X-Git-Url: http://demsky.eecs.uci.edu/git/?a=blobdiff_plain;f=include%2Fllvm%2FDerivedTypes.h;h=fb51430b481e1db0beea27f83f77f8557308b88b;hb=f98d8fee3c5367622cf03e52f1e1b2251ac6cf3f;hp=13344ba5a34ccb1399d6ac27613ee8594650fed9;hpb=30d8e29db8f179b06f09d6e75df537fb928e700d;p=oota-llvm.git diff --git a/include/llvm/DerivedTypes.h b/include/llvm/DerivedTypes.h index 13344ba5a34..fb51430b481 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. // //===----------------------------------------------------------------------===// // @@ -28,13 +28,16 @@ class FunctionValType; class ArrayValType; class StructValType; class PointerValType; -class PackedValType; +class VectorValType; +class IntegerValType; +class APInt; +class LLVMContext; class DerivedType : public Type { friend class Type; protected: - DerivedType(TypeID id) : Type(id) {} + 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 @@ -48,6 +51,10 @@ protected: /// void dropAllTypeUses(); + /// unlockedRefineAbstractTypeTo - Internal version of refineAbstractTypeTo + /// that performs no locking. Only used for internal recursion. + void unlockedRefineAbstractTypeTo(const Type *NewType); + public: //===--------------------------------------------------------------------===// @@ -65,12 +72,75 @@ 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(); } }; +/// 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 { + friend class LLVMContextImpl; + +protected: + explicit IntegerType(LLVMContext &C, unsigned NumBits) : + DerivedType(C, IntegerTyID) { + setSubclassData(NumBits); + } + friend class TypeMap; +public: + /// This enum is just used to hold constants we need for IntegerType. + enum { + MIN_INT_BITS = 1, ///< Minimum number of bits that can be specified + MAX_INT_BITS = (1<<23)-1 ///< Maximum number of bits that can be specified + ///< Note that bit width is stored in the Type classes SubclassData field + ///< 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. + /// 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(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 + /// i8, 0xFFFF for i16, etc. + uint64_t getBitMask() const { + 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. + /// @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 *) { return true; } + static inline bool classof(const Type *T) { + return T->getTypeID() == IntegerTyID; + } +}; + /// FunctionType - Class to represent function types /// @@ -80,30 +150,42 @@ class FunctionType : public DerivedType { FunctionType(const FunctionType &); // Do not implement const FunctionType &operator=(const FunctionType &); // Do not implement -protected: - /// This should really be private, but it squelches a bogus warning - /// from GCC to make them protected: warning: `class FunctionType' only - /// defines private constructors and has no friends - /// - /// Private ctor - Only can be created by a static member... - /// FunctionType(const Type *Result, const std::vector &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 + ); + + /// FunctionType::get - Create a FunctionType taking no parameters. /// - static FunctionType *get(const Type *Result, - const std::vector &Params, - bool isVarArg); + static FunctionType *get( + const Type *Result, ///< The result type + bool isVarArg ///< Whether this is a variable argument length function + ) { + return get(Result, std::vector(), isVarArg); + } + + /// isValidReturnType - Return true if the specified type is valid as a return + /// type. + static bool isValidReturnType(const Type *RetTy); + + /// isValidArgumentType - Return true if the specified type is valid as an + /// argument type. + static bool isValidArgumentType(const Type *ArgTy); 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]; } @@ -111,14 +193,14 @@ 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); } + 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; } @@ -126,25 +208,28 @@ public: /// CompositeType - Common super class of ArrayType, StructType, PointerType -/// and PackedType +/// and VectorType class CompositeType : public DerivedType { protected: - inline CompositeType(TypeID id) : DerivedType(id) { } + inline explicit CompositeType(LLVMContext &C, TypeID id) : + DerivedType(C, 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 || T->getTypeID() == PointerTyID || - T->getTypeID() == PackedTyID; + T->getTypeID() == VectorTyID; } }; @@ -155,87 +240,113 @@ class StructType : public CompositeType { friend class TypeMap; StructType(const StructType &); // Do not implement const StructType &operator=(const StructType &); // Do not implement - -protected: - /// This should really be private, but it squelches a bogus warning - /// from GCC to make them protected: warning: `class StructType' only - /// defines private constructors and has no friends - /// - /// Private ctor - Only can be created by a static member... - /// - StructType(const std::vector &Types); - + StructType(LLVMContext &C, + const std::vector &Types, bool isPacked); public: /// StructType::get - This static method is the primary way to create a /// StructType. /// - static StructType *get(const std::vector &Params); + static StructType *get(LLVMContext &Context, + const std::vector &Params, + bool isPacked=false); + + /// StructType::get - Create an empty structure type. + /// + static StructType *get(LLVMContext &Context, bool isPacked=false) { + return get(Context, std::vector(), isPacked); + } + + /// 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(LLVMContext &Context, + const Type *type, ...) END_WITH_NULL; + + /// isValidElementType - Return true if the specified type is valid as a + /// element type. + static bool isValidElementType(const Type *ElemTy); // 