diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index f7d6b04fe9d1c5e553021e18de3e5b9db7c7e6de..7a71b4367d4cd0cbcc5ced162673ee12c418b55f 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,48 @@
+2020-08-24  Gerald Pfeifer  <gerald@pfeifer.com>
+
+	* doc/install.texi (Configuration): Switch valgrind.com to https.
+
+2020-08-24  Christophe Lyon  <christophe.lyon@linaro.org>
+
+	PR target/94538
+	PR target/94538
+	* config/arm/thumb1.md: Disable set-constant splitter when
+	TARGET_HAVE_MOVT.
+	(thumb1_movsi_insn): Fix -mpure-code
+	alternative.
+
+2020-08-24  Martin Liska  <mliska@suse.cz>
+
+	* tree-vect-data-refs.c (dr_group_sort_cmp): Work on
+	data_ref_pair.
+	(vect_analyze_data_ref_accesses): Work on groups.
+	(vect_find_stmt_data_reference): Add group_id argument and fill
+	up dataref_groups vector.
+	* tree-vect-loop.c (vect_get_datarefs_in_loop): Pass new
+	arguments.
+	(vect_analyze_loop_2): Likewise.
+	* tree-vect-slp.c (vect_slp_analyze_bb_1): Pass argument.
+	(vect_slp_bb_region): Likewise.
+	(vect_slp_region): Likewise.
+	(vect_slp_bb):Work on the entire BB.
+	* tree-vectorizer.h (vect_analyze_data_ref_accesses): Add new
+	argument.
+	(vect_find_stmt_data_reference): Likewise.
+
+2020-08-24  Martin Liska  <mliska@suse.cz>
+
+	PR tree-optimization/96597
+	* tree-ssa-sccvn.c (vn_reference_lookup_call): Add missing
+	initialization of ::punned.
+	(vn_reference_insert): Use consistently false instead of 0.
+	(vn_reference_insert_pieces): Likewise.
+
+2020-08-24  Hans-Peter Nilsson  <hp@axis.com>
+
+	PR target/93372
+	* reorg.c (fill_slots_from_thread): Allow trial insns that clobber
+	TARGET_FLAGS_REGNUM as delay-slot fillers.
+
 2020-08-23  H.J. Lu  <hjl.tools@gmail.com>
 
 	PR target/96744
diff --git a/gcc/DATESTAMP b/gcc/DATESTAMP
index d0461daaefd050c9ddae60ed3f272538faa73d48..758e09d65f8527ab60c0de7f124c98763c1f2b23 100644
--- a/gcc/DATESTAMP
+++ b/gcc/DATESTAMP
@@ -1 +1 @@
-20200824
+20200825
diff --git a/gcc/cp/ChangeLog b/gcc/cp/ChangeLog
index 459a98eae150d914c9546a88715b6116ac302ef5..aec42dfff431884e4b595c6126cff5bee9b81791 100644
--- a/gcc/cp/ChangeLog
+++ b/gcc/cp/ChangeLog
@@ -1,3 +1,7 @@
+2020-08-24  Nathan Sidwell  <nathan@acm.org>
+
+	* ptree.c (debug_overload): New.
+
 2020-08-19  Jason Merrill  <jason@redhat.com>
 
 	DR 2369
diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog
index 1ee74bd8eb4b20a7b1cfbff817d9b1652f8a49bd..b9562e6788394fc5a57ebcc65b430e7dbdb57a06 100644
--- a/gcc/testsuite/ChangeLog
+++ b/gcc/testsuite/ChangeLog
@@ -1,3 +1,25 @@
+2020-08-24  Mark Eggleston  <markeggleston@gcc.gnu.org>
+
+	PR fortran/96486
+	* gfortran.dg/pr96486.f90: New test.
+
+2020-08-24  Christophe Lyon  <christophe.lyon@linaro.org>
+
+	PR target/94538
+	* gcc.target/arm/pure-code/pr94538-1.c: New test.
+	* gcc.target/arm/pure-code/pr94538-2.c: New test.
