//
// 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 VectorValType;
class IntegerValType;
class APInt;
+class LLVMContext;
+template<typename T> class ArrayRef;
class DerivedType : public Type {
friend class Type;
protected:
- explicit DerivedType(TypeID id) : Type(id) {}
+ explicit DerivedType(LLVMContext &C, TypeID id) : Type(C, id) {}
/// notifyUsesThatTypeBecameConcrete - Notify AbstractTypeUsers of this type
/// that the current type has transitioned from being abstract to being
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; }
+ // Methods for support type inquiry through isa, cast, and dyn_cast.
+ static inline bool classof(const DerivedType *) { return true; }
static inline bool classof(const Type *T) {
return T->isDerivedType();
}
/// 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 {
+ friend class LLVMContextImpl;
+
protected:
- explicit IntegerType(unsigned NumBits) : DerivedType(IntegerTyID) {
+ explicit IntegerType(LLVMContext &C, unsigned NumBits) :
+ DerivedType(C, IntegerTyID) {
setSubclassData(NumBits);
}
friend class TypeMap<IntegerValType, IntegerType>;
///< 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 const IntegerType *get(LLVMContext &C, unsigned NumBits);
/// @brief Get the number of bits in this IntegerType
unsigned getBitWidth() const { return getSubclassData(); }
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.
+ /// 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;
}
///
class FunctionType : public DerivedType {
friend class TypeMap<FunctionValType, FunctionType>;
- bool isVarArgs;
-
FunctionType(const FunctionType &); // Do not implement
const FunctionType &operator=(const FunctionType &); // Do not implement
- FunctionType(const Type *Result, const std::vector<const Type*> &Params,
+ FunctionType(const Type *Result, ArrayRef<const 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,
+ ArrayRef<const Type*> Params, bool isVarArg);
+
+ /// FunctionType::get - Create a FunctionType taking no parameters.
///
- 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
- );
+ static FunctionType *get(const Type *Result, bool isVarArg);
/// isValidReturnType - Return true if the specified type is valid as a return
/// type.
static bool isValidReturnType(const Type *RetTy);
- inline bool isVarArg() const { return isVarArgs; }
- inline const Type *getReturnType() const { return ContainedTys[0]; }
+ /// isValidArgumentType - Return true if the specified type is valid as an
+ /// argument type.
+ static bool isValidArgumentType(const Type *ArgTy);
+
+ bool isVarArg() const { return getSubclassData(); }
+ const 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]; }
- // Parameter type accessors...
+ // Parameter type accessors.
const Type *getParamType(unsigned i) const { return ContainedTys[i+1]; }
/// getNumParams - Return the number of fixed parameters this function type
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; }
+ // 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
+/// and VectorType.
class CompositeType : public DerivedType {
protected:
- inline explicit CompositeType(TypeID id) : DerivedType(id) { }
+ explicit CompositeType(LLVMContext &C, TypeID tid) : DerivedType(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;
+ const Type *getTypeAtIndex(const Value *V) const;
+ const Type *getTypeAtIndex(unsigned Idx) const;
+ 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.
///
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, ArrayRef<const Type*> Types, bool isPacked);
public:
/// 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);
+ static StructType *get(LLVMContext &Context, ArrayRef<const Type*> Elements,
+ bool isPacked = false);
+
+ /// StructType::get - Create an empty structure type.
+ ///
+ 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(const Type *elt1, ...) END_WITH_NULL;
+
+ /// isValidElementType - Return true if the specified type is valid as a
+ /// element type.
+ static bool isValidElementType(const Type *ElemTy);
- /// 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(const Type *type, ...) END_WITH_NULL;
+ bool isPacked() const { return getSubclassData() != 0 ? true : false; }
- // Iterator access to the elements
+ // 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(const StructType *Other) const {
+ return this == Other;
+ }
+
+
// Random access to the elements
unsigned getNumElements() const { return NumContainedTys; }
const Type *getElementType(unsigned N) const {
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 (0 != getSubclassData()) ? true : false; }
};
-
/// 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
/// components out in memory identically.
///
class SequentialType : public CompositeType {
- PATypeHandle ContainedType; ///< Storage for the single contained type
+ PATypeHandle ContainedType; ///< Storage for the single contained type.
SequentialType(const SequentialType &); // Do not implement!
const SequentialType &operator=(const SequentialType &); // Do not implement!
// avoiding warning: 'this' : used in base member initializer list
- SequentialType* this_() { return this; }
+ SequentialType *this_() { return this; }
protected:
- SequentialType(TypeID TID, const Type *ElType)
- : CompositeType(TID), ContainedType(ElType, this_()) {
- ContainedTys = &ContainedType;
+ SequentialType(TypeID TID, const Type *ElType)
+ : CompositeType(ElType->getContext(), TID), ContainedType(ElType, this_()) {
+ ContainedTys = &ContainedType;
NumContainedTys = 1;
}
public:
- inline const Type *getElementType() const { return ContainedTys[0]; }
-
- 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...
- ///
- virtual const Type *getTypeAtIndex(const Value *V) const {
- return ContainedTys[0];
- }
+ const Type *getElementType() 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>;
///
static ArrayType *get(const 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(const Type *ElemTy);
+
+ 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 *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>;
VectorType(const Type *ElType, unsigned NumEl);
public:
/// VectorType::get - This static method is the primary way to construct an
- /// VectorType
+ /// VectorType.
///
static VectorType *get(const Type *ElementType, unsigned NumElements);
///
static VectorType *getInteger(const VectorType *VTy) {
unsigned EltBits = VTy->getElementType()->getPrimitiveSizeInBits();
- const Type *EltTy = IntegerType::get(EltBits);
+ const 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(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);
+
/// @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>;
- unsigned AddressSpace;
-
+
PointerType(const PointerType &); // Do not implement
const PointerType &operator=(const PointerType &); // Do not implement
explicit PointerType(const Type *ElType, unsigned AddrSpace);
public:
- /// PointerType::get - This constructs a pointer to an object of the specified
+ /// 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
+
+ /// 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) {
+ 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; }
+ inline unsigned getAddressSpace() const { return getSubclassData(); }
// 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; }
+ // 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() == PointerTyID;
}
};
-/// OpaqueType - Class to represent abstract types
+/// OpaqueType - Class to represent opaque types.
///
class OpaqueType : public DerivedType {
+ friend class LLVMContextImpl;
OpaqueType(const OpaqueType &); // DO NOT IMPLEMENT
const OpaqueType &operator=(const OpaqueType &); // DO NOT IMPLEMENT
- OpaqueType();
+ OpaqueType(LLVMContext &C);
public:
- /// OpaqueType::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
- }
+ static OpaqueType *get(LLVMContext &C);
- // Implement support for 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->getTypeID() == OpaqueTyID;
}
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