New switch in 'read_lib' to replace gate/pin names by short strings.

src/map/scl/scl.c

@@ -139,11 +139,12 @@ int Scl_CommandReadLib( Abc_Frame_t * pAbc, int argc, char ** argv )
     float Slew = 0;
     float Gain = 0;
     int nGatesMin = 0;
+    int fShortNames = 0;
     int fVerbose = 1;
     int fVeryVerbose = 0;
 
     Extra_UtilGetoptReset();
-    while ( ( c = Extra_UtilGetopt( argc, argv, "SGMdvwh" ) ) != EOF )
+    while ( ( c = Extra_UtilGetopt( argc, argv, "SGMdnvwh" ) ) != EOF )
     {
         switch ( c )
         {
@@ -183,6 +184,9 @@ int Scl_CommandReadLib( Abc_Frame_t * pAbc, int argc, char ** argv )
         case 'd':
             fDump ^= 1;
             break;
+        case 'n':
+            fShortNames ^= 1;
+            break;
         case 'v':
             fVerbose ^= 1;
             break;
@@ -219,6 +223,9 @@ int Scl_CommandReadLib( Abc_Frame_t * pAbc, int argc, char ** argv )
         return 0;
     }
     Abc_SclLoad( pLib, (SC_Lib **)&pAbc->pLibScl );
+    // convert the library if needed
+    if ( fShortNames )
+        Abc_SclShortNames( pLib );
     // dump the resulting library
     if ( fDump && pAbc->pLibScl )
         Abc_SclWriteLiberty( Extra_FileNameGenericAppend(pFileName, "_temp.lib"), (SC_Lib *)pAbc->pLibScl );
@@ -228,12 +235,13 @@ int Scl_CommandReadLib( Abc_Frame_t * pAbc, int argc, char ** argv )
     return 0;
 
 usage:
-    fprintf( pAbc->Err, "usage: read_lib [-SG float] [-M num] [-dvwh] <file>\n" );
+    fprintf( pAbc->Err, "usage: read_lib [-SG float] [-M num] [-dnvwh] <file>\n" );
     fprintf( pAbc->Err, "\t           reads Liberty library from file\n" );
     fprintf( pAbc->Err, "\t-S float : the slew parameter used to generate the library [default = %.2f]\n", Slew );
     fprintf( pAbc->Err, "\t-G float : the gain parameter used to generate the library [default = %.2f]\n", Gain );
     fprintf( pAbc->Err, "\t-M num   : skip gate classes whose size is less than this [default = %d]\n", nGatesMin );
     fprintf( pAbc->Err, "\t-d       : toggle dumping the parsed library into file \"*_temp.lib\" [default = %s]\n", fDump? "yes": "no" );
+    fprintf( pAbc->Err, "\t-n       : toggle replacing gate/pin names by short strings [default = %s]\n", fShortNames? "yes": "no" );
     fprintf( pAbc->Err, "\t-v       : toggle writing verbose information [default = %s]\n", fVerbose? "yes": "no" );
     fprintf( pAbc->Err, "\t-v       : toggle writing information about skipped gates [default = %s]\n", fVeryVerbose? "yes": "no" );
     fprintf( pAbc->Err, "\t-h       : prints the command summary\n" );

src/map/scl/sclLib.h

@@ -615,6 +615,7 @@ extern void          Abc_SclWriteLiberty( char * pFileName, SC_Lib * p );
 extern void          Abc_SclHashCells( SC_Lib * p );
 extern int           Abc_SclCellFind( SC_Lib * p, char * pName );
 extern int           Abc_SclClassCellNum( SC_Cell * pClass );
+extern void          Abc_SclShortNames( SC_Lib * p );
 extern int           Abc_SclLibClassNum( SC_Lib * pLib );
 extern void          Abc_SclLinkCells( SC_Lib * p );
 extern void          Abc_SclPrintCells( SC_Lib * p, float Slew, float Gain, int fInvOnly, int fShort );

src/map/scl/sclLibUtil.c

@@ -101,6 +101,100 @@ int Abc_SclLibClassNum( SC_Lib * pLib )
 