+
+2020-08-24  Martin Liska  <mliska@suse.cz>
+
+	* gcc.dg/vect/bb-slp-38.c: Adjust pattern as now we only process
+	a single vectorization and now 2 partial.
+	* gcc.dg/vect/bb-slp-45.c: New test.
+
+2020-08-24  Hans-Peter Nilsson  <hp@axis.com>
+
+	PR target/93372
+	* gcc.target/cris/pr93372-47.c: New test.
+
 2020-08-23  H.J. Lu  <hjl.tools@gmail.com>
 
 	PR target/96744
diff --git a/libbacktrace/ChangeLog b/libbacktrace/ChangeLog
index 326461e074ed8892f6ac4197109f5841fce8ae35..107934081001c6e35d28413d63ae5f6cfb8a0a32 100644
--- a/libbacktrace/ChangeLog
+++ b/libbacktrace/ChangeLog
@@ -1,3 +1,11 @@
+2020-08-24  Ian Lance Taylor  <iant@golang.org>
+
+	* macho.c (MACH_O_MH_MAGIC_FAT_64): Define.
+	(MACH_O_MH_CIGAM_FAT_64): Define.
+	(struct macho_fat_arch_64): Define.
+	(macho_add_fat): Add and use is_64 parameter.
+	(macho_add): Recognize 64-bit fat files.
+
 2020-07-30  H.J. Lu  <hjl.tools@gmail.com>
 
 	PR bootstrap/96202
diff --git a/libgfortran/ChangeLog b/libgfortran/ChangeLog
index b2e7d7bf5d92f382dfe46992fc9e2c293b4b47ee..84068b960bb99ebf2b7987d467b49828cd4c1aa9 100644
--- a/libgfortran/ChangeLog
+++ b/libgfortran/ChangeLog
@@ -1,3 +1,9 @@
+2020-08-24  Mark Eggleston  <markeggleston@gcc.gnu.org>
+
+	PR fortran/96486
+	* intrinsics/env.c: If value_len is > 0 blank the string.
+	Copy the result only if its length is > 0.
+
 2020-08-20  Mark Eggleston  <markeggleston@gcc.gnu.org>
 
 	PR fortran/96436
diff --git a/libstdc++-v3/ChangeLog b/libstdc++-v3/ChangeLog
index c807254c162046a4fb0997d61aa516e2de942eec..d5aa71b70f97f65b49db94a6faa5738f206cfcac 100644
--- a/libstdc++-v3/ChangeLog
+++ b/libstdc++-v3/ChangeLog
@@ -1,3 +1,247 @@
+2020-08-24  Jonathan Wakely  <jwakely@redhat.com>
+
+	* include/std/ranges (join_view): Add deduction guide (LWG 3474).
+	* testsuite/std/ranges/adaptors/join_lwg3474.cc: New test.
+
+2020-08-24  Jonathan Wakely  <jwakely@redhat.com>
+
+	* include/bits/iterator_concepts.h (indirectly_readable): Add
+	partial specializations to resolve ambiguities (LWG 3446).
+	* testsuite/24_iterators/associated_types/readable.traits.cc:
+	Check types with both value_type and element_type.
+
+2020-08-24  Jonathan Wakely  <jwakely@redhat.com>
+
+	* include/std/ranges (ranges::iota_view::size()): Perform all
+	calculations in the right unsigned types.
+	* testsuite/std/ranges/iota/size.cc: New test.
+
+2020-08-24  Jonathan Wakely  <jwakely@redhat.com>
+
+	PR libstdc++/96766
+	* include/std/variant (_Variant_storage): Replace implicit
+	conversions from size_t to __index_type with explicit casts.
+
+2020-08-24  Jonathan Wakely  <jwakely@redhat.com>
+
+	* testsuite/30_threads/packaged_task/cons/alloc.cc: Run for
+	C++11 and skip for C++17 or later.
+
+2020-08-24  Corentin Gay  <gay@adacore.com>
+
+	* testsuite/20_util/shared_ptr/atomic/3.cc: Do not require POSIX
+	threads and add -pthread only on targets supporting them.
+	* testsuite/20_util/shared_ptr/thread/default_weaktoshared.cc:
+	Likewise.
