pass t_chan_width by reference

Author: soheilshahrouz

vpr/src/route/rr_graph.cpp

@@ -1250,7 +1250,7 @@ static void build_rr_graph(e_graph_type graph_type,
 
     // Add routing resources to rr_graph lookup table
     alloc_and_load_rr_node_indices(device_ctx.rr_graph_builder,
-                                   &nodes_per_chan,
+                                   nodes_per_chan,
                                    grid,
                                    &num_rr_nodes,
                                    chan_details_x,

vpr/src/route/rr_graph2.cpp

@@ -1441,7 +1441,7 @@ static void add_classes_spatial_lookup(RRGraphBuilder& rr_graph_builder,
 
 /* As the rr_indices builders modify a local copy of indices, use the local copy in the builder */
 void alloc_and_load_rr_node_indices(RRGraphBuilder& rr_graph_builder,
-                                    const t_chan_width* nodes_per_chan,
+                                    const t_chan_width& nodes_per_chan,
                                     const DeviceGrid& grid,
                                     int* index,
                                     const t_chan_details& chan_details_x,
@@ -1464,9 +1464,9 @@ void alloc_and_load_rr_node_indices(RRGraphBuilder& rr_graph_builder,
     load_block_rr_indices(rr_graph_builder, grid, index, is_flat);
 
     /* Load the data for x and y channels */
-    load_chan_rr_indices(nodes_per_chan->x_max, grid, grid.width(), grid.height(),
+    load_chan_rr_indices(nodes_per_chan.x_max, grid, grid.width(), grid.height(),
                          e_rr_type::CHANX, chan_details_x, rr_graph_builder, index);
-    load_chan_rr_indices(nodes_per_chan->y_max, grid, grid.height(), grid.width(),
+    load_chan_rr_indices(nodes_per_chan.y_max, grid, grid.height(), grid.width(),
                          e_rr_type::CHANY, chan_details_y, rr_graph_builder, index);
 }
 

vpr/src/route/rr_graph2.h

@@ -1,5 +1,5 @@
-#ifndef RR_GRAPH2_H
-#define RR_GRAPH2_H
+#pragma once
+
 #include <vector>
 
 #include "build_switchblocks.h"
@@ -15,7 +15,7 @@
 /******************* Subroutines exported by rr_graph2.c *********************/
 
 void alloc_and_load_rr_node_indices(RRGraphBuilder& rr_graph_builder,
-                                    const t_chan_width* nodes_per_chan,
+                                    const t_chan_width& nodes_per_chan,
                                     const DeviceGrid& grid,
                                     int* index,
                                     const t_chan_details& chan_details_x,
@@ -252,4 +252,3 @@ void dump_track_to_pin_map(t_track_to_pin_lookup& track_to_pin_map,
                            FILE* fp);
 
 inline int get_chan_width(enum e_side side, const t_chan_width& nodes_per_channel);
-#endif