#include <BFPostpassDRE.hh>

Inheritance diagram for BFPostpassDRE:

Collaboration diagram for BFPostpassDRE:

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

bool	operator() () override

Public Member Functions inherited from BFKillNode
	BFKillNode (BF2Scheduler &sched, MoveNode &mn)

void	undoOnlyMe ()

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 ()

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

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

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 inherited from BFKillNode
DataDependenceGraph::EdgeSet	createdEdges_

MoveNode &	mn_

Protected Attributes inherited from BFOptimization
BF2Scheduler &	sched_

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

std::stack< Reversible * >	postChildren_

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

Detailed Description

Definition at line 42 of file BFPostpassDRE.hh.

Constructor & Destructor Documentation

◆ BFPostpassDRE()

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

inline

Definition at line 44 of file BFPostpassDRE.hh.

44 :

45 BFKillNode(sched, mn) {}

Member Function Documentation

◆ operator()()

bool BFPostpassDRE::operator() ( )

overridevirtual

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

Reimplemented from BFKillNode.

Definition at line 44 of file BFPostpassDRE.cc.

                           {
     if (!sched_.killDeadResults() || targetMachine().alwaysWriteResults()) {
 #ifdef DEBUG_BUBBLEFISH_SCHEDULER
         std::cerr << "\t\t\t\t\tdre forbidden!" << std::endl;
 #endif
         return false;
     }
  
     if (ddg().resultUsed(mn_)) {
 #ifdef DEBUG_BUBBLEFISH_SCHEDULER
         std::cerr << "\t\t\t\tresult is used!" << std::endl;
 #endif
         return false;
     }
  
     // then remove
     createdEdges_ = ddg().copyDepsOver(mn_, true, false);
     ddg().dropNode(mn_);
     sched_.nodeAndCopyKilled(mn_);
     return true;
 }

References DataDependenceGraph::copyDepsOver(), BFKillNode::createdEdges_, BFOptimization::ddg(), BoostGraph< GraphNode, GraphEdge >::dropNode(), BF2Scheduler::killDeadResults(), BFKillNode::mn_, BF2Scheduler::nodeAndCopyKilled(), BFOptimization::sched_, and BFOptimization::targetMachine().

Here is the call graph for this function:

The documentation for this class was generated from the following files:

Public Member Functions

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

◆ BFPostpassDRE()

Member Function Documentation

◆ operator()()