LLVM  8.0.1
ScheduleDAGMutation.h
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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.
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
This class represents lattice values for constants.
Definition: AllocatorList.h:24
Mutate the DAG as a postpass after normal DAG building.
A ScheduleDAG for scheduling lists of MachineInstr.
virtual ~ScheduleDAGMutation()=default
virtual void apply(ScheduleDAGInstrs *DAG)=0