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Corner case bug fix in 'speedup'.

This commit is contained in:
Alan Mishchenko 2011-07-20 10:55:58 +07:00
parent c511bccb67
commit bc63966e4a
1 changed files with 1 additions and 1 deletions
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2
src/base/abci/abcSpeedup.c
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@ -444,7 +444,7 @@ void Abc_NtkSpeedupNode( Abc_Ntk_t * pNtk, Abc_Ntk_t * pAig, Abc_Obj_t * pNode,
// create choice node
pAnd = Abc_ObjRegular(pNode->pCopy); // repr
pObj = Abc_ObjRegular(ppCofs[0]); // new
if ( pAnd->pData == NULL && pObj->pData == NULL && !Abc_AigCheckTfi(pObj, pAnd) )
if ( pAnd->pData == NULL && pObj->pData == NULL && !Abc_AigNodeIsConst(pObj) && !Abc_AigCheckTfi(pObj, pAnd) )
{
pObj->pData = pAnd->pData;
pAnd->pData = pObj;