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move the address space into the subclass data field, saving a word on PointerType.

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This limits the # address spaces to 2^23, which should be good enough.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@133192 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner
2011-06-16 21:17:17 +00:00
parent e43d745b5c
commit 6091eb9d7f
2 changed files with 4 additions and 5 deletions
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7
include/llvm/DerivedTypes.h
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@ -440,11 +440,10 @@ public:
}; };
/// PointerType - Class to represent pointers /// PointerType - Class to represent pointers.
/// ///
class PointerType : public SequentialType { class PointerType : public SequentialType {
friend class TypeMap<PointerValType, PointerType>; friend class TypeMap<PointerValType, PointerType>;
unsigned AddressSpace;
PointerType(const PointerType &); // Do not implement PointerType(const PointerType &); // Do not implement
const PointerType &operator=(const PointerType &); // Do not implement const PointerType &operator=(const PointerType &); // Do not implement
@ -465,7 +464,7 @@ public:
static bool isValidElementType(const Type *ElemTy); static bool isValidElementType(const Type *ElemTy);
/// @brief Return the address space of the Pointer type. /// @brief Return the address space of the Pointer type.
inline unsigned getAddressSpace() const { return AddressSpace; } inline unsigned getAddressSpace() const { return getSubclassData(); }
// Implement the AbstractTypeUser interface. // Implement the AbstractTypeUser interface.
virtual void refineAbstractType(const DerivedType *OldTy, const Type *NewTy); virtual void refineAbstractType(const DerivedType *OldTy, const Type *NewTy);
@ -479,7 +478,7 @@ public:
}; };
/// OpaqueType - Class to represent abstract types /// OpaqueType - Class to represent opaque types.
/// ///
class OpaqueType : public DerivedType { class OpaqueType : public DerivedType {
friend class LLVMContextImpl; friend class LLVMContextImpl;

2
lib/VMCore/Type.cpp
View File

@ -533,7 +533,7 @@ VectorType::VectorType(const Type *ElType, unsigned NumEl)
PointerType::PointerType(const Type *E, unsigned AddrSpace) PointerType::PointerType(const Type *E, unsigned AddrSpace)
: SequentialType(PointerTyID, E) { : SequentialType(PointerTyID, E) {
AddressSpace = AddrSpace; setSubclassData(AddrSpace);
// Calculate whether or not this type is abstract // Calculate whether or not this type is abstract
setAbstract(E->isAbstract()); setAbstract(E->isAbstract());
} }