diff options
| -rw-r--r-- | common/timing.cc | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/common/timing.cc b/common/timing.cc index 4e84fffe..ae9a95fe 100644 --- a/common/timing.cc +++ b/common/timing.cc @@ -177,10 +177,20 @@ struct Timing // the current output port, increment fanin counter for (auto i : input_ports) { DelayInfo comb_delay; + if (cell.second->ports[i].net->driver.cell == nullptr) + continue; bool is_path = ctx->getCellDelay(cell.second.get(), i, o->name, comb_delay); if (is_path) port_fanin[o]++; } + // If there is no fanin, add the port as a false startpoint + if (!port_fanin.count(o) && !net_data.count(o->net)) { + topographical_order.emplace_back(o->net); + TimingData td; + td.false_startpoint = true; + td.max_arrival = 0; + net_data[o->net][ClockEvent{async_clock, RISING_EDGE}] = td; + } } } } |