[clang] [llvm] [HLSL] Implement '__builtin_hlsl_is_intangible' type trait (PR #104544)

[Chris B via cfe-commits]

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@@ -249,4 +249,8 @@ FIELD(HasDeclaredCopyAssignmentWithConstParam, 1, MERGE_OR)
 /// base classes or fields have a no-return destructor
 FIELD(IsAnyDestructorNoReturn, 1, NO_MERGE)
 
+/// Whether the record type is intangible (if any base classes or fields have
+/// type that is intangible). HLSL only.
+FIELD(IsIntangible, 1, NO_MERGE)
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llvm-beanz wrote:

nit: It is probably worth naming this `IsHLSLIntagible` just to clarify this is a language-specific trait.

https://github.com/llvm/llvm-project/pull/104544