[PATCH] D124769: [SLP] AdjustExtractsCost - remove redundant subvector extraction code

Sat May 14 02:37:02 PDT 2022

RKSimon added a comment.

In D124769#3498929 <https://reviews.llvm.org/D124769#3498929>, @ABataev wrote:

> In D124769#3498914 <https://reviews.llvm.org/D124769#3498914>, @RKSimon wrote:
>
>> I'll come back to this - ideally we'd avoid handling the subvector cost adjustments in SLP and let getScalarizationOverhead deal with it.
>
> I think this is possible, but need to reimplement the whole `AdjustExtractsCost`, need to use getScalarizationOverhead instead of getVectorInstrCostr.

D125527 <https://reviews.llvm.org/D125527> improves the duplicated subvector extraction costs on x86

Repository:
  rG LLVM Github Monorepo

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  https://reviews.llvm.org/D124769/new/

https://reviews.llvm.org/D124769