#include "llvm/AbstractTypeUser.h"
#include "llvm/Support/Casting.h"
#include "llvm/Support/DataTypes.h"
-#include "llvm/Support/Streams.h"
+#include "llvm/System/Atomic.h"
#include "llvm/ADT/GraphTraits.h"
-#include "llvm/ADT/iterator"
+#include "llvm/ADT/iterator.h"
#include <string>
#include <vector>
class PointerType;
class IntegerType;
class TypeMapBase;
+class raw_ostream;
+class Module;
/// This file contains the declaration of the Type class. For more "Type" type
/// stuff, look in DerivedTypes.h.
FP128TyID, ///< 4: 128 bit floating point type (112-bit mantissa)
PPC_FP128TyID, ///< 5: 128 bit floating point type (two 64-bits)
LabelTyID, ///< 6: Labels
+ MetadataTyID, ///< 7: Metadata
// Derived types... see DerivedTypes.h file...
// Make sure FirstDerivedTyID stays up to date!!!
- IntegerTyID, ///< 7: Arbitrary bit width integers
- FunctionTyID, ///< 8: Functions
- StructTyID, ///< 9: Structures
- ArrayTyID, ///< 10: Arrays
- PointerTyID, ///< 11: Pointers
- OpaqueTyID, ///< 12: Opaque: type with unknown structure
- VectorTyID, ///< 13: SIMD 'packed' format, or other vector type
+ IntegerTyID, ///< 8: Arbitrary bit width integers
+ FunctionTyID, ///< 9: Functions
+ StructTyID, ///< 10: Structures
+ ArrayTyID, ///< 11: Arrays
+ PointerTyID, ///< 12: Pointers
+ OpaqueTyID, ///< 13: Opaque: type with unknown structure
+ VectorTyID, ///< 14: SIMD 'packed' format, or other vector type
NumTypeIDs, // Must remain as last defined ID
LastPrimitiveTyID = LabelTyID,
/// has no AbstractTypeUsers, the type is deleted. This is only sensical for
/// derived types.
///
- mutable unsigned RefCount;
+ mutable sys::cas_flag RefCount;
const Type *getForwardedTypeInternal() const;
PATypeHandle *ContainedTys;
public:
+ void print(raw_ostream &O) const;
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;
+ /// @brief Debugging support: print to stderr (use type names from context
+ /// module).
+ void dump(const Module *Context) const;
+
//===--------------------------------------------------------------------===//
// Property accessors for dealing with types... Some of these virtual methods
// are defined in private classes defined in Type.cpp for primitive types.
///
inline TypeID getTypeID() const { return ID; }
- /// getDescription - Return the string representation of the type...
- const std::string &getDescription() const;
+ /// getDescription - Return the string representation of the type.
+ std::string getDescription() const;
/// isInteger - True if this is an instance of IntegerType.
///
///
bool isIntOrIntVector() const;
- /// isFloatingPoint - Return true if this is one of the two floating point
+ /// isFloatingPoint - Return true if this is one of the five floating point
/// types
bool isFloatingPoint() const { return ID == FloatTyID || ID == DoubleTyID ||
ID == X86_FP80TyID || ID == FP128TyID || ID == PPC_FP128TyID; }
inline bool isAbstract() const { return Abstract; }
/// canLosslesslyBitCastTo - Return true if this type could be converted
- /// with a lossless BitCast to type 'Ty'. For example, uint to int. BitCasts
+ /// with a lossless BitCast to type 'Ty'. For example, i8* to i32*. 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
/// is a valid type for a Value.
///
inline bool isFirstClassType() const {
- // Coming soon: first-class struct and array types...
- return isSingleValueType();
+ // There are more first-class kinds than non-first-class kinds, so a
+ // negative test is simpler than a positive one.
+ return ID != FunctionTyID && ID != VoidTyID && ID != OpaqueTyID;
}
/// isSingleValueType - Return true if the type is a valid type for a
ID == IntegerTyID || ID == PointerTyID || ID == VectorTyID;
}
+ /// isAggregateType - Return true if the type is an aggregate type. This
+ /// means it is valid as the first operand of an insertvalue or
+ /// extractvalue instruction. This includes struct and array types, but
+ /// does not include vector types.
