[PATCH] D45469: [SLP] Use getExtractWithExtendCost() to compute the scalar cost of extractelement/ext pair

[Alexey Bataev via Phabricator via llvm-commits]

ABataev added inline comments.


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Comment at: lib/Transforms/Vectorize/SLPVectorizer.cpp:2199
+              Instruction *Ext = E->user_back();
+              if (isa<SExtInst>(Ext) || isa<ZExtInst>(Ext)) {
+                // Use getExtractWithExtendCost() to calculate the cost of
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I think you need to check that `Ext` user is GEP and `Ext` is used as GEP index.


Repository:
  rL LLVM

https://reviews.llvm.org/D45469