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abc
Commit c7b331ef by Alan Mishchenko
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Version abc80706

parent 7b734f23
Showing with 1241 additions and 626 deletions
abc.dsp
......@@ -386,6 +386,10 @@ SOURCE=.\src\base\abci\abcSat.c
# End Source File
# Begin Source File
SOURCE=.\src\base\abci\abcSense.c
# End Source File
# Begin Source File
SOURCE=.\src\base\abci\abcStrash.c
# End Source File
# Begin Source File
......@@ -3314,6 +3318,10 @@ SOURCE=.\src\aig\nwk\nwkMap.c
# End Source File
# Begin Source File
SOURCE=.\src\aig\nwk\nwkMerge.c
# End Source File
# Begin Source File
SOURCE=.\src\aig\nwk\nwkObj.c
# End Source File
# Begin Source File
......
src/aig/nwk/module.make
......@@ -6,6 +6,7 @@ SRC += src/aig/nwk/nwkAig.c \
src/aig/nwk/nwkFlow.c \
src/aig/nwk/nwkMan.c \
src/aig/nwk/nwkMap.c \
src/aig/nwk/nwkMerge.c \
src/aig/nwk/nwkObj.c \
src/aig/nwk/nwkSpeedup.c \
src/aig/nwk/nwkStrash.c \
......
src/aig/nwk/nwk.h
......@@ -109,6 +109,20 @@ struct Nwk_Obj_t_
};
// the LUT merging parameters
typedef struct Nwk_LMPars_t_ Nwk_LMPars_t;
struct Nwk_LMPars_t_
{
int nMaxLutSize; // the max LUT size for merging (N=5)
int nMaxSuppSize; // the max total support size after merging (S=5)
int nMaxDistance; // the max number of nodes separating LUTs
int nMaxLevelDiff; // the max difference in levels
int nMaxFanout; // the max number of fanouts to traverse
int fUseTfiTfo; // enables the use of TFO/TFO nodes as candidates
int fVeryVerbose; // enables additional verbose output
int fVerbose; // enables verbose output
};
////////////////////////////////////////////////////////////////////////
/// MACRO DEFINITIONS ///
////////////////////////////////////////////////////////////////////////
......
src/aig/nwk/nwkMerge.c 0 → 100644
/**CFile****************************************************************
FileName [nwkMerge.c]
SystemName [ABC: Logic synthesis and verification system.]
PackageName [Netlist representation.]
Synopsis [LUT merging algorithm.]
Author [Alan Mishchenko]
Affiliation [UC Berkeley]
Date [Ver. 1.0. Started - June 20, 2005.]
Revision [$Id: nwkMerge.c,v 1.00 2005/06/20 00:00:00 alanmi Exp $]
***********************************************************************/
#include "nwk.h"
////////////////////////////////////////////////////////////////////////
/// DECLARATIONS ///
////////////////////////////////////////////////////////////////////////
////////////////////////////////////////////////////////////////////////
/// FUNCTION DEFINITIONS ///
////////////////////////////////////////////////////////////////////////
/**Function*************************************************************
Synopsis [Marks the fanins of the node with the current trav ID.]
Description []
SideEffects []
SeeAlso []
***********************************************************************/
void Nwk_ManMarkFanins_rec( Nwk_Obj_t * pLut, int nLevMin )
{
Nwk_Obj_t * pNext;
int i;
if ( !Nwk_ObjIsNode(pLut) )
return;
if ( Nwk_ObjIsTravIdCurrent( pLut ) )
return;
Nwk_ObjSetTravIdCurrent( pLut );
if ( Nwk_ObjLevel(pLut) < nLevMin )
return;
Nwk_ObjForEachFanin( pLut, pNext, i )
Nwk_ManMarkFanins_rec( pNext, nLevMin );
}
/**Function*************************************************************
Synopsis [Marks the fanouts of the node with the current trav ID.]
Description []
SideEffects []
SeeAlso []
***********************************************************************/
void Nwk_ManMarkFanouts_rec( Nwk_Obj_t * pLut, int nLevMax, int nFanMax )
{
Nwk_Obj_t * pNext;
int i;
if ( !Nwk_ObjIsNode(pLut) )
return;
if ( Nwk_ObjIsTravIdCurrent( pLut ) )
return;
Nwk_ObjSetTravIdCurrent( pLut );
if ( Nwk_ObjLevel(pLut) > nLevMax )
return;
if ( Nwk_ObjFanoutNum(pLut) > nFanMax )
return;
Nwk_ObjForEachFanout( pLut, pNext, i )
Nwk_ManMarkFanouts_rec( pNext, nLevMax, nFanMax );
}
/**Function*************************************************************
Synopsis [Collects the circle of nodes around the given set.]
Description []
SideEffects []
SeeAlso []
***********************************************************************/
void Nwk_ManCollectCircle( Vec_Ptr_t * vStart, Vec_Ptr_t * vNext, int nFanMax )
{
Nwk_Obj_t * pObj, * pNext;
int i, k;
Vec_PtrClear( vNext );
Vec_PtrForEachEntry( vStart, pObj, i )
{
Nwk_ObjForEachFanin( pObj, pNext, k )
{
if ( !Nwk_ObjIsNode(pNext) )
continue;
if ( Nwk_ObjIsTravIdCurrent( pNext ) )
continue;
Nwk_ObjSetTravIdCurrent( pNext );
Vec_PtrPush( vNext, pNext );
}
Nwk_ObjForEachFanout( pObj, pNext, k )
{
if ( !Nwk_ObjIsNode(pNext) )
continue;
if ( Nwk_ObjIsTravIdCurrent( pNext ) )
continue;
Nwk_ObjSetTravIdCurrent( pNext );
if ( Nwk_ObjFanoutNum(pNext) > nFanMax )
continue;
Vec_PtrPush( vNext, pNext );
}
}
}
/**Function*************************************************************
Synopsis [Collects the circle of nodes removes from the given one.]
Description []
SideEffects []
SeeAlso []
***********************************************************************/
void Nwk_ManCollectNonOverlapCands( Nwk_Obj_t * pLut, Vec_Ptr_t * vStart, Vec_Ptr_t * vNext, Vec_Ptr_t * vCands, Nwk_LMPars_t * pPars )
{
Vec_Ptr_t * vTemp;
Nwk_Obj_t * pObj;
int i, k;
Vec_PtrClear( vCands );
if ( pPars->nMaxSuppSize - Nwk_ObjFaninNum(pLut) <= 1 )
return;
// collect nodes removed by this distance
assert( pPars->nMaxDistance > 0 );
Vec_PtrClear( vStart );
Vec_PtrPush( vStart, pLut );
Nwk_ManIncrementTravId( pLut->pMan );
Nwk_ObjSetTravIdCurrent( pLut );
for ( i = 1; i < pPars->nMaxDistance; i++ )
{
Nwk_ManCollectCircle( vStart, vNext, pPars->nMaxFanout );
vTemp = vStart;
vStart = vNext;
vNext = vTemp;
// collect the nodes in vStart
Vec_PtrForEachEntry( vStart, pObj, k )
Vec_PtrPush( vCands, pObj );
}
// mark the TFI/TFO nodes
Nwk_ManIncrementTravId( pLut->pMan );
if ( pPars->fUseTfiTfo )
Nwk_ObjSetTravIdCurrent( pLut );
else
{
Nwk_ObjSetTravIdPrevious( pLut );
Nwk_ManMarkFanins_rec( pLut, Nwk_ObjLevel(pLut) - pPars->nMaxDistance );
Nwk_ObjSetTravIdPrevious( pLut );
Nwk_ManMarkFanouts_rec( pLut, Nwk_ObjLevel(pLut) + pPars->nMaxDistance, pPars->nMaxFanout );
}
// collect nodes satisfying the following conditions:
// - they are close enough in terms of distance
// - they are not in the TFI/TFO of the LUT
// - they have no more than the given number of fanins
// - they have no more than the given diff in delay
k = 0;
Vec_PtrForEachEntry( vCands, pObj, i )
{
if ( Nwk_ObjIsTravIdCurrent(pObj) )
continue;
if ( Nwk_ObjFaninNum(pLut) + Nwk_ObjFaninNum(pObj) > pPars->nMaxSuppSize )
continue;
if ( Nwk_ObjLevel(pLut) - Nwk_ObjLevel(pObj) > pPars->nMaxLevelDiff ||
Nwk_ObjLevel(pObj) - Nwk_ObjLevel(pLut) > pPars->nMaxLevelDiff )
continue;
Vec_PtrWriteEntry( vCands, k++, pObj );
}
Vec_PtrShrink( vCands, k );
}
/**Function*************************************************************
Synopsis [Count the total number of fanins.]
