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btor: add support for $pos cell

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This commit is contained in:
Kevin Läufer 2022-06-20 16:39:53 -07:00
parent 34804f3fb6
commit de5c4bf523
1 changed files with 11 additions and 8 deletions
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19
backends/btor/btor.cc
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@ -446,25 +446,28 @@ struct BtorWorker
goto okay; goto okay;
} }
if (cell->type.in(ID($not), ID($neg), ID($_NOT_))) if (cell->type.in(ID($not), ID($neg), ID($_NOT_), ID($pos)))
{ {
string btor_op; string btor_op;
if (cell->type.in(ID($not), ID($_NOT_))) btor_op = "not"; if (cell->type.in(ID($not), ID($_NOT_))) btor_op = "not";
if (cell->type == ID($neg)) btor_op = "neg"; if (cell->type == ID($neg)) btor_op = "neg";
log_assert(!btor_op.empty());
int width = std::max(GetSize(cell->getPort(ID::A)), GetSize(cell->getPort(ID::Y))); int width = std::max(GetSize(cell->getPort(ID::A)), GetSize(cell->getPort(ID::Y)));
bool a_signed = cell->hasParam(ID::A_SIGNED) ? cell->getParam(ID::A_SIGNED).as_bool() : false; bool a_signed = cell->hasParam(ID::A_SIGNED) ? cell->getParam(ID::A_SIGNED).as_bool() : false;
int sid = get_bv_sid(width);
int nid_a = get_sig_nid(cell->getPort(ID::A), width, a_signed); int nid_a = get_sig_nid(cell->getPort(ID::A), width, a_signed);
int nid = next_nid++;
btorf("%d %s %d %d%s\n", nid, btor_op.c_str(), sid, nid_a, getinfo(cell).c_str());
SigSpec sig = sigmap(cell->getPort(ID::Y)); SigSpec sig = sigmap(cell->getPort(ID::Y));
// the $pos cell just passes through, all other cells need an actual operation applied
int nid = nid_a;
if (cell->type != ID($pos))
{
log_assert(!btor_op.empty());
int sid = get_bv_sid(width);
nid = next_nid++;
btorf("%d %s %d %d%s\n", nid, btor_op.c_str(), sid, nid_a, getinfo(cell).c_str());
}
if (GetSize(sig) < width) { if (GetSize(sig) < width) {
int sid = get_bv_sid(GetSize(sig)); int sid = get_bv_sid(GetSize(sig));
int nid2 = next_nid++; int nid2 = next_nid++;