From 08acc67c058191b33b7a0a679523fe59bd7d8dc3 Mon Sep 17 00:00:00 2001
From: James Cherry <cherry@parallaxsw.com>
Date: Wed, 28 Jan 2026 11:56:40 -0700
Subject: [PATCH 1/2] Sta::networkChanged() comment

Signed-off-by: James Cherry <cherry@parallaxsw.com>
---
 include/sta/Sta.hh | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/include/sta/Sta.hh b/include/sta/Sta.hh
index cdf67203..4404eedf 100644
--- a/include/sta/Sta.hh
+++ b/include/sta/Sta.hh
@@ -1153,7 +1153,9 @@ public:
   virtual void disconnectPin(Pin *pin);
   virtual void makePortPin(const char *port_name,
                            PortDirection *dir);
-  // Notify STA of network change.
+  // Notify STA that the network has changed without using the network
+  // editing API. For example, reading a netlist without using the
+  // builtin network readers.
   void networkChanged();
   void deleteLeafInstanceBefore(const Instance *inst);
   void deleteInstancePinsBefore(const Instance *inst);

From 25ea7a3795f44fac4202edb501e27e8c590b5ee9 Mon Sep 17 00:00:00 2001
From: James Cherry <cherry@parallaxsw.com>
Date: Wed, 28 Jan 2026 12:06:40 -0700
Subject: [PATCH 2/2] network edits invalidate power resolves #371

Signed-off-by: James Cherry <cherry@parallaxsw.com>
---
 power/Power.cc | 10 +---------
 power/Power.hh |  3 +--
 search/Sta.cc  | 13 +++++++++----
 3 files changed, 11 insertions(+), 15 deletions(-)

diff --git a/power/Power.cc b/power/Power.cc
index 3265fe96..c5297b33 100644
--- a/power/Power.cc
+++ b/power/Power.cc
@@ -1595,15 +1595,7 @@ Power::clockMinPeriod()
 }
 
 void
-Power::deleteInstanceBefore(const Instance *)
-{
-  activities_valid_ = false;
-  instance_powers_.clear();
-  corner_ = nullptr;
-}
-
-void
-Power::deletePinBefore(const Pin *)
+Power::powerInvalid()
 {
   activities_valid_ = false;
   instance_powers_.clear();
diff --git a/power/Power.hh b/power/Power.hh
index abed2f40..82ad01f2 100644
--- a/power/Power.hh
+++ b/power/Power.hh
@@ -108,8 +108,7 @@ public:
   float clockMinPeriod();
   InstanceSeq highestPowerInstances(size_t count,
                                     const Corner *corner);
-  void deleteInstanceBefore(const Instance *inst);
-  void deletePinBefore(const Pin *pin);
+  void powerInvalid();
 
 protected:
   PwrActivity &activity(const Pin *pin);
diff --git a/search/Sta.cc b/search/Sta.cc
index eb389646..7b9a3123 100644
--- a/search/Sta.cc
+++ b/search/Sta.cc
@@ -4245,6 +4245,7 @@ Sta::makeInstanceAfter(const Instance *inst)
         }
       }
       graph_->makeInstanceEdges(inst);
+      power_->powerInvalid();
     }
   }
 }
@@ -4311,6 +4312,8 @@ Sta::replaceEquivCellAfter(const Instance *inst)
 	parasitics_->loadPinCapacitanceChanged(pin);
     }
     delete pin_iter;
+    clk_skews_->clear();
+    power_->powerInvalid();
   }
 }
 
@@ -4381,7 +4384,6 @@ Sta::replaceCellBefore(const Instance *inst,
       }
     }
     delete pin_iter;
-    clk_skews_->clear();
   }
 }
 
@@ -4447,6 +4449,7 @@ Sta::connectPinAfter(const Pin *pin)
   sdc_->connectPinAfter(pin);
   sim_->connectPinAfter(pin);
   clk_skews_->clear();
+  power_->powerInvalid();
 }
 
 void
@@ -4538,6 +4541,7 @@ Sta::disconnectPinBefore(const Pin *pin)
       }
     }
     clk_skews_->clear();
+    power_->powerInvalid();
   }
 }
 
@@ -4582,6 +4586,8 @@ Sta::deleteNetBefore(const Net *net)
     delete pin_iter;
   }
   sdc_->deleteNetBefore(net);
+  clk_skews_->clear();
+  power_->powerInvalid();
 }
 
 void
@@ -4609,7 +4615,8 @@ Sta::deleteLeafInstanceBefore(const Instance *inst)
 {
   sim_->deleteInstanceBefore(inst);
   sdc_->deleteInstanceBefore(inst);
-  power_->deleteInstanceBefore(inst);
+  clk_skews_->clear();
+  power_->powerInvalid();
 }
 
 void
@@ -4687,8 +4694,6 @@ Sta::deletePinBefore(const Pin *pin)
   sdc_->deletePinBefore(pin);
   sim_->deletePinBefore(pin);
   clk_network_->deletePinBefore(pin);
-  power_->deletePinBefore(pin);
-  clk_skews_->clear();
 }
 
 void