[clang] [HLSL] Make HLSLAttributedResourceType canonical and add code paths to convert HLSL types to DirectX target types (PR #110327)

[Chris B via cfe-commits]

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@@ -4492,6 +4492,31 @@ void CXXNameMangler::mangleType(const ArrayParameterType *T) {
   mangleType(cast<ConstantArrayType>(T));
 }
 
+void CXXNameMangler::mangleType(const HLSLAttributedResourceType *T) {
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llvm-beanz wrote:

I assume the intent is that we're mangling this as a vendor-specific qualifier? If so, we should use `mangleVendorQualifier` to ensure that it is properly prefixed, and we should probably use more than one letter as the qualifier name.

https://github.com/llvm/llvm-project/pull/110327