[PATCH] D158167: [AMDGPU] Handle isUndef flag in LiveVariables::recomputeForSingleDefVirtReg

[Valery Pykhtin via Phabricator via llvm-commits]

vpykhtin updated this revision to Diff 555924.
vpykhtin added a comment.
Herald added a subscriber: MatzeB.

- Rebased.
- Added tests.

Tests have revealed another bug:

MachineInstr::readsRegister doesn't check isUndef flag, I've replaced it with readsWritesVirtualRegister(Reg).


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D158167/new/

https://reviews.llvm.org/D158167

Files:
  llvm/lib/CodeGen/LiveVariables.cpp
  llvm/unittests/MI/LiveIntervalTest.cpp

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