[PATCH] D149742: [SLP]Improve isGatherShuffledEntry by trying per-register shuffle.

[Zequan Wu via Phabricator via llvm-commits]

zequanwu added a comment.

Hi, this reland causes crash: https://github.com/llvm/llvm-project/commit/196d154ab7a76e8ccb11addf61ff53387e397130.

  ld.lld: /b/s/w/ir/cache/builder/src/third_party/llvm/llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp:7602: void llvm::slpvectorizer::BoUpSLP::ShuffleCostEstimator::add(const TreeEntry &, ArrayRef<int>): Assertion `NumParts > 0 && NumParts < Mask.size() && "Expected positive number of registers."' failed.


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