const string& frame_name =
            control_flow_info[edge->src()->id()].frame_name;
        src = GetOrAddFrameNodeId(frame_name);
        src_type = "frame";
      }

      if (!cycles->InsertEdge(src, dst)) {
        // TODO(b/127521408): We can probably handle this situation with a more
        // sophisticated SCC based algorithm, but for now we bail out.