#if LLVM_VERSION < 30
#define constType const Type
#define constArrayType const ArrayType
#define constStructType const StructType
#define constPointerType const PointerType
#define constFunctionType const FunctionType
#define ARRAYREF(t, a, b) (a), (b)
#define ARRAYREFPARAM(t, a, b, n) a, b
#define ARRAYREFP(a, b, n) a, b
#define ARRAYREFVECTOR(t, a) (a).begin(), (a).end()
#define HINT(n)
#define OPT(n)
#else
#define constType Type
#define constArrayType ArrayType
#define constStructType StructType
#define constPointerType PointerType
#define constFunctionType FunctionType
#define ARRAYREF(t, a, b) ArrayRef<t>(a, b)
#define ARRAYREFPARAM(t, a, b, n) ArrayRef<t> n
#define ARRAYREFP(a, b, n) n
#define ARRAYREFVECTOR(t, a) ArrayRef<t>(a)
#define HINT(n) n,
#define OPT(n) , n
#endif