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-rw-r--r--frontends/verific/verific.cc1
1 files changed, 1 insertions, 0 deletions
diff --git a/frontends/verific/verific.cc b/frontends/verific/verific.cc
index 284d5db31..d19d837ff 100644
--- a/frontends/verific/verific.cc
+++ b/frontends/verific/verific.cc
@@ -987,6 +987,7 @@ void VerificImporter::merge_past_ffs(pool<RTLIL::Cell*> &candidates)
for (auto cell : candidates)
{
+ if (cell->type != ID($dff)) continue;
SigBit clock = cell->getPort(ID::CLK);
bool clock_pol = cell->getParam(ID::CLK_POLARITY).as_bool();
database[make_pair(clock, int(clock_pol))].insert(cell);