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

[Tex Riddell via cfe-commits]

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@@ -271,53 +246,70 @@ struct BuiltinTypeDeclBuilder {
     return *this;
   }
 
+  FieldDecl *getResourceHandleField() {
+    FieldDecl *FD = Fields["h"];
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tex3d wrote:

I thought `lookup` was right:
https://github.com/llvm/llvm-project/blob/30af6fb163add17a6be515200881afdff91d213a/llvm/include/llvm/ADT/StringMap.h#L251-L258

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