#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/DeclObjC.h"#include "clang/AST/StmtObjC.h"#include "clang/Basic/Diagnostic.h"#include "clang/CodeGen/CGFunctionInfo.h"#include "llvm/ADT/STLExtras.h"#include "llvm/IR/DataLayout.h"#include "llvm/IR/InlineAsm.h"
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. More... | |
| static llvm::Constant * | getNullForVariable (Address addr) |
| Given the address of a variable of pointer type, find the correct null to store into it. More... | |
| static bool | shouldExtendReceiverForInnerPointerMessage (const ObjCMessageExpr *message) |
| Decide whether to extend the lifetime of the receiver of a returns-inner-pointer message. More... | |
| 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. More... | |
| static 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. More... | |
| static Optional< llvm::Value * > | tryEmitSpecializedAllocInit (CodeGenFunction &CGF, const ObjCMessageExpr *OME) |
| Instead of '[[MyClass alloc] init]', try to generate 'objc_alloc_init(MyClass)'. More... | |
| 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. More... | |
| static bool | hasUnalignedAtomics (llvm::Triple::ArchType arch) |
| Determine whether the given architecture supports unaligned atomic accesses. More... | |
| static CharUnits | getMaxAtomicAccessSize (CodeGenModule &CGM, llvm::Triple::ArchType arch) |
| Return the maximum size that permits atomic accesses for the given architecture. More... | |
| 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. More... | |
| 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. More... | |
| 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. More... | |
| 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. More... | |
| 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::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. More... | |
| static llvm::Value * | emitARCLoadOperation (CodeGenFunction &CGF, Address addr, llvm::Function *&fn, llvm::Intrinsic::ID IntID) |
| Perform an operation having the following signature: i8* (i8**) More... | |
| 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*) More... | |
| 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**) More... | |
| 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. More... | |
| static void | emitAutoreleasedReturnValueMarker (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. More... | |
| 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. More... | |
| 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. More... | |
| 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. More... | |
| static llvm::Value * | emitARCUnsafeUnretainedScalarExpr (CodeGenFunction &CGF, const Expr *e) |
Typedef Documentation
◆ TryEmitResult
| typedef llvm::PointerIntPair<llvm::Value*,1,bool> TryEmitResult |
Definition at line 30 of file CGObjC.cpp.
◆ ValueTransform
| typedef llvm::function_ref<llvm::Value *(CodeGenFunction &CGF, llvm::Value *value)> ValueTransform |
Definition at line 2765 of file CGObjC.cpp.
Function Documentation
◆ AdjustObjCObjectType()
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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 266 of file CGObjC.cpp.
References clang::CodeGen::CodeGenFunction::Builder, clang::CodeGen::CodeGenFunction::ConvertType(), clang::CodeGen::CGBuilderTy::CreateBitCast(), clang::CodeGen::RValue::get(), clang::CodeGen::RValue::getScalarVal(), clang::Type::isObjCRetainableType(), and clang::CodeGen::Type.
Referenced by clang::CodeGen::CodeGenFunction::EmitObjCMessageExpr().
◆ destroyARCStrongWithStore()
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Like CodeGenFunction::destroyARCStrong, but do it with a call.
Definition at line 1527 of file CGObjC.cpp.
References clang::CodeGen::CodeGenFunction::EmitARCStoreStrongCall(), and getNullForVariable().
Referenced by emitCXXDestructMethod().
◆ emitARCCopyOperation()
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Perform an operation having the following signature: void (i8**, i8**)
Definition at line 2060 of file CGObjC.cpp.
References clang::CodeGen::CodeGenFunction::Builder, clang::CodeGen::CodeGenFunction::CGM, clang::CodeGen::CGBuilderTy::CreateBitCast(), clang::CodeGen::CodeGenFunction::EmitNounwindRuntimeCall(), clang::CodeGen::CodeGenModule::getIntrinsic(), clang::CodeGen::Address::getPointer(), clang::CodeGen::Address::getType(), clang::CodeGen::CodeGenTypeCache::Int8PtrPtrTy, and setARCRuntimeFunctionLinkage().
Referenced by clang::CodeGen::CodeGenFunction::EmitARCCopyWeak(), and clang::CodeGen::CodeGenFunction::EmitARCMoveWeak().
◆ emitARCLoadOperation()
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Perform an operation having the following signature: i8* (i8**)
Definition at line 2009 of file CGObjC.cpp.
