[i1] Implement packed_storage layout encoding attribute
#4769
| Job | Run time |
|---|---|
| 6s | |
| 7m 1s | |
| 7m 7s |
packed_storage layout encoding attribute
#4769
| Job | Run time |
|---|---|
| 6s | |
| 7m 1s | |
| 7m 7s |