[lib][arch] add template id to t_arch_switch

Author: amin1377

libs/libarchfpga/src/physical_types.h

@@ -1799,6 +1799,12 @@ struct t_arch_switch_inf {
     e_power_buffer_type power_buffer_type = POWER_BUFFER_TYPE_AUTO;
     float power_buffer_size = 0.;
 
+    // The template ID of the switch. This is metadata stored for each switch to
+    // simplify certain analyses. For example, when generating the CRR graph, the
+    // template ID is used to determine which switch in the template is used most
+    // or least frequently.
+    std::string template_id = "";
+
     bool intra_tile = false;
 
   public:

vpr/src/route/rr_graph_generation/tileable_rr_graph/crr_generator/crr_edge_builder.cpp

@@ -12,7 +12,7 @@ static std::string get_crr_switch_name(const int delay_ps) {
     }
 }
 
-static t_arch_switch_inf create_crr_switch(const int delay_ps) {
+static t_arch_switch_inf create_crr_switch(const int delay_ps, const std::string& sw_template_id) {
     std::string switch_name = get_crr_switch_name(delay_ps);
 
     t_arch_switch_inf arch_switch_inf;
@@ -27,23 +27,23 @@ static t_arch_switch_inf create_crr_switch(const int delay_ps) {
     arch_switch_inf.buf_size_type = e_buffer_size::ABSOLUTE;
     arch_switch_inf.buf_size = 0.;
     arch_switch_inf.intra_tile = false;
+    arch_switch_inf.template_id = sw_template_id;
 
     return arch_switch_inf;
 }
 
-static RRSwitchId find_or_create_crr_switch_id(const int delay_ps) {
+static RRSwitchId find_or_create_crr_switch_id(const int delay_ps, const std::string& sw_template_id) {
     std::vector<t_arch_switch_inf>& all_sw_inf = g_vpr_ctx.mutable_device().all_sw_inf;
-    std::string switch_name = get_crr_switch_name(delay_ps);
     int found_sw_id = -1;
     for (int sw_id = 0; sw_id < (int)all_sw_inf.size(); sw_id++) {
-        if (all_sw_inf[sw_id].name == switch_name) {
+        if (all_sw_inf[sw_id].template_id == sw_template_id) {
             found_sw_id = sw_id;
             break;
         }
     }
 
     if (found_sw_id == -1) {
-        t_arch_switch_inf new_arch_switch_inf = create_crr_switch(delay_ps);
+        t_arch_switch_inf new_arch_switch_inf = create_crr_switch(delay_ps, sw_template_id);
         found_sw_id = (int)all_sw_inf.size();
         all_sw_inf.insert(std::make_pair(found_sw_id, new_arch_switch_inf));
         VTR_LOG("Created new CRR switch: %s with ID: %d\n", switch_name.c_str(), found_sw_id);
@@ -66,7 +66,7 @@ void build_crr_gsb_edges(RRGraphBuilder& rr_graph_builder,
         if (delay_ps == -1) {
             rr_switch_id = rr_node_driver_switches[connection.sink_node()];
         } else {
-            rr_switch_id = find_or_create_crr_switch_id(delay_ps);
+            rr_switch_id = find_or_create_crr_switch_id(delay_ps, connection.sw_template_id());
         }
         VTR_ASSERT(rr_switch_id != RRSwitchId::INVALID());
         rr_graph_builder.create_edge_in_cache(connection.src_node(),