| //===- ScheduleDAGMutation.h - MachineInstr Scheduling ----------*- C++ -*-===// |
| // |
| // The LLVM Compiler Infrastructure |
| // |
| // This file is distributed under the University of Illinois Open Source |
| // License. See LICENSE.TXT for details. |
| // |
| //===----------------------------------------------------------------------===// |
| // |
| // This file implements the ScheduleDAGMutation class, which represents |
| // a target-specific mutation of the dependency graph for scheduling. |
| // |
| //===----------------------------------------------------------------------===// |
| |
| #ifndef LLVM_CODEGEN_SCHEDULEDAGMUTATION_H |
| #define LLVM_CODEGEN_SCHEDULEDAGMUTATION_H |
| |
| namespace llvm { |
| |
| class ScheduleDAGInstrs; |
| |
| /// Mutate the DAG as a postpass after normal DAG building. |
| class ScheduleDAGMutation { |
| virtual void anchor(); |
| |
| public: |
| virtual ~ScheduleDAGMutation() = default; |
| |
| virtual void apply(ScheduleDAGInstrs *DAG) = 0; |
| }; |
| |
| } // end namespace llvm |
| |
| #endif // LLVM_CODEGEN_SCHEDULEDAGMUTATION_H |
