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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 | //===- 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
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