CGObjC.cpp File Reference

#include "CGDebugInfo.h"
#include "CGObjCRuntime.h"
#include "CodeGenFunction.h"
#include "CodeGenModule.h"
#include "CodeGenPGO.h"
#include "ConstantEmitter.h"
#include "TargetInfo.h"
#include "clang/AST/ASTContext.h"
#include "clang/AST/Attr.h"
#include "clang/AST/DeclObjC.h"
#include "clang/AST/StmtObjC.h"
#include "clang/Basic/Diagnostic.h"
#include "clang/CodeGen/CGFunctionInfo.h"
#include "clang/CodeGen/CodeGenABITypes.h"
#include "llvm/Analysis/ObjCARCUtil.h"
#include "llvm/BinaryFormat/MachO.h"
#include "llvm/IR/Constants.h"
#include "llvm/IR/DataLayout.h"
#include "llvm/IR/InlineAsm.h"
#include <optional>

Go to the source code of this file.

Typedefs
typedef llvm::PointerIntPair< llvm::Value *, 1, bool >	TryEmitResult
typedef llvm::function_ref< llvm::Value *(CodeGenFunction &CGF, llvm::Value *value)>	ValueTransform

Functions
static TryEmitResult	tryEmitARCRetainScalarExpr (CodeGenFunction &CGF, const Expr *e)
static RValue	AdjustObjCObjectType (CodeGenFunction &CGF, QualType ExpT, RValue Result)
	Adjust the type of an Objective-C object that doesn't match up due to type erasure at various points, e.g., related result types or the use of parameterized classes.
static llvm::Constant *	getNullForVariable (Address addr)
	Given the address of a variable of pointer type, find the correct null to store into it.
static bool	shouldExtendReceiverForInnerPointerMessage (const ObjCMessageExpr *message)
	Decide whether to extend the lifetime of the receiver of a returns-inner-pointer message.
static const Expr *	findWeakLValue (const Expr *E)
	Given an expression of ObjC pointer type, check whether it was immediately loaded from an ARC __weak l-value.
static std::optional< llvm::Value * >	tryGenerateSpecializedMessageSend (CodeGenFunction &CGF, QualType ResultType, llvm::Value *Receiver, const CallArgList &Args, Selector Sel, const ObjCMethodDecl *method, bool isClassMessage)
	The ObjC runtime may provide entrypoints that are likely to be faster than an ordinary message send of the appropriate selector.
static void	AppendFirstImpliedRuntimeProtocols (const ObjCProtocolDecl *PD, llvm::UniqueVector< const ObjCProtocolDecl * > &PDs)
static std::optional< llvm::Value * >	tryEmitSpecializedAllocInit (CodeGenFunction &CGF, const ObjCMessageExpr *OME)
	Instead of '[[MyClass alloc] init]', try to generate 'objc_alloc_init(MyClass)'.
static llvm::Value *	emitARCRetainLoadOfScalar (CodeGenFunction &CGF, LValue lvalue, QualType type)
static void	emitStructGetterCall (CodeGenFunction &CGF, ObjCIvarDecl *ivar, bool isAtomic, bool hasStrong)
	emitStructGetterCall - Call the runtime function to load a property into the return value slot.
static bool	hasUnalignedAtomics (llvm::Triple::ArchType arch)
	Determine whether the given architecture supports unaligned atomic accesses.
static CharUnits	getMaxAtomicAccessSize (CodeGenModule &CGM, llvm::Triple::ArchType arch)
	Return the maximum size that permits atomic accesses for the given architecture.
static bool	hasTrivialGetExpr (const ObjCPropertyImplDecl *propImpl)
static void	emitCPPObjectAtomicGetterCall (CodeGenFunction &CGF, llvm::Value *returnAddr, ObjCIvarDecl *ivar, llvm::Constant *AtomicHelperFn)
	emitCPPObjectAtomicGetterCall - Call the runtime function to copy the ivar into the resturn slot.
static llvm::Value *	emitCmdValueForGetterSetterBody (CodeGenFunction &CGF, ObjCMethodDecl *MD)
static void	emitStructSetterCall (CodeGenFunction &CGF, ObjCMethodDecl *OMD, ObjCIvarDecl *ivar)
	emitStructSetterCall - Call the runtime function to store the value from the first formal parameter into the given ivar.
static void	emitCPPObjectAtomicSetterCall (CodeGenFunction &CGF, ObjCMethodDecl *OMD, ObjCIvarDecl *ivar, llvm::Constant *AtomicHelperFn)
	emitCPPObjectAtomicSetterCall - Call the runtime function to store the value from the first formal parameter into the given ivar, using the Cpp API for atomic Cpp objects with non-trivial copy assignment.
static bool	hasTrivialSetExpr (const ObjCPropertyImplDecl *PID)
static bool	UseOptimizedSetter (CodeGenModule &CGM)
static void	destroyARCStrongWithStore (CodeGenFunction &CGF, Address addr, QualType type)
	Like CodeGenFunction::destroyARCStrong, but do it with a call.
static void	emitCXXDestructMethod (CodeGenFunction &CGF, ObjCImplementationDecl *impl)
static void	setARCRuntimeFunctionLinkage (CodeGenModule &CGM, llvm::Value *RTF)
static void	setARCRuntimeFunctionLinkage (CodeGenModule &CGM, llvm::FunctionCallee RTF)
static llvm::Function *	getARCIntrinsic (llvm::Intrinsic::ID IntID, CodeGenModule &CGM)
static llvm::Value *	emitARCValueOperation (CodeGenFunction &CGF, llvm::Value *value, llvm::Type *returnType, llvm::Function *&fn, llvm::Intrinsic::ID IntID, llvm::CallInst::TailCallKind tailKind=llvm::CallInst::TCK_None)
	Perform an operation having the signature i8* (i8*) where a null input causes a no-op and returns null.
static llvm::Value *	emitARCLoadOperation (CodeGenFunction &CGF, Address addr, llvm::Function *&fn, llvm::Intrinsic::ID IntID)
	Perform an operation having the following signature: i8* (i8**)
static llvm::Value *	emitARCStoreOperation (CodeGenFunction &CGF, Address addr, llvm::Value *value, llvm::Function *&fn, llvm::Intrinsic::ID IntID, bool ignored)
	Perform an operation having the following signature: i8* (i8**, i8*)
static void	emitARCCopyOperation (CodeGenFunction &CGF, Address dst, Address src, llvm::Function *&fn, llvm::Intrinsic::ID IntID)
	Perform an operation having the following signature: void (i8**, i8**)
static llvm::Value *	emitObjCValueOperation (CodeGenFunction &CGF, llvm::Value *value, llvm::Type *returnType, llvm::FunctionCallee &fn, StringRef fnName)
	Perform an operation having the signature i8* (i8*) where a null input causes a no-op and returns null.
static void	emitAutoreleasedReturnValueMarker (CodeGenFunction &CGF)
static llvm::Value *	emitOptimizedARCReturnCall (llvm::Value *value, bool IsRetainRV, CodeGenFunction &CGF)
static bool	shouldRetainObjCLifetime (Qualifiers::ObjCLifetime lifetime)
static TryEmitResult	tryEmitARCRetainLoadOfScalar (CodeGenFunction &CGF, LValue lvalue, QualType type)
static TryEmitResult	tryEmitARCRetainLoadOfScalar (CodeGenFunction &CGF, const Expr *e)
static llvm::Value *	emitARCOperationAfterCall (CodeGenFunction &CGF, llvm::Value *value, ValueTransform doAfterCall, ValueTransform doFallback)
	Insert code immediately after a call.
static llvm::Value *	emitARCRetainCallResult (CodeGenFunction &CGF, const Expr *e)
	Given that the given expression is some sort of call (which does not return retained), emit a retain following it.
static llvm::Value *	emitARCUnsafeClaimCallResult (CodeGenFunction &CGF, const Expr *e)
	Given that the given expression is some sort of call (which does not return retained), perform an unsafeClaim following it.
static bool	shouldEmitSeparateBlockRetain (const Expr *e)
	Determine whether it might be important to emit a separate objc_retain_block on the result of the given expression, or whether it's okay to just emit it in a +1 context.
static llvm::Value *	emitARCUnsafeUnretainedScalarExpr (CodeGenFunction &CGF, const Expr *e)
static unsigned	getBaseMachOPlatformID (const llvm::Triple &TT)
static llvm::Value *	emitIsPlatformVersionAtLeast (CodeGenFunction &CGF, const VersionTuple &Version)
static bool	isFoundationNeededForDarwinAvailabilityCheck (const llvm::Triple &TT, const VersionTuple &TargetVersion)

