1//===- llvm/IR/UseListOrder.h - LLVM Use List Order -------------*- C++ -*-===// 2// 3// The LLVM Compiler Infrastructure 4// 5// This file is distributed under the University of Illinois Open Source 6// License. See LICENSE.TXT for details. 7// 8//===----------------------------------------------------------------------===// 9// 10// This file has structures and command-line options for preserving use-list 11// order. 12// 13//===----------------------------------------------------------------------===// 14 15#ifndef LLVM_IR_USELISTORDER_H 16#define LLVM_IR_USELISTORDER_H 17 18#include <cstddef> 19#include <vector> 20 21namespace llvm { 22 23class Module; 24class Function; 25class Value; 26 27/// \brief Structure to hold a use-list order. 28struct UseListOrder { 29 const Value *V; 30 const Function *F; 31 std::vector<unsigned> Shuffle; 32 33 UseListOrder(const Value *V, const Function *F, size_t ShuffleSize) 34 : V(V), F(F), Shuffle(ShuffleSize) {} 35 36 UseListOrder() : V(nullptr), F(nullptr) {} 37 UseListOrder(UseListOrder &&X) 38 : V(X.V), F(X.F), Shuffle(std::move(X.Shuffle)) {} 39 UseListOrder &operator=(UseListOrder &&X) { 40 V = X.V; 41 F = X.F; 42 Shuffle = std::move(X.Shuffle); 43 return *this; 44 } 45 46private: 47 UseListOrder(const UseListOrder &X) = delete; 48 UseListOrder &operator=(const UseListOrder &X) = delete; 49}; 50 51typedef std::vector<UseListOrder> UseListOrderStack; 52 53} // end namespace llvm 54 55#endif // LLVM_IR_USELISTORDER_H 56