//===-- 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 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...
+// "function returning x taking (y,z) as parameters", etc...
//
// The implementations of these classes live in the Type.cpp file.
//
#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 VectorValType;
+class IntegerValType;
+class APInt;
+class LLVMContext;
class DerivedType : public Type {
- char isRefining; // Used for recursive types
-
- // 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:
- inline DerivedType(PrimitiveID id) : Type("", id) {
- isRefining = 0;
- }
- ~DerivedType() {
- assert(AbstractTypeUsers.empty());
- }
+ explicit DerivedType(LLVMContext &C, TypeID id) : Type(C, 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();
-
- // 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;
-
+ /// notifyUsesThatTypeBecameConcrete - Notify AbstractTypeUsers of this type
+ /// that the current type has transitioned from being abstract to being
+ /// concrete.
+ ///
+ void notifyUsesThatTypeBecameConcrete();
- void refineAbstractTypeToInternal(const Type *NewType, bool inMap);
+ /// 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 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);
- }
+ /// 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 DerivedType *) { 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 {
+ friend class LLVMContextImpl;
+
+protected:
+ explicit IntegerType(LLVMContext &C, unsigned NumBits) :
+ DerivedType(C, 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(LLVMContext &C, 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
+ /// i8, 0xFFFF for i16, 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 *) { return true; }
+ static inline bool classof(const Type *T) {
+ return T->getTypeID() == IntegerTyID;
+ }
+};
-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,
+ 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, ///< The result type
+ const std::vector<const Type*> &Params, ///< The types of the parameters
+ bool isVarArg ///< Whether this is a variable argument length function
+ );
+
+ /// FunctionType::get - Create a FunctionType taking no parameters.
+ ///
+ static FunctionType *get(
+ const Type *Result, ///< The result type
+ bool isVarArg ///< Whether this is a variable argument length function
+ ) {
+ return get(Result, std::vector<const Type *>(), isVarArg);
+ }
- inline bool isVarArg() const { return isVarArgs; }
- inline const Type *getReturnType() const { return ResultType; }
- inline const ParamTypes &getParamTypes() const { return ParamTys; }
-
- // Parameter type accessors...
- const Type *getParamType(unsigned i) const { return ParamTys[i]; }
+ /// isValidReturnType - Return true if the specified type is valid as a return
+ /// type.
+ static bool isValidReturnType(const Type *RetTy);
- // getNumParams - Return the number of fixed parameters this function type
- // requires. This does not consider varargs.
- //
- unsigned getNumParams() const { return ParamTys.size(); }
+ /// isValidArgumentType - Return true if the specified type is valid as an
+ /// argument type.
+ static bool isValidArgumentType(const Type *ArgTy);
+ inline bool isVarArg() const { return isVarArgs; }
+ inline const Type *getReturnType() const { return ContainedTys[0]; }
- 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; }
+ typedef Type::subtype_iterator param_iterator;
+ param_iterator param_begin() const { return ContainedTys + 1; }
+ param_iterator param_end() const { return &ContainedTys[NumContainedTys]; }
- // 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);
+ // Parameter type accessors...
+ const Type *getParamType(unsigned i) const { return ContainedTys[i+1]; }
- static FunctionType *get(const Type *Result,
- const std::vector<const Type*> &Params,
- bool isVarArg);
+ /// getNumParams - Return the number of fixed parameters this function type
+ /// requires. This does not consider varargs.
+ ///
+ unsigned getNumParams() const { return NumContainedTys - 1; }
+ // 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 FunctionType *) { 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 VectorType
class CompositeType : public DerivedType {
protected:
- inline CompositeType(PrimitiveID id) : DerivedType(id) { }
+ inline explicit CompositeType(LLVMContext &C, TypeID id) :
+ DerivedType(C, 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 const Type *getTypeAtIndex(unsigned Idx) 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;
-
+ virtual bool indexValid(unsigned Idx) 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 CompositeType *) { 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() == VectorTyID;
}
};
-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...
