X-Git-Url: http://demsky.eecs.uci.edu/git/?a=blobdiff_plain;f=include%2Fllvm%2FType.h;h=5e09a6122208000074a67ab81ab7ab4b0e2e0baa;hb=47128fe2969b90880c5ffdbeb8c699a06bbaa9f9;hp=b8f65582ba333f9985fdac854edd3d453706f8de;hpb=795daece23cdc66bc7c16e9a2043dd4a4d0bbfc0;p=oota-llvm.git diff --git a/include/llvm/Type.h b/include/llvm/Type.h index b8f65582ba3..5e09a612220 100644 --- a/include/llvm/Type.h +++ b/include/llvm/Type.h @@ -12,8 +12,10 @@ #define LLVM_TYPE_H #include "llvm/AbstractTypeUser.h" +#include "llvm/LLVMContext.h" #include "llvm/Support/Casting.h" #include "llvm/Support/DataTypes.h" +#include "llvm/System/Atomic.h" #include "llvm/ADT/GraphTraits.h" #include "llvm/ADT/iterator.h" #include @@ -65,6 +67,7 @@ public: /// value, you can cast to a "DerivedType" subclass (see DerivedTypes.h) /// Note: If you add an element to this, you need to add an element to the /// Type::getPrimitiveType function, or else things will break! + /// Also update LLVMTypeKind and LLVMGetTypeKind () in the C binding. /// enum TypeID { // PrimitiveTypes .. make sure LastPrimitiveTyID stays up to date @@ -75,16 +78,17 @@ public: FP128TyID, ///< 4: 128 bit floating point type (112-bit mantissa) PPC_FP128TyID, ///< 5: 128 bit floating point type (two 64-bits) LabelTyID, ///< 6: Labels + MetadataTyID, ///< 7: Metadata // Derived types... see DerivedTypes.h file... // Make sure FirstDerivedTyID stays up to date!!! - IntegerTyID, ///< 7: Arbitrary bit width integers - FunctionTyID, ///< 8: Functions - StructTyID, ///< 9: Structures - ArrayTyID, ///< 10: Arrays - PointerTyID, ///< 11: Pointers - OpaqueTyID, ///< 12: Opaque: type with unknown structure - VectorTyID, ///< 13: SIMD 'packed' format, or other vector type + IntegerTyID, ///< 8: Arbitrary bit width integers + FunctionTyID, ///< 9: Functions + StructTyID, ///< 10: Structures + ArrayTyID, ///< 11: Arrays + PointerTyID, ///< 12: Pointers + OpaqueTyID, ///< 13: Opaque: type with unknown structure + VectorTyID, ///< 14: SIMD 'packed' format, or other vector type NumTypeIDs, // Must remain as last defined ID LastPrimitiveTyID = LabelTyID, @@ -101,7 +105,10 @@ private: /// has no AbstractTypeUsers, the type is deleted. This is only sensical for /// derived types. /// - mutable unsigned RefCount; + mutable sys::cas_flag RefCount; + + /// Context - This refers to the LLVMContext in which this type was uniqued. + LLVMContext &Context; const Type *getForwardedTypeInternal() const; @@ -111,7 +118,8 @@ private: protected: explicit Type(TypeID id) : ID(id), Abstract(false), SubclassData(0), - RefCount(0), ForwardType(0), NumContainedTys(0), + RefCount(0), Context(getGlobalContext()), + ForwardType(0), NumContainedTys(0), ContainedTys(0) {} virtual ~Type() { assert(AbstractTypeUsers.empty() && "Abstract types remain"); @@ -167,6 +175,9 @@ public: /// module). void dump(const Module *Context) const; + /// getContext - Fetch the LLVMContext in which this type was uniqued. + LLVMContext &getContext() const { return Context; } + //===--------------------------------------------------------------------===// // Property accessors for dealing with types... Some of these virtual methods // are defined in private classes defined in Type.cpp for primitive types. @@ -177,8 +188,8 @@ public: /// inline TypeID getTypeID() const { return ID; } - /// getDescription - Return the string representation of the type... - const std::string &getDescription() const; + /// getDescription - Return the string representation of the type. + std::string getDescription() const; /// isInteger - True if this is an instance of IntegerType. /// @@ -189,7 +200,7 @@ public: /// bool isIntOrIntVector() const; - /// isFloatingPoint - Return true if this is one of the two floating point + /// isFloatingPoint - Return true if this is one of the five floating point /// types bool isFloatingPoint() const { return ID == FloatTyID || ID == DoubleTyID || ID == X86_FP80TyID || ID == FP128TyID || ID == PPC_FP128TyID; } @@ -204,7 +215,7 @@ public: inline bool isAbstract() const { return Abstract; } /// canLosslesslyBitCastTo - Return true if this type could be converted - /// with a lossless BitCast to type 'Ty'. For example, uint to int. BitCasts + /// with a lossless BitCast to type 'Ty'. For example, i8* to i32*. BitCasts /// are valid for types of the same size only where no re-interpretation of /// the bits is done. /// @brief Determine if this type could be losslessly bitcast to Ty @@ -266,20 +277,22 @@ public: /// This will return zero if the type does not have a size or is not a /// primitive type. /// + /// Note that this may not reflect the size of memory allocated for an + /// instance of the type or the number of bytes that are written when an + /// instance of the type is stored to memory. The TargetData class provides + /// additional query functions to provide this information. + /// unsigned getPrimitiveSizeInBits() const; - + + /// getScalarSizeInBits - If this is a vector type, return the + /// getPrimitiveSizeInBits value for the element type. Otherwise return the + /// getPrimitiveSizeInBits value for this type. + unsigned getScalarSizeInBits() const; + /// getFPMantissaWidth - Return the width of the mantissa of this type. This - /// is only valid on scalar floating point types. If the FP type does not + /// is only valid on floating point types. If the FP type does not /// have a stable mantissa (e.g. ppc long double), this method returns -1. - int getFPMantissaWidth() const { - assert(isFloatingPoint() && "Not a floating point type!"); - if (ID == FloatTyID) return 24; - if (ID == DoubleTyID) return 53; - if (ID == X86_FP80TyID) return 64; - if (ID == FP128TyID) return 113; - assert(ID == PPC_FP128TyID && "unknown fp type"); - return -1; - } + int getFPMantissaWidth() const; /// getForwardedType - Return the type that this type has been resolved to if /// it has been resolved to anything. This is used to implement the @@ -295,6 +308,10 @@ public: /// function. const Type *getVAArgsPromotedType() const; + /// getScalarType - If this is a vector type, return the element type, + /// otherwise return this. + const Type *getScalarType() const; + //===--------------------------------------------------------------------===// // Type Iteration support // @@ -326,7 +343,7 @@ public: //===--------------------------------------------------------------------===// // These are the builtin types that are always available... // - static const Type *VoidTy, *LabelTy, *FloatTy, *DoubleTy; + static const Type *VoidTy, *LabelTy, *FloatTy, *DoubleTy, *MetadataTy; static const Type *X86_FP80Ty, *FP128Ty, *PPC_FP128Ty; static const IntegerType *Int1Ty, *Int8Ty, *Int16Ty, *Int32Ty, *Int64Ty; @@ -335,7 +352,7 @@ public: void addRef() const { assert(isAbstract() && "Cannot add a reference to a non-abstract type!"); - ++RefCount; + sys::AtomicIncrement(&RefCount); } void dropRef() const { @@ -344,17 +361,15 @@ public: // If this is the last PATypeHolder using this object, and there are no // PATypeHandles using it, the type is dead, delete it now. - if (--RefCount == 0 && AbstractTypeUsers.empty()) + sys::cas_flag OldCount = sys::AtomicDecrement(&RefCount); + if (OldCount == 0 && AbstractTypeUsers.empty()) this->destroy(); } /// addAbstractTypeUser - Notify an abstract type that there is a new user of /// it. This function is called primarily by the PATypeHandle class. /// - void addAbstractTypeUser(AbstractTypeUser *U) const { - assert(isAbstract() && "addAbstractTypeUser: Current type not abstract!"); - AbstractTypeUsers.push_back(U); - } + void addAbstractTypeUser(AbstractTypeUser *U) const; /// removeAbstractTypeUser - Notify an abstract type that a user of the class /// no longer has a handle to the type. This function is called primarily by @@ -364,6 +379,10 @@ public: /// void removeAbstractTypeUser(AbstractTypeUser *U) const; + /// getPointerTo - Return a pointer to the current type. This is equivalent + /// to PointerType::get(Foo, AddrSpace). + PointerType *getPointerTo(unsigned AddrSpace = 0) const; + private: /// isSizedDerivedType - Derived types like structures and arrays are sized /// iff all of the members of the type are sized as well. Since asking for