749   for (Node *RootN : Worklist) {  in switchInternalEdgeToRef()
756     if (RootN->DFSNumber != 0) {  in switchInternalEdgeToRef()
757       assert(RootN->DFSNumber == -1 &&  in switchInternalEdgeToRef()
762     RootN->DFSNumber = RootN->LowLink = 1;  in switchInternalEdgeToRef()
765     DFSStack.push_back({RootN, (*RootN)->call_begin()});  in switchInternalEdgeToRef()
1187     Node *RootN = Worklist.pop_back_val();  in removeInternalRefEdge()  local
1189     if (RootN->DFSNumber != 0) {  in removeInternalRefEdge()
1190       assert(RootN->DFSNumber == -1 &&  in removeInternalRefEdge()
1195     RootN->DFSNumber = RootN->LowLink = 1;  in removeInternalRefEdge()
1198     DFSStack.push_back({RootN, (*RootN)->begin()});  in removeInternalRefEdge()
1568   for (Node *RootN : Roots) {  in buildGenericSCCs()
1575     if (RootN->DFSNumber != 0) {  in buildGenericSCCs()
1576       assert(RootN->DFSNumber == -1 &&  in buildGenericSCCs()
1581     RootN->DFSNumber = RootN->LowLink = 1;  in buildGenericSCCs()
1584     DFSStack.push_back({RootN, GetBegin(*RootN)});  in buildGenericSCCs()