[clang] [HLSL] Add a warning for implicit bindings (PR #135909)

[Finn Plummer via cfe-commits]

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@@ -3278,6 +3284,9 @@ void SemaHLSL::processExplicitBindingsOnDecl(VarDecl *VD) {
           << static_cast<int>(RT);
     }
   }
+
+  if (!HasBinding && VD->getType()->isHLSLResourceRecord())
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inbelic wrote:

I do also see the function `isResourceRecordTypeOrArrayOf` defined in `CGHLSLRuntime`. So just a quick check that we would never expect an array of them here

https://github.com/llvm/llvm-project/pull/135909