[PATCH] D26169: [Reassociate] Skip reassociation for IV if its def instruction contains NSW/NUW flags to enable better IndVar and LSR

[Mehdi AMINI via llvm-commits]

mehdi_amini added a comment.

What about having two modes for reassociate: one where we don't do any transformation that drop nsw/nuw flag, and another where it is permitted. Depending on the position in the pipeline we allow or not to drop the flags.


Repository:
  rL LLVM

https://reviews.llvm.org/D26169