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proc_dff: Fix emitted FF when a register is not assigned in async reset

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Fixes #2619.
This commit is contained in:
Marcelina Kościelnicka 2021-03-06 03:59:03 +01:00
parent bc717abad2
commit 760284033d
2 changed files with 27 additions and 0 deletions
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4
passes/proc/proc_dff.cc
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@ -328,6 +328,10 @@ void proc_dff(RTLIL::Module *mod, RTLIL::Process *proc, ConstEval &ce)
ce.assign_map.apply(sig);
if (rstval == sig) {
if (sync_level->type == RTLIL::SyncType::ST1)
insig = mod->Mux(NEW_ID, insig, sig, sync_level->signal);
else
insig = mod->Mux(NEW_ID, sig, insig, sync_level->signal);
rstval = RTLIL::SigSpec(RTLIL::State::Sz, sig.size());
sync_level = NULL;
}