diff options
Diffstat (limited to 'common')
| -rw-r--r-- | common/command.cc | 6 | ||||
| -rw-r--r-- | common/timing.cc | 5 |
2 files changed, 8 insertions, 3 deletions
diff --git a/common/command.cc b/common/command.cc index 6ba3442f..8f18f54d 100644 --- a/common/command.cc +++ b/common/command.cc @@ -124,6 +124,8 @@ po::options_description CommandHandler::getGeneralOptions() general.add_options()("cstrweight", po::value<float>(), "placer weighting for relative constraint satisfaction"); general.add_options()("pack-only", "pack design only without placement or routing"); + general.add_options()("ignore-loops", "ignore combinational loops in timing analysis"); + general.add_options()("version,V", "show version"); general.add_options()("test", "check architecture database integrity"); general.add_options()("freq", po::value<double>(), "set target frequency for design in MHz"); @@ -172,6 +174,10 @@ void CommandHandler::setupContext(Context *ctx) } } + if (vm.count("ignore-loops")) { + settings->set("timing/ignoreLoops", true); + } + if (vm.count("cstrweight")) { settings->set("placer1/constraintWeight", vm["cstrweight"].as<float>()); } diff --git a/common/timing.cc b/common/timing.cc index b27dd56e..13f0e07b 100644 --- a/common/timing.cc +++ b/common/timing.cc @@ -225,7 +225,7 @@ struct Timing } // Sanity check to ensure that all ports where fanins were recorded were indeed visited - if (!port_fanin.empty()) { + if (!port_fanin.empty() && !bool_or_default(ctx->settings, ctx->id("timing/ignoreLoops"), false)) { for (auto fanin : port_fanin) { NetInfo *net = fanin.first->net; if (net != nullptr) { @@ -267,8 +267,7 @@ struct Timing auto net_delay = net_delays ? ctx->getNetinfoRouteDelay(net, usr) : delay_t(); auto usr_arrival = net_arrival + net_delay; - if (portClass == TMG_REGISTER_INPUT || portClass == TMG_ENDPOINT || portClass == TMG_IGNORE || - portClass == TMG_CLOCK_INPUT) { + if (portClass == TMG_ENDPOINT || portClass == TMG_IGNORE || portClass == TMG_CLOCK_INPUT) { // Skip } else { auto budget_override = ctx->getBudgetOverride(net, usr, net_delay); |