ObjCARCAliasAnalysis.cpp File Reference

This file defines a simple ARC-aware AliasAnalysis using special knowledge of Objective C to enhance other optimization passes which rely on the Alias Analysis infrastructure. More...

#include "llvm/Analysis/ObjCARCAliasAnalysis.h"
#include "llvm/Analysis/ObjCARCAnalysisUtils.h"
#include "llvm/IR/Function.h"
#include "llvm/IR/Instruction.h"
#include "llvm/IR/Value.h"
#include "llvm/InitializePasses.h"
#include "llvm/PassAnalysisSupport.h"
#include "llvm/PassSupport.h"

Include dependency graph for ObjCARCAliasAnalysis.cpp:

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Macros
#define	DEBUG_TYPE   "objc-arc-aa"

Functions
	INITIALIZE_PASS (ObjCARCAAWrapperPass, "objc-arc-aa", "ObjC-ARC-Based Alias Analysis", false, true) ImmutablePass *llvm

Detailed Description

This file defines a simple ARC-aware AliasAnalysis using special knowledge of Objective C to enhance other optimization passes which rely on the Alias Analysis infrastructure.

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.

TODO: Theoretically we could check for dependencies between objc_* calls and FMRB_OnlyAccessesArgumentPointees calls or other well-behaved calls.

Definition in file ObjCARCAliasAnalysis.cpp.

Macro Definition Documentation

DEBUG_TYPE

#define DEBUG_TYPE   "objc-arc-aa"

Definition at line 35 of file ObjCARCAliasAnalysis.cpp.

Function Documentation

INITIALIZE_PASS()

INITIALIZE_PASS	(	ObjCARCAAWrapperPass	,
		"objc-arc-aa"	,
		"ObjC-ARC-Based Alias Analysis"	,
		false	,
		true
	)

Definition at line 139 of file ObjCARCAliasAnalysis.cpp.