/**CFile**************************************************************** FileName [giaTest.c] SystemName [ABC: Logic synthesis and verification system.] PackageName [Scalable AIG package.] Synopsis [] Author [Alan Mishchenko] Affiliation [UC Berkeley] Date [Ver. 1.0. Started - June 20, 2005.] Revision [$Id: giaTest.c,v 1.00 2005/06/20 00:00:00 alanmi Exp $] ***********************************************************************/ #include "gia.h" #include "misc/mem/mem2.h" #include "misc/util/utilTruth.h" ABC_NAMESPACE_IMPL_START //////////////////////////////////////////////////////////////////////// /// DECLARATIONS /// //////////////////////////////////////////////////////////////////////// #define MIG_NONE 0x7FFFFFFF //#define MIG_MASK 0x0000FFFF //#define MIG_BASE 16 #define MIG_MASK 0x0000FFF #define MIG_BASE 12 typedef struct Mig_Fan_t_ Mig_Fan_t; struct Mig_Fan_t_ { unsigned fCompl : 1; // the complemented attribute unsigned Id : 31; // fanin ID }; typedef struct Mig_Obj_t_ Mig_Obj_t; struct Mig_Obj_t_ { Mig_Fan_t pFans[4]; }; typedef struct Mig_Man_t_ Mig_Man_t; struct Mig_Man_t_ { char * pName; // name int nObjs; // number of objects int nRegs; // number of flops Vec_Ptr_t vPages; // memory pages Vec_Int_t vCis; // CI IDs Vec_Int_t vCos; // CO IDs // object iterator Mig_Obj_t * pPage; // current page int iPage; // current page index // attributes int nTravIds; // traversal ID counter Vec_Int_t vTravIds; // traversal IDs Vec_Int_t vCopies; // copies Vec_Int_t vLevels; // levels Vec_Int_t vRefs; // ref counters Vec_Int_t vSibls; // choice nodes }; /* Usage of fanin atrributes -------------------------------------------------------------------------------------------------------------- Const0 Terminal CI CO Buf Node Node2 Node3 And2 XOR2 MUX MAJ Sentinel -------------------------------------------------------------------------------------------------------------- 0 - -/fanin0 - fanin0 fanin0 fanin0 fanin0 fanin0 fanin0 fanin1 fanin0 fanin1 - 1 - - - - - fanin1 fanin1 fanin1 fanin1 fanin0 fanin1 fanin0 - 2 - CIO ID CIO ID CIO ID - -/fanin2 - fanin2 - - fanin2 fanin2 - 3 0 ID ID ID ID ID ID ID ID ID ID ID - -------------------------------------------------------------------------------------------------------------- One memory page contain 2^MIG_BASE+2 16-byte objects. - the first object contains the pointer to the manager (8 bytes) followed by the pointer to the page array (8 bytes) - the next 2^MIG_BASE are potentially used as objects - the last object is a sentinel to signal the end of the page */ static inline int Mig_IdPage( int v ) { return v >> MIG_BASE; } static inline int Mig_IdCell( int v ) { return v & MIG_MASK; } static inline char * Mig_ManName( Mig_Man_t * p ) { return p->pName; } static inline int Mig_ManCiNum( Mig_Man_t * p ) { return Vec_IntSize(&p->vCis); } static inline int Mig_ManCoNum( Mig_Man_t * p ) { return Vec_IntSize(&p->vCos); } static inline int Mig_ManPiNum( Mig_Man_t * p ) { return Vec_IntSize(&p->vCis) - p->nRegs; } static inline int Mig_ManPoNum( Mig_Man_t * p ) { return Vec_IntSize(&p->vCos) - p->nRegs; } static inline int Mig_ManRegNum( Mig_Man_t * p ) { return p->nRegs; } static inline int Mig_ManObjNum( Mig_Man_t * p ) { return p->nObjs; } static inline int Mig_ManNodeNum( Mig_Man_t * p ) { return p->nObjs - Vec_IntSize(&p->vCis) - Vec_IntSize(&p->vCos) - 1; } static inline int Mig_ManCandNum( Mig_Man_t * p ) { return Mig_ManCiNum(p) + Mig_ManNodeNum(p); } static inline void Mig_ManSetRegNum( Mig_Man_t * p, int v ) { p->nRegs = v; } static inline Mig_Obj_t * Mig_ManPage( Mig_Man_t * p, int v ) { return (Mig_Obj_t *)Vec_PtrEntry(&p->vPages, Mig_IdPage(v)); } static inline Mig_Obj_t * Mig_ManObj( Mig_Man_t * p, int v ) { assert(v >= 0 && v < p->nObjs); return Mig_ManPage(p, v) + Mig_IdCell(v); } static inline Mig_Obj_t * Mig_ManCi( Mig_Man_t * p, int v ) { return Mig_ManObj( p, Vec_IntEntry(&p->vCis,v) ); } static inline Mig_Obj_t * Mig_ManCo( Mig_Man_t * p, int v ) { return Mig_ManObj( p, Vec_IntEntry(&p->vCos,v) ); } static inline Mig_Obj_t * Mig_ManPi( Mig_Man_t * p, int v ) { assert( v < Mig_ManPiNum(p) ); return Mig_ManCi( p, v ); } static inline Mig_Obj_t * Mig_ManPo( Mig_Man_t * p, int v ) { assert( v < Mig_ManPoNum(p) ); return Mig_ManCo( p, v ); } static inline Mig_Obj_t * Mig_ManRo( Mig_Man_t * p, int v ) { assert( v < Mig_ManRegNum(p) ); return Mig_ManCi( p, Mig_ManPiNum(p)+v ); } static inline Mig_Obj_t * Mig_ManRi( Mig_Man_t * p, int v ) { assert( v < Mig_ManRegNum(p) ); return Mig_ManCo( p, Mig_ManPoNum(p)+v ); } static inline Mig_Obj_t * Mig_ManConst0( Mig_Man_t * p ) { return Mig_ManObj(p, 0); } static inline int Mig_FanCompl( Mig_Obj_t * p, int i ) { return p->pFans[i].fCompl; } static inline int Mig_FanId( Mig_Obj_t * p, int i ) { return p->pFans[i].Id; } static inline int Mig_FanIsNone( Mig_Obj_t * p, int i ) { return p->pFans[i].Id == MIG_NONE; } static inline int Mig_FanSetCompl( Mig_Obj_t * p, int i, int v ) { assert( !(v >> 1) ); return p->pFans[i].fCompl = v; } static inline int Mig_FanSetId( Mig_Obj_t * p, int i, int v ) { assert(v >= 0 && v < MIG_NONE); return p->pFans[i].Id = v; } static inline int Mig_ObjIsNone( Mig_Obj_t * p ) { return Mig_FanIsNone( p, 3 ); } static inline int Mig_ObjIsConst0( Mig_Obj_t * p ) { return Mig_FanId( p, 3 ) == 0; } static inline int Mig_ObjIsTerm( Mig_Obj_t * p ) { return Mig_FanIsNone( p, 1 ) && !Mig_FanIsNone( p, 2 ); } static inline int Mig_ObjIsCi( Mig_Obj_t * p ) { return Mig_ObjIsTerm(p) && Mig_FanIsNone( p, 0 ); } static inline int Mig_ObjIsCo( Mig_Obj_t * p ) { return Mig_ObjIsTerm(p) && !Mig_FanIsNone( p, 0 ); } static inline int Mig_ObjIsBuf( Mig_Obj_t * p ) { return Mig_FanIsNone( p, 1 ) && Mig_FanIsNone( p, 2 ) && !Mig_FanIsNone( p, 0 ); } static inline int Mig_ObjIsNode( Mig_Obj_t * p ) { return!Mig_FanIsNone( p, 1 ); } static inline int Mig_ObjIsNode2( Mig_Obj_t * p ) { return Mig_ObjIsNode( p ) && Mig_FanIsNone( p, 2 ); } static inline int