clang  mainline
Typedefs | Functions
CGObjC.cpp File Reference
#include "CGDebugInfo.h"
#include "CGObjCRuntime.h"
#include "CodeGenFunction.h"
#include "CodeGenModule.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/CallSite.h"
#include "llvm/IR/DataLayout.h"
#include "llvm/IR/InlineAsm.h"
Include dependency graph for CGObjC.cpp:

Go to the source code of this file.

Typedefs

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

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 (llvm::Value *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 llvm::ValueemitARCRetainLoadOfScalar (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 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, llvm::Value *addr, QualType type)
 Like CodeGenFunction::destroyARCStrong, but do it with a call.
static void emitCXXDestructMethod (CodeGenFunction &CGF, ObjCImplementationDecl *impl)
static llvm::Constant * createARCRuntimeFunction (CodeGenModule &CGM, llvm::FunctionType *type, StringRef fnName)
static llvm::ValueemitARCValueOperation (CodeGenFunction &CGF, llvm::Value *value, llvm::Constant *&fn, StringRef fnName, bool isTailCall=false)
 Perform an operation having the signature i8* (i8*) where a null input causes a no-op and returns null.
static llvm::ValueemitARCLoadOperation (CodeGenFunction &CGF, llvm::Value *addr, llvm::Constant *&fn, StringRef fnName)
 Perform an operation having the following signature: i8* (i8**)
static llvm::ValueemitARCStoreOperation (CodeGenFunction &CGF, llvm::Value *addr, llvm::Value *value, llvm::Constant *&fn, StringRef fnName, bool ignored)
 Perform an operation having the following signature: i8* (i8**, i8*)
static void emitARCCopyOperation (CodeGenFunction &CGF, llvm::Value *dst, llvm::Value *src, llvm::Constant *&fn, StringRef fnName)
 Perform an operation having the following signature: void (i8**, i8**)
static TryEmitResult tryEmitARCRetainLoadOfScalar (CodeGenFunction &CGF, LValue lvalue, QualType type)
static TryEmitResult tryEmitARCRetainLoadOfScalar (CodeGenFunction &CGF, const Expr *e)
static llvm::ValueemitARCRetainAfterCall (CodeGenFunction &CGF, llvm::Value *value)
static llvm::ValueemitARCRetainCall (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 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 TryEmitResult tryEmitARCRetainPseudoObject (CodeGenFunction &CGF, const PseudoObjectExpr *E)
 Try to emit a PseudoObjectExpr at +1.

Typedef Documentation

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

Definition at line 31 of file CGObjC.cpp.


Function Documentation

static RValue AdjustObjCObjectType ( CodeGenFunction CGF,
QualType  ExpT,
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 253 of file CGObjC.cpp.

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

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

static llvm::Constant* createARCRuntimeFunction ( CodeGenModule CGM,
llvm::FunctionType *  type,
StringRef  fnName 
) [static]
static void destroyARCStrongWithStore ( CodeGenFunction CGF,
llvm::Value addr,
QualType  type 
) [static]

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

Definition at line 1330 of file CGObjC.cpp.

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

Referenced by emitCXXDestructMethod().

static void emitARCCopyOperation ( CodeGenFunction CGF,
llvm::Value dst,
llvm::Value src,
llvm::Constant *&  fn,
StringRef  fnName 
) [static]
static llvm::Value* emitARCLoadOperation ( CodeGenFunction CGF,
llvm::Value addr,
llvm::Constant *&  fn,
StringRef  fnName 
) [static]
static llvm::Value * emitARCRetainAfterCall ( CodeGenFunction CGF,
llvm::Value value 
) [static]
static llvm::Value* emitARCRetainCall ( 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 2442 of file CGObjC.cpp.

References emitARCRetainAfterCall(), and clang::CodeGen::CodeGenFunction::EmitScalarExpr().

Referenced by tryEmitARCRetainScalarExpr().

static llvm::Value * emitARCRetainLoadOfScalar ( CodeGenFunction CGF,
LValue  lvalue,
QualType  type 
) [static]
static llvm::Value* emitARCStoreOperation ( CodeGenFunction CGF,
llvm::Value addr,
llvm::Value value,
llvm::Constant *&  fn,
StringRef  fnName,
bool  ignored 
) [static]
static llvm::Value* emitARCValueOperation ( CodeGenFunction CGF,
llvm::Value value,
llvm::Constant *&  fn,
StringRef  fnName,
bool  isTailCall = false 
) [static]
static void emitCPPObjectAtomicGetterCall ( CodeGenFunction CGF,
llvm::Value returnAddr,
ObjCIvarDecl ivar,
llvm::Constant *  AtomicHelperFn 
) [static]
static void emitCPPObjectAtomicSetterCall ( CodeGenFunction CGF,
ObjCMethodDecl OMD,
ObjCIvarDecl ivar,
llvm::Constant *  AtomicHelperFn 
) [static]
static void emitCXXDestructMethod ( CodeGenFunction CGF,
ObjCImplementationDecl impl 
) [static]
static void emitStructGetterCall ( CodeGenFunction CGF,
ObjCIvarDecl ivar,
bool  isAtomic,
bool  hasStrong 
) [static]
static void emitStructSetterCall ( CodeGenFunction CGF,
ObjCMethodDecl OMD,
ObjCIvarDecl ivar 
) [static]
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 576 of file CGObjC.cpp.

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

static llvm::Constant* getNullForVariable ( llvm::Value addr) [static]

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

Definition at line 40 of file CGObjC.cpp.

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

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

static bool hasTrivialGetExpr ( const ObjCPropertyImplDecl propImpl) [static]
static bool hasTrivialSetExpr ( const ObjCPropertyImplDecl PID) [static]
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 568 of file CGObjC.cpp.

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 2489 of file CGObjC.cpp.

References clang::CK_AnyPointerToBlockPointerCast, clang::CK_ARCConsumeObject, clang::CK_ARCProduceObject, clang::CK_ARCReclaimReturnedObject, clang::CK_BitCast, clang::CK_LValueToRValue, clang::CK_NoOp, clang::Expr::getType(), clang::Expr::IgnoreParens(), and clang::Type::isBlockPointerType().

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

static bool shouldExtendReceiverForInnerPointerMessage ( const ObjCMessageExpr message) [static]
static TryEmitResult tryEmitARCRetainLoadOfScalar ( CodeGenFunction CGF,
LValue  lvalue,
QualType  type 
) [static]
static TryEmitResult tryEmitARCRetainLoadOfScalar ( CodeGenFunction CGF,
const Expr e 
) [static]
static TryEmitResult tryEmitARCRetainPseudoObject ( CodeGenFunction CGF,
const PseudoObjectExpr E 
) [static]
static TryEmitResult tryEmitARCRetainScalarExpr ( CodeGenFunction CGF,
const Expr e 
) [static]
static bool UseOptimizedSetter ( CodeGenModule CGM) [static]