diff options
Diffstat (limited to 'gcc/config/i386/i386.h')
| -rw-r--r-- | gcc/config/i386/i386.h | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/gcc/config/i386/i386.h b/gcc/config/i386/i386.h index 030b72d0b58..67cae2cc85b 100644 --- a/gcc/config/i386/i386.h +++ b/gcc/config/i386/i386.h @@ -426,7 +426,7 @@ extern unsigned char ix86_tune_features[X86_TUNE_LAST]; /* Feature tests against the various architecture variations. */ enum ix86_arch_indices { - X86_ARCH_CMOVE, /* || TARGET_SSE */ + X86_ARCH_CMOV, X86_ARCH_CMPXCHG, X86_ARCH_CMPXCHG8B, X86_ARCH_XADD, @@ -437,12 +437,17 @@ enum ix86_arch_indices { extern unsigned char ix86_arch_features[X86_ARCH_LAST]; -#define TARGET_CMOVE ix86_arch_features[X86_ARCH_CMOVE] +#define TARGET_CMOV ix86_arch_features[X86_ARCH_CMOV] #define TARGET_CMPXCHG ix86_arch_features[X86_ARCH_CMPXCHG] #define TARGET_CMPXCHG8B ix86_arch_features[X86_ARCH_CMPXCHG8B] #define TARGET_XADD ix86_arch_features[X86_ARCH_XADD] #define TARGET_BSWAP ix86_arch_features[X86_ARCH_BSWAP] +/* For sane SSE instruction set generation we need fcomi instruction. + It is safe to enable all CMOVE instructions. Also, RDRAND intrinsic + expands to a sequence that includes conditional move. */ +#define TARGET_CMOVE (TARGET_CMOV || TARGET_SSE || TARGET_RDRND) + #define TARGET_FISTTP (TARGET_SSE3 && TARGET_80387) extern int x86_prefetch_sse; |