X-Git-Url: http://demsky.eecs.uci.edu/git/?a=blobdiff_plain;f=include%2Fllvm%2FDerivedTypes.h;h=dd6d908df4104abda21b228b1b37ebeaac3e632c;hb=f9a77b77c2324b2ca5c644909ebda387daf82fe3;hp=08a7aeffe3bf5768581a6e5c1ac0cf980d08821d;hpb=ac9dcb94dde5f166ee29372385c0e3b695227ab4;p=oota-llvm.git diff --git a/include/llvm/DerivedTypes.h b/include/llvm/DerivedTypes.h index 08a7aeffe3b..dd6d908df41 100644 --- a/include/llvm/DerivedTypes.h +++ b/include/llvm/DerivedTypes.h @@ -2,8 +2,8 @@ // // 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. // //===----------------------------------------------------------------------===// // @@ -30,12 +30,13 @@ class StructValType; class PointerValType; class VectorValType; class IntegerValType; +class APInt; class DerivedType : public Type { friend class Type; protected: - DerivedType(TypeID id) : Type(id) {} + explicit DerivedType(TypeID id) : Type(id) {} /// notifyUsesThatTypeBecameConcrete - Notify AbstractTypeUsers of this type /// that the current type has transitioned from being abstract to being @@ -66,7 +67,7 @@ public: 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 DerivedType *) { return true; } static inline bool classof(const Type *T) { return T->isDerivedType(); } @@ -74,11 +75,11 @@ public: /// 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 { protected: - IntegerType(unsigned NumBits) : DerivedType(IntegerTyID) { + explicit IntegerType(unsigned NumBits) : DerivedType(IntegerTyID) { setSubclassData(NumBits); } friend class TypeMap; @@ -91,7 +92,7 @@ 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. @@ -103,19 +104,30 @@ public: /// 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; } + static inline bool classof(const IntegerType *) { return true; } static inline bool classof(const Type *T) { return T->getTypeID() == IntegerTyID; } @@ -125,50 +137,34 @@ 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 - InRegAttribute = 1 << 3, ///< force argument to be passed in register - StructRetAttribute= 1 << 4 ///< hidden pointer to structure to return - }; - 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); + 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. + bool isVarArg ///< Whether this is a variable argument length function ); + /// isValidReturnType - Return true if the specified type is valid as a return + /// type. + static bool isValidReturnType(const Type *RetTy); + 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(); } + 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]; } @@ -176,37 +172,14 @@ public: /// getNumParams - Return the number of fixed parameters this function type /// requires. This does not consider varargs. /// - unsigned getNumParams() const { return unsigned(ContainedTys.size()-1); } - - bool isStructReturn() const { - return (getNumParams() && paramHasAttr(1, StructRetAttribute)); - } - - /// 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; - - /// @brief Determine if a parameter attribute is set - bool paramHasAttr(unsigned i, ParameterAttributes attr) const { - return getParamAttrs(i) & attr; - } - - /// @brief Return the number of parameter attributes this type has. - unsigned getNumAttrs() const { - return (ParamAttrs ? unsigned(ParamAttrs->size()) : 0); - } - - /// @brief Convert a ParameterAttribute into its assembly text - static std::string getParamAttrsText(ParameterAttributes Attr); + 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 *T) { return true; } + static inline bool classof(const FunctionType *) { return true; } static inline bool classof(const Type *T) { return T->getTypeID() == FunctionTyID; } @@ -217,17 +190,19 @@ public: /// and VectorType class CompositeType : public DerivedType { protected: - inline CompositeType(TypeID id) : DerivedType(id) { } + inline explicit CompositeType(TypeID id) : DerivedType(id) { } 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 const Type *getTypeAtIndex(unsigned Idx) const = 0; virtual bool indexValid(const Value *V) const = 0; + virtual bool indexValid(unsigned Idx) const = 0; // Methods for support type inquiry through isa, cast, and dyn_cast: - static inline bool classof(const CompositeType *T) { return true; } + static inline bool classof(const CompositeType *) { return true; } static inline bool classof(const Type *T) { return T->getTypeID() == ArrayTyID || T->getTypeID() == StructTyID || @@ -248,42 +223,50 @@ public: /// StructType::get - This static method is the primary way to create a /// StructType. /// - static StructType *get(const std::vector &Params, + static StructType *get(const std::vector &Params, 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. To get + /// an empty struct, pass NULL, NULL. + static StructType *get(const Type *type, ...) END_WITH_NULL; + // 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(); } + typedef Type::subtype_iterator element_iterator; + element_iterator element_begin() const { return ContainedTys; } + element_iterator element_end() const { return &ContainedTys[NumContainedTys];} // Random access to the elements - unsigned getNumElements() const { return unsigned(ContainedTys.size()); } + unsigned getNumElements() const { return NumContainedTys; } const Type *getElementType(unsigned N) const { - assert(N < ContainedTys.size() && "Element number out of range!"); + 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 const Type *getTypeAtIndex(const Value *V) const; + virtual