grt: fix missing references to overflow

Signed-off-by: Eder Monteiro <emrmonteiro@precisioninno.com>

Author: eder-matheus

src/grt/README.md

@@ -40,7 +40,7 @@ global_route
 | Switch Name | Description | 
 | ----- | ----- |
 | `-guide_file` | Set the output guides file name (e.g., `route.guide`). |
-| `-congestion_iterations` | Set the number of iterations made to remove the overflow of the routing. The default value is `50`, and the allowed values are integers `[0, MAX_INT]`. |
+| `-congestion_iterations` | Set the number of iterations made to remove the congestion of the routing. The default value is `50`, and the allowed values are integers `[0, MAX_INT]`. |
 | `-congestion_report_file` | Set the file name to save the congestion report. The file generated can be read by the DRC viewer in the GUI (e.g., `report_file.rpt`). |
 | `-congestion_report_iter_step` | Set the number of iterations to report. The default value is `0`, and the allowed values are integers `[0, MAX_INT]`. |
 | `-grid_origin` | Set the (x, y) origin of the routing grid in DBU. For example, `-grid_origin {1 1}` corresponds to the die (0, 0) + 1 DBU in each x--, y- direction. |
@@ -295,7 +295,7 @@ global_route_debug
 | ----- | ----- |
 | `-st` | Show the Steiner Tree generated by `stt`. |
 | `-rst` | Show the Rectilinear Steiner Tree generated by `grt`. |
-| `-tree2D` | Show the Rectilinear Steiner Tree generated by `grt` after the overflow iterations. |
+| `-tree2D` | Show the Rectilinear Steiner Tree generated by `grt` after the congestion iterations. |
 | `-tree3D` | Show the 3D Rectilinear Steiner Tree post-layer assignment. |
 | `-edges3D` | Show each edge being rerouted post-layer assignment. |
 | `-saveSttInput` | File name to save `stt` input of a net. |

src/grt/src/GlobalRouter.tcl

@@ -411,7 +411,7 @@ proc read_global_route_segments { args } {
 sta::define_cmd_args "global_route_debug" {
   [-st]       # Show the Steiner Tree generated by stt
   [-rst]      # Show the Rectilinear Steiner Tree generated by FastRoute
-  [-tree2D]   # Show the Rectilinear Steiner Tree generated by FastRoute after overflow iterations
+  [-tree2D]   # Show the Rectilinear Steiner Tree generated by FastRoute after congestion iterations
   [-tree3D]   # Show The Rectilinear Steiner Tree 3D after layer assignment
   [-edges3D]  # Show edges being rerouted during maze route 3D
   [-saveSttInput file_name] # Save the stt input for a net on file_name