#define LLVM_DERIVED_TYPES_H
#include "llvm/Type.h"
-#include "llvm/Support/DataTypes.h"
namespace llvm {
class ArrayValType;
class StructValType;
class PointerValType;
-class PackedValType;
+class VectorValType;
+class IntegerValType;
+class APInt;
+class ParamAttrsList;
-class DerivedType : public Type, public AbstractTypeUser {
- // 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.
- //
- mutable std::vector<AbstractTypeUser *> AbstractTypeUsers;
+class DerivedType : public Type {
friend class Type;
protected:
- DerivedType(TypeID id) : Type("", id) {}
- ~DerivedType() {
- assert(AbstractTypeUsers.empty());
- }
+ explicit DerivedType(TypeID id) : Type(id) {}
/// notifyUsesThatTypeBecameConcrete - Notify AbstractTypeUsers of this type
/// that the current type has transitioned from being abstract to being
///
void dropAllTypeUses();
- void RefCountIsZero() const {
- if (AbstractTypeUsers.empty())
- delete this;
- }
-
-
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 {
- 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.
- ///
- 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
}
};
+/// Class to represent integer types. Note that this class is also used to
+/// represent the built-in integer types: Int1Ty, Int8Ty, Int16Ty, Int32Ty and
+/// Int64Ty.
+/// @brief Integer representation type
+class IntegerType : public DerivedType {
+protected:
+ explicit IntegerType(unsigned NumBits) : DerivedType(IntegerTyID) {
+ setSubclassData(NumBits);
+ }
+ friend class TypeMap<IntegerValType, IntegerType>;
+public:
+ /// This enum is just used to hold constants we need for IntegerType.
+ enum {
+ MIN_INT_BITS = 1, ///< Minimum number of bits that can be specified
+ MAX_INT_BITS = (1<<23)-1 ///< Maximum number of bits that can be specified
+ ///< Note that bit width is stored in the Type classes SubclassData field
+ ///< which has 23 bits. This yields a maximum bit width of 8,388,607 bits.
+ };
+
+ /// This static method is the primary way of constructing an IntegerType.
+ /// If an IntegerType with the same NumBits value was previously instantiated,
+ /// that instance will be returned. Otherwise a new one will be created. Only
+ /// one instance with a given NumBits value is ever created.
+ /// @brief Get or create an IntegerType instance.
+ static const IntegerType* get(unsigned NumBits);
+
+ /// @brief Get the number of bits in this IntegerType
+ unsigned getBitWidth() const { return getSubclassData(); }
+
+ /// getBitMask - Return a bitmask with ones set for all of the bits
+ /// that can be set by an unsigned version of this type. This is 0xFF for
+ /// sbyte/ubyte, 0xFFFF for shorts, etc.
+ uint64_t getBitMask() const {
+ return ~uint64_t(0UL) >> (64-getBitWidth());
+ }
+
+ /// getSignBit - Return a uint64_t with just the most significant bit set (the
+ /// sign bit, if the value is treated as a signed number).
+ uint64_t getSignBit() const {
+ return 1ULL << (getBitWidth()-1);
+ }
+
+ /// For example, this is 0xFF for an 8 bit integer, 0xFFFF for i16, etc.
+ /// @returns a bit mask with ones set for all the bits of this type.
+ /// @brief Get a bit mask for this type.
+ APInt getMask() const;
+
+ /// This method determines if the width of this IntegerType is a power-of-2
+ /// in terms of 8 bit bytes.
+ /// @returns true if this is a power-of-2 byte width.
+ /// @brief Is this a power-of-2 byte-width IntegerType ?
+ bool isPowerOf2ByteWidth() const;
+
+ // Methods for support type inquiry through isa, cast, and dyn_cast:
+ static inline bool classof(const IntegerType *T) { return true; }
+ static inline bool classof(const Type *T) {
+ return T->getTypeID() == IntegerTyID;
+ }
+};
+
/// FunctionType - Class to represent function types
///
class FunctionType : public DerivedType {
friend class TypeMap<FunctionValType, FunctionType>;
bool isVarArgs;
+ const ParamAttrsList *ParamAttrs;
FunctionType(const FunctionType &); // Do not implement
const FunctionType &operator=(const FunctionType &); // Do not implement
-protected:
- /// This should really be private, but it squelches a bogus warning
- /// from GCC to make them protected: warning: `class FunctionType' only
- /// defines private constructors and has no friends
- ///
- /// Private ctor - Only can be created by a static member...
- ///
FunctionType(const Type *Result, const std::vector<const Type*> &Params,
- bool IsVarArgs);
+ bool IsVarArgs, const ParamAttrsList *Attrs = 0);
public:
/// FunctionType::get - This static method is the primary way of constructing
- /// a FunctionType
+ /// a FunctionType.
///
- static FunctionType *get(const Type *Result,
- const std::vector<const Type*> &Params,
- bool isVarArg);
+ 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 = 0
+ ///< 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. This argument must be on the heap and FunctionType
+ ///< owns it after its passed here.
+ );
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(); }
+ 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...
const Type *getParamType(unsigned i) const { return ContainedTys[i+1]; }
/// getNumParams - Return the number of fixed parameters this function type
/// requires. This does not consider varargs.
