X-Git-Url: http://demsky.eecs.uci.edu/git/?a=blobdiff_plain;f=include%2Fllvm%2FDerivedTypes.h;h=12219c535425c1b000d2d2b392af755db681a0fa;hb=80a75bfae980df96f969f1c05b0c4a80ce975240;hp=2426e7b289dcab33dfdecf5fbbc85357df15c807;hpb=9d6565a5b1fbc4286d6ee638d8f47a3171a9ed7e;p=oota-llvm.git diff --git a/include/llvm/DerivedTypes.h b/include/llvm/DerivedTypes.h index 2426e7b289d..12219c53542 100644 --- a/include/llvm/DerivedTypes.h +++ b/include/llvm/DerivedTypes.h @@ -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 @@ -78,7 +79,7 @@ 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; @@ -105,9 +106,20 @@ public: /// 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-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. /// @returns true if this is a power-of-2 byte width. @@ -125,29 +137,13 @@ 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 @@ -156,19 +152,15 @@ public: 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 ); 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]; } @@ -176,30 +168,7 @@ 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); @@ -217,7 +186,7 @@ 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 @@ -252,14 +221,14 @@ 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]; } @@ -279,25 +248,30 @@ public: 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, 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(TID), ContainedType(ElType, this_()) { + ContainedTys = &ContainedType; + NumContainedTys = 1; } public: @@ -350,7 +324,7 @@ public: } }; -/// VectorType - Class to represent packed types +/// VectorType - Class to represent vector types /// class VectorType : public SequentialType { friend class TypeMap; @@ -391,7 +365,7 @@ 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); @@ -421,14 +395,6 @@ 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 Type *T) {