Typedef Documentation

TryEmitResult

typedef llvm::PointerIntPair<llvm::Value*,1,bool> TryEmitResult

Definition at line 36 of file CGObjC.cpp.

ValueTransform

typedef llvm::function_ref<llvm::Value *(CodeGenFunction &CGF, llvm::Value *value)> ValueTransform

Definition at line 3001 of file CGObjC.cpp.

Function Documentation

AdjustObjCObjectType()

RValue AdjustObjCObjectType ( CodeGenFunction & CGF, QualType ET, RValue Result )

static

Adjust the type of an Objective-C object that doesn't match up due to type erasure at various points, e.g., related result types or the use of parameterized classes.

Definition at line 273 of file CGObjC.cpp.

References clang::CodeGen::CodeGenFunction::Builder, clang::CodeGen::CodeGenFunction::ConvertType(), clang::CodeGen::RValue::get(), and clang::Type::isObjCRetainableType().

Referenced by clang::CodeGen::CodeGenFunction::EmitObjCMessageExpr().

AppendFirstImpliedRuntimeProtocols()

void AppendFirstImpliedRuntimeProtocols ( const ObjCProtocolDecl * PD, llvm::UniqueVector< const ObjCProtocolDecl * > & PDs )

static

Definition at line 452 of file CGObjC.cpp.

References AppendFirstImpliedRuntimeProtocols(), clang::ObjCProtocolDecl::getCanonicalDecl(), clang::ObjCProtocolDecl::isNonRuntimeProtocol(), and clang::ObjCProtocolDecl::protocols().

Referenced by AppendFirstImpliedRuntimeProtocols(), and clang::CodeGen::CGObjCRuntime::GetRuntimeProtocolList().

destroyARCStrongWithStore()

void destroyARCStrongWithStore ( CodeGenFunction & CGF, Address addr, QualType type )

static

Like CodeGenFunction::destroyARCStrong, but do it with a call.

Definition at line 1709 of file CGObjC.cpp.

References clang::CodeGen::CodeGenFunction::EmitARCStoreStrongCall(), getNullForVariable(), and clang::ast_matchers::type.

Referenced by emitCXXDestructMethod().

emitARCCopyOperation()

void emitARCCopyOperation ( CodeGenFunction & CGF, Address dst, Address src, llvm::Function *& fn, llvm::Intrinsic::ID IntID )

static

Perform an operation having the following signature: void (i8**, i8**)

Definition at line 2272 of file CGObjC.cpp.

