[PATCH] D100486: [COST]Improve cost model for shuffles in SLP.

Thu May 5 11:20:40 PDT 2022

asbirlea added a comment.

We currently root-caused a 20% regression in eigen complex to this patch and it is blocking our compiler release.
I need some time to do additional testing, given there are at least a few patches on top of this. So far I see a crash fix, two NFCs and two additional changes that may also affect performance (https://reviews.llvm.org/D114171 and https://reviews.llvm.org/D115750).
Can you please hold off on any additional changes while we test further, or include them here for review so I can check if they resolve the regressions seen so far?

Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D100486/new/

https://reviews.llvm.org/D100486