lvl_s4t3_entry() // [R1

{ info_tbls: [(c4uB,

             label: lvl_s4t3_info
             rep: HeapRep 1 ptrs { Thunk }
             srt: Nothing)]
stack_info: arg_space: 8 updfr_space: Just 8

}

    {offset
      c4uB: // global
          if ((Sp + -32) < SpLim) (likely: False) goto c4uC; else goto c4uD;
      c4uC: // global
          R1 = R1;
          call (stg_gc_enter_1)(R1) args: 8, res: 0, upd: 8;
      c4uD: // global
          I64[Sp - 16] = stg_upd_frame_info;
          P64[Sp - 8] = R1;
          R2 = P64[R1 + 16];
          I64[Sp - 32] = stg_ap_p_info;
          P64[Sp - 24] = Main.fib3_closure+1;
          Sp = Sp - 32;
          call GHC.Num.fromInteger_info(R2) args: 40, res: 0, upd: 24;
    }
}