SimpleRCDelayCalc -> SlewDegradeDelayCalc

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

CMakeLists.txt

@@ -73,7 +73,7 @@ set(STA_SOURCE
   dcalc/LumpedCapDelayCalc.cc
   dcalc/NetCaps.cc
   dcalc/RCDelayCalc.cc
-  dcalc/SimpleRCDelayCalc.cc
+  dcalc/SlewDegradeDelayCalc.cc
   dcalc/UnitDelayCalc.cc
   
   graph/DelayFloat.cc

dcalc/DelayCalc.cc

@@ -20,7 +20,7 @@
 #include "StringUtil.hh"
 #include "UnitDelayCalc.hh"
 #include "LumpedCapDelayCalc.hh"
-#include "SimpleRCDelayCalc.hh"
+#include "SlewDegradeDelayCalc.hh"
 #include "DmpDelayCalc.hh"
 #include "ArnoldiDelayCalc.hh"
 
@@ -35,7 +35,7 @@ registerDelayCalcs()
 {
   registerDelayCalc("unit", makeUnitDelayCalc);
   registerDelayCalc("lumped_cap", makeLumpedCapDelayCalc);
-  registerDelayCalc("simple_rc", makeSimpleRCDelayCalc);
+  registerDelayCalc("slew_degrade", makeSlewDegradeDelayCalc);
   registerDelayCalc("dmp_ceff_elmore", makeDmpCeffElmoreDelayCalc);
   registerDelayCalc("dmp_ceff_two_pole", makeDmpCeffTwoPoleDelayCalc);
   registerDelayCalc("arnoldi", makeArnoldiDelayCalc);

dcalc/SimpleRCDelayCalc.hh

@@ -1,63 +0,0 @@
-// OpenSTA, Static Timing Analyzer
-// Copyright (c) 2023, Parallax Software, Inc.
-// 
-// This program is free software: you can redistribute it and/or modify
-// it under the terms of the GNU General Public License as published by
-// the Free Software Foundation, either version 3 of the License, or
-// (at your option) any later version.
-// 
-// This program is distributed in the hope that it will be useful,
-// but WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-// GNU General Public License for more details.
-// 
-// You should have received a copy of the GNU General Public License
-// along with this program. If not, see <https://www.gnu.org/licenses/>.
-
-#pragma once
-
-#include "RCDelayCalc.hh"
-
-namespace sta {
-
-// Liberty table model lumped capacitance arc delay calculator.
-// Effective capacitance is the pi model total capacitance (C1+C2).
-// Wire delays are elmore delays.
-// Driver slews are degraded to loads by rise/fall transition_degradation
-// tables.
-class SimpleRCDelayCalc : public RCDelayCalc
-{
-public:
-  SimpleRCDelayCalc(StaState *sta);
-  virtual ArcDelayCalc *copy();
-  virtual void inputPortDelay(const Pin *port_pin,
-			      float in_slew,
-			      const RiseFall *rf,
-			      const Parasitic *parasitic,
-			      const DcalcAnalysisPt *dcalc_ap);
-  virtual void gateDelay(const LibertyCell *drvr_cell,
-			 const TimingArc *arc,
-			 const Slew &in_slew,
-			 float load_cap,
-			 const Parasitic *drvr_parasitic,
-			 float related_out_cap,
-			 const Pvt *pvt,
-			 const DcalcAnalysisPt *dcalc_ap,
-			 // Return values.
-			 ArcDelay &gate_delay,
-			 Slew &drvr_slew);
-  virtual void loadDelay(const Pin *load_pin,
-			 ArcDelay &wire_delay,
-			 Slew &load_slew);
-
-  using RCDelayCalc::gateDelay;
-  using RCDelayCalc::reportGateDelay;
-
-private:
-  const Pvt *pvt_;
-};
-
-ArcDelayCalc *
-makeSimpleRCDelayCalc(StaState *sta);
-
-} // namespace

dcalc/SlewDegradeDelayCalc.cc

@@ -14,7 +14,7 @@
 // You should have received a copy of the GNU General Public License
 // along with this program. If not, see <https://www.gnu.org/licenses/>.
 
-#include "SimpleRCDelayCalc.hh"
+#include "SlewDegradeDelayCalc.hh"
 