Mig_ObjIsNode3( Mig_Obj_t * p ) { return Mig_ObjIsNode( p ) && !Mig_FanIsNone( p, 2 ); } static inline int Mig_ObjIsAnd( Mig_Obj_t * p ) { return Mig_ObjIsNode2( p ) && Mig_FanId(p, 0) < Mig_FanId(p, 1); } static inline int Mig_ObjIsXor( Mig_Obj_t * p ) { return Mig_ObjIsNode2( p ) && Mig_FanId(p, 0) > Mig_FanId(p, 1); } static inline int Mig_ObjIsMux( Mig_Obj_t * p ) { return Mig_ObjIsNode3( p ); } static inline int Mig_ObjIsCand( Mig_Obj_t * p ) { return Mig_ObjIsNode(p) || Mig_ObjIsCi(p); } static inline int Mig_ObjId( Mig_Obj_t * p ) { return Mig_FanId( p, 3 ); } static inline void Mig_ObjSetId( Mig_Obj_t * p, int v ) { Mig_FanSetId( p, 3, v ); } static inline int Mig_ObjCioId( Mig_Obj_t * p ) { assert( Mig_ObjIsTerm(p) ); return Mig_FanId( p, 2 ); } static inline void Mig_ObjSetCioId( Mig_Obj_t * p, int v ) { assert( Mig_FanIsNone(p, 1) ); Mig_FanSetId( p, 2, v ); } static inline int Mig_ObjPhase( Mig_Obj_t * p ) { return Mig_FanCompl( p, 3 ); } static inline void Mig_ObjSetPhase( Mig_Obj_t * p, int v ) { Mig_FanSetCompl( p, 3, 1 ); } static inline Mig_Man_t * Mig_ObjMan( Mig_Obj_t * p ) { return *((Mig_Man_t**)(p - Mig_IdCell(Mig_ObjId(p)) - 1)); } static inline Mig_Obj_t ** Mig_ObjPageP( Mig_Obj_t * p ) { return *((Mig_Obj_t***)(p - Mig_IdCell(Mig_ObjId(p))) - 1);} static inline Mig_Obj_t * Mig_ObjObj( Mig_Obj_t * p, int i ) { return Mig_ManObj( Mig_ObjMan(p), i ); } static inline int Mig_ManIdToCioId( Mig_Man_t * p, int Id ) { return Mig_ObjCioId( Mig_ManObj(p, Id) ); } static inline int Mig_ManCiIdToId( Mig_Man_t * p, int CiId ) { return Mig_ObjId( Mig_ManCi(p, CiId) ); } static inline int Mig_ManCoIdToId( Mig_Man_t * p, int CoId ) { return Mig_ObjId( Mig_ManCo(p, CoId) ); } static inline int Mig_ObjIsPi( Mig_Obj_t * p ) { return Mig_ObjIsCi(p) && Mig_ObjCioId(p) < Mig_ManPiNum(Mig_ObjMan(p)); } static inline int Mig_ObjIsPo( Mig_Obj_t * p ) { return Mig_ObjIsCo(p) && Mig_ObjCioId(p) < Mig_ManPoNum(Mig_ObjMan(p)); } static inline int Mig_ObjIsRo( Mig_Obj_t * p ) { return Mig_ObjIsCi(p) && Mig_ObjCioId(p) >= Mig_ManPiNum(Mig_ObjMan(p)); } static inline int Mig_ObjIsRi( Mig_Obj_t * p ) { return Mig_ObjIsCo(p) && Mig_ObjCioId(p) >= Mig_ManPoNum(Mig_ObjMan(p)); } static inline Mig_Obj_t * Mig_ObjRoToRi( Mig_Obj_t * p ) { Mig_Man_t * pMan = Mig_ObjMan(p); assert( Mig_ObjIsRo(p) ); return Mig_ManCo(pMan, Mig_ManCoNum(pMan) - Mig_ManCiNum(pMan) + Mig_ObjCioId(p)); } static inline Mig_Obj_t * Mig_ObjRiToRo( Mig_Obj_t * p ) { Mig_Man_t * pMan = Mig_ObjMan(p); assert( Mig_ObjIsRi(p) ); return Mig_ManCi(pMan, Mig_ManCiNum(pMan) - Mig_ManCoNum(pMan) + Mig_ObjCioId(p)); } static inline int Mig_ObjHasFanin( Mig_Obj_t * p, int i ) { return i < 3 && Mig_FanId(p, i) != MIG_NONE; } static inline int Mig_ObjFaninId( Mig_Obj_t * p, int i ) { assert( i < 3 && Mig_FanId(p, i) < Mig_ObjId(p) ); return Mig_FanId( p, i ); } static inline int Mig_ObjFaninId0( Mig_Obj_t * p ) { return Mig_FanId( p, 0 ); } static inline int Mig_ObjFaninId1( Mig_Obj_t * p ) { return Mig_FanId( p, 1 ); } static inline int Mig_ObjFaninId2( Mig_Obj_t * p ) { return Mig_FanId( p, 2 ); } static inline Mig_Obj_t * Mig_ObjFanin( Mig_Obj_t * p, int i ) { return Mig_ManObj( Mig_ObjMan(p), Mig_ObjFaninId(p, i) ); } //static inline Mig_Obj_t * Mig_ObjFanin( Mig_Obj_t * p, int i ) { return Mig_ObjPageP(p)[Mig_IdPage(Mig_ObjFaninId(p, i))] + Mig_IdCell(Mig_ObjFaninId(p, i)); } static inline Mig_Obj_t * Mig_ObjFanin0( Mig_Obj_t * p ) { return Mig_FanIsNone(p, 0) ? NULL: Mig_ObjFanin(p, 0); } static inline Mig_Obj_t * Mig_ObjFanin1( Mig_Obj_t * p ) { return Mig_FanIsNone(p, 1) ? NULL: Mig_ObjFanin(p, 1); } static inline Mig_Obj_t * Mig_ObjFanin2( Mig_Obj_t * p ) { return Mig_FanIsNone(p, 2) ? NULL: Mig_ObjFanin(p, 2); } static inline int Mig_ObjFaninC( Mig_Obj_t * p, int i ) { assert( i < 3 ); return Mig_FanCompl(p, i); } static inline int Mig_ObjFaninC0( Mig_Obj_t * p ) { return Mig_FanCompl(p, 0); } static inline int Mig_ObjFaninC1( Mig_Obj_t * p ) { return Mig_FanCompl(p, 1); } static inline int Mig_ObjFaninC2( Mig_Obj_t * p ) { return Mig_FanCompl(p, 2); } static inline int Mig_ObjFaninLit( Mig_Obj_t * p, int i ) { return Abc_Var2Lit( Mig_FanId(p, i), Mig_FanCompl(p, i) ); } static inline void Mig_ObjFlipFaninC( Mig_Obj_t * p, int i ) { Mig_FanSetCompl( p, i, !Mig_FanCompl(p, i) ); } static inline int Mig_ObjWhatFanin( Mig_Obj_t * p, int i ) { if (Mig_FanId(p, 0) == i) return 0; if (Mig_FanId(p, 1) == i) return 1; if (Mig_FanId(p, 2) == i) return 2; return -1; } static inline void Mig_ObjSetFaninLit( Mig_Obj_t * p, int i, int l ) { assert( l >= 0 && (l >> 1) < Mig_ObjId(p) ); Mig_FanSetId(p, i, Abc_Lit2Var(l)); Mig_FanSetCompl(p, i, Abc_LitIsCompl(l)); } static inline int Mig_ObjSiblId( Mig_Obj_t * p ) { return Vec_IntSize(&Mig_ObjMan(p)->vSibls) == 0 ? 0: Vec_IntEntry(&Mig_ObjMan(p)->vSibls, Mig_ObjId(p)); } static inline Mig_Obj_t * Mig_ObjSibl( Mig_Obj_t * p ) { return Mig_ObjSiblId(p) == 0 ? NULL: Mig_ObjObj(p, Mig_ObjSiblId(p)); } static inline int Mig_ObjRefNum( Mig_Obj_t * p ) { return Vec_IntSize(&Mig_ObjMan(p)->vRefs) == 0 ? -1: Vec_IntEntry(&Mig_ObjMan(p)->vRefs, Mig_ObjId(p)); } static inline void Mig_ManIncrementTravId( Mig_Man_t * p ) { if ( p->vTravIds.pArray == NULL ) Vec_IntFill( &p->vTravIds, Mig_ManObjNum(p)+500, 0 ); p->nTravIds++; } static inline void Mig_ObjIncrementTravId( Mig_Obj_t * p ) { if ( Mig_ObjMan(p)->vTravIds.pArray == NULL ) Vec_IntFill( &Mig_ObjMan(p)->vTravIds, Mig_ManObjNum(Mig_ObjMan(p))+500, 0 ); Mig_ObjMan(p)->nTravIds++; } static inline void Mig_ObjSetTravIdCurrent( Mig_Obj_t * p ) { Vec_IntSetEntry(&Mig_ObjMan(p)->vTravIds, Mig_ObjId(p), Mig_ObjMan(p)->nTravIds ); } static inline void Mig_ObjSetTravIdPrevious( Mig_Obj_t * p ) { Vec_IntSetEntry(&Mig_ObjMan(p)->vTravIds, Mig_ObjId(p), Mig_ObjMan(p)->nTravIds-1 ); } static inline int Mig_ObjIsTravIdCurrent( Mig_Obj_t * p ) { return (Vec_IntGetEntry(&Mig_ObjMan(p)->vTravIds, Mig_ObjId(p)) == Mig_ObjMan(p)->nTravIds); } static