#include <BFUnscheduleMove.hh>

Inheritance diagram for BFUnscheduleMove:

Collaboration diagram for BFUnscheduleMove:

Public Member Functions
	BFUnscheduleMove (BF2Scheduler &sched, MoveNode &mn)

void	unscheduleOriginal ()

void	undoOnlyMe ()

bool	operator() ()

Public Member Functions inherited from BFOptimization
	BFOptimization (BF2Scheduler &sched)

virtual bool	isFinishFront ()

virtual void	mightBeReady (MoveNode &mn)

Public Member Functions inherited from Reversible
virtual void	undo ()

virtual	~Reversible ()

void	deleteChildren (std::stack< Reversible * > &children)

int	id ()

	Reversible ()

Protected Member Functions
void	returnOriginal ()

Protected Member Functions inherited from BFOptimization
DataDependenceGraph &	ddg ()

DataDependenceGraph *	rootDDG ()

const DataDependenceGraph &	ddg () const

DataDependenceGraph *	prologDDG ()

SimpleResourceManager &	rm () const

SimpleResourceManager *	prologRM () const

BUMoveNodeSelector &	selector ()

const TTAMachine::Machine &	targetMachine () const

unsigned int	ii () const

MoveNodeDuplicator &	duplicator () const

virtual bool	assign (int cycle, MoveNode &, const TTAMachine::Bus bus=nullptr, const TTAMachine::FunctionUnit srcFU_=nullptr, const TTAMachine::FunctionUnit dstFU=nullptr, const TTAMachine::Bus prologBus=nullptr, int immWriteCycle=-1, int prologImmWriteCycle=-1, const TTAMachine::ImmediateUnit *immu=nullptr, int immRegIndex=-1, bool ignoreGuardWriteCycle=false)

virtual void	unassign (MoveNode &mn, bool disposePrologCopy=true)

virtual int	rmEC (int cycle, MoveNode &mn, const TTAMachine::Bus bus=nullptr, const TTAMachine::FunctionUnit srcFU=nullptr, const TTAMachine::FunctionUnit dstFU=nullptr, const TTAMachine::Bus prologBus=nullptr, int immWriteCycle=-1, int prologImmWriteCycle=-1, const TTAMachine::ImmediateUnit *immu=nullptr, int immRegIndex=-1)

virtual int	rmLC (int cycle, MoveNode &mn, const TTAMachine::Bus bus=nullptr, const TTAMachine::FunctionUnit srcFU=nullptr, const TTAMachine::FunctionUnit dstFU=nullptr, const TTAMachine::Bus prologBus=nullptr, int immWriteCycle=-1, int prologImmWriteCycle=-1, const TTAMachine::ImmediateUnit *immu=nullptr, int immRegIndex=-1)

virtual bool	canAssign (int cycle, MoveNode &mn, const TTAMachine::Bus bus=nullptr, const TTAMachine::FunctionUnit srcFU=nullptr, const TTAMachine::FunctionUnit dstFU=nullptr, const TTAMachine::Bus prologBus=nullptr, int immWriteCycle=-1, int prologImmWriteCycle=-1, const TTAMachine::ImmediateUnit *immu=nullptr, int immRegIndex=-1, bool ignoreGWN=false)

bool	putAlsoToPrologEpilog (int cycle, MoveNode &mn)

void	setPrologSrcFUAnno (MoveNode &prologMN, MoveNode &loopMN)

void	setPrologDstFUAnno (MoveNode &prologMN, MoveNode &loopMN)

void	setJumpGuard (MoveNode &mn)

void	unsetJumpGuard (MoveNode &mn)

bool	needJumpGuard (const MoveNode &mn, int cycle)

int	jumpGuardAvailableCycle (const MoveNode &mn)

bool	canBeSpeculated (const Operation &op)

bool	canBeSpeculated (const MoveNode &mn)

bool	usePrologMove (const MoveNode &mn)

bool	canBeScheduled (const MoveNode &mn)

const TTAMachine::RegisterFile *	RFReadPortCountPreventsScheduling (const MoveNode &mn)

bool	immCountPreventsScheduling (const MoveNode &mn)

