added route verbosity feature

Author: ZohairZaidi

doc/src/vpr/command_line_usage.rst

@@ -1292,6 +1292,13 @@ VPR uses a negotiated congestion algorithm (based on Pathfinder) to perform rout
     * `swns` - setup Worst Negative Slack (sWNS) [ns]
     * `stns` - Setup Total Negative Slack (sTNS) [ns]
 
+.. option:: --route_verbosity <int>
+
+    Controls the verbosity of routing output.
+    High values produce more detailed output, which can be useful for debugging or understanding the routing process.
+
+    **Default**: ``1``
+
 .. _timing_driven_router_options:
 
 Timing-Driven Router Options

vpr/src/base/SetupVPR.cpp

@@ -435,6 +435,7 @@ static void SetupRouterOpts(const t_options& Options, t_router_opts* RouterOpts)
     RouterOpts->pres_fac_mult = Options.pres_fac_mult;
     RouterOpts->max_pres_fac = Options.max_pres_fac;
     RouterOpts->route_type = Options.RouteType;
+    RouterOpts->route_verbosity = Options.route_verbosity;
 
     RouterOpts->full_stats = Options.full_stats;
 

vpr/src/base/read_options.h

@@ -218,6 +218,7 @@ struct t_options {
     argparse::ArgValue<int> reorder_rr_graph_nodes_seed;
     argparse::ArgValue<bool> flat_routing;
     argparse::ArgValue<bool> has_choking_spot;
+    argparse::ArgValue<int> route_verbosity;
 
     /* Timing-driven router options only */
     argparse::ArgValue<float> astar_fac;

vpr/src/base/vpr_types.h

@@ -1387,6 +1387,7 @@ struct t_router_opts {
     int router_debug_iteration;
     e_router_lookahead lookahead_type;
     int max_convergence_count;
+    int route_verbosity;
     float reconvergence_cpd_threshold;
     e_router_initial_timing initial_timing;
     bool update_lower_bound_delays;

vpr/src/route/rr_graph.cpp

@@ -2207,7 +2207,7 @@ static std::function<void(t_chan_width*)> alloc_and_load_rr_graph(RRGraphBuilder
             }
         }
     }
-    VTR_LOG("CHAN->CHAN type edge count:%d\n", num_edges);
+    VTR_LOGV(verbosity > 1,"CHAN->CHAN type edge count:%d\n", num_edges);
     num_edges = 0;
     std::function<void(t_chan_width*)> update_chan_width = [](t_chan_width*) noexcept {};
     if (clock_modeling == DEDICATED_NETWORK) {