References clang::CodeGen::CodeGenFunction::Builder, clang::CodeGen::CodeGenFunction::CGM, clang::CodeGen::CGBuilderTy::CreateBitCast(), clang::CodeGen::CodeGenFunction::EmitNounwindRuntimeCall(), clang::CodeGen::Address::getElementType(), clang::CodeGen::CodeGenModule::getIntrinsic(), clang::CodeGen::Address::getPointer(), clang::CodeGen::CodeGenTypeCache::Int8PtrPtrTy, clang::CodeGen::CodeGenTypeCache::Int8PtrTy, setARCRuntimeFunctionLinkage(), and clang::CodeGen::Type.
Referenced by clang::CodeGen::CodeGenFunction::EmitARCLoadWeak(), and clang::CodeGen::CodeGenFunction::EmitARCLoadWeakRetained().
◆ emitARCOperationAfterCall()
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Insert code immediately after a call.
Definition at line 2768 of file CGObjC.cpp.
References clang::CodeGen::CodeGenFunction::Builder.
Referenced by emitARCRetainCallResult(), and emitARCUnsafeClaimCallResult().
◆ emitARCRetainCallResult()
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Given that the given expression is some sort of call (which does not return retained), emit a retain following it.
Definition at line 2811 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(), and shouldEmitSeparateBlockRetain().
◆ emitARCRetainLoadOfScalar()
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Definition at line 3226 of file CGObjC.cpp.
References clang::CodeGen::CodeGenFunction::EmitARCRetain(), and tryEmitARCRetainLoadOfScalar().
Referenced by clang::CodeGen::CodeGenFunction::generateObjCGetterBody(), and clang::CodeGen::CodeGenFunction::StartObjCMethod().
◆ emitARCStoreOperation()
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Perform an operation having the following signature: i8* (i8**, i8*)
Definition at line 2033 of file CGObjC.cpp.
References clang::CodeGen::CodeGenFunction::Builder, clang::CodeGen::CodeGenFunction::CGM, clang::CodeGen::CGBuilderTy::CreateBitCast(), clang::CodeGen::CodeGenFunction::EmitNounwindRuntimeCall(), clang::CodeGen::Address::getElementType(), clang::CodeGen::CodeGenModule::getIntrinsic(), clang::CodeGen::Address::getPointer(), clang::CodeGen::CodeGenTypeCache::Int8PtrPtrTy, clang::CodeGen::CodeGenTypeCache::Int8PtrTy, setARCRuntimeFunctionLinkage(), and clang::CodeGen::Type.
Referenced by clang::CodeGen::CodeGenFunction::EmitARCInitWeak(), and clang::CodeGen::CodeGenFunction::EmitARCStoreWeak().
◆ emitARCUnsafeClaimCallResult()
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Given that the given expression is some sort of call (which does not return retained), perform an unsafeClaim following it.
Definition at line 2825 of file CGObjC.cpp.
References emitARCOperationAfterCall(), clang::CodeGen::CodeGenFunction::EmitARCUnsafeClaimAutoreleasedReturnValue(), and clang::CodeGen::CodeGenFunction::EmitScalarExpr().
Referenced by clang::CodeGen::CodeGenFunction::EmitARCReclaimReturnedObject().
◆ emitARCUnsafeUnretainedScalarExpr()
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Definition at line 3358 of file CGObjC.cpp.
Referenced by clang::CodeGen::CodeGenFunction::EmitARCUnsafeUnretainedScalarExpr().
◆ emitARCValueOperation()
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Perform an operation having the signature i8* (i8*) where a null input causes a no-op and returns null.
Definition at line 1983 of file CGObjC.cpp.
References clang::CodeGen::CodeGenFunction::Builder, clang::CodeGen::CodeGenFunction::CGM, clang::CodeGen::CGBuilderTy::CreateBitCast(), clang::CodeGen::CodeGenFunction::EmitNounwindRuntimeCall(), clang::CodeGen::CodeGenModule::getIntrinsic(), clang::CodeGen::CodeGenTypeCache::Int8PtrTy, setARCRuntimeFunctionLinkage(), and clang::CodeGen::Type.
Referenced by clang::CodeGen::CodeGenFunction::EmitARCAutorelease(), clang::CodeGen::CodeGenFunction::EmitARCAutoreleaseReturnValue(), clang::CodeGen::CodeGenFunction::EmitARCRetainAutoreleasedReturnValue(), clang::CodeGen::CodeGenFunction::EmitARCRetainAutoreleaseNonBlock(), clang::CodeGen::CodeGenFunction::EmitARCRetainAutoreleaseReturnValue(), clang::CodeGen::CodeGenFunction::EmitARCRetainBlock(), clang::CodeGen::CodeGenFunction::EmitARCRetainNonBlock(), and clang::CodeGen::CodeGenFunction::EmitARCUnsafeClaimAutoreleasedReturnValue().
