[PATCH] D45806: DAGcombiner: Handle correctly non-splat power of 2 -1 divisor

[Eli Friedman via Phabricator via llvm-commits]

efriedma added a comment.

I think you can save a blend by emitting one select for both "1" and "-1"?  (`SDValue IsOneOrAllOnes = DAG.getNode(ISD::OR, VT, IsAllOnes, IsOne);` etc.)


Repository:
  rL LLVM

https://reviews.llvm.org/D45806