724   SmallVector<std::pair<Node *, EdgeSequence::call_iterator>, 16> DFSStack;  in switchInternalEdgeToRef()  local
750     assert(DFSStack.empty() &&  in switchInternalEdgeToRef()
765     DFSStack.push_back({RootN, (*RootN)->call_begin()});  in switchInternalEdgeToRef()
769       std::tie(N, I) = DFSStack.pop_back_val();  in switchInternalEdgeToRef()
776           DFSStack.push_back({N, I});  in switchInternalEdgeToRef()
798             while (!DFSStack.empty())  in switchInternalEdgeToRef()
799               OldSCC.Nodes.push_back(DFSStack.pop_back_val().first);  in switchInternalEdgeToRef()
855     } while (!DFSStack.empty());  in switchInternalEdgeToRef()
1179   SmallVector<std::pair<Node *, EdgeSequence::iterator>, 4> DFSStack;  in removeInternalRefEdge()  local
1182     assert(DFSStack.empty() &&  in removeInternalRefEdge()
1198     DFSStack.push_back({RootN, (*RootN)->begin()});  in removeInternalRefEdge()
1202       std::tie(N, I) = DFSStack.pop_back_val();  in removeInternalRefEdge()
1214           DFSStack.push_back({N, I});  in removeInternalRefEdge()
1246         assert(!DFSStack.empty() &&  in removeInternalRefEdge()
1287     } while (!DFSStack.empty());  in removeInternalRefEdge()
1289     assert(DFSStack.empty() && "Didn't flush the entire DFS stack!");  in removeInternalRefEdge()
1564   SmallVector<std::pair<Node *, EdgeItT>, 16> DFSStack;  in buildGenericSCCs()  local
1569     assert(DFSStack.empty() &&  in buildGenericSCCs()
1584     DFSStack.push_back({RootN, GetBegin(*RootN)});  in buildGenericSCCs()
1588       std::tie(N, I) = DFSStack.pop_back_val();  in buildGenericSCCs()
1595           DFSStack.push_back({N, I});  in buildGenericSCCs()
1644     } while (!DFSStack.empty());  in buildGenericSCCs()