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"abc_padding" attr for blackbox outputs that were padded, remove them later

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This commit is contained in:
Eddie Hung 2019-09-23 21:58:40 -07:00
parent c340fbfab2
commit 44374b1b2b
2 changed files with 22 additions and 4 deletions
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7
backends/aiger/xaiger.cc
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@ -350,6 +350,8 @@ struct XAigerWriter
if (!box_module || !box_module->attributes.count("\\abc_box_id"))
continue;
bool blackbox = box_module->get_blackbox_attribute(true /* ignore_wb */);
// Fully pad all unused input connections of this box cell with S0
// Fully pad all undriven output connections of this box cell with anonymous wires
// NB: Assume box_module->ports are sorted alphabetically
@ -394,7 +396,10 @@ struct XAigerWriter
rhs = it->second;
}
else {
rhs = module->addWire(NEW_ID, GetSize(w));
Wire *wire = module->addWire(NEW_ID, GetSize(w));
if (blackbox)
wire->set_bool_attribute(ID(abc_padding));
rhs = wire;
cell->setPort(port_name, rhs);
}