inline int Mig_ObjIsTravIdPrevious( Mig_Obj_t * p ) { return (Vec_IntGetEntry(&Mig_ObjMan(p)->vTravIds, Mig_ObjId(p)) == Mig_ObjMan(p)->nTravIds-1); } static inline void Mig_ObjSetTravIdCurrentId( Mig_Man_t * p, int Id ) { Vec_IntSetEntry(&p->vTravIds, Id, p->nTravIds ); } static inline int Mig_ObjIsTravIdCurrentId( Mig_Man_t * p, int Id ) { return (Vec_IntGetEntry(&p->vTravIds, Id) == p->nTravIds); } // iterators over objects #define Mig_ManForEachObj( p, pObj ) \ for ( p->iPage = 0; p->iPage < Vec_PtrSize(&p->vPages) && \ ((p->pPage) = (Mig_Obj_t *)Vec_PtrEntry(&p->vPages, p->iPage)); p->iPage++ ) \ for ( pObj = p->pPage; !Mig_ObjIsNone(pObj); pObj++ ) #define Mig_ManForEachObj1( p, pObj ) \ for ( p->iPage = 0; p->iPage < Vec_PtrSize(&p->vPages) && \ ((p->pPage) = (Mig_Obj_t *)Vec_PtrEntry(&p->vPages, p->iPage)); p->iPage++ ) \ for ( pObj = p->pPage + (p->iPage == 0); !Mig_ObjIsNone(pObj); pObj++ ) #define Mig_ManForEachObjReverse( p, pObj ) \ for ( p->iPage = Vec_PtrSize(&p->vPages) - 1; p->iPage >= 0 && \ ((p->pPage) = (Mig_Obj_t *)Vec_PtrEntry(&p->vPages, p->iPage)); p->iPage-- ) \ for ( pObj = (p->iPage == Vec_PtrSize(&p->vPages) - 1) ? \ Mig_ManObj(p, Mig_ManObjNum(p)-1) : p->pPage + MIG_MASK; \ pObj - p->pPage >= 0; pObj-- ) #define Mig_ManForEachObjVec( vVec, p, pObj, i ) \ for ( i = 0; (i < Vec_IntSize(vVec)) && ((pObj) = Mig_ManObj(p, Vec_IntEntry(vVec,i))); i++ ) #define Mig_ManForEachNode( p, pObj ) \ Mig_ManForEachObj( p, pObj ) if ( !Mig_ObjIsNode(pObj) ) {} else #define Mig_ManForEachCi( p, pObj, i ) \ for ( i = 0; (i < Vec_IntSize(&p->vCis)) && ((pObj) = Mig_ManCi(p, i)); i++ ) #define Mig_ManForEachCo( p, pObj, i ) \ for ( i = 0; (i < Vec_IntSize(&p->vCos)) && ((pObj) = Mig_ManCo(p, i)); i++ ) // iterators over fanins #define Mig_ObjForEachFaninId( p, iFanin, i ) \ for ( i = 0; Mig_ObjHasFanin(p, i) && ((iFanin) = Mig_ObjFaninId(p, i)); i++ ) #define Mig_ObjForEachFanin( p, pFanin, i ) \ for ( i = 0; Mig_ObjHasFanin(p, i) && ((pFanin) = Mig_ObjFanin(p, i)); i++ ) //////////////////////////////////////////////////////////////////////// /// FUNCTION DEFINITIONS /// //////////////////////////////////////////////////////////////////////// /**Function************************************************************* Synopsis [] Description [] SideEffects [] SeeAlso [] ***********************************************************************/ static inline Mig_Obj_t * Mig_ManAppendObj( Mig_Man_t * p ) { Mig_Obj_t * pObj; assert( p->nObjs < MIG_NONE ); if ( p->nObjs >= (Vec_PtrSize(&p->vPages) << MIG_BASE) ) { Mig_Obj_t * pPage; int i; assert( p->nObjs == (Vec_PtrSize(&p->vPages) << MIG_BASE) ); pPage = ABC_FALLOC( Mig_Obj_t, MIG_MASK + 3 ); // 1 for mask, 1 for prefix, 1 for sentinel *((void **)pPage) = p; *((void ***)(pPage + 1) - 1) = Vec_PtrArray(&p->vPages); Vec_PtrPush( &p->vPages, pPage + 1 ); if ( *((void ***)(pPage + 1) - 1) != Vec_PtrArray(&p->vPages) ) Vec_PtrForEachEntry( Mig_Obj_t *, &p->vPages, pPage, i ) *((void ***)pPage - 1) = Vec_PtrArray(&p->vPages); } pObj = Mig_ManObj( p, p->nObjs++ ); assert( Mig_ObjIsNone(pObj) ); Mig_ObjSetId( pObj, p->nObjs-1 ); return pObj; } static inline int Mig_ManAppendCi( Mig_Man_t * p ) { Mig_Obj_t * pObj = Mig_ManAppendObj( p ); Mig_ObjSetCioId( pObj, Vec_IntSize(&p->vCis) ); Vec_IntPush( &p->vCis, Mig_ObjId(pObj) ); return Mig_ObjId(pObj) << 1; } static inline int Mig_ManAppendCo( Mig_Man_t * p, int iLit0 ) { Mig_Obj_t * pObj; assert( !Mig_ObjIsCo(Mig_ManObj(p, Abc_Lit2Var(iLit0))) ); pObj = Mig_ManAppendObj( p ); Mig_ObjSetFaninLit( pObj, 0, iLit0 ); Mig_ObjSetCioId( pObj, Vec_IntSize(&p->vCos) ); Vec_IntPush( &p->vCos, Mig_ObjId(pObj) ); return Mig_ObjId( pObj ) << 1; } static inline int Mig_ManAppendBuf( Mig_Man_t * p, int iLit0 ) { Mig_Obj_t * pObj; pObj = Mig_ManAppendObj( p ); Mig_ObjSetFaninLit( pObj, 0, iLit0 ); return Mig_ObjId( pObj ) << 1; } static inline int Mig_ManAppendAnd( Mig_Man_t * p, int iLit0, int iLit1 ) { Mig_Obj_t * pObj = Mig_ManAppendObj( p ); assert( iLit0 != iLit1 ); Mig_ObjSetFaninLit( pObj, 0, iLit0 < iLit1 ? iLit0 : iLit1 ); Mig_ObjSetFaninLit( pObj, 1, iLit0 < iLit1 ? iLit1 : iLit0 ); return Mig_ObjId( pObj ) << 1; } static inline int Mig_ManAppendXor( Mig_Man_t * p, int iLit0, int iLit1 ) { Mig_Obj_t * pObj = Mig_ManAppendObj( p ); assert( iLit0 != iLit1 ); assert( !Abc_LitIsCompl(iLit0) && !Abc_LitIsCompl(iLit1) ); Mig_ObjSetFaninLit( pObj, 0, iLit0 < iLit1 ? iLit1 : iLit0 ); Mig_ObjSetFaninLit( pObj, 1, iLit0 < iLit1 ? iLit0 : iLit1 ); return Mig_ObjId( pObj ) << 1; } static inline int Mig_ManAppendMux( Mig_Man_t * p, int iLit0, int iLit1, int iCtrl ) { Mig_Obj_t * pObj = Mig_ManAppendObj( p ); assert( iLit0 != iLit1 && iLit0 != iCtrl && iLit1 != iCtrl ); assert( !Abc_LitIsCompl(iLit0) || !Abc_LitIsCompl(iLit1) ); Mig_ObjSetFaninLit( pObj, 0, iLit0 < iLit1 ? iLit0 : iLit1 ); Mig_ObjSetFaninLit( pObj, 1, iLit0 < iLit1 ? iLit1 : iLit0 ); Mig_ObjSetFaninLit( pObj, 2, iLit0 < iLit1 ? iCtrl : Abc_LitNot(iCtrl) ); return Mig_ObjId( pObj ) << 1; } static inline int Mig_ManAppendMaj( Mig_Man_t * p, int iLit0, int iLit1, int iLit2 ) { Mig_Obj_t * pObj = Mig_ManAppendObj( p ); assert( iLit0 != iLit1 && iLit0 != iLit2 && iLit1 != iLit2 ); Mig_ObjSetFaninLit( pObj, 0, iLit0 < iLit1 ? iLit1 : iLit0 ); Mig_ObjSetFaninLit( pObj, 1, iLit0 < iLit1 ? iLit0 : iLit1 ); Mig_ObjSetFaninLit( pObj, 2, iLit2 ); return Mig_ObjId( pObj ) << 1; } /**Function************************************************************* Synopsis [] Description [] SideEffects [] SeeAlso [] ***********************************************************************/ static inline Mig_Man_t * Mig_ManStart() { Mig_Man_t * p; assert( sizeof(Mig_Obj_t) == 16 ); assert( (1 << MIG_BASE) == MIG_MASK + 1 ); p = ABC_CALLOC( Mig_Man_t, 1 ); Vec_IntGrow( &p->vCis, 1024 ); Vec_IntGrow( &p->vCos, 1024 ); Mig_ManAppendObj( p ); // const0 return p; } static inline void Mig_ManStop( Mig_Man_t * p ) { printf( "Using %d pages of %d entries each. Total memory %.2f MB.