Change file names of template-driven HW intrinsic tests

[fiigii]

Currently, the template-driven tests have file names with the pattern "Intrinsic.Base.cs". However, certain AVX/AVX2/FMA intrinsic can operate over Vector128<T> and Vector256<T> both.
So the test files should be changed to "Intrinsic.Vector128/256<Base>.cs".

I will make this change after dotnet/coreclr#16183 merged.

cc @tannergooding @CarolEidt

[tannergooding]

To be more precise, it is currently Intrinsic.RetBaseType.

Changing it to Intrinsic.RetVectorType_RetBaseType (or something similar) sounds good to me.

Do we know if there are any intrinsics where they need to differentiate based on parameter types as well? (It would be good to support that scenario as well, if it needs it).

[fiigii]

Do we know if there are any intrinsics where they need to differentiate based on parameter types as well?

Did not see. If there is, they are very minority. We can specially treat them.

[tannergooding]

@fiigii, I think the simplest way to deal with this will be to add a new field to the Inputs that specifies the file name.

That is, each entry is currently (string templateFileName, string[] templateData). We could change that to (string templateFileName, string generatedFileName, string[] templateData).

We can use the existing logic for string.IsNullOrEmpty(generatedFileName).

[tannergooding]

That will cover generation for the 99% and the customization, if required, for the minority cases that result in conflicts.

[fiigii]

@tannergooding Sounds good!