Added counting hits and misses during structural hashing.

src/aig/gia/gia.h

@@ -149,6 +149,8 @@ struct Gia_Man_t_
     Vec_Flt_t *    vTiming;       // arrival/required/slack
     void *         pManTime;      // the timing manager
     void *         pLutLib;       // LUT library
+    word           nHashHit;      // hash table hit
+    word           nHashMiss;     // hash table miss
 };
 
 

src/aig/gia/giaHash.c

@@ -490,8 +490,12 @@ int Gia_ManHashAnd( Gia_Man_t * p, int iLit0, int iLit1 )
         iLit0 ^= iLit1, iLit1 ^= iLit0, iLit0 ^= iLit1;
     {
         int * pPlace = Gia_ManHashFind( p, iLit0, iLit1 );
-        if ( *pPlace ) 
+        if ( *pPlace )
+        {
+            p->nHashHit++;
             return *pPlace;
+        }
+        p->nHashMiss++;
         if ( p->nObjs < p->nObjsAlloc )
             return *pPlace = Gia_ManAppendAnd( p, iLit0, iLit1 );
         else

src/aig/gia/giaMan.c

@@ -70,6 +70,7 @@ Gia_Man_t * Gia_ManStart( int nObjsMax )
 ***********************************************************************/
 void Gia_ManStop( Gia_Man_t * p )  
 {
+    printf( "Hash table hits = %12u.   Hash table misses = %12u.\n", (int)p->nHashHit, (int)p->nHashMiss );
     Tim_ManStopP( (Tim_Man_t **)&p->pManTime );
     assert( p->pManTime == NULL );
     Vec_PtrFreeFree( p->vNamesIn );

src/base/abc/abcHieNew.c

@@ -369,7 +369,8 @@ int Au_NtkAllocObj( Au_Ntk_t * p, int nFanins, int Type )
     {
         int nObjInt2 = 63 + 64 * (((nObjInt-63) >> 6) + (((nObjInt-63) & 63) > 0));
         assert( nObjInt2 >= nObjInt );
-        p->nUseful += nObjInt - nObjInt2;
+//        if ( nObjInt2 + 64 < (1 << 12) )
+//            p->nUseful += nObjInt - nObjInt2;
         nObjInt = nObjInt2;
     }