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abc9_ops: add 'dff' label for auto handling of (* abc9_flop *) boxes

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This commit is contained in:
Eddie Hung 2020-04-13 09:38:07 -07:00
parent accfc70fc2
commit 95763c8d18
9 changed files with 403 additions and 640 deletions
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10
backends/aiger/xaiger.cc
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@ -616,7 +616,6 @@ struct XAigerWriter
dict<SigBit, int> clk_to_mergeability;
bool nonzero_warned = false;
for (const auto &i : ff_bits) {
const SigBit &d = i.first;
const Cell *cell = i.second;
@ -633,15 +632,10 @@ struct XAigerWriter
write_r_buffer(mergeability);
else log_abort();
Const init = cell->attributes.at(ID::abc9_init, State::Sx);
Const init = cell->attributes.at(ID::abc9_init);
log_assert(GetSize(init) == 1);
if (init == State::S1) {
if (!nonzero_warned) {
log_warning("Module '%s' contains $_DFF_[NP]_ cell with non-zero initial state -- unsupported by ABC9.\n", log_id(module));
nonzero_warned = true;
}
if (init == State::S1)
write_s_buffer(1);
}
else if (init == State::S0)
write_s_buffer(0);
else {