llvm::InstModificationIRStrategy Class Reference

#include "llvm/FuzzMutate/IRMutator.h"

Inheritance diagram for llvm::InstModificationIRStrategy:

Collaboration diagram for llvm::InstModificationIRStrategy:

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

Detailed Description

Definition at line 108 of file IRMutator.h.

Member Function Documentation

getWeight()

uint64_t llvm::InstModificationIRStrategy::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 110 of file IRMutator.h.

mutate() [1/5]

void IRMutationStrategy::mutate

Definition at line 55 of file IRMutator.cpp.

mutate() [2/5]

void IRMutationStrategy::mutate

Definition at line 51 of file IRMutator.cpp.

mutate() [3/5]

virtual void llvm::IRMutationStrategy::mutate

inline

Definition at line 54 of file IRMutator.h.

mutate() [4/5]

void InstModificationIRStrategy::mutate ( Instruction &  Inst, RandomIRBuilder &  IB  )

overridevirtual

Reimplemented from llvm::IRMutationStrategy.

Definition at line 209 of file IRMutator.cpp.

References llvm::MCID::Add, function, GEP, llvm::Instruction::getOpcode(), llvm::CmpInst::ICMP_EQ, llvm::CmpInst::ICMP_NE, llvm::CmpInst::ICMP_SGE, llvm::CmpInst::ICMP_SGT, llvm::CmpInst::ICMP_SLE, llvm::CmpInst::ICMP_SLT, llvm::CmpInst::ICMP_UGE, llvm::CmpInst::ICMP_UGT, llvm::CmpInst::ICMP_ULE, llvm::CmpInst::ICMP_ULT, llvm::makeSampler(), Mul, llvm::RandomIRBuilder::Rand, llvm::Instruction::setHasNoSignedWrap(), llvm::Instruction::setHasNoUnsignedWrap(), and llvm::CmpInst::setPredicate().

mutate() [5/5]

void IRMutationStrategy::mutate

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

Definition at line 39 of file IRMutator.cpp.

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

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