References clang::CodeGen::CodeGenFunction::Builder, clang::CodeGen::CodeGenFunction::CGM, clang::CodeGen::CodeGenFunction::EmitNounwindRuntimeCall(), clang::CodeGen::Address::emitRawPointer(), getARCIntrinsic(), clang::CodeGen::Address::getType(), and clang::CodeGen::CodeGenTypeCache::Int8PtrPtrTy.

Referenced by clang::CodeGen::CodeGenFunction::EmitARCCopyWeak(), and clang::CodeGen::CodeGenFunction::EmitARCMoveWeak().

emitARCLoadOperation()

llvm::Value * emitARCLoadOperation ( CodeGenFunction & CGF, Address addr, llvm::Function *& fn, llvm::Intrinsic::ID IntID )

static

Perform an operation having the following signature: i8* (i8**)

Definition at line 2237 of file CGObjC.cpp.

References clang::CodeGen::CodeGenFunction::CGM, clang::CodeGen::CodeGenFunction::EmitNounwindRuntimeCall(), clang::CodeGen::Address::emitRawPointer(), and getARCIntrinsic().

Referenced by clang::CodeGen::CodeGenFunction::EmitARCLoadWeak(), and clang::CodeGen::CodeGenFunction::EmitARCLoadWeakRetained().

emitARCOperationAfterCall()

llvm::Value * emitARCOperationAfterCall ( CodeGenFunction & CGF, llvm::Value * value, ValueTransform doAfterCall, ValueTransform doFallback )

static

Insert code immediately after a call.

Definition at line 3007 of file CGObjC.cpp.

References clang::CodeGen::CodeGenFunction::Builder, emitARCOperationAfterCall(), and clang::isa().

Referenced by emitARCOperationAfterCall(), emitARCRetainCallResult(), and emitARCUnsafeClaimCallResult().

emitARCRetainCallResult()

llvm::Value * emitARCRetainCallResult ( CodeGenFunction & CGF, const Expr * e )

static

Given that the given expression is some sort of call (which does not return retained), emit a retain following it.

Definition at line 3063 of file CGObjC.cpp.

References emitARCOperationAfterCall(), clang::CodeGen::CodeGenFunction::EmitARCRetainAutoreleasedReturnValue(), clang::CodeGen::CodeGenFunction::EmitARCRetainNonBlock(), and clang::CodeGen::CodeGenFunction::EmitScalarExpr().

Referenced by clang::CodeGen::CodeGenFunction::EmitARCReclaimReturnedObject().

emitARCRetainLoadOfScalar()

llvm::Value * emitARCRetainLoadOfScalar ( CodeGenFunction & CGF, LValue lvalue, QualType type )

static

Definition at line 3479 of file CGObjC.cpp.

References clang::CodeGen::CodeGenFunction::EmitARCRetain(), tryEmitARCRetainLoadOfScalar(), and clang::ast_matchers::type.

Referenced by clang::CodeGen::CodeGenFunction::generateObjCGetterBody().

emitARCStoreOperation()

llvm::Value * emitARCStoreOperation ( CodeGenFunction & CGF, Address addr, llvm::Value * value, llvm::Function *& fn, llvm::Intrinsic::ID IntID, bool ignored )

static

Perform an operation having the following signature: i8* (i8**, i8*)

Definition at line 2248 of file CGObjC.cpp.

References clang::CodeGen::CodeGenFunction::Builder, clang::CodeGen::CodeGenFunction::CGM, clang::CodeGen::CodeGenFunction::EmitNounwindRuntimeCall(), clang::CodeGen::Address::emitRawPointer(), getARCIntrinsic(), clang::CodeGen::Address::getElementType(), clang::CodeGen::CodeGenTypeCache::Int8PtrPtrTy, and clang::CodeGen::CodeGenTypeCache::Int8PtrTy.

Referenced by clang::CodeGen::CodeGenFunction::EmitARCInitWeak(), and clang::CodeGen::CodeGenFunction::EmitARCStoreWeak().

emitARCUnsafeClaimCallResult()

llvm::Value * emitARCUnsafeClaimCallResult ( CodeGenFunction & CGF, const Expr * e )

static

Given that the given expression is some sort of call (which does not return retained), perform an unsafeClaim following it.

Definition at line 3077 of file CGObjC.cpp.

References emitARCOperationAfterCall(), clang::CodeGen::CodeGenFunction::EmitARCUnsafeClaimAutoreleasedReturnValue(), and clang::CodeGen::CodeGenFunction::EmitScalarExpr().

Referenced by clang::CodeGen::CodeGenFunction::EmitARCReclaimReturnedObject().

emitARCUnsafeUnretainedScalarExpr()

llvm::Value * emitARCUnsafeUnretainedScalarExpr ( CodeGenFunction & CGF, const Expr * e )

static

Definition at line 3609 of file CGObjC.cpp.

Referenced by clang::CodeGen::CodeGenFunction::EmitARCUnsafeUnretainedScalarExpr().

emitARCValueOperation()

llvm::Value * emitARCValueOperation ( CodeGenFunction & CGF, llvm::Value * value, llvm::Type * returnType, llvm::Function *& fn, llvm::Intrinsic::ID IntID, llvm::CallInst::TailCallKind tailKind = llvm::CallInst::TCK_None )

static

Perform an operation having the signature i8* (i8*) where a null input causes a no-op and returns null.

Definition at line 2213 of file CGObjC.cpp.

References clang::CodeGen::CodeGenFunction::Builder, clang::CodeGen::CodeGenFunction::CGM, clang::CodeGen::CodeGenFunction::EmitNounwindRuntimeCall(), getARCIntrinsic(), clang::CodeGen::CodeGenTypeCache::Int8PtrTy, and clang::isa().

Referenced by clang::CodeGen::CodeGenFunction::EmitARCAutorelease(), clang::CodeGen::CodeGenFunction::EmitARCAutoreleaseReturnValue(), clang::CodeGen::CodeGenFunction::EmitARCRetainAutoreleaseNonBlock(), clang::CodeGen::CodeGenFunction::EmitARCRetainAutoreleaseReturnValue(), clang::CodeGen::CodeGenFunction::EmitARCRetainBlock(), clang::CodeGen::CodeGenFunction::EmitARCRetainNonBlock(), and emitOptimizedARCReturnCall().

emitAutoreleasedReturnValueMarker()

void emitAutoreleasedReturnValueMarker ( CodeGenFunction & CGF )

static

Definition at line 2373 of file CGObjC.cpp.

References clang::CodeGen::CodeGenFunction::Builder, clang::CodeGen::CodeGenFunction::CGM, clang::CodeGen::TargetCodeGenInfo::getARCRetainAutoreleasedReturnValueMarker(), clang::CodeGen::CodeGenFunction::getBundlesForFunclet(), clang::CodeGen::CodeGenModule::getCodeGenOpts(), clang::CodeGen::CodeGenFunction::getLLVMContext(), clang::CodeGen::CodeGenModule::getModule(), clang::CodeGen::CodeGenModule::getObjCEntrypoints(), clang::CodeGen::CodeGenModule::getTargetCodeGenInfo(), clang::CodeGen::ObjCEntrypoints::retainAutoreleasedReturnValueMarker, clang::ast_matchers::type, and clang::CodeGen::CodeGenTypeCache::VoidTy.

Referenced by emitOptimizedARCReturnCall().

emitCmdValueForGetterSetterBody()

llvm::Value * emitCmdValueForGetterSetterBody ( CodeGenFunction & CGF, ObjCMethodDecl * MD )

static

Definition at line 1121 of file CGObjC.cpp.

References clang::CodeGen::CodeGenFunction::Builder, clang::CodeGen::CodeGenFunction::ConvertType(), clang::CodeGen::CGBuilderTy::CreateLoad(), clang::CodeGen::CodeGenFunction::GetAddrOfLocalVar(), clang::ObjCMethodDecl::getCmdDecl(), clang::CodeGen::CodeGenFunction::getContext(), clang::ASTContext::getObjCSelType(), and clang::ObjCMethodDecl::isDirectMethod().

Referenced by clang::CodeGen::CodeGenFunction::generateObjCGetterBody(), and clang::CodeGen::CodeGenFunction::generateObjCSetterBody().

emitCPPObjectAtomicGetterCall()

void emitCPPObjectAtomicGetterCall ( CodeGenFunction & CGF, llvm::Value * returnAddr, ObjCIvarDecl * ivar, llvm::Constant * AtomicHelperFn )

static

emitCPPObjectAtomicGetterCall - Call the runtime function to copy the ivar into the resturn slot.

Definition at line 1087 of file CGObjC.cpp.

References clang::CodeGen::CallArgList::add(), clang::CodeGen::CodeGenTypes::arrangeBuiltinFunctionCall(), clang::CodeGen::CodeGenFunction::CGM, clang::CodeGen::CodeGenFunction::EmitCall(), clang::CodeGen::CodeGenFunction::EmitLValueForIvar(), clang::CodeGen::CGCallee::forDirect(), clang::CodeGen::RValue::get(), clang::CodeGen::CodeGenFunction::getContext(), clang::CodeGen::CGObjCRuntime::GetCppAtomicObjectGetFunction(), clang::CodeGen::CodeGenModule::getObjCRuntime(), clang::CodeGen::LValue::getPointer(), clang::CodeGen::CodeGenFunction::getTypes(), clang::CodeGen::CodeGenFunction::LoadObjCSelf(), clang::CodeGen::CodeGenFunction::TypeOfSelfObject(), clang::ASTContext::VoidPtrTy, and clang::ASTContext::VoidTy.

Referenced by clang::CodeGen::CodeGenFunction::generateObjCGetterBody().

emitCPPObjectAtomicSetterCall()

void emitCPPObjectAtomicSetterCall ( CodeGenFunction & CGF, ObjCMethodDecl * OMD, ObjCIvarDecl * ivar, llvm::Constant * AtomicHelperFn )

static

emitCPPObjectAtomicSetterCall - Call the runtime function to store the value from the first formal parameter into the given ivar, using the Cpp API for atomic Cpp objects with non-trivial copy assignment.

Definition at line 1403 of file CGObjC.cpp.

References clang::CodeGen::CallArgList::add(), clang::CodeGen::CodeGenTypes::arrangeBuiltinFunctionCall(), clang::CodeGen::CodeGenFunction::CGM, clang::CodeGen::CodeGenFunction::EmitCall(), clang::CodeGen::CodeGenFunction::EmitLValue(), clang::CodeGen::CodeGenFunction::EmitLValueForIvar(), clang::CodeGen::CGCallee::forDirect(), clang::CodeGen::RValue::get(), clang::CodeGen::CodeGenFunction::getContext(), clang::CodeGen::CGObjCRuntime::GetCppAtomicObjectSetFunction(), clang::QualType::getNonReferenceType(), clang::CodeGen::CodeGenModule::getObjCRuntime(), clang::CodeGen::LValue::getPointer(), clang::ValueDecl::getType(), clang::CodeGen::CodeGenFunction::getTypes(), clang::CodeGen::CodeGenFunction::LoadObjCSelf(), clang::ObjCMethodDecl::param_begin(), clang::CodeGen::CodeGenFunction::TypeOfSelfObject(), clang::VK_LValue, clang::ASTContext::VoidPtrTy, and clang::ASTContext::VoidTy.

