http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51026
--- Comment #1 from Francois-Xavier Coudert <fxcoudert at gcc dot gnu.org>
2011-11-08 08:06:07 UTC ---
Should have added: this is with trunk revision , and probably due to
2011-11-07 Andrew MacLeod <amacl...@redhat.com>
* include/bits/atomic_base.h (atomic_thread_fence): Revert.
(atomic_signal_fence): Revert.
2011-11-07 Andrew MacLeod <amacl...@redhat.com>
* include/bits/atomic_base.h (atomic_thread_fence): Call builtin.
(atomic_signal_fence): Call builtin.
(atomic_flag::test_and_set): Call __atomic_exchange when it is
lockfree,
otherwise fall back to call __sync_lock_test_and_set.
(atomic_flag::clear): Call __atomic_store when it is lockfree,
otherwise fall back to call __sync_lock_release.
