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async2sync: Support all FF types.

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This commit is contained in:
Marcelina Kościelnicka 2020-07-24 17:01:26 +02:00
parent af6623ebb8
commit 4a05cad7f8
3 changed files with 204 additions and 141 deletions
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47
passes/sat/clk2fflogic.cc
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@ -186,48 +186,7 @@ struct Clk2fflogicPass : public Pass {
initvals.set_init(past_q, ff.val_init);
if (ff.has_clk) {
SigSpec sig_d = ff.sig_d;
if (ff.has_srst && ff.has_en && ff.ce_over_srst) {
if (!ff.is_fine) {
if (ff.pol_srst)
sig_d = module->Mux(NEW_ID, sig_d, ff.val_srst, ff.sig_srst);
else
sig_d = module->Mux(NEW_ID, ff.val_srst, sig_d, ff.sig_srst);
} else {
if (ff.pol_srst)
sig_d = module->MuxGate(NEW_ID, sig_d, ff.val_srst[0], ff.sig_srst);
else
sig_d = module->MuxGate(NEW_ID, ff.val_srst[0], sig_d, ff.sig_srst);
}
}
if (ff.has_en) {
if (!ff.is_fine) {
if (ff.pol_en)
sig_d = module->Mux(NEW_ID, ff.sig_q, sig_d, ff.sig_en);
else
sig_d = module->Mux(NEW_ID, sig_d, ff.sig_q, ff.sig_en);
} else {
if (ff.pol_en)
sig_d = module->MuxGate(NEW_ID, ff.sig_q, sig_d, ff.sig_en);
else
sig_d = module->MuxGate(NEW_ID, sig_d, ff.sig_q, ff.sig_en);
}
}
if (ff.has_srst && !(ff.has_en && ff.ce_over_srst)) {
if (!ff.is_fine) {
if (ff.pol_srst)
sig_d = module->Mux(NEW_ID, sig_d, ff.val_srst, ff.sig_srst);
else
sig_d = module->Mux(NEW_ID, ff.val_srst, sig_d, ff.sig_srst);
} else {
if (ff.pol_srst)
sig_d = module->MuxGate(NEW_ID, sig_d, ff.val_srst[0], ff.sig_srst);
else
sig_d = module->MuxGate(NEW_ID, ff.val_srst[0], sig_d, ff.sig_srst);
}
}
ff.unmap_ce_srst(module);
Wire *past_clk = module->addWire(NEW_ID);
initvals.set_init(past_clk, ff.pol_clk ? State::S1 : State::S0);
@ -255,9 +214,9 @@ struct Clk2fflogicPass : public Pass {
Wire *past_d = module->addWire(NEW_ID, ff.width);
if (!ff.is_fine)
module->addFf(NEW_ID, sig_d, past_d);
module->addFf(NEW_ID, ff.sig_d, past_d);
else
module->addFfGate(NEW_ID, sig_d, past_d);
module->addFfGate(NEW_ID, ff.sig_d, past_d);
if (!ff.val_init.is_fully_undef())
initvals.set_init(past_d, ff.val_init);