X-Git-Url: http://demsky.eecs.uci.edu/git/?a=blobdiff_plain;f=include%2Fllvm%2FDerivedTypes.h;h=6013c265f0b1700ae86c76722d30231ef4408736;hb=2c783e46c3480c7fa8b91b10610a8e0d92e33ccd;hp=78759f1dea97fd3d1c5cc3268f7c8313ee6605bd;hpb=a54b7cbd452b3adb2f51346140d996b29c2cdb30;p=oota-llvm.git diff --git a/include/llvm/DerivedTypes.h b/include/llvm/DerivedTypes.h index 78759f1dea9..6013c265f0b 100644 --- a/include/llvm/DerivedTypes.h +++ b/include/llvm/DerivedTypes.h @@ -28,14 +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 @@ -78,7 +80,7 @@ public: /// @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; @@ -101,28 +103,41 @@ public: /// @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->isIntegral(); } + static inline bool classof(const Type *T) { + return T->getTypeID() == IntegerTyID; + } }; /// 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; @@ -130,7 +145,7 @@ private: 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, ParamAttrsList *Attrs = 0); public: /// FunctionType::get - This static method is the primary way of constructing @@ -140,18 +155,19 @@ public: 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() + 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. + ///< 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]; } @@ -159,26 +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 - 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); + const ParamAttrsList *getParamAttrs() const { return ParamAttrs; } // Implement the AbstractTypeUser interface. virtual void refineAbstractType(const DerivedType *OldTy, const Type *NewTy); @@ -193,10 +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 @@ -211,7 +216,7 @@ public: return T->getTypeID() == ArrayTyID || T->getTypeID() == StructTyID || T->getTypeID() == PointerTyID || - T->getTypeID() == PackedTyID; + T->getTypeID() == VectorTyID; } }; @@ -231,14 +236,14 @@ public: 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]; } @@ -265,18 +270,20 @@ public: /// 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: @@ -296,7 +303,7 @@ public: static inline bool classof(const Type *T) { return T->getTypeID() == ArrayTyID || T->getTypeID() == PointerTyID || - T->getTypeID() == PackedTyID; + T->getTypeID() == VectorTyID; } }; @@ -329,25 +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 - 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(); } @@ -357,9 +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; } }; @@ -370,7 +377,7 @@ 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); + 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);