added make target check-nonneg / generate (and fixed) all warnings in NONNEG build
#19961
| Job | Run time |
|---|---|
| 5m 18s | |
| 4m 50s | |
| 15m 35s | |
| 12m 19s | |
| 8m 28s | |
| 9m 4s | |
| 55m 34s |