[PATCH] D141940: [SLP]Add shuffling of extractelements to avoid extra costs/data movement.

Tue Feb 21 03:07:47 PST 2023

dmgreen added subscribers: SjoerdMeijer, dmgreen.
dmgreen added a comment.

Hi - We noticed some regressions from this. The largest ones appear to be similar to the potential regressions that were reported in https://reviews.llvm.org/D142359#4131731, but with code that includes intrinsics and didn't change the vector cost: https://godbolt.org/z/P1zoxz85f.

Any idea how to improve that case and what might be going wrong? @SjoerdMeijer FYI. Thanks.

Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D141940/new/

https://reviews.llvm.org/D141940