[PATCH] D121355: [SelectionDAG] Fold shift constants into cmp

[Simon Pilgrim via Phabricator via llvm-commits]

RKSimon added a comment.

I'm a little worried that this is likely to lead to infinite loops with constant/condcode combines fighting - this feels like it should be be backend specific tbh, or maybe even ISelDAGToDAG.


CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D121355/new/

https://reviews.llvm.org/D121355