[PATCH] D74268: [X86] Add back fmaddsub intrinsics to work towards fixing the strict fp implementation
Simon Pilgrim via Phabricator via llvm-commits
llvm-commits at lists.llvm.org
Thu Feb 20 10:11:16 PST 2020
RKSimon added a comment.
I agree that its unlikely we won't lose much combine potential - we could add demanded elts support to simplify to fmadd/fmsub but that isn't that likely tbh.
Can the the fmsubadd variants still safely use the fneg ?
Are we missing AVX512 FMADDSUB_RND variants?
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https://reviews.llvm.org/D74268/new/
https://reviews.llvm.org/D74268
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