[llvm] [SPIRV] Test basic float and int types (PR #66282)

[Natalie Chouinard via llvm-commits]

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sudonatalie wrote:

I don't see that directory? For what it's worth my intention with these tests was to test the translation from HLSL types, so I think they would make sense in the future shared directory with DXIL. I guess the meaning of "HLSL related features" is kind of hard to pin down though, I'm fine with them being shared with either other SPIR-V versions or DXIL or both.

https://github.com/llvm/llvm-project/pull/66282