ThreadSanitizer.cpp File Reference

#include "llvm/Transforms/Instrumentation/ThreadSanitizer.h"
#include "llvm/ADT/DenseMap.h"
#include "llvm/ADT/SmallString.h"
#include "llvm/ADT/SmallVector.h"
#include "llvm/ADT/Statistic.h"
#include "llvm/ADT/StringExtras.h"
#include "llvm/Analysis/CaptureTracking.h"
#include "llvm/Analysis/TargetLibraryInfo.h"
#include "llvm/Analysis/ValueTracking.h"
#include "llvm/IR/DataLayout.h"
#include "llvm/IR/Function.h"
#include "llvm/IR/IRBuilder.h"
#include "llvm/IR/Instructions.h"
#include "llvm/IR/IntrinsicInst.h"
#include "llvm/IR/Intrinsics.h"
#include "llvm/IR/LLVMContext.h"
#include "llvm/IR/Metadata.h"
#include "llvm/IR/Module.h"
#include "llvm/IR/Type.h"
#include "llvm/ProfileData/InstrProf.h"
#include "llvm/Support/CommandLine.h"
#include "llvm/Support/Debug.h"
#include "llvm/Support/raw_ostream.h"
#include "llvm/Transforms/Utils/EscapeEnumerator.h"
#include "llvm/Transforms/Utils/Instrumentation.h"
#include "llvm/Transforms/Utils/Local.h"
#include "llvm/Transforms/Utils/ModuleUtils.h"

Go to the source code of this file.

Macros
#define	DEBUG_TYPE   "tsan"

Functions
	STATISTIC (NumInstrumentedReads, "Number of instrumented reads")
	STATISTIC (NumInstrumentedWrites, "Number of instrumented writes")
	STATISTIC (NumOmittedReadsBeforeWrite, "Number of reads ignored due to following writes")
	STATISTIC (NumAccessesWithBadSize, "Number of accesses with bad size")
	STATISTIC (NumInstrumentedVtableWrites, "Number of vtable ptr writes")
	STATISTIC (NumInstrumentedVtableReads, "Number of vtable ptr reads")
	STATISTIC (NumOmittedReadsFromConstantGlobals, "Number of reads from constant globals")
	STATISTIC (NumOmittedReadsFromVtable, "Number of vtable reads")
	STATISTIC (NumOmittedNonCaptured, "Number of accesses ignored due to capturing")
static bool	isVtableAccess (Instruction *I)
static bool	shouldInstrumentReadWriteFromAddress (const Module *M, Value *Addr)
static bool	isTsanAtomic (const Instruction *I)
static ConstantInt *	createOrdering (IRBuilder<> *IRB, AtomicOrdering ord)

Variables
static cl::opt< bool >	ClInstrumentMemoryAccesses ("tsan-instrument-memory-accesses", cl::init(true), cl::desc("Instrument memory accesses"), cl::Hidden)
static cl::opt< bool >	ClInstrumentFuncEntryExit ("tsan-instrument-func-entry-exit", cl::init(true), cl::desc("Instrument function entry and exit"), cl::Hidden)
static cl::opt< bool >	ClHandleCxxExceptions ("tsan-handle-cxx-exceptions", cl::init(true), cl::desc("Handle C++ exceptions (insert cleanup blocks for unwinding)"), cl::Hidden)
static cl::opt< bool >	ClInstrumentAtomics ("tsan-instrument-atomics", cl::init(true), cl::desc("Instrument atomics"), cl::Hidden)
static cl::opt< bool >	ClInstrumentMemIntrinsics ("tsan-instrument-memintrinsics", cl::init(true), cl::desc("Instrument memintrinsics (memset/memcpy/memmove)"), cl::Hidden)
static cl::opt< bool >	ClDistinguishVolatile ("tsan-distinguish-volatile", cl::init(false), cl::desc("Emit special instrumentation for accesses to volatiles"), cl::Hidden)
static cl::opt< bool >	ClInstrumentReadBeforeWrite ("tsan-instrument-read-before-write", cl::init(false), cl::desc("Do not eliminate read instrumentation for read-before-writes"), cl::Hidden)
static cl::opt< bool >	ClCompoundReadBeforeWrite ("tsan-compound-read-before-write", cl::init(false), cl::desc("Emit special compound instrumentation for reads-before-writes"), cl::Hidden)
static cl::opt< bool >	ClOmitNonCaptured ("tsan-omit-by-pointer-capturing", cl::init(true), cl::desc("Omit accesses due to pointer capturing"), cl::Hidden)
const char	kTsanModuleCtorName [] = "tsan.module_ctor"
const char	kTsanInitName [] = "__tsan_init"

Macro Definition Documentation

DEBUG_TYPE

#define DEBUG_TYPE   "tsan"

Definition at line 51 of file ThreadSanitizer.cpp.

Function Documentation

createOrdering()

static ConstantInt * createOrdering ( IRBuilder<> *  IRB, AtomicOrdering  ord  )

static

Definition at line 668 of file ThreadSanitizer.cpp.

References llvm::Acquire, llvm::AcquireRelease, llvm::IRBuilderBase::getInt32(), llvm_unreachable, llvm::Monotonic, llvm::NotAtomic, llvm::Release, llvm::SequentiallyConsistent, and llvm::Unordered.

isTsanAtomic()

static bool isTsanAtomic ( const Instruction *  I )

static

Definition at line 477 of file ThreadSanitizer.cpp.

References llvm::getAtomicSyncScopeID(), I, and llvm::SyncScope::SingleThread.

isVtableAccess()

static bool isVtableAccess ( Instruction *  I )

static

Definition at line 351 of file ThreadSanitizer.cpp.

