ObjCARCExpand.cpp File Reference

This file defines ObjC ARC optimizations. More...

#include "ObjCARC.h"
#include "llvm/IR/Function.h"
#include "llvm/IR/InstIterator.h"
#include "llvm/IR/Instruction.h"
#include "llvm/IR/Instructions.h"
#include "llvm/IR/Value.h"
#include "llvm/Pass.h"
#include "llvm/PassAnalysisSupport.h"
#include "llvm/PassRegistry.h"
#include "llvm/PassSupport.h"
#include "llvm/Support/Casting.h"
#include "llvm/Support/Debug.h"
#include "llvm/Support/raw_ostream.h"

Include dependency graph for ObjCARCExpand.cpp:

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Namespaces
	llvm
	This class represents lattice values for constants.

Macros
#define	DEBUG_TYPE   "objc-arc-expand"

Functions
	INITIALIZE_PASS (ObjCARCExpand, "objc-arc-expand", "ObjC ARC expansion", false, false) Pass *llvm

Detailed Description

This file defines 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 deals with early optimizations which perform certain cleanup operations.

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 ObjCARCExpand.cpp.

Macro Definition Documentation

DEBUG_TYPE

#define DEBUG_TYPE   "objc-arc-expand"

Definition at line 40 of file ObjCARCExpand.cpp.

Function Documentation

INITIALIZE_PASS()

INITIALIZE_PASS	(	ObjCARCExpand	,
		"objc-arc-expand"	,
		"ObjC ARC expansion"	,
		false	,
		false
	)

Definition at line 68 of file ObjCARCExpand.cpp.

References llvm::objcarc::Autorelease, llvm::objcarc::AutoreleaseRV, llvm::dbgs(), E, llvm::objcarc::EnableARCOpts, F(), llvm::objcarc::FusedRetainAutorelease, llvm::objcarc::FusedRetainAutoreleaseRV, llvm::objcarc::GetBasicARCInstKind(), llvm::Value::getName(), I, llvm::inst_begin(), llvm::inst_end(), LLVM_DEBUG, llvm::objcarc::ModuleHasARC(), llvm::Value::replaceAllUsesWith(), llvm::objcarc::Retain, llvm::objcarc::RetainRV, runOnFunction(), and llvm::AnalysisUsage::setPreservesCFG().