[PATCH] D134142: [InstSimplify] Fold `select C, not(C), C` to zero

[Sanjay Patel via Phabricator via llvm-commits]

spatel added a comment.

This match seems over-specified. If either the true or false arm of the select are cast from the select condition, then we can replace that arm in -instcombine, and it should collapse to zero when both arms match:
https://alive2.llvm.org/ce/z/35kadA


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  https://reviews.llvm.org/D134142/new/

https://reviews.llvm.org/D134142