◆ emitAutoreleasedReturnValueMarker()
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Definition at line 2157 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, and clang::CodeGen::CodeGenTypeCache::VoidTy.
Referenced by clang::CodeGen::CodeGenFunction::EmitARCRetainAutoreleasedReturnValue(), and clang::CodeGen::CodeGenFunction::EmitARCUnsafeClaimAutoreleasedReturnValue().
◆ emitCPPObjectAtomicGetterCall()
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emitCPPObjectAtomicGetterCall - Call the runtime function to copy the ivar into the resturn slot.
Definition at line 992 of file CGObjC.cpp.
References clang::CodeGen::CallArgList::add(), clang::CodeGen::CodeGenTypes::arrangeBuiltinFunctionCall(), clang::CodeGen::CodeGenFunction::Builder, clang::CodeGen::CodeGenFunction::CGM, clang::CodeGen::CGBuilderTy::CreateBitCast(), 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::CodeGenFunction::getTypes(), clang::CodeGen::CodeGenTypeCache::Int8PtrTy, clang::CodeGen::CodeGenFunction::LoadObjCSelf(), clang::CodeGen::CodeGenFunction::TypeOfSelfObject(), clang::ASTContext::VoidPtrTy, and clang::ASTContext::VoidTy.
Referenced by clang::CodeGen::CodeGenFunction::generateObjCGetterBody().
◆ emitCPPObjectAtomicSetterCall()
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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 1244 of file CGObjC.cpp.
References clang::CodeGen::CallArgList::add(), clang::CodeGen::CodeGenTypes::arrangeBuiltinFunctionCall(), clang::CodeGen::CodeGenFunction::Builder, clang::CodeGen::CodeGenFunction::CGM, clang::CodeGen::CGBuilderTy::CreateBitCast(), 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::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().
◆ emitCXXDestructMethod()
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Definition at line 1534 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::QualType::isDestructedType(), clang::CodeGen::CodeGenFunction::LoadObjCSelf(), and clang::CodeGen::CodeGenFunction::RunCleanupsScope::requiresCleanups().
◆ emitObjCValueOperation()
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Perform an operation having the signature i8* (i8*) where a null input causes a no-op and returns null.
Definition at line 2080 of file CGObjC.cpp.
References clang::CodeGen::CodeGenFunction::Builder, clang::CodeGen::CodeGenFunction::CGM, clang::CodeGen::CGBuilderTy::CreateBitCast(), clang::CodeGen::CodeGenModule::CreateRuntimeFunction(), clang::CodeGen::CodeGenFunction::EmitCallOrInvoke(), clang::CodeGen::CodeGenTypeCache::Int8PtrTy, and clang::CodeGen::Type.
Referenced by clang::CodeGen::CodeGenFunction::EmitObjCAlloc(), clang::CodeGen::CodeGenFunction::EmitObjCAllocInit(), clang::CodeGen::CodeGenFunction::EmitObjCAllocWithZone(), clang::CodeGen::CodeGenFunction::EmitObjCAutorelease(), and clang::CodeGen::CodeGenFunction::EmitObjCRetainNonBlock().
◆ emitStructGetterCall()
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emitStructGetterCall - Call the runtime function to load a property into the return value slot.
Definition at line 726 of file CGObjC.cpp.
Referenced by clang::CodeGen::CodeGenFunction::generateObjCGetterBody().
◆ emitStructSetterCall()
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emitStructSetterCall - Call the runtime function to store the value from the first formal parameter into the given ivar.
Definition at line 1200 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::CGBuilderTy::CreateBitCast(), 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()
Given an expression of ObjC pointer type, check whether it was immediately loaded from an ARC __weak l-value.
Definition at line 343 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().
◆ getMaxAtomicAccessSize()
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Return the maximum size that permits atomic accesses for the given architecture.
Definition at line 766 of file CGObjC.cpp.
