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Fix broken abc9.v test due to inout being 1'bx

This commit is contained in:
Eddie Hung 2019-06-20 19:27:00 -07:00
parent eb09ea6d54
commit 9faeba7a66
2 changed files with 21 additions and 5 deletions
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13
backends/aiger/xaiger.cc
View File

@ -75,6 +75,7 @@ struct XAigerWriter
dict<SigBit, int> ordered_outputs;
vector<Cell*> box_list;
bool omode = false;
int mkgate(int a0, int a1)
{
@ -409,9 +410,9 @@ struct XAigerWriter
// If encountering an inout port, or a keep-ed wire, then create a new wire
// with $inout.out suffix, make it a PO driven by the existing inout, and
// inherit existing inout's drivers
if ((wire->port_input && wire->port_output && !undriven_bits.count(bit))
if ((wire->port_input && wire->port_output && output_bits.count(bit) && !undriven_bits.count(bit))
|| wire->attributes.count("\\keep")) {
log_assert(input_bits.count(bit) && output_bits.count(bit));
log_assert(output_bits.count(bit));
RTLIL::IdString wire_name = wire->name.str() + "$inout.out";
RTLIL::Wire *new_wire = module->wire(wire_name);
if (!new_wire)
@ -486,6 +487,12 @@ struct XAigerWriter
ordered_outputs[bit] = aig_o++;
aig_outputs.push_back(bit2aig(bit));
}
if (output_bits.empty()) {
aig_o++;
aig_outputs.push_back(0);
omode = true;
}
}
void write_aiger(std::ostream &f, bool ascii_mode)
@ -741,6 +748,8 @@ struct XAigerWriter
for (auto &it : output_lines)
f << it.second;
log_assert(output_lines.size() == output_bits.size());
if (omode && output_bits.empty())
f << "output " << output_lines.size() << " 0 $__dummy__\n";
wire_lines.sort();
for (auto &it : wire_lines)

13
frontends/aiger/aigerparse.cc
View File

@ -839,6 +839,10 @@ void AigerReader::post_process()
RTLIL::Wire* wire = outputs[variable + co_count];
log_assert(wire);
log_assert(wire->port_output);
if (escaped_s == "$__dummy__") {
wire->port_output = false;
continue;
}
if (index == 0) {
// Cope with the fact that a CO might be identical
@ -948,12 +952,15 @@ void AigerReader::post_process()
other_wire->port_input = false;
other_wire->port_output = false;
}
if (wire->port_input && other_wire)
module->connect(other_wire, SigSpec(wire, i));
else
if (wire->port_input) {
if (other_wire)
module->connect(other_wire, SigSpec(wire, i));
}
else {
// Since we skip POs that are connected to Sx,
// re-connect them here
module->connect(SigSpec(wire, i), other_wire ? other_wire : SigSpec(RTLIL::Sx));
}
}
}