[PATCH] D17475: MachineCopyPropagation: Catch copies of the form A<-B; A<-B

[Matthias Braun via llvm-commits]

MatzeB added a comment.

In http://reviews.llvm.org/D17475#362089, @junbuml wrote:

> Adding isConstantPhysReg() would be good in this pass. As far as I check, however, isConstantPhysReg() returns false for WZR and XZR in AArch64, which I think we need to fix (Bug 25457).


Yes let's do this one in follow up commits. Is it okay to push this one?


Repository:
  rL LLVM

http://reviews.llvm.org/D17475