diff options
| -rw-r--r-- | include/llvm/Type.h | 11 | ||||
| -rw-r--r-- | lib/VMCore/Type.cpp | 35 |
2 files changed, 45 insertions, 1 deletions
diff --git a/include/llvm/Type.h b/include/llvm/Type.h index 960af949b1..e1fef6c882 100644 --- a/include/llvm/Type.h +++ b/include/llvm/Type.h @@ -212,9 +212,18 @@ public: /// unsigned getPrimitiveSize() 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; + /// 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. + /// union-find algorithm for type resolution, and shouldn't be used by general + /// purpose clients. const Type *getForwardedType() const { if (!ForwardType) return 0; return getForwardedTypeInternal(); diff --git a/lib/VMCore/Type.cpp b/lib/VMCore/Type.cpp index 1d265e1dd2..5b19cb01d0 100644 --- a/lib/VMCore/Type.cpp +++ b/lib/VMCore/Type.cpp @@ -113,6 +113,41 @@ bool Type::isLosslesslyConvertibleTo(const Type *Ty) const { } } +/// getUnsignedVersion - If this is an integer type, return the unsigned +/// variant of this type. For example int -> uint. +const Type *Type::getUnsignedVersion() const { + switch (getPrimitiveID()) { + default: + assert(isInteger()&&"Type::getUnsignedVersion is only valid for integers!"); + case Type::UByteTyID: + case Type::SByteTyID: return Type::UByteTy; + case Type::UShortTyID: + case Type::ShortTyID: return Type::UShortTy; + case Type::UIntTyID: + case Type::IntTyID: return Type::UIntTy; + case Type::ULongTyID: + case Type::LongTyID: return Type::ULongTy; + } +} + +/// getSignedVersion - If this is an integer type, return the signed variant +/// of this type. For example uint -> int. +const Type *Type::getSignedVersion() const { + switch (getPrimitiveID()) { + default: + assert(isInteger() && "Type::getSignedVersion is only valid for integers!"); + case Type::UByteTyID: + case Type::SByteTyID: return Type::SByteTy; + case Type::UShortTyID: + case Type::ShortTyID: return Type::ShortTy; + case Type::UIntTyID: + case Type::IntTyID: return Type::IntTy; + case Type::ULongTyID: + case Type::LongTyID: return Type::LongTy; + } +} + + // getPrimitiveSize - Return the basic size of this type if it is a primitive // 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. |