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Backward reachability using circuit cofactoring.

This commit is contained in:
Alan Mishchenko 2012-01-07 21:12:27 +07:00
parent c3ab7843bb
commit d1450e7733
1 changed files with 13 additions and 9 deletions
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22
src/aig/gia/giaCCof.c
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@ -132,12 +132,12 @@ void Gia_ManCofExtendSolver( Ccf_Man_t * p )
}
}
static inline int Gia_Obj0Copy( Vec_Int_t * vCopies, Gia_Man_t * pGia, Gia_Obj_t * pObj )
{ return Gia_LitNotCond( Vec_IntEntry(vCopies, Gia_ObjFaninId0p(pGia, pObj)), Gia_ObjFaninC0(pObj) ); }
static inline int Gia_Obj1Copy( Vec_Int_t * vCopies, Gia_Man_t * pGia, Gia_Obj_t * pObj )
{ return Gia_LitNotCond( Vec_IntEntry(vCopies, Gia_ObjFaninId1p(pGia, pObj)), Gia_ObjFaninC1(pObj) ); }
static inline int Gia_Obj0Copy( Vec_Int_t * vCopies, int Fan0, int fCompl0 )
{ return Gia_LitNotCond( Vec_IntEntry(vCopies, Fan0), fCompl0 ); }
static inline int Gia_Obj1Copy( Vec_Int_t * vCopies, int Fan1, int fCompl1 )
{ return Gia_LitNotCond( Vec_IntEntry(vCopies, Fan1), fCompl1 ); }
/**Function*************************************************************
Synopsis [Cofactor the circuit w.r.t. the given assignment.]
@ -159,11 +159,15 @@ void Gia_ManCofOneDerive_rec( Ccf_Man_t * p, int Id )
assert( Gia_ObjIsCi(pObj) || Gia_ObjIsAnd(pObj) );
if ( Gia_ObjIsAnd(pObj) )
{
Gia_ManCofOneDerive_rec( p, Gia_ObjFaninId0p(p->pFrames, Gia_ManObj(p->pFrames, Id)) );
Gia_ManCofOneDerive_rec( p, Gia_ObjFaninId1p(p->pFrames, Gia_ManObj(p->pFrames, Id)) );
int fCompl0 = Gia_ObjFaninC0(pObj);
int fCompl1 = Gia_ObjFaninC1(pObj);
int Fan0 = Gia_ObjFaninId0p(p->pFrames, pObj);
int Fan1 = Gia_ObjFaninId1p(p->pFrames, pObj);
Gia_ManCofOneDerive_rec( p, Fan0 );
Gia_ManCofOneDerive_rec( p, Fan1 );
Res = Gia_ManHashAnd( p->pFrames,
Gia_Obj0Copy(p->vCopies, p->pFrames, Gia_ManObj(p->pFrames, Id)),
Gia_Obj1Copy(p->vCopies, p->pFrames, Gia_ManObj(p->pFrames, Id)) );
Gia_Obj0Copy(p->vCopies, Fan0, fCompl0),
Gia_Obj1Copy(p->vCopies, Fan1, fCompl1) );
}
else if ( Gia_ObjCioId(pObj) >= Gia_ManRegNum(p->pGia) ) // PI
Res = sat_solver_var_value( p->pSat, Id );