[PATCH] D111029: [X86] Prefer 512-bit vectors on Ice Lake Server cpus (PR48336)

[Phoebe Wang via Phabricator via llvm-commits]

pengfei added a comment.

Hi @RKSimon , our internal tests showed ~1% geomean degradation in spec 2017 on Ice Lake Server compared to 256-bit vectors. So I'd suggest we still prefer 256-bit vectors for it.


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https://reviews.llvm.org/D111029