[PATCH] D44177: [JumpThreading] use UnreachableBlocks to avoid unreachable regions

[Brian Rzycki via Phabricator via llvm-commits]

brzycki updated this revision to Diff 138705.
brzycki added a comment.

Comment cleanup and rebase. NFC.


https://reviews.llvm.org/D44177

Files:
  llvm/lib/Transforms/Scalar/JumpThreading.cpp
  llvm/test/Transforms/JumpThreading/pr15851_hang.ll
  llvm/test/Transforms/JumpThreading/select.ll

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