- 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);
-
+ StructType(LLVMContext &C,
+ const std::vector<const Type*> &Types, bool isPacked);
public:
- inline const ElementTypes &getElementTypes() const { return ETypes; }
+ /// StructType::get - This static method is the primary way to create a
+ /// StructType.
+ ///
+ static StructType *get(LLVMContext &Context,
+ const std::vector<const Type*> &Params,
+ bool isPacked=false);
+
+ /// StructType::get - Create an empty structure type.
+ ///
+ static StructType *get(LLVMContext &Context, bool isPacked=false) {
+ return get(Context, std::vector<const Type*>(), isPacked);
+ }
- virtual const Type *getContainedType(unsigned i) const {
- return i < ETypes.size() ? ETypes[i].get() : 0;
+ /// StructType::get - This static method is a convenience method for
+ /// creating structure types by specifying the elements as arguments.
+ /// Note that this method always returns a non-packed struct. To get
+ /// an empty struct, pass NULL, NULL.
+ static StructType *get(LLVMContext &Context,
+ const Type *type, ...) END_WITH_NULL;
+
+ /// isValidElementType - Return true if the specified type is valid as a
+ /// element type.
+ static bool isValidElementType(const Type *ElemTy);
+
+ // Iterator access to the elements
+ 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 NumContainedTys; }
+ const Type *getElementType(unsigned N) const {
+ assert(N < NumContainedTys && "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...
- //
- virtual const Type *getTypeAtIndex(const Value *V) const ;
+ /// 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 const Type *getTypeAtIndex(unsigned Idx) const;
virtual bool indexValid(const Value *V) const;
+ virtual bool indexValid(unsigned Idx) 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 StructType *) { return true; }
static inline bool classof(const Type *T) {
- return T->getPrimitiveID() == StructTyID;
+ return T->getTypeID() == StructTyID;
}
- static inline bool classof(const Value *V) {
- return isa<Type>(V) && classof(cast<Type>(V));
- }
-};
+ bool isPacked() const { return (0 != getSubclassData()) ? true : false; }
+};
-// 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 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, 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:
- PATypeHandle ElementType;
- SequentialType(PrimitiveID TID, const Type *ElType)
- : CompositeType(TID), ElementType(PATypeHandle(ElType, this)) {
+ // avoiding warning: 'this' : used in base member initializer list
+ SequentialType* this_() { return this; }
+protected:
+ SequentialType(TypeID TID, const Type *ElType)
+ : CompositeType(ElType->getContext(), TID), ContainedType(ElType, this_()) {
+ ContainedTys = &ContainedType;
+ NumContainedTys = 1;
}
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 bool indexValid(const Value *V) const;
+ virtual bool indexValid(unsigned) const {
+ return true;
}
- virtual unsigned getNumContainedTypes() const { return 1; }
- // 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();
+ /// 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 *) const {
+ return ContainedTys[0];
}
- virtual bool indexValid(const Value *V) const {
- return V->getType() == Type::LongTy; // Must be a 'long' index
+ virtual const Type *getTypeAtIndex(unsigned) const {
+ return ContainedTys[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 { 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 SequentialType *) { 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() == VectorTyID;
}
};
+/// 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
+ ArrayType(const Type *ElType, uint64_t NumEl);
+public:
+ /// ArrayType::get - This static method is the primary way to construct an
+ /// ArrayType
+ ///
+ static ArrayType *get(const Type *ElementType, uint64_t NumElements);
- // Private ctor - Only can be created by a static member...
- ArrayType(const Type *ElType, unsigned NumEl);
+ /// isValidElementType - Return true if the specified type is valid as a
+ /// element type.
