diff options
| -rw-r--r-- | common/route.cc | 49 |
1 files changed, 49 insertions, 0 deletions
diff --git a/common/route.cc b/common/route.cc index 952c266b..17e3b63b 100644 --- a/common/route.cc +++ b/common/route.cc @@ -318,6 +318,55 @@ void route_design(Design *design, bool verbose) log_info("found %d unrouted nets. starting routing procedure.\n", int(netsQueue.size())); + float estimatedTotalDelay = 0.0; + int estimatedTotalDelayCnt = 0; + + for (auto net_name : netsQueue) { + auto net_info = design->nets.at(net_name); + + auto src_bel = net_info->driver.cell->bel; + + if (src_bel == BelId()) + continue; + + IdString driver_port = net_info->driver.port; + + auto driver_port_it = net_info->driver.cell->pins.find(driver_port); + if (driver_port_it != net_info->driver.cell->pins.end()) + driver_port = driver_port_it->second; + + auto src_wire = chip.getWireBelPin(src_bel, portPinFromId(driver_port)); + + if (src_wire == WireId()) + continue; + + for (auto &user_it : net_info->users) { + auto dst_bel = user_it.cell->bel; + + if (dst_bel == BelId()) + continue; + + IdString user_port = user_it.port; + + auto user_port_it = user_it.cell->pins.find(user_port); + + if (user_port_it != user_it.cell->pins.end()) + user_port = user_port_it->second; + + auto dst_wire = + chip.getWireBelPin(dst_bel, portPinFromId(user_port)); + + if (dst_wire == WireId()) + continue; + + estimatedTotalDelay += chip.estimateDelay(src_wire, dst_wire); + estimatedTotalDelayCnt++; + } + } + + log_info("estimated total wire delay: %.2f (avg %.2f)\n", + estimatedTotalDelay, estimatedTotalDelay / estimatedTotalDelayCnt); + while (!netsQueue.empty()) { int visitCnt = 0, revisitCnt = 0, netCnt = 0; |