 #include "TimingArc.hh"
 #include "Liberty.hh"
@@ -25,46 +25,83 @@
 
 namespace sta {
 
-ArcDelayCalc *
-makeSimpleRCDelayCalc(StaState *sta)
+// Liberty table model lumped capacitance arc delay calculator.
+// Effective capacitance is the pi model total capacitance (C1+C2).
+// Wire delays are elmore delays.
+// Driver slews are degraded to loads by rise/fall transition_degradation
+// tables.
+class SlewDegradeDelayCalc : public RCDelayCalc
 {
-  return new SimpleRCDelayCalc(sta);
+public:
+  SlewDegradeDelayCalc(StaState *sta);
+  virtual ArcDelayCalc *copy();
+  virtual void inputPortDelay(const Pin *port_pin,
+			      float in_slew,
+			      const RiseFall *rf,
+			      const Parasitic *parasitic,
+			      const DcalcAnalysisPt *dcalc_ap);
+  virtual void gateDelay(const LibertyCell *drvr_cell,
+			 const TimingArc *arc,
+			 const Slew &in_slew,
+			 float load_cap,
+			 const Parasitic *drvr_parasitic,
+			 float related_out_cap,
+			 const Pvt *pvt,
+			 const DcalcAnalysisPt *dcalc_ap,
+			 // Return values.
+			 ArcDelay &gate_delay,
+			 Slew &drvr_slew);
+  virtual void loadDelay(const Pin *load_pin,
+			 ArcDelay &wire_delay,
+			 Slew &load_slew);
+
+  using RCDelayCalc::gateDelay;
+  using RCDelayCalc::reportGateDelay;
+
+private:
+  const Pvt *pvt_;
+};
+
+ArcDelayCalc *
+makeSlewDegradeDelayCalc(StaState *sta)
+{
+  return new SlewDegradeDelayCalc(sta);
 }
 
-SimpleRCDelayCalc::SimpleRCDelayCalc(StaState *sta) :
+SlewDegradeDelayCalc::SlewDegradeDelayCalc(StaState *sta) :
   RCDelayCalc(sta)
 {
 }
 
 ArcDelayCalc *
-SimpleRCDelayCalc::copy()
+SlewDegradeDelayCalc::copy()
 {
-  return new SimpleRCDelayCalc(this);
+  return new SlewDegradeDelayCalc(this);
 }
 
 void
-SimpleRCDelayCalc::inputPortDelay(const Pin *port_pin,
-				  float in_slew,
-				  const RiseFall *rf,
-				  const Parasitic *parasitic,
-				  const DcalcAnalysisPt *dcalc_ap)
+SlewDegradeDelayCalc::inputPortDelay(const Pin *port_pin,
+                                     float in_slew,
+                                     const RiseFall *rf,
+                                     const Parasitic *parasitic,
+                                     const DcalcAnalysisPt *dcalc_ap)
 {
   pvt_ = dcalc_ap->operatingConditions();
   RCDelayCalc::inputPortDelay(port_pin, in_slew, rf, parasitic, dcalc_ap);
 }
 
 void
-SimpleRCDelayCalc::gateDelay(const LibertyCell *drvr_cell,
-			     const TimingArc *arc,
-			     const Slew &in_slew,
-			     float load_cap,
-			     const Parasitic *drvr_parasitic,
-			     float related_out_cap,
-			     const Pvt *pvt,
-			     const DcalcAnalysisPt *dcalc_ap,
-			     // Return values.
-			     ArcDelay &gate_delay,
-			     Slew &drvr_slew)
+SlewDegradeDelayCalc::gateDelay(const LibertyCell *drvr_cell,
+                                const TimingArc *arc,
+                                const Slew &in_slew,
+                                float load_cap,
+                                const Parasitic *drvr_parasitic,
+                                float related_out_cap,
+                                const Pvt *pvt,
+                                const DcalcAnalysisPt *dcalc_ap,
+                                // Return values.
+                                ArcDelay &gate_delay,
+                                Slew &drvr_slew)
 {
   input_port_ = false;
   drvr_parasitic_ = drvr_parasitic;
@@ -79,9 +116,9 @@ SimpleRCDelayCalc::gateDelay(const LibertyCell *drvr_cell,
 }
 
 void
-SimpleRCDelayCalc::loadDelay(const Pin *load_pin,
-			     ArcDelay &wire_delay,
-			     Slew &load_slew)
+SlewDegradeDelayCalc::loadDelay(const Pin *load_pin,
+                                ArcDelay &wire_delay,
+                                Slew &load_slew)
 {
   ArcDelay wire_delay1 = 0.0;
   Slew load_slew1 = drvr_slew_;

dcalc/SlewDegradeDelayCalc.hh

@@ -0,0 +1,26 @@
+// OpenSTA, Static Timing Analyzer
+// Copyright (c) 2023, Parallax Software, Inc.
+// 
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+// 
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+// 
+// You should have received a copy of the GNU General Public License
+// along with this program. If not, see <https://www.gnu.org/licenses/>.
+
+#pragma once
+
+#include "RCDelayCalc.hh"
+
+namespace sta {
+
+ArcDelayCalc *
+makeSlewDegradeDelayCalc(StaState *sta);
+
+} // namespace

include/sta/ArcDelayCalc.hh

@@ -36,7 +36,7 @@ class DcalcAnalysisPt;
 //   UnitDelayCalc
 //   LumpedCapDelayCalc
 //    RCDelayCalc
-//     SimpleRCDelayCalc
+//     SlewDegradeDelayCalc
 //     DmpCeffDelayCalc
 //      DmpCeffElmoreDelayCalc
 //      DmpCeffTwoPoleDelayCalc