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Add $anyconst/$anyseq support to btor back-end

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This commit is contained in:
Clifford Wolf 2017-12-15 00:40:24 +01:00
parent 162c29bd6b
commit ad901671c5
1 changed files with 51 additions and 13 deletions
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64
backends/btor/btor.cc
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@ -63,9 +63,9 @@ struct BtorWorker
vector<pair<int, Cell*>> ff_todo;
pool<Cell*> cell_recursion_guard;
pool<string> output_symbols;
vector<int> bad_properties;
dict<SigBit, bool> initbits;
pool<Wire*> statewires;
string indent;
void btorf(const char *fmt, ...)
@ -483,20 +483,23 @@ struct BtorWorker
SigSpec sig_d = sigmap(cell->getPort("\\D"));
SigSpec sig_q = sigmap(cell->getPort("\\Q"));
string symbol = log_signal(sig_q);
if (symbol.find(' ') != string::npos)
symbol = log_id(cell);
IdString symbol;
if (symbol[0] == '\\')
symbol = symbol.substr(1);
if (sig_q.is_wire()) {
Wire *w = sig_q.as_wire();
if (w->port_id == 0) {
statewires.insert(w);
symbol = w->name;
}
}
int sid = get_bv_sid(GetSize(sig_q));
int nid = next_nid++;
if (output_symbols.count(symbol))
if (symbol.empty())
btorf("%d state %d\n", nid, sid);
else
btorf("%d state %d %s\n", nid, sid, symbol.c_str());
btorf("%d state %d %s\n", nid, sid, log_id(symbol));
Const initval;
for (int i = 0; i < GetSize(sig_q); i++)
@ -508,7 +511,8 @@ struct BtorWorker
if (!initval.is_fully_undef()) {
int nid_init_val = get_sig_nid(initval);
int nid_init = next_nid++;
btorf("; initval = %s\n", log_signal(initval));
if (verbose)
btorf("; initval = %s\n", log_signal(initval));
btorf("%d init %d %d %d\n", nid_init, sid, nid, nid_init_val);
}
@ -517,6 +521,24 @@ struct BtorWorker
goto okay;
}
if (cell->type.in("$anyconst", "$anyseq"))
{
SigSpec sig_y = sigmap(cell->getPort("\\Y"));
int sid = get_bv_sid(GetSize(sig_y));
int nid = next_nid++;
btorf("%d state %d\n", nid, sid);
if (cell->type == "$anyconst") {
int nid2 = next_nid++;
btorf("%d next %d %d %d\n", nid2, sid, nid, nid);
}
add_nid_sig(nid, sig_y);
goto okay;
}
if (cell->type == "$initstate")
{
SigSpec sig_y = sigmap(cell->getPort("\\Y"));
@ -744,10 +766,6 @@ struct BtorWorker
bit_cell[bit] = cell;
}
for (auto wire : module->wires())
if (wire->port_output)
output_symbols.insert(log_id(wire));
for (auto wire : module->wires())
{
if (!wire->port_id || !wire->port_output)
@ -806,6 +824,26 @@ struct BtorWorker
}
}
for (auto wire : module->wires())
{
if (wire->port_id || wire->name[0] == '$')
continue;
btorf_push(stringf("wire %s", log_id(wire)));
int sid = get_bv_sid(GetSize(wire));
int nid = get_sig_nid(sigmap(wire));
if (statewires.count(wire))
continue;
int this_nid = next_nid++;
btorf("%d uext %d %d %d %s\n", this_nid, sid, nid, 0, log_id(wire));
btorf_pop(stringf("wire %s", log_id(wire)));
continue;
}
while (!ff_todo.empty())
{
vector<pair<int, Cell*>> todo;