[PATCH] D100684: [X86][CostModel] X86TTIImpl::getMemoryOpCost(): rewrite vector handling again
Simon Pilgrim via Phabricator via llvm-commits
llvm-commits at lists.llvm.org
Wed May 12 07:48:55 PDT 2021
RKSimon added a comment.
IIRC the need for those interleaved costs was because we couldn't determine accurate 'lane crossing' vs 'non lane crossing' general shuffle costs - now that we have access to the shuffle mask it might be possible to recognise these a little better.
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https://reviews.llvm.org/D100684/new/
https://reviews.llvm.org/D100684
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