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Making 'fold' and 'unfold' skip constant POs (fixed).

This commit is contained in:
Alan Mishchenko 2013-12-04 00:02:21 -08:00
parent 681483c904
commit ecdcfbba5c
1 changed files with 5 additions and 4 deletions
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9
src/aig/saig/saigConstr.c
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@ -283,7 +283,7 @@ Aig_Man_t * Saig_ManDupUnfoldConstrs( Aig_Man_t * pAig )
vConsAll = Vec_PtrAlloc( Saig_ManPoNum(pAig) );
Saig_ManForEachPo( pAig, pObj, i )
{
if ( Aig_ObjFanin0(pObj) == Aig_ManConst1(pAig) )
if ( Aig_ObjChild0(pObj) == Aig_ManConst0(pAig) )
continue;
RetValue = Saig_ManDetectConstr( pAig, i, &vOuts, &vCons );
if ( RetValue == 0 )
@ -394,9 +394,10 @@ Aig_Man_t * Saig_ManDupFoldConstrs( Aig_Man_t * pAig, Vec_Int_t * vConstrs )
// create primary output
Saig_ManForEachPo( pAig, pObj, i )
{
if ( Aig_ObjFanin0(pObj) == Aig_ManConst1(pAig) )
continue;
pMiter = Aig_And( pAigNew, Aig_ObjChild0Copy(pObj), Aig_Not(pFlopIn) );
if ( Aig_ObjChild0(pObj) == Aig_ManConst0(pAig) ) // the output is a constant 0
pMiter = Aig_ObjChild0Copy(pObj);
else
pMiter = Aig_And( pAigNew, Aig_ObjChild0Copy(pObj), Aig_Not(pFlopIn) );
Aig_ObjCreateCo( pAigNew, pMiter );
}