Removed mirror_nodes()

Author: Nathan Shreve

libs/librrgraph/src/base/rr_spatial_lookup.cpp

@@ -285,16 +285,6 @@ void RRSpatialLookup::remove_node(RRNodeId node,
     rr_node_indices_[type][layer][x][y][side][ptc] = -1;
 }
 
-void RRSpatialLookup::mirror_nodes(const int layer,
-                                   const vtr::Point<int>& src_coord,
-                                   const vtr::Point<int>& des_coord,
-                                   t_rr_type type,
-                                   e_side side) {
-    VTR_ASSERT(SOURCE == type || SINK == type);
-    resize_nodes(layer, des_coord.x(), des_coord.y(), type, side);
-    rr_node_indices_[type][layer][des_coord.x()][des_coord.y()][side] = rr_node_indices_[type][layer][src_coord.x()][src_coord.y()][side];
-}
-
 void RRSpatialLookup::resize_nodes(int layer,
                                    int x,
                                    int y,

libs/librrgraph/src/base/rr_spatial_lookup.h

@@ -184,51 +184,6 @@ class RRSpatialLookup {
                      int ptc,
                      e_side side = SIDES[0]);
 
-    /**
-     * @brief Mirror the last dimension of a look-up, i.e., a list of nodes, from a source coordinate to 
-     * a destination coordinate.
-     *
-     * This function is mostly need by SOURCE and SINK nodes which are indexable in multiple locations.
-     * Considering a bounding box (layer, x, y)->(layer, x + width, y + height) of a multi-height and multi-width grid,
-     * SOURCE and SINK nodes are indexable in any location inside the boundry.
-     *
-     * An example of usage: 
-     *
-     *
-     * ``` 
-     *   // Create a empty lookup
-     *   RRSpatialLookup rr_lookup;
-     *   // Adding other nodes ...
-     *   // Copy the nodes whose types are SOURCE at (1, 1) to (1, 2)
-     *   rr_lookup.mirror_nodes(vtr::Point<int>(1, 1),
-     *                          vtr::Point<int>(1, 2),
-     *                          SOURCE,
-     *                          TOP);
-     * ```
-     *
-     * @note currently this function only accepts SOURCE/SINK nodes. May unlock for the other types 
-     * depending on needs
-     */
-    /*
-     * TODO: Consider to make a high-level API to duplicate the nodes for large blocks. 
-     * Then this API can become a private one
-     * For example, 
-     *
-     *
-     * ```
-     *   expand_nodes(source_coordinate, bounding_box_coordinate, type, side);
-     * ```
-     *
-     * Alternatively, we can rework the ``find_node()`` API so that we always search the lowest (x,y) 
-     * corner when dealing with large blocks. But this may require the data structure to be dependent 
-     * on DeviceGrid information (it needs to identify if a grid has height > 1 as well as width > 1)
-     */
-    void mirror_nodes(const int layer,
-                      const vtr::Point<int>& src_coord,
-                      const vtr::Point<int>& des_coord,
-                      t_rr_type type,
-                      e_side side);
-
     /**
      * @brief Resize the given 4 dimensions (layer, x, y, side) of the RRSpatialLookup data structure for the given type
      *