write_sdc -gzip

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

include/sta/Sta.hh

@@ -926,9 +926,9 @@ public:
 		bool leaf,
 		// Replace non-sdc get functions with OpenSTA equivalents.
 		bool native,
-		bool no_timestamp,
-		int digits);
-
+		int digits,
+                bool gzip,
+		bool no_timestamp);
   // The sum of all negative endpoints slacks.
   // Incrementally updated.
   Slack totalNegativeSlack(const MinMax *min_max);

include/sta/WriteSdc.hh

@@ -31,8 +31,9 @@ writeSdc(Instance *instance,
 	 bool map_hpins,
 	 // Replace non-sdc get functions with OpenSTA equivalents.
 	 bool native,
-	 bool no_timestamp,
 	 int digits,
+         bool gzip,
+	 bool no_timestamp,
 	 Sdc *sdc);
 
 } // namespace

sdc/WriteSdcPvt.hh

@@ -31,14 +31,14 @@ public:
 	   bool map_hpins,
 	   bool native,
 	   int digits,
+           bool gzip,
 	   bool no_timestamp,
 	   Sdc *sdc);
   virtual ~WriteSdc();
   void write();
 
-  void openFile(const char *filename);
+  void openFile();
   void closeFile();
-  void flush();
   virtual void writeHeader() const;
   void writeTiming() const;
   void writeDisables() const;
@@ -245,7 +245,7 @@ public:
   void writeVariables() const;
   void writeCmdComment(SdcCmdComment *cmd) const;
 
-  FILE *stream() const { return stream_; }
+  gzFile stream() const { return stream_; }
 
 protected:
   Instance *instance_;
@@ -254,11 +254,12 @@ protected:
   bool map_hpins_;
   bool native_;
   int digits_;
+  bool gzip_;
   bool no_timestamp_;
   bool top_instance_;
   size_t instance_name_length_;
   Cell *cell_;
-  FILE *stream_;
+  gzFile stream_;
 
 private:
   DISALLOW_COPY_AND_ASSIGN(WriteSdc);

search/Sta.cc

@@ -2118,11 +2118,12 @@ void
 Sta::writeSdc(const char *filename,
 	      bool leaf,
 	      bool native,
-	      bool no_timestamp,
-	      int digits)
+	      int digits,
+              bool gzip,
+	      bool no_timestamp)
 {
   sta::writeSdc(network_->topInstance(), filename, "write_sdc",
-		leaf, native, no_timestamp, digits, sdc_);
+		leaf, native, digits, gzip, no_timestamp, sdc_);
 }
 
 ////////////////////////////////////////////////////////////////

tcl/Sdc.tcl

@@ -141,27 +141,25 @@ proc source_ { filename echo verbose } {
 ################################################################
 
 define_cmd_args "write_sdc" \
-  {[-map_hpins] [-no_timestamp] [-digits digits] filename}
+  {[-map_hpins] [-digits digits] [-gzip] [-no_timestamp] filename}
 
 proc write_sdc { args } {
   parse_key_args "write_sdc" args keys {-digits -significant_digits} \
-    flags {-map_hpins -compatible -no_timestamp}
+    flags {-map_hpins -compatible -gzip -no_timestamp}
   check_argc_eq1 "write_sdc" $args
 
   set digits 4
   if { [info exists keys(-digits)] } {
     set digits $keys(-digits)
   }
-  if { [info exists keys(-significant_digits)] } {
-    set digits $keys(-significant_digits)
-  }
   check_positive_integer "-digits" $digits
 
   set filename [file nativename [lindex $args 0]]
+  set gzip [info exists flags(-gzip)]
   set no_timestamp [info exists flags(-no_timestamp)]
   set map_hpins [info exists flags(-map_hpins)]
   set native [expr ![info exists flags(-compatible)]]
-  write_sdc_cmd $filename $map_hpins $native $no_timestamp $digits
+  write_sdc_cmd $filename $map_hpins $native $digits $gzip $no_timestamp
 }
 
 ################################################################

tcl/StaTcl.i

@@ -4918,11 +4918,12 @@ void
 write_sdc_cmd(const char *filename,
 	      bool leaf,
 	      bool compatible,
-	      bool no_timestamp,
-	      int digits)
+	      int digits,
+              bool gzip,
+	      bool no_timestamp)
 {
   cmdLinkedNetwork();
-  Sta::sta()->writeSdc(filename, leaf, compatible, no_timestamp, digits);
+  Sta::sta()->writeSdc(filename, leaf, compatible, digits, gzip, no_timestamp);
 }
 
 void