Add Type::spliceArray(), improve splice_array() array type narrowing
#20715
| Job | Run time |
|---|---|
| 1m 27s | |
| 1m 50s | |
| 3m 0s | |
| 1m 28s | |
| 1m 32s | |
| 1m 37s | |
| 1m 26s | |
| 2m 50s | |
| 1m 27s | |
| 1m 32s | |
| 2m 32s | |
| 1m 31s | |
| 2m 31s | |
| 1m 29s | |
| 2m 32s | |
| 1m 33s | |
| 2m 33s | |
| 1m 27s | |
| 34m 17s |