1 //===- X86MacroFusion.h - X86 Macro Fusion --------------------------------===// 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 /// \file This file contains the X86 definition of the DAG scheduling mutation 10 /// to pair instructions back to back. 11 // 12 //===----------------------------------------------------------------------===// 13 14 #ifndef LLVM_LIB_TARGET_X86_X86MACROFUSION_H 15 #define LLVM_LIB_TARGET_X86_X86MACROFUSION_H 16 17 #include <memory> 18 19 namespace llvm { 20 21 class ScheduleDAGMutation; 22 23 /// Note that you have to add: 24 /// DAG.addMutation(createX86MacroFusionDAGMutation()); 25 /// to X86PassConfig::createMachineScheduler() to have an effect. 26 std::unique_ptr<ScheduleDAGMutation> 27 createX86MacroFusionDAGMutation(); 28 29 } // end namespace llvm 30 31 #endif 32