Description []
SideEffects []
SeeAlso []
***********************************************************************/
int Nwk_ManCountTotalFanins( Nwk_Obj_t * pLut, Nwk_Obj_t * pCand )
{
Nwk_Obj_t * pFanin;
int i, nCounter = Nwk_ObjFaninNum(pLut);
Nwk_ObjForEachFanin( pCand, pFanin, i )
nCounter += !pFanin->MarkC;
return nCounter;
}
/**Function*************************************************************
Synopsis [Collects overlapping candidates.]
Description []
SideEffects []
SeeAlso []
***********************************************************************/
void Nwl_ManCollectOverlapCands( Nwk_Obj_t * pLut, Vec_Ptr_t * vCands, Nwk_LMPars_t * pPars )
{
Nwk_Obj_t * pFanin, * pObj;
int i, k;
// mark fanins of pLut
Nwk_ObjForEachFanin( pLut, pFanin, i )
pFanin->MarkC = 1;
// collect the matching fanouts of each fanin of the node
Vec_PtrClear( vCands );
Nwk_ManIncrementTravId( pLut->pMan );
Nwk_ObjSetTravIdCurrent( pLut );
Nwk_ObjForEachFanin( pLut, pFanin, i )
{
if ( !Nwk_ObjIsNode(pFanin) )
continue;
if ( Nwk_ObjFanoutNum(pFanin) > pPars->nMaxFanout )
continue;
Nwk_ObjForEachFanout( pFanin, pObj, k )
{
if ( !Nwk_ObjIsNode(pObj) )
continue;
if ( Nwk_ObjIsTravIdCurrent( pObj ) )
continue;
Nwk_ObjSetTravIdCurrent( pObj );
// check the difference in delay
if ( Nwk_ObjLevel(pLut) - Nwk_ObjLevel(pObj) > pPars->nMaxLevelDiff ||
Nwk_ObjLevel(pObj) - Nwk_ObjLevel(pLut) > pPars->nMaxLevelDiff )
continue;
// check the total number of fanins of the node
if ( Nwk_ManCountTotalFanins(pLut, pObj) > pPars->nMaxSuppSize )
continue;
Vec_PtrPush( vCands, pObj );
}
}
// unmark fanins of pLut
Nwk_ObjForEachFanin( pLut, pFanin, i )
pFanin->MarkC = 0;
}
#define MAX_LIST 16
// edge of the graph
typedef struct Nwk_Edg_t_ Nwk_Edg_t;
struct Nwk_Edg_t_
{
int iNode1; // the first node
int iNode2; // the second node
Nwk_Edg_t * pNext; // the next edge
};
// vertex of the graph
typedef struct Nwk_Vrt_t_ Nwk_Vrt_t;
struct Nwk_Vrt_t_
{
int Id; // the vertex number
int iPrev; // the previous vertex in the list
int iNext; // the next vertex in the list
int nEdges; // the number of edges
int pEdges[0]; // the array of edges
};
// the connectivity graph
typedef struct Nwk_Grf_t_ Nwk_Grf_t;
struct Nwk_Grf_t_
{
// preliminary graph representation
int nObjs; // the number of objects
int nVertsPre; // the upper bound on the number of vertices
int nEdgeHash; // approximate number of edges
Nwk_Edg_t ** pEdgeHash; // hash table for edges
Aig_MmFixed_t * pMemEdges; // memory for edges
// graph representation
int nEdges; // the number of edges
int nVerts; // the number of vertices
Nwk_Vrt_t ** pVerts; // the array of vertices
Aig_MmFlex_t * pMemVerts; // memory for vertices
// intermediate data
int pLists1[MAX_LIST+1];
int pLists2[MAX_LIST+1];
// the results of matching
Vec_Int_t * vPairs;
// mappings graph into LUTs and back
int * pMapLut2Id;
int * pMapId2Lut;
};
/**Function*************************************************************
Synopsis [Deallocates the graph.]
Description []
SideEffects []
SeeAlso []
***********************************************************************/
void Nwk_ManGraphFree( Nwk_Grf_t * p )
{
if ( p->vPairs ) Vec_IntFree( p->vPairs );
if ( p->pMemEdges ) Aig_MmFixedStop( p->pMemEdges, 0 );
if ( p->pMemVerts ) Aig_MmFlexStop( p->pMemVerts, 0 );
FREE( p->pEdgeHash );
FREE( p->pVerts );
FREE( p->pMapLut2Id );
FREE( p->pMapId2Lut );
free( p );
}
/**Function*************************************************************
Synopsis [Allocates the graph.]
Description []
SideEffects []
SeeAlso []
***********************************************************************/
Nwk_Grf_t * Nwk_ManGraphAlloc( int nObjs, int nVertsPre )
{
Nwk_Grf_t * p;
p = ALLOC( Nwk_Grf_t, 1 );
memset( p, 0, sizeof(Nwk_Grf_t) );
p->nObjs = nObjs;
p->nVertsPre = nVertsPre;
p->nEdgeHash = Aig_PrimeCudd(10 * nVertsPre);
p->pEdgeHash = CALLOC( Nwk_Edg_t *, p->nEdgeHash );
p->pMemEdges = Aig_MmFixedStart( sizeof(Nwk_Edg_t), p->nEdgeHash );
p->pMapLut2Id = ALLOC( int, nObjs );
p->pMapId2Lut = ALLOC( int, nVertsPre );
p->vPairs = Vec_IntAlloc( 1000 );
memset( p->pMapLut2Id, 0xff, sizeof(int) * nObjs );
memset( p->pMapId2Lut, 0xff, sizeof(int) * nVertsPre );
return p;
}
/**Function*************************************************************
Synopsis [Finds or adds the edge to the graph.]
Description []
SideEffects []
SeeAlso []
***********************************************************************/
static inline void Nwk_ManGraphSetMapping( Nwk_Grf_t * p, int iLut )
{
p->nVerts++;
p->pMapId2Lut[p->nVerts] = iLut;
p->pMapLut2Id[iLut] = p->nVerts;
}
/**Function*************************************************************
Synopsis [Finds or adds the edge to the graph.]
Description []
SideEffects []
SeeAlso []
***********************************************************************/
static inline void Nwk_ManGraphHashEdge( Nwk_Grf_t * p, int iLut1, int iLut2 )
{
Nwk_Edg_t * pEntry;
int Key;
if ( iLut1 == iLut2 )
return;
if ( iLut1 > iLut2 )
{
Key = iLut1;
iLut1 = iLut2;
iLut2 = Key;
}
assert( iLut1 < iLut2 );
Key = (741457 * iLut1 + 4256249 * iLut2) % p->nEdgeHash;
for ( pEntry = p->pEdgeHash[Key]; pEntry; pEntry = pEntry->pNext )
if ( pEntry->iNode1 == iLut1 && pEntry->iNode2 == iLut2 )
return;
pEntry = (Nwk_Edg_t *)Aig_MmFixedEntryFetch( p->pMemEdges );
pEntry->iNode1 = iLut1;
pEntry->iNode2 = iLut2;
pEntry->pNext = p->pEdgeHash[Key];
p->pEdgeHash[Key] = pEntry;
p->nEdges++;
}
/**Function*************************************************************
Synopsis [Prepares the graph for solving the problem.]
Description []
SideEffects []
SeeAlso []
***********************************************************************/
static inline void Nwk_ManGraphListAdd( Nwk_Grf_t * p, int * pList, Nwk_Vrt_t * pVertex )
{
if ( *pList )
{
Nwk_Vrt_t * pHead;
pHead = p->pVerts[*pList];
pVertex->iPrev = 0;
pVertex->iNext = pHead->Id;
pHead->iPrev = pVertex->Id;
}
*pList = pVertex->Id;
}
/**Function*************************************************************
Synopsis [Prepares the graph for solving the problem.]
Description []
SideEffects []
SeeAlso []
***********************************************************************/
static inline void Nwk_ManGraphListDelete( Nwk_Grf_t * p, int * pList, Nwk_Vrt_t * pVertex )
{
assert( *pList );
if ( pVertex->iPrev )
p->pVerts[pVertex->iPrev]->iNext = pVertex->iNext;
if ( pVertex->iNext )
p->pVerts[pVertex->iNext]->iNext = pVertex->iPrev;
if ( *pList == pVertex->Id )
*pList = pVertex->iNext;
pVertex->iPrev = pVertex->iNext = 0;
}
/**Function*************************************************************
Synopsis [Inserts the edge into one of the linked lists.]
