[PATCH] D116740: [SLP]Improve reordering for the nodes beeing used in alternate vectorization.

Valeriy Dmitriev via Phabricator via llvm-commits llvm-commits at lists.llvm.org
Fri Apr 1 16:54:00 PDT 2022


vdmitrie added inline comments.


================
Comment at: llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp:3245-3250
                 if (TE->isSame(VL)) {
                   Gather = TE;
                   return true;
                 }
                 return false;
               }) > 1)
----------------
Problem is seems to be here when VL is all constants. Operands are still can be reordered with no extra cost.


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D116740/new/

https://reviews.llvm.org/D116740



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