 /**Function*************************************************************
 
+  Synopsis    [Change cell names and pin names.]
+
+  Description []
+               
+  SideEffects []
+
+  SeeAlso     []
+
+***********************************************************************/
+static inline int Abc_SclIsChar( char c )
+{
+    return (c >= 'a' && c <= 'z') || (c >= 'A' && c <= 'Z') || c == '_';
+}
+static inline int Abc_SclIsName( char c )
+{
+    return Abc_SclIsChar(c) || (c >= '0' && c <= '9');
+}
+static inline char * Abc_SclFindLimit( char * pName )
+{
+    assert( Abc_SclIsChar(*pName) );
+    while ( Abc_SclIsName(*pName) )
+        pName++;
+    return pName;
+}
+static inline int Abc_SclAreEqual( char * pBase, char * pName, char * pLimit )
+{
+    return !strncmp( pBase, pName, pLimit - pName );
+}
+void Abc_SclShortFormula( SC_Cell * pCell, char * pForm, char * pBuffer )
+{
+    SC_Pin * pPin; int i;
+    char * pTemp, * pLimit;
+    for ( pTemp = pForm; *pTemp; )
+    {
+        if ( !Abc_SclIsChar(*pTemp) )
+        {
+            *pBuffer++ = *pTemp++;
+            continue;
+        }
+        pLimit = Abc_SclFindLimit( pTemp );
+        SC_CellForEachPinIn( pCell, pPin, i )
+            if ( Abc_SclAreEqual( pPin->pName, pTemp, pLimit ) )
+            {
+                *pBuffer++ = 'a' + i;
+                break;
+            }
+        assert( i < pCell->n_inputs );
+        pTemp = pLimit;
+    }
+    *pBuffer++ = 0;
+}
+void Abc_SclShortNames( SC_Lib * p )
+{
+    char Buffer[10000];
+    SC_Cell * pClass, * pCell; SC_Pin * pPin;
+    int i, k, n, nClasses = Abc_SclLibClassNum(p);
+    int nDigits = Abc_Base10Log( nClasses );
+    // itereate through classes
+    SC_LibForEachCellClass( p, pClass, i )
+    {
+        int nDigits2 = Abc_Base10Log( Abc_SclClassCellNum(pClass) );
+        SC_RingForEachCell( pClass, pCell, k )
+        {
+            ABC_FREE( pCell->pName );
+            sprintf( Buffer, "g%0*d_%0*d", nDigits, i, nDigits2, k );
+            pCell->pName = Abc_UtilStrsav( Buffer );
+            // formula
+            SC_CellForEachPinOut( pCell, pPin, n )
+            {
+                Abc_SclShortFormula( pCell, pPin->func_text, Buffer );
+                ABC_FREE( pPin->func_text );
+                pPin->func_text = Abc_UtilStrsav( Buffer );
+            }
+            // pin names
+            SC_CellForEachPinIn( pCell, pPin, n )
+            {
+                ABC_FREE( pPin->pName );
+                sprintf( Buffer, "%c", 'a'+n );
+                pPin->pName = Abc_UtilStrsav( Buffer );
+            }
+            SC_CellForEachPinOut( pCell, pPin, n )
+            {
+                ABC_FREE( pPin->pName );
+                sprintf( Buffer, "%c", 'z'-n+pCell->n_inputs );
+                pPin->pName = Abc_UtilStrsav( Buffer );
+            }
+        }
+    }
+    p->nBins = 0;
+    ABC_FREE( p->pBins );
+    Abc_SclHashCells( p );
+}
+/**Function*************************************************************
+
   Synopsis    [Links equal gates into rings while sorting them by area.]
 
   Description []