+ ///
+ inline bool isAggregateType() const {
+ return ID == StructTyID || ID == ArrayTyID;
+ }
+
/// isSized - Return true if it makes sense to take the size of this type. To
/// get the actual size for a particular target, it is reasonable to use the
/// TargetData subsystem to do this.
/// primitive type.
///
unsigned getPrimitiveSizeInBits() const;
-
+
+ /// getScalarSizeInBits - If this is a vector type, return the
+ /// getPrimitiveSizeInBits value for the element type. Otherwise return the
+ /// getPrimitiveSizeInBits value for this type.
+ unsigned getScalarSizeInBits() const;
+
/// getFPMantissaWidth - Return the width of the mantissa of this type. This
- /// is only valid on scalar floating point types. If the FP type does not
+ /// is only valid on floating point types. If the FP type does not
/// have a stable mantissa (e.g. ppc long double), this method returns -1.
- int getFPMantissaWidth() const {
- assert(isFloatingPoint() && "Not a floating point type!");
- if (ID == FloatTyID) return 24;
- if (ID == DoubleTyID) return 53;
- if (ID == X86_FP80TyID) return 64;
- if (ID == FP128TyID) return 113;
- assert(ID == PPC_FP128TyID && "unknown fp type");
- return -1;
- }
+ int getFPMantissaWidth() const;
/// getForwardedType - Return the type that this type has been resolved to if
/// it has been resolved to anything. This is used to implement the
/// function.
const Type *getVAArgsPromotedType() const;
+ /// getScalarType - If this is a vector type, return the element type,
+ /// otherwise return this.
+ const Type *getScalarType() const;
+
//===--------------------------------------------------------------------===//
// Type Iteration support
//
//===--------------------------------------------------------------------===//
// These are the builtin types that are always available...
//
- static const Type *VoidTy, *LabelTy, *FloatTy, *DoubleTy;
+ static const Type *VoidTy, *LabelTy, *FloatTy, *DoubleTy, *MetadataTy;
static const Type *X86_FP80Ty, *FP128Ty, *PPC_FP128Ty;
static const IntegerType *Int1Ty, *Int8Ty, *Int16Ty, *Int32Ty, *Int64Ty;
void addRef() const {
assert(isAbstract() && "Cannot add a reference to a non-abstract type!");
- ++RefCount;
+ sys::AtomicIncrement(&RefCount);
}
void dropRef() const {
// If this is the last PATypeHolder using this object, and there are no
// PATypeHandles using it, the type is dead, delete it now.
- if (--RefCount == 0 && AbstractTypeUsers.empty())
+ sys::cas_flag OldCount = sys::AtomicDecrement(&RefCount);
+ if (OldCount == 0 && AbstractTypeUsers.empty())
this->destroy();
}
/// 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);
- }
+ void addAbstractTypeUser(AbstractTypeUser *U) const;
/// 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
///
void removeAbstractTypeUser(AbstractTypeUser *U) const;
+ /// getPointerTo - Return a pointer to the current type. This is equivalent
+ /// to PointerType::get(Foo, AddrSpace).
+ PointerType *getPointerTo(unsigned AddrSpace = 0) const;
+
private:
/// isSizedDerivedType - Derived types like structures and arrays are sized
/// iff all of the members of the type are sized as well. Since asking for
// Define inline methods for PATypeHolder.
+/// get - This implements the forwarding part of the union-find algorithm for
+/// abstract types. Before every access to the Type*, we check to see if the
+/// type we are pointing to is forwarding to a new type. If so, we drop our
+/// reference to the type.
+///
+inline Type* PATypeHolder::get() const {
+ const Type *NewTy = Ty->getForwardedType();
+ if (!NewTy) return const_cast<Type*>(Ty);
+ return *const_cast<PATypeHolder*>(this) = NewTy;
+}
+
inline void PATypeHolder::addRef() {
assert(Ty && "Type Holder has a null type!");
if (Ty->isAbstract())
}
std::ostream &operator<<(std::ostream &OS, const Type &T);
+raw_ostream &operator<<(raw_ostream &OS, const Type &T);
} // End llvm namespace
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