782   SmallVector<std::pair<Node *, EdgeSequence::call_iterator>, 16> DFSStack;  in switchInternalEdgeToRef()  local
808     assert(DFSStack.empty() &&  in switchInternalEdgeToRef()
823     DFSStack.emplace_back(RootN, (*RootN)->call_begin());  in switchInternalEdgeToRef()
825       auto [N, I] = DFSStack.pop_back_val();  in switchInternalEdgeToRef()
832           DFSStack.emplace_back(N, I);  in switchInternalEdgeToRef()
854             while (!DFSStack.empty())  in switchInternalEdgeToRef()
855               OldSCC.Nodes.push_back(DFSStack.pop_back_val().first);  in switchInternalEdgeToRef()
911     } while (!DFSStack.empty());  in switchInternalEdgeToRef()
1223   SmallVector<std::pair<Node *, EdgeSequence::iterator>, 4> DFSStack;  in removeInternalRefEdges()  local
1226     assert(DFSStack.empty() &&  in removeInternalRefEdges()
1242     DFSStack.emplace_back(RootN, (*RootN)->begin());  in removeInternalRefEdges()
1244       auto [N, I] = DFSStack.pop_back_val();  in removeInternalRefEdges()
1256           DFSStack.emplace_back(N, I);  in removeInternalRefEdges()
1288         assert(!DFSStack.empty() &&  in removeInternalRefEdges()
1329     } while (!DFSStack.empty());  in removeInternalRefEdges()
1331     assert(DFSStack.empty() && "Didn't flush the entire DFS stack!");  in removeInternalRefEdges()
1812   SmallVector<std::pair<Node *, EdgeItT>, 16> DFSStack;  in buildGenericSCCs()  local
1817     assert(DFSStack.empty() &&  in buildGenericSCCs()
1832     DFSStack.emplace_back(RootN, GetBegin(*RootN));  in buildGenericSCCs()
1834       auto [N, I] = DFSStack.pop_back_val();  in buildGenericSCCs()
1841           DFSStack.emplace_back(N, I);  in buildGenericSCCs()
1890     } while (!DFSStack.empty());  in buildGenericSCCs()