grt: re-enable slack update during rsz

Signed-off-by: Jonas Gava <[email protected]>

Author: jfgava

src/grt/src/fastroute/src/utility.cpp

@@ -563,7 +563,8 @@ int FastRouteCore::getViaResistance(const int from_layer, const int to_layer)
   return std::ceil(total_via_resistance / default_res);
 }
 
-void FastRouteCore::setIncrementalGrt(bool is_incremental) {
+void FastRouteCore::setIncrementalGrt(bool is_incremental)
+{
   is_incremental_grt_ = is_incremental;
 }
 
@@ -585,13 +586,12 @@ void FastRouteCore::updateSlacks(float percentage)
 
   for (const int net_id : net_ids_) {
     FrNet* net = nets_[net_id];
-
     float slack = 0;
 
-    // Do not update slack during rsz repair
-    if (en_estimate_parasitics_) {
-      slack = getNetSlack(net->getDbNet());
-    }
+    // TODO: Do not update slack during rsz repair
+    // if (en_estimate_parasitics_) {
+    slack = getNetSlack(net->getDbNet());
+    // }
     net->setSlack(slack);
 
     // Enable res-aware for clock nets by default
@@ -601,7 +601,7 @@ void FastRouteCore::updateSlacks(float percentage)
     // TODO: need to check this positive slack threshold
     // const float pos_threshold = 100e-12;
 
-    res_aware_list.emplace_back(net_id, slack);
+      res_aware_list.emplace_back(net_id, slack);
   }
 
   // Sort by worst slack and ID
@@ -612,9 +612,11 @@ void FastRouteCore::updateSlacks(float percentage)
 
   std::stable_sort(res_aware_list.begin(), res_aware_list.end(), compareSlack);
 
-  if(is_incremental_grt_) {
+  // During incremental grt, enable res-aware for all nets
+  if (is_incremental_grt_) {
     percentage = 1;
   }
+
   // Decide the percentage of nets that will use resistance aware
   for (int i = 0; i < res_aware_list.size() * percentage; i++) {
     nets_[res_aware_list[i].first]->setIsResAware(true);