[PATCH] D28874: [AMDGPU] Add VGPR copies post regalloc fix pass

[Matt Arsenault via Phabricator via llvm-commits]

arsenm added a comment.

Why is this necessary? I've been trying to avoid this. This isn't a question for only copies, any of the generic instructions need to be usually considered VALU. With exec writes as scheduling barriers, I don't think this should be needed


Repository:
  rL LLVM

https://reviews.llvm.org/D28874