[PATCH] D111530: [TargetLowering] Optimize expanded SRL/SHL fed into SETCC ne/eq 0

[Sanjay Patel via Phabricator via llvm-commits]

spatel added a comment.

If I'm seeing the patterns correctly, there's at least one more possibility. 
If a target has a legal+fast funnel shift, we could eliminate the shift completely from this sequence instead of forming a rotate:
https://alive2.llvm.org/ce/z/PpGpy3


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D111530/new/

https://reviews.llvm.org/D111530