优化结构体的生成逻辑，去除无用的联合体类型字段，使类型话数组的绑定更明确 #189
| Job | Run time |
|---|---|
| 8m 44s | |
| 8m 51s | |
| 38m 29s | |
| 40m 45s | |
| 10m 28s | |
| 9m 30s | |
| 10m 33s | |
| 10m 59s | |
| 6m 38s | |
| 6m 39s | |
| 6m 52s | |
| 6m 40s | |
| 6m 47s | |
| 6m 36s | |
| 6m 45s | |
| 6m 37s | |
| 3h 11m 53s |
| Job | Run time |
|---|---|
| 8m 44s | |
| 8m 51s | |
| 38m 29s | |
| 40m 45s | |
| 10m 28s | |
| 9m 30s | |
| 10m 33s | |
| 10m 59s | |
| 6m 38s | |
| 6m 39s | |
| 6m 52s | |
| 6m 40s | |
| 6m 47s | |
| 6m 36s | |
| 6m 45s | |
| 6m 37s | |
| 3h 11m 53s |