LLVM  9.0.0svn
ScheduleDAGMutation.h
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1 //===- ScheduleDAGMutation.h - MachineInstr Scheduling ----------*- C++ -*-===//
2 //
3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4 // See https://llvm.org/LICENSE.txt for license information.
5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6 //
7 //===----------------------------------------------------------------------===//
8 //
9 // This file implements the ScheduleDAGMutation class, which represents
10 // a target-specific mutation of the dependency graph for scheduling.
11 //
12 //===----------------------------------------------------------------------===//
13 
14 #ifndef LLVM_CODEGEN_SCHEDULEDAGMUTATION_H
15 #define LLVM_CODEGEN_SCHEDULEDAGMUTATION_H
16 
17 namespace llvm {
18 
19 class ScheduleDAGInstrs;
20 
21 /// Mutate the DAG as a postpass after normal DAG building.
23  virtual void anchor();
24 
25 public:
26  virtual ~ScheduleDAGMutation() = default;
27 
28  virtual void apply(ScheduleDAGInstrs *DAG) = 0;
29 };
30 
31 } // end namespace llvm
32 
33 #endif // LLVM_CODEGEN_SCHEDULEDAGMUTATION_H
This class represents lattice values for constants.
Definition: AllocatorList.h:23
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