diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 21307e0b4f69d05c1714495b0f0f9cd7c3c5fc9a..ef93c56fe21bb36469f4a5afb7879696c7d2279a 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,27 @@
+2021-03-16  Segher Boessenkool  <segher@kernel.crashing.org>
+
+	PR target/98092
+	* config/rs6000/predicates.md (branch_comparison_operator): Allow
+	ordered and unordered for CCFPmode, if flag_finite_math_only.
+
+2021-03-16  Jakub Jelinek  <jakub@redhat.com>
+
+	PR target/99600
+	* config/i386/i386-expand.c (ix86_split_lea_for_addr): Emit a MULT
+	rather than ASHIFT.
+	* config/i386/i386.md (mult by 1248 into ashift): New splitter.
+
+2021-03-16  Martin Liska  <mliska@suse.cz>
+
+	PR target/99592
+	* optc-save-gen.awk: Add flag_ipa_ra to exceptions for
+	cl_optimization_compare function.
+
+2021-03-16  Ilya Leoshkevich  <iii@linux.ibm.com>
+
+	* config/s390/s390.c (f_constraint_p): Treat "fv" constraints
+	as "v".
+
 2021-03-16  Jakub Jelinek  <jakub@redhat.com>
 
 	PR target/99563
diff --git a/gcc/DATESTAMP b/gcc/DATESTAMP
index 25e272c67163718e2eb583f05747e4b390fa86c6..609f807edec9302670e11b7a5e5877d639edf385 100644
--- a/gcc/DATESTAMP
+++ b/gcc/DATESTAMP
@@ -1 +1 @@
-20210316
+20210317
diff --git a/gcc/cp/ChangeLog b/gcc/cp/ChangeLog
index 5dcdebdf1057cd544393b9cf8342fc9a1ec89af3..0f914146d1e7576dfdd031770ed310b2e51ff6ad 100644
--- a/gcc/cp/ChangeLog
+++ b/gcc/cp/ChangeLog
@@ -1,3 +1,33 @@
+2021-03-16  Jason Merrill  <jason@redhat.com>
+
+	* tree.c (cp_tree_equal): Use real_identical.
+
+2021-03-16  Jakub Jelinek  <jakub@redhat.com>
+
+	PR c++/99613
+	* decl.c (expand_static_init): For thread guards, call __cxa_atexit
+	before calling __cxa_guard_release rather than after it.  Formatting
+	fixes.
+
+2021-03-16  Martin Liska  <mliska@suse.cz>
+	    Jason Merrill  <jason@redhat.com>
+
+	PR c++/99108
+	* call.c (get_function_version_dispatcher): Handle
+	DECL_LOCAL_DECL_P.
+	* decl.c (maybe_version_functions): Likewise.
+	(maybe_mark_function_versioned): New.
+	* name-lookup.c (push_local_extern_decl_alias): No longer static.
+	* name-lookup.h (push_local_extern_decl_alias): Adjust.
+
+2021-03-16  Nathan Sidwell  <nathan@acm.org>
+
+	PR c++/99496
+	* module.cc (trees_out::decl_value): Adjust typedef streaming,
+	indicate whether it is a dependent alias.
+	(trees_in::decl_value): Likewise.  Set as dependent alias, if it
+	is one.
+
 2021-03-15  Iain Sandoe  <iain@sandoe.co.uk>
 
