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Add bigger method type encodings to protocol objects. <rdar://problem/10492418>
The new metadata are method @encode strings with additional data. 1. Each Objective-C object is marked with its class name and protocol names. The same is done for property @encode already. 2. Each block object is marked with its function prototype's @encoding. For example, a method parameter that is a block object that itself returns void and takes an int would look like: @?<v@?i> These new method @encode strings are stored in a single array pointed to by structs protocol_t and objc_protocol_ext. Patch provided by Greg Parker! llvm-svn: 145469
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@ -1007,7 +1007,8 @@ public:
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///
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/// \returns true if an error occurred (e.g., because one of the parameter
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/// types is incomplete), false otherwise.
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bool getObjCEncodingForMethodDecl(const ObjCMethodDecl *Decl, std::string &S)
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bool getObjCEncodingForMethodDecl(const ObjCMethodDecl *Decl, std::string &S,
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bool Extended = false)
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const;
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/// getObjCEncodingForBlock - Return the encoded type for this block
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@ -1764,13 +1765,20 @@ private:
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const FieldDecl *Field,
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bool OutermostType = false,
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bool EncodingProperty = false,
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bool StructField = false) const;
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bool StructField = false,
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bool EncodeBlockParameters = false,
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bool EncodeClassNames = false) const;
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// Adds the encoding of the structure's members.
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void getObjCEncodingForStructureImpl(RecordDecl *RD, std::string &S,
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const FieldDecl *Field,
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bool includeVBases = true) const;
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// Adds the encoding of a method parameter or return type.
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void getObjCEncodingForMethodParameter(Decl::ObjCDeclQualifier QT,
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QualType T, std::string& S,
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bool Extended) const;
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const ASTRecordLayout &
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getObjCLayout(const ObjCInterfaceDecl *D,
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const ObjCImplementationDecl *Impl) const;
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@ -4080,15 +4080,32 @@ bool ASTContext::getObjCEncodingForFunctionDecl(const FunctionDecl *Decl,
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return false;
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}
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/// getObjCEncodingForMethodParameter - Return the encoded type for a single
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/// method parameter or return type. If Extended, include class names and
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/// block object types.
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void ASTContext::getObjCEncodingForMethodParameter(Decl::ObjCDeclQualifier QT,
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QualType T, std::string& S,
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bool Extended) const {
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// Encode type qualifer, 'in', 'inout', etc. for the parameter.
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getObjCEncodingForTypeQualifier(QT, S);
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// Encode parameter type.
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getObjCEncodingForTypeImpl(T, S, true, true, 0,
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true /*OutermostType*/,
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false /*EncodingProperty*/,
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false /*StructField*/,
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Extended /*EncodeBlockParameters*/,
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Extended /*EncodeClassNames*/);
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}
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/// getObjCEncodingForMethodDecl - Return the encoded type for this method
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/// declaration.
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bool ASTContext::getObjCEncodingForMethodDecl(const ObjCMethodDecl *Decl,
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std::string& S) const {
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std::string& S,
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bool Extended) const {
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// FIXME: This is not very efficient.
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// Encode type qualifer, 'in', 'inout', etc. for the return type.
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getObjCEncodingForTypeQualifier(Decl->getObjCDeclQualifier(), S);
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// Encode result type.
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getObjCEncodingForType(Decl->getResultType(), S);
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// Encode return type.
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getObjCEncodingForMethodParameter(Decl->getObjCDeclQualifier(),
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Decl->getResultType(), S, Extended);
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// Compute size of all parameters.
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// Start with computing size of a pointer in number of bytes.
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// FIXME: There might(should) be a better way of doing this computation!
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@ -4126,10 +4143,8 @@ bool ASTContext::getObjCEncodingForMethodDecl(const ObjCMethodDecl *Decl,
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PType = PVDecl->getType();
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} else if (PType->isFunctionType())
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PType = PVDecl->getType();
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// Process argument qualifiers for user supplied arguments; such as,
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// 'in', 'inout', etc.
