BFUnscheduleMove.hh

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/*
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/**
 * @file BFUnscheduleMove.hh
 *
 * Declaration of BFUnscheduleMove class
 *
 * Unschedules a move.
 *
 * @author Heikki Kultala 2014-2020(heikki.kultala-no.spam-tuni.fi)
 * @note rating: red
 */
 
#ifndef BF_UNSCHEDULE_MOVE_HH
#define BF_UNSCHEDULE_MOVE_HH
 
#include "BFOptimization.hh"
 
namespace TTAMachine {
    class Bus;
    class FunctionUnit;
}
 
class MoveNode;
 
class BFUnscheduleMove: public BFOptimization {
 
public:
    BFUnscheduleMove(
        BF2Scheduler& sched, MoveNode& mn) :
        BFOptimization(sched), mn_(mn), prologBus_(NULL),
        oldImmWriteCycle_(-1), prologImmWriteCycle_(-1), dstFU_(NULL),
        srcFU_(NULL), immu_(NULL), immRegIndex_(-1) {}
    void unscheduleOriginal();
    void undoOnlyMe();
    bool operator()();
protected:
    void returnOriginal();
    MoveNode& mn_;
    int oldCycle_;
    const TTAMachine::Bus* oldBus_;
    const TTAMachine::Bus* prologBus_;
    int oldImmWriteCycle_;
    int prologImmWriteCycle_;
    const TTAMachine::FunctionUnit* dstFU_;
    const TTAMachine::FunctionUnit *srcFU_;
    const TTAMachine::ImmediateUnit* immu_;
    int immRegIndex_;
    static int recurseCounter_;
};
 
#endif