[PATCH] D136718: AMDGPU: Fix assert when trying to overextend liverange

[Matt Arsenault via Phabricator via llvm-commits]

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This was trying to add segments beyond the new and use,
so skip additional segments.

      

This would hit (S < E && "Cannot create empty or backwards segment").


https://reviews.llvm.org/D136718

Files:
  llvm/lib/Target/AMDGPU/SIOptimizeExecMaskingPreRA.cpp
  llvm/test/CodeGen/AMDGPU/exec-mask-opt-cannot-create-empty-or-backward-segment.ll
  llvm/test/CodeGen/AMDGPU/opt-exec-masking-pre-ra-update-liveness.mir

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