[PATCH] D22952: [LoopVectorize] Detect loops in the innermost loop before creating InnerLoopVectorizer

[Tim Shen via llvm-commits]

timshen created this revision.
timshen added reviewers: nadav, chandlerc, bkramer, dblaikie.
timshen added a subscriber: llvm-commits.
Herald added a subscriber: mzolotukhin.

InnerLoopVectorizer shouldn't handle a loop with cycles inside the loop
body, even if that cycle isn't a natural loop.

Fixes PR28541.

https://reviews.llvm.org/D22952

Files:
  lib/Transforms/Vectorize/LoopVectorize.cpp
  test/Transforms/LoopVectorize/pr28541.ll

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