[PATCH] D46760: [InstCombine] Enhance narrowUDivURem.

[Sanjoy Das via Phabricator via llvm-commits]

sanjoy added a comment.

The transformation we really want is: `(Z(A) / N) * N + Z(A) % N` => `Z(A)` where `Z(...)` is zero extension.  Maybe we can do that directly instead of reasoning about use lists like this (if we do it directly we will trivially not be increasing the number of zero extensions)?


Repository:
  rL LLVM

https://reviews.llvm.org/D46760