Referenced by clang::CodeGen::CodeGenFunction::generateObjCSetterBody().

emitCXXDestructMethod()

void emitCXXDestructMethod ( CodeGenFunction & CGF, ObjCImplementationDecl * impl )

static

Definition at line 1716 of file CGObjC.cpp.

References clang::ObjCInterfaceDecl::all_declared_ivar_begin(), destroyARCStrongWithStore(), clang::QualType::DK_objc_strong_lifetime, clang::CodeGen::EHCleanup, clang::CodeGen::CodeGenFunction::EHStack, clang::ObjCImplDecl::getClassInterface(), clang::CodeGen::CodeGenFunction::getCleanupKind(), clang::CodeGen::CodeGenFunction::getDestroyer(), clang::ObjCIvarDecl::getNextIvar(), clang::ValueDecl::getType(), clang::CodeGen::CodeGenFunction::LoadObjCSelf(), clang::CodeGen::CodeGenFunction::RunCleanupsScope::requiresCleanups(), and clang::ast_matchers::type.

Referenced by clang::CodeGen::CodeGenFunction::GenerateObjCCtorDtorMethod().

emitIsPlatformVersionAtLeast()

llvm::Value * emitIsPlatformVersionAtLeast ( CodeGenFunction & CGF, const VersionTuple & Version )

static

Definition at line 3997 of file CGObjC.cpp.

References clang::CodeGen::CodeGenFunction::Builder, clang::CodeGen::CodeGenFunction::CGM, clang::CodeGen::CodeGenModule::CreateRuntimeFunction(), clang::CodeGen::CodeGenFunction::EmitNounwindRuntimeCall(), getBaseMachOPlatformID(), clang::CodeGen::CodeGenModule::getTarget(), clang::TargetInfo::getTriple(), clang::CodeGen::CodeGenTypeCache::Int32Ty, clang::CodeGen::CodeGenModule::IsPlatformVersionAtLeastFn, and clang::Min.

Referenced by clang::CodeGen::CodeGenFunction::EmitBuiltinAvailable().

emitObjCValueOperation()

llvm::Value * emitObjCValueOperation ( CodeGenFunction & CGF, llvm::Value * value, llvm::Type * returnType, llvm::FunctionCallee & fn, StringRef fnName )

static

Perform an operation having the signature i8* (i8*) where a null input causes a no-op and returns null.

Definition at line 2289 of file CGObjC.cpp.

References clang::CodeGen::CodeGenFunction::Builder, clang::Call, clang::CodeGen::CodeGenFunction::CGM, clang::CodeGen::CodeGenModule::CreateRuntimeFunction(), clang::CodeGen::CodeGenFunction::EmitCallOrInvoke(), clang::CodeGen::CodeGenTypeCache::Int8PtrTy, and clang::isa().

Referenced by clang::CodeGen::CodeGenFunction::EmitObjCAlloc(), clang::CodeGen::CodeGenFunction::EmitObjCAllocInit(), clang::CodeGen::CodeGenFunction::EmitObjCAllocWithZone(), clang::CodeGen::CodeGenFunction::EmitObjCAutorelease(), and clang::CodeGen::CodeGenFunction::EmitObjCRetainNonBlock().

emitOptimizedARCReturnCall()

llvm::Value * emitOptimizedARCReturnCall ( llvm::Value * value, bool IsRetainRV, CodeGenFunction & CGF )

static

Definition at line 2412 of file CGObjC.cpp.

References Arch, clang::cast(), clang::CodeGen::CodeGenFunction::CGM, clang::CodeGen::CodeGenFunction::EmitARCNoopIntrinsicUse(), emitARCValueOperation(), emitAutoreleasedReturnValueMarker(), getARCIntrinsic(), clang::CodeGen::CodeGenModule::getCodeGenOpts(), clang::CodeGen::CodeGenModule::getObjCEntrypoints(), clang::CodeGen::CodeGenModule::getTargetCodeGenInfo(), clang::CodeGen::CodeGenModule::getTriple(), clang::CodeGen::TargetCodeGenInfo::markARCOptimizedReturnCallsAsNoTail(), clang::CodeGen::ObjCEntrypoints::objc_retainAutoreleasedReturnValue, and clang::CodeGen::ObjCEntrypoints::objc_unsafeClaimAutoreleasedReturnValue.

Referenced by clang::CodeGen::CodeGenFunction::EmitARCRetainAutoreleasedReturnValue(), and clang::CodeGen::CodeGenFunction::EmitARCUnsafeClaimAutoreleasedReturnValue().

emitStructGetterCall()

void emitStructGetterCall ( CodeGenFunction & CGF, ObjCIvarDecl * ivar, bool isAtomic, bool hasStrong )

static

emitStructGetterCall - Call the runtime function to load a property into the return value slot.

Definition at line 818 of file CGObjC.cpp.

References clang::CodeGen::CallArgList::add(), clang::CodeGen::CodeGenTypes::arrangeBuiltinFunctionCall(), clang::CodeGen::CodeGenFunction::Builder, clang::CodeGen::CodeGenFunction::CGM, clang::CodeGen::CodeGenFunction::EmitCall(), clang::CodeGen::CodeGenFunction::EmitLValueForIvar(), clang::CodeGen::Address::emitRawPointer(), clang::CodeGen::CGCallee::forDirect(), clang::CodeGen::RValue::get(), clang::CodeGen::CodeGenFunction::getContext(), clang::CodeGen::CGObjCRuntime::GetGetStructFunction(), clang::CodeGen::CodeGenModule::getObjCRuntime(), clang::CodeGen::LValue::getPointer(), clang::CodeGen::CodeGenModule::getSize(), clang::ValueDecl::getType(), clang::CodeGen::CodeGenFunction::getTypes(), clang::ASTContext::getTypeSizeInChars(), clang::CodeGen::CodeGenFunction::LoadObjCSelf(), clang::CodeGen::CodeGenFunction::ReturnValue, and clang::CodeGen::CodeGenFunction::TypeOfSelfObject().

Referenced by clang::CodeGen::CodeGenFunction::generateObjCGetterBody().

emitStructSetterCall()

void emitStructSetterCall ( CodeGenFunction & CGF, ObjCMethodDecl * OMD, ObjCIvarDecl * ivar )

static

emitStructSetterCall - Call the runtime function to store the value from the first formal parameter into the given ivar.

Definition at line 1360 of file CGObjC.cpp.

References clang::CodeGen::CallArgList::add(), clang::CodeGen::CodeGenTypes::arrangeBuiltinFunctionCall(), clang::ASTContext::BoolTy, clang::CodeGen::CodeGenFunction::Builder, clang::CodeGen::CodeGenFunction::CGM, clang::CodeGen::CodeGenFunction::EmitCall(), clang::CodeGen::CodeGenFunction::EmitLValue(), clang::CodeGen::CodeGenFunction::EmitLValueForIvar(), clang::CodeGen::CGCallee::forDirect(), clang::CodeGen::RValue::get(), clang::CodeGen::CodeGenFunction::getContext(), clang::QualType::getNonReferenceType(), clang::CodeGen::CodeGenModule::getObjCRuntime(), clang::CodeGen::LValue::getPointer(), clang::CodeGen::CGObjCRuntime::GetSetStructFunction(), clang::CodeGen::CodeGenModule::getSize(), clang::ASTContext::getSizeType(), clang::ValueDecl::getType(), clang::CodeGen::CodeGenFunction::getTypes(), clang::ASTContext::getTypeSizeInChars(), clang::CodeGen::CodeGenTypeCache::Int8PtrTy, clang::CodeGen::CodeGenFunction::LoadObjCSelf(), clang::ObjCMethodDecl::param_begin(), clang::CodeGen::CodeGenFunction::TypeOfSelfObject(), clang::VK_LValue, clang::ASTContext::VoidPtrTy, and clang::ASTContext::VoidTy.

Referenced by clang::CodeGen::CodeGenFunction::generateObjCSetterBody().

findWeakLValue()

const Expr * findWeakLValue ( const Expr * E )

static

Given an expression of ObjC pointer type, check whether it was immediately loaded from an ARC __weak l-value.

Definition at line 350 of file CGObjC.cpp.

References clang::Expr::getType(), clang::Expr::IgnoreParens(), clang::Type::isObjCRetainableType(), and clang::Qualifiers::OCL_Weak.

Referenced by clang::CodeGen::CodeGenFunction::EmitObjCMessageExpr().

getARCIntrinsic()

llvm::Function * getARCIntrinsic ( llvm::Intrinsic::ID IntID, CodeGenModule & CGM )

static

Definition at line 2203 of file CGObjC.cpp.

References clang::CodeGen::CodeGenModule::getIntrinsic(), and setARCRuntimeFunctionLinkage().

Referenced by emitARCCopyOperation(), clang::CodeGen::CodeGenFunction::EmitARCDestroyWeak(), emitARCLoadOperation(), clang::CodeGen::CodeGenFunction::EmitARCRelease(), emitARCStoreOperation(), clang::CodeGen::CodeGenFunction::EmitARCStoreStrongCall(), emitARCValueOperation(), clang::CodeGen::CodeGenFunction::EmitObjCAutoreleasePoolPop(), clang::CodeGen::CodeGenFunction::EmitObjCAutoreleasePoolPush(), and emitOptimizedARCReturnCall().

getBaseMachOPlatformID()

unsigned getBaseMachOPlatformID ( const llvm::Triple & TT )

static

Definition at line 3977 of file CGObjC.cpp.

Referenced by emitIsPlatformVersionAtLeast().

getMaxAtomicAccessSize()

CharUnits getMaxAtomicAccessSize ( CodeGenModule & CGM, llvm::Triple::ArchType arch )

static

Return the maximum size that permits atomic accesses for the given architecture.

Definition at line 856 of file CGObjC.cpp.

References clang::CharUnits::fromQuantity(), and clang::CodeGen::CodeGenTypeCache::PointerSizeInBytes.

getNullForVariable()

llvm::Constant * getNullForVariable ( Address addr )

static

Given the address of a variable of pointer type, find the correct null to store into it.

Definition at line 45 of file CGObjC.cpp.

References clang::cast(), clang::CodeGen::Address::getElementType(), and clang::ast_matchers::type.

Referenced by destroyARCStrongWithStore(), clang::CodeGen::CodeGenFunction::EmitARCDestroyStrong(), clang::CodeGen::CodeGenFunction::EmitObjCMessageExpr(), and tryEmitARCRetainLoadOfScalar().

hasTrivialGetExpr()

bool hasTrivialGetExpr ( const ObjCPropertyImplDecl * propImpl )

static

Definition at line 1062 of file CGObjC.cpp.

References clang::ObjCPropertyImplDecl::getGetterCXXConstructor(), clang::isa(), and clang::Expr::isGLValue().

