| Andrew Scull | 5e1ddfa | 2018-08-14 10:06:54 +0100 | [diff] [blame^] | 1 | //===- ScheduleDAGMutation.h - MachineInstr Scheduling ----------*- 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 implements the ScheduleDAGMutation class, which represents |
| 11 | // a target-specific mutation of the dependency graph for scheduling. |
| 12 | // |
| 13 | //===----------------------------------------------------------------------===// |
| 14 | |
| 15 | #ifndef LLVM_CODEGEN_SCHEDULEDAGMUTATION_H |
| 16 | #define LLVM_CODEGEN_SCHEDULEDAGMUTATION_H |
| 17 | |
| 18 | namespace llvm { |
| 19 | |
| 20 | class ScheduleDAGInstrs; |
| 21 | |
| 22 | /// Mutate the DAG as a postpass after normal DAG building. |
| 23 | class ScheduleDAGMutation { |
| 24 | virtual void anchor(); |
| 25 | |
| 26 | public: |
| 27 | virtual ~ScheduleDAGMutation() = default; |
| 28 | |
| 29 | virtual void apply(ScheduleDAGInstrs *DAG) = 0; |
| 30 | }; |
| 31 | |
| 32 | } // end namespace llvm |
| 33 | |
| 34 | #endif // LLVM_CODEGEN_SCHEDULEDAGMUTATION_H |