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dcalc slew tolerance 

Signed-off-by: James Cherry <cherry@parallaxsw.com>
This commit is contained in:
James Cherry 2024-12-15 19:47:17 -08:00
parent 2d11aa9c5e
commit fded1f247d
1 changed files with 10 additions and 4 deletions
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14
dcalc/GraphDelayCalc.cc
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@ -629,7 +629,11 @@ GraphDelayCalc::loadSlewsChanged(DrvrLoadSlews &prev_load_slews,
const SlewSeq load_slews = graph_->slews(load_vertex);
const SlewSeq &prev_slews = prev_load_slews[index];
for (size_t i = 0; i < load_slews.size(); i++) {
if (!delayEqual(load_slews[i], prev_slews[i]))
const Slew &slew = delayAsFloat(load_slews[i]);
const Slew &prev_slew = delayAsFloat(prev_slews[i]);
if ((prev_slew == 0.0 && slew != 0.0)
|| (prev_slew != 0.0
&& abs((slew - prev_slew) / prev_slew) > incremental_delay_tolerance_))
return true;
}
}
@ -874,9 +878,11 @@ GraphDelayCalc::findLatchEdgeDelays(Edge *edge)
sdc_network_->pathName(drvr_inst));
array<bool, RiseFall::index_count> delay_exists = {false, false};
LoadPinIndexMap load_pin_index_map = makeLoadPinIndexMap(drvr_vertex);
findDriverEdgeDelays(drvr_vertex, nullptr, edge,
arc_delay_calc_, load_pin_index_map,
delay_exists);
bool delay_changed = findDriverEdgeDelays(drvr_vertex, nullptr, edge,
arc_delay_calc_, load_pin_index_map,
delay_exists);
if (delay_changed && observer_)
observer_->delayChangedTo(drvr_vertex);
}
bool