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-rw-r--r--backends/aiger/xaiger.cc169
1 files changed, 89 insertions, 80 deletions
diff --git a/backends/aiger/xaiger.cc b/backends/aiger/xaiger.cc
index 4cbf49baf..b6a7dbac2 100644
--- a/backends/aiger/xaiger.cc
+++ b/backends/aiger/xaiger.cc
@@ -407,7 +407,7 @@ struct XAigerWriter
}
if (w->port_output) {
RTLIL::SigSpec rhs;
- auto it = cell->connections_.find(w->name);
+ auto it = cell->connections_.find(port_name);
if (it != cell->connections_.end()) {
if (GetSize(it->second) < GetSize(w))
it->second.append(module->addWire(NEW_ID, GetSize(w)-GetSize(it->second)));
@@ -614,7 +614,7 @@ struct XAigerWriter
RTLIL::Module *holes_module = module->design->addModule("$__holes__");
log_assert(holes_module);
- dict<IdString, Cell*> cell_cache;
+ dict<IdString, std::tuple<Cell*,int,int,int>> cell_cache;
int port_id = 1;
int box_count = 0;
@@ -623,86 +623,94 @@ struct XAigerWriter
log_assert(orig_box_module);
IdString derived_name = orig_box_module->derive(module->design, cell->parameters);
RTLIL::Module* box_module = module->design->module(derived_name);
- if (box_module->has_processes())
- Pass::call_on_module(module->design, box_module, "proc");
-
- bool whitebox = box_module->get_bool_attribute("\\whitebox");
- auto r = cell_cache.insert(std::make_pair(derived_name, nullptr));
- Cell *holes_cell = r.first->second;
- if (r.second && whitebox) {
- holes_cell = holes_module->addCell(cell->name, cell->type);
- holes_cell->parameters = cell->parameters;
- r.first->second = holes_cell;
- }
- int box_inputs = 0, box_outputs = 0;
- for (auto port_name : box_ports.at(cell->type)) {
- RTLIL::Wire *w = box_module->wire(port_name);
- log_assert(w);
- RTLIL::Wire *holes_wire;
- RTLIL::SigSpec port_sig;
-
- if (w->port_input) {
- if (whitebox)
- for (int i = 0; i < GetSize(w); i++) {
- box_inputs++;
- holes_wire = holes_module->wire(stringf("\\i%d", box_inputs));
- if (!holes_wire) {
- holes_wire = holes_module->addWire(stringf("\\i%d", box_inputs));
- holes_wire->port_input = true;
- holes_wire->port_id = port_id++;
- holes_module->ports.push_back(holes_wire->name);
+ auto r = cell_cache.insert(derived_name);
+ auto &v = r.first->second;
+ if (r.second) {
+ if (box_module->has_processes())
+ Pass::call_on_module(module->design, box_module, "proc");
+
+ int box_inputs = 0, box_outputs = 0;
+ if (box_module->get_bool_attribute("\\whitebox")) {
+ auto holes_cell = holes_module->addCell(cell->name, derived_name);
+ for (auto port_name : box_ports.at(cell->type)) {
+ RTLIL::Wire *w = box_module->wire(port_name);
+ log_assert(w);
+ log_assert(!w->port_input || !w->port_output);
+ auto &conn = holes_cell->connections_[port_name];
+ if (w->port_input) {
+ for (int i = 0; i < GetSize(w); i++) {
+ box_inputs++;
+ RTLIL::Wire *holes_wire = holes_module->wire(stringf("\\i%d", box_inputs));
+ if (!holes_wire) {
+ holes_wire = holes_module->addWire(stringf("\\i%d", box_inputs));
+ holes_wire->port_input = true;
+ holes_wire->port_id = port_id++;
+ holes_module->ports.push_back(holes_wire->name);
+ }
+ conn.append(holes_wire);
}
- if (holes_cell)
- port_sig.append(holes_wire);
}
- else
- box_inputs += GetSize(w);
- }
- if (w->port_output) {
- box_outputs += GetSize(w);
- for (int i = 0; i < GetSize(w); i++) {
- if (GetSize(w) == 1)
- holes_wire = holes_module->addWire(stringf("$abc%s.%s", cell->name.c_str(), log_id(w->name)));
- else
- holes_wire = holes_module->addWire(stringf("$abc%s.%s[%d]", cell->name.c_str(), log_id(w->name), i));
- holes_wire->port_output = true;
- holes_wire->port_id = port_id++;
- holes_module->ports.push_back(holes_wire->name);
- if (holes_cell)
- port_sig.append(holes_wire);
- else
- holes_module->connect(holes_wire, State::S0);
+ else if (w->port_output) {
+ box_outputs += GetSize(w);
+ conn = holes_module->addWire(stringf("%s.%s", derived_name.c_str(), log_id(port_name)), GetSize(w));
+ }
}
+
+ // For flops only, create an extra 1-bit input that drives a new wire
+ // called "<cell>.abc9_ff.Q" that is used below
+ if (box_module->get_bool_attribute("\\abc9_flop")) {
+ box_inputs++;
+ Wire *holes_wire = holes_module->wire(stringf("\\i%d", box_inputs));
+ if (!holes_wire) {
+ holes_wire = holes_module->addWire(stringf("\\i%d", box_inputs));
+ holes_wire->port_input = true;
+ holes_wire->port_id = port_id++;
+ holes_module->ports.push_back(holes_wire->name);
+ }
+ Wire *Q = holes_module->addWire(stringf("%s.abc9_ff.Q", cell->name.c_str()));
+ holes_module->connect(Q, holes_wire);
+ }
+
+ std::get<0>(v) = holes_cell;
}
- if (!port_sig.empty()) {
