Luke Lau 6fdc77e488 [RISCV] Don't reduce vslidedown's VL in rotations ...

Even though we only need to write to the bottom NumElts - Rotation
elements for the vslidedown.vi, we can save an extra vsetivli toggle if
we just keep the wide VL.

(I may be missing something here: is there a reason why we want to explicitly keep the vslidedown narrow?)

Reviewed By: craig.topper

Differential Revision: https://reviews.llvm.org/D151390

2023-05-25 09:27:55 +01:00

639 KiB

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