{"ast_node_type":"other","tokens":[{"end":94,"kind":"keyword","start":0,"text":"self.prefix.iter().flat_map(|option_reg|"}]}
            self.prefix.iter().flat_map(|option_reg| option_reg.map(|reg| reg.llvm_type(cx)));
        let prefix_args =
        let rest_args = (0..rest_count).map(|_| rest_ll_unit);