Add fallback to estimateDelay() in getNetinfoRouteDelay()

Signed-off-by: Clifford Wolf <clifford@clifford.at>

1 files changed, 6 insertions, 1 deletions

diff --git a/common/nextpnr.cc b/common/nextpnr.cc
index 74747642..2c50c9a1 100644
--- a/common/nextpnr.cc
+++ b/common/nextpnr.cc
@@ -92,7 +92,7 @@ delay_t Context::getNetinfoRouteDelay(NetInfo *net_info, int user_idx) const
 {
     WireId src_wire = getNetinfoSourceWire(net_info);
     WireId cursor = getNetinfoSinkWire(net_info, user_idx);
-    delay_t delay = getWireDelay(src_wire).maxDelay();
+    delay_t delay = 0;
 
     while (cursor != WireId() && cursor != src_wire) {
         auto it = net_info->wires.find(cursor);
@@ -104,6 +104,11 @@ delay_t Context::getNetinfoRouteDelay(NetInfo *net_info, int user_idx) const
         cursor = getPipSrcWire(pip);
     }
 
+    if (cursor == src_wire)
+        delay += getWireDelay(src_wire).maxDelay();
+    else
+        delay += estimateDelay(src_wire, cursor);
+
     return delay;
 }