[gcc r15-10867] Daily bump.

[GCC Administrator]

https://gcc.gnu.org/g:74b6b9dfdf835656a0350fa3c924fdd93c357185

commit r15-10867-g74b6b9dfdf835656a0350fa3c924fdd93c357185
Author: GCC Administrator <gccadmin@gcc.gnu.org>
Date:   Fri Feb 27 00:20:22 2026 +0000

    Daily bump.

Diff:
---
 gcc/ChangeLog           | 35 +++++++++++++++++++++++++++++++++++
 gcc/DATESTAMP           |  2 +-
 gcc/lto/ChangeLog       |  9 +++++++++
 gcc/testsuite/ChangeLog |  9 +++++++++
 libstdc++-v3/ChangeLog  | 16 ++++++++++++++++
 5 files changed, 70 insertions(+), 1 deletion(-)

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index e51e0d97f070..6a22c56ce5ab 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,38 @@
+2026-02-26  Xi Ruoyao  <xry111@xry111.site>
+
+	Revert:
+	2025-11-08  Lulu Cheng  <chenglulu@loongson.cn>
+
+	PR target/122097
+	* config/loongarch/loongarch.cc
+	(loongarch_const_vector_same_bytes_p): Add processing for
+	floating-point vector data.
+
+2026-02-26  Xi Ruoyao  <xry111@xry111.site>
+
+	Backported from master:
+	2026-02-03  Xi Ruoyao  <xry111@xry111.site>
+
+	* config/loongarch/predicates.md (const_vector_neg_fp_operand):
+	New define_predicate.
+	(reg_or_vector_neg_fp_operand): New define_predicate.
+	* config/loongarch/lasx.md (copysign<mode>3): Remove.
+	(xorsign<mode>3): Remove.
+	* config/loongarch/lsx.md (copysign<mode>3): Remove.
+	(@xorsign<mode>3): Remove.
+	* config/loongarch/simd.md (copysign<mode>3): New define_expand.
+	(@xorsign<mode>3): New define_expand.
+	(and<mode>3): Only allow IVEC instead of ALLVEC.
+	(ior<mode>3): Likewise.
+	(xor<mode>3): Likewise.
+	* config/loongarch/loongarch.cc (loongarch_print_operand): No
+	longer allow floating-point vector constants for %V.
+	(loongarch_const_vector_bitimm_set_p): Always return false for
+	floating-point vector constants.
+	(loongarch_build_signbit_mask): Factor out force_reg.
+	(loongarch_emit_swrsqrtsf): Use integer vector mode instead of
+	floating-point vector mode when masking zero inputs.
+
 2026-02-25  Christophe Lyon  <christophe.lyon@linaro.org>
 
 	Backported from master:
diff --git a/gcc/DATESTAMP b/gcc/DATESTAMP
index f9cae02a3664..3d778126f72f 100644
--- a/gcc/DATESTAMP
+++ b/gcc/DATESTAMP
@@ -1 +1 @@
-20260226
+20260227
diff --git a/gcc/lto/ChangeLog b/gcc/lto/ChangeLog
index 0b2fa1e7c6b6..09cfd4e4ffd2 100644
--- a/gcc/lto/ChangeLog
+++ b/gcc/lto/ChangeLog
@@ -1,3 +1,12 @@
+2026-02-26  Michal Jires  <mjires@suse.cz>
+
+	Backported from master:
+	2026-01-11  Michal Jires  <mjires@suse.cz>
+
+	PR lto/121588
+	* lto-symtab.cc (lto_symtab_merge_symbols): Set body_removed
+	for symbols resolved outside of IR.
+
 2025-12-03  Siddhesh Poyarekar  <siddhesh@gotplt.org>
 
 	Backported from master:
diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog
index a2e16543fb1f..910cbee673ad 100644
--- a/gcc/testsuite/ChangeLog
+++ b/gcc/testsuite/ChangeLog
@@ -1,3 +1,12 @@
+2026-02-26  Michal Jires  <mjires@suse.cz>
+
+	Backported from master:
+	2026-01-11  Michal Jires  <mjires@suse.cz>
+
+	PR lto/121588
+	* gcc.dg/lto/attr-weakref-2_0.c: New test.
+	* gcc.dg/lto/attr-weakref-2_1.c: New test.
+
 2026-02-25  Eric Botcazou  <ebotcazou@adacore.com>
 
 	* gnat.dg/protected_deref1.adb: New test.
diff --git a/libstdc++-v3/ChangeLog b/libstdc++-v3/ChangeLog
index 49777a4daf95..7728740d51a7 100644
--- a/libstdc++-v3/ChangeLog
+++ b/libstdc++-v3/ChangeLog
@@ -1,3 +1,19 @@
+2026-02-26  Tomasz Kamiński  <tkaminsk@redhat.com>
+
+	PR libstdc++/123875
+	* include/bits/atomic_base.h (__atomic_impl::__clear_padding):
+	Use if constexpr unconditionally.
+	(__atomic_float<_Fp>::__atomic_float(_Fp)): Skip __clear_padding
+	call for constant evaluation.
+	* include/std/atomic (atomic<_Tp>::atomic(_Tp)): Likewise.
+	* testsuite/29_atomics/atomic/cons/zero_padding.cc: New test.
+	* testsuite/29_atomics/atomic_float/zero_padding.cc: New test.
+	(cherry picked from commits
+	6b550d69fe7cb62ea6e240ce7a4ba29ce33aa1b1
+	682c95b808724e6f876ea709b873ac6771704d7b
+	060d7c2a9c1fe16d23d98a74287fdb7c73ddb784
+	f3ba5ad088cebe117f857329a35b95d18d97a808)
+
 2026-02-10  Jonathan Wakely  <jwakely@redhat.com>
 
 	Backported from master: