-//===-- llvm/DerivedTypes.h - Classes for handling data types ----*- C++ -*--=//
+//===-- llvm/DerivedTypes.h - Classes for handling data types ---*- C++ -*-===//
//
-// This file contains the declarations of classes that represent "derived
+// The LLVM Compiler Infrastructure
+//
+// This file was developed by the LLVM research group and is distributed under
+// the University of Illinois Open Source License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// This file contains the declarations of classes that represent "derived
// types". These are things like "arrays of x" or "structure of x, y, z" or
// "method returning x taking (y,z) as parameters", etc...
//
#ifndef LLVM_DERIVED_TYPES_H
#define LLVM_DERIVED_TYPES_H
-#include <assert.h>
-
#include "llvm/Type.h"
-class DerivedType : public Type {
- char isRefining; // Used for recursive types
+namespace llvm {
- // AbstractTypeUsers - Implement a list of the users that need to be notified
- // if I am a type, and I get resolved into a more concrete type.
- //
- ///// FIXME: kill mutable nonsense when Type's are not const
- mutable std::vector<AbstractTypeUser *> AbstractTypeUsers;
+class Value;
+template<class ValType, class TypeClass> class TypeMap;
+class FunctionValType;
+class ArrayValType;
+class StructValType;
+class PointerValType;
+class VectorValType;
+class IntegerValType;
+class APInt;
+
+class DerivedType : public Type {
+ friend class Type;
protected:
- inline DerivedType(PrimitiveID id) : Type("", id) {
- isRefining = 0;
- }
- ~DerivedType() {
- assert(AbstractTypeUsers.empty());
- }
+ explicit DerivedType(TypeID id) : Type(id) {}
- // typeIsRefined - Notify AbstractTypeUsers of this type that the current type
- // has been refined a bit. The pointer is still valid and still should be
- // used, but the subtypes have changed.
- //
- void typeIsRefined();
-
- // setDerivedTypeProperties - Based on the subtypes, set the name of this
- // type so that it is printed nicely by the type printer. Also calculate
- // whether this type is abstract or not. Used by the constructor and when
- // the type is refined.
- //
- void setDerivedTypeProperties();
+ /// notifyUsesThatTypeBecameConcrete - Notify AbstractTypeUsers of this type
+ /// that the current type has transitioned from being abstract to being
+ /// concrete.
+ ///
+ void notifyUsesThatTypeBecameConcrete();
+
+ /// dropAllTypeUses - When this (abstract) type is resolved to be equal to
+ /// another (more concrete) type, we must eliminate all references to other
+ /// types, to avoid some circular reference problems.
+ ///
+ void dropAllTypeUses();
public:
// are managed by (add|remove)AbstractTypeUser. See comments in
// AbstractTypeUser.h for more information.
- // 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;
-
- // 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
- // the PATypeHandle class. When there are no users of the abstract type, it
- // is anihilated, because there is no way to get a reference to it ever again.
- //
- void removeAbstractTypeUser(AbstractTypeUser *U) const;
-
- // refineAbstractTypeTo - This function is used to when it is discovered that
- // the 'this' abstract type is actually equivalent to the NewType specified.
- // This causes all users of 'this' to switch to reference the more concrete
- // type NewType and for 'this' to be deleted.
- //
+ /// refineAbstractTypeTo - This function is used to when it is discovered that
+ /// the 'this' abstract type is actually equivalent to the NewType specified.
+ /// This causes all users of 'this' to switch to reference the more concrete
+ /// type NewType and for 'this' to be deleted.
+ ///
void refineAbstractTypeTo(const Type *NewType);
+ void dump() const { Type::dump(); }
+
// Methods for support type inquiry through isa, cast, and dyn_cast:
static inline bool classof(const DerivedType *T) { return true; }
static inline bool classof(const Type *T) {
return T->isDerivedType();
}
- static inline bool classof(const Value *V) {
- return isa<Type>(V) && classof(cast<Type>(V));
- }
};
+/// 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<IntegerValType, IntegerType>;
+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 {
public:
- typedef std::vector<PATypeHandle<Type> > ParamTypes;
+ /// 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
+ NoUnwindAttribute = 1 << 5 ///< Function doesn't unwind stack
+ };
+ typedef std::vector<ParameterAttributes> ParamAttrsList;
private:
- PATypeHandle<Type> ResultType;
- ParamTypes ParamTys;
+ friend class TypeMap<FunctionValType, FunctionType>;
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<const Type*> &Params,
- bool IsVarArgs);
+ FunctionType(const Type *Result, const std::vector<const Type*> &Params,
+ bool IsVarArgs, const ParamAttrsList &Attrs);
public:
+ /// FunctionType::get - This static method is the primary way of constructing
+ /// a FunctionType.
+ ///
+ static FunctionType *get(
+ const Type *Result, ///< The result type
+ const std::vector<const Type*> &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.
+ );
inline bool isVarArg() const { return isVarArgs; }
- inline const Type *getReturnType() const { return ResultType; }
- inline const ParamTypes &getParamTypes() const { return ParamTys; }
+ inline const Type *getReturnType() const { return ContainedTys[0]; }
- // Parameter type accessors...
- const Type *getParamType(unsigned i) const { return ParamTys[i]; }
+ typedef std::vector<PATypeHandle>::const_iterator param_iterator;
+ param_iterator param_begin() const { return ContainedTys.begin()+1; }
+ param_iterator param_end() const { return ContainedTys.end(); }
- // getNumParams - Return the number of fixed parameters this function type
- // requires. This does not consider varargs.
- //
- unsigned getNumParams() const { return ParamTys.size(); }
+ // Parameter type accessors...
+ const Type *getParamType(unsigned i) const { return ContainedTys[i+1]; }
+ /// getNumParams - Return the number of fixed parameters this function type
+ /// requires. This does not consider varargs.
+ ///
+ unsigned getNumParams() const { return unsigned(ContainedTys.size()-1); }
- virtual const Type *getContainedType(unsigned i) const {
- return i == 0 ? ResultType :
- (i <= ParamTys.size() ? ParamTys[i-1].get() : 0);
+ 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;
}
- virtual unsigned getNumContainedTypes() const { return ParamTys.size()+1; }
- // refineAbstractType - Called when a contained type is found to be more
- // concrete - this could potentially change us from an abstract type to a
- // concrete type.
- //
- virtual void refineAbstractType(const DerivedType *OldTy, const Type *NewTy);
+ /// @brief Return the number of parameter attributes this type has.
+ unsigned getNumAttrs() const {
+ return (ParamAttrs ? unsigned(ParamAttrs->size()) : 0);
+ }
- static FunctionType *get(const Type *Result,
- const std::vector<const Type*> &Params,
- bool isVarArg);
+ /// @brief Convert a ParameterAttribute into its assembly text
+ static std::string getParamAttrsText(ParameterAttributes Attr);
+ // Implement the AbstractTypeUser interface.
+ virtual void refineAbstractType(const DerivedType *OldTy, const Type *NewTy);
+ virtual void typeBecameConcrete(const DerivedType *AbsTy);
// Methods for support type inquiry through isa, cast, and dyn_cast:
static inline bool classof(const FunctionType *T) { return true; }
static inline bool classof(const Type *T) {
- return T->getPrimitiveID() == FunctionTyID;
- }
- static inline bool classof(const Value *V) {
- return isa<Type>(V) && classof(cast<const Type>(V));
+ return T->getTypeID() == FunctionTyID;
}
};
-// CompositeType - Common super class of ArrayType, StructType, and PointerType
-//
+/// CompositeType - Common super class of ArrayType, StructType, PointerType
+/// and VectorType
class CompositeType : public DerivedType {
protected:
- inline CompositeType(PrimitiveID id) : DerivedType(id) { }
-
+ inline explicit CompositeType(TypeID id) : DerivedType(id) { }
public:
- // getTypeAtIndex - Given an index value into the type, return the type of the
- // element.
- //
+ /// getTypeAtIndex - Given an index value into the type, return the type of
+ /// the element.
+ ///
virtual const Type *getTypeAtIndex(const Value *V) const = 0;
virtual bool indexValid(const Value *V) const = 0;
- // getIndexType - Return the type required of indices for this composite.
- // For structures, this is ubyte, for arrays, this is uint
- //
- virtual const Type *getIndexType() const = 0;
-
-
// Methods for support type inquiry through isa, cast, and dyn_cast:
static inline bool classof(const CompositeType *T) { return true; }
static inline bool classof(const Type *T) {
- return T->getPrimitiveID() == ArrayTyID ||
- T->getPrimitiveID() == StructTyID ||
- T->getPrimitiveID() == PointerTyID;
- }
- static inline bool classof(const Value *V) {
- return isa<Type>(V) && classof(cast<const Type>(V));
+ return T->getTypeID() == ArrayTyID ||
+ T->getTypeID() == StructTyID ||
+ T->getTypeID() == PointerTyID ||
+ T->getTypeID() == VectorTyID;
}
};
+/// StructType - Class to represent struct types
+///
class StructType : public CompositeType {
-public:
- typedef std::vector<PATypeHandle<Type> > ElementTypes;
-
-private:
- ElementTypes ETypes; // Element types of struct
-
+ friend class TypeMap<StructValType, StructType>;
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<const Type*> &Types);
-
+ StructType(const std::vector<const Type*> &Types, bool isPacked);
public:
- inline const ElementTypes &getElementTypes() const { return ETypes; }
-
- virtual const Type *getContainedType(unsigned i) const {
- return i < ETypes.size() ? ETypes[i].get() : 0;
+ /// StructType::get - This static method is the primary way to create a
+ /// StructType.
+ ///
+ static StructType *get(const std::vector<const Type*> &Params,
+ bool isPacked=false);
+
+ // Iterator access to the elements
+ typedef std::vector<PATypeHandle>::const_iterator element_iterator;
+ element_iterator element_begin() const { return ContainedTys.begin(); }
+ element_iterator element_end() const { return ContainedTys.end(); }
+
+ // Random access to the elements
+ unsigned getNumElements() const { return unsigned(ContainedTys.size()); }
+ const Type *getElementType(unsigned N) const {
+ assert(N < ContainedTys.size() && "Element number out of range!");
+ return ContainedTys[N];
}
- virtual unsigned getNumContainedTypes() const { return ETypes.size(); }
- // getTypeAtIndex - Given an index value into the type, return the type of the
- // element. For a structure type, this must be a constant value...
- //
+ /// getTypeAtIndex - Given an index value into the type, return the type of
+ /// the element. For a structure type, this must be a constant value...
+ ///
virtual const Type *getTypeAtIndex(const Value *V) const ;
virtual bool indexValid(const Value *V) const;
- // getIndexType - Return the type required of indices for this composite.
- // For structures, this is ubyte, for arrays, this is uint
- //
- virtual const Type *getIndexType() const { return Type::UByteTy; }
-
- // refineAbstractType - Called when a contained type is found to be more
- // concrete - this could potentially change us from an abstract type to a
- // concrete type.
- //
+ // Implement the AbstractTypeUser interface.
virtual void refineAbstractType(const DerivedType *OldTy, const Type *NewTy);
-
- static StructType *get(const std::vector<const Type*> &Params);
+ virtual void typeBecameConcrete(const DerivedType *AbsTy);
// Methods for support type inquiry through isa, cast, and dyn_cast:
static inline bool classof(const StructType *T) { return true; }
static inline bool classof(const Type *T) {
- return T->getPrimitiveID() == StructTyID;
- }
- static inline bool classof(const Value *V) {
- return isa<Type>(V) && classof(cast<const Type>(V));
+ return T->getTypeID() == StructTyID;
}
+
+ bool isPacked() const { return getSubclassData(); }
};
-// SequentialType - This is the superclass of the array and pointer type
-// classes. Both of these represent "arrays" in memory. The array type
-// represents a specifically sized array, pointer types are unsized/unknown size
-// arrays. SequentialType holds the common features of both, which stem from
-// the fact that both lay their components out in memory identically.
-//
+/// 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, 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 {
SequentialType(const SequentialType &); // Do not implement!
const SequentialType &operator=(const SequentialType &); // Do not implement!
protected:
- PATypeHandle<Type> ElementType;
-
- SequentialType(PrimitiveID TID, const Type *ElType)
- : CompositeType(TID), ElementType(PATypeHandle<Type>(ElType, this)) {
+ SequentialType(TypeID TID, const Type *ElType) : CompositeType(TID) {
+ ContainedTys.reserve(1);
+ ContainedTys.push_back(PATypeHandle(ElType, this));
}
-public:
- inline const Type *getElementType() const { return ElementType; }
+public:
+ inline const Type *getElementType() const { return ContainedTys[0]; }
- virtual const Type *getContainedType(unsigned i) const {
- return i == 0 ? ElementType.get() : 0;
- }
- virtual unsigned getNumContainedTypes() const { return 1; }
+ virtual bool indexValid(const Value *V) const;
- // getTypeAtIndex - Given an index value into the type, return the type of the
- // element. For sequential types, there is only one subtype...
- //
+ /// getTypeAtIndex - Given an index value into the type, return the type of
+ /// the element. For sequential types, there is only one subtype...
+ ///
virtual const Type *getTypeAtIndex(const Value *V) const {
- return ElementType.get();
+ return ContainedTys[0];
}
- virtual bool indexValid(const Value *V) const {
- return V->getType() == Type::LongTy; // Must be a 'long' index
- }
-
- // getIndexType() - Return the type required of indices for this composite.
- // For structures, this is ubyte, for arrays, this is uint
- //
- virtual const Type *getIndexType() const { return Type::LongTy; }
// Methods for support type inquiry through isa, cast, and dyn_cast:
static inline bool classof(const SequentialType *T) { return true; }
static inline bool classof(const Type *T) {
- return T->getPrimitiveID() == ArrayTyID ||
- T->getPrimitiveID() == PointerTyID;
- }
- static inline bool classof(const Value *V) {
- return isa<Type>(V) && classof(cast<const Type>(V));
+ return T->getTypeID() == ArrayTyID ||
+ T->getTypeID() == PointerTyID ||
+ T->getTypeID() == VectorTyID;
}
};
+/// ArrayType - Class to represent array types
+///
class ArrayType : public SequentialType {
- unsigned NumElements;
+ friend class TypeMap<ArrayValType, ArrayType>;
+ uint64_t NumElements;
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, unsigned NumEl);
+ ArrayType(const Type *ElType, uint64_t NumEl);
public:
- inline unsigned getNumElements() const { return NumElements; }
+ /// ArrayType::get - This static method is the primary way to construct an
+ /// ArrayType
+ ///
+ static ArrayType *get(const Type *ElementType, uint64_t NumElements);
- // refineAbstractType - Called when a contained type is found to be more
- // concrete - this could potentially change us from an abstract type to a
- // concrete type.
- //
- virtual void refineAbstractType(const DerivedType *OldTy, const Type *NewTy);
+ inline uint64_t getNumElements() const { return NumElements; }
- static ArrayType *get(const Type *ElementType, unsigned NumElements);
+ // Implement the AbstractTypeUser interface.
+ virtual void refineAbstractType(const DerivedType *OldTy, const Type *NewTy);
+ virtual void typeBecameConcrete(const DerivedType *AbsTy);
// Methods for support type inquiry through isa, cast, and dyn_cast:
static inline bool classof(const ArrayType *T) { return true; }
static inline bool classof(const Type *T) {
- return T->getPrimitiveID() == ArrayTyID;
- }
- static inline bool classof(const Value *V) {
- return isa<Type>(V) && classof(cast<const Type>(V));
+ return T->getTypeID() == ArrayTyID;
}
};
+/// VectorType - Class to represent vector types
+///
+class VectorType : public SequentialType {
+ friend class TypeMap<VectorValType, VectorType>;
+ unsigned NumElements;
+
+ VectorType(const VectorType &); // Do not implement
+ const VectorType &operator=(const VectorType &); // Do not implement
+ VectorType(const Type *ElType, unsigned NumEl);
+public:
+ /// VectorType::get - This static method is the primary way to construct an
+ /// VectorType
+ ///
+ static VectorType *get(const Type *ElementType, unsigned NumElements);
+
+ /// @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 {
+ return NumElements *getElementType()->getPrimitiveSizeInBits();
+ }
+
+ // Implement the AbstractTypeUser interface.
+ virtual void refineAbstractType(const DerivedType *OldTy, const Type *NewTy);
+ virtual void typeBecameConcrete(const DerivedType *AbsTy);
+ // Methods for support type inquiry through isa, cast, and dyn_cast:
+ static inline bool classof(const VectorType *T) { return true; }
+ static inline bool classof(const Type *T) {
+ return T->getTypeID() == VectorTyID;
+ }
+};
+
+/// PointerType - Class to represent pointers
+///
class PointerType : public SequentialType {
+ friend class TypeMap<PointerValType, PointerType>;
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 - Named constructor for pointer types...
+ /// PointerType::get - This is the only way to construct a new pointer type.
static PointerType *get(const Type *ElementType);
- // refineAbstractType - Called when a contained type is found to be more
- // concrete - this could potentially change us from an abstract type to a
- // concrete type.
- //
+ // Implement the AbstractTypeUser interface.
virtual void refineAbstractType(const DerivedType *OldTy, const Type *NewTy);
+ virtual void typeBecameConcrete(const DerivedType *AbsTy);
- // Methods for support type inquiry through isa, cast, and dyn_cast:
+ // Implement support type inquiry through isa, cast, and dyn_cast:
static inline bool classof(const PointerType *T) { return true; }
static inline bool classof(const Type *T) {
- return T->getPrimitiveID() == PointerTyID;
- }
- static inline bool classof(const Value *V) {
- return isa<Type>(V) && classof(cast<const Type>(V));
+ return T->getTypeID() == PointerTyID;
}
};
+/// OpaqueType - Class to represent abstract types
+///
class OpaqueType : public DerivedType {
-private:
- 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(const OpaqueType &); // DO NOT IMPLEMENT
+ const OpaqueType &operator=(const OpaqueType &); // DO NOT IMPLEMENT
OpaqueType();
-
public:
-
- // get - Static factory method for the OpaqueType class...
+ /// OpaqueType::get - Static factory method for the OpaqueType class...
+ ///
static OpaqueType *get() {
return new OpaqueType(); // All opaque types are distinct
}
- // Methods for support type inquiry through isa, cast, and dyn_cast:
+ // 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) {
- return T->getPrimitiveID() == OpaqueTyID;
- }
- static inline bool classof(const Value *V) {
- return isa<Type>(V) && classof(cast<Type>(V));
+ return T->getTypeID() == OpaqueTyID;
}
};
-
-// Define some inline methods for the AbstractTypeUser.h:PATypeHandle class.
-// These are defined here because they MUST be inlined, yet are dependant on
-// the definition of the Type class. Of course Type derives from Value, which
-// contains an AbstractTypeUser instance, so there is no good way to factor out
-// the code. Hence this bit of uglyness.
-//
-template <class TypeSubClass> void PATypeHandle<TypeSubClass>::addUser() {
- assert(Ty && "Type Handle has a null type!");
- if (Ty->isAbstract())
- cast<DerivedType>(Ty)->addAbstractTypeUser(User);
-}
-template <class TypeSubClass> void PATypeHandle<TypeSubClass>::removeUser() {
- if (Ty->isAbstract())
- cast<DerivedType>(Ty)->removeAbstractTypeUser(User);
-}
-
-template <class TypeSubClass>
-void PATypeHandle<TypeSubClass>::removeUserFromConcrete() {
- if (!Ty->isAbstract())
- cast<DerivedType>(Ty)->removeAbstractTypeUser(User);
-}
+} // End llvm namespace
#endif