Referenced by clang::CodeGen::CodeGenFunction::GenerateObjCAtomicGetterCopyHelperFunction(), and clang::CodeGen::CodeGenFunction::generateObjCGetterBody().

hasTrivialSetExpr()

bool hasTrivialSetExpr ( const ObjCPropertyImplDecl * PID )

static

Definition at line 1437 of file CGObjC.cpp.

References clang::ObjCPropertyImplDecl::getSetterCXXAssignment(), and clang::isa().

Referenced by clang::CodeGen::CodeGenFunction::GenerateObjCAtomicSetterCopyHelperFunction(), and clang::CodeGen::CodeGenFunction::generateObjCSetterBody().

hasUnalignedAtomics()

bool hasUnalignedAtomics ( llvm::Triple::ArchType arch )

static

Determine whether the given architecture supports unaligned atomic accesses.

They don't have to be fast, just faster than a function call and a mutex.

Definition at line 848 of file CGObjC.cpp.

isFoundationNeededForDarwinAvailabilityCheck()

bool isFoundationNeededForDarwinAvailabilityCheck ( const llvm::Triple & TT, const VersionTuple & TargetVersion )

static

Definition at line 4058 of file CGObjC.cpp.

References clang::TargetVersion.

setARCRuntimeFunctionLinkage() [1/2]

void setARCRuntimeFunctionLinkage ( CodeGenModule & CGM, llvm::FunctionCallee RTF )

static

Definition at line 2198 of file CGObjC.cpp.

References setARCRuntimeFunctionLinkage().

setARCRuntimeFunctionLinkage() [2/2]

void setARCRuntimeFunctionLinkage ( CodeGenModule & CGM, llvm::Value * RTF )

static

Definition at line 2186 of file CGObjC.cpp.

References clang::CodeGen::CodeGenModule::getLangOpts(), clang::CodeGen::CodeGenModule::getTriple(), clang::ObjCRuntime::hasNativeARC(), and clang::LangOptions::ObjCRuntime.

Referenced by clang::CodeGen::CodeGenFunction::EmitObjCAutoreleasePoolPop(), clang::CodeGen::CodeGenFunction::EmitObjCRelease(), getARCIntrinsic(), and setARCRuntimeFunctionLinkage().

shouldEmitSeparateBlockRetain()

bool shouldEmitSeparateBlockRetain ( const Expr * e )

static

Determine whether it might be important to emit a separate objc_retain_block on the result of the given expression, or whether it's okay to just emit it in a +1 context.

Definition at line 3103 of file CGObjC.cpp.

References clang::cast(), clang::Expr::getType(), clang::Expr::IgnoreParens(), clang::isa(), clang::Type::isBlockPointerType(), and shouldEmitSeparateBlockRetain().

Referenced by clang::CodeGen::CodeGenFunction::EmitARCExtendBlockObject(), and shouldEmitSeparateBlockRetain().

shouldExtendReceiverForInnerPointerMessage()

bool shouldExtendReceiverForInnerPointerMessage ( const ObjCMessageExpr * message )

static

Decide whether to extend the lifetime of the receiver of a returns-inner-pointer message.

Definition at line 291 of file CGObjC.cpp.

References clang::ObjCMessageExpr::Class, clang::CastExpr::getCastKind(), clang::DeclRefExpr::getDecl(), clang::ObjCMessageExpr::getInstanceReceiver(), clang::QualType::getObjCLifetime(), clang::ObjCMessageExpr::getReceiverKind(), clang::CastExpr::getSubExpr(), clang::Expr::getType(), clang::Expr::IgnoreParens(), clang::ObjCMessageExpr::Instance, clang::isa(), clang::Qualifiers::OCL_Strong, clang::ObjCMessageExpr::SuperClass, and clang::ObjCMessageExpr::SuperInstance.

Referenced by clang::CodeGen::CodeGenFunction::EmitObjCMessageExpr().

shouldRetainObjCLifetime()

bool shouldRetainObjCLifetime ( Qualifiers::ObjCLifetime lifetime )

static

Definition at line 2923 of file CGObjC.cpp.

References clang::Qualifiers::OCL_Autoreleasing, clang::Qualifiers::OCL_ExplicitNone, clang::Qualifiers::OCL_None, clang::Qualifiers::OCL_Strong, and clang::Qualifiers::OCL_Weak.

Referenced by tryEmitARCRetainLoadOfScalar(), and tryEmitARCRetainLoadOfScalar().

tryEmitARCRetainLoadOfScalar() [1/2]

TryEmitResult tryEmitARCRetainLoadOfScalar ( CodeGenFunction & CGF, const Expr * e )

static

Definition at line 2952 of file CGObjC.cpp.

References clang::cast(), clang::CodeGen::CodeGenFunction::EmitLoadOfLValue(), clang::CodeGen::CodeGenFunction::EmitLValue(), clang::CodeGen::CodeGenFunction::emitScalarConstant(), clang::CodeGen::CodeGenFunction::EmitScalarExpr(), clang::CodeGen::CodeGenFunction::EmitStoreOfScalar(), clang::CodeGen::CodeGenFunction::getLangOpts(), getNullForVariable(), clang::CodeGen::RValue::getScalarVal(), clang::Expr::getType(), clang::Expr::IgnoreParens(), clang::isa(), clang::Expr::isXValue(), clang::Qualifiers::OCL_Strong, clang::Qualifiers::OCL_Weak, shouldRetainObjCLifetime(), tryEmitARCRetainLoadOfScalar(), clang::CodeGen::CodeGenFunction::tryEmitAsConstant(), and clang::ast_matchers::type.

tryEmitARCRetainLoadOfScalar() [2/2]

TryEmitResult tryEmitARCRetainLoadOfScalar ( CodeGenFunction & CGF, LValue lvalue, QualType type )

static

Definition at line 2938 of file CGObjC.cpp.

