774   for (Node *RootN : Worklist) {  in switchInternalEdgeToRef()
781     if (RootN->DFSNumber != 0) {  in switchInternalEdgeToRef()
782       assert(RootN->DFSNumber == -1 &&  in switchInternalEdgeToRef()
787     RootN->DFSNumber = RootN->LowLink = 1;  in switchInternalEdgeToRef()
790     DFSStack.push_back({RootN, (*RootN)->call_begin()});  in switchInternalEdgeToRef()
1212     Node *RootN = Worklist.pop_back_val();  in removeInternalRefEdge()  local
1214     if (RootN->DFSNumber != 0) {  in removeInternalRefEdge()
1215       assert(RootN->DFSNumber == -1 &&  in removeInternalRefEdge()
1220     RootN->DFSNumber = RootN->LowLink = 1;  in removeInternalRefEdge()
1223     DFSStack.push_back({RootN, (*RootN)->begin()});  in removeInternalRefEdge()
1602   for (Node *RootN : Roots) {  in buildGenericSCCs()
1609     if (RootN->DFSNumber != 0) {  in buildGenericSCCs()
1610       assert(RootN->DFSNumber == -1 &&  in buildGenericSCCs()
1615     RootN->DFSNumber = RootN->LowLink = 1;  in buildGenericSCCs()
1618     DFSStack.push_back({RootN, GetBegin(*RootN)});  in buildGenericSCCs()