//
// 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 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/ADT/APInt.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 DerivedType : public Type {
- friend class Type;
-
-protected:
- DerivedType(TypeID id) : Type(id) {}
-
- /// 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:
-
- //===--------------------------------------------------------------------===//
- // Abstract Type handling methods - These types have special lifetimes, which
- // are managed by (add|remove)AbstractTypeUser. See comments in
- // AbstractTypeUser.h for more information.
-
- /// 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();
- }
-};
+class APInt;
+class LLVMContext;
+template<typename T> class ArrayRef;
+class StringRef;
/// 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.
+/// Int64Ty.
/// @brief Integer representation type
-class IntegerType : public DerivedType {
+class IntegerType : public Type {
+ friend class LLVMContextImpl;
+
protected:
- IntegerType(unsigned NumBits) : DerivedType(IntegerTyID) {
+ explicit IntegerType(LLVMContext &C, unsigned NumBits) : Type(C, IntegerTyID){
setSubclassData(NumBits);
}
- friend class TypeMap<IntegerValType, IntegerType>;
public:
/// This enum is just used to hold constants we need for IntegerType.
enum {
///< 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.
+ /// 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);
+ static 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
- /// sbyte/ubyte, 0xFFFF for shorts, etc.
+ /// i8, 0xFFFF for i16, etc.
uint64_t getBitMask() const {
- return ~uint64_t(0UL) >> (64-getPrimitiveSizeInBits());
+ return ~uint64_t(0UL) >> (64-getBitWidth());
+ }
+
+ /// getSignBit - Return a uint64_t with just the most significant bit set (the
+ /// sign bit, if the value is treated as a signed number).
+ uint64_t getSignBit() const {
+ return 1ULL << (getBitWidth()-1);
}
/// For example, this is 0xFF for an 8 bit integer, 0xFFFF for i16, etc.
/// @returns a bit mask with ones set for all the bits of this type.
/// @brief Get a bit mask for this type.
- APInt getMask() const {
- return APInt::getAllOnesValue(getBitWidth());
- }
+ APInt getMask() const;
/// This method determines if the width of this IntegerType is a power-of-2
- /// in terms of 8 bit bytes.
+ /// 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; }
+ // 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;
}
/// FunctionType - Class to represent function types
///
-class FunctionType : public DerivedType {
-public:
- /// Function parameters can have attributes to indicate how they should be
- /// treated by optimizations and code generation. This enumeration lists the
- /// set of possible attributes.
- /// @brief Function parameter attributes enumeration.
- enum ParameterAttributes {
- NoAttributeSet = 0, ///< No attribute value has been set
- ZExtAttribute = 1, ///< zero extended before/after call
- SExtAttribute = 1 << 1, ///< sign extended before/after call
- NoReturnAttribute = 1 << 2, ///< mark the function as not returning
- InRegAttribute = 1 << 3, ///< force argument to be passed in register
- StructRetAttribute= 1 << 4 ///< hidden pointer to structure to return
- };
- typedef std::vector<ParameterAttributes> ParamAttrsList;
-private:
- friend class TypeMap<FunctionValType, FunctionType>;
- bool isVarArgs;
- ParamAttrsList *ParamAttrs;
-
+class FunctionType : public Type {
FunctionType(const FunctionType &); // Do not implement
const FunctionType &operator=(const FunctionType &); // Do not implement
- FunctionType(const Type *Result, const std::vector<const Type*> &Params,
- bool IsVarArgs, const ParamAttrsList &Attrs);
+ FunctionType(Type *Result, ArrayRef<Type*> Params, bool IsVarArgs);
public:
/// FunctionType::get - This static method is the primary way of constructing
- /// a FunctionType.
+ /// 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 ContainedTys[0]; }
-
- 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]; }
+ static FunctionType *get(Type *Result,
+ ArrayRef<Type*> Params, bool isVarArg);
- /// getNumParams - Return the number of fixed parameters this function type
- /// requires. This does not consider varargs.
+ /// FunctionType::get - Create a FunctionType taking no parameters.
///
- unsigned getNumParams() const { return unsigned(ContainedTys.size()-1); }
-
- bool isStructReturn() const {
- return (getNumParams() && paramHasAttr(1, StructRetAttribute));
- }
+ static FunctionType *get(Type *Result, bool isVarArg);
- /// 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;
- }
+ /// isValidReturnType - Return true if the specified type is valid as a return
+ /// type.
