BFShareOperandLate.hh

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/*
    Copyright (c) 2002-2014 Tampere University.
 
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/**
 * @file BFShareOperandLate.hh
 *
 * Declaration of BFShareOperandLate class.
 *
 * Performs an operands sharing between two (or more) operations,
 * after already scheduling these operations.
 *
 * @author Heikki Kultala 2014-2020(heikki.kultala-no.spam-tuni.fi)
 * @note rating: red
 */
 
#include "BFShareOperand.hh"
//#include "BFOptimization.hh"
 
namespace TTAMachine {
    class Bus;
}
 
class BF2Scheduler;
 
class BFShareOperandLate : public BFShareOperand {
public:
    BFShareOperandLate(
        BF2Scheduler& sched,
        MoveNode& removed,
        MoveNode& scheduled) :
        BFShareOperand(sched, removed, scheduled), originalCycle_(-1),
        originalRemovedPrologBus_(NULL),
        originalSharedPrologBus_(NULL),
        removedImmWriteCycle_(-1),
        removedPrologImmWriteCycle_(-1),
        removedImmu_(NULL),
        removedImmRegIndex_(-1),
        sharedImmWriteCycle_(-1),
        sharedPrologImmWriteCycle_(-1),
        sharedImmu_(NULL),
        sharedImmRegIndex_(-1) {}
    virtual bool operator()();
    virtual ~BFShareOperandLate() {}
protected:
    virtual void undoOnlyMe();
private:
    void revert(int cycle);
    int originalCycle_;
    const TTAMachine::Bus* originalRemovedBus_;
    const TTAMachine::Bus* originalSharedBus_;
    const TTAMachine::Bus* originalRemovedPrologBus_;
    const TTAMachine::Bus* originalSharedPrologBus_;
 
    int removedImmWriteCycle_;
    int removedPrologImmWriteCycle_;
    const TTAMachine::ImmediateUnit* removedImmu_;
    int removedImmRegIndex_;
 
    int sharedImmWriteCycle_;
    int sharedPrologImmWriteCycle_;
    const TTAMachine::ImmediateUnit* sharedImmu_;
    int sharedImmRegIndex_;
};