[IR] Create predecessors() and successors() on ir.Node
#8503
| Job | Run time |
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| 5s | |
| 2m 49s | |
| 4m 59s | |
| 21m 23s | |
| 17m 57s | |
| 19m 43s | |
| 17m 54s | |
| 17m 19s | |
| 3m 42s | |
| 4m 0s | |
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| 3m 45s | |
| 4m 1s | |
| 11m 54s | |
| 5m 37s | |
| 7m 13s | |
| 9m 10s | |
| 8m 41s | |
| 10m 41s | |
| 8m 48s | |
| 17m 25s | |
| 3h 20m 50s |