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 (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, 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 { + 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(ElType->getContext(), 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 || - T->getTypeID() == PackedTyID; + T->getTypeID() == VectorTyID; } }; @@ -248,21 +359,17 @@ class ArrayType : public SequentialType { ArrayType(const ArrayType &); // Do not implement const ArrayType &operator=(const ArrayType &); // Do not implement -protected: - /// This should really be private, but it squelches a bogus warning - /// from GCC to make them protected: warning: `class ArrayType' only - /// defines private constructors and has no friends - /// - /// Private ctor - Only can be created by a static member... - /// ArrayType(const 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); + /// isValidElementType - Return true if the specified type is valid as a + /// element type. + static bool isValidElementType(const Type *ElemTy); + inline uint64_t getNumElements() const { return NumElements; } // Implement the AbstractTypeUser interface. @@ -270,41 +377,69 @@ 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; } }; -/// PackedType - Class to represent packed types +/// VectorType - Class to represent vector types /// -class PackedType : public SequentialType { - friend class TypeMap; +class VectorType : public SequentialType { + friend class TypeMap; unsigned NumElements; - PackedType(const PackedType &); // Do not implement - const PackedType &operator=(const PackedType &); // Do not implement -protected: - /// This should really be private, but it squelches a bogus warning - /// from GCC to make them protected: warning: `class PackedType' only - /// defines private constructors and has no friends + VectorType(const VectorType &); // Do not implement + const VectorType &operator=(const VectorType &); // Do not implement + VectorType(const Type *ElType, unsigned NumEl); +public: + /// VectorType::get - This static method is the primary way to construct an + /// VectorType /// - /// Private ctor - Only can be created by a static member... + 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. /// - PackedType(const Type *ElType, unsigned NumEl); + static VectorType *getInteger(const VectorType *VTy) { + unsigned EltBits = VTy->getElementType()->getPrimitiveSizeInBits(); + const Type *EltTy = IntegerType::get(VTy->getContext(), EltBits); + return VectorType::get(EltTy, VTy->getNumElements()); + } -public: - /// PackedType::get - This static method is the primary way to construct an - /// PackedType + /// 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(VTy->getContext(), 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 PackedType *get(const Type *ElementType, unsigned NumElements); + 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(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(const Type *ElemTy); - /// @brief Return the number of elements in the Packed type. + /// @brief Return the number of elements in the Vector type. inline unsigned getNumElements() const { return NumElements; } - /// @brief Return the number of bits in the Packed type. - inline unsigned getBitWidth() const { - return NumElements *getElementType()->getPrimitiveSizeInBits(); + /// @brief Return the number of bits in the Vector type. + inline unsigned getBitWidth() const { + return NumElements * getElementType()->getPrimitiveSizeInBits(); } // Implement the AbstractTypeUser interface. @@ -312,9 +447,9 @@ public: virtual void typeBecameConcrete(const DerivedType *AbsTy); // 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 VectorType *) { return true; } static inline bool classof(const Type *T) { - return T->getTypeID() == PackedTyID; + return T->getTypeID() == VectorTyID; } }; @@ -323,26 +458,35 @@ public: /// class PointerType : public SequentialType { friend class TypeMap; + unsigned AddressSpace; + PointerType(const PointerType &); // Do not implement const PointerType &operator=(const PointerType &); // Do not implement -protected: - // This should really be private, but it squelches a bogus warning - // from GCC to make them protected: warning: `class PointerType' only - // defines private constructors and has no friends + explicit PointerType(const Type *ElType, unsigned AddrSpace); +public: + /// 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); + } - // Private ctor - Only can be created by a static member... - PointerType(const Type *ElType); + /// isValidElementType - Return true if the specified type is valid as a + /// element type. + static bool isValidElementType(const Type *ElemTy); -public: - /// PointerType::get - This is the only way to construct a new pointer type. - static PointerType *get(const Type *ElementType); + /// @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; } @@ -354,31 +498,16 @@ public: class OpaqueType : public DerivedType { OpaqueType(const OpaqueType &); // DO NOT IMPLEMENT const OpaqueType &operator=(const OpaqueType &); // DO NOT IMPLEMENT -protected: - /// This should really be private, but it squelches a bogus warning - /// from GCC to make them protected: warning: `class OpaqueType' only - /// defines private constructors and has no friends - /// - /// Private ctor - Only can be created by a static member... - OpaqueType(); - + OpaqueType(LLVMContext &C); public: /// OpaqueType::get - Static factory method for the OpaqueType class... /// - static OpaqueType *get() { - 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! + static OpaqueType *get(LLVMContext &C) { + return new OpaqueType(C); // All opaque types are distinct } // 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; }