Description []
SideEffects []
SeeAlso []
***********************************************************************/
static inline void Nwk_ManGraphListInsert( Nwk_Grf_t * p, Nwk_Vrt_t * pVertex )
{
Nwk_Vrt_t * pNext;
assert( pVertex->nEdges > 0 );
if ( pVertex->nEdges == 1 )
{
pNext = p->pVerts[ pVertex->pEdges[0] ];
if ( pNext->nEdges >= MAX_LIST )
Nwk_ManGraphListAdd( p, p->pLists1 + MAX_LIST, pVertex );
else
Nwk_ManGraphListAdd( p, p->pLists1 + pNext->nEdges, pVertex );
}
else
{
if ( pVertex->nEdges >= MAX_LIST )
Nwk_ManGraphListAdd( p, p->pLists1 + MAX_LIST, pVertex );
else
Nwk_ManGraphListAdd( p, p->pLists1 + pVertex->nEdges, pVertex );
}
}
/**Function*************************************************************
Synopsis [Extracts the edge from one of the linked lists.]
Description []
SideEffects []
SeeAlso []
***********************************************************************/
static inline void Nwk_ManGraphListExtract( Nwk_Grf_t * p, Nwk_Vrt_t * pVertex )
{
Nwk_Vrt_t * pNext;
assert( pVertex->nEdges > 0 );
if ( pVertex->nEdges == 1 )
{
pNext = p->pVerts[ pVertex->pEdges[0] ];
if ( pNext->nEdges >= MAX_LIST )
Nwk_ManGraphListDelete( p, p->pLists1 + MAX_LIST, pVertex );
else
Nwk_ManGraphListDelete( p, p->pLists1 + pNext->nEdges, pVertex );
}
else
{
if ( pVertex->nEdges >= MAX_LIST )
Nwk_ManGraphListDelete( p, p->pLists1 + MAX_LIST, pVertex );
else
Nwk_ManGraphListDelete( p, p->pLists1 + pVertex->nEdges, pVertex );
}
}
/**Function*************************************************************
Synopsis [Prepares the graph for solving the problem.]
Description []
SideEffects []
SeeAlso []
***********************************************************************/
void Nwk_ManGraphPrepare( Nwk_Grf_t * p )
{
Nwk_Edg_t * pEntry;
Nwk_Vrt_t * pVertex;
int * pnEdges, Key, nBytes, i;
// count the edges
pnEdges = CALLOC( int, p->nVerts );
for ( Key = 0; Key < p->nEdgeHash; Key++ )
for ( pEntry = p->pEdgeHash[Key]; pEntry; pEntry = pEntry->pNext )
{
// translate into vertices
assert( pEntry->iNode1 < p->nObjs );
assert( pEntry->iNode2 < p->nObjs );
pEntry->iNode1 = p->pMapLut2Id[pEntry->iNode1];
pEntry->iNode2 = p->pMapLut2Id[pEntry->iNode2];
// count the edges
assert( pEntry->iNode1 < p->nVerts );
assert( pEntry->iNode2 < p->nVerts );
pnEdges[pEntry->iNode1]++;
pnEdges[pEntry->iNode2]++;
}
// allocate the real graph
p->pMemVerts = Aig_MmFlexStart();
p->pVerts = ALLOC( Nwk_Vrt_t *, p->nVerts + 1 );
p->pVerts[0] = NULL;
for ( i = 1; i <= p->nVerts; i++ )
{
assert( pnEdges[i] > 0 );
nBytes = sizeof(Nwk_Vrt_t) + sizeof(int) * pnEdges[i];
p->pVerts[i] = (Nwk_Vrt_t *)Aig_MmFlexEntryFetch( p->pMemVerts, nBytes );
memset( p->pVerts[i], 0, nBytes );
p->pVerts[i]->Id = i;
}
// add edges to the real graph
for ( Key = 0; Key < p->nEdgeHash; Key++ )
for ( pEntry = p->pEdgeHash[Key]; pEntry; pEntry = pEntry->pNext )
{
pVertex = p->pVerts[pEntry->iNode1];
pVertex->pEdges[ pVertex->nEdges++ ] = pEntry->iNode2;
pVertex = p->pVerts[pEntry->iNode2];
pVertex->pEdges[ pVertex->nEdges++ ] = pEntry->iNode1;
}
// put vertices into the data structure
for ( i = 1; i <= p->nVerts; i++ )
{
assert( p->pVerts[i]->nEdges == pnEdges[i] );
Nwk_ManGraphListInsert( p, p->pVerts[i] );
}
// clean up
Aig_MmFixedStop( p->pMemEdges, 0 ); p->pMemEdges = NULL;
FREE( p->pEdgeHash );
p->nEdgeHash = 0;
free( pnEdges );
}
/**Function*************************************************************
Synopsis [Updates the problem after pulling out one edge.]
Description []
SideEffects []
SeeAlso []
***********************************************************************/
void Nwk_ManGraphUpdate( Nwk_Grf_t * p, Nwk_Vrt_t * pVertex, Nwk_Vrt_t * pNext )
{
Nwk_Vrt_t * pChanged;
int i, k;
// update neibors of pVertex
for ( i = 0; i < pVertex->nEdges; i++ )
{
pChanged = p->pVerts[ pVertex->pEdges[i] ];
Nwk_ManGraphListExtract( p, pChanged );
for ( k = 0; k < pChanged->nEdges; k++ )
if ( pChanged->pEdges[k] == pVertex->Id )
break;
assert( k < pChanged->nEdges );
pChanged->nEdges--;
for ( ; k < pChanged->nEdges; k++ )
pChanged->pEdges[k] = pChanged->pEdges[k+1];
if ( pChanged->nEdges > 0 )
Nwk_ManGraphListInsert( p, pChanged );
}
// update neibors of pNext
for ( i = 0; i < pNext->nEdges; i++ )
{
pChanged = p->pVerts[ pNext->pEdges[i] ];
Nwk_ManGraphListExtract( p, pChanged );
for ( k = 0; k < pChanged->nEdges; k++ )
if ( pChanged->pEdges[k] == pNext->Id )
break;
assert( k < pChanged->nEdges );
pChanged->nEdges--;
for ( ; k < pChanged->nEdges; k++ )
pChanged->pEdges[k] = pChanged->pEdges[k+1];
if ( pChanged->nEdges > 0 )
Nwk_ManGraphListInsert( p, pChanged );
}
// add to the result
if ( pVertex->Id < pNext->Id )
{
Vec_IntPush( p->vPairs, p->pMapId2Lut[pVertex->Id] );
Vec_IntPush( p->vPairs, p->pMapId2Lut[pNext->Id] );
}
else
{
Vec_IntPush( p->vPairs, p->pMapId2Lut[pNext->Id] );
Vec_IntPush( p->vPairs, p->pMapId2Lut[pVertex->Id] );
}
}
/**Function*************************************************************
Synopsis [Solves the problem.]
Description []
SideEffects []
SeeAlso []
***********************************************************************/
void Nwk_ManGraphSolve( Nwk_Grf_t * p )
{
Nwk_Vrt_t * pVertex, * pNext;
int i, j;
while ( 1 )
{
// find the next vertext to extract
for ( i = 1; i <= MAX_LIST; i++ )
if ( p->pLists1[i] )
{
pVertex = p->pVerts[ p->pLists1[i] ];
assert( pVertex->nEdges == 1 );
pNext = p->pVerts[ pVertex->pEdges[0] ];
// update the data-structures
Nwk_ManGraphUpdate( p, pVertex, pNext );
break;
}
// find the next vertext to extract
for ( j = 2; j <= MAX_LIST; j++ )
if ( p->pLists2[j] )
{
pVertex = p->pVerts[ p->pLists2[j] ];
assert( pVertex->nEdges == j || j == MAX_LIST );
// update the data-structures
Nwk_ManGraphUpdate( p, pVertex, pNext );
break;
}
if ( i == MAX_LIST + 1 && j == MAX_LIST + 1 )
break;
}
}
/**Function*************************************************************
Synopsis [Performs LUT merging with parameters.]
