[PATCH] D93860: [SLP] delete unused pairwise reduction option

[Simon Pilgrim via Phabricator via llvm-commits]

RKSimon added a comment.

This would probably mean we can remove all the pairwise support from the TTI reduction cost callbacks as a followup.


CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D93860/new/

https://reviews.llvm.org/D93860