diff options
| -rw-r--r-- | src/atomic_ops/sysdeps/gcc/x86.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/src/atomic_ops/sysdeps/gcc/x86.h b/src/atomic_ops/sysdeps/gcc/x86.h index 62b50c9..db66dda 100644 --- a/src/atomic_ops/sysdeps/gcc/x86.h +++ b/src/atomic_ops/sysdeps/gcc/x86.h @@ -114,6 +114,10 @@ AO_short_fetch_and_add_full (volatile unsigned short *p, unsigned short incr) : "memory"); } # define AO_HAVE_xor_full + + /* AO_store_full could be implemented directly using "xchg" but it */ + /* could be generalized efficiently as an ordinary store accomplished */ + /* with AO_nop_full ("mfence" instruction). */ #endif /* !AO_PREFER_GENERALIZED */ AO_INLINE AO_TS_VAL_t |