Strategy that injects operations into the function. More...

#include "llvm/FuzzMutate/IRMutator.h"

Inheritance diagram for llvm::InjectorIRStrategy:

Collaboration diagram for llvm::InjectorIRStrategy:

Public Member Functions
	InjectorIRStrategy (std::vector< fuzzerop::OpDescriptor > &&Operations)

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. More...

void	mutate (Function &F, RandomIRBuilder &IB) override

void	mutate (BasicBlock &BB, RandomIRBuilder &IB) override

Public Member Functions inherited from llvm::IRMutationStrategy
virtual	~IRMutationStrategy ()=default

virtual void	mutate (Module &M, RandomIRBuilder &IB)

virtual void	mutate (Instruction &I, RandomIRBuilder &IB)

Static Public Member Functions
static std::vector< fuzzerop::OpDescriptor >	getDefaultOps ()

Detailed Description

Strategy that injects operations into the function.

Definition at line 75 of file IRMutator.h.

Constructor & Destructor Documentation

◆ InjectorIRStrategy()

llvm::InjectorIRStrategy::InjectorIRStrategy ( std::vector< fuzzerop::OpDescriptor > && Operations )

inline

Definition at line 82 of file IRMutator.h.

Member Function Documentation

◆ getDefaultOps()

std::vector< fuzzerop::OpDescriptor > InjectorIRStrategy::getDefaultOps ( )

static

Definition at line 85 of file IRMutator.cpp.

References llvm::describeFuzzerAggregateOps(), llvm::describeFuzzerControlFlowOps(), llvm::describeFuzzerFloatOps(), llvm::describeFuzzerIntOps(), llvm::describeFuzzerPointerOps(), llvm::describeFuzzerVectorOps(), llvm::make_filter_range(), llvm::makeSampler(), llvm::None, and llvm::RandomIRBuilder::Rand.

◆ getWeight()

uint64_t llvm::InjectorIRStrategy::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 86 of file IRMutator.h.

References F(), and llvm::IRMutationStrategy::mutate().