Static Value-Flow Analysis
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Public Types | Public Member Functions | Static Public Member Functions | Private Member Functions | Private Attributes | Friends | List of all members
SVF::BranchStmt Class Reference

#include <SVFStatements.h>

Inheritance diagram for SVF::BranchStmt:
SVF::SVFStmt SVF::GenericEdge< NodeTy >

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, SVFStmtSetTyPAGEdgeToSetMapTy
 
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 SVFVargetCondition () const
 Return the condition.
 
const SVFVargetBranchInst () const
 
u32_t getNumSuccessors () const
 
const SuccAndCondPairVecgetSuccessors () const
 
const ICFGNodegetSuccessor (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 SVFVargetValue () const
 
void setBB (const SVFBasicBlock *bb)
 
const SVFBasicBlockgetBB () const
 
void setICFGNode (ICFGNode *node)
 
ICFGNodegetICFGNode () 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
 
NodeTypegetSrcNode () const
 
NodeTypegetDstNode () 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)
 
static const Inst2LabelMapgetInst2LabelMap ()
 
static const Var2LabelMapgetVar2LabelMap ()
 
static const u64_tgetCallEdgeLabelCounter ()
 
static const u64_tgetStoreEdgeLabelCounter ()
 
static const u64_tgetMultiOpndLabelCounter ()
 

Private Member Functions

 BranchStmt (const BranchStmt &)
 place holder
 
void operator= (const BranchStmt &)
 place holder
 
SVFVargetSrcNode ()
 place holder, not allowed
 
SVFVargetDstNode ()
 place holder, not allowed
 
NodeID getSrcID ()
 place holder, use getOpVarID(pos) instead
 
NodeID getDstID ()
 place holder, use getResID() instead
 

Private Attributes

SuccAndCondPairVec successors
 
const SVFVarcond
 
const SVFVarbrInst
 

Friends

class GraphDBClient
 

Additional Inherited Members

- Protected Member Functions inherited from SVF::SVFStmt
 SVFStmt (GEdgeFlag k)
 Private constructor for reading SVFIR from file without side-effect.
 
 SVFStmt (SVFVar *s, SVFVar *d, GEdgeFlag k, EdgeID eid, SVFVar *value, ICFGNode *icfgNode, bool real=true)
 
void setBasicBlock (const SVFBasicBlock *bb)
 
void setCallEdgeLabelCounter (u64_t counter)
 
void setStoreEdgeLabelCounter (u64_t counter)
 
void setMultiOpndLabelCounter (u64_t counter)
 
- Static Protected Member Functions inherited from SVF::SVFStmt
static void addInst2Labeled (const ICFGNode *cs, u32_t label)
 
static void addVar2Labeled (const SVFVar *var, u32_t label)
 
- 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 1210 of file SVFStatements.h.

Member Typedef Documentation

◆ SuccAndCondPairVec

Definition at line 1215 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 1247 of file SVFStatements.h.

1249 brInst(inst)
1250 {
1251 }
const SVFVar * brInst
SuccAndCondPairVec successors
const SVFVar * cond
SVFStmt(GEdgeFlag k)
Private constructor for reading SVFIR from file without side-effect.
llvm::IRBuilder IRBuilder
Definition BasicTypes.h:74

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 1232 of file SVFStatements.h.

1233 {
1234 return true;
1235 }

◆ classof() [2/3]

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

Definition at line 1240 of file SVFStatements.h.

1241 {
1242 return edge->getEdgeKind() == SVFStmt::Branch;
1243 }

◆ classof() [3/3]

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

Definition at line 1236 of file SVFStatements.h.

1237 {
1238 return edge->getEdgeKind() == SVFStmt::Branch;
1239 }

◆ getBranchInst()

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

Definition at line 1259 of file SVFStatements.h.

1260 {
1261 return brInst;
1262 }

◆ getCondition()

const SVFVar * BranchStmt::getCondition ( ) const

Return the condition.

Definition at line 332 of file SVFStatements.cpp.

333{
334 //assert(isConditional() && "this is a unconditional branch");
335 return cond;
336}

◆ 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 1274 of file SVFStatements.h.

1275 {
1276 return successors.size();
1277 }

◆ 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 1282 of file SVFStatements.h.

1283 {
1284 return successors.at(i).first;
1285 }

◆ getSuccessorCondValue()

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

Definition at line 1286 of file SVFStatements.h.

1287 {
1288 return successors.at(i).second;
1289 }

◆ getSuccessors()

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

Definition at line 1278 of file SVFStatements.h.

1279 {
1280 return successors;
1281 }

◆ isConditional()

bool BranchStmt::isConditional ( ) const

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

Definition at line 327 of file SVFStatements.cpp.

328{
329 return cond->getId() != PAG::getPAG()->nullPtrSymID();;
330}
NodeID nullPtrSymID() const
Definition IRGraph.h:183
static SVFIR * getPAG(bool buildFromFile=false)
Singleton design here to make sure we only have one instance during any analysis.
Definition SVFIR.h:116
NodeID getId() const
Get ID.
Definition SVFValue.h:160

◆ isUnconditional()

bool BranchStmt::isUnconditional ( ) const

The branch is unconditional if cond is a null value.

Definition at line 322 of file SVFStatements.cpp.

323{
324 return cond->getId() == PAG::getPAG()->nullPtrSymID();
325}

◆ 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 181 of file SVFStatements.cpp.

182{
183 std::string str;
184 std::stringstream rawstr(str);
185 if(isConditional())
186 rawstr << "BranchStmt: [Condition Var" << getCondition()->getId() << "]\n";
187 else
188 rawstr << "BranchStmt: [" << " Unconditional branch" << "]\n";
189
190 for(u32_t i = 0; i < getNumSuccessors(); i++)
191 rawstr << "Successor " << i << " ICFGNode" << getSuccessor(i)->getId() << " ";
192
194 {
195 rawstr << "\n";
196 rawstr << getValue()->toString();
197 }
198 return rawstr.str();
199}
unsigned u32_t
Definition CommandLine.h:18
u32_t getNumSuccessors() const
const ICFGNode * getSuccessor(u32_t i) const
bool isConditional() const
The branch is conditional if cond is not a null value.
const SVFVar * getCondition() const
Return the condition.
static const Option< bool > ShowSVFIRValue
Definition Options.h:119
const SVFVar * getValue() const
virtual const std::string toString() const
Get string representation.

Friends And Related Symbol Documentation

◆ GraphDBClient

friend class GraphDBClient
friend

Definition at line 1212 of file SVFStatements.h.

Member Data Documentation

◆ brInst

const SVFVar* SVF::BranchStmt::brInst
private

Definition at line 1227 of file SVFStatements.h.

◆ cond

const SVFVar* SVF::BranchStmt::cond
private

Definition at line 1226 of file SVFStatements.h.

◆ successors

SuccAndCondPairVec SVF::BranchStmt::successors
private

Definition at line 1225 of file SVFStatements.h.


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