class CallGraphNode

Declaration

class CallGraphNode { /* full declaration omitted */ };

Description

A node in the call graph for a module. Typically represents a function in the call graph. There are also special "null" nodes used to represent theoretical entries in the call graph.

Declared at: llvm/include/llvm/Analysis/CallGraph.h:166

Member Variables

private llvm::CallGraph* CG

private llvm::Function* F

private std::vector<CallRecord> CalledFunctions

private unsigned int NumReferences = 0

The number of times that this CallGraphNode occurs in the CalledFunctions array of this or other CallGraphNodes.

Method Overview

• private void AddRef()
• public CallGraphNode(const llvm::CallGraphNode &)
• public inline CallGraphNode(llvm::CallGraph * CG, llvm::Function * F)
• private void DropRef()
• public void addCalledFunction(llvm::CallBase * Call, llvm::CallGraphNode * M)
• private void allReferencesDropped()
• public inline llvm::CallGraphNode::const_iterator begin() const
• public inline llvm::CallGraphNode::iterator begin()
• public void dump() const
• public inline bool empty() const
• public inline llvm::CallGraphNode::const_iterator end() const
• public inline llvm::CallGraphNode::iterator end()
• public llvm::Function * getFunction() const
• public unsigned int getNumReferences() const
• public void print(llvm::raw_ostream & OS) const
• public void removeAllCalledFunctions()
• public void removeAnyCallEdgeTo(llvm::CallGraphNode * Callee)
• public void removeCallEdge(llvm::CallGraphNode::iterator I)
• public void removeCallEdgeFor(llvm::CallBase & Call)
• public void removeOneAbstractEdgeTo(llvm::CallGraphNode * Callee)
• public void replaceCallEdge(llvm::CallBase & Call, llvm::CallBase & NewCall, llvm::CallGraphNode * NewNode)
• public inline unsigned int size() const
• public void stealCalledFunctionsFrom(llvm::CallGraphNode * N)
• public ~CallGraphNode()

Methods

¶void AddRef()

Declared at: llvm/include/llvm/Analysis/CallGraph.h:293

¶CallGraphNode(const llvm::CallGraphNode&)

Declared at: llvm/include/llvm/Analysis/CallGraph.h:186

Parameters

const llvm::CallGraphNode&

¶inline CallGraphNode(llvm::CallGraph* CG,
                     llvm::Function* F)

Description

Creates a node for the specified function.

Declared at: llvm/include/llvm/Analysis/CallGraph.h:184

Parameters

llvm::CallGraph* CG

llvm::Function* F

¶void DropRef()

Declared at: llvm/include/llvm/Analysis/CallGraph.h:292

¶void addCalledFunction(llvm::CallBase* Call,
                       llvm::CallGraphNode* M)

Description

Adds a function to the list of functions called by this one.

Declared at: llvm/include/llvm/Analysis/CallGraph.h:242

Parameters

llvm::CallBase* Call

llvm::CallGraphNode* M

¶void allReferencesDropped()

Description

A special function that should only be used by the CallGraph class.

Declared at: llvm/include/llvm/Analysis/CallGraph.h:296

¶inline llvm::CallGraphNode::const_iterator begin()
    const

Declared at: llvm/include/llvm/Analysis/CallGraph.h:201

¶inline llvm::CallGraphNode::iterator begin()

Declared at: llvm/include/llvm/Analysis/CallGraph.h:199

¶void dump() const

Description

Print out this call graph node.

Declared at: llvm/include/llvm/Analysis/CallGraph.h:217

¶inline bool empty() const

Declared at: llvm/include/llvm/Analysis/CallGraph.h:203

¶inline llvm::CallGraphNode::const_iterator end()
    const

Declared at: llvm/include/llvm/Analysis/CallGraph.h:202

¶inline llvm::CallGraphNode::iterator end()

Declared at: llvm/include/llvm/Analysis/CallGraph.h:200

¶llvm::Function* getFunction() const

Description

Returns the function that this call graph node represents.

Declared at: llvm/include/llvm/Analysis/CallGraph.h:197

¶unsigned int getNumReferences() const

Description

Returns the number of other CallGraphNodes in this CallGraph that reference this node in their callee list.

Declared at: llvm/include/llvm/Analysis/CallGraph.h:208

¶void print(llvm::raw_ostream& OS) const

Declared at: llvm/include/llvm/Analysis/CallGraph.h:218

Parameters

llvm::raw_ostream& OS

¶void removeAllCalledFunctions()

Description

Removes all edges from this CallGraphNode to any functions it calls.

Declared at: llvm/include/llvm/Analysis/CallGraph.h:227

¶void removeAnyCallEdgeTo(
    llvm::CallGraphNode* Callee)

Description

Removes all call edges from this node to the specified callee function. This takes more time to execute than removeCallEdgeTo, so it should not be used unless necessary.

Declared at: llvm/include/llvm/Analysis/CallGraph.h:267

Parameters

llvm::CallGraphNode* Callee

¶void removeCallEdge(
    llvm::CallGraphNode::iterator I)

Declared at: llvm/include/llvm/Analysis/CallGraph.h:251

Parameters

llvm::CallGraphNode::iterator I

¶void removeCallEdgeFor(llvm::CallBase& Call)

Description

Removes the edge in the node for the specified call site. Note that this method takes linear time, so it should be used sparingly.

Declared at: llvm/include/llvm/Analysis/CallGraph.h:260

Parameters

llvm::CallBase& Call

¶void removeOneAbstractEdgeTo(
    llvm::CallGraphNode* Callee)

Description

Removes one edge associated with a null callsite from this node to the specified callee function.

Declared at: llvm/include/llvm/Analysis/CallGraph.h:271

Parameters

llvm::CallGraphNode* Callee

¶void replaceCallEdge(llvm::CallBase& Call,
                     llvm::CallBase& NewCall,
                     llvm::CallGraphNode* NewNode)

Description

Replaces the edge in the node for the specified call site with a new one. Note that this method takes linear time, so it should be used sparingly.

Declared at: llvm/include/llvm/Analysis/CallGraph.h:277

Parameters

llvm::CallBase& Call

llvm::CallBase& NewCall

llvm::CallGraphNode* NewNode

¶inline unsigned int size() const

Declared at: llvm/include/llvm/Analysis/CallGraph.h:204

¶void stealCalledFunctionsFrom(
    llvm::CallGraphNode* N)

Description

Moves all the callee information from N to this node.

Declared at: llvm/include/llvm/Analysis/CallGraph.h:235

Parameters

llvm::CallGraphNode* N

¶~CallGraphNode()

Declared at: llvm/include/llvm/Analysis/CallGraph.h:189