 	PR c++/99047
diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog
index 5ce7c1c9628c88970603c6d6ef19d9cbf208336e..5e6b5368ac7ff23d21570a608ed3b8fd1cfbcec9 100644
--- a/gcc/testsuite/ChangeLog
+++ b/gcc/testsuite/ChangeLog
@@ -1,3 +1,44 @@
+2021-03-16  Christophe Lyon  <christophe.lyon@linaro.org>
+
+	PR target/99542
+	* gcc.dg/declare-simd.c (fn2): Expect a warning only under lp64.
+
+2021-03-16  Jason Merrill  <jason@redhat.com>
+
+	* g++.dg/cpp2a/nontype-float1.C: New test.
+
+2021-03-16  Segher Boessenkool  <segher@kernel.crashing.org>
+
+	PR target/98092
+	PR target/98092
+	* gcc.target/powerpc/pr98092.c: New.
+
+2021-03-16  Jakub Jelinek  <jakub@redhat.com>
+
+	PR target/99600
+	* gcc.target/i386/pr99600.c: New test.
+
+2021-03-16  Martin Liska  <mliska@suse.cz>
+	    Jason Merrill  <jason@redhat.com>
+
+	PR c++/99108
+	* g++.target/i386/pr99108.C: New test.
+
+2021-03-16  Martin Liska  <mliska@suse.cz>
+
+	PR target/99592
+	* gcc.target/arm/pr99592.c: New test.
+
+2021-03-16  Ilya Leoshkevich  <iii@linux.ibm.com>
+
+	* gcc.target/s390/vector/long-double-asm-fprvrmem.c: New test.
+
+2021-03-16  Nathan Sidwell  <nathan@acm.org>
+
+	PR c++/99496
+	* g++.dg/modules/pr99496_a.H: New.
+	* g++.dg/modules/pr99496_b.C: New.
+
 2021-03-16  Jakub Jelinek  <jakub@redhat.com>
 
 	PR target/99563
diff --git a/libiberty/ChangeLog b/libiberty/ChangeLog
index 3c0ee1a36a82c0021fc65eab3ac9a451e0ce3298..99bb5851f6fca14b033949a79c00a213961d34e4 100644
--- a/libiberty/ChangeLog
+++ b/libiberty/ChangeLog
@@ -1,3 +1,7 @@
+2021-03-16  Nick Clifton  <nickc@redhat.com>
+
+	* sha1.c (sha1_process_bytes): Use memmove in place of memcpy.
+
 2021-02-20  Mike Frysinger  <vapier@gentoo.org>
 
 	* Makefile.in (ACLOCAL, ACLOCAL_AMFLAGS, $(srcdir)/aclocal.m4): Define.
diff --git a/libstdc++-v3/ChangeLog b/libstdc++-v3/ChangeLog
index ce85c22e15127a4a29b0184797f711286c265927..2d2bd37c67309017c3b430dfbe2d1cd15b428a84 100644
--- a/libstdc++-v3/ChangeLog
+++ b/libstdc++-v3/ChangeLog
@@ -1,3 +1,33 @@
+2021-03-16  Jonathan Wakely  <jwakely@redhat.com>
+
+	PR libstdc++/99341
+	* config/abi/post/aarch64-linux-gnu/baseline_symbols.txt: Remove
+	std::once_flag symbols.
+	* config/abi/post/ia64-linux-gnu/baseline_symbols.txt: Likewise.
+	* config/abi/post/m68k-linux-gnu/baseline_symbols.txt: Likewise.
+	* config/abi/post/riscv64-linux-gnu/baseline_symbols.txt:
+	Likewise.
+	* config/abi/pre/gnu.ver: Likewise.
+	* src/c++11/mutex.cc [_GLIBCXX_HAVE_LINUX_FUTEX]
+	(struct __once_flag_compat): Remove.
+	(_ZNSt9once_flag11_M_activateEv): Remove.
+	(_ZNSt9once_flag9_M_finishEb): Remove.
+
+2021-03-16  Jonathan Wakely  <jwakely@redhat.com>
+
+	PR libstdc++/99341
+	* include/std/mutex [_GLIBCXX_HAVE_LINUX_FUTEX] (once_flag):
+	Revert to pthread_once_t implementation.
+	[_GLIBCXX_HAVE_LINUX_FUTEX] (call_once): Likewise.
+	* src/c++11/mutex.cc [_GLIBCXX_HAVE_LINUX_FUTEX]
+	(struct __once_flag_compat): New type matching the reverted
+	implementation of once_flag using futexes.
+	(once_flag::_M_activate): Remove, replace with ...
+	(_ZNSt9once_flag11_M_activateEv): ... alias symbol.
+	(once_flag::_M_finish): Remove, replace with ...
+	(_ZNSt9once_flag9_M_finishEb): ... alias symbol.
+	* testsuite/30_threads/call_once/66146.cc: Removed.
+
 2021-03-15  Iain Sandoe  <iain@sandoe.co.uk>
 
 	* testsuite/17_intro/names.cc: Exclude j from the list