[gcc r12-5388] Daily bump.

[gcc r12-5388] Daily bump.

[GCC Administrator]

https://gcc.gnu.org/g:483092d3d996c52a16519261ecf4236ab1a2d99c

commit r12-5388-g483092d3d996c52a16519261ecf4236ab1a2d99c
Author: GCC Administrator <gccadmin@gcc.gnu.org>
Date:   Fri Nov 19 00:16:34 2021 +0000

    Daily bump.

Diff:
---
 gcc/ChangeLog           | 177 ++++++++++++++++++++++++++++++++++++++++++++++++
 gcc/DATESTAMP           |   2 +-
 gcc/c-family/ChangeLog  |   9 +++
 gcc/c/ChangeLog         |   9 +++
 gcc/cp/ChangeLog        |  53 +++++++++++++++
 gcc/d/ChangeLog         |   5 ++
 gcc/fortran/ChangeLog   |   7 ++
 gcc/lto/ChangeLog       |   4 ++
 gcc/testsuite/ChangeLog |  94 +++++++++++++++++++++++++
 libgomp/ChangeLog       |  24 +++++++
 libsanitizer/ChangeLog  |   7 ++
 libstdc++-v3/ChangeLog  |  12 ++++
 12 files changed, 402 insertions(+), 1 deletion(-)

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 5e5a720f071..6059931127e 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,180 @@
+2021-11-18  David Edelsohn  <dje.gcc@gmail.com>
+
+	* config/rs6000/predicates.md (current_file_function_operand):
+	Add flag_semantic_interposition to call of decl_replaceable_p.
+
+2021-11-18  Martin Liska  <mliska@suse.cz>
+
+	* ipa-modref.c (analyze_function): Do not execute the code
+	only if dump_file != NULL.
+
+2021-11-18  Martin Liska  <mliska@suse.cz>
+
+	* ipa-modref.c (analyze_function): Use fnode instead of repeated
+	cgraph_node::get (current_function_decl).
+
+2021-11-18  Jan Hubicka  <hubicka@ucw.cz>
+
+	* cgraph.c (cgraph_node::get_availability): Update call of
+	decl_replaceable_p.
+	(cgraph_node::verify_node): Verify that semantic_interposition flag
+	is set correclty.
+	* cgraph.h: (symtab_node): Add semantic_interposition flag.
+	* cgraphclones.c (set_new_clone_decl_and_node_flags): Clear
+	semantic_interposition flag.
+	* cgraphunit.c (cgraph_node::finalize_function): Set
+	semantic_interposition flag.
+	(cgraph_node::add_new_function): Likewise.
+	(varpool_node::finalize_decl): Likewise.
+	(cgraph_node::create_wrapper): Likewise.
+	* common.opt (fsemantic-interposition): Turn to optimization node.
+	* lto-cgraph.c (lto_output_node): Stream semantic_interposition.
+	(lto_output_varpool_node): Likewise.
+	(input_overwrite_node): Likewise.
+	(input_varpool_node): Likewise.
+	* symtab.c (symtab_node::dump_base): Dump new flag.
+	* varasm.c (decl_replaceable_p): Add semantic_interposition_p
+	parameter.
+	* varasm.h (decl_replaceable_p): Update declaration.
+	* varpool.c (varpool_node::ctor_useable_for_folding_p):
+	Use semantic_interposition flag.
+	(varpool_node::get_availability): Likewise.
+	(varpool_node::create_alias): Copy semantic_interposition flag.
+
+2021-11-18  Jan Hubicka  <hubicka@ucw.cz>
+
+	PR ipa/103266
+	* ipa-modref.c (modref_eaf_analysis::merge_call_lhs_flags): Unused
+	parameter may still be returned.
+	(modref_eaf_analysis::analyze_ssa_name): Call merge_call_lhs_flags
+	even for unused function args.
+
+2021-11-18  Tamar Christina  <tamar.christina@arm.com>
+
+	PR tree-optimization/103311
+	* tree-vect-slp-patterns.c (complex_mul_pattern::matches,
+	complex_fms_pattern::matches): Check for multiplications.
+
+2021-11-18  H.J. Lu  <hjl.tools@gmail.com>
+
+	PR target/102952
+	* config/i386/i386.c (ix86_output_jmp_thunk_or_indirect): Emit
+	CS prefix for -mindirect-branch-cs-prefix.
+	(ix86_output_indirect_branch_via_reg): Likewise.
+	* config/i386/i386.opt: Add -mindirect-branch-cs-prefix.
+	* doc/invoke.texi: Document -mindirect-branch-cs-prefix.
+
+2021-11-18  David Edelsohn  <dje.gcc@gmail.com>
+
+	* config/rs6000/driver-rs6000.c (detect_processor_aix): Add
+	power10.
+
+2021-11-18  Tamar Christina  <tamar.christina@arm.com>
+
+	PR tree-optimization/103253
+	* tree-ssa-math-opts.c (convert_mult_to_fma): Check for LHS.
+
+2021-11-18  Matthias Kretz  <m.kretz@gsi.de>
+
+	* doc/extend.texi: Document __builtin_assoc_barrier.
+
+2021-11-18  Martin Liska  <mliska@suse.cz>
+
+	* cfgexpand.c (pass_expand::execute): Use option directly.
+	* function.c (allocate_struct_function): Likewise.
+	* gimple-low.c (lower_function_body): Likewise.
+	(lower_stmt): Likewise.
+	* gimple-ssa-backprop.c (backprop::prepare_change): Likewise.
+	* ipa-param-manipulation.c (ipa_param_adjustments::modify_call): Likewise.
+	* ipa-split.c (split_function): Likewise.
+	* lto-streamer-in.c (input_function): Likewise.
+	* sese.c (sese_insert_phis_for_liveouts): Likewise.
+	* ssa-iterators.h (num_imm_uses): Likewise.
+	* tree-cfg.c (make_blocks): Likewise.
+	(gimple_merge_blocks): Likewise.
+	* tree-inline.c (tree_function_versioning): Likewise.
+	* tree-loop-distribution.c (generate_loops_for_partition): Likewise.
+	* tree-sra.c (analyze_access_subtree): Likewise.
+	* tree-ssa-dce.c (remove_dead_stmt): Likewise.
+	* tree-ssa-loop-ivopts.c (remove_unused_ivs): Likewise.
+	* tree-ssa-phiopt.c (spaceship_replacement): Likewise.
+	* tree-ssa-reassoc.c (reassoc_remove_stmt): Likewise.
+	* tree-ssa-tail-merge.c (tail_merge_optimize): Likewise.
+	* tree-ssa-threadedge.c (propagate_threaded_block_debug_into): Likewise.
+	* tree-ssa.c (gimple_replace_ssa_lhs): Likewise.
+	(target_for_debug_bind): Likewise.
+	(insert_debug_temp_for_var_def): Likewise.
+	(insert_debug_temps_for_defs): Likewise.
+	(reset_debug_uses): Likewise.
+	* tree-ssanames.c (release_ssa_name_fn): Likewise.
+	* tree-vect-loop-manip.c (adjust_vec_debug_stmts): Likewise.
+	(adjust_debug_stmts): Likewise.
+	(adjust_phi_and_debug_stmts): Likewise.
+	(vect_do_peeling): Likewise.
+	* tree-vect-loop.c (vect_transform_loop_stmt): Likewise.
+	(vect_transform_loop): Likewise.
+	* tree.h (MAY_HAVE_DEBUG_MARKER_STMTS): Remove
+	(MAY_HAVE_DEBUG_BIND_STMTS): Remove.
+	(MAY_HAVE_DEBUG_STMTS): Use options directly.
+
+2021-11-18  Richard Biener  <rguenther@suse.de>
+
+	PR tree-optimization/103277
+	* tree-ssa-dse.c (need_ab_cleanup): New.
+	(dse_optimize_redundant_stores): Adjust.
+	(delete_dead_or_redundant_assignment): Get extra
+	need_ab_cleanup argument and set when abnormal cleanup is
+	needed.
+	(dse_optimize_call): Adjust.
+	(dse_optimize_stmt): Likewise.
+	(pass_dse::execute): Allocate and deallocate need_ab_cleanup.
+	Perform abnormal cleanup.
+	* tree-ssa-dse.h (delete_dead_or_redundant_assignment): Adjust.
+
+2021-11-18  Hongyu Wang  <hongyu.wang@intel.com>
+
+	* config/i386/i386-expand.c (ix86_expand_atomic_fetch_op_loop):
+	Adjust generated cfg to avoid infinite loop.
+
+2021-11-18  konglin1  <lingling.kong@intel.com>
+
+	* config/i386/avx512fp16intrin.h (_mm512_mul_pch): Add alias for _mm512_fmul_pch.
+	(_mm512_mask_mul_pch): Likewise.
+	(_mm512_maskz_mul_pch): Likewise.
+	(_mm512_mul_round_pch): Likewise.
+	(_mm512_mask_mul_round_pch): Likewise.
+	(_mm512_maskz_mul_round_pch): Likewise.
+	(_mm512_cmul_pch): Likewise.
+	(_mm512_mask_cmul_pch): Likewise.
+	(_mm512_maskz_cmul_pch): Likewise.
+	(_mm512_cmul_round_pch): Likewise.
+	(_mm512_mask_cmul_round_pch): Likewise.
+	(_mm512_maskz_cmul_round_pch): Likewise.
+	(_mm_mul_sch): Likewise.
+	(_mm_mask_mul_sch): Likewise.
+	(_mm_maskz_mul_sch): Likewise.
+	(_mm_mul_round_sch): Likewise.
+	(_mm_mask_mul_round_sch): Likewise.
+	(_mm_maskz_mul_round_sch): Likewise.
+	(_mm_cmul_sch): Likewise.
+	(_mm_mask_cmul_sch): Likewise.
+	(_mm_maskz_cmul_sch): Likewise.
+	(_mm_cmul_round_sch): Likewise.
+	(_mm_mask_cmul_round_sch): Likewise.
+	(_mm_maskz_cmul_round_sch): Likewise.
+	* config/i386/avx512fp16vlintrin.h (_mm_mul_pch): Likewise.
+	(_mm_mask_mul_pch): Likewise.
+	(_mm_maskz_mul_pch): Likewise.
+	(_mm256_mul_pch): Likewise.
+	(_mm256_mask_mul_pch): Likewise.
+	(_mm256_maskz_mul_pch): Likewise.
+	(_mm_cmul_pch): Likewise.
+	(_mm_mask_cmul_pch): Likewise.
+	(_mm_maskz_cmul_pch): Likewise.
+	(_mm256_cmul_pch): Likewise.
+	(_mm256_mask_cmul_pch): Likewise.
+	(_mm256_maskz_cmul_pch): Likewise.
+
 2021-11-17  Andrew Pinski  <apinski@marvell.com>
 
 	PR tree-optimization/103228
diff --git a/gcc/DATESTAMP b/gcc/DATESTAMP
index 15171a25738..f09aab359f4 100644
--- a/gcc/DATESTAMP
+++ b/gcc/DATESTAMP
@@ -1 +1 @@
-20211118
+20211119
diff --git a/gcc/c-family/ChangeLog b/gcc/c-family/ChangeLog
index 21f153e87e6..1c54782f630 100644
--- a/gcc/c-family/ChangeLog
+++ b/gcc/c-family/ChangeLog
@@ -1,3 +1,12 @@
+2021-11-18  Matthias Kretz  <m.kretz@gsi.de>
+
+	* c-common.c (c_common_reswords): Add __builtin_assoc_barrier.
+	* c-common.h (enum rid): Add RID_BUILTIN_ASSOC_BARRIER.
+
+2021-11-18  Martin Liska  <mliska@suse.cz>
+
+	* c-gimplify.c (genericize_c_loop): Use option directly.
+
 2021-11-17  Martin Uecker  <uecker@gcc.gnu.org>
 
 	PR c/91038
diff --git a/gcc/c/ChangeLog b/gcc/c/ChangeLog
index 8dcd6be5fb5..2728c59918e 100644
--- a/gcc/c/ChangeLog
+++ b/gcc/c/ChangeLog
@@ -1,3 +1,12 @@
+2021-11-18  Matthias Kretz  <m.kretz@gsi.de>
+
+	* c-decl.c (names_builtin_p): Handle RID_BUILTIN_ASSOC_BARRIER.
+	* c-parser.c (c_parser_postfix_expression): Likewise.
+
+2021-11-18  Martin Liska  <mliska@suse.cz>
+
+	* c-parser.c (add_debug_begin_stmt): Use option directly.
+
 2021-11-17  Martin Sebor  <msebor@redhat.com>
 
 	PR c/101702
diff --git a/gcc/cp/ChangeLog b/gcc/cp/ChangeLog
index ac52e3b4a69..f07ae26403c 100644
--- a/gcc/cp/ChangeLog
+++ b/gcc/cp/ChangeLog
@@ -1,3 +1,56 @@
+2021-11-18  Marek Polacek  <polacek@redhat.com>
+
+	PR c++/103049
+	* semantics.c (finish_compound_literal): Accept C++23 auto{x}.
+	* typeck2.c (build_functional_cast_1): Accept C++23 auto(x).
+
+2021-11-18  Patrick Palka  <ppalka@redhat.com>
+
+	* pt.c (tsubst_copy_and_build) <case CALL_EXPR>: Disable the
+	-fpermissive fallback for C++20 template-id ADL, but keep the
+	diagnostic.
+
+2021-11-18  Jan Hubicka  <hubicka@ucw.cz>
+
+	* decl.c (finish_function): Update use of decl_replaceable_p.
+
+2021-11-18  Patrick Palka  <ppalka@redhat.com>
+
+	PR c++/99911
+	* pt.c (tsubst_copy_and_build) <case CALL_EXPR>: Don't diagnose
+	name lookup failure if the arguments to an unresolved template
+	name are still dependent.
+
+2021-11-18  Patrick Palka  <ppalka@redhat.com>
+
+	PR c++/102670
+	* pt.c (tsubst_copy_and_build) <case CALL_EXPR>: When looking
+	for an identifier callee in the koenig_p case, also look through
+	TEMPLATE_ID_EXPR.  Use tsubst_copy to substitute through the
+	template arguments of the template-id.
+
+2021-11-18  Matthias Kretz  <m.kretz@gsi.de>
+
+	* constexpr.c (cxx_eval_constant_expression): Handle PAREN_EXPR
+	via cxx_eval_constant_expression.
+	* cp-objcp-common.c (names_builtin_p): Handle
+	RID_BUILTIN_ASSOC_BARRIER.
+	* cp-tree.h: Adjust TREE_LANG_FLAG documentation to include
+	PAREN_EXPR in REF_PARENTHESIZED_P.
+	(REF_PARENTHESIZED_P): Add PAREN_EXPR.
+	* parser.c (cp_parser_postfix_expression): Handle
+	RID_BUILTIN_ASSOC_BARRIER.
+	* pt.c (tsubst_copy_and_build): If the PAREN_EXPR is not a
+	parenthesized initializer, build a new PAREN_EXPR.
+	* semantics.c (force_paren_expr): Simplify conditionals. Set
+	REF_PARENTHESIZED_P on PAREN_EXPR.
+	(maybe_undo_parenthesized_ref): Test PAREN_EXPR for
+	REF_PARENTHESIZED_P.
+
+2021-11-18  Martin Liska  <mliska@suse.cz>
+
+	* parser.c (add_debug_begin_stmt): Use option directly.
+
 2021-11-16  Jason Merrill  <jason@redhat.com>
 
 	* ptree.c (cxx_print_xnode): Handle PTRMEM_CST.
diff --git a/gcc/d/ChangeLog b/gcc/d/ChangeLog
index b752dd9cee2..d04102a2b98 100644
--- a/gcc/d/ChangeLog
+++ b/gcc/d/ChangeLog
@@ -1,3 +1,8 @@
+2021-11-18  Iain Buclaw  <ibuclaw@gdcproject.org>
+
+	* decl.cc (d_finish_decl): Use HOST_WIDE_INT for type size
+	temporaries.
+
 2021-10-22  Eric Gallager  <egallager@gcc.gnu.org>
 
 	PR other/102663
diff --git a/gcc/fortran/ChangeLog b/gcc/fortran/ChangeLog
index f5abad99572..de5d4de6fd9 100644
--- a/gcc/fortran/ChangeLog
+++ b/gcc/fortran/ChangeLog
@@ -1,3 +1,10 @@
+2021-11-18  Harald Anlauf  <anlauf@gmx.de>
+	    Steven G. Kargl  <kargl@gcc.gnu.org>
+
+	PR fortran/101329
+	* check.c (is_c_interoperable): Reject NULL() as it is not
+	interoperable.
+
 2021-11-16  Harald Anlauf  <anlauf@gmx.de>
 
 	PR fortran/103286
diff --git a/gcc/lto/ChangeLog b/gcc/lto/ChangeLog
index 38350b36ee8..580a631bc1c 100644
--- a/gcc/lto/ChangeLog
+++ b/gcc/lto/ChangeLog
@@ -1,3 +1,7 @@
+2021-11-18  Jan Hubicka  <hubicka@ucw.cz>
+
+	* lto-partition.c (promote_symbol): Clear semantic_interposition flag.
+
 2021-11-06  Jan Hubicka  <hubicka@ucw.cz>
 
 	PR ipa/103070
diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog
index 594cc2c66c5..18340f6db9c 100644
--- a/gcc/testsuite/ChangeLog
+++ b/gcc/testsuite/ChangeLog
@@ -1,3 +1,97 @@
+2021-11-18  Marek Polacek  <polacek@redhat.com>
+
+	PR c++/103049
+	* g++.dg/cpp0x/auto25.C: Adjust dg-error.
+	* g++.dg/cpp0x/auto9.C: Likewise.
+	* g++.dg/cpp2a/concepts-pr84979-2.C: Likewise.
+	* g++.dg/cpp2a/concepts-pr84979-3.C: Likewise.
+	* g++.dg/cpp23/auto-fncast1.C: New test.
+	* g++.dg/cpp23/auto-fncast2.C: New test.
+	* g++.dg/cpp23/auto-fncast3.C: New test.
+	* g++.dg/cpp23/auto-fncast4.C: New test.
+	* g++.dg/cpp23/auto-fncast5.C: New test.
+	* g++.dg/cpp23/auto-fncast6.C: New test.
+
+2021-11-18  Harald Anlauf  <anlauf@gmx.de>
+	    Steven G. Kargl  <kargl@gcc.gnu.org>
+
+	PR fortran/101329
+	* gfortran.dg/pr101329.f90: New test.
+
+2021-11-18  Patrick Palka  <ppalka@redhat.com>
+
+	* g++.dg/cpp2a/fn-template25.C: New test.
+
+2021-11-18  Jan Hubicka  <hubicka@ucw.cz>
+
+	* gcc.dg/lto/semantic-interposition-1_0.c: New test.
+	* gcc.dg/lto/semantic-interposition-1_1.c: New test.
+
+2021-11-18  Jan Hubicka  <hubicka@ucw.cz>
+
+	PR ipa/103266
+	* g++.dg/torture/pr103266.C: New test.
+
+2021-11-18  Tamar Christina  <tamar.christina@arm.com>
+
+	PR tree-optimization/103311
+	* gcc.target/aarch64/pr103311.c: New test.
+
+2021-11-18  H.J. Lu  <hjl.tools@gmail.com>
+
+	PR target/102952
+	* gcc.target/i386/indirect-thunk-cs-prefix-1.c: New test.
+	* gcc.target/i386/indirect-thunk-cs-prefix-2.c: Likewise.
+
+2021-11-18  Jeff Law  <jeffreyalaw@gmail.com>
+
+	* gcc.target/mips/octeon-bbit-1.c (f3): Add noipa attribute.
+
+2021-11-18  Patrick Palka  <ppalka@redhat.com>
+
+	PR c++/99911
+	* g++.dg/cpp2a/fn-template24.C: New test.
+
+2021-11-18  Patrick Palka  <ppalka@redhat.com>
+
+	PR c++/102670
+	* g++.dg/cpp2a/concepts-recursive-sat1.C: Adjust to use ADL
+	proper.
+	* g++.dg/cpp2a/fn-template23.C: New test.
+
+2021-11-18  Tamar Christina  <tamar.christina@arm.com>
+
+	PR tree-optimization/103253
+	* gcc.dg/vect/pr103253.c: New test.
+
+2021-11-18  Matthias Kretz  <m.kretz@gsi.de>
+
+	* c-c++-common/builtin-assoc-barrier-1.c: New test.
+
+2021-11-18  Richard Biener  <rguenther@suse.de>
+
+	PR testsuite/103278
+	* gcc.dg/tree-ssa/if-to-switch-3.c: Supply
+	--param case-values-threshold=4.
+
+2021-11-18  Richard Biener  <rguenther@suse.de>
+
+	PR tree-optimization/103277
+	* gcc.dg/pr103277.c: New testcase.
+
+2021-11-18  Hongyu Wang  <hongyu.wang@intel.com>
+
+	* gcc.target/i386/pr103069-2.c: Adjust.
+
+2021-11-18  konglin1  <lingling.kong@intel.com>
+
+	* gcc.target/i386/avx512fp16-vfcmulcph-1a.c: Add new test for alias.
+	* gcc.target/i386/avx512fp16-vfcmulcsh-1a.c: Likewise.
+	* gcc.target/i386/avx512fp16-vfmulcph-1a.c: Likewise.
+	* gcc.target/i386/avx512fp16-vfmulcsh-1a.c: Likewise.
+	* gcc.target/i386/avx512fp16vl-vfcmulcph-1a.c: Likewise.
+	* gcc.target/i386/avx512fp16vl-vfmulcph-1a.c: Likewise.
+
 2021-11-17  Andrew Pinski  <apinski@marvell.com>
 
