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 "llvm/ADT/ArrayRef.h" 19#include "llvm/ADT/SmallVector.h" 20#include <vector> 21 22namespace llvm { 23 24class Module; 25class Function; 26class Value; 27 28/// \brief Structure to hold a use-list order. 29struct UseListOrder { 30 const Value *V; 31 const Function *F; 32 std::vector<unsigned> Shuffle; 33 34 UseListOrder(const Value *V, const Function *F, size_t ShuffleSize) 35 : V(V), F(F), Shuffle(ShuffleSize) {} 36 37 UseListOrder() : V(0), F(0) {} 38 UseListOrder(UseListOrder &&X) 39 : V(X.V), F(X.F), Shuffle(std::move(X.Shuffle)) {} 40 UseListOrder &operator=(UseListOrder &&X) { 41 V = X.V; 42 F = X.F; 43 Shuffle = std::move(X.Shuffle); 44 return *this; 45 } 46 47private: 48 UseListOrder(const UseListOrder &X) = delete; 49 UseListOrder &operator=(const UseListOrder &X) = delete; 50}; 51 52typedef std::vector<UseListOrder> UseListOrderStack; 53 54} // end namespace llvm 55 56#endif 57