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Merge pull request #421 from KLayout/issue-417 

Fixed #417: look up the net in the parent hierarchy of the net shape …
This commit is contained in:
Matthias Köfferlein 2019-11-22 23:11:59 +01:00 committed by GitHub
parent c8cf8122b6 f28b8e60c1
commit 9200e5037d
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GPG Key ID: 4AEE18F83AFDEB23
1 changed files with 29 additions and 9 deletions
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38
src/db/db/dbLayoutToNetlist.cc
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@ -1033,16 +1033,36 @@ db::Net *LayoutToNetlist::probe_net (const db::Region &of_region, const db::Poin
cell_indexes.push_back (i->inst_ptr.cell_index ());
}
db::Circuit *circuit = mp_netlist->circuit_by_cell_index (cell_indexes.back ());
if (! circuit) {
// the circuit has probably been optimized away
return 0;
}
db::Circuit *circuit = 0;
db::Net *net = 0;
while (true) {
circuit = mp_netlist->circuit_by_cell_index (cell_indexes.back ());
if (circuit) {
net = circuit->net_by_cluster_id (cluster_id);
if (net) {
break;
}
}
// The net might have been propagated to the parent. So move there.
if (inst_path.empty ()) {
return 0;
}
db::ClusterInstance ci (cluster_id, inst_path.back ());
cell_indexes.pop_back ();
inst_path.pop_back ();
cluster_id = m_net_clusters.clusters_per_cell (cell_indexes.back ()).find_cluster_with_connection (ci);
// no parent cluster found
if (cluster_id == 0) {
return 0;
}
db::Net *net = circuit->net_by_cluster_id (cluster_id);
if (! net) {
// the net has probably been optimized away
return 0;
}
// follow the path up in the net hierarchy using the transformation and the upper cell index as the