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getObjCEncodingForTypeQualifier(PVDecl->getObjCDeclQualifier(), S);
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getObjCEncodingForType(PType, S);
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getObjCEncodingForMethodParameter(PVDecl->getObjCDeclQualifier(),
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PType, S, Extended);
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S += charUnitsToString(ParmOffset);
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ParmOffset += getObjCEncodingTypeSize(PType);
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}
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@ -4355,7 +4370,9 @@ void ASTContext::getObjCEncodingForTypeImpl(QualType T, std::string& S,
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const FieldDecl *FD,
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bool OutermostType,
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bool EncodingProperty,
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bool StructField) const {
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bool StructField,
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bool EncodeBlockParameters,
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bool EncodeClassNames) const {
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if (T->getAs<BuiltinType>()) {
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if (FD && FD->isBitField())
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return EncodeBitField(this, S, T, FD);
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@ -4534,8 +4551,40 @@ void ASTContext::getObjCEncodingForTypeImpl(QualType T, std::string& S,
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return;
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}
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if (T->isBlockPointerType()) {
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if (const BlockPointerType *BT = T->getAs<BlockPointerType>()) {
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S += "@?"; // Unlike a pointer-to-function, which is "^?".
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if (EncodeBlockParameters) {
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const FunctionType *FT = BT->getPointeeType()->getAs<FunctionType>();
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S += '<';
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// Block return type
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getObjCEncodingForTypeImpl(FT->getResultType(), S,
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ExpandPointedToStructures, ExpandStructures,
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FD,
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false /* OutermostType */,
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EncodingProperty,
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false /* StructField */,
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EncodeBlockParameters,
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EncodeClassNames);
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// Block self
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S += "@?";
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// Block parameters
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if (const FunctionProtoType *FPT = dyn_cast<FunctionProtoType>(FT)) {
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for (FunctionProtoType::arg_type_iterator I = FPT->arg_type_begin(),
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E = FPT->arg_type_end(); I && (I != E); ++I) {
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getObjCEncodingForTypeImpl(*I, S,
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ExpandPointedToStructures,
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ExpandStructures,
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FD,
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false /* OutermostType */,
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EncodingProperty,
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false /* StructField */,
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EncodeBlockParameters,
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EncodeClassNames);
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}
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}
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S += '>';
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}
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return;
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}
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@ -4581,7 +4630,7 @@ void ASTContext::getObjCEncodingForTypeImpl(QualType T, std::string& S,
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getObjCEncodingForTypeImpl(getObjCIdType(), S,
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ExpandPointedToStructures,
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ExpandStructures, FD);
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if (FD || EncodingProperty) {
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if (FD || EncodingProperty || EncodeClassNames) {
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// Note that we do extended encoding of protocol qualifer list
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// Only when doing ivar or property encoding.
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S += '"';
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@ -4610,7 +4659,8 @@ void ASTContext::getObjCEncodingForTypeImpl(QualType T, std::string& S,
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}
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S += '@';
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if (OPT->getInterfaceDecl() && (FD || EncodingProperty)) {
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if (OPT->getInterfaceDecl() &&
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(FD || EncodingProperty || EncodeClassNames)) {
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S += '"';
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S += OPT->getInterfaceDecl()->getIdentifier()->getName();
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for (ObjCObjectPointerType::qual_iterator I = OPT->qual_begin(),
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@ -175,7 +175,7 @@ protected:
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public:
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llvm::Type *ShortTy, *IntTy, *LongTy, *LongLongTy;
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llvm::Type *Int8PtrTy;
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llvm::Type *Int8PtrTy, *Int8PtrPtrTy;
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/// ObjectPtrTy - LLVM type for object handles (typeof(id))
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llvm::Type *ObjectPtrTy;
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@ -766,10 +766,11 @@ protected:
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llvm::Constant *GetMethodVarName(IdentifierInfo *Ident);
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/// GetMethodVarType - Return a unique constant for the given
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/// selector's name. The return value has type char *.
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/// method's type encoding string. The return value has type char *.
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// FIXME: This is a horrible name.
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llvm::Constant *GetMethodVarType(const ObjCMethodDecl *D);
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llvm::Constant *GetMethodVarType(const ObjCMethodDecl *D,
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bool Extended = false);
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llvm::Constant *GetMethodVarType(const FieldDecl *D);
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/// GetPropertyName - Return a unique constant for the given
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@ -816,6 +817,12 @@ protected:
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const ObjCContainerDecl *OCD,
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const ObjCCommonTypesHelper &ObjCTypes);
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/// EmitProtocolMethodTypes - Generate the array of extended method type
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/// strings. The return value has type Int8PtrPtrTy.
