544   for (Node *RootN : Worklist) {  in switchInternalEdgeToRef()
551     if (RootN->DFSNumber != 0) {  in switchInternalEdgeToRef()
552       assert(RootN->DFSNumber == -1 &&  in switchInternalEdgeToRef()
557     RootN->DFSNumber = RootN->LowLink = 1;  in switchInternalEdgeToRef()
560     DFSStack.push_back({RootN, RootN->call_begin()});  in switchInternalEdgeToRef()
1027     Node *RootN = Worklist.pop_back_val();  in removeInternalRefEdge()  local
1029     if (RootN->DFSNumber != 0) {  in removeInternalRefEdge()
1030       assert(RootN->DFSNumber == -1 &&  in removeInternalRefEdge()
1035     RootN->DFSNumber = RootN->LowLink = 1;  in removeInternalRefEdge()
1038     DFSStack.push_back({RootN, RootN->begin()});  in removeInternalRefEdge()
1304   for (Node *RootN : Nodes) {  in buildSCCs()
1311     if (RootN->DFSNumber != 0) {  in buildSCCs()
1312       assert(RootN->DFSNumber == -1 &&  in buildSCCs()
1317     RootN->DFSNumber = RootN->LowLink = 1;  in buildSCCs()
1320     DFSStack.push_back({RootN, RootN->call_begin()});  in buildSCCs()