Several ongoing changes.

src/aig/gia/giaScript.c

@@ -414,7 +414,7 @@ Gia_Man_t * Gia_ManAigSynch2( Gia_Man_t * pInit, void * pPars0, int nLutSize, in
         Gia_ManStop( pTemp );
     }
     // perform balancing
-    if ( Gia_ManBufNum(pGia1) )
+    if ( Gia_ManBufNum(pGia1) || 1 )
         pGia2 = Gia_ManAreaBalance( pGia1, 0, ABC_INFINITY, 0, 0 );
     else
     {

src/base/cba/cba.h

@@ -49,12 +49,11 @@ typedef enum {
     CBA_OBJ_BO,        // 2:  box output
     CBA_OBJ_PI,        // 3:  input
     CBA_OBJ_PO,        // 4:  output
-    CBA_OBJ_PIO,       // 5:  ioput
-    CBA_OBJ_NODE,      // 6:  node
-    CBA_OBJ_BOX,       // 7:  box
-    CBA_OBJ_LATCH,     // 8:  latch
-    CBA_OBJ_CONCAT,    // 9:  concatenation
-    CBA_OBJ_UNKNOWN    // 10: unknown
+    CBA_OBJ_NODE,      // 5:  node
+    CBA_OBJ_BOX,       // 6:  box
+    CBA_OBJ_LATCH,     // 7:  latch
+    CBA_OBJ_CONCAT,    // 8:  concatenation
+    CBA_OBJ_UNKNOWN    // 9:  unknown
 } Cba_ObjType_t; 
 
 // Verilog predefined models
@@ -62,6 +61,8 @@ typedef enum {
     CBA_NODE_NONE = 0, // 0:  unused
     CBA_NODE_C0,       // 1:  constant 0
     CBA_NODE_C1,       // 2:  constant 1
+    CBA_NODE_CX,       // 2:  constant X
+    CBA_NODE_CZ,       // 2:  constant Z
     CBA_NODE_BUF,      // 3:  buffer
     CBA_NODE_INV,      // 4:  inverter
     CBA_NODE_AND,      // 5:  AND
@@ -88,7 +89,6 @@ typedef enum {
     CBA_NODE_PENC,
     CBA_NODE_DEC,
 
-    CBA_NODE_C,
     CBA_NODE_ADD,
     CBA_NODE_SUB,
     CBA_NODE_MUL,
@@ -169,8 +169,6 @@ struct Cba_Ntk_t_
     // attributes
     Vec_Int_t    vInstIds; // instance names  (used by parser to store instance name as NameId)       
     Vec_Int_t    vNameIds; // original names as NameId  
-    Vec_Int_t    vRangesL; // ranges as NameId
-    Vec_Int_t    vRangesR; // ranges as NameId
 };
 
 
@@ -210,15 +208,12 @@ static inline void           Cba_NtkSetHost( Cba_Ntk_t * p, int n, int i )   { p
 static inline Vec_Int_t *    Cba_NtkCopies( Cba_Ntk_t * p )                  { return &p->pDesign->vCopies;                                                                }
 static inline int            Cba_NtkCopy( Cba_Ntk_t * p, int i )             { return Vec_IntEntry( Cba_NtkCopies(p), p->iObjStart + i );                                  }
 static inline void           Cba_NtkSetCopy( Cba_Ntk_t * p, int i, int x )   { Vec_IntWriteEntry( Cba_NtkCopies(p), p->iObjStart + i, x );                                 }
-static inline int            Cba_NtkIsWordLevel( Cba_Ntk_t * p )             { return Vec_IntSize(&p->vRangesL) > 0;                                                       }
 
