[PATCH] D113782: [SLP]Improve cost model for the shuffled extracts.

[Simon Pilgrim via Phabricator via llvm-commits]

RKSimon added inline comments.


================
Comment at: llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp:5480
     Cost -= InsertCost;
+  } else if (FirstUsers.size() >= 2) {
+    unsigned MaxVF = *std::max_element(VF.begin(), VF.end());
----------------
can FirstUsers be empty here ?


Repository:
  rG LLVM Github Monorepo

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  https://reviews.llvm.org/D113782/new/

https://reviews.llvm.org/D113782