llvm::RandomIRBuilder Struct Reference

#include "llvm/FuzzMutate/RandomIRBuilder.h"

Collaboration diagram for llvm::RandomIRBuilder:

Public Member Functions
	RandomIRBuilder (int Seed, ArrayRef< Type * > AllowedTypes)
Value *	findOrCreateSource (BasicBlock &BB, ArrayRef< Instruction * > Insts)
	Find a "source" for some operation, which will be used in one of the operation's operands. More...
Value *	findOrCreateSource (BasicBlock &BB, ArrayRef< Instruction * > Insts, ArrayRef< Value * > Srcs, fuzzerop::SourcePred Pred)
	Find a "source" for some operation, which will be used in one of the operation's operands. More...
Value *	newSource (BasicBlock &BB, ArrayRef< Instruction * > Insts, ArrayRef< Value * > Srcs, fuzzerop::SourcePred Pred)
	Create some Value suitable as a source for some operation. More...
void	connectToSink (BasicBlock &BB, ArrayRef< Instruction * > Insts, Value *V)
	Find a viable user for V in Insts, which should all be contained in BB. More...
void	newSink (BasicBlock &BB, ArrayRef< Instruction * > Insts, Value *V)
	Create a user for V in BB. More...
Value *	findPointer (BasicBlock &BB, ArrayRef< Instruction * > Insts, ArrayRef< Value * > Srcs, fuzzerop::SourcePred Pred)
Type *	chooseType (LLVMContext &Context, ArrayRef< Value * > Srcs, fuzzerop::SourcePred Pred)

Public Attributes
RandomEngine	Rand
SmallVector< Type *, 16 >	KnownTypes

Detailed Description

Definition at line 32 of file RandomIRBuilder.h.

Constructor & Destructor Documentation

RandomIRBuilder()

llvm::RandomIRBuilder::RandomIRBuilder ( int  Seed, ArrayRef< Type * >  AllowedTypes  )

inline

Definition at line 36 of file RandomIRBuilder.h.

Member Function Documentation

chooseType()

Type* llvm::RandomIRBuilder::chooseType	(	LLVMContext &	Context,
		ArrayRef< Value * >	Srcs,
		fuzzerop::SourcePred	Pred
	)

connectToSink()

void RandomIRBuilder::connectToSink	(	BasicBlock &	BB,
		ArrayRef< Instruction * >	Insts,
		Value *	V
	)

Find a viable user for V in Insts, which should all be contained in BB.

This may also create some new instruction in BB and use that.

Definition at line 98 of file RandomIRBuilder.cpp.

References BB, I, isCompatibleReplacement(), llvm::User::setOperand(), and llvm::cl::Sink.

Referenced by llvm::InjectorIRStrategy::mutate().

findOrCreateSource() [1/2]

Value * RandomIRBuilder::findOrCreateSource	(	BasicBlock &	BB,
		ArrayRef< Instruction * >	Insts
	)

Find a "source" for some operation, which will be used in one of the operation's operands.

This either selects an instruction in Insts or returns some new arbitrary Value.

Definition at line 21 of file RandomIRBuilder.cpp.

References llvm::fuzzerop::anyType(), and BB.

Referenced by llvm::InjectorIRStrategy::mutate().

findOrCreateSource() [2/2]

Value * RandomIRBuilder::findOrCreateSource	(	BasicBlock &	BB,
		ArrayRef< Instruction * >	Insts,
		ArrayRef< Value * >	Srcs,
		fuzzerop::SourcePred	Pred
	)

Find a "source" for some operation, which will be used in one of the operation's operands.

This either selects an instruction in Insts that matches Pred, or returns some new Value that matches Pred. The values in Srcs should be source operands that have already been selected.

Definition at line 26 of file RandomIRBuilder.cpp.

References BB, llvm::make_filter_range(), llvm::makeSampler(), and llvm::fuzzerop::SourcePred::matches().

findPointer()

Value * RandomIRBuilder::findPointer	(	BasicBlock &	BB,
		ArrayRef< Instruction * >	Insts,
		ArrayRef< Value * >	Srcs,
		fuzzerop::SourcePred	Pred
	)

Definition at line 136 of file RandomIRBuilder.cpp.

References llvm::UndefValue::get(), llvm::Type::getNonOpaquePointerElementType(), llvm::Type::isFirstClassType(), llvm::Type::isSized(), llvm::make_filter_range(), llvm::makeSampler(), and llvm::fuzzerop::SourcePred::matches().

newSink()

void RandomIRBuilder::newSink	(	BasicBlock &	BB,
		ArrayRef< Instruction * >	Insts,
		Value *	V
	)

Create a user for V in BB.

Definition at line 123 of file RandomIRBuilder.cpp.

References llvm::ArrayRef< T >::back(), BB, llvm::PointerType::get(), llvm::UndefValue::get(), llvm::Value::getType(), llvm::fuzzerop::matchFirstType(), and llvm::uniform().

newSource()

Value * RandomIRBuilder::newSource	(	BasicBlock &	BB,
		ArrayRef< Instruction * >	Insts,
		ArrayRef< Value * >	Srcs,
		fuzzerop::SourcePred	Pred
	)

Create some Value suitable as a source for some operation.

Definition at line 41 of file RandomIRBuilder.cpp.

References assert(), BB, llvm::fuzzerop::SourcePred::generate(), llvm::Type::getNonOpaquePointerElementType(), llvm::Value::getType(), I, llvm::Type::isOpaquePointerTy(), and llvm::fuzzerop::SourcePred::matches().

Referenced by llvm::InstDeleterIRStrategy::mutate().

Member Data Documentation

KnownTypes

SmallVector<Type *, 16> llvm::RandomIRBuilder::KnownTypes

Definition at line 34 of file RandomIRBuilder.h.

Rand

RandomEngine llvm::RandomIRBuilder::Rand

Definition at line 33 of file RandomIRBuilder.h.

Referenced by llvm::IRMutationStrategy::mutate(), llvm::InjectorIRStrategy::mutate(), llvm::InstDeleterIRStrategy::mutate(), llvm::InstModificationIRStrategy::mutate(), and llvm::IRMutator::mutateModule().

---

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

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