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Fix handling of zero-length cell connections in SMT2 back-end 

Signed-off-by: Clifford Wolf <clifford@clifford.at>
This commit is contained in:
Clifford Wolf 2018-02-08 19:12:12 +01:00
parent 0659d9eac7
commit c9672e2e2e
1 changed files with 8 additions and 0 deletions
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8
backends/smt2/smt2.cc
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@ -112,6 +112,8 @@ struct Smt2Worker
for (auto cell : module->cells())
for (auto &conn : cell->connections()) {
if (GetSize(conn.second) == 0)
continue;
bool is_input = ct.cell_input(cell->type, conn.first);
bool is_output = ct.cell_output(cell->type, conn.first);
if (is_output && !is_input)
@ -659,6 +661,9 @@ struct Smt2Worker
for (auto &conn : cell->connections())
{
if (GetSize(conn.second) == 0)
continue;
Wire *w = m->wire(conn.first);
SigSpec sig = sigmap(conn.second);
@ -829,6 +834,9 @@ struct Smt2Worker
for (auto &conn : cell->connections())
{
if (GetSize(conn.second) == 0)
continue;
Wire *w = m->wire(conn.first);
SigSpec sig = sigmap(conn.second);