[PATCH] D139852: [amdgpu] Lower CopyToReg into SGPR explicitly to avoid illegal vgpr to sgpr copy

[Alexander via Phabricator via llvm-commits]

alex-t added a comment.

Since we ensure all the VGPR to SGPR copies are uniform, we just need to V_READFIRSTLANE_B32 here.


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D139852/new/

https://reviews.llvm.org/D139852