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

[Jay Foad via Phabricator via llvm-commits]

foad added inline comments.


================
Comment at: llvm/lib/CodeGen/LiveVariables.cpp:728
         break;
-      if (MI.readsRegister(Reg)) {
+      if (MI.readsWritesVirtualRegister(Reg).first) {
         assert(!MI.killsRegister(Reg));
----------------
This is just readsVirtualRegister


Repository:
  rG LLVM Github Monorepo

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

https://reviews.llvm.org/D158167