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//===-- Use.cpp - Implement the Use class ---------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
#include "llvm/IR/Use.h"
#include "llvm/IR/User.h"
#include "llvm/IR/Value.h"
#include <new>
namespace llvm {
void Use::swap(Use &RHS) {
if (Val == RHS.Val)
return;
std::swap(Val, RHS.Val);
std::swap(Next, RHS.Next);
std::swap(Prev, RHS.Prev);
*Prev = this;
if (Next)
Next->Prev = &Next;
*RHS.Prev = &RHS;
if (RHS.Next)
RHS.Next->Prev = &RHS.Next;
}
unsigned Use::getOperandNo() const {
return this - getUser()->op_begin();
}
void Use::zap(Use *Start, const Use *Stop, bool del) {
while (Start != Stop)
(--Stop)->~Use();
if (del)
::operator delete(Start);
}
} // namespace llvm
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