/**Function************************************************************* Synopsis [Starts the AIG manager.] Description [] SideEffects [] SeeAlso [] ***********************************************************************/ Ivy_Man_t * Ivy_ManStart() { Ivy_Man_t * p; // start the manager p = ALLOC( Ivy_Man_t, 1 ); memset( p, 0, sizeof(Ivy_Man_t) ); // perform initializations p->Ghost.Id = -1; p->nTravIds = 1; p->fCatchExor = 1; // allocate arrays for nodes p->vPis = Vec_PtrAlloc( 100 ); p->vPos = Vec_PtrAlloc( 100 ); p->vBufs = Vec_PtrAlloc( 100 ); p->vObjs = Vec_PtrAlloc( 100 ); // prepare the internal memory manager Ivy_ManStartMemory( p ); // create the constant node p->pConst1 = Ivy_ManFetchMemory( p ); p->pConst1->fPhase = 1; Vec_PtrPush( p->vObjs, p->pConst1 ); p->nCreated = 1; // start the table p->nTableSize = 10007; p->pTable = ALLOC( int, p->nTableSize ); memset( p->pTable, 0, sizeof(int) * p->nTableSize ); return p; }
/**Function************************************************************* Synopsis [Create the new node assuming it does not exist.] Description [] SideEffects [] SeeAlso [] ***********************************************************************/ Ivy_Obj_t * Ivy_ObjCreate( Ivy_Man_t * p, Ivy_Obj_t * pGhost ) { Ivy_Obj_t * pObj; assert( !Ivy_IsComplement(pGhost) ); assert( Ivy_ObjIsGhost(pGhost) ); assert( Ivy_TableLookup(p, pGhost) == NULL ); // get memory for the new object pObj = Ivy_ManFetchMemory( p ); assert( Ivy_ObjIsNone(pObj) ); pObj->Id = Vec_PtrSize(p->vObjs); Vec_PtrPush( p->vObjs, pObj ); // add basic info (fanins, compls, type, init) pObj->Type = pGhost->Type; pObj->Init = pGhost->Init; // add connections Ivy_ObjConnect( p, pObj, pGhost->pFanin0, pGhost->pFanin1 ); // compute level if ( Ivy_ObjIsNode(pObj) ) pObj->Level = Ivy_ObjLevelNew(pObj); else if ( Ivy_ObjIsLatch(pObj) ) pObj->Level = 0; else if ( Ivy_ObjIsOneFanin(pObj) ) pObj->Level = Ivy_ObjFanin0(pObj)->Level; else if ( !Ivy_ObjIsPi(pObj) ) assert( 0 ); // create phase if ( Ivy_ObjIsNode(pObj) ) pObj->fPhase = Ivy_ObjFaninPhase(Ivy_ObjChild0(pObj)) & Ivy_ObjFaninPhase(Ivy_ObjChild1(pObj)); else if ( Ivy_ObjIsOneFanin(pObj) ) pObj->fPhase = Ivy_ObjFaninPhase(Ivy_ObjChild0(pObj)); // set the fail TFO flag if ( Ivy_ObjIsNode(pObj) ) pObj->fFailTfo = Ivy_ObjFanin0(pObj)->fFailTfo | Ivy_ObjFanin1(pObj)->fFailTfo; // mark the fanins in a special way if the node is EXOR if ( Ivy_ObjIsExor(pObj) ) { Ivy_ObjFanin0(pObj)->fExFan = 1; Ivy_ObjFanin1(pObj)->fExFan = 1; } // add PIs/POs to the arrays if ( Ivy_ObjIsPi(pObj) ) Vec_PtrPush( p->vPis, pObj ); else if ( Ivy_ObjIsPo(pObj) ) Vec_PtrPush( p->vPos, pObj ); // else if ( Ivy_ObjIsBuf(pObj) ) // Vec_PtrPush( p->vBufs, pObj ); if ( p->vRequired && Vec_IntSize(p->vRequired) <= pObj->Id ) Vec_IntFillExtra( p->vRequired, 2 * Vec_IntSize(p->vRequired), 1000000 ); // update node counters of the manager p->nObjs[Ivy_ObjType(pObj)]++; p->nCreated++; // printf( "Adding %sAIG node: ", p->pHaig==NULL? "H":" " ); // Ivy_ObjPrintVerbose( p, pObj, p->pHaig==NULL ); // printf( "\n" ); // if HAIG is defined, create a corresponding node if ( p->pHaig ) Ivy_ManHaigCreateObj( p, pObj ); return pObj; }