[PATCH] D118566: [LoopVectorizer] Don't perform interleaving of predicated scalar loops

[Tiehu Zhang via Phabricator via llvm-commits]

TiehuZhang added a comment.
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Hi, @dmgreen, is it necessary to add `ScalarInterleavingRequiresPredication ` to the guard of `AggressivelyInterleaveReductions `? I met some case that the current patch wants to prevent from interleaving but still be interleaved, as `AggressivelyInterleaveReductions` is enabled on our target.

  if (AggressivelyInterleaveReductions && !ScalarInterleavingRequiresPredication) {
    LLVM_DEBUG(dbgs() << "LV: Interleaving to expose ILP.\n");
    return IC;
  }


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