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Implement some nice functions useful for looking at types

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@1442 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner
2001-12-13 00:40:16 +00:00
parent a4268ad389
commit 4adc20b41c
1 changed files with 13 additions and 1 deletions
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14
include/llvm/Type.h
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@ -146,6 +146,14 @@ public:
// //
bool isLosslesslyConvertableTo(const Type *Ty) const; bool isLosslesslyConvertableTo(const Type *Ty) const;
// 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.
//
bool isSized() const {
return ID != TypeTyID && ID != MethodTyID && ID != OpaqueTyID;
}
//===--------------------------------------------------------------------===// //===--------------------------------------------------------------------===//
// Type Iteration support // Type Iteration support
// //
@ -190,9 +198,13 @@ public:
// Note that all other types can just compare to see if this == Type::xxxTy; // Note that all other types can just compare to see if this == Type::xxxTy;
// //
inline bool isPrimitiveType() const { return ID < FirstDerivedTyID; } inline bool isPrimitiveType() const { return ID < FirstDerivedTyID; }
inline bool isDerivedType() const { return ID >= FirstDerivedTyID; } inline bool isDerivedType() const { return ID >= FirstDerivedTyID; }
// isFirstClassType - Return true if the value is holdable in a register.
inline bool isFirstClassType() const {
return isPrimitiveType() || ID == PointerTyID;
}
// Methods for support type inquiry through isa, cast, and dyn_cast: // Methods for support type inquiry through isa, cast, and dyn_cast:
static inline bool classof(const Type *T) { return true; } static inline bool classof(const Type *T) { return true; }
static inline bool classof(const Value *V) { static inline bool classof(const Value *V) {