CGObjCMac.cpp File Reference

#include "CGBlocks.h"
#include "CGCleanup.h"
#include "CGObjCRuntime.h"
#include "CGRecordLayout.h"
#include "CodeGenFunction.h"
#include "CodeGenModule.h"
#include "clang/AST/ASTContext.h"
#include "clang/AST/Attr.h"
#include "clang/AST/Decl.h"
#include "clang/AST/DeclObjC.h"
#include "clang/AST/Mangle.h"
#include "clang/AST/RecordLayout.h"
#include "clang/AST/StmtObjC.h"
#include "clang/Basic/CodeGenOptions.h"
#include "clang/Basic/LangOptions.h"
#include "clang/CodeGen/ConstantInitBuilder.h"
#include "llvm/ADT/CachedHashString.h"
#include "llvm/ADT/DenseSet.h"
#include "llvm/ADT/SetVector.h"
#include "llvm/ADT/SmallPtrSet.h"
#include "llvm/ADT/SmallString.h"
#include "llvm/IR/DataLayout.h"
#include "llvm/IR/InlineAsm.h"
#include "llvm/IR/IntrinsicInst.h"
#include "llvm/IR/LLVMContext.h"
#include "llvm/IR/Module.h"
#include "llvm/Support/ScopedPrinter.h"
#include "llvm/Support/raw_ostream.h"
#include <cstdio>

Go to the source code of this file.

Enumerations
enum	{ kCFTaggedObjectID_Integer = (1 << 1) + 1 }
enum	FragileClassFlags {   FragileABI_Class_Factory = 0x00001 , FragileABI_Class_Meta = 0x00002 , FragileABI_Class_HasCXXStructors = 0x02000 , FragileABI_Class_Hidden = 0x20000 ,   FragileABI_Class_CompiledByARC = 0x04000000 , FragileABI_Class_HasMRCWeakIvars = 0x08000000 }
enum	NonFragileClassFlags {   NonFragileABI_Class_Meta = 0x00001 , NonFragileABI_Class_Root = 0x00002 , NonFragileABI_Class_HasCXXStructors = 0x00004 , NonFragileABI_Class_Hidden = 0x00010 ,   NonFragileABI_Class_Exception = 0x00020 , NonFragileABI_Class_HasIvarReleaser = 0x00040 , NonFragileABI_Class_CompiledByARC = 0x00080 , NonFragileABI_Class_HasCXXDestructorOnly = 0x00100 ,   NonFragileABI_Class_HasMRCWeakIvars = 0x00200 }
enum	ImageInfoFlags {   eImageInfo_FixAndContinue = (1 << 0) , eImageInfo_GarbageCollected = (1 << 1) , eImageInfo_GCOnly = (1 << 2) , eImageInfo_OptimizedByDyld = (1 << 3) ,   eImageInfo_CorrectedSynthesize = (1 << 4) , eImageInfo_ImageIsSimulated = (1 << 5) , eImageInfo_ClassProperties = (1 << 6) }
	EmitImageInfo - Emit the image info marker used to encode some module level information. More...

Functions
static llvm::Constant *	getConstantGEP (llvm::LLVMContext &VMContext, llvm::GlobalVariable *C, unsigned idx0, unsigned idx1)
	getConstantGEP() - Help routine to construct simple GEPs.
static bool	hasObjCExceptionAttribute (ASTContext &Context, const ObjCInterfaceDecl *OID)
	hasObjCExceptionAttribute - Return true if this class or any super class has the objc_exception attribute.
static llvm::GlobalValue::LinkageTypes	getLinkageTypeForObjCMetadata (CodeGenModule &CGM, StringRef Section)
static llvm::GlobalVariable *	finishAndCreateGlobal (ConstantInitBuilder::StructBuilder &Builder, const llvm::Twine &Name, CodeGenModule &CGM)
	A helper function to create an internal or private global variable.
static llvm::StringMapEntry< llvm::GlobalVariable * > &	GetConstantStringEntry (llvm::StringMap< llvm::GlobalVariable * > &Map, const StringLiteral *Literal, unsigned &StringLength)
static Qualifiers::GC	GetGCAttrTypeForType (ASTContext &Ctx, QualType FQT, bool pointee=false)
static std::string	getBlockLayoutInfoString (const SmallVectorImpl< CGObjCCommonMac::RUN_SKIP > &RunSkipBlockVars, bool HasCopyDisposeHelpers)
static void	PushProtocolProperties (llvm::SmallPtrSet< const IdentifierInfo *, 16 > &PropertySet, SmallVectorImpl< const ObjCPropertyDecl * > &Properties, const ObjCProtocolDecl *Proto, bool IsClassProperty)
static bool	hasWeakMember (QualType type)
static bool	hasMRCWeakIvars (CodeGenModule &CGM, const ObjCImplementationDecl *ID)
	For compatibility, we only want to set the "HasMRCWeakIvars" flag (and actually fill in a layout string) if we really do have any __weak ivars.
static void	addIfPresent (llvm::DenseSet< llvm::Value * > &S, Address V)
static llvm::GlobalValue::DLLStorageClassTypes	getStorage (CodeGenModule &CGM, StringRef Name)

Variables
static const int	ModuleVersion = 7

Enumeration Type Documentation

anonymous enum

anonymous enum

Enumerator
kCFTaggedObjectID_Integer

Definition at line 2044 of file CGObjCMac.cpp.

FragileClassFlags

enum FragileClassFlags

Enumerator
FragileABI_Class_Factory	Apparently: is not a meta-class.
FragileABI_Class_Meta	Is a meta-class.
FragileABI_Class_HasCXXStructors	Has a non-trivial constructor or destructor.
FragileABI_Class_Hidden	Has hidden visibility.
FragileABI_Class_CompiledByARC	Class implementation was compiled under ARC.
FragileABI_Class_HasMRCWeakIvars	Class implementation was compiled under MRC and has MRC weak ivars. Exclusive with CompiledByARC.

Definition at line 3399 of file CGObjCMac.cpp.

ImageInfoFlags

enum ImageInfoFlags

EmitImageInfo - Emit the image info marker used to encode some module level information.

See: <rdr://4810609&4810587&4810587> struct IMAGE_INFO { unsigned version; unsigned flags; };

Enumerator
eImageInfo_FixAndContinue
eImageInfo_GarbageCollected
eImageInfo_GCOnly
eImageInfo_OptimizedByDyld
eImageInfo_CorrectedSynthesize
eImageInfo_ImageIsSimulated
eImageInfo_ClassProperties

Definition at line 5072 of file CGObjCMac.cpp.

NonFragileClassFlags

enum NonFragileClassFlags

Enumerator
NonFragileABI_Class_Meta	Is a meta-class.
NonFragileABI_Class_Root	Is a root class.
NonFragileABI_Class_HasCXXStructors	Has a non-trivial constructor or destructor.
NonFragileABI_Class_Hidden	Has hidden visibility.
NonFragileABI_Class_Exception	Has the exception attribute.
NonFragileABI_Class_HasIvarReleaser	(Obsolete) ARC-specific: this class has a .release_ivars method
NonFragileABI_Class_CompiledByARC	Class implementation was compiled under ARC.
NonFragileABI_Class_HasCXXDestructorOnly	Class has non-trivial destructors, but zero-initialization is okay.
NonFragileABI_Class_HasMRCWeakIvars	Class implementation was compiled under MRC and has MRC weak ivars. Exclusive with CompiledByARC.

Definition at line 3420 of file CGObjCMac.cpp.

Function Documentation

addIfPresent()

static void addIfPresent ( llvm::DenseSet< llvm::Value * > &  S, Address  V  )

static

Definition at line 4423 of file CGObjCMac.cpp.

References V.

finishAndCreateGlobal()

static llvm::GlobalVariable * finishAndCreateGlobal ( ConstantInitBuilder::StructBuilder &  Builder, const llvm::Twine &  Name, CodeGenModule &  CGM  )

static

A helper function to create an internal or private global variable.

Definition at line 1865 of file CGObjCMac.cpp.

References getLinkageTypeForObjCMetadata(), clang::CodeGen::CodeGenTypeCache::getPointerAlign(), and clang::CodeGen::CodeGenModule::getTriple().

getBlockLayoutInfoString()

static std::string getBlockLayoutInfoString ( const SmallVectorImpl< CGObjCCommonMac::RUN_SKIP > &  RunSkipBlockVars, bool  HasCopyDisposeHelpers  )

static

Definition at line 2843 of file CGObjCMac.cpp.

getConstantGEP()

static llvm::Constant * getConstantGEP ( llvm::LLVMContext &  VMContext, llvm::GlobalVariable *  C, unsigned  idx0, unsigned  idx1  )

static

getConstantGEP() - Help routine to construct simple GEPs.

