788   SmallVector<std::pair<Node *, EdgeSequence::call_iterator>, 16> DFSStack;  in switchInternalEdgeToRef()  local
814     assert(DFSStack.empty() &&  in switchInternalEdgeToRef()
829     DFSStack.push_back({RootN, (*RootN)->call_begin()});  in switchInternalEdgeToRef()
833       std::tie(N, I) = DFSStack.pop_back_val();  in switchInternalEdgeToRef()
840           DFSStack.push_back({N, I});  in switchInternalEdgeToRef()
862             while (!DFSStack.empty())  in switchInternalEdgeToRef()
863               OldSCC.Nodes.push_back(DFSStack.pop_back_val().first);  in switchInternalEdgeToRef()
919     } while (!DFSStack.empty());  in switchInternalEdgeToRef()
1235   SmallVector<std::pair<Node *, EdgeSequence::iterator>, 4> DFSStack;  in removeInternalRefEdge()  local
1238     assert(DFSStack.empty() &&  in removeInternalRefEdge()
1254     DFSStack.push_back({RootN, (*RootN)->begin()});  in removeInternalRefEdge()
1258       std::tie(N, I) = DFSStack.pop_back_val();  in removeInternalRefEdge()
1270           DFSStack.push_back({N, I});  in removeInternalRefEdge()
1302         assert(!DFSStack.empty() &&  in removeInternalRefEdge()
1343     } while (!DFSStack.empty());  in removeInternalRefEdge()
1345     assert(DFSStack.empty() && "Didn't flush the entire DFS stack!");  in removeInternalRefEdge()
1792   SmallVector<std::pair<Node *, EdgeItT>, 16> DFSStack;  in buildGenericSCCs()  local
1797     assert(DFSStack.empty() &&  in buildGenericSCCs()
1812     DFSStack.push_back({RootN, GetBegin(*RootN)});  in buildGenericSCCs()
1816       std::tie(N, I) = DFSStack.pop_back_val();  in buildGenericSCCs()
1823           DFSStack.push_back({N, I});  in buildGenericSCCs()
1872     } while (!DFSStack.empty());  in buildGenericSCCs()