Description []
SideEffects []
SeeAlso []
***********************************************************************/
Vec_Int_t * Nwk_ManLutMerge( Nwk_Man_t * pNtk, Nwk_LMPars_t * pPars )
{
Nwk_Grf_t * p;
Vec_Int_t * vResult;
Vec_Ptr_t * vStart, * vNext, * vCands1, * vCands2;
Nwk_Obj_t * pLut, * pCand;
int i, k, nVertsPre;
// count the number of vertices
nVertsPre = 0;
Nwk_ManForEachNode( pNtk, pLut, i )
nVertsPre += (int)(Nwk_ObjFaninNum(pLut) <= pPars->nMaxLutSize);
p = Nwk_ManGraphAlloc( Nwk_ManObjNumMax(pNtk), nVertsPre );
// create graph
vStart = Vec_PtrAlloc( 1000 );
vNext = Vec_PtrAlloc( 1000 );
vCands1 = Vec_PtrAlloc( 1000 );
vCands2 = Vec_PtrAlloc( 1000 );
Nwk_ManForEachNode( pNtk, pLut, i )
{
if ( Nwk_ObjFaninNum(pLut) > pPars->nMaxLutSize )
continue;
Nwl_ManCollectOverlapCands( pLut, vCands1, pPars );
Nwk_ManCollectNonOverlapCands( pLut, vStart, vNext, vCands2, pPars );
if ( Vec_PtrSize(vCands1) == 0 && Vec_PtrSize(vCands2) == 0 )
continue;
// save candidates
Nwk_ManGraphSetMapping( p, Nwk_ObjId(pLut) );
Vec_PtrForEachEntry( vCands1, pCand, k )
Nwk_ManGraphHashEdge( p, Nwk_ObjId(pLut), Nwk_ObjId(pCand) );
Vec_PtrForEachEntry( vCands2, pCand, k )
Nwk_ManGraphHashEdge( p, Nwk_ObjId(pLut), Nwk_ObjId(pCand) );
// print statistics about this node
printf( "Node %6d : Fanins = %d. Fanouts = %3d. Cand1 = %3d. Cand2 = %3d.\n",
Nwk_ObjId(pLut), Nwk_ObjFaninNum(pLut), Nwk_ObjFaninNum(pLut),
Vec_PtrSize(vCands1), Vec_PtrSize(vCands2) );
}
Vec_PtrFree( vStart );
Vec_PtrFree( vNext );
Vec_PtrFree( vCands1 );
Vec_PtrFree( vCands2 );
// solve the graph problem
Nwk_ManGraphPrepare( p );
Nwk_ManGraphSolve( p );
vResult = p->vPairs; p->vPairs = NULL;
Nwk_ManGraphFree( p );
return vResult;
}
////////////////////////////////////////////////////////////////////////
/// END OF FILE ///
////////////////////////////////////////////////////////////////////////
src/aig/nwk/nwkUtil_old.c deleted 100644 → 0
/**CFile****************************************************************
FileName [nwkUtil.c]
SystemName [ABC: Logic synthesis and verification system.]
PackageName [Logic network representation.]
Synopsis [Various utilities.]
Author [Alan Mishchenko]
Affiliation [UC Berkeley]
Date [Ver. 1.0. Started - June 20, 2005.]
Revision [$Id: nwkUtil.c,v 1.00 2005/06/20 00:00:00 alanmi Exp $]
***********************************************************************/
#include "nwk.h"
#include "kit.h"
#include <math.h>
////////////////////////////////////////////////////////////////////////
/// DECLARATIONS ///
////////////////////////////////////////////////////////////////////////
////////////////////////////////////////////////////////////////////////
/// FUNCTION DEFINITIONS ///
////////////////////////////////////////////////////////////////////////
/**Function*************************************************************
Synopsis [Increments the current traversal ID of the network.]
Description []
SideEffects []
SeeAlso []
***********************************************************************/
void Nwk_ManIncrementTravId( Nwk_Man_t * pNtk )
{
Nwk_Obj_t * pObj;
int i;
if ( pNtk->nTravIds >= (1<<26)-1 )
{
pNtk->nTravIds = 0;
Nwk_ManForEachObj( pNtk, pObj, i )
pObj->TravId = 0;
}
pNtk->nTravIds++;
}
/**Function*************************************************************
Synopsis [Reads the maximum number of fanins.]
Description []
SideEffects []
SeeAlso []
***********************************************************************/
int Nwk_ManGetFaninMax( Nwk_Man_t * pNtk )
{
Nwk_Obj_t * pNode;
int i, nFaninsMax = 0;
Nwk_ManForEachNode( pNtk, pNode, i )
{
if ( nFaninsMax < Nwk_ObjFaninNum(pNode) )
nFaninsMax = Nwk_ObjFaninNum(pNode);
}
return nFaninsMax;
}
/**Function*************************************************************
Synopsis [Reads the total number of all fanins.]
Description []
SideEffects []
SeeAlso []
***********************************************************************/
int Nwk_ManGetTotalFanins( Nwk_Man_t * pNtk )
{
Nwk_Obj_t * pNode;
int i, nFanins = 0;
Nwk_ManForEachNode( pNtk, pNode, i )
nFanins += Nwk_ObjFaninNum(pNode);
return nFanins;
}
/**Function*************************************************************
Synopsis []
Description []
SideEffects []
SeeAlso []
***********************************************************************/
int Nwk_ManPiNum( Nwk_Man_t * pNtk )
{
Nwk_Obj_t * pNode;
int i, Counter = 0;
Nwk_ManForEachCi( pNtk, pNode, i )
Counter += Nwk_ObjIsPi( pNode );
return Counter;
}
/**Function*************************************************************
Synopsis []
Description []
SideEffects []
SeeAlso []
***********************************************************************/
int Nwk_ManPoNum( Nwk_Man_t * pNtk )
{
Nwk_Obj_t * pNode;
int i, Counter = 0;
Nwk_ManForEachCo( pNtk, pNode, i )
Counter += Nwk_ObjIsPo( pNode );
return Counter;
}
/**Function*************************************************************
Synopsis [Reads the number of BDD nodes.]
Description []
SideEffects []
SeeAlso []
***********************************************************************/
int Nwk_ManGetAigNodeNum( Nwk_Man_t * pNtk )
{
Nwk_Obj_t * pNode;
int i, nNodes = 0;
Nwk_ManForEachNode( pNtk, pNode, i )
{
if ( pNode->pFunc == NULL )
{
printf( "Nwk_ManGetAigNodeNum(): Local AIG of node %d is not assigned.\n", pNode->Id );
continue;
}
if ( Nwk_ObjFaninNum(pNode) < 2 )
continue;
nNodes += Hop_DagSize( pNode->pFunc );
}
return nNodes;
}
/**Function*************************************************************
Synopsis [Procedure used for sorting the nodes in increasing order of levels.]
Description []
SideEffects []
SeeAlso []
***********************************************************************/
int Nwk_NodeCompareLevelsIncrease( Nwk_Obj_t ** pp1, Nwk_Obj_t ** pp2 )
{
int Diff = (*pp1)->Level - (*pp2)->Level;
if ( Diff < 0 )
return -1;
if ( Diff > 0 )
return 1;
return 0;
}
/**Function*************************************************************
Synopsis [Procedure used for sorting the nodes in decreasing order of levels.]
Description []
SideEffects []
SeeAlso []
***********************************************************************/
int Nwk_NodeCompareLevelsDecrease( Nwk_Obj_t ** pp1, Nwk_Obj_t ** pp2 )
{
int Diff = (*pp1)->Level - (*pp2)->Level;
if ( Diff > 0 )
return -1;
if ( Diff < 0 )
return 1;
return 0;
}
/**Function*************************************************************
Synopsis [Deletes the node.]
Description []
SideEffects []
SeeAlso []
***********************************************************************/
void Nwk_ObjPrint( Nwk_Obj_t * pObj )
{
Nwk_Obj_t * pNext;
int i;
printf( "ObjId = %5d. ", pObj->Id );
if ( Nwk_ObjIsPi(pObj) )
printf( "PI" );
if ( Nwk_ObjIsPo(pObj) )
printf( "PO" );
if ( Nwk_ObjIsNode(pObj) )
printf( "Node" );
printf( " Fanins = " );
Nwk_ObjForEachFanin( pObj, pNext, i )
printf( "%d ", pNext->Id );
printf( " Fanouts = " );
Nwk_ObjForEachFanout( pObj, pNext, i )
printf( "%d ", pNext->Id );
printf( "\n" );
}
/**Function*************************************************************
Synopsis [Deletes the node.]
