[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:2201
+                  all_of(Ext->users(),
+                         [](User *U) { return isa<GetElementPtrInst>(U); })) {
+                // Use getExtractWithExtendCost() to calculate the cost of
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I think you can use just `GetElementPtr::classof` here as a predicate. Also, it would be good to have negative test(s) for the situation where this should not work.


Repository:
  rL LLVM

https://reviews.llvm.org/D45469