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clearLogicConstants()

This commit is contained in:
James Cherry 2021-06-21 18:35:34 -07:00
parent 2451c897da
commit 370b4787aa
3 changed files with 11 additions and 0 deletions
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3
include/sta/Sta.hh
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@ -1052,6 +1052,9 @@ public:
// Propagate liberty constant functions and pins tied high/low through // Propagate liberty constant functions and pins tied high/low through
// combinational logic and registers. // combinational logic and registers.
void findLogicConstants(); void findLogicConstants();
// Clear the constants found by findLogicConstants so they do not interfere
// with normal constant propagate for timing.
void clearLogicConstants();
// Iterator for instances sorted by max driver pin slew. // Iterator for instances sorted by max driver pin slew.
// Caller owns iterator and iterator->container(). // Caller owns iterator and iterator->container().

1
search/Sim.cc
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@ -569,6 +569,7 @@ Sim::findLogicConstants()
enqueueConstantPinInputs(); enqueueConstantPinInputs();
setConstFuncPins(); setConstFuncPins();
propagateConstants(true); propagateConstants(true);
valid_ = true;
} }
void void

7
search/Sta.cc
View File

@ -3447,9 +3447,16 @@ Sta::simLogicValue(const Pin *pin)
void void
Sta::findLogicConstants() Sta::findLogicConstants()
{ {
ensureGraph();
sim_->findLogicConstants(); sim_->findLogicConstants();
} }
void
Sta::clearLogicConstants()
{
sim_->clear();
}
void void
Sta::setPortExtPinCap(Port *port, Sta::setPortExtPinCap(Port *port,
const RiseFallBoth *rf, const RiseFallBoth *rf,