[PATCH] D72396: [InstCombine] fold zext of masked bit set/clear

Nikita Popov via Phabricator via llvm-commits llvm-commits at lists.llvm.org
Wed Jan 8 15:19:15 PST 2020

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nikic added a comment.

Very nice! People have been talking about those select folds being unsound for a long time, but I think this is the first time they cause a real-life miscompile...


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https://reviews.llvm.org/D72396

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