[clang] Implement `ByteAddressBuffer` Load/Store methods (PR #176058)

[Kaitlin Peng via cfe-commits]

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@@ -480,6 +480,7 @@ void HLSLExternalSemaSource::defineHLSLTypesWithForwardDeclarations() {
   onCompletion(Decl, [this](CXXRecordDecl *Decl) {
     setupBufferType(Decl, *SemaPtr, ResourceClass::SRV, /*IsROV=*/false,
                     /*RawBuffer=*/true, /*HasCounter=*/false)
+        .addByteAddressBufferLoadMethods()
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kmpeng wrote:

No - only RWByteAddressBuffers have the Store method

https://github.com/llvm/llvm-project/pull/176058