SVF::BranchStmt Class Reference

#include <SVFStatements.h>

Inheritance diagram for SVF::BranchStmt:

Public Types
typedef std::vector< std::pair< const ICFGNode *, s32_t > >	SuccAndCondPairVec
Public Types inherited from SVF::SVFStmt
enum	PEDGEK {   Addr , Copy , Store , Load ,   Call , Ret , Gep , Phi ,   Select , Cmp , BinaryOp , UnaryOp ,   Branch , ThreadFork , ThreadJoin }
typedef GenericNode< SVFVar, SVFStmt >::GEdgeSetTy	SVFStmtSetTy
typedef Map< EdgeID, SVFStmtSetTy >	PAGEdgeToSetMapTy
typedef PAGEdgeToSetMapTy	KindToSVFStmtMapTy
typedef SVFStmtSetTy	PAGEdgeSetTy
Public Types inherited from SVF::GenericEdge< NodeTy >
typedef NodeTy	NodeType
	Node type.
typedef u64_t	GEdgeFlag
typedef s64_t	GEdgeKind
typedef struct SVF::GenericEdge::equalGEdge	equalGEdge
	Add the hash function for std::set (we also can overload operator< to implement this)

Public Member Functions
	BranchStmt (SVFVar *inst, SVFVar *c, const SuccAndCondPairVec &succs)
	constructor
bool	isUnconditional () const
	The branch is unconditional if cond is a null value.
bool	isConditional () const
	The branch is conditional if cond is not a null value.
const SVFVar *	getCondition () const
	Return the condition.
const SVFVar *	getBranchInst () const
u32_t	getNumSuccessors () const
const SuccAndCondPairVec &	getSuccessors () const
const ICFGNode *	getSuccessor (u32_t i) const
s64_t	getSuccessorCondValue (u32_t i) const
virtual const std::string	toString () const override
Public Member Functions inherited from SVF::SVFStmt
	SVFStmt (SVFVar *s, SVFVar *d, GEdgeFlag k, bool real=true)
	Constructor.
	~SVFStmt ()
	Destructor.
EdgeID	getEdgeID () const
	Return Edge ID.
virtual bool	isPTAEdge () const
	Whether src and dst nodes are both of pointer type.
void	setValue (const SVFVar *val)
	Get/set methods for llvm instruction.
const SVFVar *	getValue () const
void	setBB (const SVFBasicBlock *bb)
const SVFBasicBlock *	getBB () const
void	setICFGNode (ICFGNode *node)
ICFGNode *	getICFGNode () const
Public Member Functions inherited from SVF::GenericEdge< NodeTy >
	GenericEdge (NodeTy *s, NodeTy *d, GEdgeFlag k)
	Constructor.
virtual	~GenericEdge ()
	Destructor.
NodeID	getSrcID () const
	get methods of the components
NodeID	getDstID () const
GEdgeKind	getEdgeKind () const
GEdgeKind	getEdgeKindWithoutMask () const
NodeType *	getSrcNode () const
NodeType *	getDstNode () const
virtual bool	operator== (const GenericEdge< NodeType > *rhs) const

Static Public Member Functions
static bool	classof (const BranchStmt *)
	Methods for support type inquiry through isa, cast, and dyn_cast:
static bool	classof (const SVFStmt *edge)
static bool	classof (const GenericPAGEdgeTy *edge)
Static Public Member Functions inherited from SVF::SVFStmt
static bool	classof (const SVFStmt *)
	ClassOf.
static bool	classof (const GenericPAGEdgeTy *edge)
static GEdgeFlag	makeEdgeFlagWithAddionalOpnd (GEdgeKind k, const SVFVar *var)
static GEdgeFlag	makeEdgeFlagWithCallInst (GEdgeKind k, const ICFGNode *cs)
static GEdgeFlag	makeEdgeFlagWithStoreInst (GEdgeKind k, const ICFGNode *store)

Private Member Functions
	BranchStmt (const BranchStmt &)
	place holder
void	operator= (const BranchStmt &)
	place holder
SVFVar *	getSrcNode ()
	place holder, not allowed
SVFVar *	getDstNode ()
	place holder, not allowed
NodeID	getSrcID ()
	place holder, use getOpVarID(pos) instead
NodeID	getDstID ()
	place holder, use getResID() instead

Private Attributes
SuccAndCondPairVec	successors
const SVFVar *	cond
const SVFVar *	brInst

Additional Inherited Members
Static Public Attributes inherited from SVF::SVFStmt
static u32_t	totalEdgeNum
	Total edge number.
Protected Member Functions inherited from SVF::SVFStmt
	SVFStmt (GEdgeFlag k)
	Private constructor for reading SVFIR from file without side-effect.
Static Protected Attributes inherited from SVF::GenericEdge< NodeTy >
static constexpr unsigned char	EdgeKindMaskBits = 8
	We use the lower 8 bits to denote edge kind.
static constexpr u64_t	EdgeKindMask = (~0ULL) >> (64 - EdgeKindMaskBits)

Detailed Description

Branch statements including if/else and switch

Definition at line 1101 of file SVFStatements.h.

Member Typedef Documentation

SuccAndCondPairVec

typedef std::vector<std::pair<const ICFGNode*, s32_t> > SVF::BranchStmt::SuccAndCondPairVec

Definition at line 1105 of file SVFStatements.h.

