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timinginfo: arrival/required times with clocks

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This commit is contained in:
Eddie Hung 2020-02-18 18:00:07 -08:00
parent b96866c456
commit ddbe81df78
4 changed files with 63 additions and 66 deletions
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18
passes/cmds/sta.cc
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@ -82,7 +82,7 @@ struct StaWorker
auto it = t.required.find(namebit);
if (it == t.required.end())
continue;
endpoints[bit] = it->second;
endpoints[bit] = it->second.first;
}
if (cell->output(conn.first)) {
dst_bits.insert(std::make_pair(bit,namebit));
@ -90,14 +90,8 @@ struct StaWorker
auto it = t.arrival.find(namebit);
if (it == t.arrival.end())
continue;
auto arrivals = bit.wire->get_intvec_attribute(ID(sta_arrival));
if (arrivals.empty())
arrivals = std::vector<int>(GetSize(bit.wire), -1);
else
log_assert(GetSize(arrivals) == GetSize(bit.wire));
arrivals[bit.offset] = it->second;
bit.wire->set_intvec_attribute(ID(sta_arrival), arrivals);
queue.emplace_back(bit);
const auto &s = it->second.second;
fanouts[cell->getPort(s.name)[s.offset]].emplace_back(bit,it->second.first);
}
}
}
@ -143,7 +137,7 @@ struct StaWorker
auto new_arrival = src_arrival + d.second + endpoints.at(d.first, 0);
if (dst_arrival < new_arrival) {
dst_arrival = std::max(dst_arrival, new_arrival);
if (dst_arrival > maxarrival) {
if (endpoints.count(d.first) && dst_arrival > maxarrival) {
maxarrival = dst_arrival;
maxbit = d.first;
}
@ -169,6 +163,10 @@ struct StaWorker
std::map<int, unsigned> arrival_histogram;
for (const auto &i : endpoints) {
const auto &b = i.first;
if (!b.wire->attributes.count(ID(sta_arrival))) {
log_warning("Wire %s.%s has no (* sta_arrival *) value.\n", log_id(module), log_signal(b));
continue;
}
auto arrival = b.wire->get_intvec_attribute(ID(sta_arrival))[b.offset];
arrival += i.second;
arrival_histogram[arrival]++;