Various changes.

src/aig/gia/giaSimBase.c

@@ -177,15 +177,19 @@ static inline void Gia_ManSimPatSimAnd3( Gia_Man_t * p, int i, Gia_Obj_t * pObj,
             pSimsC1[w] |= (pSims2[w] | (pSims1[w] ^ Diff1)) & pSimsC2[w];
         }
 }
-Vec_Wrd_t * Gia_ManSimPatSimIn( Gia_Man_t * pGia, Vec_Wrd_t * vSims, int fIns )
+Vec_Wrd_t * Gia_ManSimPatSimIn( Gia_Man_t * pGia, Vec_Wrd_t * vSims, int fIns, Vec_Int_t * vAnds )
 {
     Gia_Obj_t * pObj;
     int i, Id, nWords = Vec_WrdSize(vSims) / Gia_ManObjNum(pGia);
     Vec_Wrd_t * vSimsCi = fIns ? Vec_WrdStart( Gia_ManCiNum(pGia) * nWords ) : NULL;
     Vec_Wrd_t * vSimsC  = Vec_WrdStart( Vec_WrdSize(vSims) );
     assert( Vec_WrdSize(vSims) % Gia_ManObjNum(pGia) == 0 );
-    Gia_ManForEachCoDriverId( pGia, Id, i )
-        memset( Vec_WrdEntryP(vSimsC, Id*nWords), 0xFF, sizeof(word)*nWords );
+    if ( vAnds )
+        Vec_IntForEachEntry( vAnds, Id, i )
+            memset( Vec_WrdEntryP(vSimsC, Id*nWords), 0xFF, sizeof(word)*nWords );
+    else
+        Gia_ManForEachCoDriverId( pGia, Id, i )
+            memset( Vec_WrdEntryP(vSimsC, Id*nWords), 0xFF, sizeof(word)*nWords );
     Gia_ManForEachAndReverse( pGia, pObj, i ) 
         Gia_ManSimPatSimAnd3( pGia, i, pObj, nWords, vSims, vSimsC );
     if ( !fIns )
@@ -200,7 +204,7 @@ void Gia_ManSimPatSimInTest( Gia_Man_t * pGia )
     int nWords = 10;
     Vec_Wrd_t * vSimsCi = Vec_WrdStartRandom( Gia_ManCiNum(pGia) * nWords );
     Vec_Wrd_t * vSims   = Gia_ManSimPatSimOut( pGia, vSimsCi, 0 );
-    Vec_Wrd_t * vSims2  = Gia_ManSimPatSimIn( pGia, vSims, 0 );
+    Vec_Wrd_t * vSims2  = Gia_ManSimPatSimIn( pGia, vSims, 0, NULL );
     int nOnes  = Abc_TtCountOnesVec( Vec_WrdArray(vSims2), Vec_WrdSize(vSims2) );
     int nTotal = 64*nWords*Gia_ManCandNum(pGia);
     printf( "Ratio = %6.2f %%\n", 100.0*nOnes/nTotal );
@@ -208,6 +212,54 @@ void Gia_ManSimPatSimInTest( Gia_Man_t * pGia )
     Vec_WrdFree( vSims2 );
     Vec_WrdFree( vSimsCi );
 }
+static inline void Gia_ManSimPatSimAnd4( Gia_Man_t * p, int i, Gia_Obj_t * pObj, int nWords, Vec_Wrd_t * vSims, Vec_Wrd_t * vSimsC )
+{
+    word pComps[2] = { ~(word)0, 0 };
+    word Diff0 = pComps[Gia_ObjFaninC0(pObj)];
+    word Diff1 = pComps[Gia_ObjFaninC1(pObj)];
+    word * pSims0 = Vec_WrdArray(vSims) + nWords*Gia_ObjFaninId0(pObj, i);
