[clang] [HLSL] Add ByteAddressBuffer definition to HLSLExternalSemaSource #113477 (PR #116699)

[Helena Kotas via cfe-commits]

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@@ -531,6 +531,16 @@ void HLSLExternalSemaSource::defineHLSLTypesWithForwardDeclarations() {
         .addArraySubscriptOperators()
         .completeDefinition();
   });
+
+  Decl = BuiltinTypeDeclBuilder(*SemaPtr, HLSLNamespace, "ByteAddressBuffer")
+             .Record;
+  onCompletion(Decl, [this](CXXRecordDecl *Decl) {
+    setupBufferType(Decl, *SemaPtr, ResourceClass::UAV, ResourceKind::RawBuffer,
+                    /*IsROV=*/true,
+                    /*RawBuffer=*/true)
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hekota wrote:

The resource attributes are wrong - `ByteAddressBuffer` is `SRV` (read-only) and `IsROV` should be false. Please refer to the Attributes table in this PR: https://github.com/llvm/wg-hlsl/pull/76. 

https://github.com/llvm/llvm-project/pull/116699