CODEWITHSUNDEEP
assemblyavx
huseyin tugrul buyukisik
huseyin tugrul buyukisik

Reputation: 11916

Does vmovd have avx-sse transition penalty?

(Assuming there are many avx instructions before and after movd)If I use vmovd to move data between general purpose registers and ymm registers, does it get slower because of using only 1 float value of ymm?

Upvotes: 0

Views: 273

Answers (1)

fuz
fuz

Reputation: 93082

The avx-sse transition penalty only applies when you execute non-VEX encoded SSE instructions and SSE-encoded instructions. As long as you use vmovd instead of, say, movd, everything should be fine.

Upvotes: 2

Related Questions