Description []
SideEffects []
SeeAlso []
***********************************************************************/
void Nwk_ManDumpBlif( Nwk_Man_t * pNtk, char * pFileName, Vec_Ptr_t * vPiNames, Vec_Ptr_t * vPoNames )
{
FILE * pFile;
Vec_Ptr_t * vNodes;
Vec_Int_t * vTruth;
Vec_Int_t * vCover;
Nwk_Obj_t * pObj, * pFanin;
Aig_MmFlex_t * pMem;
char * pSop = NULL;
unsigned * pTruth;
int i, k, nDigits, Counter = 0;
if ( Nwk_ManPoNum(pNtk) == 0 )
{
printf( "Nwk_ManDumpBlif(): Network does not have POs.\n" );
return;
}
// collect nodes in the DFS order
nDigits = Aig_Base10Log( Nwk_ManObjNumMax(pNtk) );
// write the file
pFile = fopen( pFileName, "w" );
fprintf( pFile, "# BLIF file written by procedure Nwk_ManDumpBlif()\n" );
// fprintf( pFile, "# http://www.eecs.berkeley.edu/~alanmi/abc/\n" );
fprintf( pFile, ".model %s\n", pNtk->pName );
// write PIs
fprintf( pFile, ".inputs" );
Nwk_ManForEachCi( pNtk, pObj, i )
if ( vPiNames )
fprintf( pFile, " %s", Vec_PtrEntry(vPiNames, i) );
else
fprintf( pFile, " n%0*d", nDigits, pObj->Id );
fprintf( pFile, "\n" );
// write POs
fprintf( pFile, ".outputs" );
Nwk_ManForEachCo( pNtk, pObj, i )
if ( vPoNames )
fprintf( pFile, " %s", Vec_PtrEntry(vPoNames, i) );
else
fprintf( pFile, " n%0*d", nDigits, pObj->Id );
fprintf( pFile, "\n" );
// write nodes
pMem = Aig_MmFlexStart();
vTruth = Vec_IntAlloc( 1 << 16 );
vCover = Vec_IntAlloc( 1 << 16 );
vNodes = Nwk_ManDfs( pNtk );
Vec_PtrForEachEntry( vNodes, pObj, i )
{
if ( !Nwk_ObjIsNode(pObj) )
continue;
// derive SOP for the AIG
pTruth = Hop_ManConvertAigToTruth( pNtk->pManHop, Hop_Regular(pObj->pFunc), Nwk_ObjFaninNum(pObj), vTruth, 0 );
if ( Hop_IsComplement(pObj->pFunc) )
Kit_TruthNot( pTruth, pTruth, Nwk_ObjFaninNum(pObj) );
pSop = Kit_PlaFromTruth( pMem, pTruth, Nwk_ObjFaninNum(pObj), vCover );
// write the node
fprintf( pFile, ".names" );
if ( !Kit_TruthIsConst0(pTruth, Nwk_ObjFaninNum(pObj)) && !Kit_TruthIsConst1(pTruth, Nwk_ObjFaninNum(pObj)) )
{
Nwk_ObjForEachFanin( pObj, pFanin, k )
if ( vPiNames && Nwk_ObjIsPi(pFanin) )
fprintf( pFile, " %s", Vec_PtrEntry(vPiNames, Nwk_ObjPioNum(pFanin)) );
else
fprintf( pFile, " n%0*d", nDigits, pFanin->Id );
}
fprintf( pFile, " n%0*d\n", nDigits, pObj->Id );
// write the function
fprintf( pFile, "%s", pSop );
}
Vec_IntFree( vCover );
Vec_IntFree( vTruth );
Vec_PtrFree( vNodes );
Aig_MmFlexStop( pMem, 0 );
// write POs
Nwk_ManForEachCo( pNtk, pObj, i )
{
fprintf( pFile, ".names" );
if ( vPiNames && Nwk_ObjIsPi(Nwk_ObjFanin0(pObj)) )
fprintf( pFile, " %s", Vec_PtrEntry(vPiNames, Nwk_ObjPioNum(Nwk_ObjFanin0(pObj))) );
else
fprintf( pFile, " n%0*d", nDigits, Nwk_ObjFanin0(pObj)->Id );
if ( vPoNames )
fprintf( pFile, " %s\n", Vec_PtrEntry(vPoNames, Nwk_ObjPioNum(pObj)) );
else
fprintf( pFile, " n%0*d\n", nDigits, pObj->Id );
fprintf( pFile, "%d 1\n", !pObj->fInvert );
}
fprintf( pFile, ".end\n\n" );
fclose( pFile );
}
/**Function*************************************************************
Synopsis [Prints the distribution of fanins/fanouts in the network.]
Description []
SideEffects []
SeeAlso []
***********************************************************************/
void Nwk_ManPrintFanioNew( Nwk_Man_t * pNtk )
{
char Buffer[100];
Nwk_Obj_t * pNode;
Vec_Int_t * vFanins, * vFanouts;
int nFanins, nFanouts, nFaninsMax, nFanoutsMax, nFaninsAll, nFanoutsAll;
int i, k, nSizeMax;
// determine the largest fanin and fanout
nFaninsMax = nFanoutsMax = 0;
nFaninsAll = nFanoutsAll = 0;
Nwk_ManForEachNode( pNtk, pNode, i )
{
nFanins = Nwk_ObjFaninNum(pNode);
nFanouts = Nwk_ObjFanoutNum(pNode);
nFaninsAll += nFanins;
nFanoutsAll += nFanouts;
nFaninsMax = AIG_MAX( nFaninsMax, nFanins );
nFanoutsMax = AIG_MAX( nFanoutsMax, nFanouts );
}
// allocate storage for fanin/fanout numbers
nSizeMax = AIG_MAX( 10 * (Aig_Base10Log(nFaninsMax) + 1), 10 * (Aig_Base10Log(nFanoutsMax) + 1) );
vFanins = Vec_IntStart( nSizeMax );
vFanouts = Vec_IntStart( nSizeMax );
// count the number of fanins and fanouts
Nwk_ManForEachNode( pNtk, pNode, i )
{
nFanins = Nwk_ObjFaninNum(pNode);
nFanouts = Nwk_ObjFanoutNum(pNode);
// nFanouts = Nwk_NodeMffcSize(pNode);
if ( nFanins < 10 )
Vec_IntAddToEntry( vFanins, nFanins, 1 );
else if ( nFanins < 100 )
Vec_IntAddToEntry( vFanins, 10 + nFanins/10, 1 );
else if ( nFanins < 1000 )
Vec_IntAddToEntry( vFanins, 20 + nFanins/100, 1 );
else if ( nFanins < 10000 )
Vec_IntAddToEntry( vFanins, 30 + nFanins/1000, 1 );
else if ( nFanins < 100000 )
Vec_IntAddToEntry( vFanins, 40 + nFanins/10000, 1 );
else if ( nFanins < 1000000 )
Vec_IntAddToEntry( vFanins, 50 + nFanins/100000, 1 );
else if ( nFanins < 10000000 )
Vec_IntAddToEntry( vFanins, 60 + nFanins/1000000, 1 );
if ( nFanouts < 10 )
Vec_IntAddToEntry( vFanouts, nFanouts, 1 );
else if ( nFanouts < 100 )
Vec_IntAddToEntry( vFanouts, 10 + nFanouts/10, 1 );
else if ( nFanouts < 1000 )
Vec_IntAddToEntry( vFanouts, 20 + nFanouts/100, 1 );
else if ( nFanouts < 10000 )
Vec_IntAddToEntry( vFanouts, 30 + nFanouts/1000, 1 );
else if ( nFanouts < 100000 )
Vec_IntAddToEntry( vFanouts, 40 + nFanouts/10000, 1 );
else if ( nFanouts < 1000000 )
Vec_IntAddToEntry( vFanouts, 50 + nFanouts/100000, 1 );
else if ( nFanouts < 10000000 )
Vec_IntAddToEntry( vFanouts, 60 + nFanouts/1000000, 1 );
}
printf( "The distribution of fanins and fanouts in the network:\n" );
printf( " Number Nodes with fanin Nodes with fanout\n" );
for ( k = 0; k < nSizeMax; k++ )
{
if ( vFanins->pArray[k] == 0 && vFanouts->pArray[k] == 0 )
continue;
if ( k < 10 )
printf( "%15d : ", k );
else
{
sprintf( Buffer, "%d - %d", (int)pow(10, k/10) * (k%10), (int)pow(10, k/10) * (k%10+1) - 1 );
printf( "%15s : ", Buffer );
}
if ( vFanins->pArray[k] == 0 )
printf( " " );
else
printf( "%12d ", vFanins->pArray[k] );
printf( " " );
if ( vFanouts->pArray[k] == 0 )
printf( " " );
else
printf( "%12d ", vFanouts->pArray[k] );
printf( "\n" );
}
Vec_IntFree( vFanins );
Vec_IntFree( vFanouts );
printf( "Fanins: Max = %d. Ave = %.2f. Fanouts: Max = %d. Ave = %.2f.\n",
nFaninsMax, 1.0*nFaninsAll/Nwk_ManNodeNum(pNtk),
nFanoutsMax, 1.0*nFanoutsAll/Nwk_ManNodeNum(pNtk) );
}
/**Function*************************************************************
Synopsis []
Description []
SideEffects []
SeeAlso []
***********************************************************************/
void Nwk_ManCleanMarks( Nwk_Man_t * pMan )
{
Nwk_Obj_t * pObj;
int i;
Nwk_ManForEachObj( pMan, pObj, i )
pObj->MarkA = pObj->MarkB = 0;
}
/**Function*************************************************************
Synopsis []
Description []
SideEffects []
SeeAlso []
***********************************************************************/
void Nwk_ManMarkCone_rec( Nwk_Obj_t * pObj )
{
Nwk_Obj_t * pNext;
int i;
if ( pObj->MarkA )
return;
pObj->MarkA = 1;
Nwk_ObjForEachFanin( pObj, pNext, i )
Nwk_ManMarkCone_rec( pNext );
}
/**Function*************************************************************
Synopsis [Returns 1 if the flow can be pushed.]