///
- unsigned getNumParams() const { return unsigned(ContainedTys.size()-1); }
+ unsigned getNumParams() const { return NumContainedTys - 1; }
+
+ bool isStructReturn() const;
+
+ /// 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
+ const ParamAttrsList *getParamAttrs() const { return ParamAttrs; }
// Implement the AbstractTypeUser interface.
virtual void refineAbstractType(const DerivedType *OldTy, const Type *NewTy);
/// CompositeType - Common super class of ArrayType, StructType, PointerType
-/// and PackedType
+/// and VectorType
class CompositeType : public DerivedType {
protected:
- inline CompositeType(TypeID id) : DerivedType(id) { }
+ inline explicit CompositeType(TypeID id) : DerivedType(id) { }
public:
/// getTypeAtIndex - Given an index value into the type, return the type of
return T->getTypeID() == ArrayTyID ||
T->getTypeID() == StructTyID ||
T->getTypeID() == PointerTyID ||
- T->getTypeID() == PackedTyID;
+ T->getTypeID() == VectorTyID;
}
};
friend class TypeMap<StructValType, StructType>;
StructType(const StructType &); // Do not implement
const StructType &operator=(const StructType &); // Do not implement
-
-protected:
- /// This should really be private, but it squelches a bogus warning
- /// from GCC to make them protected: warning: `class StructType' only
- /// defines private constructors and has no friends
- ///
- /// Private ctor - Only can be created by a static member...
- ///
- StructType(const std::vector<const Type*> &Types);
-
+ StructType(const std::vector<const Type*> &Types, bool isPacked);
public:
/// StructType::get - This static method is the primary way to create a
/// StructType.
///
- static StructType *get(const std::vector<const Type*> &Params);
+ static StructType *get(const std::vector<const Type*> &Params,
+ bool isPacked=false);
// Iterator access to the elements
- typedef std::vector<PATypeHandle>::const_iterator element_iterator;
- element_iterator element_begin() const { return ContainedTys.begin(); }
- element_iterator element_end() const { return ContainedTys.end(); }
+ 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 unsigned(ContainedTys.size()); }
+ unsigned getNumElements() const { return NumContainedTys; }
const Type *getElementType(unsigned N) const {
- assert(N < ContainedTys.size() && "Element number out of range!");
+ assert(N < NumContainedTys && "Element number out of range!");
return ContainedTys[N];
}
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 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, packed types represent specifically sized arrays that
+/// 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!
+
+ // avoiding warning: 'this' : used in base member initializer list
+ SequentialType* this_() { return this; }
protected:
- SequentialType(TypeID TID, const Type *ElType) : CompositeType(TID) {
- ContainedTys.reserve(1);
- ContainedTys.push_back(PATypeHandle(ElType, this));
+ SequentialType(TypeID TID, const Type *ElType)
+ : CompositeType(TID), ContainedType(ElType, this_()) {
+ ContainedTys = &ContainedType;
+ NumContainedTys = 1;
}
public:
static inline bool classof(const Type *T) {
return T->getTypeID() == ArrayTyID ||
T->getTypeID() == PointerTyID ||
- T->getTypeID() == PackedTyID;
+ T->getTypeID() == VectorTyID;
}
};
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, uint64_t NumEl);
-
public:
/// ArrayType::get - This static method is the primary way to construct an
/// ArrayType
}
};
-/// PackedType - Class to represent packed types
+/// VectorType - Class to represent vector types
///
-class PackedType : public SequentialType {
- friend class TypeMap<PackedValType, PackedType>;
+class VectorType : public SequentialType {
+ friend class TypeMap<VectorValType, VectorType>;
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);
-
+ VectorType(const VectorType &); // Do not implement
+ const VectorType &operator=(const VectorType &); // Do not implement
+ VectorType(const Type *ElType, unsigned NumEl);
public:
- /// PackedType::get - This static method is the primary way to construct an
- /// PackedType
+ /// VectorType::get - This static method is the primary way to construct an
+ /// VectorType
///
- static PackedType *get(const Type *ElementType, unsigned NumElements);
+ static VectorType *get(const Type *ElementType, unsigned NumElements);
+ /// @brief Return the number of elements in the Vector type.
inline unsigned getNumElements() const { return NumElements; }
+ /// @brief Return the number of bits in the Vector type.
+ inline unsigned getBitWidth() const {
+ return NumElements *getElementType()->getPrimitiveSizeInBits();
+ }
+
// Implement the AbstractTypeUser interface.
virtual void refineAbstractType(const DerivedType *OldTy, const Type *NewTy);
virtual void typeBecameConcrete(const DerivedType *AbsTy);
// Methods for support type inquiry through isa, cast, and dyn_cast:
- static inline bool classof(const PackedType *T) { return true; }
+ static inline bool classof(const VectorType *T) { return true; }
static inline bool classof(const Type *T) {
- return T->getTypeID() == PackedTyID;
+ return T->getTypeID() == VectorTyID;
}
};
friend class TypeMap<PointerValType, PointerType>;
PointerType(const PointerType &); // Do not implement
const PointerType &operator=(const PointerType &); // Do not implement
-protected:
- // This should really be private, but it squelches a bogus warning
- // from GCC to make them protected: warning: `class PointerType' only
- // defines private constructors and has no friends
-
- // Private ctor - Only can be created by a static member...
- PointerType(const Type *ElType);
-
+ explicit PointerType(const Type *ElType);
public:
/// PointerType::get - This is the only way to construct a new pointer type.
static PointerType *get(const Type *ElementType);
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...
OpaqueType();
-
public:
/// OpaqueType::get - Static factory method for the OpaqueType class...
///
return new OpaqueType(); // All opaque types are distinct
}
- // Implement the AbstractTypeUser interface.
- virtual void refineAbstractType(const DerivedType *OldTy, const Type *NewTy) {
- abort(); // FIXME: this is not really an AbstractTypeUser!
- }
- virtual void typeBecameConcrete(const DerivedType *AbsTy) {
- abort(); // FIXME: this is not really an AbstractTypeUser!
- }
-
// Implement support for type inquiry through isa, cast, and dyn_cast:
static inline bool classof(const OpaqueType *T) { return true; }
static inline bool classof(const Type *T) {
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