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Add support for Verific PRIM_SVA_NOT properties

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This commit is contained in:
Clifford Wolf 2017-12-10 01:10:03 +01:00
parent e4a4c0e10c
commit ba90e08398
1 changed files with 25 additions and 10 deletions
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35
frontends/verific/verific.cc
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@ -1325,10 +1325,16 @@ struct VerificSvaPP
Instance *get_ast_input3(Instance *inst) { return net_to_ast_driver(inst->GetInput3()); }
Instance *get_ast_control(Instance *inst) { return net_to_ast_driver(inst->GetControl()); }
Net *rewrite(Instance *inst)
Net *rewrite_input(Instance *inst) { return rewrite(get_ast_input(inst), inst->GetInput()); }
Net *rewrite_input1(Instance *inst) { return rewrite(get_ast_input1(inst), inst->GetInput1()); }
Net *rewrite_input2(Instance *inst) { return rewrite(get_ast_input2(inst), inst->GetInput2()); }
Net *rewrite_input3(Instance *inst) { return rewrite(get_ast_input3(inst), inst->GetInput3()); }
Net *rewrite_control(Instance *inst) { return rewrite(get_ast_control(inst), inst->GetControl()); }
Net *rewrite(Instance *inst, Net *default_net = nullptr)
{
if (inst == nullptr)
return nullptr;
return default_net;
if (inst->Type() == PRIM_SVA_ASSERT || inst->Type() == PRIM_SVA_COVER || inst->Type() == PRIM_SVA_ASSUME) {
Net *new_net = rewrite(get_ast_input(inst));
@ -1336,7 +1342,7 @@ struct VerificSvaPP
inst->Disconnect(inst->View()->GetInput());
inst->Connect(inst->View()->GetInput(), new_net);
}
return nullptr;
return default_net;
}
if (inst->Type() == PRIM_SVA_AT) {
@ -1345,23 +1351,32 @@ struct VerificSvaPP
inst->Disconnect(inst->View()->GetInput2());
inst->Connect(inst->View()->GetInput2(), new_net);
}
return nullptr;
return default_net;
}
if (inst->Type() == PRIM_SVA_NON_OVERLAPPED_IMPLICATION)
{
if (mode_cover) {
did_something = true;
Net *new_in1 = rewrite(get_ast_input1(inst));
Net *new_in2 = rewrite(get_ast_input2(inst));
if (!new_in1) new_in1 = inst->GetInput1();
if (!new_in2) new_in1 = inst->GetInput2();
Net *new_in1 = rewrite_input1(inst);
Net *new_in2 = rewrite_input2(inst);
return netlist->SvaBinary(PRIM_SVA_SEQ_CONCAT, new_in1, new_in2, inst->Linefile());
}
return nullptr;
return default_net;
}
return nullptr;
if (inst->Type() == PRIM_SVA_NOT)
{
if (mode_assert || mode_assume) {
did_something = true;
Net *new_in = rewrite_input(inst);
Net *net_zero = netlist->Gnd(inst->Linefile());
return netlist->SvaBinary(PRIM_SVA_OVERLAPPED_IMPLICATION, new_in, net_zero, inst->Linefile());
}
return default_net;
}
return default_net;
}
void run()