/**Function*************************************************************
Synopsis [Deletes the manager.]
Description []
SideEffects []
SeeAlso []
***********************************************************************/
void ABC_ReleaseManager( ABC_Manager mng )
{
CSAT_Target_ResultT * p_res = ABC_Get_Target_Result( mng,0 );
ABC_TargetResFree(p_res);
if ( mng->tNode2Name ) stmm_free_table( mng->tNode2Name );
if ( mng->tName2Node ) stmm_free_table( mng->tName2Node );
if ( mng->pMmNames ) Mem_FlexStop( mng->pMmNames, 0 );
if ( mng->pNtk ) Abc_NtkDelete( mng->pNtk );
if ( mng->pTarget ) Abc_NtkDelete( mng->pTarget );
if ( mng->vNodes ) Vec_PtrFree( mng->vNodes );
if ( mng->vValues ) Vec_IntFree( mng->vValues );
ABC_FREE( mng->pDumpFileName );
ABC_FREE( mng );
Abc_Stop();
}
/**Function*************************************************************
Synopsis [Stops the manager.]
Description []
SideEffects []
SeeAlso []
***********************************************************************/
void Super2_ManStop( Super2_Man_t * pMan )
{
Extra_MmFixedStop( pMan->pMem );
stmm_free_table( pMan->tTable );
ABC_FREE( pMan );
}
/**Function*************************************************************
Synopsis [Transfers names from one netlist to the other.]
Description []
SideEffects []
SeeAlso []
***********************************************************************/
void Abc_NtkDress( Abc_Ntk_t * pNtkLogic, char * pFileName, int fVerbose )
{
Abc_Ntk_t * pNtkOrig, * pNtkLogicOrig;
Abc_Ntk_t * pMiter, * pMiterFraig;
stmm_table * tMapping;
assert( Abc_NtkIsLogic(pNtkLogic) );
// get the original netlist
pNtkOrig = Io_ReadNetlist( pFileName, Io_ReadFileType(pFileName), 1 );
if ( pNtkOrig == NULL )
return;
assert( Abc_NtkIsNetlist(pNtkOrig) );
Abc_NtkCleanCopy(pNtkLogic);
Abc_NtkCleanCopy(pNtkOrig);
// convert it into the logic network
pNtkLogicOrig = Abc_NtkToLogic( pNtkOrig );
// check that the networks have the same PIs/POs/latches
if ( !Abc_NtkCompareSignals( pNtkLogic, pNtkLogicOrig, 1, 1 ) )
{
Abc_NtkDelete( pNtkOrig );
Abc_NtkDelete( pNtkLogicOrig );
return;
}
// convert the current logic network into an AIG
pMiter = Abc_NtkStrash( pNtkLogic, 1, 0, 0 );
// convert it into the AIG and make the netlist point to the AIG
Abc_NtkAppend( pMiter, pNtkLogicOrig, 1 );
Abc_NtkTransferCopy( pNtkOrig );
Abc_NtkDelete( pNtkLogicOrig );
if ( fVerbose )
{
printf( "After mitering:\n" );
printf( "Logic: Nodes = %5d. Copy = %5d. \n", Abc_NtkNodeNum(pNtkLogic), Abc_NtkCountCopy(pNtkLogic) );
printf( "Orig: Nodes = %5d. Copy = %5d. \n", Abc_NtkNodeNum(pNtkOrig), Abc_NtkCountCopy(pNtkOrig) );
}
// fraig the miter (miter nodes point to the fraiged miter)
pMiterFraig = Abc_NtkIvyFraig( pMiter, 100, 1, 0, 1, 0 );
// make netlists point to the fraiged miter
Abc_NtkTransferCopy( pNtkLogic );
Abc_NtkTransferCopy( pNtkOrig );
Abc_NtkDelete( pMiter );
if ( fVerbose )
{
printf( "After fraiging:\n" );
printf( "Logic: Nodes = %5d. Copy = %5d. \n", Abc_NtkNodeNum(pNtkLogic), Abc_NtkCountCopy(pNtkLogic) );
printf( "Orig: Nodes = %5d. Copy = %5d. \n", Abc_NtkNodeNum(pNtkOrig), Abc_NtkCountCopy(pNtkOrig) );
}
// derive mapping from the fraiged nodes into their prototype nodes in the original netlist
tMapping = Abc_NtkDressDeriveMapping( pNtkOrig );
// transfer the names to the new netlist
Abc_NtkDressTransferNames( pNtkLogic, tMapping, fVerbose );
// clean up
stmm_free_table( tMapping );
Abc_NtkDelete( pMiterFraig );
Abc_NtkDelete( pNtkOrig );
}
/**Function*************************************************************
Synopsis [Implements the given retiming on the sequential AIG.]
