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Sdc::connectPinAfter minimize work if no hpins

This commit is contained in:
James Cherry 2020-11-14 10:34:26 -07:00
parent 7fba8a57ea
commit beeb95d830
3 changed files with 49 additions and 27 deletions
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2
include/sta/Sdc.hh
View File

@ -1034,6 +1034,7 @@ protected:
void deleteMatchingExceptions(ExceptionPath *exception);
void findMatchingExceptions(ExceptionPath *exception,
ExceptionPathSet &matches);
void checkForThruHpins(ExceptionPath *exception);
void findMatchingExceptionsFirstFrom(ExceptionPath *exception,
ExceptionPathSet &matches);
void findMatchingExceptionsFirstThru(ExceptionPath *exception,
@ -1334,6 +1335,7 @@ protected:
PinSet disabled_clk_gating_checks_pin_;
ExceptionPathSet exceptions_;
bool have_thru_hpin_exceptions_;
// First pin/clock/instance/net/edge exception point to exception set map.
PinExceptionsMap *first_from_pin_exceptions_;
ClockExceptionsMap *first_from_clk_exceptions_;

71
sdc/Sdc.cc
View File

@ -96,6 +96,7 @@ Sdc::Sdc(StaState *sta) :
port_cap_map_(nullptr),
net_wire_cap_map_(nullptr),
drvr_pin_wire_cap_map_(nullptr),
have_thru_hpin_exceptions_(false),
first_from_pin_exceptions_(nullptr),
first_from_clk_exceptions_(nullptr),
first_from_inst_exceptions_(nullptr),
@ -4717,6 +4718,21 @@ Sdc::recordException(ExceptionPath *exception)
exceptions_.insert(exception);
recordMergeHashes(exception);
recordExceptionFirstPts(exception);
checkForThruHpins(exception);
}
void
Sdc::checkForThruHpins(ExceptionPath *exception)
{
ExceptionThruSeq *thrus = exception->thrus();
if (thrus) {
for (ExceptionThru *thru : *thrus) {
if (thru->edges()) {
have_thru_hpin_exceptions_ = true;
break;
}
}
}
}
void
@ -5016,6 +5032,7 @@ Sdc::deleteExceptions()
deleteExceptionPtHashMapSets(exception_merge_hash_);
exception_merge_hash_.clear();
have_thru_hpin_exceptions_ = false;
}
void
@ -5954,19 +5971,21 @@ Sdc::setUseDefaultArrivalClock(bool enable)
void
Sdc::connectPinAfter(Pin *pin)
{
PinSet *drvrs = network_->drivers(pin);
ExceptionPathSet::Iterator except_iter(exceptions_);
while (except_iter.hasNext()) {
ExceptionPath *exception = except_iter.next();
ExceptionPt *first_pt = exception->firstPt();
ExceptionThruSeq::Iterator thru_iter(exception->thrus());
while (thru_iter.hasNext()) {
ExceptionThru *thru = thru_iter.next();
if (thru->edges()) {
thru->connectPinAfter(drvrs, network_);
if (first_pt == thru)
recordExceptionEdges(exception, thru->edges(),
first_thru_edge_exceptions_);
if (have_thru_hpin_exceptions_) {
PinSet *drvrs = network_->drivers(pin);
ExceptionPathSet::Iterator except_iter(exceptions_);
while (except_iter.hasNext()) {
ExceptionPath *exception = except_iter.next();
ExceptionPt *first_pt = exception->firstPt();
ExceptionThruSeq::Iterator thru_iter(exception->thrus());
while (thru_iter.hasNext()) {
ExceptionThru *thru = thru_iter.next();
if (thru->edges()) {
thru->connectPinAfter(drvrs, network_);
if (first_pt == thru)
recordExceptionEdges(exception, thru->edges(),
first_thru_edge_exceptions_);
}
}
}
}
@ -5975,18 +5994,20 @@ Sdc::connectPinAfter(Pin *pin)
void
Sdc::disconnectPinBefore(Pin *pin)
{
ExceptionPathSet::Iterator except_iter(exceptions_);
while (except_iter.hasNext()) {
ExceptionPath *exception = except_iter.next();
ExceptionPt *first_pt = exception->firstPt();
ExceptionThruSeq::Iterator thru_iter(exception->thrus());
while (thru_iter.hasNext()) {
ExceptionThru *thru = thru_iter.next();
if (thru->edges()) {
thru->disconnectPinBefore(pin, network_);
if (thru == first_pt)
recordExceptionEdges(exception, thru->edges(),
first_thru_edge_exceptions_);
if (have_thru_hpin_exceptions_) {
ExceptionPathSet::Iterator except_iter(exceptions_);
while (except_iter.hasNext()) {
ExceptionPath *exception = except_iter.next();
ExceptionPt *first_pt = exception->firstPt();
ExceptionThruSeq::Iterator thru_iter(exception->thrus());
while (thru_iter.hasNext()) {
ExceptionThru *thru = thru_iter.next();
if (thru->edges()) {
thru->disconnectPinBefore(pin, network_);
if (thru == first_pt)
recordExceptionEdges(exception, thru->edges(),
first_thru_edge_exceptions_);
}
}
}
}

3
search/Sim.cc
View File

@ -688,9 +688,8 @@ Sim::deletePinBefore(Pin *pin)
void
Sim::connectPinAfter(Pin *pin)
{
// Incrementally update const_func_pins_.
recordConstPinFunc(pin);
if (incremental_) {
recordConstPinFunc(pin);
if (network_->isLoad(pin))
invalid_load_pins_.insert(pin);
if (network_->isDriver(pin))