[PATCH] D96250: [CostModel] An extending load to illegal type is not free.

[Dave Green via Phabricator via llvm-commits]

dmgreen added a comment.

Ah I see. I guess it should be working on the maximum of the two type legalization costs, and the same number of vector lanes for each type? But that looks like a larger change throughout getCastInstrCost.

I think this splitting the same number of times still makes sense as a heuristic.


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  https://reviews.llvm.org/D96250/new/

https://reviews.llvm.org/D96250