[llvm] [Spirv][HLSL] Add OpAll lowering and float vec support (PR #87952)

[Cooper Partin via llvm-commits]

https://github.com/coopp approved this pull request.

Looks good to me.  I am still getting used to seeing 'unsigned' being used without a type being specified. 

https://github.com/llvm/llvm-project/pull/87952