ObjCARCContract.cpp File Reference

#include "ObjCARC.h"
#include "ARCRuntimeEntryPoints.h"
#include "DependencyAnalysis.h"
#include "ProvenanceAnalysis.h"
#include "llvm/ADT/Statistic.h"
#include "llvm/Analysis/Dominators.h"
#include "llvm/IR/InlineAsm.h"
#include "llvm/IR/Operator.h"
#include "llvm/Support/Debug.h"

Include dependency graph for ObjCARCContract.cpp:

Go to the source code of this file.

Macros
#define	DEBUG_TYPE   "objc-arc-contract"

Functions
	STATISTIC (NumPeeps,"Number of calls peephole-optimized")
	STATISTIC (NumStoreStrongs,"Number objc_storeStrong calls formed")
	INITIALIZE_PASS_BEGIN (ObjCARCContract,"objc-arc-contract","ObjC ARC contraction", false, false) INITIALIZE_PASS_END(ObjCARCContract

Variables
objc arc	contract
objc arc ObjC ARC	contraction
objc arc ObjC ARC	false

Detailed Description

This file defines late ObjC ARC optimizations. ARC stands for Automatic Reference Counting and is a system for managing reference counts for objects in Objective C.

This specific file mainly deals with ``contracting'' multiple lower level operations into singular higher level operations through pattern matching.

WARNING: This file knows about certain library functions. It recognizes them by name, and hardwires knowledge of their semantics.

WARNING: This file knows about how certain Objective-C library functions are used. Naive LLVM IR transformations which would otherwise be behavior-preserving may break these assumptions.

Definition in file ObjCARCContract.cpp.

Macro Definition Documentation

#define DEBUG_TYPE   "objc-arc-contract"

Definition at line 29 of file ObjCARCContract.cpp.

Function Documentation

INITIALIZE_PASS_BEGIN	(	ObjCARCContract	,
		"objc-arc-contract"	,
		"ObjC ARC contraction"	,
		false	,
		false
	)

STATISTIC	(	NumPeeps	,
		"Number of calls peephole-optimized"
	)

STATISTIC	(	NumStoreStrongs	,
		"Number objc_storeStrong calls formed"
	)

Variable Documentation

objc arc contract

Definition at line 100 of file ObjCARCContract.cpp.

objc arc ObjC ARC contraction

Definition at line 100 of file ObjCARCContract.cpp.

objc arc ObjC ARC false

Definition at line 100 of file ObjCARCContract.cpp.