Description []
SideEffects []
SeeAlso []
***********************************************************************/
int Nwk_ManPushFlow_rec( Nwk_Obj_t * pObj )
{
Nwk_Obj_t * pNext;
int i;
if ( Nwk_ObjIsTravIdCurrent( pObj ) )
return 0;
Nwk_ObjSetTravIdCurrent( pObj );
// check the case when there is no flow
if ( !pObj->MarkB )
{
if ( pObj->MarkA )
return pObj->MarkB = 1;
Nwk_ObjForEachFanin( pObj, pNext, i )
if ( Nwk_ManPushFlow_rec( pNext ) )
return pObj->MarkB = 1;
}
// check the case when there is no flow or we could not push the flow
Nwk_ObjForEachFanout( pObj, pNext, i )
if ( Nwk_ManPushFlow_rec( pNext ) )
return 1;
return 0;
}
/**Function*************************************************************
Synopsis [Computes min-cut using max-flow.]
Description [MarkA means the sink. MarkB means the flow is present.]
SideEffects []
SeeAlso []
***********************************************************************/
void Nwk_ManComputeCut( Nwk_Man_t * pMan, int nLatches )
{
Vec_Ptr_t * vNodes;
Nwk_Obj_t * pObj, * pNext;
int i, k, RetValue, Counter = 0;
// set the sequential parameters
pMan->nLatches = nLatches;
pMan->nTruePis = Nwk_ManCiNum(pMan) - nLatches;
pMan->nTruePos = Nwk_ManCoNum(pMan) - nLatches;
// mark the CIs
Nwk_ManForEachCi( pMan, pObj, i )
pObj->MarkA = 1;
// mark the TFI of the POs
Nwk_ManForEachPoSeq( pMan, pObj, i )
Nwk_ManMarkCone_rec( pObj );
// start flow computation from each LI
// Nwk_ManIncrementTravId( pMan );
Nwk_ManForEachLiSeq( pMan, pObj, i )
{
Nwk_ManIncrementTravId( pMan );
if ( !Nwk_ManPushFlow_rec( pObj ) )
continue;
// Nwk_ManIncrementTravId( pMan );
Counter++;
}
// mark the nodes reachable from the LIs
Nwk_ManIncrementTravId( pMan );
Nwk_ManForEachLiSeq( pMan, pObj, i )
{
RetValue = Nwk_ManPushFlow_rec( pObj );
assert( RetValue == 0 );
}
// collect labeled nodes whose all fanins are labeled
vNodes = Vec_PtrAlloc( Counter );
Nwk_ManForEachObj( pMan, pObj, i )
{
// skip unlabeled
if ( !Nwk_ObjIsTravIdCurrent(pObj) )
continue;
// visit the fanins
Nwk_ObjForEachFanin( pObj, pNext, k )
if ( !Nwk_ObjIsTravIdCurrent(pNext) )
break;
if ( k == Nwk_ObjFaninNum(pObj) )
Vec_PtrPush( vNodes, pObj );
}
// unlabel these nodes
Nwk_ManIncrementTravId( pMan );
Vec_PtrForEachEntry( vNodes, pObj, i )
Nwk_ObjSetTravIdCurrent( pObj );
// collect labeled nodes having unlabeled fanouts
Vec_PtrClear( vNodes );
Nwk_ManForEachObj( pMan, pObj, i )
{
// skip unreachable nodes
if ( !Nwk_ObjIsTravIdPrevious(pObj) )
continue;
if ( Nwk_ObjIsCo(pObj) )
{
Vec_PtrPush( vNodes, pObj );
continue;
}
Nwk_ObjForEachFanout( pObj, pNext, k )
if ( Nwk_ObjIsTravIdCurrent(pNext) )
break;
if ( k < Nwk_ObjFanoutNum(pObj) )
Vec_PtrPush( vNodes, pObj );
}
// clean the marks
Nwk_ManCleanMarks( pMan );
printf( "Flow = %5d. Cut = %5d. \n", Counter, Vec_PtrSize(vNodes) );
Vec_PtrFree( vNodes );
}
////////////////////////////////////////////////////////////////////////
/// END OF FILE ///
////////////////////////////////////////////////////////////////////////
src/base/abci/abc.c
......@@ -123,6 +123,7 @@ static int Abc_CommandTest ( Abc_Frame_t * pAbc, int argc, char ** arg
static int Abc_CommandQuaVar ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandQuaRel ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandQuaReach ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandSenseInput ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandIStrash ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandICut ( Abc_Frame_t * pAbc, int argc, char ** argv );
......@@ -228,6 +229,7 @@ static int Abc_CommandAbc8Mfs ( Abc_Frame_t * pAbc, int argc, char ** arg
static int Abc_CommandAbc8Lutpack ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandAbc8Balance ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandAbc8Speedup ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandAbc8Merge ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandAbc8Fraig ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandAbc8Scl ( Abc_Frame_t * pAbc, int argc, char ** argv );
......@@ -380,6 +382,7 @@ void Abc_Init( Abc_Frame_t * pAbc )
Cmd_CommandAdd( pAbc, "Various", "qvar", Abc_CommandQuaVar, 1 );
Cmd_CommandAdd( pAbc, "Various", "qrel", Abc_CommandQuaRel, 1 );
Cmd_CommandAdd( pAbc, "Various", "qreach", Abc_CommandQuaReach, 1 );
Cmd_CommandAdd( pAbc, "Various", "senseinput", Abc_CommandSenseInput, 1 );
Cmd_CommandAdd( pAbc, "New AIG", "istrash", Abc_CommandIStrash, 1 );
Cmd_CommandAdd( pAbc, "New AIG", "icut", Abc_CommandICut, 0 );
......@@ -480,6 +483,7 @@ void Abc_Init( Abc_Frame_t * pAbc )
Cmd_CommandAdd( pAbc, "ABC8", "*lp", Abc_CommandAbc8Lutpack, 0 );
Cmd_CommandAdd( pAbc, "ABC8", "*b", Abc_CommandAbc8Balance, 0 );
Cmd_CommandAdd( pAbc, "ABC8", "*speedup", Abc_CommandAbc8Speedup, 0 );
Cmd_CommandAdd( pAbc, "ABC8", "*merge", Abc_CommandAbc8Merge, 0 );
Cmd_CommandAdd( pAbc, "ABC8", "*fraig", Abc_CommandAbc8Fraig, 0 );
Cmd_CommandAdd( pAbc, "ABC8", "*scl", Abc_CommandAbc8Scl, 0 );
......@@ -8096,6 +8100,98 @@ usage:
return 1;
}
/**Function*************************************************************
Synopsis []
Description []
SideEffects []
SeeAlso []
***********************************************************************/
int Abc_CommandSenseInput( Abc_Frame_t * pAbc, int argc, char ** argv )
{
FILE * pOut, * pErr;
Abc_Ntk_t * pNtk;
Vec_Int_t * vResult;
int c, nConfLim, fVerbose;
extern Vec_Int_t * Abc_NtkSensitivity( Abc_Ntk_t * pNtk, int nConfLim, int fVerbose );
pNtk = Abc_FrameReadNtk(pAbc);
pOut = Abc_FrameReadOut(pAbc);
pErr = Abc_FrameReadErr(pAbc);
// set defaults
nConfLim = 1000;
fVerbose = 1;
Extra_UtilGetoptReset();
while ( ( c = Extra_UtilGetopt( argc, argv, "Cvh" ) ) != EOF )
{
switch ( c )
{
case 'C':
if ( globalUtilOptind >= argc )
{
fprintf( pErr, "Command line switch \"-C\" should be followed by an integer.\n" );
goto usage;
}
nConfLim = atoi(argv[globalUtilOptind]);
globalUtilOptind++;
if ( nConfLim < 0 )
goto usage;
break;
case 'v':
fVerbose ^= 1;
break;
case 'h':
goto usage;
default:
goto usage;
}
}
if ( pNtk == NULL )
{
fprintf( pErr, "Empty network.\n" );
return 1;
}
if ( Abc_NtkGetChoiceNum( pNtk ) )
{
fprintf( pErr, "This command cannot be applied to an AIG with choice nodes.\n" );
return 1;
}
if ( !Abc_NtkIsComb(pNtk) )
{
fprintf( pErr, "This command works only for combinational transition relations.\n" );
return 1;
}
if ( !Abc_NtkIsStrash(pNtk) )
{
fprintf( pErr, "This command works only for strashed networks.\n" );
return 1;
}
if ( Abc_NtkPoNum(pNtk) < 2 )
