llvm::ShuffleBlockStrategy Class Reference

Strategy to randomly select a block and shuffle the operations without affecting data dependency. More...

#include "llvm/FuzzMutate/IRMutator.h"

Inheritance diagram for llvm::ShuffleBlockStrategy:

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.
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 (Function &F, RandomIRBuilder &IB)
virtual void	mutate (Instruction &I, RandomIRBuilder &IB)

Detailed Description

Strategy to randomly select a block and shuffle the operations without affecting data dependency.

Definition at line 195 of file IRMutator.h.

Member Function Documentation

getWeight()

uint64_t llvm::ShuffleBlockStrategy::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 197 of file IRMutator.h.

mutate()

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

overridevirtual

Reimplemented from llvm::IRMutationStrategy.

Definition at line 678 of file IRMutator.cpp.

References llvm::dyn_cast(), llvm::SmallSet< T, N, C >::empty(), getEffectiveTerminator(), llvm::BasicBlock::getFirstInsertionPt(), I, llvm::SmallSet< T, N, C >::insert(), llvm::make_early_inc_range(), llvm::make_range(), llvm::makeSampler(), P, and llvm::SmallVectorTemplateBase< T, bool >::push_back().

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

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