Definition at line 1834 of file CGObjCMac.cpp.

References clang::C.

GetConstantStringEntry()

static llvm::StringMapEntry< llvm::GlobalVariable * > & GetConstantStringEntry ( llvm::StringMap< llvm::GlobalVariable * > &  Map, const StringLiteral *  Literal, unsigned &  StringLength  )

static

Definition at line 1948 of file CGObjCMac.cpp.

GetGCAttrTypeForType()

static Qualifiers::GC GetGCAttrTypeForType ( ASTContext &  Ctx, QualType  FQT, bool  pointee = false  )

static

Definition at line 2230 of file CGObjCMac.cpp.

References clang::Qualifiers::GCNone, clang::Type::getAs(), GetGCAttrTypeForType(), clang::ASTContext::getLangOpts(), clang::QualType::getObjCLifetime(), clang::Type::isBlockPointerType(), clang::QualType::isObjCGCStrong(), clang::QualType::isObjCGCWeak(), clang::Type::isObjCObjectPointerType(), clang::Qualifiers::OCL_Autoreleasing, clang::Qualifiers::OCL_ExplicitNone, clang::Qualifiers::OCL_None, clang::Qualifiers::OCL_Strong, clang::Qualifiers::OCL_Weak, clang::Qualifiers::Strong, and clang::Qualifiers::Weak.

Referenced by GetGCAttrTypeForType().

getLinkageTypeForObjCMetadata()

static llvm::GlobalValue::LinkageTypes getLinkageTypeForObjCMetadata ( CodeGenModule &  CGM, StringRef  Section  )

static

Definition at line 1856 of file CGObjCMac.cpp.

References clang::CodeGen::CodeGenModule::getTriple().

Referenced by finishAndCreateGlobal().

getStorage()

static llvm::GlobalValue::DLLStorageClassTypes getStorage ( CodeGenModule &  CGM, StringRef  Name  )

static

Definition at line 6430 of file CGObjCMac.cpp.

Referenced by clang::OverloadedTemplateStorage::begin(), and clang::OverloadedTemplateStorage::end().

hasMRCWeakIvars()

static bool hasMRCWeakIvars ( CodeGenModule &  CGM, const ObjCImplementationDecl *  ID  )

static

For compatibility, we only want to set the "HasMRCWeakIvars" flag (and actually fill in a layout string) if we really do have any __weak ivars.

Definition at line 3468 of file CGObjCMac.cpp.

References clang::CodeGen::CodeGenModule::getLangOpts(), and hasWeakMember().

hasObjCExceptionAttribute()

static bool hasObjCExceptionAttribute ( ASTContext &  Context, const ObjCInterfaceDecl *  OID  )

static

hasObjCExceptionAttribute - Return true if this class or any super class has the objc_exception attribute.

Definition at line 1846 of file CGObjCMac.cpp.

References clang::ObjCInterfaceDecl::getSuperClass(), clang::Decl::hasAttr(), and hasObjCExceptionAttribute().

Referenced by hasObjCExceptionAttribute().

hasWeakMember()

static bool hasWeakMember ( QualType  type )

static

Definition at line 3450 of file CGObjCMac.cpp.

References hasWeakMember(), clang::Qualifiers::OCL_Weak, and clang::ast_matchers::type.

Referenced by hasMRCWeakIvars(), and hasWeakMember().

PushProtocolProperties()

static void PushProtocolProperties ( llvm::SmallPtrSet< const IdentifierInfo *, 16 > &  PropertySet, SmallVectorImpl< const ObjCPropertyDecl * > &  Properties, const ObjCProtocolDecl *  Proto, bool  IsClassProperty  )

static

Definition at line 3192 of file CGObjCMac.cpp.

References clang::NamedDecl::getIdentifier(), P, clang::ObjCContainerDecl::properties(), clang::ObjCProtocolDecl::protocols(), and PushProtocolProperties().

Referenced by PushProtocolProperties().

Variable Documentation

ModuleVersion

const int ModuleVersion = 7

static

Definition at line 5150 of file CGObjCMac.cpp.