[PATCH] D128110: AMDGPU: Don't delete cndmask with multiple uses in exec mask fold

[Matt Arsenault via Phabricator via llvm-commits]

arsenm created this revision.
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This was checking if this instruction killed it, but other uses
could appear before the kill.


https://reviews.llvm.org/D128110

Files:
  llvm/lib/Target/AMDGPU/SIOptimizeExecMaskingPreRA.cpp
  llvm/test/CodeGen/AMDGPU/no-live-segment-at-use.mir
  llvm/test/CodeGen/AMDGPU/opt-exec-masking-pre-ra-update-liveness.mir

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