[PATCH] D149651: [UnreachableBlockElim] Don't remove LCSSA phi nodes

[Jay Foad via Phabricator via llvm-commits]

foad added inline comments.


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Comment at: llvm/lib/Target/AMDGPU/SILowerControlFlow.cpp:430-431
           .add(MI.getOperand(0));
+  if (LV)
+    LV->replaceKillInstruction(MI.getOperand(0).getReg(), MI, *AndN2);
 
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I can submit this separately, but I guess I would have to come up with a MIR test case. I am not sure why the change to UnreachableBlockElim exposed this problem.


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D149651/new/

https://reviews.llvm.org/D149651