Constructor & Destructor Documentation

BranchStmt() [1/2]

SVF::BranchStmt::BranchStmt ( const BranchStmt &  )

private

place holder

BranchStmt() [2/2]

SVF::BranchStmt::BranchStmt ( SVFVar *  inst, SVFVar *  c, const SuccAndCondPairVec &  succs  )

inline

constructor

Definition at line 1137 of file SVFStatements.h.

        : SVFStmt(c, inst, SVFStmt::Branch), successors(succs), cond(c),
          brInst(inst)
    {
    }

Member Function Documentation

classof() [1/3]

static bool SVF::BranchStmt::classof ( const BranchStmt *  )

inlinestatic

Methods for support type inquiry through isa, cast, and dyn_cast:

Definition at line 1122 of file SVFStatements.h.

    {
        return true;
    }

classof() [2/3]

static bool SVF::BranchStmt::classof ( const GenericPAGEdgeTy *  edge )

inlinestatic

Definition at line 1130 of file SVFStatements.h.

    {
        return edge->getEdgeKind() == SVFStmt::Branch;
    }

classof() [3/3]

static bool SVF::BranchStmt::classof ( const SVFStmt *  edge )

inlinestatic

Definition at line 1126 of file SVFStatements.h.

    {
        return edge->getEdgeKind() == SVFStmt::Branch;
    }

getBranchInst()

const SVFVar * SVF::BranchStmt::getBranchInst ( ) const

inline

Definition at line 1149 of file SVFStatements.h.

    {
        return brInst;
    }

getCondition()

const SVFVar * BranchStmt::getCondition

(

)

const

Return the condition.

Definition at line 322 of file SVFStatements.cpp.

{
    //assert(isConditional() && "this is a unconditional branch");
    return cond;
}

getDstID()

NodeID SVF::BranchStmt::getDstID ( )

private

place holder, use getResID() instead

getDstNode()

SVFVar * SVF::BranchStmt::getDstNode ( )

private

place holder, not allowed

getNumSuccessors()

u32_t SVF::BranchStmt::getNumSuccessors ( ) const

inline

For example if(c) {stmt1} else {stmt2} successor(0): stmt1, 1 successor(1): stmt2, 0 For example switch(c) case 0: {stmt1; break;} case 1: {stmt2; break;} default {stmt3: break} successor(0): stmt1, 0 successor(1): stmt2, 1 successor(3): stmt3, -1 Successors of this branch statement

Definition at line 1164 of file SVFStatements.h.

    {
        return successors.size();
    }

getSrcID()

NodeID SVF::BranchStmt::getSrcID ( )

private

place holder, use getOpVarID(pos) instead

getSrcNode()

SVFVar * SVF::BranchStmt::getSrcNode ( )

private

place holder, not allowed

getSuccessor()

const ICFGNode * SVF::BranchStmt::getSuccessor ( u32_t  i ) const

inline

Definition at line 1172 of file SVFStatements.h.

    {
        return successors.at(i).first;
    }

getSuccessorCondValue()

s64_t SVF::BranchStmt::getSuccessorCondValue ( u32_t  i ) const

inline

Definition at line 1176 of file SVFStatements.h.

    {
        return successors.at(i).second;
    }

getSuccessors()

const SuccAndCondPairVec & SVF::BranchStmt::getSuccessors ( ) const

inline

Definition at line 1168 of file SVFStatements.h.

    {
        return successors;
    }

isConditional()

bool BranchStmt::isConditional

(

)

const

The branch is conditional if cond is not a null value.

Definition at line 317 of file SVFStatements.cpp.

{
    return cond->getId() != PAG::getPAG()->nullPtrSymID();;
}

isUnconditional()

bool BranchStmt::isUnconditional

(

)

const

The branch is unconditional if cond is a null value.

Definition at line 312 of file SVFStatements.cpp.

{
    return cond->getId() == PAG::getPAG()->nullPtrSymID();
}

operator=()

void SVF::BranchStmt::operator= ( const BranchStmt &  )

private

place holder

toString()

const std::string BranchStmt::toString ( ) const

overridevirtual

Reimplemented from SVF::SVFStmt.

Definition at line 171 of file SVFStatements.cpp.

{
    std::string str;
    std::stringstream rawstr(str);
    if(isConditional())
        rawstr << "BranchStmt: [Condition Var" <<  getCondition()->getId() << "]\n";
    else
        rawstr << "BranchStmt: [" <<  " Unconditional branch" << "]\n";
 
    for(u32_t i = 0; i < getNumSuccessors(); i++)
        rawstr << "Successor " << i << " ICFGNode" << getSuccessor(i)->getId() << "   ";
 
    if (Options::ShowSVFIRValue())
    {
        rawstr << "\n";
        rawstr << getValue()->toString();
    }
    return rawstr.str();
}

Member Data Documentation

brInst

const SVFVar* SVF::BranchStmt::brInst

private

Definition at line 1117 of file SVFStatements.h.

cond

const SVFVar* SVF::BranchStmt::cond

private

Definition at line 1116 of file SVFStatements.h.

successors

SuccAndCondPairVec SVF::BranchStmt::successors

private

Definition at line 1115 of file SVFStatements.h.

---

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

• /home/runner/work/SVF/SVF/svf/include/SVFIR/SVFStatements.h
• /home/runner/work/SVF/SVF/svf/lib/SVFIR/SVFStatements.cpp