func: uint64_t helper_addlv (uint64_t op1, uint64_t op2)
  
  {
  
      uint64_t tmp = op1;
  
      op1 = (uint32_t)(op1 + op2);
  
      if (unlikely((tmp ^ op2 ^ (-1UL)) & (tmp ^ op1) & (1UL << 31))) {
  
          arith_excp(env, GETPC(), EXC_M_IOV, 0);
  
      }
  
      return op1;
  
  }
  