//
// 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.
//
//===----------------------------------------------------------------------===//
//
class ArrayValType;
class StructValType;
class PointerValType;
-class PackedValType;
+class VectorValType;
+class IntegerValType;
+class APInt;
class DerivedType : public Type {
friend class Type;
protected:
- DerivedType(TypeID id) : Type(id) {}
+ explicit DerivedType(TypeID id) : Type(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; }
+ 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.
+/// @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
+ /// 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;
+ }
+};
+
/// 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
- };
- typedef std::vector<ParameterAttributes> ParamAttrsList;
-private:
friend class TypeMap<FunctionValType, FunctionType>;
bool isVarArgs;
- ParamAttrsList *ParamAttrs;
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);
+ bool IsVarArgs);
public:
/// FunctionType::get - This static method is the primary way of constructing
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.
+ bool isVarArg ///< Whether this is a variable argument length function
);
+
+ /// 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]; }
- 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); }
-
- /// 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;
- }
-
- /// @brief Return the number of parameter attributes this type has.
- unsigned getNumAttrs() const {
- return (ParamAttrs ? unsigned(ParamAttrs->size()) : 0);
- }
-
- /// @brief Convert a ParameterAttribute into its assembly text
- static std::string getParamAttrsText(ParameterAttributes Attr);
+ 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->getTypeID() == FunctionTyID;
}
/// 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
/// 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;
+ 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->getTypeID() == ArrayTyID ||
T->getTypeID() == StructTyID ||
T->getTypeID() == PointerTyID ||
- T->getTypeID() == PackedTyID;
+ T->getTypeID() == VectorTyID;
}
};
static StructType *get(const std::vector<const Type*> &Params,
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. To get
+ /// an empty struct, pass NULL, NULL.
+ static StructType *get(const Type *type, ...) 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(); }
+ 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];
}
/// 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(const Value *V) const;
+ virtual const Type *getTypeAtIndex(unsigned Idx) const;
virtual bool indexValid(const Value *V) const;
+ virtual bool indexValid(unsigned Idx) 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; }
+ static inline bool classof(const StructType *) { return true; }
static inline bool classof(const Type *T) {
return T->getTypeID() == StructTyID;
}
- bool isPacked() const { return getSubclassData(); }
+ 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:
inline const Type *getElementType() const { return ContainedTys[0]; }
virtual bool indexValid(const Value *V) const;
+ virtual bool indexValid(unsigned) const {
+ return true;
+ }
/// 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 {
+ virtual const Type *getTypeAtIndex(const Value *) const {
+ return ContainedTys[0];
+ }
+ virtual const Type *getTypeAtIndex(unsigned) const {
return ContainedTys[0];
}
// 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->getTypeID() == ArrayTyID ||
T->getTypeID() == PointerTyID ||
- T->getTypeID() == PackedTyID;
+ T->getTypeID() == VectorTyID;
}
};
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 ArrayType *) { return true; }
static inline bool classof(const Type *T) {
return T->getTypeID() == ArrayTyID;
}
};
-/// 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
- 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 Packed type.
+ /// 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(EltBits);
+ return VectorType::get(EltTy, VTy->getNumElements());
+ }
+
+ /// @brief Return the number of elements in the Vector type.
inline unsigned getNumElements() const { return NumElements; }
- /// @brief Return the number of bits in the Packed type.
+ /// @brief Return the number of bits in the Vector type.
inline unsigned getBitWidth() const {
return NumElements *getElementType()->getPrimitiveSizeInBits();
}
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 *) { return true; }
static inline bool classof(const Type *T) {
- return T->getTypeID() == PackedTyID;
+ return T->getTypeID() == VectorTyID;
}
};
///
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
- PointerType(const Type *ElType);
+ explicit PointerType(const Type *ElType, unsigned AddrSpace);
public:
- /// PointerType::get - This is the only way to construct a new pointer type.
- 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);
+ }
+
+ /// @brief Return the address space of the Pointer type.
+ inline unsigned getAddressSpace() const { return AddressSpace; }
// 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 PointerType *) { return true; }
static inline bool classof(const Type *T) {
return T->getTypeID() == PointerTyID;
}
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 OpaqueType *) { return true; }
static inline bool classof(const Type *T) {
return T->getTypeID() == OpaqueTyID;
}