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Add Verific OPER_SVA_STABLE support

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This commit is contained in:
Clifford Wolf 2017-12-10 00:59:44 +01:00
parent 27916105a9
commit e4a4c0e10c
1 changed files with 32 additions and 2 deletions
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34
frontends/verific/verific.cc
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@ -1140,6 +1140,34 @@ struct VerificImporter
if (inst->Type() == PRIM_SVA_COVER) if (inst->Type() == PRIM_SVA_COVER)
sva_covers.insert(inst); sva_covers.insert(inst);
if (inst->Type() == OPER_SVA_STABLE && !mode_nosva)
{
VerificClockEdge clock_edge(this, inst->GetInput2Bit(0)->Driver());
log_assert(inst->Input1Size() == inst->OutputSize());
SigSpec sig_d, sig_q, sig_o;
sig_q = module->addWire(NEW_ID, inst->Input1Size());
for (int i = int(inst->Input1Size())-1; i >= 0; i--){
sig_d.append(net_map_at(inst->GetInput1Bit(i)));
sig_o.append(net_map_at(inst->GetOutputBit(i)));
}
if (verbose) {
log(" %sedge FF with D=%s, Q=%s, C=%s.\n", clock_edge.posedge ? "pos" : "neg",
log_signal(sig_d), log_signal(sig_q), log_signal(clock_edge.clock_sig));
log(" XNOR with A=%s, B=%s, Y=%s.\n",
log_signal(sig_d), log_signal(sig_q), log_signal(sig_o));
}
module->addDff(NEW_ID, clock_edge.clock_sig, sig_d, sig_q, clock_edge.posedge);
module->addXnor(NEW_ID, sig_d, sig_q, sig_o);
if (!mode_keep)
continue;
}
if (inst->Type() == PRIM_SVA_PAST && !mode_nosva) if (inst->Type() == PRIM_SVA_PAST && !mode_nosva)
{ {
VerificClockEdge clock_edge(this, inst->GetInput2()->Driver()); VerificClockEdge clock_edge(this, inst->GetInput2()->Driver());
@ -1284,7 +1312,8 @@ struct VerificSvaPP
if (!verific_sva_prims.count(inst->Type())) if (!verific_sva_prims.count(inst->Type()))
return nullptr; return nullptr;
if (inst->Type() == PRIM_SVA_PAST) if (inst->Type() == PRIM_SVA_ROSE || inst->Type() == PRIM_SVA_FELL ||
inst->Type() == PRIM_SVA_STABLE || inst->Type() == OPER_SVA_STABLE || inst->Type() == PRIM_SVA_PAST)
return nullptr; return nullptr;
return inst; return inst;
@ -1405,7 +1434,8 @@ struct VerificSvaImporter
if (!verific_sva_prims.count(inst->Type())) if (!verific_sva_prims.count(inst->Type()))
return nullptr; return nullptr;
if (inst->Type() == PRIM_SVA_PAST) if (inst->Type() == PRIM_SVA_ROSE || inst->Type() == PRIM_SVA_FELL ||
inst->Type() == PRIM_SVA_STABLE || inst->Type() == OPER_SVA_STABLE || inst->Type() == PRIM_SVA_PAST)
return nullptr; return nullptr;
return inst; return inst;