\n", Vec_PtrSize(&p->vPages), MIG_MASK + 1, 1.0 * Vec_PtrSize(&p->vPages) * (MIG_MASK + 1) * 16 / (1 << 20) ); // attributes ABC_FREE( p->vTravIds.pArray ); ABC_FREE( p->vCopies.pArray ); ABC_FREE( p->vLevels.pArray ); ABC_FREE( p->vRefs.pArray ); ABC_FREE( p->vSibls.pArray ); // pages Vec_PtrForEachEntry( Mig_Obj_t *, &p->vPages, p->pPage, p->iPage ) --p->pPage, ABC_FREE( p->pPage ); // objects ABC_FREE( p->vPages.pArray ); ABC_FREE( p->vCis.pArray ); ABC_FREE( p->vCos.pArray ); ABC_FREE( p->pName ); ABC_FREE( p ); } /**Function************************************************************* Synopsis [] Description [] SideEffects [] SeeAlso [] ***********************************************************************/ void Mig_ManSetRefs( Mig_Man_t * p ) { Mig_Obj_t * pObj; int i, iFanin; abctime clk = Abc_Clock(); Vec_IntFill( &p->vRefs, Mig_ManObjNum(p), 0 ); // increment references Mig_ManForEachObj( p, pObj ) Mig_ObjForEachFaninId( pObj, iFanin, i ) if ( Mig_ObjHasFanin(pObj, i) ) Vec_IntAddToEntry( &p->vRefs, Mig_ObjFaninId(pObj, i), 1 ); // check that internal nodes have fanins Mig_ManForEachNode( p, pObj ) assert( Vec_IntEntry(&p->vRefs, Mig_ObjId(pObj)) > 0 ); Abc_PrintTime( 1, "Time", Abc_Clock() - clk ); } /**Function************************************************************* Synopsis [] Description [] SideEffects [] SeeAlso [] ***********************************************************************/ int Mig_ManSuppSize_rec( Mig_Obj_t * pObj ) { if ( pObj == NULL ) return 0; if ( Mig_ObjIsTravIdCurrent(pObj) ) return 0; Mig_ObjSetTravIdCurrent(pObj); if ( Mig_ObjIsCi(pObj) ) return 1; assert( Mig_ObjIsNode(pObj) ); return Mig_ManSuppSize_rec( Mig_ObjFanin0(pObj) ) + Mig_ManSuppSize_rec( Mig_ObjFanin1(pObj) ) + Mig_ManSuppSize_rec( Mig_ObjFanin2(pObj) ); } int Mig_ManSuppSize2_rec( Mig_Man_t * p, int iObj ) { Mig_Obj_t * pObj; if ( iObj == MIG_NONE ) return 0; if ( Mig_ObjIsTravIdCurrentId(p, iObj) ) return 0; Mig_ObjSetTravIdCurrentId(p, iObj); pObj = Mig_ManObj( p, iObj ); if ( Mig_ObjIsCi(pObj) ) return 1; assert( Mig_ObjIsNode(pObj) ); return Mig_ManSuppSize2_rec( p, Mig_ObjFaninId0(pObj) ) + Mig_ManSuppSize2_rec( p, Mig_ObjFaninId1(pObj) ) + Mig_ManSuppSize2_rec( p, Mig_ObjFaninId2(pObj) ); } int Mig_ManSuppSizeOne( Mig_Obj_t * pObj ) { Mig_ObjIncrementTravId( pObj ); // return Mig_ManSuppSize_rec( pObj ); return Mig_ManSuppSize2_rec( Mig_ObjMan(pObj), Mig_ObjId(pObj) ); } int Mig_ManSuppSizeTest( Mig_Man_t * p ) { Mig_Obj_t * pObj; int Counter = 0; abctime clk = Abc_Clock(); Mig_ManForEachObj( p, pObj ) if ( Mig_ObjIsNode(pObj) ) Counter += (Mig_ManSuppSizeOne(pObj) <= 16); printf( "Nodes with small support %d (out of %d)\n", Counter, Mig_ManNodeNum(p) ); Abc_PrintTime( 1, "Time", Abc_Clock() - clk ); return Counter; } /**Function************************************************************* Synopsis [] Description [] SideEffects [] SeeAlso [] ***********************************************************************/ static inline int Mig_ObjFanin0Copy( Gia_Obj_t * pObj ) { return Abc_LitNotCond( Gia_ObjFanin0(pObj)->Value, Gia_ObjFaninC0(pObj) ); } static inline int Mig_ObjFanin1Copy( Gia_Obj_t * pObj ) { return Abc_LitNotCond( Gia_ObjFanin1(pObj)->Value, Gia_ObjFaninC1(pObj) ); } Mig_Man_t * Mig_ManCreate( Gia_Man_t * p ) { Mig_Man_t * pNew; Gia_Obj_t * pObj; int i; // create the new manager pNew = Mig_ManStart(); pNew->pName = Abc_UtilStrsav( p->pName ); Gia_ManConst0(p)->Value = 0; // create objects Gia_ManForEachObj1( p, pObj, i ) { if ( Gia_ObjIsAnd(pObj) ) pObj->Value = Mig_ManAppendAnd( pNew, Mig_ObjFanin0Copy(pObj), Mig_ObjFanin1Copy(pObj) ); else if ( Gia_ObjIsCi(pObj) ) pObj->Value = Mig_ManAppendCi( pNew ); else if ( Gia_ObjIsCo(pObj) ) pObj->Value = Mig_ManAppendCo( pNew, Mig_ObjFanin0Copy(pObj) ); else assert( 0 ); } Mig_ManSetRegNum( pNew, Gia_ManRegNum(p) ); return pNew; } void Mig_ManTest( Gia_Man_t * pGia ) { extern int Gia_ManSuppSizeTest( Gia_Man_t * p ); Mig_Man_t * p; Gia_ManSuppSizeTest( pGia ); p = Mig_ManCreate( pGia ); Mig_ManSuppSizeTest( p ); Mig_ManStop( p ); } #define MPM_CUT_MAX 64 #define MPM_VAR_MAX 20 #define MPM_UNIT_TIME 1 #define MPM_UNIT_AREA 10 #define MPM_UNIT_EDGE 100 typedef struct Mpm_Cut_t_ Mpm_Cut_t; // 8 bytes + NLeaves * 4 bytes struct Mpm_Cut_t_ { int hNext; // next cut unsigned iFunc : 26; // function unsigned fUseless : 1; // internal flag unsigned nLeaves : 5; // leaves int pLeaves[0]; // leaves }; typedef struct Mpm_Inf_t_ Mpm_Inf_t; // 32 bytes struct Mpm_Inf_t_ { int hCut; // cut handle unsigned nLeaves : 6; // the number of leaves unsigned mCost : 26; // area cost of this cut int mTime; // arrival time int mArea; // area (flow) int mEdge; // edge (flow) int mAveRefs; // area references word uSign; // cut signature }; typedef struct Mpm_Uni_t_ Mpm_Uni_t; // 48 bytes struct Mpm_Uni_t_ { Mpm_Inf_t Inf; // information unsigned iFunc : 25; // function unsigned fUseless : 1; // internal flag unsigned nLeaves : 6; // leaves int pLeaves[MPM_VAR_MAX]; // leaves }; typedef struct Mpm_Obj_t_ Mpm_Obj_t; // 32 bytes struct Mpm_Obj_t_ { int nRefs; // original references int nMapRefs; // exact mapping references int nEstRefs; // estimated mapping references int mRequired; // required time int mTime; // arrival time int mArea; // area int mEdge; // edge int iCutList; // cut list }; typedef struct Mpm_LibLut_t_ Mpm_LibLut_t; struct Mpm_LibLut_t_ { char * pName; // the name of the LUT library int LutMax; // the maximum LUT size int fVarPinDelays; // set to 1 if variable pin delays are specified int pLutAreas[MPM_VAR_MAX+1]; // the areas of LUTs int pLutDelays[MPM_VAR_MAX+1][MPM_VAR_MAX+1];// the delays of LUTs }; typedef struct Mpm_Man_t_ Mpm_Man_t; struct Mpm_Man_t_ { Mig_Man_t * pMig; // AIG manager // mapping parameters int nLutSize; // LUT size int nNumCuts; // cut count Mpm_LibLut_t * pLibLut; // LUT library // mapping attributes Mpm_Obj_t * pMapObjs; // mapping