diff options
| author | amacleod <amacleod@138bc75d-0d04-0410-961f-82ee72b054a4> | 2011-11-07 20:06:39 +0000 |
|---|---|---|
| committer | amacleod <amacleod@138bc75d-0d04-0410-961f-82ee72b054a4> | 2011-11-07 20:06:39 +0000 |
| commit | 8808bf16125e1bea5cd2e969d19a53b9618593f1 (patch) | |
| tree | deab25b73551eb04852240c97020eb3e7a1060c6 /gcc/expr.h | |
| parent | 6df74ab4271c036e5c80aa5b67104c98c0dda1d5 (diff) | |
| download | gcc-8808bf16125e1bea5cd2e969d19a53b9618593f1.tar.gz | |
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.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@181111 138bc75d-0d04-0410-961f-82ee72b054a4
Diffstat (limited to 'gcc/expr.h')
| -rw-r--r-- | gcc/expr.h | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/gcc/expr.h b/gcc/expr.h index 1623ad97a73..2cc8152c740 100644 --- a/gcc/expr.h +++ b/gcc/expr.h @@ -215,9 +215,9 @@ rtx emit_conditional_add (rtx, enum rtx_code, rtx, rtx, enum machine_mode, rtx expand_sync_operation (rtx, rtx, enum rtx_code); rtx expand_sync_fetch_operation (rtx, rtx, enum rtx_code, bool, rtx); -rtx expand_atomic_exchange (rtx, rtx, rtx, enum memmodel); +rtx expand_atomic_exchange (rtx, rtx, rtx, enum memmodel, bool); rtx expand_atomic_load (rtx, rtx, enum memmodel); -rtx expand_atomic_store (rtx, rtx, enum memmodel); +rtx expand_atomic_store (rtx, rtx, enum memmodel, bool); rtx expand_atomic_fetch_op (rtx, rtx, rtx, enum rtx_code, enum memmodel, bool); void expand_atomic_thread_fence (enum memmodel); |