NoReturn = 1 << 2, ///< mark the function as not returning
InReg = 1 << 3, ///< force argument to be passed in register
StructRet = 1 << 4, ///< hidden pointer to structure to return
- NoUnwind = 1 << 5 ///< Function doesn't unwind stack
+ NoUnwind = 1 << 5, ///< Function doesn't unwind stack
+ NoAlias = 1 << 6 ///< Considered to not alias after call.
};
}