luke
/
OpenSTA
mirror of https://github.com/The-OpenROAD-Project/OpenSTA.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

min pulse width lib/sdf resolves #255 

Signed-off-by: James Cherry <cherry@parallaxsw.com>
This commit is contained in:
James Cherry 2025-06-06 20:36:59 -07:00
parent f2a94a6ffa
commit 343b93b633
3 changed files with 12 additions and 7 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
liberty/LibertyBuilder.cc
View File

@ -692,10 +692,10 @@ LibertyBuilder::makeMinPulseWidthArcs(LibertyCell *cell,
from_port = to_port; from_port = to_port;
TimingArcSet *arc_set = makeTimingArcSet(cell, from_port, to_port, related_out, TimingArcSet *arc_set = makeTimingArcSet(cell, from_port, to_port, related_out,
role, attrs); role, attrs);
for (auto to_rf : RiseFall::range()) { for (const RiseFall *from_rf : RiseFall::range()) {
TimingModel *model = attrs->model(to_rf); TimingModel *model = attrs->model(from_rf);
if (model) if (model)
makeTimingArc(arc_set, to_rf->opposite(), to_rf, model); makeTimingArc(arc_set, from_rf, from_rf->opposite(), model);
} }
return arc_set; return arc_set;
} }

4
liberty/LibertyReader.cc
View File

@ -2027,8 +2027,8 @@ LibertyReader::makeMinPulseWidthArcs(LibertyPort *port,
attrs = make_shared<TimingArcAttrs>(); attrs = make_shared<TimingArcAttrs>();
attrs->setTimingType(TimingType::min_pulse_width); attrs->setTimingType(TimingType::min_pulse_width);
} }
// rise/fall_constraint model is on the trailing edge of the pulse. // rise/fall_constraint model is on the leading edge of the pulse.
const RiseFall *model_rf = hi_low->opposite(); const RiseFall *model_rf = hi_low;
TimingModel *check_model = TimingModel *check_model =
makeScalarCheckModel(min_width, ScaleFactorType::min_pulse_width, model_rf); makeScalarCheckModel(min_width, ScaleFactorType::min_pulse_width, model_rf);
attrs->setModel(model_rf, check_model); attrs->setModel(model_rf, check_model);

9
liberty/LibertyWriter.cc
View File

@ -426,8 +426,13 @@ LibertyWriter::writeTimingArcSet(const TimingArcSet *arc_set)
for (const RiseFall *rf : RiseFall::range()) { for (const RiseFall *rf : RiseFall::range()) {
TimingArc *arc = arc_set->arcTo(rf); TimingArc *arc = arc_set->arcTo(rf);
if (arc) if (arc) {
writeTimingModels(arc, rf); // Min pulse width arcs are wrt to the leading edge of the pulse.
const RiseFall *model_rf = (arc_set->role() == TimingRole::width())
? rf->opposite()
: rf;
writeTimingModels(arc, model_rf);
}
} }
fprintf(stream_, " }\n"); fprintf(stream_, " }\n");