[clang] [llvm] [HLSL][SPIRV]Add SPIRV generation for HLSL dot (PR #104656)

[Farzon Lotfi via llvm-commits]

farzonl wrote:

could you fixup normalize to use some of you fdot expansion? I think you need to split the intrinsic check from the emitting check 
 https://github.com/llvm/llvm-project/blob/9cf27a4d8b1da0e7b51eacb9fb6096155c294d3f/llvm/lib/Target/DirectX/DXILIntrinsicExpansion.cpp#L278-L289

https://github.com/llvm/llvm-project/pull/104656