Honored Contributor
Honored ContributorThere once were path-based groups for LogicLock, but they were removed because they were never used. (They were most useful in the days of Apex, when there was a clear "bin" size that you wanted your logic to fit into).
Assuming there's a timing constraint, then the fitter is trying to put it closer but can't. My guess is that there is something else pulling it in another direction. It might be a fanout to another I/O that is on the other side of the die, or maybe something pulling the source register far away. I would spend some time in TimeQuest trying to analyze why this is occuring. Usually forcing the fitter on what seems like a trivial path like this will fix this problem but break the other paths it is trying to balance. (Of course, there are times where this just works...)
