BFRenameLiveRange.hh

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/*
    Copyright (c) 2002-2014 Tampere University.
 
    This file is part of TTA-Based Codesign Environment (TCE).
 
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/**
 * @file BFRenameLiveRange.hh
 *
 * Declaration of BFRenameLiveRange class
 *
 * Renames a liverange, consisting of one or more writes,
 * and one or more either register reads or guadrd uses of the register.
 *
 * @author Heikki Kultala 2014-2020(heikki.kultala-no.spam-tuni.fi)
 * @note rating: red
 */
 
#ifndef BF_RENAME_LIVERANGE_HH
#define BF_RENAME_LIVERANGE_HH
 
#include "BFOptimization.hh"
#include "LiveRangeData.hh"
#include "DataDependenceGraph.hh"
#include "Terminal.hh"
 
class BFRenameLiveRange : public BFOptimization {
 
public:
    BFRenameLiveRange(BF2Scheduler& sched,
                      std::shared_ptr<LiveRange> liveRange,
                      int targetCycle);
 
    virtual bool operator()();
    virtual ~BFRenameLiveRange();
 
protected:
    void undoSetTerminal();
    void setTerminals();
 
    void setGuard(TTAProgram::Move& move,
                  const TTAMachine::RegisterFile& rf, int regIndex);
    void setRegDefsAndLastUses();
    void undoSetRegDefsAndLastUses();
    void setFirstDefsAndUses();
    void undoSetFirstDefsAndUses();
    void setOutgoingDeps();
    void setIncomingDeps();
    void unsetIncomingDeps();
    void unsetOutgoingDeps();
    void undoNewAntiDeps();
    void notifySelector();
 
    bool renameLiveRange(
        class LiveRange& liveRange,
        const class TCEString& reg,
        bool usedAfter);
 
    virtual void undoOnlyMe() override;
 
    DataDependenceGraph::UndoData undoWriteUpdateData_;
    std::map<const MoveNode*,
             DataDependenceGraph::UndoData,
             MoveNode::Comparator>
    undoReadUpdateData_;
 
    class TTAProgram::Terminal* oldReg_;
    std::shared_ptr<LiveRange> liveRange_;
    TTAProgram::BasicBlock* bb_;
    TCEString newReg_;
 
    MoveNodeUse oldLastKill_;
    MoveNodeUse oldKill_;
    int targetCycle_;
 
    LiveRangeData::MoveNodeUseSet oldRegDefines_;
    LiveRangeData::MoveNodeUseSet oldRegFirstDefines_;
    LiveRangeData::MoveNodeUseSet oldRegFirstUses_;
    DataDependenceGraph::EdgeSet createdAntidepEdges_;
 
 
};
 
#endif