References clang::CodeGen::CodeGenFunction::CGM, clang::ObjCPropertyDecl::Copy, clang::CharUnits::fromQuantity(), clang::LangOptions::GCOnly, clang::Type::getAs(), clang::CodeGen::CodeGenModule::getContext(), getKind(), clang::CodeGen::CodeGenModule::getLangOpts(), clang::ASTContext::getObjCGCAttrKind(), clang::QualType::getObjCLifetime(), clang::ObjCPropertyImplDecl::getPropertyDecl(), clang::ObjCPropertyImplDecl::getPropertyIvarDecl(), clang::ObjCPropertyDecl::getSetterKind(), clang::CodeGen::CodeGenModule::getTarget(), clang::TargetInfo::getTriple(), clang::ValueDecl::getType(), clang::ASTContext::getTypeInfoInChars(), clang::QualType::hasNonTrivialObjCLifetime(), hasUnalignedAtomics(), clang::ObjCPropertyDecl::isAtomic(), clang::FieldDecl::isBitField(), clang::Qualifiers::OCL_Strong, clang::CodeGen::CodeGenTypeCache::PointerSizeInBytes, clang::ast_matchers::recordType, and clang::ObjCPropertyDecl::Retain.
◆ getNullForVariable()
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Given the address of a variable of pointer type, find the correct null to store into it.
Definition at line 39 of file CGObjC.cpp.
References clang::CodeGen::Address::getElementType(), and clang::CodeGen::Type.
Referenced by destroyARCStrongWithStore(), clang::CodeGen::CodeGenFunction::EmitARCDestroyStrong(), clang::CodeGen::CodeGenFunction::EmitObjCMessageExpr(), and tryEmitARCRetainLoadOfScalar().
◆ hasTrivialGetExpr()
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Definition at line 967 of file CGObjC.cpp.
References clang::ObjCPropertyImplDecl::getGetterCXXConstructor(), and clang::Expr::isGLValue().
Referenced by clang::CodeGen::CodeGenFunction::GenerateObjCAtomicGetterCopyHelperFunction(), and clang::CodeGen::CodeGenFunction::generateObjCGetterBody().
◆ hasTrivialSetExpr()
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Definition at line 1280 of file CGObjC.cpp.
References clang::ObjCPropertyImplDecl::getSetterCXXAssignment().
Referenced by clang::CodeGen::CodeGenFunction::GenerateObjCAtomicSetterCopyHelperFunction(), and clang::CodeGen::CodeGenFunction::generateObjCSetterBody().
◆ hasUnalignedAtomics()
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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 758 of file CGObjC.cpp.
Referenced by getMaxAtomicAccessSize().
◆ setARCRuntimeFunctionLinkage() [1/2]
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Definition at line 1963 of file CGObjC.cpp.
References clang::CodeGen::CodeGenModule::getLangOpts(), clang::CodeGen::CodeGenModule::getTriple(), clang::ObjCRuntime::hasNativeARC(), and clang::LangOptions::ObjCRuntime.
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(), clang::CodeGen::CodeGenFunction::EmitObjCRelease(), and setARCRuntimeFunctionLinkage().
◆ setARCRuntimeFunctionLinkage() [2/2]
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Definition at line 1975 of file CGObjC.cpp.
References setARCRuntimeFunctionLinkage().
◆ shouldEmitSeparateBlockRetain()
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 2851 of file CGObjC.cpp.
References clang::CodeGen::CodeGenFunction::Builder, clang::BlockDecl::canAvoidCopyToHeap(), clang::cast(), clang::CodeGen::CodeGenFunction::ConvertType(), clang::CodeGen::CGBuilderTy::CreateBitCast(), clang::CodeGen::CodeGenFunction::EmitARCRetainBlock(), emitARCRetainCallResult(), clang::CodeGen::CodeGenFunction::EmitCheckedLValue(), clang::CodeGen::CodeGenFunction::EmitIgnoredExpr(), clang::CodeGen::CodeGenFunction::EmitScalarExpr(), clang::CodeGen::CodeGenFunction::EmitStoreThroughLValue(), clang::CodeGen::CodeGenFunction::EnsureInsertPoint(), clang::CodeGen::RValue::get(), clang::BlockExpr::getBlockDecl(), clang::CastExpr::getCastKind(), clang::BinaryOperator::getLHS(), clang::QualType::getObjCLifetime(), clang::BinaryOperator::getOpcode(), clang::PseudoObjectExpr::getResultExpr(), clang::BinaryOperator::getRHS(), clang::CastExpr::getSubExpr(), clang::Expr::getType(), clang::Type::hasPointerRepresentation(), clang::Expr::IgnoreParens(), clang::Type::isBlockPointerType(), clang::Qualifiers::OCL_Autoreleasing, clang::Qualifiers::OCL_ExplicitNone, clang::Qualifiers::OCL_None, clang::Qualifiers::OCL_Strong, clang::Qualifiers::OCL_Weak, clang::PseudoObjectExpr::semantics_begin(), clang::PseudoObjectExpr::semantics_end(), clang::CodeGen::CodeGenFunction::TCK_Store, tryEmitARCRetainLoadOfScalar(), and clang::CodeGen::Type.
