#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"
Use *allocHungoffUses(unsigned) const;
void dropHungoffUses() {
Use::zap(OperandList, OperandList + NumOperands, true);
- OperandList = 0;
+ OperandList = nullptr;
// Reset NumOperands so User::operator delete() does the right thing.
NumOperands = 0;
}
/// 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*(); }
};
// delete.
//
void dropAllReferences() {
- for (op_iterator i = op_begin(), e = op_end(); i != e; ++i)
- i->set(0);
+ for (Use &U : operands())
+ U.set(nullptr);
}
/// replaceUsesOfWith - Replaces all references to the "From" definition with