objects // cut computation Mmr_Step_t * pManCuts; // cut memory // temporary cut storage int nCutStore; // number of cuts in storage Mpm_Uni_t * pCutStore[MPM_CUT_MAX+1]; // storage for cuts // cut information Mpm_Uni_t pCutUnits[MPM_CUT_MAX+1]; // cut info units Vec_Int_t vFreeUnits; // free cut info units // object presence unsigned char * pObjPres; // object presence Mpm_Cut_t * pCutTemp; // temporary cut Vec_Str_t vObjShared; // object presence // cut comparison int (* pCutCmp) (Mpm_Inf_t *, Mpm_Inf_t *); // fanin cuts/signatures int nCuts[3]; // fanin cut counts Mpm_Cut_t * pCuts[3][MPM_CUT_MAX+1]; // fanin cuts word pSigns[3][MPM_CUT_MAX+1]; // fanin cut signatures // functionality // Dsd_Man_t * pManDsd; void * pManDsd; int pPerm[MPM_VAR_MAX]; }; // iterators over object cuts #define Mpm_ObjForEachCut( p, pObj, hCut, pCut ) \ for ( hCut = Mpm_ObjCutList(p, pObj); hCut && (pCut = Mpm_CutFetch(p, hCut)); hCut = pCut->hNext ) #define Mpm_ObjForEachCutSafe( p, pObj, hCut, pCut, hNext ) \ for ( hCut = Mpm_ObjCutList(p, pObj); hCut && (pCut = Mpm_CutFetch(p, hCut)) && ((hNext = pCut->hNext), 1); hCut = hNext ) // iterators over cut leaves #define Mpm_CutForEachLeafId( pCut, iLeafId, i ) \ for ( i = 0; i < (int)pCut->nLeaves && ((iLeafId = Abc_Lit2Var(pCut->pLeaves[i])), 1); i++ ) #define Mpm_CutForEachLeafMap( p, pCut, pLeaf, i ) \ for ( i = 0; i < (int)pCut->nLeaves && (pLeaf = Mpm_ManObjId(p, Abc_Lit2Var(pCut->pLeaves[i]))); i++ ) #define Mpm_CutForEachLeaf( p, pCut, pLeaf, i ) \ for ( i = 0; i < (int)pCut->nLeaves && (pLeaf = Mig_ManObj(p, Abc_Lit2Var(pCut->pLeaves[i]))); i++ ) static inline Mpm_Obj_t * Mpm_ManObj( Mpm_Man_t * p, Mig_Obj_t * pObj ) { return p->pMapObjs + Mig_ObjId(pObj); } static inline Mpm_Obj_t * Mpm_ManObjId( Mpm_Man_t * p, int iObj ) { return p->pMapObjs + iObj; } static inline int Mpm_ObjRefDec( Mpm_Man_t * p, Mig_Obj_t * pObj ) { return --Mpm_ManObj(p, pObj)->nRefs; } static inline int Mpm_ObjMapRef( Mpm_Man_t * p, Mig_Obj_t * pObj ) { return Mpm_ManObj(p, pObj)->nMapRefs; } static inline int Mpm_ObjMapRefDec( Mpm_Man_t * p, Mig_Obj_t * pObj ) { return --Mpm_ManObj(p, pObj)->nMapRefs; } static inline int Mpm_ObjEstRefInc( Mpm_Man_t * p, Mig_Obj_t * pObj ) { return Mpm_ManObj(p, pObj)->nEstRefs++; } static inline int Mpm_ObjCutList( Mpm_Man_t * p, Mig_Obj_t * pObj ) { return Mpm_ManObj(p, pObj)->iCutList; } static inline int Mpm_ObjArrTime( Mpm_Man_t * p, Mig_Obj_t * pObj ) { return Mpm_ManObj(p, pObj)->mTime; } static inline int Mpm_ObjReqTime( Mpm_Man_t * p, Mig_Obj_t * pObj ) { return Mpm_ManObj(p, pObj)->mRequired; } static inline int Mpm_ObjArrTimeId( Mpm_Man_t * p, int iObj ) { return Mpm_ManObjId(p, iObj)->mTime; } static inline int Mpm_ObjReqTimeId( Mpm_Man_t * p, int iObj ) { return Mpm_ManObjId(p, iObj)->mRequired; } static inline int Mpm_CutWordNum( int nLeaves ) { return (sizeof(Mpm_Cut_t)/sizeof(int) + nLeaves + 1) >> 1; } /**Function************************************************************* Synopsis [Cut manipulation.] Description [] SideEffects [] SeeAlso [] ***********************************************************************/ static inline int Mpm_CutAlloc( Mpm_Man_t * p, int nLeaves ) { Mpm_Cut_t * pCut; int nWords = Mpm_CutWordNum( nLeaves ); int hHandle = Mmr_StepFetch( p->pManCuts, nWords ); assert( nLeaves < 32 ); assert( (hHandle >> 26) == 0 ); pCut = (Mpm_Cut_t *)Mmr_StepEntry( p->pManCuts, nWords, hHandle ); pCut->nLeaves = nLeaves; pCut->hNext = 0; pCut->fUseless = 0; assert( pCut->iFunc == ~(unsigned)0 ); return (hHandle << 5) | nWords; } static inline Mpm_Cut_t * Mpm_CutFetch( Mpm_Man_t * p, int h ) { Mpm_Cut_t * pCut = (Mpm_Cut_t *)Mmr_StepEntry( p->pManCuts, h & 0x1F, h >> 5 ); assert( Mpm_CutWordNum(pCut->nLeaves) == (h & 0x1F) ); return pCut; } static inline Mpm_Cut_t * Mpm_ObjCutBest( Mpm_Man_t * p, Mig_Obj_t * pObj ) { return Mpm_CutFetch( p, Mpm_ManObj(p, pObj)->iCutList ); } static inline int Mpm_CutCreateZero( Mpm_Man_t * p, Mig_Obj_t * pObj ) { Mpm_Cut_t * pCut; int hCut = Mpm_CutAlloc( p, 0 ); pCut = Mpm_CutFetch( p, hCut ); pCut->iFunc = 0; // const0 return hCut; } static inline int Mpm_CutCreateUnit( Mpm_Man_t * p, Mig_Obj_t * pObj ) { Mpm_Cut_t * pCut; int hCut = Mpm_CutAlloc( p, 1 ); pCut = Mpm_CutFetch( p, hCut ); pCut->iFunc = 2; // var pCut->pLeaves[0] = Abc_Var2Lit( Mig_ObjId(pObj), 0 ); return hCut; } static inline int Mpm_CutCreate( Mpm_Man_t * p, int * pLeaves, int nLeaves, int fUseless ) { int hCutNew = Mpm_CutAlloc( p, nLeaves ); Mpm_Cut_t * pCutNew = Mpm_CutFetch( p, hCutNew ); pCutNew->fUseless = fUseless; pCutNew->nLeaves = nLeaves; memcpy( pCutNew->pLeaves, pLeaves, sizeof(int) * nLeaves ); return hCutNew; } static inline int Mpm_CutDup( Mpm_Man_t * p, Mpm_Cut_t * pCut, int fCompl ) { int hCutNew = Mpm_CutAlloc( p, pCut->nLeaves ); Mpm_Cut_t * pCutNew = Mpm_CutFetch( p, hCutNew ); pCutNew->iFunc = Abc_LitNotCond( pCut->iFunc, fCompl ); pCutNew->fUseless = pCut->fUseless; pCutNew->nLeaves = pCut->nLeaves; memcpy( pCutNew->pLeaves, pCut->pLeaves, sizeof(int) * pCut->nLeaves ); return hCutNew; } static inline int Mpm_CutCopySet( Mpm_Man_t * p, Mig_Obj_t * pObj, int fCompl ) { Mpm_Cut_t * pCut; int hCut, iList = 0, * pList = &iList; Mpm_ObjForEachCut( p, pObj, hCut, pCut ) { *pList = Mpm_CutDup( p, pCut, fCompl ); pList = &Mpm_CutFetch( p, *pList )->hNext; } *pList = 0; return iList; } static inline void Mpm_CutRecycle( Mpm_Man_t * p, int h ) { Mmr_StepRecycle( p->pManCuts, h & 0x1F, h >> 5 ); } /**Function************************************************************* Synopsis [Cut merging.] Description [] SideEffects [] SeeAlso [] ***********************************************************************/ static inline void Mpm_ManObjPresClean( Mpm_Man_t * p ) { int i; for ( i = 0; i < (int)p->pCutTemp->nLeaves; i++ ) p->pObjPres[Abc_Lit2Var(p->pCutTemp->pLeaves[i])] = (unsigned char)0xFF; p->pCutTemp->nLeaves = 0; Vec_StrClear(&p->vObjShared); } static inline void