+2025-04-29 liuhongt <hongtao.liu@intel.com>
+
+ Backported from master:
+ 2025-04-29 liuhongt <hongtao.liu@intel.com>
+
+ * config/i386/x86-tune.def (X86_TUNE_DEST_FALSE_DEP_FOR_GLC):
+ Remove other processor except for GLC since this one is only
+ for GLC.
+
2025-04-28 Tamar Christina <tamar.christina@arm.com>
Backported from master:
+2025-04-29 Patrick Palka <ppalka@redhat.com>
+
+ Backported from master:
+ 2025-04-15 Patrick Palka <ppalka@redhat.com>
+
+ PR c++/119807
+ PR c++/112288
+ * pt.cc (tsubst_friend_function): Skip remapping an
+ existing specialization if it doesn't match the shape of
+ the new friend definition.
+
2025-04-28 Jason Merrill <jason@redhat.com>
Backported from master:
+2025-04-29 Patrick Palka <ppalka@redhat.com>
+
+ Backported from master:
+ 2025-04-15 Patrick Palka <ppalka@redhat.com>
+
+ PR c++/119807
+ PR c++/112288
+ * g++.dg/template/friend86.C: New test.
+ * g++.dg/template/friend87.C: New test.
+
2025-04-28 Jason Merrill <jason@redhat.com>
Backported from master:
+2025-04-29 Patrick Palka <ppalka@redhat.com>
+
+ Backported from master:
+ 2025-02-28 Patrick Palka <ppalka@redhat.com>
+
+ PR libstdc++/104606
+ * include/std/optional (operator<=>): Revert r14-9771 change.
+ Add constraint checking the validity of the return type
+ compare_three_way_result_t before the three_way_comparable_with
+ constraint.
+
+2025-04-29 Patrick Palka <ppalka@redhat.com>
+
+ Backported from master:
+ 2025-02-26 Patrick Palka <ppalka@redhat.com>
+
+ PR libstdc++/118083
+ * include/bits/ranges_base.h
+ (ranges::__access::__possibly_const_range): Mention LWG 4027.
+
+2025-04-29 Patrick Palka <ppalka@redhat.com>
+
+ Backported from master:
+ 2025-02-25 Patrick Palka <ppalka@redhat.com>
+
+ PR libstdc++/118083
+ * include/bits/ranges_base.h
+ (ranges::__access::__possibly_const_range): Adjust logic as per
+ LWG 4027. Add missing input_range constraint.
+ * testsuite/std/ranges/access/cbegin.cc (test05): Verify LWG
+ 4027 testcases.
+ * testsuite/std/ranges/access/cdata.cc: Adjust, simplify and
+ consolidate some tests after the above.
+ * testsuite/std/ranges/access/cend.cc: Likewise.
+ * testsuite/std/ranges/access/crbegin.cc: Likewise.
+ * testsuite/std/ranges/access/crend.cc: Likewise.
+ * testsuite/std/ranges/adaptors/join.cc: Likewise.
+ * testsuite/std/ranges/adaptors/take_while.cc: Likewise.
+ * testsuite/std/ranges/adaptors/transform.cc: Likewise.
+
2025-04-17 Tomasz KamiĆski <tkaminsk@redhat.com>
Backported from master: