New demitering features.

src/aig/saig/saig.h

@@ -170,6 +170,7 @@ extern int               Saig_ManDemiterSimple( Aig_Man_t * p, Aig_Man_t ** ppAi
 extern int               Saig_ManDemiterSimpleDiff( Aig_Man_t * p, Aig_Man_t ** ppAig0, Aig_Man_t ** ppAig1 );
 extern int               Saig_ManDemiterDual( Aig_Man_t * p, Aig_Man_t ** ppAig0, Aig_Man_t ** ppAig1 );
 extern int               Ssw_SecSpecialMiter( Aig_Man_t * p0, Aig_Man_t * p1, int nFrames, int fVerbose );
+extern int               Saig_ManDemiterNew( Aig_Man_t * pMan );
 /*=== saigOutdec.c ==========================================================*/
 extern Aig_Man_t *       Saig_ManDecPropertyOutput( Aig_Man_t * pAig, int nLits, int fVerbose );
 /*=== saigPhase.c ==========================================================*/

src/aig/saig/saigMiter.c

@@ -1213,6 +1213,100 @@ int Ssw_SecSpecialMiter( Aig_Man_t * p0, Aig_Man_t * p1, int nFrames, int fVerbo
     return RetValue;
 }
 
+
+
+/**Function*************************************************************
+
+  Synopsis    [Performs demitering of the network.]
+
+  Description []
+
+  SideEffects []
+
+  SeeAlso     []
+
+***********************************************************************/
+int Saig_ManDemiterNew( Aig_Man_t * pMan )
+{
+    Vec_Ptr_t * vSuper, * vSupp0, * vSupp1;
+    Aig_Obj_t * pObj, * pTemp, * pFan0, * pFan1;
+    int i, k;
+    vSuper = Vec_PtrAlloc( 100 );
+    Saig_ManForEachPo( pMan, pObj, i )
+    {
+        if ( pMan->nConstrs && i >= pMan->nConstrs )
+            break;
+        printf( "Output %3d : ", i );
+        if ( Aig_ObjIsConst1(Aig_ObjFanin0(pObj)) )
+        {
+            if ( !Aig_ObjFaninC0(pObj) )
+                printf( "Const1\n" );
+            else
+                printf( "Const0\n" );
+            continue;
+        }
+        if ( !Aig_ObjIsNode(Aig_ObjFanin0(pObj)) )
+        {
+            printf( "Terminal\n" );
+            continue;
+        }
+        // check AND
+        if ( !Aig_ObjFaninC0(pObj) )
+        { 
+            printf( "AND  " );
+            if ( Aig_ObjRecognizeExor(Aig_ObjFanin0(pObj), &pFan0, &pFan1) )
+                printf( " Yes" );
+            else
+                printf( " No" );
+            printf( "\n" );
+            continue;
+        }
+        // check OR
+        Aig_ObjCollectSuper( Aig_ObjFanin0(pObj), vSuper );
+        printf( "OR with %d inputs    ", Vec_PtrSize(vSuper) );
+        if ( Vec_PtrSize(vSuper) == 2 )
+        {
+            if ( Aig_ObjRecognizeExor(Aig_ObjFanin0(pObj), &pFan0, &pFan1) )
+            {
+                printf( " Yes" );
+                printf( "\n" );
+
+                vSupp0 = Aig_Support( pMan, Aig_Regular(pFan0) );
+                Vec_PtrForEachEntry( Aig_Obj_t *, vSupp0, pTemp, k )
+                    if ( Saig_ObjIsLo(pMan, pTemp) )
+                        printf( " %d", Aig_ObjPioNum(pTemp) );
+                printf( "\n" );
+                Vec_PtrFree( vSupp0 );
+
+                vSupp1 = Aig_Support( pMan, Aig_Regular(pFan1) );
+                Vec_PtrForEachEntry( Aig_Obj_t *, vSupp1, pTemp, k )
+                    if ( Saig_ObjIsLo(pMan, pTemp) )
+                        printf( " %d", Aig_ObjPioNum(pTemp) );
+                printf( "\n" );
+                Vec_PtrFree( vSupp1 );
+            }
+            else
+                printf( " No" );
+            printf( "\n" );
+            continue;
+        }
+/*
+        Vec_PtrForEachEntry( Aig_Obj_t *, vSuper, pTemp, k )
+            if ( Aig_ObjRecognizeExor(Aig_Regular(pTemp), &pFan0, &pFan1) )
+            {
+                printf( " Yes" );
+                if ( Aig_IsComplement(pTemp) )
+                    pFan0 = Aig_Not(pFan0);
+            }
+            else
+                printf( " No" );
+*/
+        printf( "\n" );
+    }
+    Vec_PtrFree( vSuper );
+    return 1;
+}
+
 ////////////////////////////////////////////////////////////////////////
 ///                       END OF FILE                                ///
 ////////////////////////////////////////////////////////////////////////

src/base/abci/abc.c

@@ -5519,6 +5519,8 @@ int Abc_CommandDemiter( Abc_Frame_t * pAbc, int argc, char ** argv )
     extern int Abc_NtkDarDemiter( Abc_Ntk_t * pNtk );
     extern int Abc_NtkDarDemiterDual( Abc_Ntk_t * pNtk, int fVerbose );
 
+    extern int Abc_NtkDarDemiterNew( Abc_Ntk_t * pNtk );
+
     // set defaults
     fDual = 0;
     fSeq = 1;
@@ -5540,7 +5542,7 @@ int Abc_CommandDemiter( Abc_Frame_t * pAbc, int argc, char ** argv )
         default:
             goto usage;
         }
-    }
+    } 
 
     if ( pNtk == NULL )
     {
@@ -5554,14 +5556,16 @@ int Abc_CommandDemiter( Abc_Frame_t * pAbc, int argc, char ** argv )
         return 1;
     }
 
-    if ( (Abc_NtkPoNum(pNtk) & 1) )
-    {
-        Abc_Print( -1, "The number of POs should be even.\n" );
-        return 0;
-    }
+//    Abc_NtkDarDemiterNew( pNtk );
+//    return 0;
 
     if ( fDual )
     {
+        if ( (Abc_NtkPoNum(pNtk) & 1) )
+        {
+            Abc_Print( -1, "The number of POs should be even.\n" );
+            return 0;
+        }
         if ( !Abc_NtkDarDemiterDual( pNtk, fVerbose ) )
         {
             Abc_Print( -1, "Demitering has failed.\n" );

src/base/abci/abcDar.c

@@ -2063,6 +2063,59 @@ int Abc_NtkDarDemiter( Abc_Ntk_t * pNtk )
   SeeAlso     []
 
 ***********************************************************************/
+int Abc_NtkDarDemiterNew( Abc_Ntk_t * pNtk )
+{ 
+    char * pFileNameGeneric, pFileName0[1000], pFileName1[1000];
+    Aig_Man_t * pMan, * pPart0, * pPart1;//, * pMiter;
+    // derive the AIG manager
+    pMan = Abc_NtkToDar( pNtk, 0, 1 );
+    if ( pMan == NULL )
+    {
+        printf( "Converting network into AIG has failed.\n" );
+        return 0;
+    }
+
+    Saig_ManDemiterNew( pMan );
+    Aig_ManStop( pMan );
+    return 1;
+
+//    if ( !Saig_ManDemiterSimple( pMan, &pPart0, &pPart1 ) )
+    if ( !Saig_ManDemiterSimpleDiff( pMan, &pPart0, &pPart1 ) )
+    {
+        printf( "Demitering has failed.\n" );
+        return 0;
+    }
+    // create file names
+    pFileNameGeneric = Extra_FileNameGeneric( pNtk->pSpec );
+    sprintf( pFileName0,  "%s%s",  pFileNameGeneric, "_part0.aig" ); 
+    sprintf( pFileName1,  "%s%s",  pFileNameGeneric, "_part1.aig" ); 
+    ABC_FREE( pFileNameGeneric );
+    // dump files
+    Ioa_WriteAiger( pPart0, pFileName0, 0, 0 );
+    Ioa_WriteAiger( pPart1, pFileName1, 0, 0 );
+    printf( "Demitering produced two files \"%s\" and \"%s\".\n", pFileName0, pFileName1 );
+    // create two-level miter
+//    pMiter = Saig_ManCreateMiterTwo( pPart0, pPart1, 2 );
+//    Aig_ManDumpBlif( pMiter, "miter01.blif", NULL, NULL );
+//    Aig_ManStop( pMiter );
+//    printf( "The new miter is written into file \"%s\".\n", "miter01.blif" );
+    Aig_ManStop( pPart0 );
+    Aig_ManStop( pPart1 );
+    Aig_ManStop( pMan );
+    return 1;
+} 
+
+/**Function*************************************************************
+
+  Synopsis    [Gives the current ABC network to AIG manager for processing.]
+
+  Description []
+               
+  SideEffects []
+
+  SeeAlso     []
+
+***********************************************************************/
 int Abc_NtkDarDemiterDual( Abc_Ntk_t * pNtk, int fVerbose )
 { 
     char * pFileNameGeneric, pFileName0[1000], pFileName1[1000];