Merge pull request #7939 from The-OpenROAD-Project-staging/gui-cts-view-flat-net

gui: get the flat net for the clock tree viewer

Author: maliberty

src/dbSta/include/db_sta/dbNetwork.hh

@@ -291,6 +291,7 @@ class dbNetwork : public ConcreteNetwork
   const Net* highestConnectedNet(Net* net) const override;
   bool isSpecial(Net* net);
   dbNet* flatNet(const Net* net) const;
+  Net* getFlatNet(Net* net) const;
 
   ////////////////////////////////////////////////////////////////
   // Edit functions

src/dbSta/src/dbNetwork.cc

@@ -4171,4 +4171,19 @@ void dbNetwork::AxiomCheck()
   }
 }
 
+Net* dbNetwork::getFlatNet(Net* net) const
+{
+  if (!net) {
+    return nullptr;
+  }
+  // Convert net to a flat net, if not already
+  dbNet* db_net;
+  dbModNet* db_mod_net;
+  staToDb(net, db_net, db_mod_net);
+  if (db_mod_net) {
+    db_net = findRelatedDbNet(db_mod_net);
+  }
+  return dbToSta(db_net);
+}
+
 }  // namespace sta

src/gui/src/staGuiInterface.cpp

@@ -723,10 +723,8 @@ void ClockTree::addPath(sta::PathExpanded& path, const sta::StaState* sta)
 sta::Net* ClockTree::getNet(const sta::Pin* pin) const
 {
   sta::Term* term = network_->term(pin);
-  if (term != nullptr) {
-    return network_->net(term);
-  }
-  return network_->net(pin);
+  sta::Net* net = term ? network_->net(term) : network_->net(pin);
+  return network_->getFlatNet(net);
 }
 
 bool ClockTree::isLeaf(const sta::Pin* pin) const