[PATCH] D121903: [MachineCopyPropagation] More robust isForwardableRegClassCopy

[Jay Foad via Phabricator via llvm-commits]

foad added a comment.

> Would this disallow AGPR to AGPR copy propagation completely on sub-targets with no AGPR->AGPR copy capability?

You're right, it does. I have added a test case for this and rebased the patch to show the effect. I will work on this.


Repository:
  rG LLVM Github Monorepo

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  https://reviews.llvm.org/D121903/new/

https://reviews.llvm.org/D121903