[llvm] [HVX] Support lowering of setuo, seto. (PR #140765)

[Alexey Karyakin via llvm-commits]

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+;; RUN: llc --mtriple=hexagon -mattr=+hvxv79,+hvx-length128b %s -o - | FileCheck %s
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quic-akaryaki wrote:

Please use `-mcpu=hexagonv79 -mattr=+hvx` instead of `-mattr=+hvxv79` so different versions for scalar core and HVX do not get mixed. 

https://github.com/llvm/llvm-project/pull/140765