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Use AVX2 only if AVX is also present

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This commit is contained in:
Evgenii Stratonikov 2019-10-09 17:52:58 +03:00
parent 648b1deca7
commit fc059cac87
1 changed files with 4 additions and 2 deletions
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6
tz/hash.go
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@ -24,8 +24,10 @@ const (
) )
var ( var (
hasAVX = cpuid.HasAVX() hasAVX = cpuid.HasAVX()
hasAVX2 = cpuid.HasAVX2() // Having AVX2 does not guarantee
// that AVX is also present.
hasAVX2 = cpuid.HasAVX2() && hasAVX
) )
func (impl Implementation) String() string { func (impl Implementation) String() string {