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abc/src/opt/cut/cutCut.c

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/**CFile****************************************************************
FileName [cutNode.c]
SystemName [ABC: Logic synthesis and verification system.]
PackageName [K-feasible cut computation package.]
Synopsis [Procedures to compute cuts for a node.]
Author [Alan Mishchenko]
Affiliation [UC Berkeley]
Date [Ver. 1.0. Started - June 20, 2005.]
Revision [$Id: cutNode.c,v 1.00 2005/06/20 00:00:00 alanmi Exp $]
***********************************************************************/
#include "cutInt.h"
////////////////////////////////////////////////////////////////////////
/// DECLARATIONS ///
////////////////////////////////////////////////////////////////////////
////////////////////////////////////////////////////////////////////////
/// FUNCTION DEFINITIONS ///
////////////////////////////////////////////////////////////////////////
/**Function*************************************************************
Synopsis [Allocates the cut.]
Description []
SideEffects []
SeeAlso []
***********************************************************************/
Cut_Cut_t * Cut_CutAlloc( Cut_Man_t * p )
{
Cut_Cut_t * pCut;
// cut allocation
pCut = (Cut_Cut_t *)Extra_MmFixedEntryFetch( p->pMmCuts );
memset( pCut, 0, sizeof(Cut_Cut_t) );
pCut->nVarsMax = p->pParams->nVarsMax;
pCut->fSimul = p->fSimul;
// statistics
p->nCutsAlloc++;
p->nCutsCur++;
if ( p->nCutsPeak < p->nCutsAlloc - p->nCutsDealloc )
p->nCutsPeak = p->nCutsAlloc - p->nCutsDealloc;
return pCut;
}
/**Function*************************************************************
Synopsis [Recybles the cut.]
Description []
SideEffects []
SeeAlso []
***********************************************************************/
void Cut_CutRecycle( Cut_Man_t * p, Cut_Cut_t * pCut )
{
p->nCutsDealloc++;
p->nCutsCur--;
if ( pCut->nLeaves == 1 )
p->nCutsTriv--;
Extra_MmFixedEntryRecycle( p->pMmCuts, (char *)pCut );
}
/**Function*************************************************************
Synopsis [Compares two cuts.]
Description []
SideEffects []
SeeAlso []
***********************************************************************/
int Cut_CutCompare( Cut_Cut_t * pCut1, Cut_Cut_t * pCut2 )
{
int i;
if ( pCut1->nLeaves < pCut2->nLeaves )
return -1;
if ( pCut1->nLeaves > pCut2->nLeaves )
return 1;
for ( i = 0; i < (int)pCut1->nLeaves; i++ )
{
if ( pCut1->pLeaves[i] < pCut2->pLeaves[i] )
return -1;
if ( pCut1->pLeaves[i] > pCut2->pLeaves[i] )
return 1;
}
return 0;
}
/**Function*************************************************************
Synopsis [Duplicates the list.]
Description []
SideEffects []
SeeAlso []
***********************************************************************/
Cut_Cut_t * Cut_CutDupList( Cut_Man_t * p, Cut_Cut_t * pList )
{
Cut_Cut_t * pHead = NULL, ** ppTail = &pHead;
Cut_Cut_t * pTemp, * pCopy;
if ( pList == NULL )
return NULL;
Cut_ListForEachCut( pList, pTemp )
{
pCopy = (Cut_Cut_t *)Extra_MmFixedEntryFetch( p->pMmCuts );
memcpy( pCopy, pTemp, p->EntrySize );
*ppTail = pCopy;
ppTail = &pCopy->pNext;
}
*ppTail = NULL;
return pHead;
}
/**Function*************************************************************
Synopsis [Recycles the list.]
Description []
SideEffects []
SeeAlso []
***********************************************************************/
void Cut_CutRecycleList( Cut_Man_t * p, Cut_Cut_t * pList )
{
Cut_Cut_t * pCut, * pCut2;
Cut_ListForEachCutSafe( pList, pCut, pCut2 )
Extra_MmFixedEntryRecycle( p->pMmCuts, (char *)pCut );
}
/**Function*************************************************************
Synopsis [Counts the number of cuts in the list.]
Description []
SideEffects []
SeeAlso []
***********************************************************************/
int Cut_CutCountList( Cut_Cut_t * pList )
{
int Counter = 0;
Cut_ListForEachCut( pList, pList )
Counter++;
return Counter;
}
/**Function*************************************************************
Synopsis [Merges two NULL-terminated linked lists.]
Description []
SideEffects []
SeeAlso []
***********************************************************************/
Cut_Cut_t * Cut_CutMergeLists( Cut_Cut_t * pList1, Cut_Cut_t * pList2 )
{
Cut_Cut_t * pList = NULL, ** ppTail = &pList;
Cut_Cut_t * pCut;
while ( pList1 && pList2 )
{
if ( Cut_CutCompare(pList1, pList2) < 0 )
{
pCut = pList1;
pList1 = pList1->pNext;
}
else
{
pCut = pList2;
pList2 = pList2->pNext;
}
*ppTail = pCut;
ppTail = &pCut->pNext;
}
*ppTail = pList1? pList1: pList2;
return pList;
}
/**Function*************************************************************
Synopsis [Sets the number of the cuts in the list.]
