CaptureTracking.cpp File Reference

#include "llvm/Analysis/CaptureTracking.h"
#include "llvm/ADT/SmallSet.h"
#include "llvm/ADT/SmallVector.h"
#include "llvm/ADT/Statistic.h"
#include "llvm/Analysis/AliasAnalysis.h"
#include "llvm/Analysis/CFG.h"
#include "llvm/Analysis/ValueTracking.h"
#include "llvm/IR/Constants.h"
#include "llvm/IR/Dominators.h"
#include "llvm/IR/Instructions.h"
#include "llvm/IR/IntrinsicInst.h"
#include "llvm/Support/CommandLine.h"

Go to the source code of this file.

Macros
#define	DEBUG_TYPE   "capture-tracking"

Functions
	STATISTIC (NumCaptured, "Number of pointers maybe captured")
	STATISTIC (NumNotCaptured, "Number of pointers not captured")
	STATISTIC (NumCapturedBefore, "Number of pointers maybe captured before")
	STATISTIC (NumNotCapturedBefore, "Number of pointers not captured before")

Variables
static cl::opt< unsigned >	DefaultMaxUsesToExplore ("capture-tracking-max-uses-to-explore", cl::Hidden, cl::desc("Maximal number of uses to explore."), cl::init(100))
	The default value for MaxUsesToExplore argument.

Macro Definition Documentation

DEBUG_TYPE

#define DEBUG_TYPE   "capture-tracking"

Definition at line 33 of file CaptureTracking.cpp.

Function Documentation

STATISTIC() [1/4]

STATISTIC	(	NumCaptured	,
		"Number of pointers maybe captured"
	)

STATISTIC() [2/4]

STATISTIC	(	NumCapturedBefore	,
		"Number of pointers maybe captured before"
	)

STATISTIC() [3/4]

STATISTIC	(	NumNotCaptured	,
		"Number of pointers not captured"
	)

STATISTIC() [4/4]

STATISTIC	(	NumNotCapturedBefore	,
		"Number of pointers not captured before"
	)

Variable Documentation

DefaultMaxUsesToExplore

cl::opt< unsigned > DefaultMaxUsesToExplore("capture-tracking-max-uses-to-explore", cl::Hidden, cl::desc("Maximal number of uses to explore."), cl::init(100)) ( "capture-tracking-max-uses-to-explore"  , cl::Hidden  , cl::desc("Maximal number of uses to explore.")  , cl::init(100)    )

static

The default value for MaxUsesToExplore argument.

It's relatively small to keep the cost of analysis reasonable for clients like BasicAliasAnalysis, where the results can't be cached. TODO: we should probably introduce a caching CaptureTracking analysis and use it where possible. The caching version can use much higher limit or don't have this cap at all.

Referenced by llvm::getDefaultMaxUsesToExploreForCaptureTracking(), and llvm::PointerMayBeCaptured().