#define LLVM_TYPE_H
#include "llvm/Support/Casting.h"
+#include "llvm/Support/DataTypes.h"
namespace llvm {
class Module;
class LLVMContext;
class LLVMContextImpl;
+class StringRef;
template<class GraphType> struct GraphTraits;
/// The instances of the Type class are immutable: once they are created,
enum TypeID {
// PrimitiveTypes - make sure LastPrimitiveTyID stays up to date.
VoidTyID = 0, ///< 0: type with no size
- HalfTyID, ///< 1: 32-bit floating point type
+ HalfTyID, ///< 1: 16-bit floating point type
FloatTyID, ///< 2: 32-bit floating point type
DoubleTyID, ///< 3: 64-bit floating point type
X86_FP80TyID, ///< 4: 80-bit floating point type (X87)
/// Context - This refers to the LLVMContext in which this type was uniqued.
LLVMContext &Context;
- TypeID ID : 8; // The current base type of this type.
- unsigned SubclassData : 24; // Space for subclasses to store data
+ // Due to Ubuntu GCC bug 910363:
+ // https://bugs.launchpad.net/ubuntu/+source/gcc-4.5/+bug/910363
+ // Bitpack ID and SubclassData manually.
+ // Note: TypeID : low 8 bit; SubclassData : high 24 bit.
+ uint32_t IDAndSubclassData;
protected:
friend class LLVMContextImpl;
explicit Type(LLVMContext &C, TypeID tid)
- : Context(C), ID(tid), SubclassData(0),
- NumContainedTys(0), ContainedTys(0) {}
+ : Context(C), IDAndSubclassData(0),
+ NumContainedTys(0), ContainedTys(0) {
+ setTypeID(tid);
+ }
~Type() {}
-
- unsigned getSubclassData() const { return SubclassData; }
+
+ void setTypeID(TypeID ID) {
+ IDAndSubclassData = (ID & 0xFF) | (IDAndSubclassData & 0xFFFFFF00);
+ assert(getTypeID() == ID && "TypeID data too large for field");
+ }
+
+ unsigned getSubclassData() const { return IDAndSubclassData >> 8; }
+
void setSubclassData(unsigned val) {
- SubclassData = val;
+ IDAndSubclassData = (IDAndSubclassData & 0xFF) | (val << 8);
// Ensure we don't have any accidental truncation.
- assert(SubclassData == val && "Subclass data too large for field");
+ assert(getSubclassData() == val && "Subclass data too large for field");
}
/// NumContainedTys - Keeps track of how many Type*'s there are in the
/// getTypeID - Return the type id for the type. This will return one
/// of the TypeID enum elements defined above.
///
- TypeID getTypeID() const { return ID; }
+ TypeID getTypeID() const { return (TypeID)(IDAndSubclassData & 0xFF); }
/// isVoidTy - Return true if this is 'void'.
- bool isVoidTy() const { return ID == VoidTyID; }
+ bool isVoidTy() const { return getTypeID() == VoidTyID; }
/// isHalfTy - Return true if this is 'half', a 16-bit IEEE fp type.
- bool isHalfTy() const { return ID == HalfTyID; }
+ bool isHalfTy() const { return getTypeID() == HalfTyID; }
/// isFloatTy - Return true if this is 'float', a 32-bit IEEE fp type.
- bool isFloatTy() const { return ID == FloatTyID; }
+ bool isFloatTy() const { return getTypeID() == FloatTyID; }
/// isDoubleTy - Return true if this is 'double', a 64-bit IEEE fp type.
- bool isDoubleTy() const { return ID == DoubleTyID; }
+ bool isDoubleTy() const { return getTypeID() == DoubleTyID; }
/// isX86_FP80Ty - Return true if this is x86 long double.
- bool isX86_FP80Ty() const { return ID == X86_FP80TyID; }
+ bool isX86_FP80Ty() const { return getTypeID() == X86_FP80TyID; }
/// isFP128Ty - Return true if this is 'fp128'.
- bool isFP128Ty() const { return ID == FP128TyID; }
+ bool isFP128Ty() const { return getTypeID() == FP128TyID; }
/// isPPC_FP128Ty - Return true if this is powerpc long double.
