X-Git-Url: http://demsky.eecs.uci.edu/git/?a=blobdiff_plain;f=include%2Fllvm%2FDerivedTypes.h;h=6068b8c337fb1c7887e66c2a19065b40ecde1212;hb=b09c146b116359616f6cbd4c8b3328607e00ff42;hp=c1e3a98a04d15df0e06df9533aa5d8ea18bf124e;hpb=c10305743c313558405079452138f03124e87581;p=oota-llvm.git diff --git a/include/llvm/DerivedTypes.h b/include/llvm/DerivedTypes.h index c1e3a98a04d..6068b8c337f 100644 --- a/include/llvm/DerivedTypes.h +++ b/include/llvm/DerivedTypes.h @@ -2,14 +2,14 @@ // // The LLVM Compiler Infrastructure // -// This file was developed by the LLVM research group and is distributed under -// the University of Illinois Open Source License. See LICENSE.TXT for details. +// This file is distributed under the University of Illinois Open Source +// License. See LICENSE.TXT for details. // //===----------------------------------------------------------------------===// // // This file contains the declarations of classes that represent "derived // types". These are things like "arrays of x" or "structure of x, y, z" or -// "method returning x taking (y,z) as parameters", etc... +// "function returning x taking (y,z) as parameters", etc... // // The implementations of these classes live in the Type.cpp file. // @@ -18,70 +18,29 @@ #ifndef LLVM_DERIVED_TYPES_H #define LLVM_DERIVED_TYPES_H +#include "llvm/Support/Compiler.h" +#include "llvm/Support/DataTypes.h" #include "llvm/Type.h" namespace llvm { class Value; -template class TypeMap; -class FunctionValType; -class ArrayValType; -class StructValType; -class PointerValType; -class PackedValType; -class IntegerValType; - -class DerivedType : public Type { - friend class Type; - -protected: - DerivedType(TypeID id) : Type(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 *T) { return true; } - static inline bool classof(const Type *T) { - return T->isDerivedType(); - } -}; +class APInt; +class LLVMContext; +template class ArrayRef; +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. +/// Int64Ty. /// @brief Integer representation type -class IntegerType : public DerivedType { +class IntegerType : public Type { + friend class LLVMContextImpl; + protected: - IntegerType(unsigned NumBits) : DerivedType(IntegerTyID) { + explicit IntegerType(LLVMContext &C, unsigned NumBits) : Type(C, IntegerTyID){ setSubclassData(NumBits); } - friend class TypeMap; public: /// This enum is just used to hold constants we need for IntegerType. enum { @@ -91,31 +50,41 @@ public: ///< which has 23 bits. This yields a maximum bit width of 8,388,607 bits. }; - /// This static method is the primary way of constructing an IntegerType. + /// This static method is the primary way of constructing an IntegerType. /// If an IntegerType with the same NumBits value was previously instantiated, /// 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(unsigned NumBits); + static IntegerType *get(LLVMContext &C, unsigned NumBits); /// @brief Get the number of bits in this IntegerType unsigned getBitWidth() const { return getSubclassData(); } /// getBitMask - Return a bitmask with ones set for all of the bits /// that can be set by an unsigned version of this type. This is 0xFF for - /// sbyte/ubyte, 0xFFFF for shorts, etc. + /// i8, 0xFFFF for i16, etc. uint64_t getBitMask() const { - return ~uint64_t(0UL) >> (64-getPrimitiveSizeInBits()); + return ~uint64_t(0UL) >> (64-getBitWidth()); + } + + /// getSignBit - Return a uint64_t with just the most significant bit set (the + /// sign bit, if the value is treated as a signed number). + uint64_t getSignBit() const { + return 1ULL << (getBitWidth()-1); } + /// For example, this is 0xFF for an 8 bit integer, 0xFFFF for i16, etc. + /// @returns a bit mask with ones set for all the bits of this type. + /// @brief Get a bit mask for this type. + APInt getMask() const; + /// This method determines if the width of this IntegerType is a power-of-2 - /// in terms of 8 bit bytes. + /// in terms of 8 bit bytes. /// @returns true if this is a power-of-2 byte width. /// @brief Is this a power-of-2 byte-width IntegerType ? bool isPowerOf2ByteWidth() const; - // Methods for support type inquiry through isa, cast, and dyn_cast: - static inline bool classof(const IntegerType *T) { return true; } + // Methods for support type inquiry through isa, cast, and dyn_cast. static inline bool classof(const Type *T) { return T->getTypeID() == IntegerTyID; } @@ -124,83 +93,46 @@ public: /// FunctionType - Class to represent function types /// -class FunctionType : public DerivedType { -public: - /// Function parameters can have attributes to indicate how they should be - /// treated by optimizations and code generation. This enumeration lists the - /// set of possible attributes. - /// @brief Function parameter attributes enumeration. - enum ParameterAttributes { - NoAttributeSet = 0, ///< No attribute value has been set - ZExtAttribute = 1, ///< zero extended before/after call - SExtAttribute = 1 << 1, ///< sign extended before/after call - NoReturnAttribute = 1 << 2 ///< mark the function as not returning - }; - typedef std::vector ParamAttrsList; -private: - friend class TypeMap; - bool isVarArgs; - ParamAttrsList *ParamAttrs; - - FunctionType(const FunctionType &); // Do not implement - const FunctionType &operator=(const FunctionType &); // Do not implement - FunctionType(const Type *Result, const std::vector &Params, - bool IsVarArgs, const ParamAttrsList &Attrs); +class FunctionType : public Type { + FunctionType(const FunctionType &) LLVM_DELETED_FUNCTION; + const FunctionType &operator=(const FunctionType &) LLVM_DELETED_FUNCTION; + FunctionType(Type *Result, ArrayRef Params, bool IsVarArgs); public: /// FunctionType::get - This static method is the primary way of constructing - /// a FunctionType. + /// a FunctionType. /// - static FunctionType *get( - const Type *Result, ///< The result type - const std::vector &Params, ///< The types of the parameters - bool isVarArg, ///< Whether this is a variable argument length function - const ParamAttrsList & Attrs = ParamAttrsList() - ///< Indicates the parameter attributes to use, if any. The 0th entry - ///< in the list refers to the return type. Parameters are numbered - ///< starting at 1. - ); - - inline bool isVarArg() const { return isVarArgs; } - inline const Type *getReturnType() const { return ContainedTys[0]; } - - typedef std::vector::const_iterator param_iterator; - param_iterator param_begin() const { return ContainedTys.begin()+1; } - param_iterator param_end() const { return ContainedTys.end(); } - - // Parameter type accessors... - const Type *getParamType(unsigned i) const { return ContainedTys[i+1]; } + static FunctionType *get(Type *Result, + ArrayRef Params, bool isVarArg); - /// getNumParams - Return the number of fixed parameters this function type - /// requires. This does not consider varargs. + /// FunctionType::get - Create a FunctionType taking no parameters. /// - unsigned getNumParams() const { return unsigned(ContainedTys.size()-1); } + static FunctionType *get(Type *Result, bool isVarArg); + + /// isValidReturnType - Return true if the specified type is valid as a return + /// type. + static bool isValidReturnType(Type *RetTy); - /// The parameter attributes for the \p ith parameter are returned. The 0th - /// parameter refers to the return type of the function. - /// @returns The ParameterAttributes for the \p ith parameter. - /// @brief Get the attributes for a parameter - ParameterAttributes getParamAttrs(unsigned i) const; + /// isValidArgumentType - Return true if the specified type is valid as an + /// argument type. + static bool isValidArgumentType(Type *ArgTy); - /// @brief Determine if a parameter attribute is set - bool paramHasAttr(unsigned i, ParameterAttributes attr) const { - return getParamAttrs(i) & attr; - } + bool isVarArg() const { return getSubclassData(); } + Type *getReturnType() const { return ContainedTys[0]; } - /// @brief Return the number of parameter attributes this type has. - unsigned getNumAttrs() const { - return (ParamAttrs ? unsigned(ParamAttrs->size()) : 0); - } + typedef Type::subtype_iterator param_iterator; + param_iterator param_begin() const { return ContainedTys + 1; } + param_iterator param_end() const { return &ContainedTys[NumContainedTys]; } - /// @brief Convert a ParameterAttribute into its assembly text - static std::string getParamAttrsText(ParameterAttributes Attr); + // Parameter type accessors. + Type *getParamType(unsigned i) const { return ContainedTys[i+1]; } - // Implement the AbstractTypeUser interface. - virtual void refineAbstractType(const DerivedType *OldTy, const Type *NewTy); - virtual void typeBecameConcrete(const DerivedType *AbsTy); + /// getNumParams - Return the number of fixed parameters this function