// don't know its execution frequency.
BasicBlock* pad = m_insertionSet.insertBefore(*successor, PNaN);
pad->appendNode(
- m_graph, SpecNone, Jump, (*successor)->at(0)->origin, OpInfo(*successor));
+ m_graph, SpecNone, Jump, (*successor)->firstOrigin(), OpInfo(*successor));
pad->predecessors.append(predecessor);
(*successor)->replacePredecessor(predecessor, pad);