- if (r.second)
- holes_cell->setPort(w->name, port_sig);
- else
- holes_module->connect(holes_cell->getPort(w->name), port_sig);
+ else {
+ for (auto port_name : box_ports.at(cell->type)) {
+ RTLIL::Wire *w = box_module->wire(port_name);
+ log_assert(w);
+ log_assert(!w->port_input || !w->port_output);
+ if (w->port_input)
+ box_inputs += GetSize(w);
+ else if (w->port_output)
+ box_outputs += GetSize(w);
+ }
+ log_assert(std::get<0>(v) == nullptr);
}
+
+ std::get<1>(v) = box_inputs;
+ std::get<2>(v) = box_outputs;
+ std::get<3>(v) = box_module->attributes.at("\\abc9_box_id").as_int();
}
- // For flops only, create an extra 1-bit input that drives a new wire
- // called "<cell>.abc9_ff.Q" that is used below
- if (box_module->get_bool_attribute("\\abc9_flop")) {
- log_assert(holes_cell);
-
- box_inputs++;
- Wire *holes_wire = holes_module->wire(stringf("\\i%d", box_inputs));
- if (!holes_wire) {
- holes_wire = holes_module->addWire(stringf("\\i%d", box_inputs));
- holes_wire->port_input = true;
- holes_wire->port_id = port_id++;
- holes_module->ports.push_back(holes_wire->name);
- }
- Wire *w = holes_module->addWire(stringf("%s.abc9_ff.Q", cell->name.c_str()));
- holes_module->connect(w, holes_wire);
+ auto holes_cell = std::get<0>(v);
+ for (auto port_name : box_ports.at(cell->type)) {
+ RTLIL::Wire *w = box_module->wire(port_name);
+ log_assert(w);
+ if (!w->port_output)
+ continue;
+ Wire *holes_wire = holes_module->addWire(stringf("$abc%s.%s", cell->name.c_str(), log_id(port_name)), GetSize(w));
+ holes_wire->port_output = true;
+ holes_wire->port_id = port_id++;
+ holes_module->ports.push_back(holes_wire->name);
+ if (holes_cell) // whitebox
+ holes_module->connect(holes_wire, holes_cell->getPort(port_name));
+ else // blackbox
+ holes_module->connect(holes_wire, Const(State::S0, GetSize(w)));
}
- write_h_buffer(box_inputs);
- write_h_buffer(box_outputs);
- write_h_buffer(box_module->attributes.at("\\abc9_box_id").as_int());
+ write_h_buffer(std::get<1>(v));
+ write_h_buffer(std::get<2>(v));
+ write_h_buffer(std::get<3>(v));
write_h_buffer(box_count++);
}
@@ -762,14 +770,14 @@ struct XAigerWriter
// created a new $paramod ...
Pass::call_on_module(holes_module->design, holes_module, "flatten -wb; techmap; aigmap");
- dict<SigSig, SigSig> replace;
+ dict<SigSpec, SigSpec> replace;
for (auto it = holes_module->cells_.begin(); it != holes_module->cells_.end(); ) {
auto cell = it->second;
if (cell->type.in("$_DFF_N_", "$_DFF_NN0_", "$_DFF_NN1_", "$_DFF_NP0_", "$_DFF_NP1_",
"$_DFF_P_", "$_DFF_PN0_", "$_DFF_PN1", "$_DFF_PP0_", "$_DFF_PP1_")) {
SigBit D = cell->getPort("\\D");
SigBit Q = cell->getPort("\\Q");
- // Remove the DFF cell from what needs to be a combinatorial box
+ // Remove the $_DFF_* cell from what needs to be a combinatorial box
it = holes_module->cells_.erase(it);
Wire *port;
if (GetSize(Q.wire) == 1)
@@ -777,10 +785,10 @@ struct XAigerWriter
else
port = holes_module->wire(stringf("$abc%s[%d]", Q.wire->name.c_str(), Q.offset));
log_assert(port);
- // Prepare to replace "assign <port> = DFF.Q;" with "assign <port> = DFF.D;"
- // in order to extract the combinatorial control logic that feeds the box
+ // Prepare to replace "assign <port> = $_DFF_*.Q;" with "assign <port> = $_DFF_*.D;"
+ // in order to extract just the combinatorial control logic that feeds the box
// (i.e. clock enable, synchronous reset, etc.)
- replace.insert(std::make_pair(SigSig(port,Q), SigSig(port,D)));
+ replace.insert(std::make_pair(Q,D));
// Since `flatten` above would have created wires named "<cell>.Q",
// extract the pre-techmap cell name
auto pos = Q.wire->name.str().rfind(".");
@@ -788,7 +796,7 @@ struct XAigerWriter
IdString driver = Q.wire->name.substr(0, pos);
// And drive the signal that was previously driven by "DFF.Q" (typically
// used to implement clock-enable functionality) with the "<cell>.abc9_ff.Q"
- // wire (which itself is driven an input port) we inserted above
+ // wire (which itself is driven by an input port) we inserted above
Wire *currQ = holes_module->wire(stringf("%s.abc9_ff.Q", driver.c_str()));
log_assert(currQ);
holes_module->connect(Q, currQ);
@@ -799,10 +807,11 @@ struct XAigerWriter
++it;
}
+ SigMap holes_sigmap(holes_module);
for (auto &conn : holes_module->connections_) {
- auto it = replace.find(conn);
+ auto it = replace.find(sigmap(conn.second));
if (it != replace.end())
- conn = it->second;
+ conn.second = it->second;
}
// Move into a new (temporary) design so that "clean" will only
generated by cgit v1.2.3 (git 2.25.1) at 2025-11-04 13:30:56 +0000