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llvm::Constant *EmitProtocolMethodTypes(Twine Name,
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const ConstantVector &MethodTypes,
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const ObjCCommonTypesHelper &ObjCTypes);
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/// PushProtocolProperties - Push protocol's property on the input stack.
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void PushProtocolProperties(llvm::SmallPtrSet<const IdentifierInfo*, 16> &PropertySet,
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std::vector<llvm::Constant*> &Properties,
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@ -985,7 +992,8 @@ private:
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llvm::Constant *
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EmitProtocolExtension(const ObjCProtocolDecl *PD,
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const ConstantVector &OptInstanceMethods,
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const ConstantVector &OptClassMethods);
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const ConstantVector &OptClassMethods,
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const ConstantVector &MethodTypesExt);
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/// EmitProtocolList - Generate the list of referenced
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/// protocols. The return value has type ProtocolListPtrTy.
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@ -1786,6 +1794,7 @@ llvm::Constant *CGObjCMac::GetOrEmitProtocol(const ObjCProtocolDecl *PD) {
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// Construct method lists.
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std::vector<llvm::Constant*> InstanceMethods, ClassMethods;
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std::vector<llvm::Constant*> OptInstanceMethods, OptClassMethods;
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std::vector<llvm::Constant*> MethodTypesExt, OptMethodTypesExt;
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for (ObjCProtocolDecl::instmeth_iterator
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i = PD->instmeth_begin(), e = PD->instmeth_end(); i != e; ++i) {
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ObjCMethodDecl *MD = *i;
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@ -1795,8 +1804,10 @@ llvm::Constant *CGObjCMac::GetOrEmitProtocol(const ObjCProtocolDecl *PD) {
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if (MD->getImplementationControl() == ObjCMethodDecl::Optional) {
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OptInstanceMethods.push_back(C);
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OptMethodTypesExt.push_back(GetMethodVarType(MD, true));
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} else {
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InstanceMethods.push_back(C);
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MethodTypesExt.push_back(GetMethodVarType(MD, true));
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}
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}
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@ -1809,13 +1820,19 @@ llvm::Constant *CGObjCMac::GetOrEmitProtocol(const ObjCProtocolDecl *PD) {
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if (MD->getImplementationControl() == ObjCMethodDecl::Optional) {
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OptClassMethods.push_back(C);
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OptMethodTypesExt.push_back(GetMethodVarType(MD, true));
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} else {
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ClassMethods.push_back(C);
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MethodTypesExt.push_back(GetMethodVarType(MD, true));
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}
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}
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MethodTypesExt.insert(MethodTypesExt.end(),
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OptMethodTypesExt.begin(), OptMethodTypesExt.end());
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llvm::Constant *Values[] = {
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EmitProtocolExtension(PD, OptInstanceMethods, OptClassMethods),
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EmitProtocolExtension(PD, OptInstanceMethods, OptClassMethods,
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MethodTypesExt),
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GetClassName(PD->getIdentifier()),
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EmitProtocolList("\01L_OBJC_PROTOCOL_REFS_" + PD->getName(),
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PD->protocol_begin(),
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@ -1875,12 +1892,14 @@ llvm::Constant *CGObjCMac::GetOrEmitProtocolRef(const ObjCProtocolDecl *PD) {
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struct objc_method_description_list *optional_instance_methods;
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struct objc_method_description_list *optional_class_methods;
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struct objc_property_list *instance_properties;
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const char ** extendedMethodTypes;
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};
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*/
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llvm::Constant *
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CGObjCMac::EmitProtocolExtension(const ObjCProtocolDecl *PD,
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const ConstantVector &OptInstanceMethods,
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const ConstantVector &OptClassMethods) {
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const ConstantVector &OptClassMethods,
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const ConstantVector &MethodTypesExt) {
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uint64_t Size =
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CGM.getTargetData().getTypeAllocSize(ObjCTypes.ProtocolExtensionTy);
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llvm::Constant *Values[] = {
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@ -1893,12 +1912,14 @@ CGObjCMac::EmitProtocolExtension(const ObjCProtocolDecl *PD,
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"__OBJC,__cat_cls_meth,regular,no_dead_strip",
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OptClassMethods),
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EmitPropertyList("\01L_OBJC_$_PROP_PROTO_LIST_" + PD->getName(), 0, PD,
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ObjCTypes)
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ObjCTypes),
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EmitProtocolMethodTypes("\01L_OBJC_PROTOCOL_METHOD_TYPES_" + PD->getName(),
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MethodTypesExt, ObjCTypes)
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};
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// Return null if no extension bits are used.
