diff options
Diffstat (limited to 'src/base/seq/seqUtil.c')
| -rw-r--r-- | src/base/seq/seqUtil.c | 602 |
1 files changed, 0 insertions, 602 deletions
diff --git a/src/base/seq/seqUtil.c b/src/base/seq/seqUtil.c deleted file mode 100644 index 137151e2..00000000 --- a/src/base/seq/seqUtil.c +++ /dev/null @@ -1,602 +0,0 @@ -/**CFile**************************************************************** - - FileName [seqUtil.c] - - SystemName [ABC: Logic synthesis and verification system.] - - PackageName [Construction and manipulation of sequential AIGs.] - - Synopsis [Various utilities working with sequential AIGs.] - - Author [Alan Mishchenko] - - Affiliation [UC Berkeley] - - Date [Ver. 1.0. Started - June 20, 2005.] - - Revision [$Id: seqUtil.c,v 1.00 2005/06/20 00:00:00 alanmi Exp $] - -***********************************************************************/ - -#include "seqInt.h" - -ABC_NAMESPACE_IMPL_START - - -//////////////////////////////////////////////////////////////////////// -/// DECLARATIONS /// -//////////////////////////////////////////////////////////////////////// - -//////////////////////////////////////////////////////////////////////// -/// FUNCTION DEFINITIONS /// -//////////////////////////////////////////////////////////////////////// - -/**Function************************************************************* - - Synopsis [Returns the maximum latch number on any of the fanouts.] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -int Seq_NtkLevelMax( Abc_Ntk_t * pNtk ) -{ - Abc_Obj_t * pNode; - int i, Result; - assert( Abc_NtkIsSeq(pNtk) ); - Result = 0; - Abc_NtkForEachPo( pNtk, pNode, i ) - { - pNode = Abc_ObjFanin0(pNode); - if ( Result < (int)pNode->Level ) - Result = pNode->Level; - } - Abc_SeqForEachCutsetNode( pNtk, pNode, i ) - { - if ( Result < (int)pNode->Level ) - Result = pNode->Level; - } - return Result; -} - -/**Function************************************************************* - - Synopsis [Returns the maximum latch number on any of the fanouts.] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -int Seq_ObjFanoutLMax( Abc_Obj_t * pObj ) -{ - Abc_Obj_t * pFanout; - int i, nLatchCur, nLatchRes; - if ( Abc_ObjFanoutNum(pObj) == 0 ) - return 0; - nLatchRes = 0; - Abc_ObjForEachFanout( pObj, pFanout, i ) - { - nLatchCur = Seq_ObjFanoutL(pObj, pFanout); - if ( nLatchRes < nLatchCur ) - nLatchRes = nLatchCur; - } - assert( nLatchRes >= 0 ); - return nLatchRes; -} - -/**Function************************************************************* - - Synopsis [Returns the minimum latch number on any of the fanouts.] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -int Seq_ObjFanoutLMin( Abc_Obj_t * pObj ) -{ - Abc_Obj_t * pFanout; - int i, nLatchCur, nLatchRes; - if ( Abc_ObjFanoutNum(pObj) == 0 ) - return 0; - nLatchRes = ABC_INFINITY; - Abc_ObjForEachFanout( pObj, pFanout, i ) - { - nLatchCur = Seq_ObjFanoutL(pObj, pFanout); - if ( nLatchRes > nLatchCur ) - nLatchRes = nLatchCur; - } - assert( nLatchRes < ABC_INFINITY ); - return nLatchRes; -} - -/**Function************************************************************* - - Synopsis [Returns the sum of latches on the fanout edges.] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -int Seq_ObjFanoutLSum( Abc_Obj_t * pObj ) -{ - Abc_Obj_t * pFanout; - int i, nSum = 0; - Abc_ObjForEachFanout( pObj, pFanout, i ) - nSum += Seq_ObjFanoutL(pObj, pFanout); - return nSum; -} - -/**Function************************************************************* - - Synopsis [Returns the sum of latches on the fanin edges.] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -int Seq_ObjFaninLSum( Abc_Obj_t * pObj ) -{ - Abc_Obj_t * pFanin; - int i, nSum = 0; - Abc_ObjForEachFanin( pObj, pFanin, i ) - nSum += Seq_ObjFaninL(pObj, i); - return nSum; -} - -/**Function************************************************************* - - Synopsis [Generates the printable edge label with the initial state.] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -char * Seq_ObjFaninGetInitPrintable( Abc_Obj_t * pObj, int Edge ) -{ - static char Buffer[1000]; - Abc_InitType_t Init; - int nLatches, i; - nLatches = Seq_ObjFaninL( pObj, Edge ); - for ( i = 0; i < nLatches; i++ ) - { - Init = Seq_LatInit( Seq_NodeGetLat(pObj, Edge, i) ); - if ( Init == ABC_INIT_NONE ) - Buffer[i] = '_'; - else if ( Init == ABC_INIT_ZERO ) - Buffer[i] = '0'; - else if ( Init == ABC_INIT_ONE ) - Buffer[i] = '1'; - else if ( Init == ABC_INIT_DC ) - Buffer[i] = 'x'; - else assert( 0 ); - } - Buffer[nLatches] = 0; - return Buffer; -} - -/**Function************************************************************* - - Synopsis [Sets the given value to all the latches of the edge.] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -void Seq_NodeLatchSetValues( Abc_Obj_t * pObj, int Edge, Abc_InitType_t Init ) -{ - Seq_Lat_t * pLat, * pRing; - int c; - pRing = Seq_NodeGetRing(pObj, Edge); - if ( pRing == NULL ) - return; - for ( c = 0, pLat = pRing; !c || pLat != pRing; c++, pLat = pLat->pNext ) - Seq_LatSetInit( pLat, Init ); -} - -/**Function************************************************************* - - Synopsis [Sets the given value to all the latches of the edge.] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -void Seq_NtkLatchSetValues( Abc_Ntk_t * pNtk, Abc_InitType_t Init ) -{ - Abc_Obj_t * pObj; - int i; - assert( Abc_NtkIsSeq( pNtk ) ); - Abc_NtkForEachPo( pNtk, pObj, i ) - Seq_NodeLatchSetValues( pObj, 0, Init ); - Abc_NtkForEachNode( pNtk, pObj, i ) - { - Seq_NodeLatchSetValues( pObj, 0, Init ); - Seq_NodeLatchSetValues( pObj, 1, Init ); - } -} - - -/**Function************************************************************* - - Synopsis [Counts the number of latches in the sequential AIG.] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -int Seq_NtkLatchNum( Abc_Ntk_t * pNtk ) -{ - Abc_Obj_t * pObj; - int i, Counter; - assert( Abc_NtkIsSeq( pNtk ) ); - Counter = 0; - Abc_NtkForEachNode( pNtk, pObj, i ) - Counter += Seq_ObjFaninLSum( pObj ); - Abc_NtkForEachPo( pNtk, pObj, i ) - Counter += Seq_ObjFaninLSum( pObj ); - return Counter; -} - -/**Function************************************************************* - - Synopsis [Counts the number of latches in the sequential AIG.] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -int Seq_NtkLatchNumMax( Abc_Ntk_t * pNtk ) -{ - Abc_Obj_t * pObj; - int i, Max, Cur; - assert( Abc_NtkIsSeq( pNtk ) ); - Max = 0; - Abc_AigForEachAnd( pNtk, pObj, i ) - { - Cur = Seq_ObjFaninLMax( pObj ); - if ( Max < Cur ) - Max = Cur; - } - Abc_NtkForEachPo( pNtk, pObj, i ) - { - Cur = Seq_ObjFaninL0( pObj ); - if ( Max < Cur ) - Max = Cur; - } - return Max; -} - -/**Function************************************************************* - - Synopsis [Counts the number of latches in the sequential AIG.] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -int Seq_NtkLatchNumShared( Abc_Ntk_t * pNtk ) -{ - Abc_Obj_t * pObj; - int i, Counter; - assert( Abc_NtkIsSeq( pNtk ) ); - Counter = 0; - Abc_NtkForEachPi( pNtk, pObj, i ) - Counter += Seq_ObjFanoutLMax( pObj ); - Abc_NtkForEachNode( pNtk, pObj, i ) - Counter += Seq_ObjFanoutLMax( pObj ); - return Counter; -} - -/**Function************************************************************* - - Synopsis [Counts the number of latches in the sequential AIG.] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -void Seq_ObjLatchGetInitNums( Abc_Obj_t * pObj, int Edge, int * pInits ) -{ - Abc_InitType_t Init; - int nLatches, i; - nLatches = Seq_ObjFaninL( pObj, Edge ); - for ( i = 0; i < nLatches; i++ ) - { - Init = Seq_NodeGetInitOne( pObj, Edge, i ); - pInits[Init]++; - } -} - -/**Function************************************************************* - - Synopsis [Counts the number of latches in the sequential AIG.] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -void Seq_NtkLatchGetInitNums( Abc_Ntk_t * pNtk, int * pInits ) -{ - Abc_Obj_t * pObj; - int i; - assert( Abc_NtkIsSeq( pNtk ) ); - for ( i = 0; i < 4; i++ ) - pInits[i] = 0; - Abc_NtkForEachPo( pNtk, pObj, i ) - Seq_ObjLatchGetInitNums( pObj, 0, pInits ); - Abc_NtkForEachNode( pNtk, pObj, i ) - { - if ( Abc_ObjFaninNum(pObj) > 0 ) - Seq_ObjLatchGetInitNums( pObj, 0, pInits ); - if ( Abc_ObjFaninNum(pObj) > 1 ) - Seq_ObjLatchGetInitNums( pObj, 1, pInits ); - } -} - -/**Function************************************************************* - - Synopsis [Report nodes with equal fanins.] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -int Seq_NtkLatchGetEqualFaninNum( Abc_Ntk_t * pNtk ) -{ - Abc_Obj_t * pObj; - int i, Counter; - assert( Abc_NtkIsSeq( pNtk ) ); - Counter = 0; - Abc_AigForEachAnd( pNtk, pObj, i ) - if ( Abc_ObjFaninId0(pObj) == Abc_ObjFaninId1(pObj) ) - Counter++; - if ( Counter ) - printf( "The number of nodes with equal fanins = %d.\n", Counter ); - return Counter; -} - -/**Function************************************************************* - - Synopsis [Returns the maximum latch number on any of the fanouts.] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -int Seq_NtkCountNodesAboveLimit( Abc_Ntk_t * pNtk, int Limit ) -{ - Abc_Obj_t * pNode; - int i, Counter; - assert( !Abc_NtkIsSeq(pNtk) ); - Counter = 0; - Abc_NtkForEachNode( pNtk, pNode, i ) - if ( Abc_ObjFaninNum(pNode) > Limit ) - Counter++; - return Counter; -} - -/**Function************************************************************* - - Synopsis [Computes area flows.] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -int Seq_MapComputeAreaFlows( Abc_Ntk_t * pNtk, int fVerbose ) -{ - Abc_Seq_t * p = pNtk->pManFunc; - Abc_Obj_t * pObj; - float AFlow; - int i, c; - - assert( Abc_NtkIsSeq(pNtk) ); - - Vec_IntFill( p->vAFlows, p->nSize, Abc_Float2Int( (float)0.0 ) ); - - // update all values iteratively - for ( c = 0; c < 7; c++ ) - { - Abc_AigForEachAnd( pNtk, pObj, i ) - { - AFlow = (float)1.0 + Seq_NodeGetFlow( Abc_ObjFanin0(pObj) ) + Seq_NodeGetFlow( Abc_ObjFanin1(pObj) ); - AFlow /= Abc_ObjFanoutNum(pObj); - pObj->pNext = (void *)Abc_Float2Int( AFlow ); - } - Abc_AigForEachAnd( pNtk, pObj, i ) - { - AFlow = Abc_Int2Float( (int)pObj->pNext ); - pObj->pNext = NULL; - Seq_NodeSetFlow( pObj, AFlow ); - -// printf( "%5d : %6.1f\n", pObj->Id, Seq_NodeGetFlow(pObj) ); - } -// printf( "\n" ); - } - return 1; -} - - -/**Function************************************************************* - - Synopsis [Collects all the internal nodes reachable from POs.] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -void Seq_NtkReachNodesFromPos_rec( Abc_Obj_t * pAnd, Vec_Ptr_t * vNodes ) -{ - // skip if this is a non-PI node - if ( !Abc_AigNodeIsAnd(pAnd) ) - return; - // skip a visited node - if ( Abc_NodeIsTravIdCurrent(pAnd) ) - return; - Abc_NodeSetTravIdCurrent(pAnd); - // visit the fanin nodes - Seq_NtkReachNodesFromPos_rec( Abc_ObjFanin0(pAnd), vNodes ); - Seq_NtkReachNodesFromPos_rec( Abc_ObjFanin1(pAnd), vNodes ); - // add this node - Vec_PtrPush( vNodes, pAnd ); -} - -/**Function************************************************************* - - Synopsis [Collects all the internal nodes reachable from POs.] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -void Seq_NtkReachNodesFromPis_rec( Abc_Obj_t * pAnd, Vec_Ptr_t * vNodes ) -{ - Abc_Obj_t * pFanout; - int k; - // skip if this is a non-PI node - if ( !Abc_AigNodeIsAnd(pAnd) ) - return; - // skip a visited node - if ( Abc_NodeIsTravIdCurrent(pAnd) ) - return; - Abc_NodeSetTravIdCurrent(pAnd); - // visit the fanin nodes - Abc_ObjForEachFanout( pAnd, pFanout, k ) - Seq_NtkReachNodesFromPis_rec( pFanout, vNodes ); - // add this node - Vec_PtrPush( vNodes, pAnd ); -} - -/**Function************************************************************* - - Synopsis [Collects all the internal nodes reachable from POs.] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -Vec_Ptr_t * Seq_NtkReachNodes( Abc_Ntk_t * pNtk, int fFromPos ) -{ - Vec_Ptr_t * vNodes; - Abc_Obj_t * pObj, * pFanout; - int i, k; - assert( Abc_NtkIsSeq(pNtk) ); - vNodes = Vec_PtrAlloc( 1000 ); - Abc_NtkIncrementTravId( pNtk ); - if ( fFromPos ) - { - // traverse the cone of each PO - Abc_NtkForEachPo( pNtk, pObj, i ) - Seq_NtkReachNodesFromPos_rec( Abc_ObjFanin0(pObj), vNodes ); - } - else - { - // tranvers the reverse cone of the constant node - pObj = Abc_AigConst1( pNtk ); - Abc_ObjForEachFanout( pObj, pFanout, k ) - Seq_NtkReachNodesFromPis_rec( pFanout, vNodes ); - // tranvers the reverse cone of the PIs - Abc_NtkForEachPi( pNtk, pObj, i ) - Abc_ObjForEachFanout( pObj, pFanout, k ) - Seq_NtkReachNodesFromPis_rec( pFanout, vNodes ); - } - return vNodes; -} - -/**Function************************************************************* - - Synopsis [Perform sequential cleanup.] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -int Seq_NtkCleanup( Abc_Ntk_t * pNtk, int fVerbose ) -{ - Vec_Ptr_t * vNodesPo, * vNodesPi; - int Counter = 0; - assert( Abc_NtkIsSeq(pNtk) ); - // collect the nodes reachable from POs and PIs - vNodesPo = Seq_NtkReachNodes( pNtk, 1 ); - vNodesPi = Seq_NtkReachNodes( pNtk, 0 ); - printf( "Total nodes = %6d. Reachable from POs = %6d. Reachable from PIs = %6d.\n", - Abc_NtkNodeNum(pNtk), Vec_PtrSize(vNodesPo), Vec_PtrSize(vNodesPi) ); - if ( Abc_NtkNodeNum(pNtk) > Vec_PtrSize(vNodesPo) ) - { -// Counter = Abc_NtkReduceNodes( pNtk, vNodesPo ); - Counter = 0; - if ( fVerbose ) - printf( "Cleanup removed %d nodes that are not reachable from the POs.\n", Counter ); - } - Vec_PtrFree( vNodesPo ); - Vec_PtrFree( vNodesPi ); - return Counter; -} - -//////////////////////////////////////////////////////////////////////// -/// END OF FILE /// -//////////////////////////////////////////////////////////////////////// - - -ABC_NAMESPACE_IMPL_END - |