X-Git-Url: http://demsky.eecs.uci.edu/git/?a=blobdiff_plain;f=include%2Fllvm%2FDerivedTypes.h;h=053091b86fe16be30787c410c56ed2de53538666;hb=b834a7b73ce0dcf8fbf8d8b0d62f69e4b78059ad;hp=04a73fe8cf2e74c9a977f61713a29971cf4a1c37;hpb=12c846f5d2adc88e3aa43500128475c9ba2e9228;p=oota-llvm.git diff --git a/include/llvm/DerivedTypes.h b/include/llvm/DerivedTypes.h index 04a73fe8cf2..053091b86fe 100644 --- a/include/llvm/DerivedTypes.h +++ b/include/llvm/DerivedTypes.h @@ -50,6 +50,10 @@ protected: /// void dropAllTypeUses(); + /// unlockedRefineAbstractTypeTo - Internal version of refineAbstractTypeTo + /// that performs no locking. Only used for internal recursion. + void unlockedRefineAbstractTypeTo(const Type *NewType); + public: //===--------------------------------------------------------------------===// @@ -75,7 +79,7 @@ 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: @@ -92,7 +96,7 @@ 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. @@ -114,14 +118,14 @@ public: 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; @@ -147,18 +151,31 @@ class FunctionType : public DerivedType { 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, ///< 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]; } @@ -223,15 +240,25 @@ 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 - Create an empty structure type. + /// + static StructType *get(bool isPacked=false) { + return get(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(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 Type::subtype_iterator element_iterator; element_iterator element_begin() const { return ContainedTys; } @@ -282,9 +309,9 @@ class SequentialType : public CompositeType { // avoiding warning: 'this' : used in base member initializer list SequentialType* this_() { return this; } protected: - SequentialType(TypeID TID, const Type *ElType) + SequentialType(TypeID TID, const Type *ElType) : CompositeType(TID), ContainedType(ElType, this_()) { - ContainedTys = &ContainedType; + ContainedTys = &ContainedType; NumContainedTys = 1; } @@ -331,6 +358,10 @@ public: /// 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. @@ -369,11 +400,37 @@ public: 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()); + } + + /// 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 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(); } @@ -394,21 +451,25 @@ public: class PointerType : public SequentialType { friend class TypeMap; unsigned AddressSpace; - + PointerType(const PointerType &); // Do not implement const PointerType &operator=(const PointerType &); // Do not implement explicit PointerType(const Type *ElType, unsigned AddrSpace); public: - /// PointerType::get - This constructs a pointer to an object of the specified + /// 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 + + /// 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) { + static PointerType *getUnqual(const Type *ElementType) { return PointerType::get(ElementType, 0); } - + + /// isValidElementType - Return true if the specified type is valid as a + /// element type. + static bool isValidElementType(const Type *ElemTy); + /// @brief Return the address space of the Pointer type. inline unsigned getAddressSpace() const { return AddressSpace; }