+    word * pSims1 = Vec_WrdArray(vSims) + nWords*Gia_ObjFaninId1(pObj, i);
+    word * pSimsC0 = Vec_WrdArray(vSimsC) + nWords*Gia_ObjFaninId0(pObj, i);
+    word * pSimsC1 = Vec_WrdArray(vSimsC) + nWords*Gia_ObjFaninId1(pObj, i);
+    word * pSimsC2 = Vec_WrdArray(vSimsC) + nWords*i; int w;
+    if ( Gia_ObjIsXor(pObj) )
+        for ( w = 0; w < nWords; w++ )
+            pSimsC2[w] = pSimsC0[w] & pSimsC1[w];
+    else
+        for ( w = 0; w < nWords; w++ )
+            pSimsC2[w] = (pSimsC0[w] & pSimsC1[w]) | ((pSims0[w] ^ Diff0) & pSimsC0[w]) | ((pSims1[w] ^ Diff1) & pSimsC1[w]);
+}
+Vec_Wrd_t * Gia_ManSimPatSimC( Gia_Man_t * pGia, Vec_Wrd_t * vSims, Vec_Wrd_t * vSimsCiC )
+{
+    Gia_Obj_t * pObj;
+    int i, Id, nWords = Vec_WrdSize(vSims) / Gia_ManObjNum(pGia);
+    Vec_Wrd_t * vSimsC = Vec_WrdStart( Vec_WrdSize(vSims) );
+    assert( Vec_WrdSize(vSims) % Gia_ManObjNum(pGia) == 0 );
+    memset( Vec_WrdEntryP(vSimsC, 0), 0xFF, sizeof(word)*nWords );
+    Gia_ManForEachCiId( pGia, Id, i )
+        memmove( Vec_WrdEntryP(vSimsC, Id*nWords), Vec_WrdEntryP(vSimsCiC, i*nWords), sizeof(word)*nWords );
+    Gia_ManForEachAnd( pGia, pObj, i ) 
+        Gia_ManSimPatSimAnd4( pGia, i, pObj, nWords, vSims, vSimsC );
+    return vSimsC;
+}
+void Gia_ManSimPatSimCTest( Gia_Man_t * pGia )
+{
+    int nWords = 10;
+    Vec_Wrd_t * vSimsCi  = Vec_WrdStartRandom( Gia_ManCiNum(pGia) * nWords );
+    Vec_Wrd_t * vSims    = Gia_ManSimPatSimOut( pGia, vSimsCi, 0 );
+    Vec_Wrd_t * vSims2   = Gia_ManSimPatSimIn( pGia, vSims, 0, NULL );
+    Vec_Wrd_t * vSimsCi2 = Gia_ManSimPatSimIn( pGia, vSims, 1, NULL );
+    Vec_Wrd_t * vSims3   = Gia_ManSimPatSimC( pGia, vSims, vSimsCi2 );
+    int nOnes2 = Abc_TtCountOnesVec( Vec_WrdArray(vSims2), Vec_WrdSize(vSims2) );
+    int nOnes3 = Abc_TtCountOnesVec( Vec_WrdArray(vSims3), Vec_WrdSize(vSims3) );
+    int nTotal = 64*nWords*Gia_ManCandNum(pGia);
+    printf( "Ratio = %6.2f %%   Ratio = %6.2f %%\n", 100.0*nOnes2/nTotal, 100.0*nOnes3/nTotal );
+    Vec_WrdFree( vSims );
+    Vec_WrdFree( vSims2 );
+    Vec_WrdFree( vSims3 );
+    Vec_WrdFree( vSimsCi );
+    Vec_WrdFree( vSimsCi2 );
+}
 void Gia_ManSimPatResim( Gia_Man_t * pGia, Vec_Int_t * vObjs, int nWords, Vec_Wrd_t * vSims )
 {
     Gia_Obj_t * pObj; int i;