+ static bool isValidReturnType(Type *RetTy);
- /// @brief Return the number of parameter attributes this type has.
- unsigned getNumAttrs() const {
- return (ParamAttrs ? unsigned(ParamAttrs->size()) : 0);
- }
+ /// isValidArgumentType - Return true if the specified type is valid as an
+ /// argument type.
+ static bool isValidArgumentType(Type *ArgTy);
+
+ bool isVarArg() const { return getSubclassData(); }
+ Type *getReturnType() const { return ContainedTys[0]; }
+
+ typedef Type::subtype_iterator param_iterator;
+ param_iterator param_begin() const { return ContainedTys + 1; }
+ param_iterator param_end() const { return &ContainedTys[NumContainedTys]; }
- /// @brief Convert a ParameterAttribute into its assembly text
- static std::string getParamAttrsText(ParameterAttributes Attr);
+ // Parameter type accessors.
+ Type *getParamType(unsigned i) const { return ContainedTys[i+1]; }
- // Implement the AbstractTypeUser interface.
- virtual void refineAbstractType(const DerivedType *OldTy, const Type *NewTy);
- virtual void typeBecameConcrete(const DerivedType *AbsTy);
+ /// getNumParams - Return the number of fixed parameters this function type
+ /// requires. This does not consider varargs.
+ ///
+ unsigned getNumParams() const { return NumContainedTys - 1; }
- // Methods for support type inquiry through isa, cast, and dyn_cast:
- static inline bool classof(const FunctionType *T) { return true; }
+ // Methods for support type inquiry through isa, cast, and dyn_cast.
+ static inline bool classof(const FunctionType *) { return true; }
static inline bool classof(const Type *T) {
return T->getTypeID() == FunctionTyID;
}
/// CompositeType - Common super class of ArrayType, StructType, PointerType
-/// and VectorType
-class CompositeType : public DerivedType {
+/// and VectorType.
+class CompositeType : public Type {
protected:
- inline CompositeType(TypeID id) : DerivedType(id) { }
+ explicit CompositeType(LLVMContext &C, TypeID tid) : Type(C, tid) { }
public:
/// 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;
+ Type *getTypeAtIndex(const Value *V);
+ Type *getTypeAtIndex(unsigned Idx);
+ bool indexValid(const Value *V) const;
+ bool indexValid(unsigned Idx) const;
- // Methods for support type inquiry through isa, cast, and dyn_cast:
- static inline bool classof(const CompositeType *T) { return true; }
+ // Methods for support type inquiry through isa, cast, and dyn_cast.
+ static inline bool classof(const CompositeType *) { return true; }
static inline bool classof(const Type *T) {
return T->getTypeID() == ArrayTyID ||
T->getTypeID() == StructTyID ||
};
-/// StructType - Class to represent struct types
+/// StructType - Class to represent struct types, both normal and packed.
+/// Besides being optionally packed, structs can be either "anonymous" or may
+/// have an identity. Anonymous structs are uniqued by structural equivalence,
+/// but types are each unique when created, and optionally have a name.
///
class StructType : public CompositeType {
- friend class TypeMap<StructValType, StructType>;
StructType(const StructType &); // Do not implement
const StructType &operator=(const StructType &); // Do not implement
- StructType(const std::vector<const Type*> &Types, bool isPacked);
+ StructType(LLVMContext &C)
+ : CompositeType(C, StructTyID), SymbolTableEntry(0) {}
+ enum {
+ // This is the contents of the SubClassData field.
+ SCDB_HasBody = 1,
+ SCDB_Packed = 2,
+ SCDB_IsAnonymous = 4
+ };
+
+ /// SymbolTableEntry - For a named struct that actually has a name, this is a
+ /// pointer to the symbol table entry (maintained by LLVMContext) for the
+ /// struct. This is null if the type is an anonymous struct or if it is
+ /// a named type that has an empty name.
+ ///
+ void *SymbolTableEntry;
public:
+ ~StructType() {
+ delete [] ContainedTys; // Delete the body.
+ }
+
+ /// StructType::createNamed - This creates a named struct with no body
+ /// specified. If the name is empty, it creates an unnamed struct, which has
+ /// a unique identity but no actual name.
+ static StructType *createNamed(LLVMContext &Context, StringRef Name);
+
+ static StructType *createNamed(StringRef Name, ArrayRef<Type*> Elements,
+ bool isPacked = false);
+ static StructType *createNamed(LLVMContext &Context, StringRef Name,
+ ArrayRef<Type*> Elements,
+ bool isPacked = false);
+ static StructType *createNamed(StringRef Name, Type *elt1, ...) END_WITH_NULL;
+
/// StructType::get - This static method is the primary way to create a
/// StructType.
