class SDNodeIterator : public std::iterator<std::forward_iterator_tag,
SDNode, ptrdiff_t> {
- SDNode *Node;
+ const SDNode *Node;
unsigned Operand;
- SDNodeIterator(SDNode *N, unsigned Op) : Node(N), Operand(Op) {}
+ SDNodeIterator(const SDNode *N, unsigned Op) : Node(N), Operand(Op) {}
public:
bool operator==(const SDNodeIterator& x) const {
return Operand == x.Operand;
return Operand - Other.Operand;
}
- static SDNodeIterator begin(SDNode *N) { return SDNodeIterator(N, 0); }
- static SDNodeIterator end (SDNode *N) {
+ static SDNodeIterator begin(const SDNode *N) { return SDNodeIterator(N, 0); }
+ static SDNodeIterator end (const SDNode *N) {
return SDNodeIterator(N, N->getNumOperands());
}
template<typename EdgeIter>
static std::string getEdgeSourceLabel(const void *Node, EdgeIter I) {
- return itostr(I - SDNodeIterator::begin((SDNode *) Node));
+ return itostr(I - SDNodeIterator::begin((const SDNode *) Node));
}
/// edgeTargetsEdgeSource - This method returns true if this outgoing edge