/**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;
}
