[PATCH] D68184: AMDGPU: Propagate undef flag during pre-RA exec mask optimizations

[Matt Arsenault via Phabricator via llvm-commits]

arsenm added inline comments.


================
Comment at: llvm/lib/Target/AMDGPU/SIOptimizeExecMaskingPreRA.cpp:262
+          .addReg(ExecReg)
+          .addReg(CCReg, CC->isUndef() ? RegState::Undef : 0, CC->getSubReg());
   And->eraseFromParent();
----------------
I think there’s a getUndef


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D68184/new/

https://reviews.llvm.org/D68184