Adding option to &saveaig to compare AIGs by node count.

src/base/abci/abc.c

@@ -30622,7 +30622,7 @@ int Abc_CommandAbc9SaveAig( Abc_Frame_t * pAbc, int argc, char ** argv )
         Abc_Print( -1, "Empty network.\n" );
         return 1;
     }
-    if ( pAbc->pGiaSaved != NULL && Gia_ManAndNum(pAbc->pGiaSaved) <= Gia_ManAndNum(pAbc->pGia) )
+    if ( fArea && pAbc->pGiaSaved != NULL && Gia_ManAndNum(pAbc->pGiaSaved) <= Gia_ManAndNum(pAbc->pGia) )
         return 0;
     // save the design as best
     Gia_ManStopP( &pAbc->pGiaSaved );