def decorate_function(self, fn, args, fe_argtypes, noalias=False):
        """
        Set names and attributes of function arguments.
        """
        assert not noalias
        arginfo = self._get_arg_packer(fe_argtypes)
        arginfo.assign_names(self.get_arguments(fn),
                             ['arg.' + a for a in args])

        Set names and attributes of function arguments.
        
numba/cuda/target.py