[PATCH] D118843: [x86] avoid false dependency stall on 'sbb' with same source reg

Craig Topper via Phabricator via llvm-commits llvm-commits at lists.llvm.org
Wed Feb 2 14:13:36 PST 2022

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craig.topper added a comment.

I think I prefer the opposite tuning flag polarity. It's not truely a false dep. It's more of a missed special case. The semantics of SBB imply the sources are read.


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https://reviews.llvm.org/D118843

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