[PATCH] D146564: [SLP]Find reused scalars in buildvector sequences, if any.

Wed Apr 5 23:00:04 PDT 2023

dblaikie added a comment.

FWIW, this change looks likely to be the blame for a regression I'm seeing on some internal workload at Google, resulting in this failure:

  Instruction does not dominate all uses!
    <badref> = extractelement
    %589 = insertelement <4 x float> %588, float <badref>, i64 3
  LLVM ERROR: Transformation resulted in an invalid module

I don't have an isolated repro or anything to share at the moment - just a vague "heads up" for now.

Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D146564/new/

https://reviews.llvm.org/D146564