+ static StructType *get(LLVMContext &Context, ArrayRef<Type*> Elements,
+ bool isPacked = false);
+
+ /// StructType::get - Create an empty structure type.
///
- static StructType *get(const std::vector<const Type*> &Params,
- bool isPacked=false);
+ static StructType *get(LLVMContext &Context, bool isPacked = false);
+
+ /// 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, and requires at least one
+ /// element type.
+ static StructType *get(Type *elt1, ...) END_WITH_NULL;
- // 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(); }
+ bool isPacked() const { return (getSubclassData() & SCDB_Packed) != 0; }
+
+ /// isAnonymous - Return true if this type is uniqued by structural
+ /// equivalence, false if it has an identity.
+ bool isAnonymous() const {return (getSubclassData() & SCDB_IsAnonymous) != 0;}
+
+ /// isOpaque - Return true if this is a type with an identity that has no body
+ /// specified yet. These prints as 'opaque' in .ll files.
+ bool isOpaque() const { return (getSubclassData() & SCDB_HasBody) == 0; }
+
+ /// hasName - Return true if this is a named struct that has a non-empty name.
+ bool hasName() const { return SymbolTableEntry != 0; }
+
+ /// getName - Return the name for this struct type if it has an identity.
+ /// This may return an empty string for an unnamed struct type. Do not call
+ /// this on an anonymous type.
+ StringRef getName() const;
+
+ /// setName - Change the name of this type to the specified name, or to a name
+ /// with a suffix if there is a collision. Do not call this on an anonymous
+ /// type.
+ void setName(StringRef Name);
+
+ /// setBody - Specify a body for an opaque type.
+ void setBody(ArrayRef<Type*> Elements, bool isPacked = false);
+ void setBody(Type *elt1, ...) END_WITH_NULL;
+
+ /// isValidElementType - Return true if the specified type is valid as a
+ /// element type.
+ static bool isValidElementType(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];}
+
+ /// isLayoutIdentical - Return true if this is layout identical to the
+ /// specified struct.
+ bool isLayoutIdentical(StructType *Other) const;
+
// 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!");
+ unsigned getNumElements() const { return NumContainedTys; }
+ Type *getElementType(unsigned N) const {
+ assert(N < NumContainedTys && "Element number out of range!");
return ContainedTys[N];
}
- /// 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;
-
- // 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 StructType *T) { return true; }
+ // Methods for support type inquiry through isa, cast, and dyn_cast.
+ static inline bool classof(const StructType *) { return true; }
static inline bool classof(const Type *T) {
return T->getTypeID() == StructTyID;
}
-
- bool isPacked() const { return getSubclassData(); }
};
-
-/// SequentialType - This is the superclass of the array, pointer and packed
+/// SequentialType - This is the superclass of the array, pointer and vector
/// type classes. All of these represent "arrays" in memory. The array type
/// represents a specifically sized array, pointer types are unsized/unknown
/// size arrays, vector types represent specifically sized arrays that
/// components out in memory identically.
///
class SequentialType : public CompositeType {
+ Type *ContainedType; ///< Storage for the single contained type.
SequentialType(const SequentialType &); // Do not implement!
const SequentialType &operator=(const SequentialType &); // Do not implement!
+
protected:
- SequentialType(TypeID TID, const Type *ElType) : CompositeType(TID) {
- ContainedTys.reserve(1);
- ContainedTys.push_back(PATypeHandle(ElType, this));
+ SequentialType(TypeID TID, Type *ElType)
+ : CompositeType(ElType->getContext(), TID), ContainedType(ElType) {
+ ContainedTys = &ContainedType;
+ NumContainedTys = 1;
}
public:
- inline const Type *getElementType() const { return ContainedTys[0]; }
-
- virtual bool indexValid(const Value *V) const;
+ Type *getElementType() const { return ContainedTys[0]; }
- /// 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 ContainedTys[0];
- }
-
- // Methods for support type inquiry through isa, cast, and dyn_cast:
- static inline bool classof(const SequentialType *T) { return true; }
+ // Methods for support type inquiry through isa, cast, and dyn_cast.
