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/**CFile****************************************************************
FileName [cutSeq.c]
SystemName [ABC: Logic synthesis and verification system.]
PackageName [K-feasible cut computation package.]
Synopsis [Sequential cut computation.]
Author [Alan Mishchenko]
Affiliation [UC Berkeley]
Date [Ver. 1.0. Started - June 20, 2005.]
Revision [$Id: cutSeq.c,v 1.00 2005/06/20 00:00:00 alanmi Exp $]
***********************************************************************/
#include "cutInt.h"
////////////////////////////////////////////////////////////////////////
/// DECLARATIONS ///
////////////////////////////////////////////////////////////////////////
static void Cut_NodeShiftLat( Cut_Man_t * p, int Node, int nLat );
static int Cut_ListCount( Cut_Cut_t * pList );
////////////////////////////////////////////////////////////////////////
/// FUNCTION DEFITIONS ///
////////////////////////////////////////////////////////////////////////
/**Function*************************************************************
Synopsis [Computes sequential cuts for the node from its fanins.]
Description []
SideEffects []
SeeAlso []
***********************************************************************/
void Cut_NodeComputeCutsSeq( Cut_Man_t * p, int Node, int Node0, int Node1, int fCompl0, int fCompl1, int nLat0, int nLat1, int fTriv, int CutSetNum )
{
Cut_List_t List1, List2, List3;
Cut_Cut_t * pList1, * pList2, * pList3, * pListNew;
int clk = clock();
// assert( Node != Node0 );
// assert( Node != Node1 );
// get the number of cuts at the node
p->nNodeCuts = Cut_ListCount( Cut_NodeReadCutsOld(p, Node) );
if ( p->nNodeCuts >= p->pParams->nKeepMax )
return;
// count only the first visit
if ( p->nNodeCuts == 0 )
p->nNodes++;
// shift the cuts by as many latches
if ( nLat0 ) Cut_NodeShiftLat( p, Node0, nLat0 );
if ( nLat1 ) Cut_NodeShiftLat( p, Node1, nLat1 );
// merge the old and new
pList1 = Cut_NodeDoComputeCuts( p, Node, Node0, Node1, fCompl0, fCompl1, 0, 1, 0 );
// merge the new and old
pList2 = Cut_NodeDoComputeCuts( p, Node, Node0, Node1, fCompl0, fCompl1, 1, 0, 0 );
// merge the new and new
pList3 = Cut_NodeDoComputeCuts( p, Node, Node0, Node1, fCompl0, fCompl1, 1, 1, fTriv );
p->timeMerge += clock() - clk;
// merge all lists
Cut_ListDerive( &List1, pList1 );
Cut_ListDerive( &List2, pList2 );
Cut_ListDerive( &List3, pList3 );
Cut_ListAddList( &List1, &List2 );
Cut_ListAddList( &List1, &List3 );
// set the lists at the node
pListNew = Cut_ListFinish( &List1 );
if ( CutSetNum >= 0 )
{
assert( Cut_NodeReadCutsTemp(p, CutSetNum) == NULL );
Cut_NodeWriteCutsTemp( p, CutSetNum, pListNew );
}
else
{
assert( Cut_NodeReadCutsNew(p, Node) == NULL );
Cut_NodeWriteCutsNew( p, Node, pListNew );
}
// shift the cuts by as many latches back
if ( nLat0 ) Cut_NodeShiftLat( p, Node0, -nLat0 );
if ( nLat1 ) Cut_NodeShiftLat( p, Node1, -nLat1 );
if ( p->nNodeCuts >= p->pParams->nKeepMax )
p->nCutsLimit++;
}
/**Function*************************************************************
Synopsis []
Description []
SideEffects []
SeeAlso []
***********************************************************************/
void Cut_NodeNewMergeWithOld( Cut_Man_t * p, int Node )
{
Cut_List_t Old, New;
Cut_Cut_t * pListOld, * pListNew;
// get the new cuts
pListNew = Cut_NodeReadCutsNew( p, Node );
if ( pListNew == NULL )
return;
Cut_NodeWriteCutsNew( p, Node, NULL );
// get the old cuts
pListOld = Cut_NodeReadCutsOld( p, Node );
if ( pListOld == NULL )
{
Cut_NodeWriteCutsOld( p, Node, pListNew );
return;
}
// merge the lists
Cut_ListDerive( &Old, pListOld );
Cut_ListDerive( &New, pListNew );
Cut_ListAddList( &Old, &New );
pListOld = Cut_ListFinish( &Old );
Cut_NodeWriteCutsOld( p, Node, pListOld );
}
/**Function*************************************************************
Synopsis [Returns 1 if something was transferred.]
Description []
SideEffects []
SeeAlso []
***********************************************************************/
int Cut_NodeTempTransferToNew( Cut_Man_t * p, int Node, int CutSetNum )
{
Cut_Cut_t * pCut;
pCut = Cut_NodeReadCutsTemp( p, CutSetNum );
Cut_NodeWriteCutsTemp( p, CutSetNum, NULL );
Cut_NodeWriteCutsNew( p, Node, pCut );
return pCut != NULL;
}
/**Function*************************************************************
Synopsis [Returns 1 if something was transferred.]
Description []
SideEffects []
SeeAlso []
***********************************************************************/
void Cut_NodeOldTransferToNew( Cut_Man_t * p, int Node )
{
Cut_Cut_t * pCut;
pCut = Cut_NodeReadCutsOld( p, Node );
Cut_NodeWriteCutsOld( p, Node, NULL );
Cut_NodeWriteCutsNew( p, Node, pCut );
}
/**Function*************************************************************
Synopsis []
Description []
SideEffects []
SeeAlso []
***********************************************************************/
void Cut_NodeShiftLat( Cut_Man_t * p, int Node, int nLat )
{
Cut_Cut_t * pTemp;
int i;
// shift the cuts by as many latches
Cut_ListForEachCut( Cut_NodeReadCutsOld(p, Node), pTemp )
{
pTemp->uSign = 0;
for ( i = 0; i < (int)pTemp->nLeaves; i++ )
{
pTemp->pLeaves[i] += nLat;
pTemp->uSign |= Cut_NodeSign( pTemp->pLeaves[i] );
}
}
Cut_ListForEachCut( Cut_NodeReadCutsNew(p, Node), pTemp )
{
pTemp->uSign = 0;
for ( i = 0; i < (int)pTemp->nLeaves; i++ )
{
pTemp->pLeaves[i] += nLat;
pTemp->uSign |= Cut_NodeSign( pTemp->pLeaves[i] );
}
}
}
/**Function*************************************************************
Synopsis []
Description []
SideEffects []
SeeAlso []
***********************************************************************/
int Cut_ListCount( Cut_Cut_t * pList )
{
int Counter = 0;
Cut_ListForEachCut( pList, pList )
Counter++;
return Counter;
}
////////////////////////////////////////////////////////////////////////
/// END OF FILE ///
////////////////////////////////////////////////////////////////////////
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