const Type *getTypeAtIndex(unsigned Idx) const; virtual bool indexValid(const Value *V) const; + virtual bool indexValid(unsigned Idx) 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; } + static inline bool classof(const StructType *) { return true; } static inline bool classof(const Type *T) { return T->getTypeID() == StructTyID; } - bool isPacked() const { return getSubclassData(); } + bool isPacked() const { return (0 != getSubclassData()) ? true : false; } }; -/// 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, vector types represent specifically sized arrays that @@ -292,28 +275,39 @@ public: /// components out in memory identically. /// class SequentialType : public CompositeType { + PATypeHandle 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(TID) { - ContainedTys.reserve(1); - ContainedTys.push_back(PATypeHandle(ElType, this)); + SequentialType(TypeID TID, const Type *ElType) + : CompositeType(TID), ContainedType(ElType, this_()) { + ContainedTys = &ContainedType; + NumContainedTys = 1; } public: inline const Type *getElementType() const { return ContainedTys[0]; } virtual bool indexValid(const Value *V) const; + virtual bool indexValid(unsigned) const { + return true; + } /// 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 { + virtual const Type *getTypeAtIndex(const Value *) const { + return ContainedTys[0]; + } + virtual const Type *getTypeAtIndex(unsigned) const { return ContainedTys[0]; } // Methods for support type inquiry through isa, cast, and dyn_cast: - static inline bool classof(const SequentialType *T) { return true; } + static inline bool classof(const SequentialType *) { return true; } static inline bool classof(const Type *T) { return T->getTypeID() == ArrayTyID || T->getTypeID() == PointerTyID || @@ -344,7 +338,7 @@ public: virtual void typeBecameConcrete(const DerivedType *AbsTy); // Methods for support type inquiry through isa, cast, and dyn_cast: - static inline bool classof(const ArrayType *T) { return true; } + static inline bool classof(const ArrayType *) { return true; } static inline bool classof(const Type *T) { return T->getTypeID() == ArrayTyID; } @@ -365,11 +359,43 @@ public: /// static VectorType *get(const Type *ElementType, unsigned NumElements); + /// 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(const VectorType *VTy) { + unsigned EltBits = VTy->getElementType()->getPrimitiveSizeInBits(); + const Type *EltTy = IntegerType::get(EltBits); + return VectorType::get(EltTy, VTy->getNumElements()); + } + + /// 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(const VectorType *VTy) { + unsigned EltBits = VTy->getElementType()->getPrimitiveSizeInBits(); + const Type *EltTy = IntegerType::get(EltBits * 2); + return VectorType::get(EltTy, VTy->getNumElements()); + } + + /// 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(const VectorType *VTy) { + unsigned EltBits = VTy->getElementType()->getPrimitiveSizeInBits(); + assert((EltBits & 1) == 0 && + "Cannot truncate vector element with odd bit-width"); + const Type *EltTy = IntegerType::get(EltBits / 2); + return VectorType::get(EltTy, VTy->getNumElements()); + } + /// @brief Return the number of elements in the Vector type. inline unsigned getNumElements() const { return NumElements; } /// @brief Return the number of bits in the Vector type. - inline unsigned getBitWidth() const { + inline unsigned getBitWidth() const { return NumElements *getElementType()->getPrimitiveSizeInBits(); } @@ -378,7 +404,7 @@ public: virtual void typeBecameConcrete(const DerivedType *AbsTy); // Methods for support type inquiry through isa, cast, and dyn_cast: - static inline bool classof(const VectorType *T) { return true; } + static inline bool classof(const VectorType *) { return true; } static inline bool classof(const Type *T) { return T->getTypeID() == VectorTyID; } @@ -389,19 +415,31 @@ public: /// class PointerType : public SequentialType { friend class TypeMap; + unsigned AddressSpace; + PointerType(const PointerType &); // Do not implement const PointerType &operator=(const PointerType &); // Do not implement - PointerType(const Type *ElType); + explicit PointerType(const Type *ElType, unsigned AddrSpace); public: - /// PointerType::get - This is the only way to construct a new pointer type. - static PointerType *get(const Type *ElementType); + /// PointerType::get - This constructs a pointer to an object of the specified + /// type in a numbered address space. + static PointerType *get(const 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(const Type *ElementType) { + return PointerType::get(ElementType, 0); + } + + /// @brief Return the address space of the Pointer type. + inline unsigned getAddressSpace() const { return AddressSpace; } // 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 *T) { return true; } + static inline bool classof(const PointerType *) { return true; } static inline bool classof(const Type *T) { return T->getTypeID() == PointerTyID; } @@ -421,16 +459,8 @@ public: return new OpaqueType(); // All opaque types are distinct } - // 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! - } - // Implement support for type inquiry through isa, cast, and dyn_cast: - static inline bool classof(const OpaqueType *T) { return true; } + static inline bool classof(const OpaqueType *) { return true; } static inline bool classof(const Type *T) { return T->getTypeID() == OpaqueTyID; }