References clang::CodeGen::CodeGenFunction::EmitARCLoadWeakRetained(), clang::CodeGen::CodeGenFunction::EmitLoadOfLValue(), clang::CodeGen::RValue::getScalarVal(), clang::Qualifiers::OCL_Weak, shouldRetainObjCLifetime(), and clang::ast_matchers::type.

Referenced by emitARCRetainLoadOfScalar(), and tryEmitARCRetainLoadOfScalar().

tryEmitARCRetainScalarExpr()

TryEmitResult tryEmitARCRetainScalarExpr ( CodeGenFunction & CGF, const Expr * e )

static

Definition at line 3475 of file CGObjC.cpp.

Referenced by clang::CodeGen::CodeGenFunction::EmitARCExtendBlockObject(), clang::CodeGen::CodeGenFunction::EmitARCRetainAutoreleaseScalarExpr(), clang::CodeGen::CodeGenFunction::EmitARCRetainScalarExpr(), clang::CodeGen::CodeGenFunction::EmitARCStoreStrong(), and clang::CodeGen::CodeGenFunction::EmitObjCMessageExpr().

tryEmitSpecializedAllocInit()

std::optional< llvm::Value * > tryEmitSpecializedAllocInit ( CodeGenFunction & CGF, const ObjCMessageExpr * OME )

static

Instead of '[[MyClass alloc] init]', try to generate 'objc_alloc_init(MyClass)'.

This provides a code size improvement on the caller side, as well as the optimized objc_alloc.

Definition at line 525 of file CGObjC.cpp.

References clang::Type::castAs(), clang::CodeGen::CodeGenFunction::CGM, clang::ObjCMessageExpr::Class, clang::CodeGen::CodeGenFunction::ConvertType(), clang::CodeGen::CodeGenFunction::EmitObjCAllocInit(), clang::CodeGen::CodeGenFunction::EmitScalarExpr(), clang::CodeGen::CGObjCRuntime::GetClass(), clang::ObjCMessageExpr::getInstanceReceiver(), clang::CodeGen::CodeGenFunction::getLangOpts(), clang::Selector::getNameForSlot(), clang::CodeGen::CodeGenModule::getObjCRuntime(), clang::ObjCMessageExpr::getReceiverKind(), clang::ObjCMessageExpr::getSelector(), clang::Expr::getType(), clang::Expr::IgnoreParenCasts(), clang::ObjCMessageExpr::Instance, clang::Type::isObjCObjectPointerType(), clang::Selector::isUnarySelector(), clang::LangOptions::ObjCRuntime, clang::ObjCMessageExpr::SuperClass, and clang::ObjCMessageExpr::SuperInstance.

Referenced by clang::CodeGen::CodeGenFunction::EmitObjCMessageExpr().

tryGenerateSpecializedMessageSend()

std::optional< llvm::Value * > tryGenerateSpecializedMessageSend ( CodeGenFunction & CGF, QualType ResultType, llvm::Value * Receiver, const CallArgList & Args, Selector Sel, const ObjCMethodDecl * method, bool isClassMessage )

static

The ObjC runtime may provide entrypoints that are likely to be faster than an ordinary message send of the appropriate selector.

The entrypoints are guaranteed to be equivalent to just sending the corresponding message. If the entrypoint is implemented naively as just a message send, using it is a trade-off: it sacrifices a few cycles of overhead to save a small amount of code. However, it's possible for runtimes to detect and special-case classes that use "standard" behavior; if that's dynamically a large proportion of all objects, using the entrypoint will also be faster than using a message send.

If the runtime does support a required entrypoint, then this method will generate a call and return the resulting value. Otherwise it will return std::nullopt and the caller can generate a msgSend instead.

Definition at line 377 of file CGObjC.cpp.

References clang::CodeGen::ARCPreciseLifetime, clang::CodeGen::CodeGenFunction::CGM, clang::CodeGen::CodeGenFunction::ConvertType(), clang::CodeGen::CodeGenFunction::EmitObjCAlloc(), clang::CodeGen::CodeGenFunction::EmitObjCAllocWithZone(), clang::CodeGen::CodeGenFunction::EmitObjCAutorelease(), clang::CodeGen::CodeGenFunction::EmitObjCRelease(), clang::CodeGen::CodeGenFunction::EmitObjCRetainNonBlock(), clang::CodeGen::CodeGenModule::getLangOpts(), clang::Selector::getMethodFamily(), clang::Selector::getNameForSlot(), clang::Selector::getNumArgs(), clang::isa(), clang::Selector::isKeywordSelector(), clang::Type::isObjCObjectPointerType(), clang::Selector::isUnarySelector(), clang::Type::isVoidType(), clang::LangOptionsBase::NonGC, clang::LangOptions::ObjCRuntime, clang::OMF_alloc, clang::OMF_autorelease, clang::OMF_release, and clang::OMF_retain.

Referenced by clang::CodeGen::CGObjCRuntime::GeneratePossiblySpecializedMessageSend().

UseOptimizedSetter()

bool UseOptimizedSetter ( CodeGenModule & CGM )

static

Definition at line 1461 of file CGObjC.cpp.

References clang::CodeGen::CodeGenModule::getLangOpts(), clang::ObjCRuntime::hasOptimizedSetter(), clang::LangOptionsBase::NonGC, and clang::LangOptions::ObjCRuntime.

Referenced by clang::CodeGen::CodeGenFunction::generateObjCSetterBody().