[PATCH] D21398: [IVUser] Add a trunc if used only by a single IV user

[Andrew Trick via llvm-commits]

atrick added a comment.

It would be great to fix the example shown in the summary. However, I'm concerned that the proposed heuristic could hurt codegen in other cases.The cases where this heuristic generates worse code should be identified to determine whether this is the right strategy.

Maybe this should just be a bug report since the patch is in limbo?


https://reviews.llvm.org/D21398