type + /// requires. This does not consider varargs. + /// + unsigned getNumParams() const { return NumContainedTys - 1; } - // Methods for support type inquiry through isa, cast, and dyn_cast: - static inline bool classof(const FunctionType *T) { return true; } + // Methods for support type inquiry through isa, cast, and dyn_cast. static inline bool classof(const Type *T) { return T->getTypeID() == FunctionTyID; } @@ -208,225 +140,313 @@ public: /// CompositeType - Common super class of ArrayType, StructType, PointerType -/// and PackedType -class CompositeType : public DerivedType { +/// and VectorType. +class CompositeType : public Type { protected: - inline CompositeType(TypeID id) : DerivedType(id) { } + explicit CompositeType(LLVMContext &C, TypeID tid) : Type(C, tid) { } public: /// getTypeAtIndex - Given an index value into the type, return the type of /// the element. /// - virtual const Type *getTypeAtIndex(const Value *V) const = 0; - virtual bool indexValid(const Value *V) const = 0; + Type *getTypeAtIndex(const Value *V); + Type *getTypeAtIndex(unsigned Idx); + bool indexValid(const Value *V) const; + bool indexValid(unsigned Idx) const; - // Methods for support type inquiry through isa, cast, and dyn_cast: - static inline bool classof(const CompositeType *T) { return true; } + // Methods for support type inquiry through isa, cast, and dyn_cast. static inline bool classof(const Type *T) { return T->getTypeID() == ArrayTyID || T->getTypeID() == StructTyID || T->getTypeID() == PointerTyID || - T->getTypeID() == PackedTyID; + T->getTypeID() == VectorTyID; } }; -/// StructType - Class to represent struct types +/// StructType - Class to represent struct types. There are two different kinds +/// of struct types: Literal structs and Identified structs. +/// +/// Literal struct types (e.g. { i32, i32 }) are uniqued structurally, and must +/// always have a body when created. You can get one of these by using one of +/// the StructType::get() forms. +/// +/// Identified structs (e.g. %foo or %42) may optionally have a name and are not +/// uniqued. The names for identified structs are managed at the LLVMContext +/// level, so there can only be a single identified struct with a given name in +/// a particular LLVMContext. Identified structs may also optionally be opaque +/// (have no body specified). You get one of these by using one of the +/// StructType::create() forms. +/// +/// Independent of what kind of struct you have, the body of a struct type are +/// laid out in memory consequtively with the elements directly one after the +/// other (if the struct is packed) or (if not packed) with padding between the +/// elements as defined by DataLayout (which is required to match what the code +/// generator for a target expects). /// class StructType : public CompositeType { - friend class TypeMap; - StructType(const StructType &); // Do not implement - const StructType &operator=(const StructType &); // Do not implement - StructType(const std::vector &Types, bool isPacked); + StructType(const StructType &) LLVM_DELETED_FUNCTION; + const StructType &operator=(const StructType &) LLVM_DELETED_FUNCTION; + StructType(LLVMContext &C) + : CompositeType(C, StructTyID), SymbolTableEntry(0) {} + enum { + // This is the contents of the SubClassData field. + SCDB_HasBody = 1, + SCDB_Packed = 2, + SCDB_IsLiteral = 4, + SCDB_IsSized = 8 + }; + + /// 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 literal struct or if it is + /// a identified type that has an empty name. + /// + void *SymbolTableEntry; public: - /// StructType::get - This static method is the primary way to create a - /// StructType. - /// - static StructType *get(const std::vector &Params, - bool isPacked=false); + ~StructType() { + delete [] ContainedTys; // Delete the body. + } - // Iterator access to the elements - typedef std::vector::const_iterator element_iterator; - element_iterator element_begin() const { return ContainedTys.begin(); } - element_iterator element_end() const { return ContainedTys.end(); } + /// StructType::create - This creates an identified struct. + static StructType *create(LLVMContext &Context, StringRef Name); + static StructType *create(LLVMContext &Context); + + static StructType *create(ArrayRef Elements, + StringRef Name, + bool isPacked = false); + static StructType *create(ArrayRef Elements); + static