[PATCH] D157621: [CHR] Fix up phi nodes with unreachable predecessors (PR64594)

[Nikita Popov via Phabricator via llvm-commits]

nikic updated this revision to Diff 550239.
nikic added a comment.

Avoid single-iteration loop.


CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D157621/new/

https://reviews.llvm.org/D157621

Files:
  llvm/include/llvm/Analysis/RegionInfoImpl.h
  llvm/lib/Transforms/Instrumentation/ControlHeightReduction.cpp
  llvm/test/Transforms/PGOProfile/chr-dead-pred.ll
  llvm/test/Transforms/StructurizeCFG/AMDGPU/backedge-id-bug-xfail.ll
  llvm/test/Transforms/StructurizeCFG/AMDGPU/backedge-id-bug.ll

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