diff options
Diffstat (limited to 'include/llvm/DerivedTypes.h')
| -rw-r--r-- | include/llvm/DerivedTypes.h | 221 |
1 files changed, 89 insertions, 132 deletions
diff --git a/include/llvm/DerivedTypes.h b/include/llvm/DerivedTypes.h index fe9f5f8..acb28de 100644 --- a/include/llvm/DerivedTypes.h +++ b/include/llvm/DerivedTypes.h @@ -24,71 +24,22 @@ namespace llvm { class Value; -template<class ValType, class TypeClass> class TypeMap; -class FunctionValType; -class ArrayValType; -class StructValType; -class PointerValType; -class VectorValType; -class IntegerValType; class APInt; class LLVMContext; template<typename T> class ArrayRef; - -class DerivedType : public Type { - friend class Type; - -protected: - explicit DerivedType(LLVMContext &C, TypeID id) : Type(C, id) {} - - /// notifyUsesThatTypeBecameConcrete - Notify AbstractTypeUsers of this type - /// that the current type has transitioned from being abstract to being - /// concrete. - /// - void notifyUsesThatTypeBecameConcrete(); - - /// dropAllTypeUses - When this (abstract) type is resolved to be equal to - /// another (more concrete) type, we must eliminate all references to other - /// types, to avoid some circular reference problems. - /// - void dropAllTypeUses(); - -public: - - //===--------------------------------------------------------------------===// - // Abstract Type handling methods - These types have special lifetimes, which - // are managed by (add|remove)AbstractTypeUser. See comments in - // AbstractTypeUser.h for more information. - - /// refineAbstractTypeTo - This function is used to when it is discovered that - /// the 'this' abstract type is actually equivalent to the NewType specified. - /// This causes all users of 'this' to switch to reference the more concrete - /// type NewType and for 'this' to be deleted. - /// - void refineAbstractTypeTo(const Type *NewType); - - void dump() const { Type::dump(); } - - // Methods for support type inquiry through isa, cast, and dyn_cast. - static inline bool classof(const DerivedType *) { return true; } - static inline bool classof(const Type *T) { - return T->isDerivedType(); - } -}; +class StringRef; /// Class to represent integer types. Note that this class is also used to /// represent the built-in integer types: Int1Ty, Int8Ty, Int16Ty, Int32Ty and /// Int64Ty. /// @brief Integer representation type -class IntegerType : public DerivedType { +class IntegerType : public Type { friend class LLVMContextImpl; protected: - explicit IntegerType(LLVMContext &C, unsigned NumBits) : - DerivedType(C, IntegerTyID) { + explicit IntegerType(LLVMContext &C, unsigned NumBits) : Type(C, IntegerTyID){ setSubclassData(NumBits); } - friend class TypeMap<IntegerValType, IntegerType>; public: /// This enum is just used to hold constants we need for IntegerType. enum { @@ -103,7 +54,7 @@ public: /// that instance will be returned. Otherwise a new one will be created. Only /// one instance with a given NumBits value is ever created. /// @brief Get or create an IntegerType instance. - static const IntegerType *get(LLVMContext &C, unsigned NumBits); + static IntegerType *get(LLVMContext &C, unsigned NumBits); /// @brief Get the number of bits in this IntegerType unsigned getBitWidth() const { return getSubclassData(); } @@ -142,19 +93,17 @@ public: /// FunctionType - Class to represent function types /// -class FunctionType : public DerivedType { - friend class TypeMap<FunctionValType, FunctionType>; +class FunctionType : public Type { FunctionType(const FunctionType &); // Do not implement const FunctionType &operator=(const FunctionType &); // Do not implement - FunctionType(const Type *Result, ArrayRef<const Type*> Params, - bool IsVarArgs); + FunctionType(const Type *Result, ArrayRef<Type*> Params, bool IsVarArgs); public: /// FunctionType::get - This static method is the primary way of constructing /// a FunctionType. /// static FunctionType *get(const Type *Result, - ArrayRef<const Type*> Params, bool isVarArg); + ArrayRef<Type*> Params, bool isVarArg); /// FunctionType::get - Create a FunctionType taking no parameters. /// @@ -169,24 +118,20 @@ public: static bool isValidArgumentType(const Type *ArgTy); bool