src/misc/util/abc_global.h

@@ -516,6 +516,7 @@ static inline void Abc_ReverseOrder( int * pA, int nA )
 extern void   Abc_MergeSort( int * pInput, int nSize );
 extern int *  Abc_MergeSortCost( int * pCosts, int nSize );
 extern void   Abc_MergeSortCost2( int * pInput, int nSize, int * pCost );
+extern void   Abc_MergeSortCost2Reverse( int * pInput, int nSize, int * pCost );
 extern void   Abc_QuickSort1( word * pData, int nSize, int fDecrease );
 extern void   Abc_QuickSort2( word * pData, int nSize, int fDecrease );
 extern void   Abc_QuickSort3( word * pData, int nSize, int fDecrease );

src/misc/util/utilSort.c

@@ -250,6 +250,109 @@ void Abc_MergeSortCost2( int * pInput, int nSize, int * pCost )
   SeeAlso     []
 
 ***********************************************************************/
+void Abc_SortMergeCost2Reverse( int * p1Beg, int * p1End, int * p2Beg, int * p2End, int * pOut, int * pCost )
+{
+    int nEntries = (p1End - p1Beg) + (p2End - p2Beg);
+    int * pOutBeg = pOut;
+    while ( p1Beg < p1End && p2Beg < p2End )
+    {
+        if ( pCost[*p1Beg] == pCost[*p2Beg] )
+            *pOut++ = *p1Beg++, *pOut++ = *p2Beg++; 
+        else if ( pCost[*p1Beg] > pCost[*p2Beg] )
+            *pOut++ = *p1Beg++; 
+        else // if ( pCost[*p1Beg] < pCost[*p2Beg] )
+            *pOut++ = *p2Beg++; 
+    }
+    while ( p1Beg < p1End )
+        *pOut++ = *p1Beg++; 
+    while ( p2Beg < p2End )
+        *pOut++ = *p2Beg++;
+    assert( pOut - pOutBeg == nEntries );
+}
+
+/**Function*************************************************************
+
+  Synopsis    [Recursive sorting.]
+
+  Description []
+               
+  SideEffects []
+
+  SeeAlso     []
+
+***********************************************************************/
+void Abc_SortCost2Reverse_rec( int * pInBeg, int * pInEnd, int * pOutBeg, int * pCost )
+{
+    int nSize = pInEnd - pInBeg;
+    assert( nSize > 0 );
+    if ( nSize == 1 )
+        return;
+    if ( nSize == 2 )
+    {
+         if ( pCost[pInBeg[0]] < pCost[pInBeg[1]] )
+         {
+             pInBeg[0] ^= pInBeg[1];
+             pInBeg[1] ^= pInBeg[0];
+             pInBeg[0] ^= pInBeg[1];
+         }
+    }
+    else if ( nSize < 8 )
+    {
+        int temp, i, j, best_i;
+        for ( i = 0; i < nSize-1; i++ )
+        {
+            best_i = i;
+            for ( j = i+1; j < nSize; j++ )
+                if ( pCost[pInBeg[j]] > pCost[pInBeg[best_i]] )
+                    best_i = j;
+            temp = pInBeg[i]; 
+            pInBeg[i] = pInBeg[best_i]; 
+            pInBeg[best_i] = temp;
+        }
+    }
+    else
+    {
+        Abc_SortCost2Reverse_rec( pInBeg, pInBeg + nSize/2, pOutBeg, pCost );
+        Abc_SortCost2Reverse_rec( pInBeg + nSize/2, pInEnd, pOutBeg + nSize/2, pCost );
+        Abc_SortMergeCost2Reverse( pInBeg, pInBeg + nSize/2, pInBeg + nSize/2, pInEnd, pOutBeg, pCost );
+        memcpy( pInBeg, pOutBeg, sizeof(int) * nSize );
+    }
+}
+
+/**Function*************************************************************
+
+  Synopsis    [Returns the sorted array of integers.]
+
+  Description [This procedure is about 10% faster than qsort().]
+               
+  SideEffects []
+
+  SeeAlso     []
+
+***********************************************************************/
+void Abc_MergeSortCost2Reverse( int * pInput, int nSize, int * pCost )
+{
+    int * pOutput;
+    if ( nSize < 2 )
+        return;
+    pOutput = (int *) malloc( sizeof(int) * nSize );
+    Abc_SortCost2Reverse_rec( pInput, pInput + nSize, pOutput, pCost );
+    free( pOutput );
+}
+
+
+
+/**Function*************************************************************
+
+  Synopsis    [Merging two lists of entries.]
+
+  Description []
+               
+  SideEffects []
+
+  SeeAlso     []
+
+***********************************************************************/
 void Abc_MergeSortCostMerge( int * p1Beg, int * p1End, int * p2Beg, int * p2End, int * pOut )
 {
     int nEntries = (p1End - p1Beg) + (p2End - p2Beg);