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if (Values[1]->isNullValue() && Values[2]->isNullValue() &&
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Values[3]->isNullValue())
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Values[3]->isNullValue() && Values[4]->isNullValue())
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return llvm::Constant::getNullValue(ObjCTypes.ProtocolExtensionPtrTy);
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llvm::Constant *Init =
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@ -2037,6 +2058,25 @@ llvm::Constant *CGObjCCommonMac::EmitPropertyList(Twine Name,
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return llvm::ConstantExpr::getBitCast(GV, ObjCTypes.PropertyListPtrTy);
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}
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llvm::Constant *CGObjCCommonMac::EmitProtocolMethodTypes(Twine Name,
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const ConstantVector &MethodTypes,
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const ObjCCommonTypesHelper &ObjCTypes) {
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// Return null for empty list.
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if (MethodTypes.empty())
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return llvm::Constant::getNullValue(ObjCTypes.Int8PtrPtrTy);
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llvm::ArrayType *AT = llvm::ArrayType::get(ObjCTypes.Int8PtrTy,
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MethodTypes.size());
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llvm::Constant *Init = llvm::ConstantArray::get(AT, MethodTypes);
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llvm::GlobalVariable *GV =
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CreateMetadataVar(Name, Init,
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(ObjCABI == 2) ? "__DATA, __objc_const" : 0,
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(ObjCABI == 2) ? 8 : 4,
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true);
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return llvm::ConstantExpr::getBitCast(GV, ObjCTypes.Int8PtrPtrTy);
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}
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/*
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struct objc_method_description_list {
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int count;
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@ -4024,11 +4064,12 @@ llvm::Constant *CGObjCCommonMac::GetMethodVarType(const FieldDecl *Field) {
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return getConstantGEP(VMContext, Entry, 0, 0);
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}
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llvm::Constant *CGObjCCommonMac::GetMethodVarType(const ObjCMethodDecl *D) {
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llvm::Constant *CGObjCCommonMac::GetMethodVarType(const ObjCMethodDecl *D,
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bool Extended) {
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std::string TypeStr;
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if (CGM.getContext().getObjCEncodingForMethodDecl(
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const_cast<ObjCMethodDecl*>(D),
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TypeStr))
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TypeStr, Extended))
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return 0;
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llvm::GlobalVariable *&Entry = MethodVarTypes[TypeStr];
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@ -4152,6 +4193,7 @@ ObjCCommonTypesHelper::ObjCCommonTypesHelper(CodeGen::CodeGenModule &cgm)
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LongTy = Types.ConvertType(Ctx.LongTy);
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LongLongTy = Types.ConvertType(Ctx.LongLongTy);
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Int8PtrTy = llvm::Type::getInt8PtrTy(VMContext);
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Int8PtrPtrTy = llvm::PointerType::getUnqual(Int8PtrTy);
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ObjectPtrTy = Types.ConvertType(Ctx.getObjCIdType());
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PtrObjectPtrTy = llvm::PointerType::getUnqual(ObjectPtrTy);
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@ -4253,12 +4295,13 @@ ObjCTypesHelper::ObjCTypesHelper(CodeGen::CodeGenModule &cgm)
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// struct _objc_method_description_list *optional_instance_methods;
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// struct _objc_method_description_list *optional_class_methods;
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// struct _objc_property_list *instance_properties;
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// const char ** extendedMethodTypes;
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// }
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ProtocolExtensionTy =
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llvm::StructType::create("struct._objc_protocol_extension",
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IntTy, MethodDescriptionListPtrTy,
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MethodDescriptionListPtrTy, PropertyListPtrTy,
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NULL);
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Int8PtrPtrTy, NULL);
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// struct _objc_protocol_extension *
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ProtocolExtensionPtrTy = llvm::PointerType::getUnqual(ProtocolExtensionTy);
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@ -4431,6 +4474,7 @@ ObjCNonFragileABITypesHelper::ObjCNonFragileABITypesHelper(CodeGen::CodeGenModul
