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Small LVS enhancement: reject backtracking branch if it leads to ambiguous name conflicts

This commit is contained in:
Matthias Koefferlein 2021-04-13 22:57:08 +02:00
parent f81b6588b6
commit 6ea04d6c27
1 changed files with 19 additions and 0 deletions
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19
src/db/db/dbNetlistCompare.cc
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@ -2382,6 +2382,25 @@ NetGraph::derive_node_identities_from_ambiguity_group (const NodeRange &nr, Devi
std::vector<std::pair<const NetGraphNode *, NetGraphNode::edge_iterator> >::const_iterator i1 = *ii1;
// in tentative mode, reject this choice if nets are named and all other nets in the ambiguity group differ -> this favors net matching by name
if (! data->dont_consider_net_names && tentative) {
bool any_matching = false;
for (std::vector<std::vector<std::pair<const NetGraphNode *, NetGraphNode::edge_iterator> >::const_iterator>::iterator ii2 = iters2.begin (); ii2 != iters2.end () && ! any_matching; ++ii2) {
std::vector<std::pair<const NetGraphNode *, NetGraphNode::edge_iterator> >::const_iterator i2 = *ii2;
any_matching = !net_names_are_different (i1->first->net (), i2->first->net ());
}
if (! any_matching) {
if (options ()->debug_netcompare) {
tl::info << indent_s << "ambiguity group rejected - all ambiguous other net names are mismatching for: " << i1->first->net ()->expanded_name ();
}
// a mismatch - stop here.
return failed_match;
}
}
bool any = false;
std::vector<std::vector<std::pair<const NetGraphNode *, NetGraphNode::edge_iterator> >::const_iterator>::iterator to_remove = iters2.end ();