fix some comments

Author: amin1377

vpr/src/route/router_lookahead_map.h

@@ -58,7 +58,7 @@ class Cost_Entry {
 // This is a 6D array storing the cost to travel from a node of type CHANX/CHANY to a point that is dx, dy further, and is on the "layer_num" layer.
 // To store this information, the first index is the layer number that the node under consideration is on, the second index represents the type of channel (X/Y)
 // that the node under consideration belongs to, the third is the segment type (specified in the architecture file under the "segmentlist" tag), the fourth is the
-// "layer_num" mentioned above, the fifth is dx, and the last one is dy.
+// target "layer_num" mentioned above, the fifth is dx, and the last one is dy.
 typedef vtr::NdMatrix<Cost_Entry, 6> t_wire_cost_map; //[0..num_layers][0..1][[0..num_seg_types-1][0..num_layers][0..device_ctx.grid.width()-1][0..device_ctx.grid.height()-1]
                                                       //[0..1] entry distinguish between CHANX/CHANY start nodes respectively
                                                       // The first index is the layer number that the node under consideration is on, and the forth index

vpr/src/route/router_lookahead_map_utils.cpp

@@ -22,9 +22,8 @@ static void dijkstra_flood_to_wires(int itile, RRNodeId inode, util::t_src_opin_
 static void dijkstra_flood_to_ipins(RRNodeId node, util::t_chan_ipins_delays& chan_ipins_delays);
 
 /**
- * @brief Return the maximum ptc number of the SOURCE/OPINs of a tile type
  * @param itile
- * @return
+ * @return Return the maximum ptc number of the SOURCE/OPINs of a tile type
  */
 static int get_tile_src_opin_max_ptc_from_rr_graph(int itile);
 
@@ -314,6 +313,7 @@ template void expand_dijkstra_neighbours(const RRGraphView& rr_graph,
 t_src_opin_delays compute_router_src_opin_lookahead(bool is_flat) {
     vtr::ScopedStartFinishTimer timer("Computing src/opin lookahead");
     auto& device_ctx = g_vpr_ctx.device();
+    const auto
     auto& rr_graph = device_ctx.rr_graph;
 
     int num_layers = device_ctx.grid.get_num_layers();