(ptrdiff_t)(CG_OFFSET(cg) - off)) < 0 || js_Emit3(cx, cg, op, ARGC_HI(argc), ARGC_LO(argc)) < 0) { return JS_FALSE; }
(ptrdiff_t)(CG_OFFSET(cg) - top))) { return JS_FALSE; }
                           (ptrdiff_t)(CG_OFFSET(cg) - off)) < 0 ||            js_Emit3(cx, cg, op, ARGC_HI(argc), ARGC_LO(argc)) < 0) {            return JS_FALSE;        }