{
fprintf( pErr, "The network should have at least two outputs.\n" );
return 1;
}
vResult = Abc_NtkSensitivity( pNtk, nConfLim, fVerbose );
Vec_IntFree( vResult );
return 0;
usage:
fprintf( pErr, "usage: senseinput [-C num] [-vh]\n" );
fprintf( pErr, "\t computes sensitivity of POs to PIs under constaint\n" );
fprintf( pErr, "\t constraint should be represented as the last PO" );
fprintf( pErr, "\t-C num : the max number of conflicts at a node [default = %d]\n", nConfLim );
fprintf( pErr, "\t-v : toggle printing verbose information [default = %s]\n", fVerbose? "yes": "no" );
fprintf( pErr, "\t-h : print the command usage\n");
return 1;
}
/**Function*************************************************************
......@@ -17224,6 +17320,156 @@ usage:
return 1;
}
//#include "nwk.h"
// the LUT merging parameters
typedef struct Nwk_LMPars_t_ Nwk_LMPars_t;
struct Nwk_LMPars_t_
{
int nMaxLutSize; // the max LUT size for merging (N=5)
int nMaxSuppSize; // the max total support size after merging (S=5)
int nMaxDistance; // the max number of nodes separating LUTs
int nMaxLevelDiff; // the max difference in levels
int nMaxFanout; // the max number of fanouts to traverse
int fUseTfiTfo; // enables the use of TFO/TFO nodes as candidates
int fVeryVerbose; // enables additional verbose output
int fVerbose; // enables verbose output
};
/**Function*************************************************************
Synopsis []
Description []
SideEffects []
SeeAlso []
***********************************************************************/
int Abc_CommandAbc8Merge( Abc_Frame_t * pAbc, int argc, char ** argv )
{
Nwk_LMPars_t Pars, * pPars = &Pars;
Vec_Int_t * vResult;
int c;
int fUseLutLib = 0;
int Percentage = 100;
int Degree = 5;
int fVerbose = 0;
int fVeryVerbose = 0;
extern Vec_Int_t * Nwk_ManLutMerge( void * pNtk, Nwk_LMPars_t * pPars );
// set defaults
memset( pPars, 0, sizeof(Nwk_LMPars_t) );
pPars->nMaxLutSize = 5; // the max LUT size for merging (N=5)
pPars->nMaxSuppSize = 5; // the max total support size after merging (S=5)
pPars->nMaxDistance = 3; // the max number of nodes separating LUTs
pPars->nMaxLevelDiff = 2; // the max difference in levels
pPars->nMaxFanout = 100; // the max number of fanouts to traverse
pPars->fUseTfiTfo = 0; // enables the use of TFO/TFO nodes as candidates
pPars->fVeryVerbose = 0; // enables additional verbose output
pPars->fVerbose = 1; // enables verbose output
Extra_UtilGetoptReset();
while ( ( c = Extra_UtilGetopt( argc, argv, "NSDLFcvwh" ) ) != EOF )
{
switch ( c )
{
case 'N':
if ( globalUtilOptind >= argc )
{
fprintf( stdout, "Command line switch \"-N\" should be followed by an integer.\n" );
goto usage;
}
pPars->nMaxLutSize = atoi(argv[globalUtilOptind]);
globalUtilOptind++;
if ( pPars->nMaxLutSize < 2 )
goto usage;
break;
case 'S':
if ( globalUtilOptind >= argc )
{
fprintf( stdout, "Command line switch \"-S\" should be followed by an integer.\n" );
goto usage;
}
pPars->nMaxSuppSize = atoi(argv[globalUtilOptind]);
globalUtilOptind++;
if ( pPars->nMaxSuppSize < 2 )
goto usage;
break;
case 'D':
if ( globalUtilOptind >= argc )
{
fprintf( stdout, "Command line switch \"-D\" should be followed by an integer.\n" );
goto usage;
}
pPars->nMaxDistance = atoi(argv[globalUtilOptind]);
globalUtilOptind++;
if ( pPars->nMaxDistance < 2 )
goto usage;
break;
case 'L':
if ( globalUtilOptind >= argc )
{
fprintf( stdout, "Command line switch \"-L\" should be followed by an integer.\n" );
goto usage;
}
pPars->nMaxLevelDiff = atoi(argv[globalUtilOptind]);
globalUtilOptind++;
if ( pPars->nMaxLevelDiff < 2 )
goto usage;
break;
case 'F':
if ( globalUtilOptind >= argc )
{
fprintf( stdout, "Command line switch \"-F\" should be followed by an integer.\n" );
goto usage;
}
pPars->nMaxFanout = atoi(argv[globalUtilOptind]);
globalUtilOptind++;
if ( pPars->nMaxFanout < 2 )
goto usage;
break;
case 'c':
pPars->fUseTfiTfo ^= 1;
break;
case 'w':
pPars->fVeryVerbose ^= 1;
break;
case 'v':
pPars->fVerbose ^= 1;
break;
case 'h':
goto usage;
default:
goto usage;
}
}
if ( pAbc->pAbc8Nwk == NULL )
{
printf( "Abc_CommandAbc8Speedup(): There is no mapped network to merge LUTs.\n" );
return 1;
}
vResult = Nwk_ManLutMerge( pAbc->pAbc8Nwk, pPars );
Vec_IntFree( vResult );
return 0;
usage:
fprintf( stdout, "usage: *merge [-NSDLF num] [-cwvh]\n" );
fprintf( stdout, "\t creates pairs of topologically-related LUTs\n" );
fprintf( stdout, "\t-N <num> : the max LUT size for merging (1 < num) [default = %d]\n", pPars->nMaxLutSize );
fprintf( stdout, "\t-S <num> : the max total support size after merging (1 < num) [default = %d]\n", pPars->nMaxSuppSize );
fprintf( stdout, "\t-D <num> : the max distance in terms of LUTs (0 < num) [default = %d]\n", pPars->nMaxDistance );
fprintf( stdout, "\t-L <num> : the max difference in levels (0 <= num) [default = %d]\n", pPars->nMaxLevelDiff );
fprintf( stdout, "\t-F <num> : the max number of fanouts to stop traversal (0 < num) [default = %d]\n", pPars->nMaxFanout );
fprintf( stdout, "\t-c : toggle the use of TFI/TFO nodes as candidates [default = %s]\n", pPars->fUseTfiTfo? "yes" : "no" );
fprintf( stdout, "\t-w : toggle printing detailed stats for each node [default = %s]\n", pPars->fVeryVerbose? "yes": "no" );
fprintf( stdout, "\t-v : toggle printing optimization summary [default = %s]\n", pPars->fVerbose? "yes": "no" );
fprintf( stdout, "\t-h : print the command usage\n");
return 1;
}
/**Function*************************************************************
Synopsis []
......
src/base/abci/abcSense.c 0 → 100644
/**CFile****************************************************************
FileName [abcSense.c]
SystemName [ABC: Logic synthesis and verification system.]
PackageName [Network and node package.]
Synopsis []
Author [Alan Mishchenko]
Affiliation [UC Berkeley]
Date [Ver. 1.0. Started - June 20, 2005.]
Revision [$Id: abc_.c,v 1.00 2005/06/20 00:00:00 alanmi Exp $]
***********************************************************************/
#include "abc.h"
#include "fraig.h"
////////////////////////////////////////////////////////////////////////
/// DECLARATIONS ///
////////////////////////////////////////////////////////////////////////
////////////////////////////////////////////////////////////////////////
/// FUNCTION DEFINITIONS ///
////////////////////////////////////////////////////////////////////////
/**Function*************************************************************
Synopsis [Copies the topmost levels of the network.]
