LLVM 20.0.0git
Public Member Functions | List of all members
llvm::InsertCFGStrategy Class Reference

Strategy to split a random block and insert a random CFG in between. More...

#include "llvm/FuzzMutate/IRMutator.h"

Inheritance diagram for llvm::InsertCFGStrategy:
Inheritance graph
[legend]

Public Member Functions

 InsertCFGStrategy (uint64_t MNC=8)
 
uint64_t getWeight (size_t CurrentSize, size_t MaxSize, uint64_t CurrentWeight) override
 Provide a weight to bias towards choosing this strategy for a mutation.
 
void mutate (BasicBlock &BB, RandomIRBuilder &IB) override
 
- Public Member Functions inherited from llvm::IRMutationStrategy
virtual ~IRMutationStrategy ()=default
 
virtual uint64_t getWeight (size_t CurrentSize, size_t MaxSize, uint64_t CurrentWeight)=0
 Provide a weight to bias towards choosing this strategy for a mutation.
 
virtual void mutate (Module &M, RandomIRBuilder &IB)
 
virtual void mutate (Function &F, RandomIRBuilder &IB)
 
virtual void mutate (Instruction &I, RandomIRBuilder &IB)
 

Detailed Description

Strategy to split a random block and insert a random CFG in between.

Definition at line 149 of file IRMutator.h.

Constructor & Destructor Documentation

◆ InsertCFGStrategy()

llvm::InsertCFGStrategy::InsertCFGStrategy ( uint64_t  MNC = 8)
inline

Definition at line 155 of file IRMutator.h.

Member Function Documentation

◆ getWeight()

uint64_t llvm::InsertCFGStrategy::getWeight ( size_t  CurrentSize,
size_t  MaxSize,
uint64_t  CurrentWeight 
)
inlineoverridevirtual

Provide a weight to bias towards choosing this strategy for a mutation.

The value of the weight is arbitrary, but a good default is "the number of distinct ways in which this strategy can mutate a unit". This can also be used to prefer strategies that shrink the overall size of the result when we start getting close to MaxSize.

Implements llvm::IRMutationStrategy.

Definition at line 156 of file IRMutator.h.

◆ mutate()

void InsertCFGStrategy::mutate ( BasicBlock BB,
RandomIRBuilder IB 
)
overridevirtual

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