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
}
};
+/// 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 {
+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
+ NoUnwindAttribute = 1 << 5 ///< Function doesn't unwind stack
+ };
+ 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);
+ bool IsVarArgs, const ParamAttrsList &Attrs);
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 = 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]; }
///
unsigned getNumParams() const { return unsigned(ContainedTys.size()-1); }
+ bool isStructReturn() const {
+ return (getNumParams() && paramHasAttr(1, StructRetAttribute));
+ }
+
+ /// 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);
+
// Implement the AbstractTypeUser interface.
virtual void refineAbstractType(const DerivedType *OldTy, const Type *NewTy);
virtual void typeBecameConcrete(const DerivedType *AbsTy);
/// 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, bool isPacked);
-
public:
/// StructType::get - This static method is the primary way to create a
/// StructType.
/// SequentialType - This is the superclass of the array, pointer and packed
/// 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.
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 Packed type.
+ /// @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 *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...
///
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