[clang] [lldb] [HLSL] Implement intangible AST type (PR #97362)

[Chris B via cfe-commits]

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@@ -12335,6 +12335,10 @@ def warn_hlsl_availability_unavailable :
   Warning<err_unavailable.Summary>,
   InGroup<HLSLAvailability>, DefaultError;
 
+def err_hlsl_intangible_type_cannot_be_declared : Error<
+"HLSL intangible type cannot be declared here">;
+def err_hlsl_intangible_type_as_function_arg_or_return : Error<
+"HLSL intangible type cannot be used as function %select{argument|return value}0">;
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llvm-beanz wrote:

I don't think this is correct. We do allow resources as argument and return types.

https://github.com/llvm/llvm-project/pull/97362