[clang] [llvm] [HLSL] Add `Increment`/`DecrementCounter` methods to structured buffers (PR #114148)

[Greg Roth via cfe-commits]

================
@@ -343,27 +336,224 @@ struct TemplateParameterListBuilder {
     Params.clear();
 
     QualType T = Builder.Template->getInjectedClassNameSpecialization();
-    T = S.Context.getInjectedClassNameType(Builder.Record, T);
+    T = AST.getInjectedClassNameType(Builder.Record, T);
 
     return Builder;
   }
 };
+
+// Builder for methods of builtin types. Allows adding methods to builtin types
+// using the builder pattern like this:
+//
+//   BuiltinTypeMethodBuilder(Sema, RecordBuilder, "MethodName", ReturnType)
+//       .addParam("param_name", Type, InOutModifier)
+//       .callBuiltin("buildin_name", { BuiltinParams })
+//       .finalizeMethod();
+//
+// The builder needs to have all of the method parameters before it can create
+// a CXXMethodDecl. It collects them in addParam calls and when a first
+// method that builds the body is called it creates the CXXMethodDecl and
+// ParmVarDecls instances. These can then be referenced from the body building
+// methods. Destructor or an explicit call to finalizeMethod() will complete
+// the method definition.
----------------
pow2clk wrote:

Great description!

https://github.com/llvm/llvm-project/pull/114148