- bool isPPC_FP128Ty() const { return ID == PPC_FP128TyID; }
+ bool isPPC_FP128Ty() const { return getTypeID() == PPC_FP128TyID; }
- /// isFloatingPointTy - Return true if this is one of the five floating point
+ /// isFloatingPointTy - Return true if this is one of the six floating point
/// types
bool isFloatingPointTy() const {
- return ID == HalfTyID || ID == FloatTyID || ID == DoubleTyID ||
- ID == X86_FP80TyID || ID == FP128TyID || ID == PPC_FP128TyID;
+ return getTypeID() == HalfTyID || getTypeID() == FloatTyID ||
+ getTypeID() == DoubleTyID ||
+ getTypeID() == X86_FP80TyID || getTypeID() == FP128TyID ||
+ getTypeID() == PPC_FP128TyID;
}
/// isX86_MMXTy - Return true if this is X86 MMX.
- bool isX86_MMXTy() const { return ID == X86_MMXTyID; }
+ bool isX86_MMXTy() const { return getTypeID() == X86_MMXTyID; }
/// isFPOrFPVectorTy - Return true if this is a FP type or a vector of FP.
///
- bool isFPOrFPVectorTy() const;
+ bool isFPOrFPVectorTy() const { return getScalarType()->isFloatingPointTy(); }
/// isLabelTy - Return true if this is 'label'.
- bool isLabelTy() const { return ID == LabelTyID; }
+ bool isLabelTy() const { return getTypeID() == LabelTyID; }
/// isMetadataTy - Return true if this is 'metadata'.
- bool isMetadataTy() const { return ID == MetadataTyID; }
+ bool isMetadataTy() const { return getTypeID() == MetadataTyID; }
/// isIntegerTy - True if this is an instance of IntegerType.
///
- bool isIntegerTy() const { return ID == IntegerTyID; }
+ bool isIntegerTy() const { return getTypeID() == IntegerTyID; }
/// isIntegerTy - Return true if this is an IntegerType of the given width.
bool isIntegerTy(unsigned Bitwidth) const;
/// isIntOrIntVectorTy - Return true if this is an integer type or a vector of
/// integer types.
///
- bool isIntOrIntVectorTy() const;
+ bool isIntOrIntVectorTy() const { return getScalarType()->isIntegerTy(); }
/// isFunctionTy - True if this is an instance of FunctionType.
///
- bool isFunctionTy() const { return ID == FunctionTyID; }
+ bool isFunctionTy() const { return getTypeID() == FunctionTyID; }
/// isStructTy - True if this is an instance of StructType.
///
- bool isStructTy() const { return ID == StructTyID; }
+ bool isStructTy() const { return getTypeID() == StructTyID; }
/// isArrayTy - True if this is an instance of ArrayType.
///
- bool isArrayTy() const { return ID == ArrayTyID; }
+ bool isArrayTy() const { return getTypeID() == ArrayTyID; }
/// isPointerTy - True if this is an instance of PointerType.
///
- bool isPointerTy() const { return ID == PointerTyID; }
+ bool isPointerTy() const { return getTypeID() == PointerTyID; }
+ /// isPtrOrPtrVectorTy - Return true if this is a pointer type or a vector of
+ /// pointer types.
+ ///
+ bool isPtrOrPtrVectorTy() const { return getScalarType()->isPointerTy(); }
+
/// isVectorTy - True if this is an instance of VectorType.
///
- bool isVectorTy() const { return ID == VectorTyID; }
+ bool isVectorTy() const { return getTypeID() == VectorTyID; }
/// canLosslesslyBitCastTo - Return true if this type could be converted
/// with a lossless BitCast to type 'Ty'. For example, i8* to i32*. BitCasts
/// Here are some useful little methods to query what type derived types are
/// Note that all other types can just compare to see if this == Type::xxxTy;
///
- bool isPrimitiveType() const { return ID <= LastPrimitiveTyID; }
- bool isDerivedType() const { return ID >= FirstDerivedTyID; }
+ bool isPrimitiveType() const { return getTypeID() <= LastPrimitiveTyID; }
+ bool isDerivedType() const { return getTypeID() >= FirstDerivedTyID; }
/// isFirstClassType - Return true if the type is "first class", meaning it
/// is a valid type for a Value.
