Merge pull request #7941 from The-OpenROAD-Project-staging/grt-fix-graph2d

maliberty · web-flow · commit 690f52390ef2 · 2025-08-02T07:11:26.000Z
grt: fix an H/V mixup in the Graph2D refactor
diff --git a/src/grt/src/fastroute/src/maze.cpp b/src/grt/src/fastroute/src/maze.cpp
@@ -2010,7 +2010,7 @@ int FastRouteCore::getOverflow2D(int* maxOverflow)
   }
 
   for (const auto& [x, y] : graph2d_.getUsedGridsV()) {
-    total_usage += graph2d_.getEstUsageH(x, y);
+    total_usage += graph2d_.getEstUsageV(x, y);
     const int overflow = graph2d_.getEstUsageV(x, y) - graph2d_.getCapV(x, y);
     vCap += graph2d_.getCapV(x, y);
     if (overflow > 0) {

Original file line number	Diff line number	Diff line change
`@@ -2010,7 +2010,7 @@ int FastRouteCore::getOverflow2D(int* maxOverflow)`
`2010`	`2010`	`}`
`2011`	`2011`
`2012`	`2012`	`for (const auto& [x, y] : graph2d_.getUsedGridsV()) {`
`2013`		`- total_usage += graph2d_.getEstUsageH(x, y);`
	`2013`	`+ total_usage += graph2d_.getEstUsageV(x, y);`
`2014`	`2014`	`const int overflow = graph2d_.getEstUsageV(x, y) - graph2d_.getCapV(x, y);`
`2015`	`2015`	`vCap += graph2d_.getCapV(x, y);`
`2016`	`2016`	`if (overflow > 0) {`