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Logic sharing for multi-input gates.

This commit is contained in:
Alan Mishchenko 2012-03-25 23:10:35 -07:00
parent 8ed3e40a52
commit 45f07795ef
1 changed files with 4 additions and 4 deletions
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8
src/base/abci/abcExtract.c
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@ -95,7 +95,7 @@ void Abc_ShaManStop( Abc_ShaMan_t * p )
Vec_Wrd_t * Abc_NtkShareSuperXor( Abc_Obj_t * pObj, int * pfCompl, int * pCounter )
{
Abc_Ntk_t * pNtk = Abc_ObjNtk(pObj);
Abc_Obj_t * pObjC, * pObj0, * pObj1, * pRoot;
Abc_Obj_t * pObjC, * pObj0, * pObj1, * pRoot = NULL;
Vec_Wrd_t * vSuper;
word Num, NumNext;
int i, k, fCompl = 0;
@ -159,7 +159,7 @@ Vec_Wrd_t * Abc_NtkShareSuperXor( Abc_Obj_t * pObj, int * pfCompl, int * pCounte
Vec_Wrd_t * Abc_NtkShareSuperAnd( Abc_Obj_t * pObj, int * pCounter )
{
Abc_Ntk_t * pNtk = Abc_ObjNtk(pObj);
Abc_Obj_t * pObj0, * pObj1, * pRoot;
Abc_Obj_t * pObj0, * pObj1, * pRoot = NULL;
Vec_Wrd_t * vSuper;
word Num, NumNext;
int i, k;
@ -245,7 +245,7 @@ void Abc_NtkTraverseSupersXor_rec( Abc_ShaMan_t * p, Abc_Obj_t * pObj, Vec_Ptr_t
int k, fCompl;
word Num;
vSuper = Abc_NtkShareSuperXor( pObj, &fCompl, &p->nFoundGates );
if ( Vec_WrdSize(vSuper) >= p->nMultiSize )
if ( Vec_WrdSize(vSuper) <= 1 || Vec_WrdSize(vSuper) >= p->nMultiSize )
{
Vec_WrdForEachEntry( vSuper, Num, k )
{
@ -285,7 +285,7 @@ void Abc_NtkTraverseSupersAnd_rec( Abc_ShaMan_t * p, Abc_Obj_t * pObj, Vec_Ptr_t
return;
assert( Abc_ObjIsNode(pObj) );
vSuper = Abc_NtkShareSuperAnd( pObj, &p->nFoundGates );
if ( Vec_WrdSize(vSuper) == 0 || Vec_WrdSize(vSuper) >= p->nMultiSize )
if ( Vec_WrdSize(vSuper) <= 1 || Vec_WrdSize(vSuper) >= p->nMultiSize )
{
Vec_WrdForEachEntry( vSuper, Num, k )
{