Description []
SideEffects []
SeeAlso []
***********************************************************************/
Abc_Obj_t * Abc_NtkSensitivityMiter_rec( Abc_Ntk_t * pNtkNew, Abc_Obj_t * pNode )
{
assert( !Abc_ObjIsComplement(pNode) );
if ( pNode->pCopy )
return pNode->pCopy;
Abc_NtkSensitivityMiter_rec( pNtkNew, Abc_ObjFanin0(pNode) );
Abc_NtkSensitivityMiter_rec( pNtkNew, Abc_ObjFanin1(pNode) );
return pNode->pCopy = Abc_AigAnd( pNtkNew->pManFunc, Abc_ObjChild0Copy(pNode), Abc_ObjChild1Copy(pNode) );
}
/**Function*************************************************************
Synopsis [Creates miter for the sensitivity analysis.]
Description []
SideEffects []
SeeAlso []
***********************************************************************/
Abc_Ntk_t * Abc_NtkSensitivityMiter( Abc_Ntk_t * pNtk, int iVar )
{
Abc_Ntk_t * pMiter;
Vec_Ptr_t * vNodes;
Abc_Obj_t * pObj, * pNext, * pFanin, * pOutput, * pObjNew;
int i;
assert( Abc_NtkIsStrash(pNtk) );
assert( iVar < Abc_NtkCiNum(pNtk) );
// duplicate the network
pMiter = Abc_NtkAlloc( ABC_NTK_STRASH, ABC_FUNC_AIG, 1 );
pMiter->pName = Extra_UtilStrsav(pNtk->pName);
pMiter->pSpec = Extra_UtilStrsav(pNtk->pSpec);
// assign the PIs
Abc_NtkCleanCopy( pNtk );
Abc_AigConst1(pNtk)->pCopy = Abc_AigConst1(pMiter);
Abc_AigConst1(pNtk)->pData = Abc_AigConst1(pMiter);
Abc_NtkForEachCi( pNtk, pObj, i )
pObj->pCopy = pObj->pData = Abc_NtkCreatePi( pMiter );
Abc_NtkAddDummyPiNames( pMiter );
// assign the cofactors of the CI node to be constants
pObj = Abc_NtkCi( pNtk, iVar );
pObj->pCopy = Abc_ObjNot( Abc_AigConst1(pMiter) );
pObj->pData = Abc_AigConst1(pMiter);
// collect the internal nodes
vNodes = Abc_NtkDfsReverseNodes( pNtk, &pObj, 1 );
Vec_PtrForEachEntry( vNodes, pObj, i )
{
for ( pNext = pObj? pObj->pCopy : pObj; pObj; pObj = pNext, pNext = pObj? pObj->pCopy : pObj )
{
pFanin = Abc_ObjFanin0(pObj);
if ( !Abc_NodeIsTravIdCurrent(pFanin) )
pFanin->pData = Abc_NtkSensitivityMiter_rec( pMiter, pFanin );
pFanin = Abc_ObjFanin1(pObj);
if ( !Abc_NodeIsTravIdCurrent(pFanin) )
pFanin->pData = Abc_NtkSensitivityMiter_rec( pMiter, pFanin );
pObj->pCopy = Abc_AigAnd( pMiter->pManFunc, Abc_ObjChild0Copy(pObj), Abc_ObjChild1Copy(pObj) );
pObj->pData = Abc_AigAnd( pMiter->pManFunc, Abc_ObjChild0Data(pObj), Abc_ObjChild1Data(pObj) );
}
}
Vec_PtrFree( vNodes );
// update the affected COs
pOutput = Abc_ObjNot( Abc_AigConst1(pMiter) );
Abc_NtkForEachCo( pNtk, pObj, i )
{
if ( !Abc_NodeIsTravIdCurrent(pObj) )
continue;
// get the result of quantification
if ( i == Abc_NtkCoNum(pNtk) - 1 )
{
pOutput = Abc_AigAnd( pMiter->pManFunc, pOutput, Abc_ObjChild0Data(pObj) );
pOutput = Abc_AigAnd( pMiter->pManFunc, pOutput, Abc_ObjChild0Copy(pObj) );
}
else
{
pNext = Abc_AigXor( pMiter->pManFunc, Abc_ObjChild0Copy(pObj), Abc_ObjChild0Data(pObj) );
pOutput = Abc_AigOr( pMiter->pManFunc, pOutput, pNext );
}
}
// add the PO node and name
pObjNew = Abc_NtkCreatePo(pMiter);
Abc_ObjAddFanin( pObjNew, pOutput );
Abc_ObjAssignName( pObjNew, "miter", NULL );
// make sure everything is okay
if ( !Abc_NtkCheck( pMiter ) )
{
printf( "Abc_NtkSensitivityMiter: The network check has failed.\n" );
Abc_NtkDelete( pMiter );
return NULL;
}
return pMiter;
}
/**Function*************************************************************
Synopsis [Computing sensitivity of POs to POs under constaints.]
Description [The input network is a combinatonal AIG. The last output
is a constraint. The procedure returns the list of number of PIs,
such that at least one PO depends on this PI, under the constraint.]
SideEffects []
SeeAlso []
***********************************************************************/
Vec_Int_t * Abc_NtkSensitivity( Abc_Ntk_t * pNtk, int nConfLim, int fVerbose )
{
ProgressBar * pProgress;
Prove_Params_t Params, * pParams = &Params;
Vec_Int_t * vResult = NULL;
Abc_Ntk_t * pMiter;
Abc_Obj_t * pObj;
int RetValue, i;
assert( Abc_NtkIsStrash(pNtk) );
assert( Abc_NtkLatchNum(pNtk) == 0 );
// set up solving parameters
Prove_ParamsSetDefault( pParams );
pParams->nItersMax = 3;
pParams->nMiteringLimitLast = nConfLim;
// iterate through the PIs
vResult = Vec_IntAlloc( 100 );
pProgress = Extra_ProgressBarStart( stdout, Abc_NtkCiNum(pNtk) );
Abc_NtkForEachCi( pNtk, pObj, i )
{
Extra_ProgressBarUpdate( pProgress, i, NULL );
// generate the sensitivity miter
pMiter = Abc_NtkSensitivityMiter( pNtk, i );
// solve the miter using CEC engine
RetValue = Abc_NtkIvyProve( &pMiter, pParams );
if ( RetValue == -1 ) // undecided
Vec_IntPush( vResult, i );
else if ( RetValue == 0 )
{
int * pSimInfo = Abc_NtkVerifySimulatePattern( pMiter, pMiter->pModel );
if ( pSimInfo[0] != 1 )
printf( "ERROR in Abc_NtkMiterProve(): Generated counter-example is invalid.\n" );
// else
// printf( "Networks are NOT EQUIVALENT.\n" );
free( pSimInfo );
Vec_IntPush( vResult, i );
}
Abc_NtkDelete( pMiter );
}
Extra_ProgressBarStop( pProgress );
if ( fVerbose )
{
printf( "The outputs are sensitive to %d (out of %d) inputs:\n",
Vec_IntSize(vResult), Abc_NtkCiNum(pNtk) );
Vec_IntForEachEntry( vResult, RetValue, i )
printf( "%d ", RetValue );
printf( "\n" );
}
return vResult;
}
////////////////////////////////////////////////////////////////////////
/// END OF FILE ///
////////////////////////////////////////////////////////////////////////
src/base/abci/module.make
......@@ -48,6 +48,7 @@ SRC += src/base/abci/abc.c \
src/base/abci/abcRewrite.c \
src/base/abci/abcRr.c \
src/base/abci/abcSat.c \
src/base/abci/abcSense.c \
src/base/abci/abcStrash.c \
src/base/abci/abcSweep.c \
src/base/abci/abcSymm.c \
......
todo.txt
- required time support
- printing ABC version/platform in the output files
- fix gcc compiler warnings
- port "mfs" from MVSIS
- improve AIG rewriting package
- unify functional representation of local functions
- additional rewriting options for delay optimization
- experiment with yield-aware standard-cell mapping
- improving area recovery in integrated sequential synthesis
- high-effort logic synthesis for hard miters (cofactoring, Boolean division)
- mapping into MV cells
- SAT solver with linear constraints
- specialized synthesis for EXORs and large MUXes
- sequential AIG rewriting initial state computation
- placement-aware mapping
- sequential equivalence checking
- parser for Verilog netlists
- hierarchy manager (hierarchical BLIF/BLIF-MV parser)
- required time based on all cuts
- comparing tts of differently derived the same cut
......
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