[PATCH] D123835: AMDGPU/SDAG: Refine the fold to v_mad_[iu]64_[iu]32

[Matt Arsenault via Phabricator via llvm-commits]

arsenm added a comment.

In D123835#3459341 <https://reviews.llvm.org/D123835#3459341>, @nhaehnle wrote:

> Agreed, but it looks like GlobalISel doesn't generate mad_64_32 at all at the moment. So it's more than just porting this particular tweak.

Right, that's the point. Might as well start porting combines as they're looked at again


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