X-Git-Url: http://demsky.eecs.uci.edu/git/?a=blobdiff_plain;ds=sidebyside;f=include%2Fllvm%2FDerivedTypes.h;h=6013c265f0b1700ae86c76722d30231ef4408736;hb=c651e4c51e11feb58e6c12fee8a8f85631269f2f;hp=13344ba5a34ccb1399d6ac27613ee8594650fed9;hpb=30d8e29db8f179b06f09d6e75df537fb928e700d;p=oota-llvm.git diff --git a/include/llvm/DerivedTypes.h b/include/llvm/DerivedTypes.h index 13344ba5a34..6013c265f0b 100644 --- a/include/llvm/DerivedTypes.h +++ b/include/llvm/DerivedTypes.h @@ -28,13 +28,16 @@ class FunctionValType; class ArrayValType; class StructValType; class PointerValType; -class PackedValType; +class VectorValType; +class IntegerValType; +class APInt; +class ParamAttrsList; 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 @@ -71,39 +74,100 @@ 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. +/// @brief Integer representation type +class IntegerType : public DerivedType { +protected: + explicit IntegerType(unsigned NumBits) : DerivedType(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(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. + 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 *T) { return true; } + static inline bool classof(const Type *T) { + return T->getTypeID() == IntegerTyID; + } +}; + /// FunctionType - Class to represent function types /// class FunctionType : public DerivedType { friend class TypeMap; bool isVarArgs; + ParamAttrsList *ParamAttrs; 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); + bool IsVarArgs, ParamAttrsList *Attrs = 0); public: /// FunctionType::get - This static method is the primary way of constructing - /// a FunctionType + /// a FunctionType. /// - static FunctionType *get(const Type *Result, - const std::vector &Params, - bool isVarArg); + 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 + ParamAttrsList *Attrs = 0 + ///< 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. This argument must be on the heap and FunctionType + ///< owns it after its passed here. + ); 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]; } @@ -111,7 +175,15 @@ 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; } + + bool isStructReturn() const; + + /// 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 + const ParamAttrsList *getParamAttrs() const { return ParamAttrs; } // Implement the AbstractTypeUser interface. virtual void refineAbstractType(const DerivedType *OldTy, const Type *NewTy); @@ -126,10 +198,10 @@ 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(TypeID id) : DerivedType(id) { } public: /// getTypeAtIndex - Given an index value into the type, return the type of @@ -144,7 +216,7 @@ public: return T->getTypeID() == ArrayTyID || T->getTypeID() == StructTyID || T->getTypeID() == PointerTyID || - T->getTypeID() == PackedTyID; + T->getTypeID() == VectorTyID; } }; @@ -155,31 +227,23 @@ 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(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(const std::vector &Params, + bool isPacked=false); // 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]; } @@ -198,24 +262,28 @@ public: 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 /// 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! 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: @@ -235,7 +303,7 @@ public: static inline bool classof(const Type *T) { return T->getTypeID() == ArrayTyID || T->getTypeID() == PointerTyID || - T->getTypeID() == PackedTyID; + T->getTypeID() == VectorTyID; } }; @@ -248,15 +316,7 @@ 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 @@ -276,33 +336,25 @@ public: } }; -/// 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 - /// - /// Private ctor - Only can be created by a static member... - /// - PackedType(const Type *ElType, unsigned NumEl); - + VectorType(const VectorType &); // Do not implement + const VectorType &operator=(const VectorType &); // Do not implement + VectorType(const 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); + static VectorType *get(const Type *ElementType, unsigned NumElements); - /// @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. + /// @brief Return the number of bits in the Vector type. inline unsigned getBitWidth() const { return NumElements *getElementType()->getPrimitiveSizeInBits(); } @@ -312,9 +364,9 @@ 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 *T) { return true; } static inline bool classof(const Type *T) { - return T->getTypeID() == PackedTyID; + return T->getTypeID() == VectorTyID; } }; @@ -325,14 +377,7 @@ class PointerType : public SequentialType { friend class TypeMap; 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 - - // Private ctor - Only can be created by a static member... - PointerType(const Type *ElType); - + explicit PointerType(const Type *ElType); public: /// PointerType::get - This is the only way to construct a new pointer type. static PointerType *get(const Type *ElementType); @@ -354,14 +399,7 @@ 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(); - public: /// OpaqueType::get - Static factory method for the OpaqueType class... ///