check that node layer matches between indices and graph

Author: soheilshahrouz

vpr/src/route/rr_graph_generation/rr_node_indices.cpp

@@ -482,6 +482,13 @@ bool verify_rr_node_indices(const DeviceGrid& grid,
                                       describe_rr_node(rr_graph, grid, rr_indexed_data, inode, is_flat).c_str());
                         }
 
+                        if (rr_graph.node_layer(inode) != l) {
+                            VPR_ERROR(VPR_ERROR_ROUTE, "RR node layer does not match between rr_nodes and rr_node_indices (%s/%s): %s",
+                                      rr_node_typename[rr_graph.node_type(inode)],
+                                      rr_node_typename[rr_type],
+                                      describe_rr_node(rr_graph, grid, rr_indexed_data, inode, is_flat).c_str());
+                        }
+
                         if (rr_graph.node_type(inode) == e_rr_type::CHANX) {
                             VTR_ASSERT_MSG(rr_graph.node_ylow(inode) == rr_graph.node_yhigh(inode), "CHANX should be horizontal");
                             if (y != rr_graph.node_ylow(inode)) {