Mpm_ManObjPres( Mpm_Man_t * p, int k, int iLit ) { int iObj = Abc_Lit2Var(iLit); if ( p->pObjPres[iObj] == (unsigned char)0xFF ) { p->pObjPres[iObj] = p->pCutTemp->nLeaves; p->pCutTemp->pLeaves[p->pCutTemp->nLeaves++] = iLit; } else { int iLit0 = p->pCutTemp->pLeaves[p->pObjPres[iObj]]; assert( Abc_Lit2Var(iLit0) == Abc_Lit2Var(iLit) ); Vec_StrPush( &p->vObjShared, (unsigned char)k ); Vec_StrPush( &p->vObjShared, (unsigned char)Abc_Var2Lit((int)p->pObjPres[iObj], iLit0 != iLit) ); } } static inline int Mpm_ManSetIsSmaller( Mpm_Man_t * p, int * pLits, int nLits ) // check if pCut is contained in the current one { int i, Index; for ( i = 0; i < nLits; i++ ) { Index = (int)p->pObjPres[Abc_Lit2Var(pLits[i])]; if ( Index == 0xFF ) return 0; assert( Index < nLits ); } return 1; } static inline int Mpm_ManSetIsBigger( Mpm_Man_t * p, int * pLits, int nLits ) // check if pCut contains the current one { int i, Index; unsigned uMask = 0; for ( i = 0; i < nLits; i++ ) { Index = (int)p->pObjPres[Abc_Lit2Var(pLits[i])]; if ( Index == 0xFF ) continue; assert( Index < nLits ); uMask |= (1 << Index); } return uMask == ~(~(unsigned)0 << nLits); } static inline int Mpm_ManSetIsDisjoint( Mpm_Man_t * p, Mpm_Cut_t * pCut ) // check if pCut is disjoint { int i; for ( i = 0; i < (int)pCut->nLeaves; i++ ) if ( (int)p->pObjPres[Abc_Lit2Var(pCut->pLeaves[i])] != 0xFF ) return 0; return 1; } static inline int Mpm_ObjDeriveCut( Mpm_Man_t * p, Mpm_Cut_t * pCut0, Mpm_Cut_t * pCut1 ) // pCut0 is bigger { int i; Mpm_Cut_t * pCut = p->pCutTemp; // assert( pCut1 == NULL || pCut0->nLeaves >= pCut1->nLeaves ); Mpm_ManObjPresClean( p ); for ( i = 0; i < (int)pCut0->nLeaves; i++ ) Mpm_ManObjPres( p, i, pCut0->pLeaves[i] ); if ( pCut1 ) { for ( i = 0; i < (int)pCut1->nLeaves; i++ ) { Mpm_ManObjPres( p, i, pCut1->pLeaves[i] ); if ( (int)pCut->nLeaves > p->nLutSize ) return 0; } } pCut->hNext = 0; pCut->iFunc = 0; pCut->iFunc = ~pCut->iFunc; pCut->fUseless = 0; return 1; } /**Function************************************************************* Synopsis [Cut attibutes.] Description [] SideEffects [] SeeAlso [] ***********************************************************************/ static inline word Mpm_CutGetSign( Mpm_Cut_t * pCut ) { int i; word uSign = 0; for ( i = 0; i < (int)pCut->nLeaves; i++ ) uSign |= ((word)1 << (Abc_Lit2Var(pCut->pLeaves[i]) & 0x3F)); return uSign; } static inline int Mpm_CutGetArrTime( Mpm_Man_t * p, Mpm_Cut_t * pCut ) { Mpm_Obj_t * pLeaf; int i, ArrTime = 0; if ( p->pLibLut == NULL ) { Mpm_CutForEachLeafMap( p, pCut, pLeaf, i ) ArrTime = Abc_MaxInt( ArrTime, pLeaf->mTime ); ArrTime += MPM_UNIT_TIME; } else { int * pDelays = p->pLibLut->pLutDelays[pCut->nLeaves]; Mpm_CutForEachLeafMap( p, pCut, pLeaf, i ) ArrTime = Abc_MaxInt( ArrTime, pLeaf->mTime + pDelays[i] ); } return ArrTime; } static inline void Mpm_CutSetupInfo( Mpm_Man_t * p, Mpm_Cut_t * pCut, int ArrTime, Mpm_Inf_t * pInfo ) { Mpm_Obj_t * pLeaf; int i; memset( pInfo, 0, sizeof(Mpm_Inf_t) ); pInfo->mTime = ArrTime; pInfo->mCost = p->pLibLut ? p->pLibLut->pLutAreas[pCut->nLeaves] : MPM_UNIT_AREA; pInfo->mArea = pInfo->mCost; pInfo->mEdge = pInfo->nLeaves; Mpm_CutForEachLeafMap( p, pCut, pLeaf, i ) { if ( pLeaf->nMapRefs ) { pInfo->mArea += pLeaf->mArea; pInfo->mEdge += pLeaf->mEdge; } else { assert( pLeaf->nEstRefs > 0 ); pInfo->mArea += pLeaf->mArea / pLeaf->nEstRefs; pInfo->mEdge += pLeaf->mEdge / pLeaf->nEstRefs; pInfo->mAveRefs += MPM_UNIT_EDGE * pLeaf->nMapRefs; } pInfo->uSign |= ((word)1 << Abc_Lit2Var(pCut->pLeaves[i])); } pInfo->mAveRefs /= pCut->nLeaves; } /**Function************************************************************* Synopsis [Cut comparison.] Description [Returns positive number if new one is better than old one.] SideEffects [] SeeAlso [] ***********************************************************************/ int Mpm_CutCompareDelay( Mpm_Inf_t * pOld, Mpm_Inf_t * pNew ) { if ( pOld->mTime != pNew->mTime ) return pOld->mTime - pNew->mTime; if ( pOld->nLeaves != pNew->nLeaves ) return pOld->nLeaves - pNew->nLeaves; if ( pOld->mArea != pNew->mArea ) return pOld->mArea - pNew->mArea; if ( pOld->mEdge != pNew->mEdge ) return pOld->mEdge - pNew->mEdge; return 0; } int Mpm_CutCompareDelay2( Mpm_Inf_t * pOld, Mpm_Inf_t * pNew ) { if ( pOld->mTime != pNew->mTime ) return pOld->mTime - pNew->mTime; if ( pOld->mArea != pNew->mArea ) return pOld->mArea - pNew->mArea; if ( pOld->mEdge != pNew->mEdge ) return pOld->mEdge - pNew->mEdge; if ( pOld->nLeaves != pNew->nLeaves ) return pOld->nLeaves - pNew->nLeaves; return 0; } int Mpm_CutCompareArea( Mpm_Inf_t * pOld, Mpm_Inf_t * pNew ) { if ( pOld->mArea != pNew->mArea ) return pOld->mArea - pNew->mArea; if ( pOld->mEdge != pNew->mEdge ) return pOld->mEdge - pNew->mEdge; if ( pOld->mAveRefs != pNew->mAveRefs ) return pOld->mAveRefs - pNew->mAveRefs; if ( pOld->nLeaves != pNew->nLeaves ) return pOld->nLeaves - pNew->nLeaves; if ( pOld->mTime != pNew->mTime ) return pOld->mTime - pNew->mTime; return 0; } /**Function************************************************************* Synopsis [Cut translation.] Description [] SideEffects [] SeeAlso [] ***********************************************************************/ static inline Mpm_Uni_t * Mpm_CutToUnit( Mpm_Man_t * p, Mpm_Cut_t * pCut ) { Mpm_Uni_t * pUnit = p->pCutUnits + Vec_IntPop(&p->vFreeUnits); pUnit->iFunc = pCut->iFunc; pUnit->fUseless = pCut->fUseless; pUnit->nLeaves = pCut->nLeaves; memcpy( pUnit->pLeaves, pCut->pLeaves, sizeof(int) * pCut->nLeaves ); return pUnit; } static inline void Mpm_UnitRecycle( Mpm_Man_t * p, Mpm_Uni_t * pUnit ) { Vec_IntPush( &p->vFreeUnits, pUnit - p->pCutUnits ); } static inline void Mpm_UnitRecycleAll( Mpm_Man_t * p ) { int i; Vec_IntClear( &p->vFreeUnits ); for ( i = p->nNumCuts; i >= 0; i-- ) Vec_IntPush( &p->vFreeUnits, i ); assert( Vec_IntSize(&p->vFreeUnits) == p->nNumCuts + 1 ); } // compares cut against those present in the store int Mpm_ObjAddCutToStore( Mpm_Man_t * p, Mpm_Cut_t * pCut, int ArrTime ) { Mpm_Uni_t * pUnit, * pUnitNew; int k, iPivot, last; // create new unit pUnitNew = Mpm_CutToUnit( p, pCut ); Mpm_CutSetupInfo( p, pCut, ArrTime, &pUnitNew->Inf ); // special case when the cut store is empty if ( p->nCutStore == 0 ) { p->pCutStore[p->nCutStore++] = pUnitNew; return 1; } // special case when the cut store is full and last cut is better than new cut pUnit = p->pCutStore[p->nCutStore-1]; if ( p->nCutStore == p->nNumCuts && p->pCutCmp(&pUnitNew->Inf, &pUnit->Inf) > 0 ) { Mpm_UnitRecycle( p, pUnitNew ); return 0; } // find place of the given cut in the store assert( p->nCutStore <= p->nNumCuts ); for ( iPivot = p->nCutStore - 1; iPivot >= 0; iPivot-- ) if ( p->pCutCmp(&pUnitNew->Inf, &p->pCutStore[iPivot]->Inf) > 0 ) // iPivot-th cut is better than new cut break; // filter this cut using other cuts for ( k = 0; k <= iPivot; k++ ) { pUnit = p->pCutStore[k]; if ( pUnitNew->Inf.nLeaves >= pUnit->Inf.nLeaves && (pUnitNew->Inf.uSign & pUnit->Inf.uSign) == pUnit->Inf.uSign && Mpm_ManSetIsSmaller(p, pUnit->pLeaves, pUnit->nLeaves) ) { Mpm_UnitRecycle( p, pUnitNew ); return 0; } } // special case when the best cut is useless if ( p->pCutStore[0]->fUseless ) iPivot = -1; // insert this cut at location iPivot for ( k = p->nCutStore++; k > iPivot; k-- ) p->pCutStore[k] = p->pCutStore[k-1]; p->pCutStore[iPivot] = pUnitNew; // filter other cuts using this cut for ( k = last = iPivot + 1; k < p->nCutStore; k++ ) { pUnit = p->pCutStore[k]; if ( pUnitNew->Inf.nLeaves <= pUnit->Inf.nLeaves && (pUnitNew->Inf.uSign & pUnit->Inf.uSign) == pUnitNew->Inf.uSign && Mpm_ManSetIsBigger(p, pUnit->pLeaves, pUnit->nLeaves) ) { Mpm_UnitRecycle( p, pUnit ); continue; } p->pCutStore[last++] = p->pCutStore[k]; } p->nCutStore = last; // remove the last cut if too many if ( p->nCutStore >= p->nNumCuts ) Mpm_UnitRecycle( p, p->pCutStore[--p->nCutStore] ); assert( p->nCutStore <= p->nNumCuts ); return 1; } // create storage from cuts at the node void Mpm_ObjTranslateCutsToStore( Mpm_Man_t * p, Mig_Obj_t * pObj, int ReqTime ) { Mpm_Cut_t * pCut; int hCut, ArrTime; assert( p->nCutStore == 0 ); assert( Vec_IntSize(&p->vFreeUnits) == p->nNumCuts + 1 ); Mpm_ObjForEachCut( p, pObj, hCut, pCut ) { ArrTime = Mpm_CutGetArrTime( p, pCut ); if ( ArrTime > ReqTime ) continue; Mpm_ObjAddCutToStore( p, pCut, ArrTime ); } } // create cuts at the node from storage void Mpm_ObjTranslateCutsFromStore( Mpm_Man_t * p, Mig_Obj_t * pObj, int fAddUnit ) { Mpm_Uni_t * pUnit; int i, *pList = &Mpm_ManObj(p, pObj)->iCutList; assert( *pList == 0 ); assert( p->nCutStore > 0 && p->nCutStore <= p->nNumCuts ); for ( i = 0; i < p->nCutStore; i++ ) { pUnit = p->pCutStore[i]; *pList = Mpm_CutCreate( p, pUnit->pLeaves, pUnit->nLeaves, pUnit->fUseless ); pList = &Mpm_CutFetch(p, *pList)->hNext; Mpm_UnitRecycle( p, pUnit ); } *pList = fAddUnit ? Mpm_CutCreateUnit( p, pObj ) : 0; assert( Vec_IntSize(&p->vFreeUnits) == p->nNumCuts + 1 ); } /**Function************************************************************* Synopsis [Required times.] Description [] SideEffects [] SeeAlso [] ***********************************************************************/ static inline void Mpm_ManResetRequired( Mpm_Man_t * p ) { int i; for ( i = 0; i < Mig_ManObjNum(p->pMig); i++ ) p->pMapObjs[i].mRequired = ABC_INFINITY; } static inline int Mpm_ManFindArrivalMax( Mpm_Man_t * p ) { Mig_Obj_t * pObj; int i, ArrMax = 0; Mig_ManForEachCo( p->pMig, pObj, i ) ArrMax = Abc_MaxInt( ArrMax, Mpm_ObjArrTimeId(p, Mig_ObjFaninId0(pObj)) ); return ArrMax; } static inline void Mpm_ManComputeRequired( Mpm_Man_t * p, int ArrMax ) { Mig_Obj_t * pObj; Mpm_Obj_t * pFanin; Mpm_Cut_t * pCut; int i, Required; Mpm_ManResetRequired( p ); Mig_ManForEachObjReverse( p->pMig, pObj ) { if ( Mig_ObjIsCo(pObj) ) Mpm_ManObjId(p, Mig_ObjFaninId0(pObj))->mRequired = ArrMax; else if ( Mig_ObjIsNode(pObj) && Mig_ObjRefNum(pObj) ) { pCut = Mpm_ObjCutBest( p, pObj ); Required = Mpm_ManObj(p,pObj)->mRequired; if ( p->pLibLut == NULL ) { Mpm_CutForEachLeafMap( p, pCut, pFanin, i ) pFanin->mRequired = Abc_MinInt( pFanin->mRequired, Required - MPM_UNIT_TIME ); } else { int * pDelays = p->pLibLut->pLutDelays[pCut->nLeaves]; Mpm_CutForEachLeafMap( p, pCut, pFanin, i ) pFanin->mRequired = Abc_MinInt( pFanin->mRequired, Required - pDelays[i] ); } } } } /**Function************************************************************* Synopsis [] Description [] SideEffects [] SeeAlso [] ***********************************************************************/ static inline Mpm_Man_t * Mpm_ManStart( Mig_Man_t * pMig, int nLutSize, int nNumCuts ) { Mpm_Man_t * p; assert( sizeof(Mpm_Inf_t) % sizeof(word) == 0 ); // aligned info to word boundary assert( Mpm_CutWordNum(32) < 32 ); // using 5 bits for word count assert( nNumCuts <= MPM_CUT_MAX ); Mig_ManSetRefs( pMig ); // alloc p = ABC_CALLOC( Mpm_Man_t, 1 ); p->pMig = pMig; p->nLutSize = nLutSize; p->nNumCuts = nNumCuts; // mapping attributes p->pMapObjs = ABC_CALLOC( Mpm_Obj_t, Mig_ManObjNum(pMig) ); Mpm_ManResetRequired( p ); // cuts p->pManCuts = Mmr_StepStart( Mpm_CutWordNum(nLutSize) ); Vec_IntGrow( &p->vFreeUnits, nNumCuts + 1 ); Mpm_UnitRecycleAll( p ); p->pObjPres = ABC_FALLOC( unsigned char, Mig_ManObjNum(pMig) ); p->pCutTemp = (Mpm_Cut_t *)ABC_CALLOC( word, Mpm_CutWordNum(nLutSize) ); Vec_StrGrow( &p->vObjShared, 32 ); p->pCutCmp = Mpm_CutCompareDelay; // start DSD manager p->pManDsd = NULL; return p; } static inline void Mpm_ManStop( Mpm_Man_t * p ) { ABC_FREE( p->pMapObjs ); Mmr_StepStop( p->pManCuts ); ABC_FREE( p->vFreeUnits.pArray ); ABC_FREE( p->vObjShared.pArray ); ABC_FREE( p->pCutCmp ); ABC_FREE( p->pObjPres ); ABC_FREE( p ); } /**Function************************************************************* Synopsis [] Description [] SideEffects [] SeeAlso [] ***********************************************************************/ void Mpm_ObjRecycleCuts( Mpm_Man_t * p, Mig_Obj_t * pObj, int fKeepBest ) { Mpm_Cut_t * pCut; int hCut, hNext, hList = Mpm_ObjCutList(p, pObj); Mpm_ObjForEachCutSafe( p, pObj, hCut, pCut, hNext ) if ( fKeepBest && hCut == hList ) pCut->hNext = 0; else Mpm_CutRecycle( p, hCut ); if ( !fKeepBest ) Mpm_ManObj(p, pObj)->iCutList = 0; } void Mpm_ObjCollectFaninsAndSigns( Mpm_Man_t * p, Mig_Obj_t * pObj, int i ) { Mpm_Cut_t * pCut; int hCut, nCuts = 0; Mpm_ObjForEachCut( p, pObj, hCut, pCut ) { p->pCuts[i][nCuts] = pCut; p->pSigns[i][nCuts++] = Mpm_CutGetSign( pCut ); } p->nCuts[i] = nCuts; } void Mpm_ObjUpdateCut( Mpm_Cut_t * pCut, int * pPerm, int nLeaves ) { int i; assert( nLeaves <= (int)pCut->nLeaves ); for ( i = 0; i < nLeaves; i++ ) pPerm[i] = Abc_LitNotCond( pCut->pLeaves[Abc_Lit2Var(pPerm[i])], Abc_LitIsCompl(pPerm[i]) ); memcpy( pCut->pLeaves, pPerm, sizeof(int) * nLeaves ); pCut->nLeaves = nLeaves; } /**Function************************************************************* Synopsis [Cut enumeration.] Description [] SideEffects [] SeeAlso [] ***********************************************************************/ int Mpm_ManDeriveCuts( Mpm_Man_t * p, Mig_Obj_t * pObj ) { int fUseFunc = 0; Mpm_Obj_t * pMapObj = Mpm_ManObj(p, pObj); Mpm_Cut_t * pCut0, * pCut1; Mig_Obj_t * pFanin; int i, c0, c1, iDsd0, iDsd1, ArrTime; // start storage with choice cuts p->nCutStore = 0; if ( Mig_ObjSiblId(pObj) ) Mpm_ObjTranslateCutsToStore( p, Mig_ObjSibl(pObj), pMapObj->mRequired ); // check that the best cut is ok if ( Mpm_ObjCutList(p, pObj) > 0 ) // cut list is assigned { Mpm_Cut_t * pCut = Mpm_ObjCutBest( p, pObj ); assert( pCut->hNext == 0 ); pMapObj->iCutList = 0; pMapObj->mTime = Mpm_CutGetArrTime(p, pCut); if ( pMapObj->mTime > pMapObj->mRequired ) printf( "Arrival time (%d) exceeds required time (%d) at object %d.\n", pMapObj->mTime, pMapObj->mRequired, Mig_ObjId(pObj) ); if ( p->nCutStore > 0 ) Mpm_ObjDeriveCut( p, pCut, NULL ); Mpm_ObjAddCutToStore( p, p->pCutTemp, pMapObj->mTime ); } // compute cuts if ( !Mig_ObjHasFanin(pObj, 2) ) { // compute signatures for fanin cuts Mig_ObjForEachFanin( pObj, pFanin, i ) Mpm_ObjCollectFaninsAndSigns( p, pFanin, i ); // check special cases if ( fUseFunc ) { pCut0 = p->pCuts[0][0]; pCut1 = p->pCuts[1][0]; if ( pCut0->iFunc < 2 || pCut1->iFunc < 2 ) { assert( Mig_ObjIsAnd(pObj) ); Mpm_UnitRecycleAll( p ); if ( Abc_LitNotCond(pCut0->iFunc, Mig_ObjFaninC0(pObj)) == 0 || Abc_LitNotCond(pCut1->iFunc, Mig_ObjFaninC1(pObj)) == 0 ) // set the resulting cut to 0 Mpm_ManObj(p, pObj)->iCutList = Mpm_CutCreateZero( p, pObj ); else if ( Abc_LitNotCond(pCut0->iFunc, Mig_ObjFaninC0(pObj)) == 1 ) // set the resulting set to be that of Fanin1 Mpm_ManObj(p, pObj)->iCutList = Mpm_CutCopySet( p, Mig_ObjFanin1(pObj), 0 ); else if ( Abc_LitNotCond(pCut1->iFunc, Mig_ObjFaninC1(pObj)) == 1 ) // set the resulting set to be that of Fanin0 Mpm_ManObj(p, pObj)->iCutList = Mpm_CutCopySet( p, Mig_ObjFanin0(pObj), 0 ); else assert( 0 ); goto finish; } } // go through cut pairs for ( c0 = 0; c0 < p->nCuts[0] && (pCut0 = p->pCuts[0][c0]); c0++ ) for ( c1 = 0; c1 < p->nCuts[1] && (pCut1 = p->pCuts[1][c1]); c1++ ) { if ( Abc_TtCountOnes(p->pSigns[0][c0] | p->pSigns[1][c1]) > p->nLutSize ) continue; iDsd0 = Abc_LitNotCond( pCut0->iFunc, Mig_ObjFaninC0(pObj) ); iDsd1 = Abc_LitNotCond( pCut1->iFunc, Mig_ObjFaninC1(pObj) ); if ( fUseFunc ) { if ( iDsd0 > iDsd1 ) { ABC_SWAP( int, iDsd0, iDsd1 ); ABC_SWAP( Mpm_Cut_t *, pCut0, pCut1 ); } } else { if ( pCut0->nLeaves < pCut1->nLeaves ) ABC_SWAP( Mpm_Cut_t *, pCut0, pCut1 ); } if ( !Mpm_ObjDeriveCut( p, pCut0, pCut1 ) ) continue; ArrTime = Mpm_CutGetArrTime( p, p->pCutTemp ); if ( ArrTime > pMapObj->mRequired ) continue; // compute cut function if ( fUseFunc ) { extern int Mpm_FuncCompute( void * p, int iDsd0, int iDsd1, Vec_Str_t * vShared, int * pPerm, int * pnLeaves ); int nLeavesOld = p->pCutTemp->nLeaves; int nLeaves = p->pCutTemp->nLeaves; // compute functionality and filter cuts dominated by support-reduced cuts p->pCutTemp->iFunc = Mpm_FuncCompute( p->pManDsd, iDsd0, iDsd1, &p->vObjShared, p->pPerm, &nLeaves ); Mpm_ObjUpdateCut( p->pCutTemp, p->pPerm, nLeaves ); // consider filtering based on functionality if ( nLeaves == 0 ) // derived const cut { Mpm_UnitRecycleAll( p ); Mpm_ManObj(p, pObj)->iCutList = Mpm_CutCreateZero( p, pObj ); goto finish; } if ( nLeaves == 1 ) // derived unit cut { Mpm_UnitRecycleAll( p ); pFanin = Mig_ManObj( p->pMig, Abc_Lit2Var(p->pCutTemp->pLeaves[0]) ); Mpm_ManObj(p, pObj)->iCutList = Mpm_CutCopySet( p, pFanin, Abc_LitIsCompl(p->pCutTemp->pLeaves[0]) ); goto finish; } if ( nLeaves < nLeavesOld ) // reduced support of the cut { ArrTime = Mpm_CutGetArrTime( p, p->pCutTemp ); if ( ArrTime > pMapObj->mRequired ) continue; } } Mpm_ObjAddCutToStore( p, p->pCutTemp, ArrTime ); } } else assert( 0 ); // transform internal storage into cuts Mpm_ObjTranslateCutsFromStore( p, pObj, Mig_ObjRefNum(pObj) > 0 ); finish: // dereference cuts Mig_ObjForEachFanin( pObj, pFanin, i ) if ( Mpm_ObjRefDec( p, pFanin ) == 0 ) Mpm_ObjRecycleCuts( p, pFanin, 1 ); // reference node Mpm_ManObj(p, pObj)->nRefs = Mig_ObjRefNum(pObj); return 1; } /**Function************************************************************* Synopsis [Cut computation experiment.] Description [] SideEffects [] SeeAlso [] ***********************************************************************/ void Mpm_ManPerform( Mpm_Man_t * p ) { Mig_Obj_t * pObj; abctime clk = Abc_Clock(); int i; Mig_ManForEachCi( p->pMig, pObj, i ) Mpm_ManObj(p, pObj)->iCutList = Mpm_CutCreateUnit( p, pObj ); Mig_ManForEachNode( p->pMig, pObj ) Mpm_ManDeriveCuts( p, pObj ); Abc_PrintTime( 1, "Time", Abc_Clock() - clk ); } void Mpm_ManPerformTest( Mig_Man_t * pMig ) { Mpm_Man_t * p; p = Mpm_ManStart( pMig, 6, 10 ); Mpm_ManPerform( p ); Mpm_ManStop( p ); } //////////////////////////////////////////////////////////////////////// /// END OF FILE /// //////////////////////////////////////////////////////////////////////// ABC_NAMESPACE_IMPL_END