References I, and llvm::Tag.

shouldInstrumentReadWriteFromAddress()

static bool shouldInstrumentReadWriteFromAddress ( const Module *  M, Value *  Addr  )

static

Definition at line 359 of file ThreadSanitizer.cpp.

References Addr, llvm::getInstrProfSectionName(), and llvm::Type::getPointerAddressSpace().

STATISTIC() [1/9]

STATISTIC	(	NumAccessesWithBadSize	,
		"Number of accesses with bad size"
	)

STATISTIC() [2/9]

STATISTIC	(	NumInstrumentedReads	,
		"Number of instrumented reads"
	)

STATISTIC() [3/9]

STATISTIC	(	NumInstrumentedVtableReads	,
		"Number of vtable ptr reads"
	)

STATISTIC() [4/9]

STATISTIC	(	NumInstrumentedVtableWrites	,
		"Number of vtable ptr writes"
	)

STATISTIC() [5/9]

STATISTIC	(	NumInstrumentedWrites	,
		"Number of instrumented writes"
	)

STATISTIC() [6/9]

STATISTIC	(	NumOmittedNonCaptured	,
		"Number of accesses ignored due to capturing"
	)

STATISTIC() [7/9]

STATISTIC	(	NumOmittedReadsBeforeWrite	,
		"Number of reads ignored due to following writes"
	)

STATISTIC() [8/9]

STATISTIC	(	NumOmittedReadsFromConstantGlobals	,
		"Number of reads from constant globals"
	)

STATISTIC() [9/9]

STATISTIC	(	NumOmittedReadsFromVtable	,
		"Number of vtable reads"
	)

Variable Documentation

ClCompoundReadBeforeWrite

cl::opt< bool > ClCompoundReadBeforeWrite("tsan-compound-read-before-write", cl::init(false), cl::desc("Emit special compound instrumentation for reads-before-writes"), cl::Hidden) ( "tsan-compound-read-before-write"  , cl::init(false)  , cl::desc("Emit special compound instrumentation for reads-before-writes")  , cl::Hidden    )

static

ClDistinguishVolatile

cl::opt< bool > ClDistinguishVolatile("tsan-distinguish-volatile", cl::init(false), cl::desc("Emit special instrumentation for accesses to volatiles"), cl::Hidden) ( "tsan-distinguish-volatile"  , cl::init(false)  , cl::desc("Emit special instrumentation for accesses to volatiles")  , cl::Hidden    )

static

ClHandleCxxExceptions

cl::opt< bool > ClHandleCxxExceptions("tsan-handle-cxx-exceptions", cl::init(true), cl::desc("Handle C++ exceptions (insert cleanup blocks for unwinding)"), cl::Hidden) ( "tsan-handle-cxx-exceptions"  , cl::init(true)  , cl::desc("Handle C++ exceptions (insert cleanup blocks for unwinding)")  , cl::Hidden    )

static

ClInstrumentAtomics

cl::opt< bool > ClInstrumentAtomics("tsan-instrument-atomics", cl::init(true), cl::desc("Instrument atomics"), cl::Hidden) ( "tsan-instrument-atomics"  , cl::init(true)  , cl::desc("Instrument atomics")  , cl::Hidden    )

static

ClInstrumentFuncEntryExit

cl::opt< bool > ClInstrumentFuncEntryExit("tsan-instrument-func-entry-exit", cl::init(true), cl::desc("Instrument function entry and exit"), cl::Hidden) ( "tsan-instrument-func-entry-exit"  , cl::init(true)  , cl::desc("Instrument function entry and exit")  , cl::Hidden    )

static

ClInstrumentMemIntrinsics

cl::opt< bool > ClInstrumentMemIntrinsics("tsan-instrument-memintrinsics", cl::init(true), cl::desc("Instrument memintrinsics (memset/memcpy/memmove)"), cl::Hidden) ( "tsan-instrument-memintrinsics"  , cl::init(true)  , cl::desc("Instrument memintrinsics (memset/memcpy/memmove)")  , cl::Hidden    )

static

ClInstrumentMemoryAccesses

cl::opt< bool > ClInstrumentMemoryAccesses("tsan-instrument-memory-accesses", cl::init(true), cl::desc("Instrument memory accesses"), cl::Hidden) ( "tsan-instrument-memory-accesses"  , cl::init(true)  , cl::desc("Instrument memory accesses")  , cl::Hidden    )

static

ClInstrumentReadBeforeWrite

cl::opt< bool > ClInstrumentReadBeforeWrite("tsan-instrument-read-before-write", cl::init(false), cl::desc("Do not eliminate read instrumentation for read-before-writes"), cl::Hidden) ( "tsan-instrument-read-before-write"  , cl::init(false)  , cl::desc("Do not eliminate read instrumentation for read-before-writes")  , cl::Hidden    )

static

ClOmitNonCaptured

cl::opt< bool > ClOmitNonCaptured("tsan-omit-by-pointer-capturing", cl::init(true), cl::desc("Omit accesses due to pointer capturing"), cl::Hidden) ( "tsan-omit-by-pointer-capturing"  , cl::init(true)  , cl::desc("Omit accesses due to pointer capturing")  , cl::Hidden    )

static

kTsanInitName

const char kTsanInitName[] = "__tsan_init"

Definition at line 101 of file ThreadSanitizer.cpp.

kTsanModuleCtorName

const char kTsanModuleCtorName[] = "tsan.module_ctor"

Definition at line 100 of file ThreadSanitizer.cpp.