From 47cd53debb0f9f50d525a19688d1a8885b59d72d Mon Sep 17 00:00:00 2001
From: Eddie Hung <eddie.hung@amd.com>
Date: Fri, 12 Jul 2024 15:35:11 -0700
Subject: [PATCH] mprove RouteNodeGraph.isAccessible() for cross-SLR

Signed-off-by: Eddie Hung <eddie.hung@amd.com>
---
 src/com/xilinx/rapidwright/rwroute/RouteNodeGraph.java | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/src/com/xilinx/rapidwright/rwroute/RouteNodeGraph.java b/src/com/xilinx/rapidwright/rwroute/RouteNodeGraph.java
index f66cd5167..cdd3cfa07 100644
--- a/src/com/xilinx/rapidwright/rwroute/RouteNodeGraph.java
+++ b/src/com/xilinx/rapidwright/rwroute/RouteNodeGraph.java
@@ -560,8 +560,9 @@ public boolean isAccessible(RouteNode childRnode, Connection connection) {
         }
 
         int childX = childTile.getTileXCoordinate();
-        if (connection.isCrossSLR() && nextLagunaColumn[childX] == childX) {
-            // Connection crosses SLR and this is a Laguna column
+        if (connection.getSinkRnode().getSLRIndex() != childRnode.getSLRIndex() &&
+                nextLagunaColumn[childX] == childX) {
+            // Connection needs to cross SLRs and this is a Laguna column
             return true;
         }