Simon Pilgrim 5b4000dc58 [VectorUtils] Add llvm::scaleShuffleMaskElts wrapper for narrowShuffleMaskElts/widenShuffleMaskElts, NFC. (#96646) ...

Using the target number of vector elements, scaleShuffleMaskElts will try to use narrowShuffleMaskElts/widenShuffleMaskElts to scale the shuffle mask accordingly.

Working on #58895 I didn't want to create yet another case where we have to handle both re-scaling cases.

2024-06-26 10:43:58 +01:00

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