Fix type instability for vec[1, end] indexing
#1105
| Job | Run time |
|---|---|
| 21m 43s | |
| 13m 42s | |
| 10m 19s | |
| 2m 31s | |
| 11m 5s | |
| 37m 30s | |
| 27m 38s | |
| 1h 22m 16s | |
| 24m 5s | |
| 6m 45s | |
| 29m 16s | |
| 7m 22s | |
| 3m 9s | |
| 33m 48s | |
| 2h 32m 15s | |
| 7h 43m 24s |