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| author | Andrew MacLeod <amacleod@redhat.com> | 2011-11-07 20:06:39 +0000 |
|---|---|---|
| committer | Andrew Macleod <amacleod@gcc.gnu.org> | 2011-11-07 20:06:39 +0000 |
| commit | 0669295b1e7991bb5465267d4bd06576883e648b (patch) | |
| tree | deab25b73551eb04852240c97020eb3e7a1060c6 /gcc/omp-low.c | |
| parent | fd83db3d51f6379186a012f817d1f1ed003500b0 (diff) | |
| download | gcc-0669295b1e7991bb5465267d4bd06576883e648b.zip gcc-0669295b1e7991bb5465267d4bd06576883e648b.tar.gz gcc-0669295b1e7991bb5465267d4bd06576883e648b.tar.bz2 | |
atomic_base.h (atomic_thread_fence): Call builtin.
2011-11-07 Andrew MacLeod <amacleod@redhat.com>
libstdc++-v3
* 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.
gcc
* doc/extend.texi: Docuemnt behaviour change for __atomic_exchange and
__atomic_store.
* optabs.c (expand_atomic_exchange): Expand to __sync_lock_test_and_set
only when originated from that builtin.
(expand_atomic_store): Expand to __sync_lock_release when originated
from that builtin.
* builtins.c (expand_builtin_sync_lock_test_and_set): Add flag that
expand_atomic_exchange call originated from here.
(expand_builtin_sync_lock_release): Add flag that expand_atomic_store
call originated from here.
(expand_builtin_atomic_exchange): Add origination flag.
(expand_builtin_atomic_store): Add origination flag.
* expr.h (expand_atomic_exchange, expand_atomic_store): Add boolean
parameters to indicate implementation fall back options.
From-SVN: r181111
Diffstat (limited to 'gcc/omp-low.c')
0 files changed, 0 insertions, 0 deletions