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| author | Ivan Maidanski <ivmai@mail.ru> | 2013-03-29 08:55:13 +0400 |
|---|---|---|
| committer | Ivan Maidanski <ivmai@mail.ru> | 2013-03-29 17:56:44 +0400 |
| commit | a3b07048d62f6e247286dc6a9c2d757f2cdc0531 (patch) | |
| tree | 64f86790b76b257c3bae96d303680c94377df054 | |
| parent | 556e6348fc490f6f825c9304fae551a50ce6de3e (diff) | |
| download | libatomic_ops-a3b07048d62f6e247286dc6a9c2d757f2cdc0531.tar.gz | |
Generalize double_load/store for x86_64 (GCC)
* src/atomic_ops.h (AO_GENERALIZE_TWICE): Define in case of missing
double-wide load or store primitives while double-wide CAS is present
(required for x86-64, at least).
| -rw-r--r-- | src/atomic_ops.h | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/src/atomic_ops.h b/src/atomic_ops.h index e468e5e..33fe00e 100644 --- a/src/atomic_ops.h +++ b/src/atomic_ops.h @@ -391,6 +391,12 @@ /* of iterations, usually one. */ #include "atomic_ops/generalize.h" +#if !defined(AO_GENERALIZE_TWICE) \ + && defined(AO_HAVE_compare_double_and_swap_double) \ + && (!defined(AO_HAVE_double_load) || !defined(AO_HAVE_double_store)) +# define AO_GENERALIZE_TWICE +#endif + #ifdef AO_T_IS_INT /* Included after the first generalization pass. */ # include "atomic_ops/sysdeps/ao_t_is_int.h" |