+ static inline bool classof(const SequentialType *) { return true; }
static inline bool classof(const Type *T) {
return T->getTypeID() == ArrayTyID ||
T->getTypeID() == PointerTyID ||
};
-/// ArrayType - Class to represent array types
+/// ArrayType - Class to represent array types.
///
class ArrayType : public SequentialType {
- friend class TypeMap<ArrayValType, ArrayType>;
uint64_t NumElements;
ArrayType(const ArrayType &); // Do not implement
const ArrayType &operator=(const ArrayType &); // Do not implement
- ArrayType(const Type *ElType, uint64_t NumEl);
+ ArrayType(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);
+ static ArrayType *get(Type *ElementType, uint64_t NumElements);
- inline uint64_t getNumElements() const { return NumElements; }
+ /// isValidElementType - Return true if the specified type is valid as a
+ /// element type.
+ static bool isValidElementType(Type *ElemTy);
- // Implement the AbstractTypeUser interface.
- virtual void refineAbstractType(const DerivedType *OldTy, const Type *NewTy);
- virtual void typeBecameConcrete(const DerivedType *AbsTy);
+ uint64_t getNumElements() const { return NumElements; }
- // Methods for support type inquiry through isa, cast, and dyn_cast:
- static inline bool classof(const ArrayType *T) { return true; }
+ // 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
+/// 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);
+ VectorType(Type *ElType, unsigned NumEl);
public:
/// VectorType::get - This static method is the primary way to construct an
- /// VectorType
+ /// VectorType.
+ ///
+ static VectorType *get(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 *get(const Type *ElementType, unsigned NumElements);
+ static VectorType *getInteger(VectorType *VTy) {
+ unsigned EltBits = VTy->getElementType()->getPrimitiveSizeInBits();
+ Type *EltTy = IntegerType::get(VTy->getContext(), EltBits);
+ return VectorType::get(EltTy, VTy->getNumElements());
+ }
+
+ /// 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(VectorType *VTy) {
+ unsigned EltBits = VTy->getElementType()->getPrimitiveSizeInBits();
+ 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(VectorType *VTy) {
+ unsigned EltBits = VTy->getElementType()->getPrimitiveSizeInBits();
+ assert((EltBits & 1) == 0 &&
+ "Cannot truncate vector element with odd bit-width");
+ 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(Type *ElemTy);
/// @brief Return the number of elements in the Vector type.
- inline unsigned getNumElements() const { return NumElements; }
+ unsigned getNumElements() const { return NumElements; }
/// @brief Return the number of bits in the Vector type.
- inline unsigned getBitWidth() const {
- return NumElements *getElementType()->getPrimitiveSizeInBits();
+ 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; }
+ // Methods for support type inquiry through isa, cast, and dyn_cast.
+ static inline bool classof(const VectorType *) { return true; }
static inline bool classof(const Type *T) {
return T->getTypeID() == VectorTyID;
}
};
-/// PointerType - Class to represent pointers
+/// 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
- PointerType(const Type *ElType);
+ explicit PointerType(Type *ElType, unsigned AddrSpace);
public:
- /// PointerType::get - This is the only way to construct a new pointer type.
- static PointerType *get(const Type *ElementType);
-
- // Implement the AbstractTypeUser interface.
- virtual void refineAbstractType(const DerivedType *OldTy, const Type *NewTy);
- virtual void typeBecameConcrete(const DerivedType *AbsTy);
-
- // 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->getTypeID() == PointerTyID;
+ /// PointerType::get - This constructs a pointer to an object of the specified
+ /// type in a numbered address space.
+ static PointerType *get(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(Type *ElementType) {
+ return PointerType::get(ElementType, 0);
}
-};
+ /// isValidElementType - Return true if the specified type is valid as a
+ /// element type.
+ static bool isValidElementType(Type *ElemTy);
-/// OpaqueType - Class to represent abstract types
-///
-class OpaqueType : public DerivedType {
- OpaqueType(const OpaqueType &); // DO NOT IMPLEMENT
- const OpaqueType &operator=(const OpaqueType &); // DO NOT IMPLEMENT
- OpaqueType();
-public:
- /// OpaqueType::get - Static factory method for the OpaqueType class...
- ///
- static OpaqueType *get() {
- return new OpaqueType(); // All opaque types are distinct
- }
+ /// @brief Return the address space of the Pointer type.
+ inline unsigned getAddressSpace() const { return getSubclassData(); }
- // 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; }
+ // 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->getTypeID() == OpaqueTyID;
+ return T->getTypeID() == PointerTyID;
}
};