1321369Sdim//===- ScheduleDAGMutation.h - MachineInstr Scheduling ----------*- C++ -*-===// 2303231Sdim// 3353358Sdim// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 4353358Sdim// See https://llvm.org/LICENSE.txt for license information. 5353358Sdim// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 6303231Sdim// 7303231Sdim//===----------------------------------------------------------------------===// 8303231Sdim// 9303231Sdim// This file implements the ScheduleDAGMutation class, which represents 10303231Sdim// a target-specific mutation of the dependency graph for scheduling. 11303231Sdim// 12303231Sdim//===----------------------------------------------------------------------===// 13303231Sdim 14303231Sdim#ifndef LLVM_CODEGEN_SCHEDULEDAGMUTATION_H 15303231Sdim#define LLVM_CODEGEN_SCHEDULEDAGMUTATION_H 16303231Sdim 17303231Sdimnamespace llvm { 18303231Sdim 19321369Sdimclass ScheduleDAGInstrs; 20303231Sdim 21321369Sdim/// Mutate the DAG as a postpass after normal DAG building. 22321369Sdimclass ScheduleDAGMutation { 23321369Sdim virtual void anchor(); 24303231Sdim 25321369Sdimpublic: 26321369Sdim virtual ~ScheduleDAGMutation() = default; 27321369Sdim 28321369Sdim virtual void apply(ScheduleDAGInstrs *DAG) = 0; 29321369Sdim}; 30321369Sdim 31321369Sdim} // end namespace llvm 32321369Sdim 33321369Sdim#endif // LLVM_CODEGEN_SCHEDULEDAGMUTATION_H 34