isVarArg() const { return getSubclassData(); } - const Type *getReturnType() const { return ContainedTys[0]; } + Type *getReturnType() const { return ContainedTys[0]; } typedef Type::subtype_iterator param_iterator; param_iterator param_begin() const { return ContainedTys + 1; } param_iterator param_end() const { return &ContainedTys[NumContainedTys]; } // Parameter type accessors. - const Type *getParamType(unsigned i) const { return ContainedTys[i+1]; } + Type *getParamType(unsigned i) const { return ContainedTys[i+1]; } /// getNumParams - Return the number of fixed parameters this function type /// requires. This does not consider varargs. /// unsigned getNumParams() const { return NumContainedTys - 1; } - // Implement the AbstractTypeUser interface. - virtual void refineAbstractType(const DerivedType *OldTy, const Type *NewTy); - virtual void typeBecameConcrete(const DerivedType *AbsTy); - // Methods for support type inquiry through isa, cast, and dyn_cast. static inline bool classof(const FunctionType *) { return true; } static inline bool classof(const Type *T) { @@ -197,16 +142,16 @@ public: /// CompositeType - Common super class of ArrayType, StructType, PointerType /// and VectorType. -class CompositeType : public DerivedType { +class CompositeType : public Type { protected: - explicit CompositeType(LLVMContext &C, TypeID tid) : DerivedType(C, tid) { } + explicit CompositeType(LLVMContext &C, TypeID tid) : Type(C, tid) { } public: /// getTypeAtIndex - Given an index value into the type, return the type of /// the element. /// - const Type *getTypeAtIndex(const Value *V) const; - const Type *getTypeAtIndex(unsigned Idx) const; + Type *getTypeAtIndex(const Value *V) const; + Type *getTypeAtIndex(unsigned Idx) const; bool indexValid(const Value *V) const; bool indexValid(unsigned Idx) const; @@ -222,17 +167,48 @@ public: /// StructType - Class to represent struct types, both normal and packed. +/// Besides being optionally packed, structs can be either "anonymous" or may +/// have an identity. Anonymous structs are uniqued by structural equivalence, +/// but types are each unique when created, and optionally have a name. /// class StructType : public CompositeType { - friend class TypeMap<StructValType, StructType>; StructType(const StructType &); // Do not implement const StructType &operator=(const StructType &); // Do not implement - StructType(LLVMContext &C, ArrayRef<const Type*> Types, bool isPacked); + StructType(LLVMContext &C) + : CompositeType(C, StructTyID), SymbolTableEntry(0) {} + enum { + // This is the contents of the SubClassData field. + SCDB_HasBody = 1, + SCDB_Packed = 2, + SCDB_IsAnonymous = 4 + }; + + /// SymbolTableEntry - For a named struct that actually has a name, this is a + /// pointer to the symbol table entry (maintained by LLVMContext) for the + /// struct. This is null if the type is an anonymous struct or if it is + /// a named type that has an empty name. + /// + void *SymbolTableEntry; public: + ~StructType() { + delete [] ContainedTys; // Delete the body. + } + + /// StructType::createNamed - This creates a named struct with no body + /// specified. If the name is empty, it creates an unnamed struct, which has + /// a unique identity but no actual name. + static StructType *createNamed(LLVMContext &Context, StringRef Name); + + static StructType *createNamed(StringRef Name, ArrayRef<Type*> Elements, + bool isPacked = false); + static StructType *createNamed(LLVMContext &Context, StringRef Name, + ArrayRef<Type*> Elements, + bool isPacked = false); + static StructType *createNamed(StringRef Name, Type *elt1, ...) END_WITH_NULL; + /// StructType::get - This static method is the primary way to create a /// StructType. - /// - static StructType *get(LLVMContext &Context, ArrayRef<const Type*> Elements, + static StructType *get(LLVMContext &Context, ArrayRef<Type*> Elements, bool isPacked = false); /// StructType::get - Create an empty structure type. @@ -243,13 +219,39 @@ public: /// structure types by specifying the elements as arguments. Note that this /// method always returns a non-packed struct, and requires at least one /// element type. - static StructType *get(const Type *elt1, ...) END_WITH_NULL; + static StructType *get(Type *elt1, ...) END_WITH_NULL; + bool isPacked() const { return (getSubclassData() & SCDB_Packed) != 0; } + + /// isAnonymous - Return true if this type is uniqued by structural + /// equivalence, false if it has an identity. + bool isAnonymous() const {return (getSubclassData() & SCDB_IsAnonymous) != 0;} + + /// isOpaque - Return true if this is a type with an identity that has no body + /// specified yet. These prints as 'opaque' in .ll files. + bool isOpaque() const { return (getSubclassData() & SCDB_HasBody) == 0; } + + /// hasName - Return true if this is a named struct that has a non-empty name. + bool hasName() const { return SymbolTableEntry != 0; } + + /// getName - Return the name for this struct type if it has an identity. + /// This may return an empty string for an unnamed struct type. Do not call + /// this on an anonymous type. + StringRef getName() const; + + /// setName - Change the name of this type to the specified name, or to a name + /// with a suffix if there is a collision. Do not call this on an anonymous + /// type. + void setName(StringRef Name); + + /// setBody - Specify a body for an opaque type. + void setBody(ArrayRef<Type*> Elements, bool isPacked = false); + void setBody(Type *elt1, ...) END_WITH_NULL; + /// isValidElementType - Return true if the specified type is valid as a /// element type. static bool isValidElementType(const Type *ElemTy); - - bool isPacked() const { return getSubclassData() != 0 ? true : false; } + // Iterator access to the elements. typedef Type::subtype_iterator element_iterator; @@ -258,22 +260,15 @@ public: /// isLayoutIdentical - Return true if this is layout identical to the /// specified struct. - bool isLayoutIdentical(const StructType *Other) const { - return this == Other; - } - + bool isLayoutIdentical(const StructType *Other) const; // Random access to the elements unsigned getNumElements() const { return NumContainedTys; } - const Type *getElementType(unsigned N) const { + Type *getElementType(unsigned N) const { assert(N < NumContainedTys && "Element number out of range!"); return ContainedTys[N]; } - // Implement the AbstractTypeUser interface. - virtual void refineAbstractType(const DerivedType *OldTy, const Type *NewTy); - virtual void typeBecameConcrete(const DerivedType *AbsTy); - // Methods for support type inquiry through isa, cast, and dyn_cast. static inline bool classof(const StructType *) { return true; } static inline bool classof(const Type *T) { @@ -290,21 +285,19 @@ public: /// components out in memory identically. /// class SequentialType : public CompositeType { - PATypeHandle ContainedType; ///< Storage for the single contained type. + Type *ContainedType; ///< Storage for the single contained type. SequentialType(const SequentialType &); // Do not implement! const SequentialType &operator=(const SequentialType &); // Do not implement! - // avoiding warning: 'this' : used in base member initializer list - SequentialType *this_() { return this; } protected: - SequentialType(TypeID TID, const Type *ElType) - : CompositeType(ElType->getContext(), TID), ContainedType(ElType, this_()) { + SequentialType(TypeID TID, Type *ElType) + : CompositeType(ElType->getContext(), TID), ContainedType(ElType) { ContainedTys = &ContainedType; NumContainedTys = 1; } public: - const Type *getElementType() const { return ContainedTys[0]; } + Type *getElementType() const { return ContainedTys[0]; } // Methods for support type inquiry through isa, cast, and dyn_cast. static inline bool classof(const SequentialType *) { return true; } @@ -319,12 +312,11 @@ public: /// ArrayType - Class to represent array types. /// class ArrayType : public SequentialType { - friend class TypeMap<ArrayValType, ArrayType>; uint64_t NumElements; ArrayType(const ArrayType &); // Do not implement const ArrayType &operator=(const ArrayType &); // Do not implement - ArrayType(const Type *ElType, uint64_t NumEl); + ArrayType(Type *ElType, uint64_t NumEl); public: /// ArrayType::get - This static method is the primary way to construct an /// ArrayType @@ -337,10 +329,6 @@ public: uint64_t getNumElements() const { return NumElements; } - // Implement