[PATCH] D150381: [AMDGPU] Add optional tied-op for wwm-register's epilog spill restore

[Christudasan Devadasan via Phabricator via llvm-commits]

cdevadas updated this revision to Diff 522256.
cdevadas added a comment.

Used MachineInstr::readsRegister to check if RETURN instruction reads the spill-reg.
Also, added more tests.


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D150381/new/

https://reviews.llvm.org/D150381

Files:
  llvm/lib/Target/AMDGPU/SIRegisterInfo.cpp
  llvm/test/CodeGen/AMDGPU/preserve-only-inactive-lane.mir
  llvm/test/CodeGen/AMDGPU/tied-op-for-wwm-scratch-reg-spill-restore.mir

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