CGObjC.cpp File Reference

#include "CGDebugInfo.h"
#include "CGObjCRuntime.h"
#include "CodeGenFunction.h"
#include "CodeGenModule.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 35 of file CGObjC.cpp.

ValueTransform

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

Definition at line 2954 of file CGObjC.cpp.

Function Documentation

AdjustObjCObjectType()

static 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 272 of file CGObjC.cpp.

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

AppendFirstImpliedRuntimeProtocols()

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

static

Definition at line 451 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()

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

static

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

Definition at line 1664 of file CGObjC.cpp.

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

Referenced by emitCXXDestructMethod().

emitARCCopyOperation()

static 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 2226 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.

emitARCLoadOperation()

static 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 2191 of file CGObjC.cpp.

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

emitARCOperationAfterCall()

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

static

Insert code immediately after a call.

Definition at line 2960 of file CGObjC.cpp.

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

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

emitARCRetainCallResult()

static 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 3016 of file CGObjC.cpp.

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

emitARCRetainLoadOfScalar()

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

static

Definition at line 3432 of file CGObjC.cpp.

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

emitARCStoreOperation()

static 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 2202 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.

emitARCUnsafeClaimCallResult()

static 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 3030 of file CGObjC.cpp.

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

emitARCUnsafeUnretainedScalarExpr()

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

static

Definition at line 3562 of file CGObjC.cpp.

emitARCValueOperation()

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  )

static

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

Definition at line 2167 of file CGObjC.cpp.

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

Referenced by emitOptimizedARCReturnCall().

emitAutoreleasedReturnValueMarker()

static void emitAutoreleasedReturnValueMarker ( CodeGenFunction &  CGF )

static

Definition at line 2327 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()

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

static

Definition at line 1120 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().

emitCPPObjectAtomicGetterCall()

static 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 1086 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.

emitCPPObjectAtomicSetterCall()

static 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 1366 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.

emitCXXDestructMethod()

static void emitCXXDestructMethod ( CodeGenFunction &  CGF, ObjCImplementationDecl *  impl  )

static

Definition at line 1671 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(), and clang::ast_matchers::type.

emitIsPlatformVersionAtLeast()

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

static

Definition at line 3950 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.

emitObjCValueOperation()

static 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 2243 of file CGObjC.cpp.

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

emitOptimizedARCReturnCall()

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

static

Definition at line 2366 of file CGObjC.cpp.

References 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.

emitStructGetterCall()

static 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 817 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::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::ASTContext::getSizeType(), clang::ValueDecl::getType(), clang::CodeGen::CodeGenFunction::getTypes(), clang::ASTContext::getTypeSizeInChars(), clang::CodeGen::CodeGenFunction::LoadObjCSelf(), clang::CodeGen::CodeGenFunction::ReturnValue, clang::CodeGen::CodeGenFunction::TypeOfSelfObject(), clang::ASTContext::VoidPtrTy, and clang::ASTContext::VoidTy.

emitStructSetterCall()

static 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 1323 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.

findWeakLValue()

static 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 349 of file CGObjC.cpp.

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

getARCIntrinsic()

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

static

Definition at line 2157 of file CGObjC.cpp.

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

Referenced by emitARCCopyOperation(), emitARCLoadOperation(), emitARCStoreOperation(), emitARCValueOperation(), and emitOptimizedARCReturnCall().

getBaseMachOPlatformID()

static unsigned getBaseMachOPlatformID ( const llvm::Triple &  TT )

static

Definition at line 3930 of file CGObjC.cpp.

Referenced by emitIsPlatformVersionAtLeast().

getMaxAtomicAccessSize()

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

static

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

Definition at line 855 of file CGObjC.cpp.

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

getNullForVariable()

static 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 44 of file CGObjC.cpp.

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

Referenced by destroyARCStrongWithStore(), and tryEmitARCRetainLoadOfScalar().

hasTrivialGetExpr()

static bool hasTrivialGetExpr ( const ObjCPropertyImplDecl *  propImpl )

static

Definition at line 1061 of file CGObjC.cpp.

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

hasTrivialSetExpr()

static bool hasTrivialSetExpr ( const ObjCPropertyImplDecl *  PID )

static

Definition at line 1400 of file CGObjC.cpp.

References clang::ObjCPropertyImplDecl::getSetterCXXAssignment().

hasUnalignedAtomics()

static 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 847 of file CGObjC.cpp.

isFoundationNeededForDarwinAvailabilityCheck()

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

static

Definition at line 4011 of file CGObjC.cpp.

References clang::TargetVersion.

setARCRuntimeFunctionLinkage() [1/2]

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

static

Definition at line 2152 of file CGObjC.cpp.

References setARCRuntimeFunctionLinkage().

setARCRuntimeFunctionLinkage() [2/2]

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

static

Definition at line 2140 of file CGObjC.cpp.

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

Referenced by getARCIntrinsic(), and setARCRuntimeFunctionLinkage().

shouldEmitSeparateBlockRetain()

static 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 3056 of file CGObjC.cpp.

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

Referenced by shouldEmitSeparateBlockRetain().

shouldExtendReceiverForInnerPointerMessage()

static bool shouldExtendReceiverForInnerPointerMessage ( const ObjCMessageExpr *  message )

static

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

Definition at line 290 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::Qualifiers::OCL_Strong, clang::ObjCMessageExpr::SuperClass, and clang::ObjCMessageExpr::SuperInstance.

shouldRetainObjCLifetime()

static bool shouldRetainObjCLifetime ( Qualifiers::ObjCLifetime  lifetime )

static

Definition at line 2876 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().

tryEmitARCRetainLoadOfScalar() [1/2]

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

static

Definition at line 2905 of file CGObjC.cpp.

References clang::CodeGen::CodeGenFunction::EmitLoadOfLValue(), clang::CodeGen::CodeGenFunction::EmitLValue(), clang::CodeGen::CodeGenFunction::emitScalarConstant(), clang::CodeGen::CodeGenFunction::EmitScalarExpr(), clang::CodeGen::CodeGenFunction::EmitStoreOfScalar(), clang::CodeGen::LValue::getAddress(), clang::CodeGen::CodeGenFunction::getLangOpts(), getNullForVariable(), clang::CodeGen::RValue::getScalarVal(), clang::Expr::getType(), clang::Expr::IgnoreParens(), 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]

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

static

Definition at line 2891 of file CGObjC.cpp.

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

Referenced by emitARCRetainLoadOfScalar(), and tryEmitARCRetainLoadOfScalar().

tryEmitARCRetainScalarExpr()

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

static

Definition at line 3428 of file CGObjC.cpp.

tryEmitSpecializedAllocInit()

static 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 524 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::ObjCObjectType::getInterface(), 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.

tryGenerateSpecializedMessageSend()

static 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 376 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::Selector::getMethodFamily(), clang::Selector::getNameForSlot(), clang::Selector::getNumArgs(), clang::Selector::isKeywordSelector(), clang::Type::isObjCObjectPointerType(), clang::Selector::isUnarySelector(), clang::Type::isVoidType(), clang::LangOptionsBase::NonGC, clang::OMF_alloc, clang::OMF_autorelease, clang::OMF_release, and clang::OMF_retain.

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

UseOptimizedSetter()

static bool UseOptimizedSetter ( CodeGenModule &  CGM )

static

Definition at line 1424 of file CGObjC.cpp.

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