[PATCH] D81013: [InstCombine] move vector select ahead of select-shuffle

[Roman Lebedev via Phabricator via llvm-commits]

lebedev.ri added a comment.

That being said, i do not understand how we can end up with non-`-1` widening element,
https://godbolt.org/z/nBhmko <- impossible as per `ShuffleVectorInst::isValidOperands()`.

So i'd like to see a reproducer.


Repository:
  rG LLVM Github Monorepo

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  https://reviews.llvm.org/D81013/new/

https://reviews.llvm.org/D81013