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Diffstat (limited to 'src/misc/hop/hopObj.c')
| -rw-r--r-- | src/misc/hop/hopObj.c | 271 |
1 files changed, 271 insertions, 0 deletions
diff --git a/src/misc/hop/hopObj.c b/src/misc/hop/hopObj.c new file mode 100644 index 00000000..c8e70dd3 --- /dev/null +++ b/src/misc/hop/hopObj.c @@ -0,0 +1,271 @@ +/**CFile**************************************************************** + + FileName [hopObj.c] + + SystemName [ABC: Logic synthesis and verification system.] + + PackageName [Minimalistic And-Inverter Graph package.] + + Synopsis [Adding/removing objects.] + + Author [Alan Mishchenko] + + Affiliation [UC Berkeley] + + Date [Ver. 1.0. Started - May 11, 2006.] + + Revision [$Id: hopObj.c,v 1.00 2006/05/11 00:00:00 alanmi Exp $] + +***********************************************************************/ + +#include "hop.h" + +//////////////////////////////////////////////////////////////////////// +/// DECLARATIONS /// +//////////////////////////////////////////////////////////////////////// + +//////////////////////////////////////////////////////////////////////// +/// FUNCTION DEFINITIONS /// +//////////////////////////////////////////////////////////////////////// + +/**Function************************************************************* + + Synopsis [Creates primary input.] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +Hop_Obj_t * Hop_ObjCreatePi( Hop_Man_t * p ) +{ + Hop_Obj_t * pObj; + pObj = Hop_ManFetchMemory( p ); + pObj->Type = AIG_PI; + Vec_PtrPush( p->vPis, pObj ); + p->nObjs[AIG_PI]++; + return pObj; +} + +/**Function************************************************************* + + Synopsis [Creates primary output with the given driver.] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +Hop_Obj_t * Hop_ObjCreatePo( Hop_Man_t * p, Hop_Obj_t * pDriver ) +{ + Hop_Obj_t * pObj; + pObj = Hop_ManFetchMemory( p ); + pObj->Type = AIG_PO; + Vec_PtrPush( p->vPos, pObj ); + // add connections + pObj->pFanin0 = pDriver; + if ( p->fRefCount ) + Hop_ObjRef( Hop_Regular(pDriver) ); + else + pObj->nRefs = Hop_ObjLevel( Hop_Regular(pDriver) ); + // set the phase + pObj->fPhase = Hop_ObjFaninPhase(pDriver); + // update node counters of the manager + p->nObjs[AIG_PO]++; + return pObj; +} + +/**Function************************************************************* + + Synopsis [Create the new node assuming it does not exist.] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +Hop_Obj_t * Hop_ObjCreate( Hop_Man_t * p, Hop_Obj_t * pGhost ) +{ + Hop_Obj_t * pObj; + assert( !Hop_IsComplement(pGhost) ); + assert( Hop_ObjIsNode(pGhost) ); + assert( pGhost == &p->Ghost ); + // get memory for the new object + pObj = Hop_ManFetchMemory( p ); + pObj->Type = pGhost->Type; + // add connections + Hop_ObjConnect( p, pObj, pGhost->pFanin0, pGhost->pFanin1 ); + // update node counters of the manager + p->nObjs[Hop_ObjType(pObj)]++; + assert( pObj->pData == NULL ); + return pObj; +} + +/**Function************************************************************* + + Synopsis [Connect the object to the fanin.] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +void Hop_ObjConnect( Hop_Man_t * p, Hop_Obj_t * pObj, Hop_Obj_t * pFan0, Hop_Obj_t * pFan1 ) +{ + assert( !Hop_IsComplement(pObj) ); + assert( Hop_ObjIsNode(pObj) ); + // add the first fanin + pObj->pFanin0 = pFan0; + pObj->pFanin1 = pFan1; + // increment references of the fanins and add their fanouts + if ( p->fRefCount ) + { + if ( pFan0 != NULL ) + Hop_ObjRef( Hop_ObjFanin0(pObj) ); + if ( pFan1 != NULL ) + Hop_ObjRef( Hop_ObjFanin1(pObj) ); + } + else + pObj->nRefs = Hop_ObjLevelNew( pObj ); + // set the phase + pObj->fPhase = Hop_ObjFaninPhase(pFan0) & Hop_ObjFaninPhase(pFan1); + // add the node to the structural hash table + Hop_TableInsert( p, pObj ); +} + +/**Function************************************************************* + + Synopsis [Connect the object to the fanin.] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +void Hop_ObjDisconnect( Hop_Man_t * p, Hop_Obj_t * pObj ) +{ + assert( !Hop_IsComplement(pObj) ); + assert( Hop_ObjIsNode(pObj) ); + // remove connections + if ( pObj->pFanin0 != NULL ) + Hop_ObjDeref(Hop_ObjFanin0(pObj)); + if ( pObj->pFanin1 != NULL ) + Hop_ObjDeref(Hop_ObjFanin1(pObj)); + // remove the node from the structural hash table + Hop_TableDelete( p, pObj ); + // add the first fanin + pObj->pFanin0 = NULL; + pObj->pFanin1 = NULL; +} + +/**Function************************************************************* + + Synopsis [Deletes the node.] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +void Hop_ObjDelete( Hop_Man_t * p, Hop_Obj_t * pObj ) +{ + assert( !Hop_IsComplement(pObj) ); + assert( !Hop_ObjIsTerm(pObj) ); + assert( Hop_ObjRefs(pObj) == 0 ); + // update node counters of the manager + p->nObjs[pObj->Type]--; + p->nDeleted++; + // remove connections + Hop_ObjDisconnect( p, pObj ); + // remove PIs/POs from the arrays + if ( Hop_ObjIsPi(pObj) ) + Vec_PtrRemove( p->vPis, pObj ); + // free the node + Hop_ManRecycleMemory( p, pObj ); +} + +/**Function************************************************************* + + Synopsis [Deletes the MFFC of the node.] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +void Hop_ObjDelete_rec( Hop_Man_t * p, Hop_Obj_t * pObj ) +{ + Hop_Obj_t * pFanin0, * pFanin1; + assert( !Hop_IsComplement(pObj) ); + if ( Hop_ObjIsConst1(pObj) || Hop_ObjIsPi(pObj) ) + return; + assert( Hop_ObjIsNode(pObj) ); + pFanin0 = Hop_ObjFanin0(pObj); + pFanin1 = Hop_ObjFanin1(pObj); + Hop_ObjDelete( p, pObj ); + if ( pFanin0 && !Hop_ObjIsNone(pFanin0) && Hop_ObjRefs(pFanin0) == 0 ) + Hop_ObjDelete_rec( p, pFanin0 ); + if ( pFanin1 && !Hop_ObjIsNone(pFanin1) && Hop_ObjRefs(pFanin1) == 0 ) + Hop_ObjDelete_rec( p, pFanin1 ); +} + +/**Function************************************************************* + + Synopsis [Returns the representative of the node.] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +Hop_Obj_t * Hop_ObjRepr( Hop_Obj_t * pObj ) +{ + assert( !Hop_IsComplement(pObj) ); + if ( pObj->pData == NULL || pObj->pData == pObj ) + return pObj; + return Hop_ObjRepr( pObj->pData ); +} + +/**Function************************************************************* + + Synopsis [Sets an equivalence relation between the nodes.] + + Description [Makes the representative of pNew point to the representaive of pOld.] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +void Hop_ObjCreateChoice( Hop_Obj_t * pOld, Hop_Obj_t * pNew ) +{ + Hop_Obj_t * pOldRepr; + Hop_Obj_t * pNewRepr; + assert( pOld != NULL && pNew != NULL ); + pOldRepr = Hop_ObjRepr(pOld); + pNewRepr = Hop_ObjRepr(pNew); + if ( pNewRepr != pOldRepr ) + pNewRepr->pData = pOldRepr; +} + +//////////////////////////////////////////////////////////////////////// +/// END OF FILE /// +//////////////////////////////////////////////////////////////////////// + + |