+ static bool isValidElementType(const Type *ElemTy);
- // 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);
+ inline uint64_t 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 ArrayType *) { return true; }
+ static inline bool classof(const Type *T) {
+ 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:
- inline unsigned getNumElements() const { return NumElements; }
+ /// VectorType::get - This static method is the primary way to construct an
+ /// VectorType
+ ///
+ static VectorType *get(const Type *ElementType, unsigned NumElements);
+
+ /// VectorType::getInteger - This static method gets a VectorType with the
+ /// same number of elements as the input type, and the element type is an
+ /// integer type of the same width as the input element type.
+ ///
+ static VectorType *getInteger(const VectorType *VTy) {
+ unsigned EltBits = VTy->getElementType()->getPrimitiveSizeInBits();
+ const Type *EltTy = IntegerType::get(VTy->getContext(), EltBits);
+ return VectorType::get(EltTy, VTy->getNumElements());
+ }
- // 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);
+ /// VectorType::getExtendedElementVectorType - This static method is like
+ /// getInteger except that the element types are twice as wide as the
+ /// elements in the input type.
+ ///
+ static VectorType *getExtendedElementVectorType(const VectorType *VTy) {
+ unsigned EltBits = VTy->getElementType()->getPrimitiveSizeInBits();
+ const Type *EltTy = IntegerType::get(VTy->getContext(), EltBits * 2);
+ return VectorType::get(EltTy, VTy->getNumElements());
+ }
+
+ /// VectorType::getTruncatedElementVectorType - This static method is like
+ /// getInteger except that the element types are half as wide as the
+ /// elements in the input type.
+ ///
+ static VectorType *getTruncatedElementVectorType(const VectorType *VTy) {
+ unsigned EltBits = VTy->getElementType()->getPrimitiveSizeInBits();
+ assert((EltBits & 1) == 0 &&
+ "Cannot truncate vector element with odd bit-width");
+ const Type *EltTy = IntegerType::get(VTy->getContext(), EltBits / 2);
+ return VectorType::get(EltTy, VTy->getNumElements());
+ }
+
+ /// isValidElementType - Return true if the specified type is valid as a
+ /// element type.
+ static bool isValidElementType(const Type *ElemTy);
- static ArrayType *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 ArrayType *T) { return true; }
+ static inline bool classof(const VectorType *) { 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() == VectorTyID;
}
};
-
+/// PointerType - Class to represent pointers
+///
class PointerType : public SequentialType {
friend class TypeMap<PointerValType, PointerType>;
+ unsigned AddressSpace;
+
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);
-
- // 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);
+ explicit PointerType(const Type *ElType, unsigned AddrSpace);
public:
- // PointerType::get - Named constructor for pointer types...
- static PointerType *get(const Type *ElementType);
+ /// PointerType::get - This constructs a pointer to an object of the specified
+ /// type in a numbered address space.
+ static PointerType *get(const Type *ElementType, unsigned AddressSpace);
+
+ /// PointerType::getUnqual - This constructs a pointer to an object of the
+ /// specified type in the generic address space (address space zero).
+ static PointerType *getUnqual(const Type *ElementType) {
+ return PointerType::get(ElementType, 0);
+ }
+
+ /// isValidElementType - Return true if the specified type is valid as a
+ /// element type.
+ static bool isValidElementType(const Type *ElemTy);
+
+ /// @brief Return the address space of the Pointer type.
+ inline unsigned getAddressSpace() const { return AddressSpace; }
- // 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:
- static inline bool classof(const PointerType *T) { return true; }
+ // Implement support type inquiry through isa, cast, and dyn_cast:
+ static inline bool classof(const PointerType *) { 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 {
+ friend class LLVMContextImpl;
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();
-
- // 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
-
+ OpaqueType(LLVMContext &C);
public:
+ /// OpaqueType::get - Static factory method for the OpaqueType class...
+ ///
+ static OpaqueType *get(LLVMContext &C);
- // 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:
- static inline bool classof(const OpaqueType *T) { return true; }
+ // Implement support for type inquiry through isa, cast, and dyn_cast:
+ static inline bool classof(const OpaqueType *) { 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);
-}
+} // End llvm namespace
#endif
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