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Constant driven signals are also an input to submodules

This commit is contained in:
Eddie Hung 2019-11-22 17:23:51 -08:00
parent 4fdcf8f7d7
commit 8119383f81
1 changed files with 10 additions and 2 deletions
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12
passes/hierarchy/submod.cc
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@ -33,7 +33,7 @@ struct SubmodWorker
CellTypes ct;
RTLIL::Design *design;
RTLIL::Module *module;
pool<Wire*> outputs;
pool<Wire*> constants, outputs;
bool copy_mode;
std::string opt_name;
@ -125,7 +125,7 @@ struct SubmodWorker
RTLIL::Wire *wire = it.first;
wire_flags_t &flags = it.second;
if (wire->port_input)
if (wire->port_input || constants.count(wire))
flags.is_ext_driven = true;
if (wire->port_output || outputs.count(wire))
flags.is_ext_used = true;
@ -235,6 +235,14 @@ struct SubmodWorker
outputs.insert(c.wire);
}
}
for (auto wire : module->wires()) {
auto sig = sigmap(wire);
for (auto c : sig.chunks()) {
if (c.wire)
continue;
constants.insert(wire);
}
}
if (opt_name.empty())
{