IRMutator.cpp File Reference

#include "llvm/FuzzMutate/IRMutator.h"
#include "llvm/ADT/STLExtras.h"
#include "llvm/ADT/SmallSet.h"
#include "llvm/Analysis/TargetLibraryInfo.h"
#include "llvm/Bitcode/BitcodeReader.h"
#include "llvm/Bitcode/BitcodeWriter.h"
#include "llvm/FuzzMutate/Operations.h"
#include "llvm/FuzzMutate/Random.h"
#include "llvm/FuzzMutate/RandomIRBuilder.h"
#include "llvm/IR/BasicBlock.h"
#include "llvm/IR/FMF.h"
#include "llvm/IR/Function.h"
#include "llvm/IR/InstIterator.h"
#include "llvm/IR/Instructions.h"
#include "llvm/IR/IntrinsicInst.h"
#include "llvm/IR/IntrinsicsAMDGPU.h"
#include "llvm/IR/Module.h"
#include "llvm/IR/Operator.h"
#include "llvm/IR/PassInstrumentation.h"
#include "llvm/IR/Verifier.h"
#include "llvm/Support/MemoryBuffer.h"
#include "llvm/Support/SourceMgr.h"
#include "llvm/Transforms/Scalar/DCE.h"
#include "llvm/Transforms/Utils/BasicBlockUtils.h"
#include <map>
#include <optional>

Go to the source code of this file.

Functions
static void	eliminateDeadCode (Function &F)
static Instruction *	getEffectiveTerminator (BasicBlock &BB)
static BasicBlock::iterator	getEndIterator (BasicBlock &BB)
static iterator_range< BasicBlock::iterator >	getInsertionRange (BasicBlock &BB)
static uint64_t	getUniqueCaseValue (SmallSet< uint64_t, 4 > &CasesTaken, uint64_t MaxValue, RandomIRBuilder &IB)
	Return a case value that is not already taken to make sure we don't have two cases with same value.
static bool	isUnsupportedFunction (Function *F)
	Determines whether a function is unsupported by the current mutator's implementation.

Function Documentation

eliminateDeadCode()

void eliminateDeadCode ( Function & F )

static

Definition at line 84 of file IRMutator.cpp.

References llvm::PassManager< IRUnitT, AnalysisManagerT, ExtraArgTs >::addPass(), F, FAM, and llvm::PassManager< IRUnitT, AnalysisManagerT, ExtraArgTs >::run().

Referenced by llvm::InjectorIRStrategy::mutate(), llvm::InstDeleterIRStrategy::mutate(), and llvm::DCEPass::run().

getEffectiveTerminator()

Instruction * getEffectiveTerminator ( BasicBlock & BB )

inlinestatic

Definition at line 120 of file IRMutator.cpp.

References llvm::dyn_cast(), llvm::BasicBlock::getTerminatingMustTailCall(), llvm::BasicBlock::getTerminator(), I, and II.

Referenced by getEndIterator(), and llvm::ShuffleBlockStrategy::mutate().

getEndIterator()

BasicBlock::iterator getEndIterator ( BasicBlock & BB )

inlinestatic

Definition at line 136 of file IRMutator.cpp.

References llvm::BasicBlock::empty(), llvm::BasicBlock::end(), getEffectiveTerminator(), and llvm::BasicBlock::getTerminator().

Referenced by getInsertionRange().

getInsertionRange()

iterator_range< BasicBlock::iterator > getInsertionRange ( BasicBlock & BB )

inlinestatic

Definition at line 153 of file IRMutator.cpp.

References getEndIterator(), llvm::BasicBlock::getFirstInsertionPt(), and llvm::make_range().

Referenced by llvm::InjectorIRStrategy::mutate(), llvm::InsertCFGStrategy::mutate(), llvm::InsertFunctionStrategy::mutate(), llvm::InsertPHIStrategy::mutate(), and llvm::SinkInstructionStrategy::mutate().

getUniqueCaseValue()

uint64_t getUniqueCaseValue ( SmallSet< uint64_t, 4 > & CasesTaken, uint64_t MaxValue, RandomIRBuilder & IB )

static

Return a case value that is not already taken to make sure we don't have two cases with same value.

Definition at line 383 of file IRMutator.cpp.

References llvm::SmallSet< T, N, C >::count(), llvm::SmallSet< T, N, C >::insert(), and llvm::uniform().

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

isUnsupportedFunction()

bool isUnsupportedFunction ( Function * F )

static

Determines whether a function is unsupported by the current mutator's implementation.

The function returns true if any of the following criteria are met:

• The function accepts metadata or token types as arguments.
• The function has ABI attributes that could cause UB.
• The function uses a non-callable CC that may result in UB.

Definition at line 399 of file IRMutator.cpp.

References A(), llvm::any_of(), F, llvm::isCallableCC(), and T.

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