StructType *create(LLVMContext &Context, + ArrayRef Elements, + StringRef Name, + bool isPacked = false); + static StructType *create(LLVMContext &Context, ArrayRef Elements); + static StructType *create(StringRef Name, Type *elt1, ...) END_WITH_NULL; + /// StructType::get - This static method is the primary way to create a + /// literal StructType. + static StructType *get(LLVMContext &Context, ArrayRef Elements, + bool isPacked = false); + + /// StructType::get - Create an empty structure type. + /// + static StructType *get(LLVMContext &Context, bool isPacked = false); + + /// StructType::get - This static method is a convenience method for creating + /// 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(Type *elt1, ...) END_WITH_NULL; + + bool isPacked() const { return (getSubclassData() & SCDB_Packed) != 0; } + + /// isLiteral - Return true if this type is uniqued by structural + /// equivalence, false if it is a struct definition. + bool isLiteral() const { return (getSubclassData() & SCDB_IsLiteral) != 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; } + + /// isSized - Return true if this is a sized type. + bool isSized() const; + + /// 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 literal 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 literal + /// type. + void setName(StringRef Name); + + /// setBody - Specify a body for an opaque identified type. + void setBody(ArrayRef 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(Type *ElemTy); + + + // Iterator access to the elements. + typedef Type::subtype_iterator element_iterator; + element_iterator element_begin() const { return ContainedTys; } + element_iterator element_end() const { return &ContainedTys[NumContainedTys];} + + /// isLayoutIdentical - Return true if this is layout identical to the + /// specified struct. + bool isLayoutIdentical(StructType *Other) const; + // Random access to the elements - unsigned getNumElements() const { return unsigned(ContainedTys.size()); } - const Type *getElementType(unsigned N) const { - assert(N < ContainedTys.size() && "Element number out of range!"); + unsigned getNumElements() const { return NumContainedTys; } + Type *getElementType(unsigned N) const { + assert(N < NumContainedTys && "Element number out of range!"); return ContainedTys[N]; } - /// getTypeAtIndex - Given an index value into the type, return the type of - /// the element. For a structure type, this must be a constant value... - /// - virtual const Type *getTypeAtIndex(const Value *V) const ; - virtual bool indexValid(const Value *V) const; - - // 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 *T) { return true; } + // Methods for support type inquiry through isa, cast, and dyn_cast. static inline bool classof(const Type *T) { return T->getTypeID() == StructTyID; } - - bool isPacked() const { return getSubclassData(); } }; - -/// SequentialType - This is the superclass of the array, pointer and packed +/// SequentialType - This is the superclass of the array, pointer and vector /// type classes. All of these represent "arrays" in memory. The array type /// represents a specifically sized array, pointer types are unsized/unknown -/// size arrays, packed types represent specifically sized arrays that +/// size arrays, vector types represent specifically sized arrays that /// allow for use of SIMD instructions. SequentialType holds the common /// features of all, which stem from the fact that all three lay their /// components out in memory identically. /// class SequentialType : public CompositeType { - SequentialType(const SequentialType &); // Do not implement! - const SequentialType &operator=(const SequentialType &); // Do not implement! + Type *ContainedType; ///< Storage for the single contained type. + SequentialType(const SequentialType &) LLVM_DELETED_FUNCTION; + const SequentialType &operator=(const SequentialType &) LLVM_DELETED_FUNCTION; + protected: - SequentialType(TypeID TID, const Type *ElType) : CompositeType(TID) { - ContainedTys.reserve(1); - ContainedTys.push_back(PATypeHandle(ElType, this)); + SequentialType(TypeID TID, Type *ElType) + : CompositeType(ElType->getContext(), TID), ContainedType(ElType) { + ContainedTys = &ContainedType; + NumContainedTys = 1; } public: - inline const Type *getElementType() const { return ContainedTys[0]; } + Type *getElementType() const { return ContainedTys[0]; } - virtual bool indexValid(const Value *V) const; - - /// getTypeAtIndex - Given an index value into the type, return the type of - /// the element. For sequential types, there is only one subtype... - /// - virtual const Type *getTypeAtIndex(const Value *V) const { - return ContainedTys[0]; - } - - // Methods for support type inquiry through isa, cast, and dyn_cast: - static inline bool classof(const SequentialType *T) { return true; } + // Methods for support type inquiry through isa, cast, and dyn_cast. static inline bool classof(const Type *T) { return T->getTypeID() == ArrayTyID || T->getTypeID() == PointerTyID || - T->getTypeID() == PackedTyID; + T->getTypeID() == VectorTyID; } }; -/// ArrayType - Class to represent array types +/// ArrayType - Class to represent array types. /// class ArrayType : public SequentialType { - friend class TypeMap; 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(const ArrayType &) LLVM_DELETED_FUNCTION; + const ArrayType &operator=(const ArrayType &) LLVM_DELETED_FUNCTION; + ArrayType(Type *ElType, uint64_t NumEl); public: /// ArrayType::get - This static method is the primary way to construct an /// ArrayType /// - static ArrayType *get(const Type *ElementType, uint64_t NumElements); + static ArrayType *get(Type *ElementType, uint64_t NumElements); - inline uint64_t getNumElements() const { return NumElements; } + /// isValidElementType - Return true if the specified type is valid as a + /// element type. + static bool isValidElementType(Type *ElemTy); - // Implement the AbstractTypeUser interface. - virtual void refineAbstractType(const DerivedType *OldTy, const Type *NewTy); - virtual void typeBecameConcrete(const DerivedType *AbsTy); + uint64_t getNumElements() const { return NumElements; } - // Methods for support type inquiry through isa, cast, and dyn_cast: - static inline bool classof(const ArrayType *T) { return true; } + // Methods for support type inquiry through isa, cast, and dyn_cast. static inline bool classof(const Type *T) { return T->getTypeID() == ArrayTyID; } }; -/// PackedType - Class to represent packed types +/// VectorType - Class to represent vector types. /// -class PackedType : public SequentialType { - friend class TypeMap; +class VectorType : public SequentialType { unsigned NumElements; - PackedType(const PackedType &); // Do not implement - const PackedType &operator=(const PackedType &); // Do not implement - PackedType(const Type *ElType, unsigned NumEl); + VectorType(const VectorType &) LLVM_DELETED_FUNCTION; + const VectorType &operator=(const VectorType &) LLVM_DELETED_FUNCTION; + VectorType(Type *ElType, unsigned NumEl); public: - /// PackedType::get - This static method is the primary way to construct an - /// PackedType + /// VectorType::get - This static method is the primary way to construct an + /// VectorType. /// - static PackedType *get(const Type *ElementType, unsigned NumElements); - - /// @brief Return the number of elements in the Packed type. - inline unsigned getNumElements() const { return NumElements; } + static VectorType *get(Type *ElementType, unsigned NumElements); - /// @brief Return the number of bits in the Packed type. - inline unsigned getBitWidth() const { - return NumElements *getElementType()->getPrimitiveSizeInBits(); + /// VectorType::getInteger - This static method gets a VectorType with the + /// same number of elements as the input type, and the element type is an + /// integer type of the same width as the input element type. + /// + static VectorType *getInteger(VectorType *VTy) { + unsigned EltBits = VTy->getElementType()->getPrimitiveSizeInBits(); + assert(EltBits && "Element size must be of a non-zero size"); + Type *EltTy = IntegerType::get(VTy->getContext(), EltBits); + return VectorType::get(EltTy, VTy->getNumElements()); } - // Implement the AbstractTypeUser interface. - virtual void refineAbstractType(const DerivedType *OldTy, const Type *NewTy); - virtual void typeBecameConcrete(const DerivedType *AbsTy); + /// VectorType::getExtendedElementVectorType - This static method is like + /// getInteger except that the element types are twice as wide as the + /// elements in the input type. + /// + static VectorType *getExtendedElementVectorType(VectorType *VTy) { + unsigned EltBits = VTy->getElementType()->getPrimitiveSizeInBits(); + Type *EltTy = IntegerType::get(VTy->getContext(), EltBits * 2); + return VectorType::get(EltTy, VTy->getNumElements()); + } - // Methods for support type inquiry through isa, cast, and dyn_cast: - static inline bool classof(const PackedType *T) { return true; } - static inline bool classof(const Type *T) { - return T->getTypeID() == PackedTyID; + /// VectorType::getTruncatedElementVectorType - This static method is like + /// getInteger except that the element types are half as wide as the + /// elements in the input type. + /// + static VectorType *getTruncatedElementVectorType(VectorType *VTy) { + unsigned EltBits = VTy->getElementType()->getPrimitiveSizeInBits(); + assert((EltBits & 1) == 0 && + "Cannot truncate vector element with odd bit-width"); + Type *EltTy = IntegerType::get(VTy->getContext(), EltBits / 2); + return VectorType::get(EltTy, VTy->getNumElements()); } -}; + /// isValidElementType - Return true if the specified type is valid as a + /// element type. + static bool isValidElementType(Type *ElemTy); -/// PointerType - Class to represent pointers -/// -class PointerType : public SequentialType { - friend class TypeMap; - PointerType(const PointerType &); // Do not implement - const PointerType &operator=(const PointerType &); // Do not implement - PointerType(const Type *ElType); -public: - /// PointerType::get - This is the only way to construct a new pointer type. - static PointerType *get(const Type *ElementType); + /// @brief Return the number of elements in the Vector type. + unsigned getNumElements() const { return NumElements; } - // Implement the AbstractTypeUser interface. - virtual void refineAbstractType(const DerivedType *OldTy, const Type *NewTy); - virtual void typeBecameConcrete(const DerivedType *AbsTy); + /// @brief Return the number of bits in the Vector type. + /// Returns zero when the vector is a vector of pointers. + unsigned getBitWidth() const { + return NumElements * getElementType()->getPrimitiveSizeInBits(); + } - // Implement support type inquiry through isa, cast, and dyn_cast: - static inline bool classof(const PointerType *T) { return true; } + // Methods for support type inquiry through isa, cast, and dyn_cast. static inline bool classof(const Type *T) { - return T->getTypeID() == PointerTyID; + return T->getTypeID() == VectorTyID; } }; -/// OpaqueType - Class to represent abstract types +/// PointerType - Class to represent pointers. /// -class OpaqueType : public DerivedType { - OpaqueType(const OpaqueType &); // DO NOT IMPLEMENT - const OpaqueType &operator=(const OpaqueType &); // DO NOT IMPLEMENT - OpaqueType(); +class PointerType : public SequentialType { + PointerType(const PointerType &) LLVM_DELETED_FUNCTION; + const PointerType &operator=(const PointerType &) LLVM_DELETED_FUNCTION; + explicit PointerType(Type *ElType, unsigned AddrSpace); public: - /// OpaqueType::get - Static factory method for the OpaqueType class... - /// - static OpaqueType *get() { - return new OpaqueType(); // All opaque types are distinct + /// PointerType::get - This constructs a pointer to an object of the specified + /// type in a numbered address space. + static PointerType *get(Type *ElementType, unsigned AddressSpace); + + /// PointerType::getUnqual - This constructs a pointer to an object of the + /// specified type in the generic address space (address space zero). + static PointerType *getUnqual(Type *ElementType) { + return PointerType::get(ElementType, 0); } - // Implement the AbstractTypeUser interface. - virtual void refineAbstractType(const DerivedType *OldTy, const Type *NewTy) { - abort(); // FIXME: this is not really an AbstractTypeUser! - } - virtual void typeBecameConcrete(const DerivedType *AbsTy) { - abort(); // FIXME: this is not really an AbstractTypeUser! - } + /// isValidElementType - Return true if the specified type is valid as a + /// element type. + static bool isValidElementType(Type *ElemTy); - // Implement support for type inquiry through isa, cast, and dyn_cast: - static inline bool classof(const OpaqueType *T) { return true; } + /// @brief Return the address space of the Pointer type. + inline unsigned getAddressSpace() const { return getSubclassData(); } + + // Implement support type inquiry through isa, cast, and dyn_cast. static inline bool classof(const Type *T) { - return T->getTypeID() == OpaqueTyID; + return T->getTypeID() == PointerTyID; } };