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-rw-r--r--passes/techmap/abc9_ops.cc8
1 files changed, 6 insertions, 2 deletions
diff --git a/passes/techmap/abc9_ops.cc b/passes/techmap/abc9_ops.cc
index 4da10d94b..d7ebfdf3f 100644
--- a/passes/techmap/abc9_ops.cc
+++ b/passes/techmap/abc9_ops.cc
@@ -488,7 +488,9 @@ void reintegrate(RTLIL::Module *module)
RTLIL::SigBit a_bit = mapped_cell->getPort(ID::A);
RTLIL::SigBit y_bit = mapped_cell->getPort(ID::Y);
bit_users[a_bit].insert(mapped_cell->name);
- bit_drivers[y_bit].insert(mapped_cell->name);
+ // Ignore inouts for topo ordering
+ if (y_bit.wire && !(y_bit.wire->port_input && y_bit.wire->port_output))
+ bit_drivers[y_bit].insert(mapped_cell->name);
if (!a_bit.wire) {
mapped_cell->setPort(ID::Y, module->addWire(NEW_ID));
@@ -598,7 +600,9 @@ void reintegrate(RTLIL::Module *module)
for (const auto &i : inputs)
bit_users[i].insert(mapped_cell->name);
for (const auto &i : outputs)
- bit_drivers[i].insert(mapped_cell->name);
+ // Ignore inouts for topo ordering
+ if (i.wire && !(i.wire->port_input && i.wire->port_output))
+ bit_drivers[i].insert(mapped_cell->name);
}
int input_count = 0, output_count = 0;