[PATCH] D54640: [DAGCombiner] narrow truncated binops

[Sanjay Patel via Phabricator via llvm-commits]

spatel added a comment.

In https://reviews.llvm.org/D54640#1303043, @RKSimon wrote:

> X86's combineTruncatedArithmetic does something similar - can we merge them at all?


Yes, that should be possible. This patch has a TODO about supporting vectors, and that code has a TODO about supporting scalars (it is exclusively working on vectors). So they are completely independent for the moment, but I'll take that as a follow-up.


https://reviews.llvm.org/D54640