GRT: avoid rerouting nets that were changed, but still covered by the guides

The-OpenROAD-Project / OpenROAD

OpenROAD's unified application implementing an RTL-to-GDS Flow. Documentation at https://openroad.readthedocs.io/en/latest/

https://theopenroadproject.org/

BSD 3-Clause "New" or "Revised" License

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GRT: avoid rerouting nets that were changed, but still covered by the guides #5254

Open eder-matheus opened 1 week ago

eder-matheus commented 1 week ago

During incremental GRT, nets can change their pins (by swapping the master of instances, moving the instances, connecting a new pin, etc.). If the modified/new pin is already covered by the existing route guides, don't reroute the whole net.