///
bool isFirstClassType() const {
- return ID != FunctionTyID && ID != VoidTyID;
+ return getTypeID() != FunctionTyID && getTypeID() != VoidTyID;
}
/// isSingleValueType - Return true if the type is a valid type for a
/// and array types.
///
bool isSingleValueType() const {
- return (ID != VoidTyID && isPrimitiveType()) ||
- ID == IntegerTyID || ID == PointerTyID || ID == VectorTyID;
+ return (getTypeID() != VoidTyID && isPrimitiveType()) ||
+ getTypeID() == IntegerTyID || getTypeID() == PointerTyID ||
+ getTypeID() == VectorTyID;
}
/// isAggregateType - Return true if the type is an aggregate type. This
/// does not include vector types.
///
bool isAggregateType() const {
- return ID == StructTyID || ID == ArrayTyID;
+ return getTypeID() == StructTyID || getTypeID() == 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.
+ /// DataLayout subsystem to do this.
///
bool isSized() const {
// If it's a primitive, it is always sized.
- if (ID == IntegerTyID || isFloatingPointTy() || ID == PointerTyID ||
- ID == X86_MMXTyID)
+ if (getTypeID() == IntegerTyID || isFloatingPointTy() ||
+ getTypeID() == PointerTyID ||
+ getTypeID() == X86_MMXTyID)
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 != VectorTyID)
+ if (getTypeID() != StructTyID && getTypeID() != ArrayTyID &&
+ getTypeID() != VectorTyID)
return false;
// Otherwise we have to try harder to decide.
return isSizedDerivedType();
///
/// Note that this may not reflect the size of memory allocated for an
/// instance of the type or the number of bytes that are written when an
- /// instance of the type is stored to memory. The TargetData class provides
+ /// instance of the type is stored to memory. The DataLayout class provides
/// additional query functions to provide this information.
///
unsigned getPrimitiveSizeInBits() const;
/// getScalarType - If this is a vector type, return the element type,
/// otherwise return 'this'.
+ const Type *getScalarType() const;
Type *getScalarType();
- /// getNumElements - If this is a vector type, return the number of elements,
- /// otherwise return zero.
- unsigned getNumElements();
-
//===--------------------------------------------------------------------===//
// Type Iteration support.
//
///
unsigned getNumContainedTypes() const { return NumContainedTys; }
+ //===--------------------------------------------------------------------===//
+ // Helper methods corresponding to subclass methods. This forces a cast to
+ // the specified subclass and calls its accessor. "getVectorNumElements" (for
+ // example) is shorthand for cast<VectorType>(Ty)->getNumElements(). This is
+ // only intended to cover the core methods that are frequently used, helper
+ // methods should not be added here.
+
+ unsigned getIntegerBitWidth() const;
+
+ Type *getFunctionParamType(unsigned i) const;
+ unsigned getFunctionNumParams() const;
+ bool isFunctionVarArg() const;
+
+ StringRef getStructName() const;
+ unsigned getStructNumElements() const;
+ Type *getStructElementType(unsigned N) const;
+
+ Type *getSequentialElementType() const;
+
+ uint64_t getArrayNumElements() const;
+ Type *getArrayElementType() const { return getSequentialElementType(); }
+
+ unsigned getVectorNumElements() const;
+ Type *getVectorElementType() const { return getSequentialElementType(); }
+
+ Type *getPointerElementType() const { return getSequentialElementType(); }
+
+ /// \brief Get the address space of this pointer or pointer vector type.
+ unsigned getPointerAddressSpace() const;
+
//===--------------------------------------------------------------------===//
// Static members exported by the Type class itself. Useful for getting
// instances of Type.
static PointerType *getInt32PtrTy(LLVMContext &C, unsigned AS = 0);
static PointerType *getInt64PtrTy(LLVMContext &C, unsigned AS = 0);
- /// Methods for support type inquiry through isa, cast, and dyn_cast:
- static inline bool classof(const Type *) { return true; }
-
/// getPointerTo - Return a pointer to the current type. This is equivalent
/// to PointerType::get(Foo, AddrSpace).
PointerType *getPointerTo(unsigned AddrSpace = 0);
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