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

[Brian Cain via llvm-commits]

androm3da wrote:

This test seems to expose an issue with v68-and-later.  Not sure if it's on the baseline or introduced by your change, though.

```
./bin/llc --mtriple=hexagon --mcpu=hexagonv68 --mattr=+hvxv68,+hvx-length64b < ../llvm-project/llvm/test/MC/Hexagon/inst_setcc_uno_uo.ll > hvx64.s
llc: /local/mnt/workspace/upstream/llvm-project/llvm/lib/CodeGen/SelectionDAG/LegalizeTypes.cpp:649: void llvm::DAGTypeLegalizer::ReplaceValueWith(SDValue, SDValue): Assertion `From.getNode() != To.getNode() && "Potential legalization loop!"' failed.
PLEASE submit a bug report to https://github.com/llvm/llvm-project/issues/ and include the crash backtrace.
```

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