Florian Hahn 151c144350
[LV] Use usesScalars in widenPHIInstruction.
This uses the existing VPlan helpers to check whether there are scalar
uses of a phi recipe. It remove one of the few remaining dependencies on
the cost model from VPlan code generation.

Depends on D121612.

Reviewed By: Ayal

Differential Revision: https://reviews.llvm.org/D121613
2022-03-17 13:16:32 +00:00
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