func: static TCGv_i64 gen_addq_msw(TCGv_i64 a, TCGv b)
  
  {
  
      TCGv_i64 tmp64 = tcg_temp_new_i64();
  
  
  
      tcg_gen_extu_i32_i64(tmp64, b);
  
      dead_tmp(b);
  
      tcg_gen_shli_i64(tmp64, tmp64, 32);
  
      tcg_gen_add_i64(a, tmp64, a);
  
  
  
      tcg_temp_free_i64(tmp64);
  
      return a;
  
  }
  