Description [Returns 0 of initial state computation fails.]
SideEffects []
SeeAlso []
***********************************************************************/
int Seq_NtkImplementRetimingBackward( Abc_Ntk_t * pNtk, Vec_Ptr_t * vMoves, int fVerbose )
{
Seq_RetEdge_t RetEdge;
stmm_table * tTable;
stmm_generator * gen;
Vec_Int_t * vValues;
Abc_Ntk_t * pNtkProb, * pNtkMiter, * pNtkCnf;
Abc_Obj_t * pNode, * pNodeNew;
int * pModel, RetValue, i, clk;
// return if the retiming is trivial
if ( Vec_PtrSize(vMoves) == 0 )
return 1;
// create the network for the initial state computation
// start the table and the array of PO values
pNtkProb = Abc_NtkAlloc( ABC_NTK_LOGIC, ABC_FUNC_SOP, 1 );
tTable = stmm_init_table( stmm_numcmp, stmm_numhash );
vValues = Vec_IntAlloc( 100 );
// perform the backward moves and build the network for initial state computation
RetValue = 0;
Vec_PtrForEachEntry( vMoves, pNode, i )
RetValue |= Abc_ObjRetimeBackward( pNode, pNtkProb, tTable, vValues );
// add the PIs corresponding to the white spots
stmm_foreach_item( tTable, gen, (char **)&RetEdge, (char **)&pNodeNew )
Abc_ObjAddFanin( pNodeNew, Abc_NtkCreatePi(pNtkProb) );
// add the PI/PO names
Abc_NtkAddDummyPiNames( pNtkProb );
Abc_NtkAddDummyPoNames( pNtkProb );
Abc_NtkAddDummyAssertNames( pNtkProb );
// make sure everything is okay with the network structure
if ( !Abc_NtkDoCheck( pNtkProb ) )
{
printf( "Seq_NtkImplementRetimingBackward: The internal network check has failed.\n" );
Abc_NtkRetimeSetInitialValues( pNtk, tTable, NULL );
Abc_NtkDelete( pNtkProb );
stmm_free_table( tTable );
Vec_IntFree( vValues );
return 0;
}
// check if conflict is found
if ( RetValue )
{
printf( "Seq_NtkImplementRetimingBackward: A top level conflict is detected. DC latch values are used.\n" );
Abc_NtkRetimeSetInitialValues( pNtk, tTable, NULL );
Abc_NtkDelete( pNtkProb );
stmm_free_table( tTable );
Vec_IntFree( vValues );
return 0;
}
// get the miter cone
pNtkMiter = Abc_NtkCreateTarget( pNtkProb, pNtkProb->vCos, vValues );
Abc_NtkDelete( pNtkProb );
Vec_IntFree( vValues );
if ( fVerbose )
printf( "The number of ANDs in the AIG = %5d.\n", Abc_NtkNodeNum(pNtkMiter) );
// transform the miter into a logic network for efficient CNF construction
// pNtkCnf = Abc_Ntk_Renode( pNtkMiter, 0, 100, 1, 0, 0 );
// Abc_NtkDelete( pNtkMiter );
pNtkCnf = pNtkMiter;
// solve the miter
clk = clock();
// RetValue = Abc_NtkMiterSat_OldAndRusty( pNtkCnf, 30, 0 );
RetValue = Abc_NtkMiterSat( pNtkCnf, (sint64)500000, (sint64)50000000, 0, 0, NULL, NULL );
if ( fVerbose )
if ( clock() - clk > 100 )
{
PRT( "SAT solving time", clock() - clk );
}
pModel = pNtkCnf->pModel; pNtkCnf->pModel = NULL;
Abc_NtkDelete( pNtkCnf );
// analyze the result
if ( RetValue == -1 || RetValue == 1 )
{
Abc_NtkRetimeSetInitialValues( pNtk, tTable, NULL );
if ( RetValue == 1 )
printf( "Seq_NtkImplementRetimingBackward: The problem is unsatisfiable. DC latch values are used.\n" );
else
printf( "Seq_NtkImplementRetimingBackward: The SAT problem timed out. DC latch values are used.\n" );
stmm_free_table( tTable );
return 0;
}
// set the values of the latches
Abc_NtkRetimeSetInitialValues( pNtk, tTable, pModel );
stmm_free_table( tTable );
free( pModel );
return 1;
}
