]> CyberLeo.Net >> Repos - FreeBSD/FreeBSD.git/blob - contrib/llvm/include/llvm/CodeGen/ScheduleDAGMutation.h
Import tzdata 2018d
[FreeBSD/FreeBSD.git] / contrib / llvm / include / llvm / CodeGen / ScheduleDAGMutation.h
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