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Bug fix in XOR balancing.

This commit is contained in:
Alan Mishchenko 2013-09-15 23:18:43 -07:00
parent 549fd2ed15
commit 5d2dc04144
1 changed files with 3 additions and 4 deletions
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7
src/opt/dar/darBalance.c
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@ -513,10 +513,6 @@ Aig_Obj_t * Dar_Balance_rec( Aig_Man_t * pNew, Aig_Obj_t * pObjOld, Vec_Vec_t *
// check if supergate contains two nodes in the opposite polarity
if ( vSuper->nSize == 0 )
return (Aig_Obj_t *)(pObjOld->pData = Aig_ManConst0(pNew));
if ( vSuper->nSize == 1 )
return (Aig_Obj_t *)((Aig_Obj_t *)Vec_PtrEntry(vSuper, 0))->pData;
if ( Vec_PtrSize(vSuper) < 2 )
printf( "Dar_Balance_rec: Internal error!\n" );
// for each old node, derive the new well-balanced node
for ( i = 0; i < Vec_PtrSize(vSuper); i++ )
{
@ -525,6 +521,9 @@ Aig_Obj_t * Dar_Balance_rec( Aig_Man_t * pNew, Aig_Obj_t * pObjOld, Vec_Vec_t *
return NULL;
vSuper->pArray[i] = Aig_NotCond( pObjNew, Aig_IsComplement((Aig_Obj_t *)vSuper->pArray[i]) );
}
// check for exactly one node
if ( vSuper->nSize == 1 )
return (Aig_Obj_t *)Vec_PtrEntry(vSuper, 0);
// build the supergate
#ifdef USE_LUTSIZE_BALANCE
pObjNew = Dar_BalanceBuildSuperTop( pNew, vSuper, Aig_ObjType(pObjOld), fUpdateLevel, 6 );