[clang] [HLSL] Add copy assignment and construtor to resource types (PR #156075)

[Shafik Yaghmour via cfe-commits]

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@@ -676,6 +704,44 @@ BuiltinTypeDeclBuilder::addHandleConstructorFromImplicitBinding() {
       .finalize();
 }
 
+BuiltinTypeDeclBuilder &BuiltinTypeDeclBuilder::addCopyConstructor() {
+  if (Record->isCompleteDefinition())
+    return *this;
+
+  ASTContext &AST = SemaRef.getASTContext();
+  QualType RecordType = AST.getCanonicalTagType(Record);
+  QualType ConstRecordType = RecordType.withConst();
+  QualType ConstRecordRefType = AST.getLValueReferenceType(ConstRecordType);
+
+  using PH = BuiltinTypeMethodBuilder::PlaceHolder;
+
+  return BuiltinTypeMethodBuilder(*this, "", AST.VoidTy, false, true)
+      .addParam("other", ConstRecordRefType)
+      .getResourceHandle(PH::_0)
+      .assign(PH::Handle, PH::LastStmt)
+      .finalize();
+}
+
+BuiltinTypeDeclBuilder &BuiltinTypeDeclBuilder::addCopyAssignmentOperator() {
+  if (Record->isCompleteDefinition())
+    return *this;
+
+  ASTContext &AST = SemaRef.getASTContext();
+  QualType RecordType = AST.getCanonicalTagType(Record);
+  QualType ConstRecordType = RecordType.withConst();
+  QualType ConstRecordRefType = AST.getLValueReferenceType(ConstRecordType);
+  QualType RecordRefType = AST.getLValueReferenceType(RecordType);
+
+  using PH = BuiltinTypeMethodBuilder::PlaceHolder;
+  DeclarationName Name = AST.DeclarationNames.getCXXOperatorName(OO_Equal);
+  return BuiltinTypeMethodBuilder(*this, Name, RecordRefType, false, false)
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shafik wrote:

The default arguments are `false` so we can leave off the last two.

https://github.com/llvm/llvm-project/pull/156075