+2021-06-02 Uroš Bizjak <ubizjak@gmail.com>
+
+ * config/i386/sse.md (abs<MMXMODEI:mode>2):
+ Change define_insn to define_expand.
+
+2021-06-02 Uros Bizjak <ubizjak@gmail.com>
+
+ Backported from master:
+ 2021-05-18 Uroš Bizjak <ubizjak@gmail.com>
+
+ * config/i386/sse.md (<any_extend:insn>v4qiv4di2):
+ Fix a mode mismatch with operand 1.
+
2021-06-01 Jason Merrill <jason@redhat.com>
PR c++/91859
+2021-06-02 Jonathan Wakely <jwakely@redhat.com>
+
+ Backported from master:
+ 2021-05-20 Jonathan Wakely <jwakely@redhat.com>
+
+ PR libstdc++/100676
+ * include/bits/c++config (__glibcxx_assert_1): Rename to ...
+ (__glibcxx_constexpr_assert): ... this.
+ (__glibcxx_assert_impl): Use __glibcxx_constexpr_assert.
+ (__glibcxx_assert): Define as either __glibcxx_constexpr_assert
+ or __glibcxx_assert_impl.
+ (__glibcxx_assert_2): Remove
+ * include/debug/macros.h (_GLIBCXX_DEBUG_VERIFY_AT_F): Use
+ __glibcxx_constexpr_assert instead of __glibcxx_assert_1.
+ * testsuite/21_strings/basic_string_view/element_access/char/back_constexpr_neg.cc:
+ Adjust expected error.
+ * testsuite/21_strings/basic_string_view/element_access/char/constexpr_neg.cc:
+ Likewise.
+ * testsuite/21_strings/basic_string_view/element_access/char/front_constexpr_neg.cc:
+ Likewise.
+ Likewise.
+ * testsuite/21_strings/basic_string_view/element_access/wchar_t/back_constexpr_neg.cc:
+ Likewise.
+ * testsuite/21_strings/basic_string_view/element_access/wchar_t/constexpr_neg.cc:
+ Likewise.
+ * testsuite/21_strings/basic_string_view/element_access/wchar_t/front_constexpr_neg.cc:
+ Likewise.
+ * testsuite/23_containers/span/back_neg.cc: Likewise.
+ * testsuite/23_containers/span/front_neg.cc: Likewise.
+ * testsuite/23_containers/span/index_op_neg.cc: Likewise.
+
+2021-06-02 Jonathan Wakely <jwakely@redhat.com>
+
+ Backported from master:
+ 2021-06-01 Jonathan Wakely <jwakely@redhat.com>
+
+ PR libstdc++/100833
+ * include/bits/ranges_base.h (ranges::advance(iter, n, sentinel)):
+ Fix return value for no-op case.
+ * testsuite/24_iterators/range_operations/advance.cc: Test
+ return values of three-argument overload.
+
+2021-06-02 Jonathan Wakely <jwakely@redhat.com>
+
+ Backported from master:
+ 2021-05-26 Jonathan Wakely <jwakely@redhat.com>
+
+ PR libstdc++/100768
+ * include/bits/ranges_base.h (advance, distance, next, prev):
+ Replace function templates with function objects.
+ * testsuite/24_iterators/headers/iterator/synopsis_c++20.cc:
+ Adjust for changes to function objects.
+ * testsuite/std/ranges/adaptors/elements.cc: Add using
+ declarations for names from namespace ranges.
+ * testsuite/std/ranges/adaptors/transform.cc: Likewise.
+ * testsuite/24_iterators/range_operations/100768.cc: New test.
+
+2021-06-02 Jonathan Wakely <jwakely@redhat.com>
+
+ Backported from master:
+ 2021-06-01 Jonathan Wakely <jwakely@redhat.com>
+
+ PR libstdc++/99453
+ * python/Makefile.am: Use archive name for printer hook if no
+ dynamic library name is available.
+ * python/Makefile.in: Regenerate.
+
2021-05-28 David Edelsohn <dje.gcc@gmail.com>
Backported from master: