//===-- 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...
//
#define LLVM_DERIVED_TYPES_H
#include "llvm/Type.h"
+#include "llvm/Support/DataTypes.h"
+
+namespace llvm {
+class Value;
template<class ValType, class TypeClass> class TypeMap;
class FunctionValType;
class ArrayValType;
class StructValType;
class PointerValType;
+class PackedValType;
class DerivedType : public Type, public AbstractTypeUser {
- /// RefCount - This counts the number of PATypeHolders that are pointing to
- /// this type. When this number falls to zero, if the type is abstract and
- /// has no AbstractTypeUsers, the type is deleted.
- ///
- mutable unsigned RefCount;
-
- // isRefining - Used for recursive types
- char isRefining;
-
// 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;
+ friend class Type;
protected:
- DerivedType(PrimitiveID id) : Type("", id), RefCount(0), isRefining(0) {
- }
+ DerivedType(TypeID id) : Type("", id) {}
~DerivedType() {
assert(AbstractTypeUsers.empty());
}
- // 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();
+ /// 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();
- // 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. This also removes the
- // type from the internal tables of available types.
- virtual void dropAllTypeUses(bool inMap) = 0;
-
+ void RefCountIsZero() const {
+ if (AbstractTypeUsers.empty())
+ delete this;
+ }
- void refineAbstractTypeToInternal(const Type *NewType, bool inMap);
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.
- //
+ /// 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);
}
- // 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 annihilated, because there is no way to get a reference to it ever
- // again.
- //
+ /// 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 annihilated, 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.
- //
- void refineAbstractTypeTo(const Type *NewType) {
- refineAbstractTypeToInternal(NewType, true);
- }
-
- void addRef() const {
- assert(isAbstract() && "Cannot add a reference to a non-abstract type!");
- ++RefCount;
- }
-
- void dropRef() const {
- assert(isAbstract() && "Cannot drop a refernce to a non-abstract type!");
- assert(RefCount && "No objects are currently referencing this object!");
-
- // 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())
- delete this;
- }
-
+ /// 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 { Value::dump(); }
+ 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));
- }
};
-
-
-struct FunctionType : public DerivedType {
- typedef std::vector<PATypeHandle> ParamTypes;
+/// FunctionType - Class to represent function types
+///
+class FunctionType : public DerivedType {
friend class TypeMap<FunctionValType, FunctionType>;
-private:
- PATypeHandle ResultType;
- ParamTypes ParamTys;
bool isVarArgs;
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,
+ /// 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);
- // 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. This also removes the
- // type from the internal tables of available types.
- virtual void dropAllTypeUses(bool inMap);
-
public:
+ /// FunctionType::get - This static method is the primary way of constructing
+ /// a FunctionType
+ ///
+ static FunctionType *get(const Type *Result,
+ const std::vector<const Type*> &Params,
+ bool isVarArg);
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]; }
-
- // getNumParams - Return the number of fixed parameters this function type
- // requires. This does not consider varargs.
- //
- unsigned getNumParams() const { return ParamTys.size(); }
+ 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(); }
+ // Parameter type accessors...
+ const Type *getParamType(unsigned i) const { return ContainedTys[i+1]; }
- virtual const Type *getContainedType(unsigned i) const {
- return i == 0 ? ResultType :
- (i <= ParamTys.size() ? ParamTys[i-1].get() : 0);
- }
- virtual unsigned getNumContainedTypes() const { return ParamTys.size()+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); }
- // 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 FunctionType *get(const Type *Result,
- const std::vector<const Type*> &Params,
- bool isVarArg);
+ 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<Type>(V));
+ return T->getTypeID() == FunctionTyID;
}
};
-// CompositeType - Common super class of ArrayType, StructType, and PointerType
-//
+/// CompositeType - Common super class of ArrayType, StructType, PointerType
+/// and PackedType
class CompositeType : public DerivedType {
protected:
- inline CompositeType(PrimitiveID id) : DerivedType(id) { }
+ inline 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<Type>(V));
+ return T->getTypeID() == ArrayTyID ||
+ T->getTypeID() == StructTyID ||
+ T->getTypeID() == PointerTyID ||
+ T->getTypeID() == PackedTyID;
}
};
-struct StructType : public CompositeType {
+/// StructType - Class to represent struct types
+///
+class StructType : public CompositeType {
friend class TypeMap<StructValType, StructType>;
- typedef std::vector<PATypeHandle> ElementTypes;
-
-private:
- ElementTypes ETypes; // Element types of struct
-
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...
+ /// 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);
- // 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. This also removes the
- // type from the internal tables of available types.
- virtual void dropAllTypeUses(bool inMap);
-
public:
- inline const ElementTypes &getElementTypes() const { return ETypes; }
+ /// StructType::get - This static method is the primary way to create a
+ /// StructType.
+ ///
+ static StructType *get(const std::vector<const Type*> &Params);
+
+ // 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(); }
- virtual const Type *getContainedType(unsigned i) const {
- return i < ETypes.size() ? ETypes[i].get() : 0;
+ // 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<Type>(V));
+ return T->getTypeID() == StructTyID;
}
};
-// 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, packed 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 ElementType;
-
- SequentialType(PrimitiveID TID, const Type *ElType)
- : CompositeType(TID), ElementType(PATypeHandle(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; }
+ 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<Type>(V));
+ return T->getTypeID() == ArrayTyID ||
+ T->getTypeID() == PointerTyID ||
+ T->getTypeID() == PackedTyID;
}
};
+/// ArrayType - Class to represent array types
+///
class ArrayType : public SequentialType {
friend class TypeMap<ArrayValType, ArrayType>;
- unsigned NumElements;
+ 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);
-
- // 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. This also removes the
- // type from the internal tables of available types.
- virtual void dropAllTypeUses(bool inMap);
+ /// 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, 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<Type>(V));
+ return T->getTypeID() == ArrayTyID;
}
};
+/// PackedType - Class to represent packed types
+///
+class PackedType : public SequentialType {
+ friend class TypeMap<PackedValType, PackedType>;
+ unsigned NumElements;
+ PackedType(const PackedType &); // Do not implement
+ const PackedType &operator=(const PackedType &); // Do not implement
+protected:
+ /// This should really be private, but it squelches a bogus warning
+ /// from GCC to make them protected: warning: `class PackedType' only
+ /// defines private constructors and has no friends
+ ///
+ /// Private ctor - Only can be created by a static member...
+ ///
+ PackedType(const Type *ElType, unsigned NumEl);
+public:
+ /// PackedType::get - This static method is the primary way to construct an
+ /// PackedType
+ ///
+ static PackedType *get(const Type *ElementType, unsigned NumElements);
+
+ inline unsigned getNumElements() const { return 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 PackedType *T) { return true; }
+ static inline bool classof(const Type *T) {
+ return T->getTypeID() == PackedTyID;
+ }
+};
+
+
+/// 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
+ // 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);
- // 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. This also removes the
- // type from the internal tables of available types.
- virtual void dropAllTypeUses(bool inMap);
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<Type>(V));
+ return T->getTypeID() == PointerTyID;
}
};
+/// OpaqueType - Class to represent abstract types
+///
class OpaqueType : public DerivedType {
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...
+ /// 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();
- // 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.
- virtual void dropAllTypeUses(bool inMap) {} // No type uses
-
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
}
- // 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) {
- // This class never uses other types!
- abort();
+ abort(); // FIXME: this is not really an AbstractTypeUser!
+ }
+ virtual void typeBecameConcrete(const DerivedType *AbsTy) {
+ abort(); // FIXME: this is not really an AbstractTypeUser!
}
-
- // Methods for support type inquiry through isa, cast, and dyn_cast:
+ // 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 dependent 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.
-//
-inline void PATypeHandle::addUser() {
- assert(Ty && "Type Handle has a null type!");
- if (Ty->isAbstract())
- cast<DerivedType>(Ty)->addAbstractTypeUser(User);
-}
-inline void PATypeHandle::removeUser() {
- if (Ty->isAbstract())
- cast<DerivedType>(Ty)->removeAbstractTypeUser(User);
-}
-
-inline void PATypeHandle::removeUserFromConcrete() {
- if (!Ty->isAbstract())
- cast<DerivedType>(Ty)->removeAbstractTypeUser(User);
-}
-
-// Define inline methods for PATypeHolder...
-
-inline void PATypeHolder::addRef() {
- if (Ty->isAbstract())
- cast<DerivedType>(Ty)->addRef();
-}
-
-inline void PATypeHolder::dropRef() {
- if (Ty->isAbstract())
- cast<DerivedType>(Ty)->dropRef();
-}
-
-/// get - This implements the forwarding part of the union-find algorithm for
-/// abstract types. Before every access to the Type*, we check to see if the
-/// type we are pointing to is forwarding to a new type. If so, we drop our
-/// reference to the type.
-inline const Type* PATypeHolder::get() const {
- const Type *NewTy = Ty->getForwardedType();
- if (!NewTy) return Ty;
- return *const_cast<PATypeHolder*>(this) = NewTy;
-}
+} // End llvm namespace
#endif
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