[PATCH] D83360: [InstSimplify] Remove select ?, undef, X -> X and select ?, X, undef -> X

[Roman Lebedev via Phabricator via llvm-commits]

lebedev.ri added a comment.

In D83360#2138386 <https://reviews.llvm.org/D83360#2138386>, @nlopes wrote:

> Here's an end-to-end miscompilation: https://bugs.llvm.org/show_bug.cgi?id=31633


Sure, but we still need to have a test with comment that it should not be folded, referencing all this.


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https://reviews.llvm.org/D83360