Displaying 2 results from an estimated 2 matches for "featuresse42".
2009 Apr 30
2
[LLVMdev] RFC: AVX Feature Specification
..."Enable fused multiply-add">;
def FeatureAVX : SubtargetFeature<"avx", "X86AVX", "true", // Cray
"Enable AVX instructions",
[FeatureSSE42, FeatureYMM, FeatureVEX]>;
YMM, VEX and FMA are all separate features detectable through CPUID.
The key question here is whether making X86AVX a boolean feature flag separate
from X86SSELevel is reasonable.
As I've been going along I've added feature flags for SSE4a and SSE5. These...
2009 Apr 30
0
[LLVMdev] RFC: AVX Feature Specification
..."Enable fused multiply-add">;
> def FeatureAVX : SubtargetFeature<"avx", "X86AVX", "true", // Cray
> "Enable AVX instructions",
> [FeatureSSE42, FeatureYMM,
> FeatureVEX]>;
>
> YMM, VEX and FMA are all separate features detectable through CPUID.
>
> The key question here is whether making X86AVX a boolean feature
> flag separate
> from X86SSELevel is reasonable.
It sounds reasonable to me.
>
>
> As I&...