Ping.
> From: Hans-Peter Nilsson <h...@axis.com>
> Date: Wed, 4 Oct 2023 19:08:16 +0200
>
> s/atomic-exchange/atomic-cmpxchg-word/g.
> Tested as v1.
>
> Ok to commit?
> -- >8 --
> These tests actually use a form of atomic compare and exchange
> operation, not just atomic loading and storing. Some targets (not
> supported by e.g. libatomic) have atomic loading and storing, but not
> compare and exchange, yielding linker errors for missing library
> functions.
>
> This change is just for existing uses of
> dg-require-thread-fence. It does not fix any other tests
> that should also be gated on dg-require-atomic-cmpxchg-word.
>
> * testsuite/29_atomics/atomic/compare_exchange_padding.cc,
> testsuite/29_atomics/atomic_flag/clear/1.cc,
> testsuite/29_atomics/atomic_flag/cons/value_init.cc,
> testsuite/29_atomics/atomic_flag/test_and_set/explicit.cc,
> testsuite/29_atomics/atomic_flag/test_and_set/implicit.cc,
> testsuite/29_atomics/atomic_ref/compare_exchange_padding.cc,
> testsuite/29_atomics/atomic_ref/generic.cc,
> testsuite/29_atomics/atomic_ref/integral.cc,
> testsuite/29_atomics/atomic_ref/pointer.cc: Replace
> dg-require-thread-fence with dg-require-atomic-cmpxchg-word.
> ---
> .../testsuite/29_atomics/atomic/compare_exchange_padding.cc | 2 +-
> libstdc++-v3/testsuite/29_atomics/atomic_flag/clear/1.cc | 2 +-
> .../testsuite/29_atomics/atomic_flag/cons/value_init.cc | 2 +-
> .../testsuite/29_atomics/atomic_flag/test_and_set/explicit.cc | 2 +-
> .../testsuite/29_atomics/atomic_flag/test_and_set/implicit.cc | 2 +-
> .../testsuite/29_atomics/atomic_ref/compare_exchange_padding.cc | 2 +-
> libstdc++-v3/testsuite/29_atomics/atomic_ref/generic.cc | 2 +-
> libstdc++-v3/testsuite/29_atomics/atomic_ref/integral.cc | 2 +-
> libstdc++-v3/testsuite/29_atomics/atomic_ref/pointer.cc | 2 +-
> 9 files changed, 9 insertions(+), 9 deletions(-)
>
> diff --git
> a/libstdc++-v3/testsuite/29_atomics/atomic/compare_exchange_padding.cc
> b/libstdc++-v3/testsuite/29_atomics/atomic/compare_exchange_padding.cc
> index 01f7475631e6..859629e625f8 100644
> --- a/libstdc++-v3/testsuite/29_atomics/atomic/compare_exchange_padding.cc
> +++ b/libstdc++-v3/testsuite/29_atomics/atomic/compare_exchange_padding.cc
> @@ -1,5 +1,5 @@
> // { dg-do run { target c++20 } }
> -// { dg-require-thread-fence "" }
> +// { dg-require-atomic-cmpxchg-word "" }
> // { dg-add-options libatomic }
>
> #include <atomic>
> diff --git a/libstdc++-v3/testsuite/29_atomics/atomic_flag/clear/1.cc
> b/libstdc++-v3/testsuite/29_atomics/atomic_flag/clear/1.cc
> index 89ed381fe057..2e154178dbd7 100644
> --- a/libstdc++-v3/testsuite/29_atomics/atomic_flag/clear/1.cc
> +++ b/libstdc++-v3/testsuite/29_atomics/atomic_flag/clear/1.cc
> @@ -1,5 +1,5 @@
> // { dg-do run { target c++11 } }
> -// { dg-require-thread-fence "" }
> +// { dg-require-atomic-cmpxchg-word "" }
>
> // Copyright (C) 2009-2023 Free Software Foundation, Inc.
> //
> diff --git a/libstdc++-v3/testsuite/29_atomics/atomic_flag/cons/value_init.cc
> b/libstdc++-v3/testsuite/29_atomics/atomic_flag/cons/value_init.cc
> index f3f38b54dbcd..6439873be133 100644
> --- a/libstdc++-v3/testsuite/29_atomics/atomic_flag/cons/value_init.cc
> +++ b/libstdc++-v3/testsuite/29_atomics/atomic_flag/cons/value_init.cc
> @@ -16,7 +16,7 @@
> // <http://www.gnu.org/licenses/>.
