[PATCH] D55452: [CostModel][X86] Teach getArithmeticReductionCost to properly cost the shuffles needed for a PairWise reduction before we reach a legal type. And remove one shuffle from the end of the reduction.

Simon Pilgrim via Phabricator via llvm-commits llvm-commits at lists.llvm.org
Thu Mar 26 10:18:16 PDT 2020

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RKSimon added a comment.

@craig.topper Do we still need this?


Repository:
  rL LLVM

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D55452/new/

https://reviews.llvm.org/D55452

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