Referenced by clang::CodeGen::CodeGenFunction::EmitARCExtendBlockObject().
◆ shouldExtendReceiverForInnerPointerMessage()
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Decide whether to extend the lifetime of the receiver of a returns-inner-pointer message.
Definition at line 284 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::Decl::hasAttr(), clang::VarDecl::hasLocalStorage(), clang::Expr::IgnoreParens(), clang::ObjCMessageExpr::Instance, clang::Qualifiers::OCL_Strong, clang::ObjCMessageExpr::SuperClass, and clang::ObjCMessageExpr::SuperInstance.
Referenced by clang::CodeGen::CodeGenFunction::EmitObjCMessageExpr().
◆ shouldRetainObjCLifetime()
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Definition at line 2687 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]
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Definition at line 2702 of file CGObjC.cpp.
References clang::CodeGen::CodeGenFunction::EmitARCLoadWeakRetained(), clang::CodeGen::CodeGenFunction::EmitLoadOfLValue(), clang::CodeGen::LValue::getAddress(), clang::QualType::getObjCLifetime(), clang::CodeGen::RValue::getScalarVal(), clang::Qualifiers::OCL_Weak, and shouldRetainObjCLifetime().
Referenced by emitARCRetainLoadOfScalar(), shouldEmitSeparateBlockRetain(), and tryEmitARCRetainLoadOfScalar().
◆ tryEmitARCRetainLoadOfScalar() [2/2]
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Definition at line 2716 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::QualType::getObjCLifetime(), clang::CodeGen::RValue::getScalarVal(), clang::Expr::getType(), clang::Expr::IgnoreParens(), clang::QualType::isConstQualified(), clang::QualType::isVolatileQualified(), clang::Expr::isXValue(), clang::Qualifiers::OCL_Strong, clang::Qualifiers::OCL_Weak, shouldRetainObjCLifetime(), tryEmitARCRetainLoadOfScalar(), clang::CodeGen::CodeGenFunction::tryEmitAsConstant(), and clang::ast_matchers::type.
◆ tryEmitARCRetainScalarExpr()
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Definition at line 3222 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()
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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 437 of file CGObjC.cpp.
References clang::CodeGen::CodeGenFunction::CGM, clang::ObjCMessageExpr::Class, clang::CodeGen::CodeGenFunction::ConvertType(), clang::CodeGen::CodeGenFunction::CurFuncDecl, clang::CodeGen::CodeGenFunction::EmitObjCAllocInit(), clang::CodeGen::CodeGenFunction::EmitScalarExpr(), clang::Type::getAs(), 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::Expr::isObjCSelfExpr(), clang::Selector::isUnarySelector(), and clang::LangOptions::ObjCRuntime.
Referenced by clang::CodeGen::CodeGenFunction::EmitObjCMessageExpr().
◆ tryGenerateSpecializedMessageSend()
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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 None and the caller can generate a msgSend instead.
Definition at line 371 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::getCodeGenOpts(), clang::CodeGen::CodeGenModule::getLangOpts(), clang::Selector::getMethodFamily(), clang::Selector::getNameForSlot(), clang::Selector::getNumArgs(), clang::Selector::isKeywordSelector(), clang::Type::isObjCObjectPointerType(), clang::Selector::isUnarySelector(), clang::Type::isVoidType(), clang::LangOptions::NonGC, clang::LangOptions::ObjCRuntime, clang::OMF_alloc, clang::OMF_autorelease, clang::OMF_release, and clang::OMF_retain.
Referenced by clang::CodeGen::CodeGenFunction::EmitObjCMessageExpr().
◆ UseOptimizedSetter()
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Definition at line 1304 of file CGObjC.cpp.
References clang::CodeGen::CodeGenModule::getLangOpts(), clang::ObjCRuntime::hasOptimizedSetter(), clang::LangOptions::NonGC, and clang::LangOptions::ObjCRuntime.
Referenced by clang::CodeGen::CodeGenFunction::generateObjCSetterBody().
