[clang] [coroutines] Introduce [[clang::coro_return_type]] and [[clang::coro_wrapper]] (PR #71945)

[Utkarsh Saxena via cfe-commits]

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@@ -15811,6 +15813,32 @@ static void diagnoseImplicitlyRetainedSelf(Sema &S) {
           << FixItHint::CreateInsertion(P.first, "self->");
 }
 
+// Return whether FD is `promise_type::get_return_object`.
+bool isGetReturnObject(FunctionDecl *FD) {
+  if (!FD->getDeclName().isIdentifier() ||
+      !FD->getName().equals("get_return_object") || !FD->param_empty())
+    return false;
+  CXXMethodDecl *MD = dyn_cast<CXXMethodDecl>(FD);
+  if (!MD || !MD->isCXXInstanceMember())
+    return false;
+  RecordDecl *PromiseType = MD->getParent();
+  return PromiseType && PromiseType->getDeclName().isIdentifier() &&
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usx95 wrote:

Don't know what was I thinking. Thanks.

https://github.com/llvm/llvm-project/pull/71945