+	* testsuite/20_util/shared_ptr/thread/mutex_weaktoshared.cc:
+	Likewise.
+	* testsuite/30_threads/async/42819.cc: Likewise.
+	* testsuite/30_threads/async/49668.cc: Likewise.
+	* testsuite/30_threads/async/54297.cc: Likewise.
+	* testsuite/30_threads/async/any.cc: Likewise.
+	* testsuite/30_threads/async/async.cc: Likewise.
+	* testsuite/30_threads/async/except.cc: Likewise.
+	* testsuite/30_threads/async/launch.cc: Likewise.
+	* testsuite/30_threads/async/lwg2021.cc: Likewise.
+	* testsuite/30_threads/async/sync.cc: Likewise. : Likewise.
+	* testsuite/30_threads/call_once/39909.cc: Likewise.
+	* testsuite/30_threads/call_once/49668.cc: Likewise.
+	* testsuite/30_threads/call_once/60497.cc: Likewise.
+	* testsuite/30_threads/call_once/call_once1.cc: Likewise.
+	* testsuite/30_threads/call_once/dr2442.cc: Likewise.
+	* testsuite/30_threads/condition_variable/54185.cc: Likewise.
+	* testsuite/30_threads/condition_variable/cons/1.cc: Likewise.
+	* testsuite/30_threads/condition_variable/members/1.cc: Likewise.
+	* testsuite/30_threads/condition_variable/members/2.cc: Likewise.
+	* testsuite/30_threads/condition_variable/members/3.cc: Likewise.
+	* testsuite/30_threads/condition_variable/members/53841.cc: Likewise.
+	* testsuite/30_threads/condition_variable/members/68519.cc: Likewise.
+	* testsuite/30_threads/condition_variable/native_handle/typesizes.cc:
+	Likewise.
+	* testsuite/30_threads/condition_variable_any/50862.cc: Likewise.
+	* testsuite/30_threads/condition_variable_any/53830.cc: Likewise.
+	* testsuite/30_threads/condition_variable_any/cond.cc: Likewise.
+	* testsuite/30_threads/condition_variable_any/cons/1.cc: Likewise.
+	* testsuite/30_threads/condition_variable_any/members/1.cc: Likewise.
+	* testsuite/30_threads/condition_variable_any/members/2.cc: Likewise.
+	* testsuite/30_threads/future/cons/move.cc: Likewise.
+	* testsuite/30_threads/future/members/45133.cc: Likewise.
+	* testsuite/30_threads/future/members/get.cc: Likewise.
+	* testsuite/30_threads/future/members/get2.cc: Likewise.
+	* testsuite/30_threads/future/members/share.cc: Likewise.
+	* testsuite/30_threads/future/members/valid.cc: Likewise.
+	* testsuite/30_threads/future/members/wait.cc: Likewise.
+	* testsuite/30_threads/future/members/wait_for.cc: Likewise.
+	* testsuite/30_threads/future/members/wait_until.cc: Likewise.
+	* testsuite/30_threads/lock/1.cc: Likewise.
+	* testsuite/30_threads/lock/2.cc: Likewise.
+	* testsuite/30_threads/lock/3.cc: Likewise.
+	* testsuite/30_threads/lock/4.cc: Likewise.
+	* testsuite/30_threads/mutex/cons/1.cc: Likewise.
+	* testsuite/30_threads/mutex/dest/destructor_locked.cc: Likewise.
+	* testsuite/30_threads/mutex/lock/1.cc: Likewise.
+	* testsuite/30_threads/mutex/native_handle/1.cc: Likewise.
+	* testsuite/30_threads/mutex/native_handle/typesizes.cc: Likewise.
+	* testsuite/30_threads/mutex/try_lock/1.cc: Likewise.
+	* testsuite/30_threads/mutex/try_lock/2.cc: Likewise.
+	* testsuite/30_threads/mutex/unlock/1.cc: Likewise.
+	* testsuite/30_threads/mutex/unlock/2.cc: Likewise.
+	* testsuite/30_threads/packaged_task/49668.cc: Likewise.
