[PATCH] D41835: [MachineCopyPropagation] Extend pass to do COPY source forwarding

[Nicolai Hähnle via Phabricator via llvm-commits]

nhaehnle added a comment.

The changes to AMDGPU tests and .td files look good to me.

It would be nice for the backend to have a hook that can be queried when renamable is false (but obviously this current patch doesn't have to introduce that).


Repository:
  rL LLVM

https://reviews.llvm.org/D41835