the AbstractTypeUser interface. - virtual void refineAbstractType(const DerivedType *OldTy, const Type *NewTy); - virtual void typeBecameConcrete(const DerivedType *AbsTy); - // Methods for support type inquiry through isa, cast, and dyn_cast. static inline bool classof(const ArrayType *) { return true; } static inline bool classof(const Type *T) { @@ -351,12 +339,11 @@ public: /// VectorType - Class to represent vector types. /// class VectorType : public SequentialType { - friend class TypeMap<VectorValType, VectorType>; unsigned NumElements; VectorType(const VectorType &); // Do not implement const VectorType &operator=(const VectorType &); // Do not implement - VectorType(const Type *ElType, unsigned NumEl); + VectorType(Type *ElType, unsigned NumEl); public: /// VectorType::get - This static method is the primary way to construct an /// VectorType. @@ -369,7 +356,7 @@ public: /// static VectorType *getInteger(const VectorType *VTy) { unsigned EltBits = VTy->getElementType()->getPrimitiveSizeInBits(); - const Type *EltTy = IntegerType::get(VTy->getContext(), EltBits); + Type *EltTy = IntegerType::get(VTy->getContext(), EltBits); return VectorType::get(EltTy, VTy->getNumElements()); } @@ -379,7 +366,7 @@ public: /// static VectorType *getExtendedElementVectorType(const VectorType *VTy) { unsigned EltBits = VTy->getElementType()->getPrimitiveSizeInBits(); - const Type *EltTy = IntegerType::get(VTy->getContext(), EltBits * 2); + Type *EltTy = IntegerType::get(VTy->getContext(), EltBits * 2); return VectorType::get(EltTy, VTy->getNumElements()); } @@ -391,7 +378,7 @@ public: unsigned EltBits = VTy->getElementType()->getPrimitiveSizeInBits(); assert((EltBits & 1) == 0 && "Cannot truncate vector element with odd bit-width"); - const Type *EltTy = IntegerType::get(VTy->getContext(), EltBits / 2); + Type *EltTy = IntegerType::get(VTy->getContext(), EltBits / 2); return VectorType::get(EltTy, VTy->getNumElements()); } @@ -407,10 +394,6 @@ public: return NumElements * getElementType()->getPrimitiveSizeInBits(); } - // Implement the AbstractTypeUser interface. - virtual void refineAbstractType(const DerivedType *OldTy, const Type *NewTy); - virtual void typeBecameConcrete(const DerivedType *AbsTy); - // Methods for support type inquiry through isa, cast, and dyn_cast. static inline bool classof(const VectorType *) { return true; } static inline bool classof(const Type *T) { @@ -422,11 +405,9 @@ public: /// PointerType - Class to represent pointers. /// class PointerType : public SequentialType { - friend class TypeMap<PointerValType, PointerType>; - PointerType(const PointerType &); // Do not implement const PointerType &operator=(const PointerType &); // Do not implement - explicit PointerType(const Type *ElType, unsigned AddrSpace); + explicit PointerType(Type *ElType, unsigned AddrSpace); public: /// PointerType::get - This constructs a pointer to an object of the specified /// type in a numbered address space. @@ -445,10 +426,6 @@ public: /// @brief Return the address space of the Pointer type. inline unsigned getAddressSpace() const { return getSubclassData(); } - // Implement the AbstractTypeUser interface. - virtual void refineAbstractType(const DerivedType *OldTy, const Type *NewTy); - virtual void typeBecameConcrete(const DerivedType *AbsTy); - // Implement support type inquiry through isa, cast, and dyn_cast. static inline bool classof(const PointerType *) { return true; } static inline bool classof(const Type *T) { @@ -456,26 +433,6 @@ public: } }; - -/// OpaqueType - Class to represent opaque types. -/// -class OpaqueType : public DerivedType { - friend class LLVMContextImpl; - OpaqueType(const OpaqueType &); // DO NOT IMPLEMENT - const OpaqueType &operator=(const OpaqueType &); // DO NOT IMPLEMENT - OpaqueType(LLVMContext &C); -public: - /// OpaqueType::get - Static factory method for the OpaqueType class. - /// - static OpaqueType *get(LLVMContext &C); - - // Implement support for type inquiry through isa, cast, and dyn_cast. - static inline bool classof(const OpaqueType *) { return true; } - static inline bool classof(const Type *T) { - return T->getTypeID() == OpaqueTyID; - } -}; - } // End llvm namespace #endif |