[PATCH] D115757: [SLP]Generalize cost model.

[Alexey Bataev via Phabricator via llvm-commits]

ABataev added inline comments.


================
Comment at: llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp:5840
+    if (!I)
+      return true;
     auto *Op = cast<Instruction>(V)->getOperand(OpIdx);
----------------
RKSimon wrote:
> true?
Here is my idea. Generally speaking, here we can have only undef/poison or just a pointer (as part of getelementpr node) currently (maybe, need to add an assert). I thought that because of that we can treat its (virtual) operand as power-of-2, since it can be any value. Thoughts?


Repository:
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CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D115757/new/

https://reviews.llvm.org/D115757