+2021-04-30 David Edelsohn <dje.gcc@gmail.com>
+
+ Backported from master:
+ 2021-04-27 David Edelsohn <dje.gcc@gmail.com>
+
+ * config/rs6000/aix.h (SUBTARGET_DRIVER_SELF_SPECS): New.
+ * config/rs6000/aix64.opt (m64): New.
+ (m32): New.
+
+2021-04-30 Alex Coplan <alex.coplan@arm.com>
+
+ Backported from master:
+ 2021-04-23 Alex Coplan <alex.coplan@arm.com>
+
+ PR rtl-optimization/100230
+ * early-remat.c (early_remat::sort_candidates): Use delete[]
+ instead of delete for array allocated with new[].
+
2021-04-29 Richard Earnshaw <rearnsha@arm.com>
Backported from master:
+2021-04-30 Richard Biener <rguenther@suse.de>
+
+ Backported from master:
+ 2021-04-30 Richard Biener <rguenther@suse.de>
+
+ PR c++/98032
+ * g++.dg/pr98032.C: New testcase.
+
+2021-04-30 Richard Biener <rguenther@suse.de>
+
+ PR tree-optimization/96513
+ * gcc.dg/torture/pr96513.c: New testcase.
+
2021-04-29 Jakub Jelinek <jakub@redhat.com>
Backported from master:
+2021-04-30 Jonathan Wakely <jwakely@redhat.com>
+
+ Backported from master:
+ 2021-04-30 Jonathan Wakely <jwakely@redhat.com>
+
+ * include/bits/basic_string.h (__cpp_lib_constexpr_string):
+ Only define for C++17 and later.
+ * include/std/version (__cpp_lib_semaphore): Fix condition
+ to match the one in <semaphore>.
+
2021-04-29 Jonathan Wakely <jwakely@redhat.com>
Backported from master: