sdc:isConstrained for clk latency pin

Signed-off-by: James Cherry <cherry@parallaxsw.com>

include/sta/Sdc.hh

@@ -149,7 +149,7 @@ using ExceptionPathPtHash = std::map<size_t, ExceptionPathSet>;
 using ClockLatencies = std::set<ClockLatency*, ClockLatencyLess>;
 using EdgeClockLatencyMap = std::map<PinPair, ClockLatency*, PinPairLess>;
 using PinClockUncertaintyMap = std::map<const Pin*, ClockUncertainties*>;
-using InterClockUncertaintySet = std::set<InterClockUncertainty*, InterClockUncertaintyLess>;
+using InterClockUncertaintySet=std::set<InterClockUncertainty*,InterClockUncertaintyLess>;
 using ClockGatingCheckMap = std::map<const Clock*, ClockGatingCheck*>;
 using InstanceClockGatingCheckMap = std::map<const Instance*, ClockGatingCheck*>;
 using PinClockGatingCheckMap = std::map<const Pin*, ClockGatingCheck*>;
@@ -1306,6 +1306,7 @@ protected:
   bool clk_hpin_disables_valid_;
   PinSet propagated_clk_pins_;
   ClockLatencies clk_latencies_;
+  PinSet clk_latency_pins_;
   EdgeClockLatencyMap edge_clk_latency_map_;
   ClockInsertions clk_insertions_;
   PinClockUncertaintyMap pin_clk_uncertainty_map_;

sdc/Sdc.cc

@@ -101,6 +101,7 @@ Sdc::Sdc(Mode *mode,
   clk_hpin_disables_(network_),
   propagated_clk_pins_(network_),
   clk_latencies_(network_),
+  clk_latency_pins_(network_),
   edge_clk_latency_map_(network_),
   clk_insertions_(network_),
   clk_sense_map_(network_),
@@ -169,6 +170,7 @@ Sdc::clear()
   clock_pin_map_.clear();
   clock_leaf_pin_map_.clear();
   clk_latencies_.clear();
+  clk_latency_pins_.clear();
   edge_clk_latency_map_.clear();
   clk_insertions_.clear();
 
@@ -1508,6 +1510,8 @@ Sdc::setClockLatency(Clock *clk,
     }
   }
   latency->setDelay(rf, min_max, delay);
+  if (pin)
+    clk_latency_pins_.insert(pin);
 
   // set_clock_latency removes set_propagated_clock on the same object.
   if (clk && pin == nullptr)
@@ -1580,8 +1584,7 @@ Sdc::deleteClockLatenciesReferencing(Clock *clk)
 bool
 Sdc::hasClockLatency(const Pin *pin) const
 {
-  ClockLatency probe(nullptr, pin);
+  return clk_latency_pins_.contains(pin);
-  return clk_latencies_.contains(&probe);
 }
 
 void

sdc/Sdc.i

@@ -1654,6 +1654,14 @@ set_propagate_all_clocks(bool prop)
   Sta::sta()->setPropagateAllClocks(prop);
 }
 
+bool
+pin_is_constrained(const Pin *pin)
+{
+  Sta *sta = Sta::sta();
+  Sdc *sdc = sta->cmdSdc();
+  return sdc->isConstrained(pin);
+}
+
 %} // inline
 
 ////////////////////////////////////////////////////////////////