Description []
SideEffects []
SeeAlso []
***********************************************************************/
void Cut_CutNumberList( Cut_Cut_t * pList )
{
Cut_Cut_t * pCut;
int i = 0;
Cut_ListForEachCut( pList, pCut )
pCut->Num0 = i++;
}
/**Function*************************************************************
Synopsis [Creates the trivial cut.]
Description []
SideEffects []
SeeAlso []
***********************************************************************/
Cut_Cut_t * Cut_CutCreateTriv( Cut_Man_t * p, int Node )
{
Cut_Cut_t * pCut;
if ( p->pParams->fSeq )
Node <<= CUT_SHIFT;
pCut = Cut_CutAlloc( p );
pCut->nLeaves = 1;
pCut->pLeaves[0] = Node;
pCut->uSign = Cut_NodeSign( Node );
if ( p->pParams->fTruth )
{
/*
if ( pCut->nVarsMax == 4 )
Cut_CutWriteTruth( pCut, p->uTruthVars[0] );
else
Extra_BitCopy( pCut->nLeaves, p->uTruths[0], (uint8*)Cut_CutReadTruth(pCut) );
*/
unsigned * pTruth = Cut_CutReadTruth(pCut);
int i;
for ( i = 0; i < p->nTruthWords; i++ )
pTruth[i] = 0xAAAAAAAA;
}
p->nCutsTriv++;
return pCut;
}
/**Function*************************************************************
Synopsis [Print the cut.]
Description []
SideEffects []
SeeAlso []
***********************************************************************/
void Cut_CutPrint( Cut_Cut_t * pCut, int fSeq )
{
int i;
assert( pCut->nLeaves > 0 );
printf( "%d : {", pCut->nLeaves );
for ( i = 0; i < (int)pCut->nLeaves; i++ )
{
if ( fSeq )
{
printf( " %d", pCut->pLeaves[i] >> CUT_SHIFT );
if ( pCut->pLeaves[i] & CUT_MASK )
printf( "(%d)", pCut->pLeaves[i] & CUT_MASK );
}
else
printf( " %d", pCut->pLeaves[i] );
}
printf( " }" );
// printf( "\nSign = " );
// Extra_PrintBinary( stdout, &pCut->uSign, 32 );
}
/**Function*************************************************************
Synopsis [Print the cut.]
Description []
SideEffects []
SeeAlso []
***********************************************************************/
void Cut_CutPrintList( Cut_Cut_t * pList, int fSeq )
{
Cut_Cut_t * pCut;
for ( pCut = pList; pCut; pCut = pCut->pNext )
Cut_CutPrint( pCut, fSeq ), printf( "\n" );
}
/**Function*************************************************************
Synopsis [Consider dropping cuts if they are useless by now.]
Description []
SideEffects []
SeeAlso []
***********************************************************************/
void Cut_CutPrintMerge( Cut_Cut_t * pCut, Cut_Cut_t * pCut0, Cut_Cut_t * pCut1 )
{
printf( "\n" );
printf( "%d : %5d %5d %5d %5d %5d\n",
pCut0->nLeaves,
pCut0->nLeaves > 0 ? pCut0->pLeaves[0] : -1,
pCut0->nLeaves > 1 ? pCut0->pLeaves[1] : -1,
pCut0->nLeaves > 2 ? pCut0->pLeaves[2] : -1,
pCut0->nLeaves > 3 ? pCut0->pLeaves[3] : -1,
pCut0->nLeaves > 4 ? pCut0->pLeaves[4] : -1
);
printf( "%d : %5d %5d %5d %5d %5d\n",
pCut1->nLeaves,
pCut1->nLeaves > 0 ? pCut1->pLeaves[0] : -1,
pCut1->nLeaves > 1 ? pCut1->pLeaves[1] : -1,
pCut1->nLeaves > 2 ? pCut1->pLeaves[2] : -1,
pCut1->nLeaves > 3 ? pCut1->pLeaves[3] : -1,
pCut1->nLeaves > 4 ? pCut1->pLeaves[4] : -1
);
if ( pCut == NULL )
printf( "Cannot merge\n" );
else
printf( "%d : %5d %5d %5d %5d %5d\n",
pCut->nLeaves,
pCut->nLeaves > 0 ? pCut->pLeaves[0] : -1,
pCut->nLeaves > 1 ? pCut->pLeaves[1] : -1,
pCut->nLeaves > 2 ? pCut->pLeaves[2] : -1,
pCut->nLeaves > 3 ? pCut->pLeaves[3] : -1,
pCut->nLeaves > 4 ? pCut->pLeaves[4] : -1
);
}
////////////////////////////////////////////////////////////////////////
/// END OF FILE ///
////////////////////////////////////////////////////////////////////////
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