1//===- llvm/IR/UseListOrder.h - LLVM Use List Order -------------*- C++ -*-===//
2//
3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4// See https://llvm.org/LICENSE.txt for license information.
5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6//
7//===----------------------------------------------------------------------===//
8//
9// This file has structures and command-line options for preserving use-list
10// order.
11//
12//===----------------------------------------------------------------------===//
13
14#ifndef LLVM_IR_USELISTORDER_H
15#define LLVM_IR_USELISTORDER_H
16
17#include <cstddef>
18#include <vector>
19
20namespace llvm {
21
22class Function;
23class Value;
24
25/// Structure to hold a use-list order.
26struct UseListOrder {
27 const Value *V = nullptr;
28 const Function *F = nullptr;
29 std::vector<unsigned> Shuffle;
30
31 UseListOrder(const Value *V, const Function *F, size_t ShuffleSize)
32 : V(V), F(F), Shuffle(ShuffleSize) {}
33
34 UseListOrder() = default;
35 UseListOrder(UseListOrder &&) = default;
36 UseListOrder &operator=(UseListOrder &&) = default;
37};
38
39using UseListOrderStack = std::vector<UseListOrder>;
40
41} // end namespace llvm
42
43#endif // LLVM_IR_USELISTORDER_H
44