Protected Member Functions inherited from Reversible
bool	runPreChild (Reversible *preChild)

bool	runPostChild (Reversible *preChild)

bool	runChild (std::stack< Reversible * > &children, Reversible *child)

bool	runChild (Reversible *child, bool pre)

void	undoAndRemovePreChildren ()

void	undoAndRemovePostChildren ()

void	undoAndRemoveChildren (std::stack< Reversible * > &children)

Protected Attributes
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_

Protected Attributes inherited from BFOptimization
BF2Scheduler &	sched_

Protected Attributes inherited from Reversible
std::stack< Reversible * >	preChildren_

std::stack< Reversible * >	postChildren_

Static Protected Attributes
static int	recurseCounter_ = 0

Static Protected Attributes inherited from BFOptimization
static std::map< MoveNode , MoveNode , MoveNode::Comparator >	prologMoves_

Additional Inherited Members
Static Public Member Functions inherited from BFOptimization
static void	clearPrologMoves ()

static MoveNode *	getSisterTrigger (const MoveNode &mn, const TTAMachine::Machine &mach)

Detailed Description

Definition at line 48 of file BFUnscheduleMove.hh.

Constructor & Destructor Documentation

◆ BFUnscheduleMove()

BFUnscheduleMove::BFUnscheduleMove	(	BF2Scheduler &	sched,
		MoveNode &	mn
	)

inline

Definition at line 51 of file BFUnscheduleMove.hh.

                                           :
        BFOptimization(sched), mn_(mn), prologBus_(NULL),
        oldImmWriteCycle_(-1), prologImmWriteCycle_(-1), dstFU_(NULL),
        srcFU_(NULL), immu_(NULL), immRegIndex_(-1) {}

Member Function Documentation

◆ operator()()

bool BFUnscheduleMove::operator() ( )

virtual

This performs the operation. Returns true if success, false if fail.

Implements Reversible.

Definition at line 152 of file BFUnscheduleMove.cc.

                             {
    unscheduleOriginal();
    return true;
}

References unscheduleOriginal().

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◆ returnOriginal()

void BFUnscheduleMove::returnOriginal ( )

protected

Definition at line 107 of file BFUnscheduleMove.cc.

                                      {
#ifdef DEBUG_BUBBLEFISH_SCHEDULER
    for (int i = 0; i < recurseCounter_*2; i++)
        std::cerr << "\t";
 
    std::cerr << "\t\treturning original: " << mn_.toString() << " current bus: "
              << mn_.move().bus().name() << " old bus: " << oldBus_->name()
              << " cycle: " << oldCycle_ << std::endl;
#endif
 
#ifdef DEBUG_BUBBLEFISH_SCHEDULER
    if (!canAssign(oldCycle_, mn_, oldBus_, srcFU_, dstFU_, prologBus_,
                   oldImmWriteCycle_, prologImmWriteCycle_, immu_,
                   immRegIndex_, true)) {
        std::cerr << "Cannot return to old cycle: " << mn_.toString() << " cycle: " << oldCycle_  << std::endl;
        if (mn_.isDestinationOperation()) {
            std::cerr << "dstPO: " << mn_.destinationOperation().toString() << std::endl;
        }
        if (mn_.isSourceOperation()) {
            std::cerr << "srcPO: " << mn_.sourceOperation().toString() << std::endl;
        }
        std::cerr << "Original bus: " << oldBus_->name() << std::endl;
        ddg().writeToDotFile("cannot_return_old_cycle.dot");
        TTAProgram::Instruction* ins = rm().instruction(oldCycle_);
        for (int i = 0; i < ins->moveCount(); i++) {
            std::cerr << "\t" << POMDisassembler::disassemble(ins->move(i))
                      << " bus: " << ins->move(i).bus().name()
                      << std::endl;
        }
        std::cerr << "ins contains " << ins->immediateCount() << " immediates." << std::endl;
        assert(false);
    }
#endif
    assign(oldCycle_, mn_, oldBus_, srcFU_, dstFU_, prologBus_,
       oldImmWriteCycle_, prologImmWriteCycle_, immu_, immRegIndex_);
}