+	* testsuite/30_threads/packaged_task/60564.cc: Likewise.
+	* testsuite/30_threads/packaged_task/cons/1.cc: Likewise.
+	* testsuite/30_threads/packaged_task/cons/2.cc: Likewise.
+	* testsuite/30_threads/packaged_task/cons/3.cc: Likewise.
+	* testsuite/30_threads/packaged_task/cons/56492.cc: Likewise.
+	* testsuite/30_threads/packaged_task/cons/alloc.cc: Likewise.
+	* testsuite/30_threads/packaged_task/cons/move.cc: Likewise.
+	* testsuite/30_threads/packaged_task/cons/move_assign.cc: Likewise.
+	* testsuite/30_threads/packaged_task/members/at_thread_exit.cc:
+	Likewise.
+	* testsuite/30_threads/packaged_task/members/get_future.cc: Likewise.
+	* testsuite/30_threads/packaged_task/members/get_future2.cc: Likewise.
+	* testsuite/30_threads/packaged_task/members/invoke.cc: Likewise.
+	* testsuite/30_threads/packaged_task/members/invoke2.cc: Likewise.
+	* testsuite/30_threads/packaged_task/members/invoke3.cc: Likewise.
+	* testsuite/30_threads/packaged_task/members/invoke4.cc: Likewise.
+	* testsuite/30_threads/packaged_task/members/invoke5.cc: Likewise.
+	* testsuite/30_threads/packaged_task/members/reset.cc: Likewise.
+	* testsuite/30_threads/packaged_task/members/reset2.cc: Likewise.
+	* testsuite/30_threads/packaged_task/members/swap.cc: Likewise.
+	* testsuite/30_threads/packaged_task/members/valid.cc: Likewise.
+	* testsuite/30_threads/promise/60966.cc: Likewise.
+	* testsuite/30_threads/promise/cons/1.cc: Likewise.
+	* testsuite/30_threads/promise/cons/alloc.cc: Likewise.
+	* testsuite/30_threads/promise/cons/move.cc: Likewise.
+	* testsuite/30_threads/promise/cons/move_assign.cc: Likewise.
+	* testsuite/30_threads/promise/members/at_thread_exit.cc: Likewise.
+	* testsuite/30_threads/promise/members/at_thread_exit2.cc: Likewise.
+	* testsuite/30_threads/promise/members/get_future.cc: Likewise.
+	* testsuite/30_threads/promise/members/get_future2.cc: Likewise.
+	* testsuite/30_threads/promise/members/set_exception.cc: Likewise.
+	* testsuite/30_threads/promise/members/set_exception2.cc: Likewise.
+	* testsuite/30_threads/promise/members/set_value.cc: Likewise.
+	* testsuite/30_threads/promise/members/set_value2.cc: Likewise.
+	* testsuite/30_threads/promise/members/set_value3.cc: Likewise.
+	* testsuite/30_threads/promise/members/swap.cc: Likewise.
+	* testsuite/30_threads/recursive_mutex/cons/1.cc: Likewise.
+	* testsuite/30_threads/recursive_mutex/dest/destructor_locked.cc:
+	Likewise.
+	* testsuite/30_threads/recursive_mutex/lock/1.cc: Likewise.
+	* testsuite/30_threads/recursive_mutex/native_handle/1.cc: Likewise.
+	* testsuite/30_threads/recursive_mutex/native_handle/typesizes.cc:
+	Likewise.
+	* testsuite/30_threads/recursive_mutex/try_lock/1.cc: Likewise.
+	* testsuite/30_threads/recursive_mutex/try_lock/2.cc: Likewise.
+	* testsuite/30_threads/recursive_mutex/unlock/1.cc: Likewise.
+	* testsuite/30_threads/recursive_mutex/unlock/2.cc: Likewise.
+	* testsuite/30_threads/recursive_timed_mutex/cons/1.cc: Likewise.
+	* testsuite/30_threads/recursive_timed_mutex/dest/destructor_locked.cc:
+	Likewise.
+	* testsuite/30_threads/recursive_timed_mutex/lock/1.cc: Likewise.
