[PATCH] D73317: [GISelKnownBits] Add support for PHIs

[Quentin Colombet via Phabricator via llvm-commits]

qcolombet added a comment.

Thanks @arsenm for the review!

> You could potentially want to write code that relied on an instruction definitely being inserted

As long as it doesn't need to be a new one, we could return the definition of the source.
But agree, some places actually expect that we produce a new register and that's not going to be an easy fix.


Repository:
  rG LLVM Github Monorepo

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https://reviews.llvm.org/D73317