{"ast_node_type":"variable","tokens":[{"end":73,"kind":"keyword","start":0,"text":"let"}]}
        let alloc_align = AttributeKind::AllocAlign.create_attr(cx.llcx);
        // apply to argument place instead of function
        attributes::apply_to_llfn(llfn, AttributePlace::Argument(1), &[alloc_align]);