References assert, BFOptimization::assign(), TTAProgram::Move::bus(), BFOptimization::canAssign(), BFOptimization::ddg(), MoveNode::destinationOperation(), POMDisassembler::disassemble(), dstFU_, TTAProgram::Instruction::immediateCount(), immRegIndex_, immu_, SimpleResourceManager::instruction(), MoveNode::isDestinationOperation(), MoveNode::isSourceOperation(), mn_, MoveNode::move(), TTAProgram::Instruction::move(), TTAProgram::Instruction::moveCount(), TTAMachine::Component::name(), oldBus_, oldCycle_, oldImmWriteCycle_, prologBus_, prologImmWriteCycle_, recurseCounter_, BFOptimization::rm(), MoveNode::sourceOperation(), srcFU_, MoveNode::toString(), ProgramOperation::toString(), and GraphBase< GraphNode, GraphEdge >::writeToDotFile().

Referenced by BFPushMoveUp::operator()(), BFPushMoveUp2::operator()(), BFRescheduleMove::undoOnlyMe(), and undoOnlyMe().

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◆ undoOnlyMe()

void BFUnscheduleMove::undoOnlyMe ( )

virtual

Undoes the operations done by this class but not children. This method should be overloaded by most derived classes.

Reimplemented from Reversible.

Definition at line 144 of file BFUnscheduleMove.cc.

                                  {
#ifdef DEBUG_BUBBLEFISH_SCHEDULER
    std::cerr << "BFUnscheudleMove undo" << std::endl;
#endif
    returnOriginal();
}

References returnOriginal().

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◆ unscheduleOriginal()

void BFUnscheduleMove::unscheduleOriginal ( )

Definition at line 47 of file BFUnscheduleMove.cc.

                                          {
    oldCycle_ = mn_.cycle();
    oldBus_ = &mn_.move().bus();
 
    if (mn_.isSourceOperation()) {
        srcFU_ = &mn_.move().source().functionUnit();
    }
 
    if (mn_.isDestinationOperation()) {
        dstFU_ = &mn_.move().destination().functionUnit();
    }
 
    if (mn_.move().source().isImmediateRegister()) {
        oldImmWriteCycle_ = rm().immediateWriteCycle(mn_);
        immRegIndex_ = mn_.move().source().index();
        immu_ = &mn_.move().source().immediateUnit();
    }
 
    MoveNode* prologMN = ii() ?  duplicator().getMoveNode(mn_) : NULL;
    if (prologMN != NULL) {
        prologBus_ = &prologMN->move().bus();
 
        if (prologMN->move().source().isImmediateRegister()) {
            prologImmWriteCycle_ = prologRM()->immediateWriteCycle(*prologMN);
        }
 
#ifdef DEBUG_BUBBLEFISH_SCHEDULER
        std::cerr << "\t\t\t\tProlog move: " << prologMN->toString() << std::endl;
        std::cerr << "\t\t\t\tBFUnscheduleMove Saving prolog bus: " << prologBus_->name() << " cycle: " << oldCycle_ << std::endl;
#endif
    }
#ifdef DEBUG_BUBBLEFISH_SCHEDULER
    for (int i = 0; i < recurseCounter_*2; i++)
        std::cerr << "\t";
        
    std::cerr << "\t\tUnscheduling original: " << mn_.toString() << " bus: " << oldBus_->name() << std::endl;
#endif
    unassign(mn_, false);
#ifdef DEBUG_BUBBLEFISH_SCHEDULER
    if (!canAssign(oldCycle_, mn_, oldBus_, srcFU_, dstFU_, prologBus_,
                   oldImmWriteCycle_, prologImmWriteCycle_)) {
        for (int i = 0; i < recurseCounter_*2; i++)
            std::cerr << "\t";
 
        std::cerr << "\t\tCannot assign to old cycle: " << mn_.toString()
                  << " old cycle: " << oldCycle_ << std::endl;
        ddg().writeToDotFile("cannot_assign_old_cycle.dot");
        if (mn_.isSourceOperation()) {
            std::cerr << "\t\twhole src PO: " << mn_.sourceOperation().toString()
                      << std::endl;
        }
        if (mn_.isDestinationOperation()) {
            std::cerr << "\t\twhole dst PO: " << mn_.destinationOperation().toString()
                      << std::endl;
        }
        assert(false);
    }
#endif
}