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router2: debugging some edge cases

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Signed-off-by: David Shah <dave@ds0.me>
This commit is contained in:
David Shah 2019-11-29 11:37:04 +00:00
parent bbc9c9b0ba
commit 50b120528a
1 changed files with 10 additions and 10 deletions
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20
common/router2.cc
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@ -155,7 +155,7 @@ struct Router2
}
}
boost::container::flat_map<WireId, PerWireData> wires;
std::unordered_map<WireId, PerWireData> wires;
void setup_wires()
{
// Set up per-wire structures, so that MT parts don't have to do any memory allocation
@ -458,6 +458,7 @@ struct Router2
int toexplore = 25000 * std::max(1, (ad.bb.x1 - ad.bb.x0) + (ad.bb.y1 - ad.bb.y0));
int iter = 0;
int explored = 1;
while (!t.queue.empty() && (!is_bb || iter < toexplore)) {
auto curr = t.queue.top();
t.queue.pop();
@ -497,6 +498,7 @@ struct Router2
curr.score.delay + ctx->getPipDelay(dh).maxDelay() + ctx->getWireDelay(next).maxDelay();
next_score.togo_cost = 1.75 * get_togo_cost(net, i, next, dst_wire);
if (!t.visited.count(next) || (t.visited.at(next).score.total() > next_score.total())) {
++explored;
#if 0
ROUTE_LOG_DBG("exploring wire %s cost %f togo %f\n", ctx->nameOfWire(next), next_score.cost,
next_score.togo_cost);
@ -505,25 +507,23 @@ struct Router2
t.queue.push(QueuedWire(next, dh, ctx->getPipLocation(dh), next_score, ctx->rng()));
t.visited[next].score = next_score;
t.visited[next].pip = dh;
if (next == dst_wire)
goto loop_done;
if (next == dst_wire) {
toexplore = std::min(toexplore, iter + 5);
}
}
}
if (false) {
loop_done:
break;
}
}
if (t.visited.count(dst_wire)) {
ROUTE_LOG_DBG(" Routed: ");
ROUTE_LOG_DBG(" Routed (explored %d wires): ", explored);
WireId cursor_bwd = dst_wire;
while (t.visited.count(cursor_bwd)) {
auto &v = t.visited.at(cursor_bwd);
bind_pip_internal(net, i, cursor_bwd, v.pip);
if (ctx->debug) {
auto &wd = wires.at(cursor_bwd);
ROUTE_LOG_DBG(" wire: %s (curr %d hist %f)\n", ctx->nameOfWire(cursor_bwd),
int(wd.bound_nets.size()) - 1, wd.hist_cong_cost);
ROUTE_LOG_DBG(" wire: %s (curr %d hist %f share %d)\n", ctx->nameOfWire(cursor_bwd),
int(wd.bound_nets.size()) - 1, wd.hist_cong_cost,
wd.bound_nets.count(net->udata) ? wd.bound_nets.at(net->udata).first : 0);
}
if (v.pip == PipId()) {
NPNR_ASSERT(cursor_bwd == src_wire);