[PATCH] D45723: [X86] Lowering SAD (sum of absolute differences) intrinsics to native IR (LLVM side)

[Craig Topper via Phabricator via llvm-commits]

craig.topper added a comment.

How much value are we getting out of this change? Does this expose a lot of optimization potential to the middle end? This is a pretty complex sequence. How easy/likely is for the middle end to mess this up and make it hard for the backend to recognize?


https://reviews.llvm.org/D45723