+	* testsuite/30_threads/recursive_timed_mutex/lock/2.cc: Likewise.
+	* testsuite/30_threads/recursive_timed_mutex/native_handle/1.cc:
+	Likewise.
+	* testsuite/30_threads/recursive_timed_mutex/native_handle/typesizes.cc:
+	Likewise.
+	* testsuite/30_threads/recursive_timed_mutex/try_lock/1.cc: Likewise.
+	* testsuite/30_threads/recursive_timed_mutex/try_lock/2.cc: Likewise.
+	* testsuite/30_threads/recursive_timed_mutex/try_lock_for/1.cc:
+	Likewise.
+	* testsuite/30_threads/recursive_timed_mutex/try_lock_for/2.cc:
+	Likewise.
+	* testsuite/30_threads/recursive_timed_mutex/try_lock_for/3.cc:
+	Likewise.
+	* testsuite/30_threads/recursive_timed_mutex/try_lock_until/1.cc:
+	Likewise.
+	* testsuite/30_threads/recursive_timed_mutex/try_lock_until/2.cc:
+	Likewise.
+	* testsuite/30_threads/recursive_timed_mutex/unlock/1.cc: Likewise.
+	* testsuite/30_threads/recursive_timed_mutex/unlock/2.cc: Likewise.
+	* testsuite/30_threads/shared_future/cons/move.cc: Likewise.
+	* testsuite/30_threads/shared_future/members/45133.cc: Likewise.
+	* testsuite/30_threads/shared_future/members/get.cc: Likewise.
+	* testsuite/30_threads/shared_future/members/get2.cc: Likewise.
+	* testsuite/30_threads/shared_future/members/valid.cc: Likewise.
+	* testsuite/30_threads/shared_future/members/wait.cc: Likewise.
+	* testsuite/30_threads/shared_future/members/wait_for.cc: Likewise.
+	* testsuite/30_threads/shared_future/members/wait_until.cc: Likewise.
+	* testsuite/30_threads/shared_lock/cons/1.cc: Likewise.
+	* testsuite/30_threads/shared_lock/cons/2.cc: Likewise.
+	* testsuite/30_threads/shared_lock/cons/3.cc: Likewise.
+	* testsuite/30_threads/shared_lock/cons/4.cc: Likewise.
+	* testsuite/30_threads/shared_lock/cons/5.cc: Likewise.
+	* testsuite/30_threads/shared_lock/cons/6.cc: Likewise.
+	* testsuite/30_threads/shared_lock/locking/1.cc: Likewise.
+	* testsuite/30_threads/shared_lock/locking/2.cc: Likewise.
+	* testsuite/30_threads/shared_lock/locking/3.cc: Likewise.
+	* testsuite/30_threads/shared_lock/locking/4.cc: Likewise.
+	* testsuite/30_threads/shared_lock/modifiers/1.cc: Likewise.
+	* testsuite/30_threads/shared_mutex/cons/1.cc: Likewise.
+	* testsuite/30_threads/shared_mutex/try_lock/1.cc: Likewise.
+	* testsuite/30_threads/shared_mutex/try_lock/2.cc: Likewise.
+	* testsuite/30_threads/shared_mutex/unlock/1.cc: Likewise.
+	* testsuite/30_threads/shared_timed_mutex/cons/1.cc: Likewise.
+	* testsuite/30_threads/shared_timed_mutex/try_lock/1.cc: Likewise.
+	* testsuite/30_threads/shared_timed_mutex/try_lock/2.cc: Likewise.
+	* testsuite/30_threads/shared_timed_mutex/try_lock/3.cc: Likewise.
+	* testsuite/30_threads/shared_timed_mutex/unlock/1.cc: Likewise.
+	* testsuite/30_threads/this_thread/1.cc: Likewise.
+	* testsuite/30_threads/this_thread/sleep_for-mt.cc: Likewise.
+	* testsuite/30_threads/this_thread/sleep_until-mt.cc: Likewise.
+	* testsuite/30_threads/thread/cons/1.cc: Likewise.
+	* testsuite/30_threads/thread/cons/2.cc: Likewise.
