161   class ChildIterator {  class in llvm::Graph
170     ChildIterator(); // Disable default constructor.
172     ChildIterator(NodeType *F, NodeSubset C) : FirstNode(F), Children(C) {}  in ChildIterator()  function in llvm::Graph::ChildIterator
176     ChildIterator(const ChildIterator& other) : FirstNode(other.FirstNode),  in ChildIterator()  function in llvm::Graph::ChildIterator
180     bool operator==(const ChildIterator &other) const {  in operator ==()
184     bool operator!=(const ChildIterator &other) const {  in operator !=()
189     ChildIterator& operator++() {  in operator ++()
202     ChildIterator operator++(int) {  in operator ++()
203       ChildIterator Result(*this);  in operator ++()
222   static ChildIterator child_begin(NodeType *Parent) {  in child_begin()
223     return ChildIterator(Parent - Parent->first, Parent->second);  in child_begin()
227   static ChildIterator child_end(NodeType *Parent) {  in child_end()
228     return ChildIterator(Parent - Parent->first, NodeSubset());  in child_end()
235   typedef typename Graph<N>::ChildIterator ChildIteratorType;