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Bugfix/issue 2299#2304

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klayoutmatthias wants to merge 2 commits intomasterfrom
bugfix/issue-2299
Open

Bugfix/issue 2299#2304
klayoutmatthias wants to merge 2 commits intomasterfrom
bugfix/issue-2299

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Matthias Koefferlein added 2 commits March 14, 2026 18:55
Problem was that while properly implementing the reverse
cluster connection during cluster merges, cluster connection
propagation suffered a complexity explosion during generation
of the cluster interactions.

Solution is to postpone the cluster joining step until
a cell is finished connecting the clusters. To mitigate the
performance effect of that, some optimizations are
introduced (e.g. using a more efficient unordered_map).
@klayoutmatthias klayoutmatthias linked an issue Mar 15, 2026 that may be closed by this pull request
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gf180mcu DRC performance regression

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