[PATCH] D125220: [InstCombine] (rot X, ?) == 0/-1 --> X == 0/-1

[Sanjay Patel via Phabricator via llvm-commits]

spatel accepted this revision.
spatel added a comment.

LGTM - if you are planning to enhance more folds to allow undef in vector constants, please test correctness with Alive2. It is true that there are more folds like this, but it is not correct to propagate undef elements in general.
Please wait for @RKSimon for final approval.


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https://reviews.llvm.org/D125220