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LibertyPort::clockTreePathDelays() 

Signed-off-by: James Cherry <cherry@parallaxsw.com>
This commit is contained in:
James Cherry 2023-10-04 15:39:42 -07:00
parent 76d6dd1dae
commit f8fc314a03
2 changed files with 28 additions and 0 deletions
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1
include/sta/Liberty.hh
View File

@ -794,6 +794,7 @@ public:
DriverWaveform *driverWaveform(const RiseFall *rf) const;
void setDriverWaveform(DriverWaveform *driver_waveform,
const RiseFall *rf);
RiseFallMinMax clockTreePathDelays();
static bool equiv(const LibertyPort *port1,
const LibertyPort *port2);

27
liberty/Liberty.cc
View File

@ -2566,6 +2566,33 @@ LibertyPort::setDriverWaveform(DriverWaveform *driver_waveform,
driver_waveform_[rf->index()] = driver_waveform;
}
RiseFallMinMax
LibertyPort::clockTreePathDelays()
{
RiseFallMinMax delays;
const TimingArcSetSeq &arc_sets = liberty_cell_->timingArcSets(nullptr, this);
for (TimingArcSet *arc_set : arc_sets) {
TimingRole *role = arc_set->role();
if (role == TimingRole::clockTreePathMin()
|| role == TimingRole::clockTreePathMax()) {
for (TimingArc *arc : arc_set->arcs()) {
TimingModel *model = arc->model();
GateTimingModel *gate_model = dynamic_cast<GateTimingModel*>(model);
ArcDelay delay;
Slew slew;
gate_model->gateDelay(liberty_cell_, nullptr, 0.0, 0.0, 0.0, false,
delay, slew);
const RiseFall *rf = arc->toEdge()->asRiseFall();
const MinMax *min_max = (role == TimingRole::clockTreePathMin())
? MinMax::min()
: MinMax::max();
delays.setValue(rf, min_max, delay);
}
}
}
return delays;
}
////////////////////////////////////////////////////////////////
LibertyPortSeq