[clang] [HLSL] Make memory representation of boolean vectors in HLSL, vectors of i32. Add support for boolean swizzling. (PR #123977)

[Chris B via cfe-commits]

https://github.com/llvm-beanz commented:

I commented on the first two that I saw, but I think there are a lot of places left where you're conditionalizing the CodeGen behavior on HLSL, that we could instead make the condition based on the types involved requiring conversions.

https://github.com/llvm/llvm-project/pull/123977