 static inline Cba_ObjType_t  Cba_ObjType( Cba_Ntk_t * p, int i )             { return (Cba_ObjType_t)Vec_IntEntry(&p->vTypes, i);                                          }
 static inline int            Cba_ObjFuncId( Cba_Ntk_t * p, int i )           { return Vec_IntEntry(&p->vFuncs, i);                                                         }
 static inline int            Cba_ObjFaninId( Cba_Ntk_t * p, int i )          { return Vec_IntEntry(&p->vFanins, i);                                                        }
 static inline int            Cba_ObjInstId( Cba_Ntk_t * p, int i )           { return Vec_IntEntry(&p->vInstIds, i);                                                       }
 static inline int            Cba_ObjNameId( Cba_Ntk_t * p, int i )           { return Vec_IntEntry(&p->vNameIds, i);                                                       }
-static inline int            Cba_ObjRangeLId( Cba_Ntk_t * p, int i )         { return Vec_IntEntry(&p->vRangesL, i);                                                       }
-static inline int            Cba_ObjRangeRId( Cba_Ntk_t * p, int i )         { return Vec_IntEntry(&p->vRangesR, i);                                                       }
 
 static inline int            Cba_ObjIsPi( Cba_Ntk_t * p, int i )             { return Cba_ObjType(p, i) == CBA_OBJ_PI;                                                     }
 static inline int            Cba_ObjIsPo( Cba_Ntk_t * p, int i )             { return Cba_ObjType(p, i) == CBA_OBJ_PO;                                                     }
@@ -341,6 +336,33 @@ static inline void Cba_ManSetupArray( Cba_Man_t * p, Vec_Int_t * vTo, Vec_Int_t
 }
 
 // constructors desctructors
+static inline int Cba_ObjAdd( Cba_Ntk_t * p, int i, Cba_ObjType_t Type, int Func, int Fanin, int NameId )
+{
+    if ( Type == CBA_OBJ_PI )
+        Vec_IntWriteEntry( &p->vInputs,  Func, i );
+    if ( Type == CBA_OBJ_PO )
+        Vec_IntWriteEntry( &p->vOutputs, Func, i );
+    if ( Type >= 0 )
+        Vec_IntWriteEntry( &p->vTypes,   i, Type );
+    if ( Func >= 0 )
+        Vec_IntWriteEntry( &p->vFuncs,   i, Func );
+    if ( Fanin >= 0 )
+        Vec_IntWriteEntry( &p->vFanins,  i, Fanin );
+    if ( NameId >= 0 )
+        Vec_IntWriteEntry( &p->vNameIds, i, NameId );
+    return i;
+}
+static inline int Cba_BoxAdd( Cba_Ntk_t * p, Cba_Ntk_t * pBox, int NameId )
+{
+    int i, ObjId;
+    for ( i = 0; i < Cba_NtkPiNum(pBox); i++ )
+        Cba_ObjAdd( p, p->nObjs++, CBA_OBJ_BI, i, -1, -1 );
+    ObjId = Cba_ObjAdd( p, p->nObjs++, CBA_OBJ_BOX, Cba_NtkId(pBox), -1, NameId );
+    for ( i = 0; i < Cba_NtkPoNum(pBox); i++ )
+        Cba_ObjAdd( p, p->nObjs++, CBA_OBJ_BO, i, ObjId, -1 );
+    Cba_NtkSetHost( pBox, Cba_NtkId(p), ObjId );
+    return ObjId;
+}
 static inline Cba_Ntk_t * Cba_NtkAlloc( Cba_Man_t * p, char * pName )
 {
     int iModelId = Abc_NamStrFindOrAdd( p->pModels, pName, NULL );
@@ -354,16 +376,13 @@ static inline Cba_Ntk_t * Cba_NtkAlloc( Cba_Man_t * p, char * pName )
         printf( "Model with name %s already exists.\n", pName );
     return pNtk;
 }
-static inline void Cba_NtkResize( Cba_Ntk_t * p, int nObjs, int fRange )
+static inline void Cba_NtkResize( Cba_Ntk_t * p, int nObjs )
 {
     assert( Vec_IntSize(&p->vTypes) == 0 );
     Cba_ManFetchArray( p->pDesign, &p->vTypes,   nObjs );
     Cba_ManFetchArray( p->pDesign, &p->vFuncs,   nObjs );
     Cba_ManFetchArray( p->pDesign, &p->vFanins,  nObjs );
     Cba_ManFetchArray( p->pDesign, &p->vNameIds, nObjs );
-    if ( !fRange ) return;
-    Cba_ManFetchArray( p->pDesign, &p->vRangesL, nObjs );
-    Cba_ManFetchArray( p->pDesign, &p->vRangesR, nObjs );
 }
 static inline Cba_Man_t * Cba_ManAlloc( Cba_Man_t * pOld, char * pFileName )
 {

src/base/cba/cbaBuild.c

@@ -169,7 +169,7 @@ Cba_Ntk_t * Cba_NtkBuild( Cba_Man_t * pNew, Cba_Ntk_t * pNtk, Vec_Int_t * vMap,
 
     // start network
     pNtkNew = Cba_ManNtk( pNew, Cba_NtkId(pNtk) );
-    Cba_NtkResize( pNtkNew, nObjCount, 0 );
+    Cba_NtkResize( pNtkNew, nObjCount );
 
     // fill object information
     Cba_NtkForEachPi( pNtk, NameId, i )

src/base/cba/cbaNtk.c

@@ -137,7 +137,7 @@ Cba_Man_t * Cba_ManDupStart( Cba_Man_t * p, Vec_Int_t * vNtkSizes )
     Cba_Ntk_t * pNtk; int i;
     Cba_Man_t * pNew = Cba_ManClone( p );
     Cba_ManForEachNtk( p, pNtk, i )
-        Cba_NtkResize( Cba_ManNtk(pNew, i), vNtkSizes ? Vec_IntEntry(vNtkSizes, i) : Cba_NtkObjNum(pNtk), Cba_NtkIsWordLevel(pNtk) );
+        Cba_NtkResize( Cba_ManNtk(pNew, i), vNtkSizes ? Vec_IntEntry(vNtkSizes, i) : Cba_NtkObjNum(pNtk) );
     Vec_IntFill( &p->vCopies, Cba_ManObjNum(p), -1 );
     Cba_ManForEachNtk( p, pNtk, i )
         Cba_NtkDupStart( Cba_ManNtk(pNew, i), pNtk );
@@ -196,6 +196,99 @@ Cba_Man_t * Cba_ManDup( Cba_Man_t * p )
 }
 
 
+#if 0
+
+/**Function*************************************************************
+
+  Synopsis    [Count the number of objects.]
+
+  Description []
+               
+  SideEffects []
+
+  SeeAlso     []
+
+***********************************************************************/
+int Cba_NtkCountObj_rec( Cba_Ntk_t * p )
+{
+    int iObj, Count = 0;
+    if ( p->nObjsRec >= 0 )
+        return p->nObjsRec;
+    Cba_NtkForEachBox( p, iObj )
+        Count += Cba_BoxIsPrim(p, iObj) ? 1 : Cba_NtkCountObj_rec( Cba_ObjBoxModel(p, iObj) );
+    return Count;
+}
+int Cba_ManCountObj( Cba_Man_t * p )
+{
+    Cba_Ntk_t * pNtk; int i;
+    Cba_ManForEachNtk( p, pNtk, i )
+        pNtk->nObjsRec = -1;
+    return Cba_NtkCountObj_rec( Cba_ManRoot(p) );
+}
+
+
+/**Function*************************************************************
+
+  Synopsis    []
+
+  Description []
+               
+  SideEffects []
+
+  SeeAlso     []
+
+***********************************************************************/
+void Cba_NtkCollapse_rec( Cba_Ntk_t * pNew, Cba_Ntk_t * p, Vec_Int_t * vSigs )
+{
+    int i, k, iObj, iTerm;
+    // set PI copies
+    Cba_NtkCleanCopies( p );
+    assert( Vec_IntSize(vSigs) == Cba_NtkPiNum(p) );
+    Cba_NtkForEachPi( pRoot, iObj, i )
+        Cba_ObjSetCopy( pRoot, iObj, Vec_IntEntry(vSigs, i) );
+    // duplicate internal objects
+    Cba_ManForEachBox( p, iObj )
+        if ( Cba_BoxIsPrim(p, iObj) )
+            Cba_BoxDup( pNew, p, iObj );
+    // duplicate other modules
+    Cba_ManForEachBox( p, iObj )
+        if ( !Cba_BoxIsPrim(p, iObj) )
+        {
+            Vec_IntClear( vSigs );
+            Cba_BoxForEachBi( iObj, iTerm, k )
+                Vec_IntPush( vSigs, Cba_ObjCopy(p, Cba_ObjFanin(p, iTerm)) );
+            Cba_NtkCollapse_rec( pNew, Cba_ObjBoxModel(p, iObj), vSigs );
+            Cba_BoxForEachBo( iObj, iTerm, k )
+                Cba_ObjAddFanin( pNew, Cba_ObjCopy(p, iObj), Vec_IntEntry(vSigs, k) );
+        }
+    // connect objects
+    Cba_ManForEachObj( p, iObj )
+        if ( Cba_ObjType(p, iObj) == CBA_OBJ_BI || Cba_ObjType(p, iObj) == CBA_OBJ_BO )
+            Cba_ObjAddFanin( pNew, Cba_ObjCopy(p, iObj), Cba_ObjCopy(p, Cba_ObjFanin(p, iObj)) );
+    // collect POs
+    Vec_IntClear( vSigs );
+    Cba_NtkForEachPi( pRoot, iObj, i )
+        Vec_IntPush( vSigs, Cba_ObjCopy(p, Cba_ObjFanin(p, iObj)) );
+}
+Cba_Man_t * Cba_ManCollapse( Cba_Man_t * p )
+{
+    Cba_Man_t * pNew = Cba_ManAlloc( NULL, Cba_ManName(p) );
+    Cba_Ntk_t * pRootNew = Cba_NtkAlloc( pNew, Cba_NtkName(pRoot) );
+    int i, iObj;
+    Vec_Int_t * vSigs = Vec_IntAlloc( 1000 );
+    Cba_Ntk_t * pRoot = Cba_ManRoot( p );
+    Cba_NtkForEachPi( pRoot, iObj, i )
+        Vec_IntPush( vSigns, Cba_ObjDup(pRootNew, pRoot, iObj) );
+    Cba_NtkCollapse_rec( pRootNew, pRoot, vSigns );
+    assert( Vec_IntSize(vSigns) == Cba_NtkPoNum(pRoot) );
+    Cba_NtkForEachPo( pRoot, iObj, i )
+        Cba_ObjAddFanin( pRootNew, Cba_ObjDup(pRootNew, pRoot, iObj), Vec_IntEntry(vSigns, i) );
+    Vec_IntFree( vSigs );
+    return pNew;
+}
+
+#endif
+
 ////////////////////////////////////////////////////////////////////////
 ///                       END OF FILE                                ///
 ////////////////////////////////////////////////////////////////////////

src/base/cba/cbaPrs.h

@@ -48,6 +48,31 @@ typedef enum {
 ///                         BASIC TYPES                              ///
 ////////////////////////////////////////////////////////////////////////
 
+// network
+typedef struct Cba_Prn_t_ Cba_Prn_t;
+struct Cba_Prn_t_
+{
+    int          iModuleName;
+    // interface
+    Vec_Int_t    vOrder;    
+    // signal names
+    Vec_Int_t    vInouts;   // inouts 
+    Vec_Int_t    vInputs;   // inputs 
+    Vec_Int_t    vOutputs;  // outputs
+    Vec_Int_t    vWires;    // wires  
+    // signal ranges
+    Vec_Int_t    vInoutsR;  // inouts 
+    Vec_Int_t    vInputsR;  // inputs 
+    Vec_Int_t    vOutputsR; // outputs
+    Vec_Int_t    vWiresR;   // wires  
+    // objects
+    Vec_Int_t    vObjBegs;  // object beginnings
+    Vec_Int_t    vObjects;  // object data (ModuleId; InstId; FormNameId/ActNameId/ActRange)
+    // concatenations
+    Vec_Int_t    vConBegs;  // concatenation beginnings
+    Vec_Int_t    vConcats;  // concatenation data
+};
+
 // parser
 typedef struct Cba_Prs_t_ Cba_Prs_t;
 struct Cba_Prs_t_