+	* testsuite/30_threads/thread/cons/3.cc: Likewise.
+	* testsuite/30_threads/thread/cons/4.cc: Likewise.
+	* testsuite/30_threads/thread/cons/49668.cc: Likewise.
+	* testsuite/30_threads/thread/cons/5.cc: Likewise.
+	* testsuite/30_threads/thread/cons/6.cc: Likewise.
+	* testsuite/30_threads/thread/cons/7.cc: Likewise.
+	* testsuite/30_threads/thread/cons/8.cc: Likewise.
+	* testsuite/30_threads/thread/cons/9.cc: Likewise.
+	* testsuite/30_threads/thread/cons/moveable.cc: Likewise.
+	* testsuite/30_threads/thread/cons/terminate.cc: Likewise.
+	* testsuite/30_threads/thread/members/1.cc: Likewise.
+	* testsuite/30_threads/thread/members/2.cc: Likewise.
+	* testsuite/30_threads/thread/members/3.cc: Likewise.
+	* testsuite/30_threads/thread/members/4.cc: Likewise.
+	* testsuite/30_threads/thread/members/5.cc: Likewise.
+	* testsuite/30_threads/thread/members/hardware_concurrency.cc:
+	Likewise.
+	* testsuite/30_threads/thread/native_handle/typesizes.cc: Likewise.
+	* testsuite/30_threads/thread/swap/1.cc: Likewise.
+	* testsuite/30_threads/timed_mutex/cons/1.cc: Likewise.
+	* testsuite/30_threads/timed_mutex/dest/destructor_locked.cc:
+	Likewise.
+	* testsuite/30_threads/timed_mutex/lock/1.cc: Likewise.
+	* testsuite/30_threads/timed_mutex/native_handle/1.cc: Likewise.
+	* testsuite/30_threads/timed_mutex/native_handle/typesizes.cc:
+	Likewise.
+	* testsuite/30_threads/timed_mutex/try_lock/1.cc: Likewise.
+	* testsuite/30_threads/timed_mutex/try_lock/2.cc: Likewise.
+	* testsuite/30_threads/timed_mutex/try_lock_for/1.cc: Likewise.
+	* testsuite/30_threads/timed_mutex/try_lock_for/2.cc: Likewise.
+	* testsuite/30_threads/timed_mutex/try_lock_for/3.cc: Likewise.
+	* testsuite/30_threads/timed_mutex/try_lock_until/1.cc: Likewise.
+	* testsuite/30_threads/timed_mutex/try_lock_until/2.cc: Likewise.
+	* testsuite/30_threads/timed_mutex/try_lock_until/57641.cc: Likewise.
+	* testsuite/30_threads/timed_mutex/unlock/1.cc: Likewise.
+	* testsuite/30_threads/timed_mutex/unlock/2.cc: Likewise.
+	* testsuite/30_threads/try_lock/1.cc: Likewise.
+	* testsuite/30_threads/try_lock/2.cc: Likewise.
+	* testsuite/30_threads/try_lock/3.cc: Likewise.
+	* testsuite/30_threads/try_lock/4.cc: Likewise.
+	* testsuite/30_threads/unique_lock/cons/1.cc: Likewise.
+	* testsuite/30_threads/unique_lock/cons/2.cc: Likewise.
+	* testsuite/30_threads/unique_lock/cons/3.cc: Likewise.
+	* testsuite/30_threads/unique_lock/cons/4.cc: Likewise.
+	* testsuite/30_threads/unique_lock/cons/5.cc: Likewise.
+	* testsuite/30_threads/unique_lock/cons/6.cc: Likewise.
+	* testsuite/30_threads/unique_lock/locking/1.cc: Likewise.
+	* testsuite/30_threads/unique_lock/locking/2.cc: Likewise.
+	* testsuite/30_threads/unique_lock/locking/3.cc: Likewise.
+	* testsuite/30_threads/unique_lock/locking/4.cc: Likewise.
+	* testsuite/30_threads/unique_lock/modifiers/1.cc: Likewise.
+
 2020-08-21  Jonathan Wakely  <jwakely@redhat.com>
 
 	PR libstdc++/96736