After further review the slight increase in memory usage is minimal and worth the improvement in runtime for each phase.
The new indices follow the same format as before, we assign each entity an index when it is registered into the entity map. However these new indices are only used by the entity maps and not as part of the serialization format for those entities. The index only exists to make look ups faster in the "map". As such, I've made the field private to prevent/discourage outside use of it.
Change-Id: I7a7c20a2dd51b01d2390bb4401545821a1014832
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/331360
Reviewed-by: Sigmund Cherem <sigmund@google.com>
Commit-Queue: Nate Biggs <natebiggs@google.com>
Nate Biggs
9542aa442a