From 07b836236807b6f673db3d5cf0fc5a9c15e1c562 Mon Sep 17 00:00:00 2001
From: Matthias Koefferlein <matthias@klayout.de>
Date: Thu, 29 Jun 2023 23:09:16 +0200
Subject: [PATCH] Small performance enhancement of cell mapping

---
 src/db/db/dbCellMapping.cc | 10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)

diff --git a/src/db/db/dbCellMapping.cc b/src/db/db/dbCellMapping.cc
index 1cb4d698d..de115e629 100644
--- a/src/db/db/dbCellMapping.cc
+++ b/src/db/db/dbCellMapping.cc
@@ -151,10 +151,6 @@ public:
 
     }
 
-    std::set<db::cell_index_type> callers_b;
-    m_layout_b.cell (cell_b).collect_caller_cells (callers_b, selection_cone_b, -1);
-    callers_b.insert (cell_b);
-
     m_repr_set = false;
 
     std::map<db::cell_index_type, db::ICplxTrans>::const_iterator r = m_repr.find (cell_b);
@@ -164,7 +160,11 @@ public:
         return false;
       }
     }
-    
+
+    std::set<db::cell_index_type> callers_b;
+    m_layout_b.cell (cell_b).collect_caller_cells (callers_b, selection_cone_b, -1);
+    callers_b.insert (cell_b);
+
     trans_set_t trans (m_trans);
 
     double mag = m_layout_b.dbu () / m_layout_a.dbu ();