#include "llvm/AbstractTypeUser.h"
#include "llvm/Support/Casting.h"
#include "llvm/Support/DataTypes.h"
+#include "llvm/Support/Streams.h"
#include "llvm/ADT/GraphTraits.h"
#include "llvm/ADT/iterator"
#include <string>
namespace llvm {
-class ArrayType;
class DerivedType;
-class FunctionType;
-class OpaqueType;
class PointerType;
-class StructType;
-class PackedType;
+class IntegerType;
class TypeMapBase;
/// This file contains the declaration of the Type class. For more "Type" type
///
enum TypeID {
// PrimitiveTypes .. make sure LastPrimitiveTyID stays up to date
- VoidTyID = 0 , BoolTyID, // 0, 1: Basics...
- UByteTyID , SByteTyID, // 2, 3: 8 bit types...
- UShortTyID , ShortTyID, // 4, 5: 16 bit types...
- UIntTyID , IntTyID, // 6, 7: 32 bit types...
- ULongTyID , LongTyID, // 8, 9: 64 bit types...
- FloatTyID , DoubleTyID, // 10,11: Floating point types...
- LabelTyID , // 12 : Labels...
+ VoidTyID = 0, ///< 0: type with no size
+ FloatTyID, ///< 1: 32 bit floating point type
+ DoubleTyID, ///< 2: 64 bit floating point type
+ LabelTyID, ///< 3: Labels
// Derived types... see DerivedTypes.h file...
// Make sure FirstDerivedTyID stays up to date!!!
- FunctionTyID , StructTyID, // Functions... Structs...
- ArrayTyID , PointerTyID, // Array... pointer...
- OpaqueTyID, // Opaque type instances...
- PackedTyID, // SIMD 'packed' format...
- //...
+ IntegerTyID, ///< 4: Arbitrary bit width integers
+ FunctionTyID, ///< 5: Functions
+ StructTyID, ///< 6: Structures
+ PackedStructTyID,///< 7: Packed Structure. This is for bytecode only
+ ArrayTyID, ///< 8: Arrays
+ PointerTyID, ///< 9: Pointers
+ OpaqueTyID, ///< 10: Opaque: type with unknown structure
+ PackedTyID, ///< 11: SIMD 'packed' format, or other vector type
NumTypeIDs, // Must remain as last defined ID
LastPrimitiveTyID = LabelTyID,
- FirstDerivedTyID = FunctionTyID
+ FirstDerivedTyID = IntegerTyID
};
private:
TypeID ID : 8; // The current base type of this type.
bool Abstract : 1; // True if type contains an OpaqueType
+ unsigned SubclassData : 23; //Space for subclasses to store data
/// RefCount - This counts the number of PATypeHolders that are pointing to
/// this type. When this number falls to zero, if the type is abstract and
const Type *getForwardedTypeInternal() const;
protected:
Type(const char *Name, TypeID id);
- Type(TypeID id) : ID(id), Abstract(false), RefCount(0), ForwardType(0) {}
+ Type(TypeID id) : ID(id), Abstract(false), SubclassData(0), RefCount(0),
+ ForwardType(0) {}
virtual ~Type() {
assert(AbstractTypeUsers.empty());
}
unsigned getRefCount() const { return RefCount; }
+ unsigned getSubclassData() const { return SubclassData; }
+ void setSubclassData(unsigned val) { SubclassData = val; }
+
/// ForwardType - This field is used to implement the union find scheme for
/// abstract types. When types are refined to other types, this field is set
/// to the more refined type. Only abstract types can be forwarded.
mutable std::vector<AbstractTypeUser *> AbstractTypeUsers;
public:
void print(std::ostream &O) const;
+ void print(std::ostream *O) const { if (O) print(*O); }
/// @brief Debugging support: print to stderr
void dump() const;
/// getDescription - Return the string representation of the type...
const std::string &getDescription() const;
- /// isSigned - Return whether an integral numeric type is signed. This is
- /// true for SByteTy, ShortTy, IntTy, LongTy. Note that this is not true for
- /// Float and Double.
- ///
- bool isSigned() const {
- return ID == SByteTyID || ID == ShortTyID ||
- ID == IntTyID || ID == LongTyID;
- }
-
- /// isUnsigned - Return whether a numeric type is unsigned. This is not quite
- /// the complement of isSigned... nonnumeric types return false as they do
- /// with isSigned. This returns true for UByteTy, UShortTy, UIntTy, and
- /// ULongTy
- ///
- bool isUnsigned() const {
- return ID == UByteTyID || ID == UShortTyID ||
- ID == UIntTyID || ID == ULongTyID;
- }
-
- /// isInteger - Equivalent to isSigned() || isUnsigned()
- ///
- bool isInteger() const { return ID >= UByteTyID && ID <= LongTyID; }
-
- /// isIntegral - Returns true if this is an integral type, which is either
- /// BoolTy or one of the Integer types.
