add pin counting filter option to pack_mol_in_existing_cluster

vpr/src/pack/re_cluster_util.cpp

@@ -212,7 +212,8 @@ bool pack_mol_in_existing_cluster(t_pack_molecule* molecule,
                                   std::unordered_set<AtomBlockId>* new_clb_atoms,
                                   bool during_packing,
                                   t_clustering_data& clustering_data,
-                                  t_lb_router_data*& router_data) {
+                                  t_lb_router_data*& router_data,
+                                  bool enable_pin_feasibility_filter) {
     auto& helper_ctx = g_vpr_ctx.mutable_cl_helper();
     auto& cluster_ctx = g_vpr_ctx.mutable_clustering();
 
@@ -241,7 +242,7 @@ bool pack_mol_in_existing_cluster(t_pack_molecule* molecule,
                                     E_DETAILED_ROUTE_FOR_EACH_ATOM,
                                     router_data,
                                     0,
-                                    helper_ctx.enable_pin_feasibility_filter,
+                                    enable_pin_feasibility_filter,
                                     //false,
                                     helper_ctx.feasible_block_array_size,
                                     target_ext_pin_util,

vpr/src/pack/re_cluster_util.h

@@ -100,14 +100,16 @@ bool start_new_cluster_for_mol(t_pack_molecule* molecule,
  * @param clustering_data: A data structure containing helper data for the clustering process
  *                          (is updated if this function is called during packing, especially intra_lb_routing data member).
  * @param router_data: returns the intra logic block router data.
+ * @param enable_pin_feasibility_filter: do a pin couting based legality check (before or in place of intra-cluster routing check).
  */
 bool pack_mol_in_existing_cluster(t_pack_molecule* molecule,
                                   int molecule_size,
                                   const ClusterBlockId& new_clb,
                                   std::unordered_set<AtomBlockId>* new_clb_atoms,
                                   bool during_packing,
                                   t_clustering_data& clustering_data,
-                                  t_lb_router_data*& router_data);
+                                  t_lb_router_data*& router_data,
+                                  bool enable_pin_feasibility_filter = true);
 
 /**
  * @brief A function that fix the clustered netlist if the move is performed