 	PR tree-optimization/103228
diff --git a/libgomp/ChangeLog b/libgomp/ChangeLog
index b3b7ec56932..b5bacda4176 100644
--- a/libgomp/ChangeLog
+++ b/libgomp/ChangeLog
@@ -1,3 +1,27 @@
+2021-11-18  David Edelsohn  <dje.gcc@gmail.com>
+
+	* alloc.c (gomp_aligned_alloc): Fix typo.
+
+2021-11-18  Jakub Jelinek  <jakub@redhat.com>
+
+	PR libgomp/102838
+	* libgomp.h (GOMP_USE_ALIGNED_WORK_SHARES): Define if
+	GOMP_HAVE_EFFICIENT_ALIGNED_ALLOC is defined and __AMDGCN__ is not.
+	(struct gomp_work_share): Use GOMP_USE_ALIGNED_WORK_SHARES instead of
+	GOMP_HAVE_EFFICIENT_ALIGNED_ALLOC.
+	* work.c (alloc_work_share, gomp_work_share_start): Likewise.
+	* team.c (gomp_new_team): If GOMP_USE_ALIGNED_WORK_SHARES, use
+	gomp_aligned_alloc instead of team_malloc.
+
+2021-11-18  Jakub Jelinek  <jakub@redhat.com>
+
+	PR libgomp/102838
+	* alloc.c (gomp_aligned_alloc): Prefer _aligned_alloc over
+	memalign over posix_memalign over aligned_alloc over fallback
+	with malloc instead of aligned_alloc over _aligned_alloc over
+	posix_memalign over memalign over fallback with malloc.  For
+	aligned_alloc, round up size up to multiple of al.
+
 2021-11-16  Jakub Jelinek  <jakub@redhat.com>
 
 	* libgomp.texi (OpenMP 5.1): Mark thread_limit clause to target
diff --git a/libsanitizer/ChangeLog b/libsanitizer/ChangeLog
index 495245d9d04..67bd3fd94fd 100644
--- a/libsanitizer/ChangeLog
+++ b/libsanitizer/ChangeLog
@@ -1,3 +1,10 @@
+2021-11-18  Jakub Jelinek  <jakub@redhat.com>
+
+	PR bootstrap/102675
+	* sanitizer_common/Makefile.am: Use -DUSE_SYSTEM_MD5 in AM_CXXFLAGS
+	of sanitizer_platform_limits_freebsd.cpp.
+	* sanitizer_common/Makefile.in: Regenerated.
+
 2021-11-13  H.J. Lu  <hjl.tools@gmail.com>
 
 	* LOCAL_PATCHES: Update to the corresponding revision.
diff --git a/libstdc++-v3/ChangeLog b/libstdc++-v3/ChangeLog
index 575e1d26200..e414be086fe 100644
--- a/libstdc++-v3/ChangeLog
+++ b/libstdc++-v3/ChangeLog
@@ -1,3 +1,15 @@
+2021-11-18  Jonathan Wakely  <jwakely@redhat.com>
+
+	* include/bits/char_traits.h (__gnu_cxx::char_traits::move):
+	Do not compare unrelated pointers during constant evaluation.
+	* testsuite/21_strings/char_traits/requirements/constexpr_functions_c++20.cc:
+	Improve tests for char_traits::move.
+
+2021-11-18  Jonathan Wakely  <jwakely@redhat.com>
+
+	* acinclude.m4: Replace AC_CACHE_VAL with AC_CACHE_CHECK.
+	* configure: Regenerate.
+
 2021-11-17  Jonathan Wakely  <jwakely@redhat.com>
 
 	* include/experimental/internet (address): Use std::_Construct