>
> // { dg-do run { target c++20 } }
> -// { dg-require-thread-fence "" }
> +// { dg-require-atomic-cmpxchg-word "" }
>
> #include <atomic>
> #include <testsuite_hooks.h>
> diff --git
> a/libstdc++-v3/testsuite/29_atomics/atomic_flag/test_and_set/explicit.cc
> b/libstdc++-v3/testsuite/29_atomics/atomic_flag/test_and_set/explicit.cc
> index 6f723eb5f4e7..6cb1ae2b6dda 100644
> --- a/libstdc++-v3/testsuite/29_atomics/atomic_flag/test_and_set/explicit.cc
> +++ b/libstdc++-v3/testsuite/29_atomics/atomic_flag/test_and_set/explicit.cc
> @@ -1,5 +1,5 @@
> // { dg-do run { target c++11 } }
> -// { dg-require-thread-fence "" }
> +// { dg-require-atomic-cmpxchg-word "" }
>
> // Copyright (C) 2008-2023 Free Software Foundation, Inc.
> //
> diff --git
> a/libstdc++-v3/testsuite/29_atomics/atomic_flag/test_and_set/implicit.cc
> b/libstdc++-v3/testsuite/29_atomics/atomic_flag/test_and_set/implicit.cc
> index 6f723eb5f4e7..6cb1ae2b6dda 100644
> --- a/libstdc++-v3/testsuite/29_atomics/atomic_flag/test_and_set/implicit.cc
> +++ b/libstdc++-v3/testsuite/29_atomics/atomic_flag/test_and_set/implicit.cc
> @@ -1,5 +1,5 @@
> // { dg-do run { target c++11 } }
> -// { dg-require-thread-fence "" }
> +// { dg-require-atomic-cmpxchg-word "" }
>
> // Copyright (C) 2008-2023 Free Software Foundation, Inc.
> //
> diff --git
> a/libstdc++-v3/testsuite/29_atomics/atomic_ref/compare_exchange_padding.cc
> b/libstdc++-v3/testsuite/29_atomics/atomic_ref/compare_exchange_padding.cc
> index 2a3d1d468c22..25ccd2e94336 100644
> --- a/libstdc++-v3/testsuite/29_atomics/atomic_ref/compare_exchange_padding.cc
> +++ b/libstdc++-v3/testsuite/29_atomics/atomic_ref/compare_exchange_padding.cc
> @@ -1,5 +1,5 @@
> // { dg-do run { target c++20 } }
> -// { dg-require-thread-fence "" }
> +// { dg-require-atomic-cmpxchg-word "" }
> // { dg-add-options libatomic }
>
> #include <atomic>
> diff --git a/libstdc++-v3/testsuite/29_atomics/atomic_ref/generic.cc
> b/libstdc++-v3/testsuite/29_atomics/atomic_ref/generic.cc
> index f8751756d02c..c342b1aae292 100644
> --- a/libstdc++-v3/testsuite/29_atomics/atomic_ref/generic.cc
> +++ b/libstdc++-v3/testsuite/29_atomics/atomic_ref/generic.cc
> @@ -16,7 +16,7 @@
> // <http://www.gnu.org/licenses/>.
>
> // { dg-do run { target c++20 } }
> -// { dg-require-thread-fence "" }
> +// { dg-require-atomic-cmpxchg-word "" }
> // { dg-add-options libatomic }
>
> #include <atomic>
> diff --git a/libstdc++-v3/testsuite/29_atomics/atomic_ref/integral.cc
> b/libstdc++-v3/testsuite/29_atomics/atomic_ref/integral.cc
> index eb22afca03a2..134fb16506c3 100644
> --- a/libstdc++-v3/testsuite/29_atomics/atomic_ref/integral.cc
> +++ b/libstdc++-v3/testsuite/29_atomics/atomic_ref/integral.cc
> @@ -16,7 +16,7 @@
> // <http://www.gnu.org/licenses/>.
>
> // { dg-do run { target c++20 } }
> -// { dg-require-thread-fence "" }
> +// { dg-require-atomic-cmpxchg-word "" }
> // { dg-add-options libatomic }
>
> #include <atomic>
> diff --git a/libstdc++-v3/testsuite/29_atomics/atomic_ref/pointer.cc
> b/libstdc++-v3/testsuite/29_atomics/atomic_ref/pointer.cc
> index 6fe00b557567..fd26a053151f 100644
> --- a/libstdc++-v3/testsuite/29_atomics/atomic_ref/pointer.cc
> +++ b/libstdc++-v3/testsuite/29_atomics/atomic_ref/pointer.cc
> @@ -16,7 +16,7 @@
> // <http://www.gnu.org/licenses/>.
>
> // { dg-do run { target c++20 } }
> -// { dg-require-thread-fence "" }
> +// { dg-require-atomic-cmpxchg-word "" }
> // { dg-add-options libatomic }
>
> #include <atomic>
> --
> 2.30.2
>
