#ifndef LLVM_IR_USER_H
#define LLVM_IR_USER_H
+#include "llvm/ADT/iterator.h"
#include "llvm/ADT/iterator_range.h"
#include "llvm/IR/Value.h"
#include "llvm/Support/ErrorHandling.h"
friend struct HungoffOperandTraits;
virtual void anchor();
protected:
+ /// NumOperands - The number of values used by this User.
+ ///
+ unsigned NumOperands;
+
/// OperandList - This is a pointer to the array of Uses for this User.
/// For nodes of fixed arity (e.g. a binary operator) this array will live
/// prefixed to some derived class instance. For nodes of resizable variable
/// allocated and should be destroyed by the classes' virtual dtor.
Use *OperandList;
- /// NumOperands - The number of values used by this User.
- ///
- unsigned NumOperands;
-
void *operator new(size_t s, unsigned Us);
User(Type *ty, unsigned vty, Use *OpList, unsigned NumOps)
- : Value(ty, vty), OperandList(OpList), NumOperands(NumOps) {}
+ : Value(ty, vty), NumOperands(NumOps), OperandList(OpList) {}
Use *allocHungoffUses(unsigned) const;
void dropHungoffUses() {
Use::zap(OperandList, OperandList + NumOperands, true);
/// Convenience iterator for directly iterating over the Values in the
/// OperandList
- class value_op_iterator : public std::iterator<std::forward_iterator_tag,
- Value*> {
- op_iterator OI;
- public:
- explicit value_op_iterator(Use *U) : OI(U) {}
-
- bool operator==(const value_op_iterator &x) const {
- return OI == x.OI;
- }
- bool operator!=(const value_op_iterator &x) const {
- return !operator==(x);
- }
-
- /// Iterator traversal: forward iteration only
- value_op_iterator &operator++() { // Preincrement
- ++OI;
- return *this;
- }
- value_op_iterator operator++(int) { // Postincrement
- value_op_iterator tmp = *this; ++*this; return tmp;
- }
-
- /// Retrieve a pointer to the current Value.
- Value *operator*() const {
- return *OI;
- }
+ struct value_op_iterator
+ : iterator_adaptor_base<value_op_iterator, op_iterator,
+ std::random_access_iterator_tag, Value *,
+ ptrdiff_t, Value *, Value *> {
+ explicit value_op_iterator(Use *U = nullptr) : iterator_adaptor_base(U) {}
+ Value *operator*() const { return *I; }
Value *operator->() const { return operator*(); }
};