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

[Alexey Bataev via Phabricator via llvm-commits]

ABataev added a comment.

In D141940#4141069 <https://reviews.llvm.org/D141940#4141069>, @dmgreen wrote:

> 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.

I have a small fix, will commit it later today (working on a small reproducer)


Repository:
  rG LLVM Github Monorepo

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  https://reviews.llvm.org/D141940/new/

https://reviews.llvm.org/D141940