llvm::InjectorIRStrategy Class Reference

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

#include "llvm/FuzzMutate/IRMutator.h"

Inheritance diagram for llvm::InjectorIRStrategy:

Public Member Functions
	InjectorIRStrategy ()
	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.
void	mutate (Function &F, RandomIRBuilder &IB) override
void	mutate (BasicBlock &BB, RandomIRBuilder &IB) override
virtual void	mutate (Module &M, RandomIRBuilder &IB)
virtual void	mutate (Instruction &I, RandomIRBuilder &IB)
Public Member Functions inherited from llvm::IRMutationStrategy
virtual	~IRMutationStrategy ()=default

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

Detailed Description

Strategy that injects operations into the function.

Definition at line 90 of file IRMutator.h.

Constructor & Destructor Documentation

InjectorIRStrategy() [1/2]

llvm::InjectorIRStrategy::InjectorIRStrategy ( )

inline

Definition at line 97 of file IRMutator.h.

References getDefaultOps().

InjectorIRStrategy() [2/2]

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

inline

Definition at line 98 of file IRMutator.h.

References llvm::move().

Member Function Documentation

getDefaultOps()

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

static

Definition at line 98 of file IRMutator.cpp.

References AbstractManglingParser< Derived, Alloc >::Ops, llvm::describeFuzzerAggregateOps(), llvm::describeFuzzerControlFlowOps(), llvm::describeFuzzerFloatOps(), llvm::describeFuzzerIntOps(), llvm::describeFuzzerPointerOps(), and llvm::describeFuzzerVectorOps().

Referenced by InjectorIRStrategy().

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 102 of file IRMutator.h.

mutate() [1/4]

void InjectorIRStrategy::mutate ( BasicBlock & BB, RandomIRBuilder & IB )

overridevirtual

Reimplemented from llvm::IRMutationStrategy.

Definition at line 158 of file IRMutator.cpp.

References llvm::ArrayRef(), getInsertionRange(), llvm::make_pointer_range(), llvm::SmallVectorTemplateBase< T, bool >::push_back(), llvm::SmallVectorTemplateCommon< T, typename >::size(), and llvm::uniform().

mutate() [2/4]

void InjectorIRStrategy::mutate ( Function & F, RandomIRBuilder & IB )

overridevirtual

Reimplemented from llvm::IRMutationStrategy.

Definition at line 93 of file IRMutator.cpp.

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

mutate() [3/4]

virtual void llvm::IRMutationStrategy::mutate ( Instruction & I, RandomIRBuilder & IB )

inlinevirtual

Reimplemented from llvm::IRMutationStrategy.

Definition at line 55 of file IRMutator.h.

mutate() [4/4]

void IRMutationStrategy::mutate ( Module & M, RandomIRBuilder & IB )

virtual

Mutators for each IR unit. By default these forward to a contained instance of the next smaller unit.

Reimplemented from llvm::IRMutationStrategy.

Definition at line 52 of file IRMutator.cpp.

References F, and Range.

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

• include/llvm/FuzzMutate/IRMutator.h
• lib/FuzzMutate/IRMutator.cpp