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