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 20 namespace llvm { 21 22 class Function; 23 class Value; 24 25 /// Structure to hold a use-list order. 26 struct 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 39 using UseListOrderStack = std::vector<UseListOrder>; 40 41 } // end namespace llvm 42 43 #endif // LLVM_IR_USELISTORDER_H 44