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 22 namespace llvm { 23 24 class Module; 25 class Function; 26 class Value; 27 28 /// \brief Structure to hold a use-list order. 29 struct UseListOrder { 30 const Value *V; 31 const Function *F; 32 std::vector<unsigned> Shuffle; 33 UseListOrderUseListOrder34 UseListOrder(const Value *V, const Function *F, size_t ShuffleSize) 35 : V(V), F(F), Shuffle(ShuffleSize) {} 36 UseListOrderUseListOrder37 UseListOrder() : V(nullptr), F(nullptr) {} UseListOrderUseListOrder38 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 47 private: 48 UseListOrder(const UseListOrder &X) = delete; 49 UseListOrder &operator=(const UseListOrder &X) = delete; 50 }; 51 52 typedef std::vector<UseListOrder> UseListOrderStack; 53 54 } // end namespace llvm 55 56 #endif // LLVM_IR_USELISTORDER_H 57