[clang] [HLSL][LongVec] Add more intrinsic support (PR #222043)

[Farzon Lotfi via cfe-commits]

farzonl wrote:

Test failure is unrelated, will proceed with merge
```
Failed Tests (1):
  LLVM :: Transforms/Util/DeclareRuntimeLibcalls/basic.ll
```

https://github.com/llvm/llvm-project/pull/222043