[PATCH] D50018: SystemZ: keep AND masks before SHL i128

[Eli Friedman via Phabricator via llvm-commits]

efriedma added a comment.

The transform is wrong whether or not the shift type is legal: ISD::SHL returns poison for out-of-range shifts, just like the IR "shl", and DAGCombine will take advantage of this.


Repository:
  rL LLVM

https://reviews.llvm.org/D50018