+ /// isInteger - True if this is an instance of IntegerType.
///
- bool isIntegral() const { return isInteger() || this == BoolTy; }
+ bool isInteger() const { return ID == IntegerTyID; }
/// isFloatingPoint - Return true if this is one of the two floating point
/// types
bool isFloatingPoint() const { return ID == FloatTyID || ID == DoubleTyID; }
+ /// isFPOrFPVector - Return true if this is a FP type or a vector of FP types.
+ ///
+ bool isFPOrFPVector() const;
+
/// isAbstract - True if the type is either an Opaque type, or is a derived
/// type that includes an opaque type somewhere in it.
///
inline bool isAbstract() const { return Abstract; }
- /// isLosslesslyConvertibleTo - Return true if this type can be converted to
- /// 'Ty' without any reinterpretation of bits. For example, uint to int.
- ///
- bool isLosslesslyConvertibleTo(const Type *Ty) const;
+ /// canLosslesslyBitCastTo - Return true if this type could be converted
+ /// with a lossless BitCast to type 'Ty'. For example, uint to int. BitCasts
+ /// are valid for types of the same size only where no re-interpretation of
+ /// the bits is done.
+ /// @brief Determine if this type could be losslessly bitcast to Ty
+ bool canLosslesslyBitCastTo(const Type *Ty) const;
/// Here are some useful little methods to query what type derived types are
///
inline bool isFirstClassType() const {
return (ID != VoidTyID && ID <= LastPrimitiveTyID) ||
- ID == PointerTyID || ID == PackedTyID;
+ ID == IntegerTyID || ID == PointerTyID || ID == PackedTyID;
}
/// isSized - Return true if it makes sense to take the size of this type. To
///
bool isSized() const {
// If it's a primitive, it is always sized.
- if (ID >= BoolTyID && ID <= DoubleTyID || ID == PointerTyID)
+ if (ID == IntegerTyID || isFloatingPoint() || ID == PointerTyID)
return true;
// If it is not something that can have a size (e.g. a function or label),
// it doesn't have a size.
- if (ID != StructTyID && ID != ArrayTyID && ID != PackedTyID)
+ if (ID != StructTyID && ID != ArrayTyID && ID != PackedTyID &&
+ ID != PackedStructTyID)
return false;
// If it is something that can have a size and it's concrete, it definitely
// has a size, otherwise we have to try harder to decide.
/// type. These are fixed by LLVM and are not target dependent. This will
/// return zero if the type does not have a size or is not a primitive type.
///
- unsigned getPrimitiveSize() const;
unsigned getPrimitiveSizeInBits() const;
- /// getUnsignedVersion - If this is an integer type, return the unsigned
- /// variant of this type. For example int -> uint.
- const Type *getUnsignedVersion() const;
-
- /// getSignedVersion - If this is an integer type, return the signed variant
- /// of this type. For example uint -> int.
- const Type *getSignedVersion() const;
-
- /// getIntegralTypeMask - 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 getIntegralTypeMask() const {
- assert(isIntegral() && "This only works for integral types!");
- return ~uint64_t(0UL) >> (64-getPrimitiveSizeInBits());
- }
-
/// getForwaredType - Return the type that this type has been resolved to if
/// it has been resolved to anything. This is used to implement the
/// union-find algorithm for type resolution, and shouldn't be used by general
/// getVAArgsPromotedType - Return the type an argument of this type
/// will be promoted to if passed through a variable argument
/// function.
- const Type *getVAArgsPromotedType() const {
- if (ID == BoolTyID || ID == UByteTyID || ID == UShortTyID)
- return Type::UIntTy;
- else if (ID == SByteTyID || ID == ShortTyID)
- return Type::IntTy;
- else if (ID == FloatTyID)
- return Type::DoubleTy;
- else
- return this;
- }
+ const Type *getVAArgsPromotedType() const;
//===--------------------------------------------------------------------===//
// Type Iteration support
//===--------------------------------------------------------------------===//
// These are the builtin types that are always available...
//
- static Type *VoidTy , *BoolTy;
- static Type *SByteTy, *UByteTy,
- *ShortTy, *UShortTy,
- *IntTy , *UIntTy,
- *LongTy , *ULongTy;
- static Type *FloatTy, *DoubleTy;
-
- static Type* LabelTy;
+ static const Type *VoidTy, *LabelTy, *FloatTy, *DoubleTy;
+ static const IntegerType *Int1Ty, *Int8Ty, *Int16Ty, *Int32Ty, *Int64Ty;
/// Methods for support type inquiry through isa, cast, and dyn_cast:
static inline bool classof(const Type *T) { return true; }
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