Line data    Source code

       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           0 :   virtual ~ScheduleDAGMutation() = default;
      28             : 
      29             :   virtual void apply(ScheduleDAGInstrs *DAG) = 0;
      30             : };
      31             : 
      32             : } // end namespace llvm
      33             : 
      34             : #endif // LLVM_CODEGEN_SCHEDULEDAGMUTATION_H