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// const struct _prop_list_t * properties;
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// const uint32_t size; // sizeof(struct _protocol_t)
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// const uint32_t flags; // = 0
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// const char ** extendedMethodTypes;
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// }
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// Holder for struct _protocol_list_t *
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@ -4442,7 +4486,8 @@ ObjCNonFragileABITypesHelper::ObjCNonFragileABITypesHelper(CodeGen::CodeGenModul
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llvm::PointerType::getUnqual(ProtocolListnfABITy),
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MethodListnfABIPtrTy, MethodListnfABIPtrTy,
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MethodListnfABIPtrTy, MethodListnfABIPtrTy,
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PropertyListPtrTy, IntTy, IntTy, NULL);
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PropertyListPtrTy, IntTy, IntTy, Int8PtrPtrTy,
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NULL);
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// struct _protocol_t*
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ProtocolnfABIPtrTy = llvm::PointerType::getUnqual(ProtocolnfABITy);
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@ -5353,6 +5398,7 @@ llvm::Constant *CGObjCNonFragileABIMac::GetOrEmitProtocolRef(
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/// const struct _prop_list_t * properties;
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/// const uint32_t size; // sizeof(struct _protocol_t)
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/// const uint32_t flags; // = 0
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/// const char ** extendedMethodTypes;
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/// }
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/// @endcode
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///
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@ -5368,6 +5414,7 @@ llvm::Constant *CGObjCNonFragileABIMac::GetOrEmitProtocol(
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// Construct method lists.
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std::vector<llvm::Constant*> InstanceMethods, ClassMethods;
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std::vector<llvm::Constant*> OptInstanceMethods, OptClassMethods;
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std::vector<llvm::Constant*> MethodTypesExt, OptMethodTypesExt;
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for (ObjCProtocolDecl::instmeth_iterator
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i = PD->instmeth_begin(), e = PD->instmeth_end(); i != e; ++i) {
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ObjCMethodDecl *MD = *i;
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@ -5377,8 +5424,10 @@ llvm::Constant *CGObjCNonFragileABIMac::GetOrEmitProtocol(
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if (MD->getImplementationControl() == ObjCMethodDecl::Optional) {
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OptInstanceMethods.push_back(C);
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OptMethodTypesExt.push_back(GetMethodVarType(MD, true));
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} else {
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InstanceMethods.push_back(C);
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MethodTypesExt.push_back(GetMethodVarType(MD, true));
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}
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}
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@ -5391,12 +5440,17 @@ llvm::Constant *CGObjCNonFragileABIMac::GetOrEmitProtocol(
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if (MD->getImplementationControl() == ObjCMethodDecl::Optional) {
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OptClassMethods.push_back(C);
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OptMethodTypesExt.push_back(GetMethodVarType(MD, true));
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} else {
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ClassMethods.push_back(C);
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MethodTypesExt.push_back(GetMethodVarType(MD, true));
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}
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}
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llvm::Constant *Values[10];
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MethodTypesExt.insert(MethodTypesExt.end(),
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OptMethodTypesExt.begin(), OptMethodTypesExt.end());
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llvm::Constant *Values[11];
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// isa is NULL
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Values[0] = llvm::Constant::getNullValue(ObjCTypes.ObjectPtrTy);
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Values[1] = GetClassName(PD->getIdentifier());
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@ -5426,6 +5480,9 @@ llvm::Constant *CGObjCNonFragileABIMac::GetOrEmitProtocol(
|
||||
CGM.getTargetData().getTypeAllocSize(ObjCTypes.ProtocolnfABITy);
|
||||
Values[8] = llvm::ConstantInt::get(ObjCTypes.IntTy, Size);
|
||||
Values[9] = llvm::Constant::getNullValue(ObjCTypes.IntTy);
|
||||
Values[10] = EmitProtocolMethodTypes("\01l_OBJC_$_PROTOCOL_METHOD_TYPES_"
|
||||
+ PD->getName(),
|
||||
MethodTypesExt, ObjCTypes);
|
||||
llvm::Constant *Init = llvm::ConstantStruct::get(ObjCTypes.ProtocolnfABITy,
|
||||
Values);
|
||||
|
||||
|
Loading…
Reference in New Issue
Block a user