldRangeCheck): Add new parameter range and rewrite.
	(FoldRangeCheckLower): New procedure.
	(Range): New field cancelled.
	New field dependantid.
	(PutRangeParam): Initialize dependantid.
	(PutRangeParamAssign): Ditto.
	(CheckCancelled): New procedure.
	(Cancel): Ditto.
	(IsCancelled): New procedure function.
	(FoldTypeParam): Add depRangeId parameter.
	(WriteRangeCheck): Add dependent debugging.

gcc/testsuite/ChangeLog:

	PR modula2/118978
	* gm2/pim/fail/badparamtype.mod: New test.

Signed-off-by: Gaius Mulley <gaiusmod2@gmail.com>

Append a newline in debug_edge so that we get

(gdb) call debug_edge (e)
edge (bb_9, bb_1)
(gdb)

instead of

(gdb) call debug_edge (e)
edge (bb_9, bb_1)(gdb)

	* sese.cc (debug_edge): Append a newline.

Signed-off-by: H.J. Lu <hjl.tools@gmail.com>

When predicitive commoning moves an invariant ref it makes sure to
not build a MEM_REF with a base that is negatively offsetted from
an object.  But in trying to preserve some transforms it does not
consider association of a constant offset with the address computation
in DR_BASE_ADDRESS leading to exactly this problem again.  This is
arguably a problem in data-ref analysis producing such an out-of-bound
DR_BASE_ADDRESS, but this looks quite involved to fix, so the
following avoids the association in one more case.  This fixes the
testcase while preserving the desired transform in
gcc.dg/tree-ssa/predcom-1.c.

	PR tree-optimization/118954
	* tree-predcom.cc (ref_at_iteration): Make sure to not
	associate the constant offset with DR_BASE_ADDRESS when
	that is an offsetted pointer.

	* gcc.dg/torture/pr118954.c: New testcase.

Alexander pointed out the way to do a dg-bogus in an included header.

	PR tree-optimization/118521
	* g++.dg/torture/pr118521.C: Use dg-bogus properly.

	PR fortran/48958

gcc/fortran/ChangeLog:

	* trans-array.cc (gfc_trans_deferred_array): Initialize the data
	component of non-saved pointers when -fcheck=pointer is set.

gcc/testsuite/ChangeLog:

	* gfortran.dg/pointer_init_13.f90: New test.

libgfortran/ChangeLog:

	PR fortran/107635
	* caf/single.c: Replace alloca with __builtin_alloca.

Improve the internal and debug representation of assumed-rank arrays by
honoring the pointer and allocatable property.

Permit obtaining the array size from only a tree (via the array descriptor)
besides obtaining it from the gfc_expr's array spec. This will be used
by a follow up OpenMP patch for mapping derived types with allocatable
components.

gcc/fortran/ChangeLog:

	* trans-array.cc (gfc_full_array_size): Obtain the rank from
	the array descriptor for assumed rank.
	(gfc_tree_array_size): Likewise; permit expr = NULL to operate
	only the tree.
	(gfc_conv_descriptor_stride_get): Update for added assumed-rank
	array types.
	* trans-openmp.cc (gfc_omp_finish_clause): Likewise.
	* trans-types.cc (gfc_build_array_type, gfc_get_derived_type,
	gfc_get_array_descr_info): Likewise.
	* trans.h (enum gfc_array_kind): Add
	GFC_ARRAY_ASSUMED_RANK_{ALLOCATABLE,POINTER{,_CONT}}.

No functional change intended.

gcc/ChangeLog:
	* diagnostic-core.h: Add comments making clear that these
	functions implicitly use global_dc.

Signed-off-by: David Malcolm <dmalcolm@redhat.com>

gcc/testsuite/ChangeLog:
	* sarif-replay.dg/malformed-json/empty.sarif: New test.

Signed-off-by: David Malcolm <dmalcolm@redhat.com>

Spotted via https://github.com/llvm/llvm-project/issues/128024



gcc/ChangeLog:
	* libsarifreplay.cc
	(sarif_replayer::make_plain_text_within_result_message): Capture
	which json::string was used.  When reporting on unescaped "{" or
	"}" in SARIF message strings, use that string rather than the
	message object, and refer the user to §3.11.5 ("Messages with
	placeholders") rather than §3.11.11 ("arguments").  Ideally we'd
	place the error at the precise character, but that can't be done
	without reworking json-parsing.cc's lexer::lex_string, which is
	too invasive for stage 4.
	(sarif_replayer::get_plain_text_from_mfms): Capture which
	json::string was used.
	(sarif_replayer::lookup_plain_text_within_result_message):
	Likewise.

gcc/testsuite/ChangeLog:
	* sarif-replay.dg/2.1.0-invalid/3.11.11-malformed-placeholder.sarif:
	Rename to...
	* sarif-replay.dg/2.1.0-invalid/3.11.5-unescaped-braces.sarif:
	...this.  Update expected subsection in error message, and
	expected underline in quoted JSON.

Signed-off-by: David Malcolm <dmalcolm@redhat.com>

Binutils 2.24 was released in 2013, so this is more than 11 years old.

gcc:
	PR target/69374
	* doc/install.texi (Specific, aarch64*-*-*): Drop note for
	Binutils pre 2.24.

While looking at PR118956, I noticed that we had some dead code
left over after the removal of the vcond patterns.  The can_invert_p
path is no longer used.

gcc/
	* config/aarch64/aarch64-protos.h (aarch64_expand_sve_vec_cmp_float):
	Remove can_invert_p argument and change return type to void.
	* config/aarch64/aarch64.cc (aarch64_expand_sve_vec_cmp_float):
	Likewise.
	* config/aarch64/aarch64-sve.md (vec_cmp<mode><vpred>): Update call
	accordingly.

This test has been failing since r15-1619-g3b9b8d6cfdf593, which made
IRA prefer a call-clobbered register over a call-preserved register
for mem1 (the second load).  In this particular case, that just
forces the variable p3 to be allocated to a call-preserved register
instead, leading to an extra predicate move from p3 to that register.

However, it was really pot luck that this worked before.  Each argument
is used exactly once, so there isn't an obvious colouring order.
And mem0 and mem1 are passed by indirect reference, so they are not
REG_EQUIV to a stack slot in the way that some memory arguments are.

IIRC, the test was the result of some experimentation, and so I think
the best fix is to rework it to try to make it less sensitive to RA
decisions.  This patch does that by enabling scheduling for the
function and using both memory arguments in the same instruction.
This gets rid of the distracting prologue and epilogue code and
restricts the test to the PCS parts.

gcc/testsuite/
	PR testsuite/116604
	* gcc.target/aarch64/sve/pcs/args_1.c (callee_pred): Enable scheduling
	and use both memory arguments in the same instruction.  Expect no
	prologue and epilogue code.

gcc.target/aarch64/sve/var_stride_2.c started failing after
r15-268-g9dbff9c05520, but the change was an improvement:

@@ -36,13 +36,11 @@
 	b.any	.L9
 	ret
 .L17:
-	ubfiz	x5, x3, 10, 16
-	ubfiz	x4, x2, 10, 16
-	add	x5, x1, x5
-	add	x4, x0, x4
-	cmp	x0, x5
-	ccmp	x1, x4, 2, ls
 	uxtw	x4, w2
+	add	x6, x1, x3, lsl 10
+	cmp	x0, x6
+	add	x5, x0, x4, lsl 10
+	ccmp	x1, x5, 2, ls
 	ccmp	w2, 0, 4, hi
 	beq	.L3
 	cntb	x7

This patch therefore changes the test to expect the new output
for var_stride_2.c.

The changes for var_stride_4.c were a wash, with both versions
having 18(!) arithmetic instructions before the alias check branch.
Both versions sign-extend the n and m arguments as part of this
sequence; the question is whether they do it first or later.

This patch therefore changes the test to accept either the old
or the new code for var_stride_4.c.

gcc/testsuite/
	* gcc.target/aarch64/sve/var_stride_2.c: Expect ADD+LSL.
	* gcc.target/aarch64/sve/var_stride_4.c: Accept LSL or SBFIZ.

When SCCP does final value replacement we end up with unfolded IL like

__result_274 = _150 + 1;
...
__new_finish_106 = __result_274 + 3;  <-- from SCCP
_115 = _150 + 4;
if (__new_finish_106 != _115)

this does only get rectified by the next full folding which happens
in forwprop4 which is after the strlen pass emitting the unwanted
diagnostic.  The following mitigates this case in a similar way as
r15-7472 did for PR118817 - by ensuring we have the IL folded.
This is done by simply folding all immediate uses of the former
PHI def that SCCP replaces.  All other more general approaches have
too much fallout at this point.

	PR tree-optimization/118521
	* tree-scalar-evolution.cc (final_value_replacement_loop):
	Fold uses of the replaced PHI def.

	* g++.dg/torture/pr118521.C: New testcase.

file-cache-lines param was documented as file-cache-files.  This fixes
the typo.

gcc/ChangeLog:

	* doc/invoke.texi: Fix typo file-cache-files ->
	file-cache-lines.

Signed-off-by: Filip Kastl <fkastl@suse.cz>

We started using the __array_rank built-in with r15-1252-g6f0dfa6f1acdf7
but that built-in is buggy in versions of Clang up to and including 19.

libstdc++-v3/ChangeLog:

	PR libstdc++/118559
	* include/std/type_traits (rank, rank_v): Do not use
	__array_rank for Clang 19 and older.

This allows _GLIBCXX_HAS_BUILTIN (or _GLIBCXX_USE_BUILTIN_TRAIT) to be
used as part of a larger logical expression.

libstdc++-v3/ChangeLog:

	* include/bits/c++config (_GLIBCXX_HAS_BUILTIN): Add parentheses.

This makes several functions in <bit> faster to compile, with fewer
expressions to parse and fewer instantiations of __numeric_traits
required.

libstdc++-v3/ChangeLog:

	PR libstdc++/118855
	* include/std/bit (__count_lzero, __count_rzero, __popcount):
	Use type-generic built-ins when available.

These should have been unsigned, but the static assertions are only in
the public std::bit_ceil and std::bit_width functions, not the internal
__bit_ceil and __bit_width ones.

libstdc++-v3/ChangeLog:

	* include/experimental/bits/simd.h (__find_next_valid_abi): Cast
	__bit_ceil argument to unsigned.
	* src/c++17/floating_from_chars.cc (__floating_from_chars_hex):
	Cast __bit_ceil argument to unsigned.
	* src/c++17/memory_resource.cc (big_block): Cast __bit_width
	argument to unsigned.

Since r15-7511-g4e7f74225116e7 we can disable the warnings for using a
reserved priority using a diagnostic pragma. That means we no longer
need to put globals using that attribute into separate files that get
included.

This replaces the two uses of such separate files by moving the variable
definition into the source file and adding the diagnostic pragma.

libstdc++-v3/ChangeLog:

	* src/c++17/memory_resource.cc (default_res): Define here
	instead of including default_resource.h.
	* src/c++98/globals_io.cc (__ioinit): Define here instead of
	including ios_base_init.h.
	* src/c++17/default_resource.h: Removed.
	* src/c++98/ios_base_init.h: Removed.