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abc/src/map/scl/sclUtil.c

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/**CFile****************************************************************
FileName [sclUtil.c]
SystemName [ABC: Logic synthesis and verification system.]
PackageName [Standard-cell library representation.]
Synopsis [Various utilities.]
Author [Alan Mishchenko, Niklas Een]
Affiliation [UC Berkeley]
Date [Ver. 1.0. Started - August 24, 2012.]
Revision [$Id: sclUtil.c,v 1.0 2012/08/24 00:00:00 alanmi Exp $]
***********************************************************************/
#include "sclSize.h"
#include "map/mio/mio.h"
#include "base/main/main.h"
ABC_NAMESPACE_IMPL_START
////////////////////////////////////////////////////////////////////////
/// DECLARATIONS ///
////////////////////////////////////////////////////////////////////////
////////////////////////////////////////////////////////////////////////
/// FUNCTION DEFINITIONS ///
////////////////////////////////////////////////////////////////////////
/**Function*************************************************************
Synopsis [Converts pNode->pData gates into array of SC_Lit gate IDs and back.]
Description []
SideEffects []
SeeAlso []
***********************************************************************/
void Abc_SclMioGates2SclGates( SC_Lib * pLib, Abc_Ntk_t * p )
{
Abc_Obj_t * pObj;
int i, gateId, bufferId;
// find buffer
if ( Mio_LibraryReadBuf((Mio_Library_t *)p->pManFunc) == NULL )
{
printf( "Cannot find buffer in the current library. Quitting.\n" );
return;
}
bufferId = Abc_SclCellFind( pLib, Mio_GateReadName(Mio_LibraryReadBuf((Mio_Library_t *)p->pManFunc)) );
assert( bufferId >= 0 );
// remap cells
assert( p->vGates == NULL );
p->vGates = Vec_IntStartFull( Abc_NtkObjNumMax(p) );
Abc_NtkForEachNodeNotBarBuf1( p, pObj, i )
{
gateId = Abc_SclCellFind( pLib, Mio_GateReadName((Mio_Gate_t *)pObj->pData) );
assert( gateId >= 0 );
Vec_IntWriteEntry( p->vGates, i, gateId );
}
p->pSCLib = pLib;
}
void Abc_SclSclGates2MioGates( SC_Lib * pLib, Abc_Ntk_t * p )
{
Abc_Obj_t * pObj;
SC_Cell * pCell;
int i, Counter = 0, CounterAll = 0;
assert( p->vGates != NULL );
Abc_NtkForEachNodeNotBarBuf1( p, pObj, i )
{
Mio_Gate_t * pGateOld = (Mio_Gate_t *)pObj->pData;
char * pOutName = Abc_SclObjIsMogOutput(pObj) ? Mio_GateReadOutName(pGateOld) : NULL;
pCell = Abc_SclObjCell(pObj);
assert( pCell->n_inputs == Abc_ObjFaninNum(pObj) );
pObj->pData = Mio_LibraryReadGateByName( (Mio_Library_t *)p->pManFunc, pCell->pName, pOutName );
Counter += (pObj->pData == NULL);
assert( pObj->fMarkA == 0 && pObj->fMarkB == 0 );
CounterAll++;
}
if ( Counter )
printf( "Could not find %d (out of %d) gates in the current library.\n", Counter, CounterAll );
Vec_IntFreeP( &p->vGates );
p->pSCLib = NULL;
}
/**Function*************************************************************
Synopsis [Transfer gate sizes from AIG without barbufs.]
Description []
SideEffects []
SeeAlso []
***********************************************************************/
void Abc_SclTransferGates( Abc_Ntk_t * pOld, Abc_Ntk_t * pNew )
{
Abc_Obj_t * pObj; int i;
assert( pOld->nBarBufs2 > 0 );
assert( pNew->nBarBufs2 == 0 );
Abc_NtkForEachNodeNotBarBuf( pOld, pObj, i )
{
if ( pObj->pCopy == NULL )
continue;
assert( Abc_ObjNtk(pObj->pCopy) == pNew );
pObj->pData = pObj->pCopy->pData;
}
}
/**Function*************************************************************
Synopsis [Reports percentage of gates of each size.]
Description []
SideEffects []
SeeAlso []
***********************************************************************/
#define ABC_SCL_MAX_SIZE 64
void Abc_SclManPrintGateSizes( SC_Lib * pLib, Abc_Ntk_t * p, Vec_Int_t * vGates )
{
Abc_Obj_t * pObj;
SC_Cell * pCell;
int i, nGates = 0, Counters[ABC_SCL_MAX_SIZE] = {0};
double TotArea = 0, Areas[ABC_SCL_MAX_SIZE] = {0};
Abc_NtkForEachNodeNotBarBuf1( p, pObj, i )
{
pCell = SC_LibCell( pLib, Vec_IntEntry(vGates, Abc_ObjId(pObj)) );
assert( pCell->Order < ABC_SCL_MAX_SIZE );
Counters[pCell->Order]++;
Areas[pCell->Order] += pCell->area;
TotArea += pCell->area;
nGates++;
}
printf( "Total gates = %d. Total area = %.1f\n", nGates, TotArea );
for ( i = 0; i < ABC_SCL_MAX_SIZE; i++ )
{
if ( Counters[i] == 0 )
continue;
printf( "Cell size = %d. ", i );
printf( "Count = %6d ", Counters[i] );
printf( "(%5.1f %%) ", 100.0 * Counters[i] / nGates );
printf( "Area = %12.1f ", Areas[i] );
printf( "(%5.1f %%) ", 100.0 * Areas[i] / TotArea );
printf( "\n" );
}
}
void Abc_SclPrintGateSizes( SC_Lib * pLib, Abc_Ntk_t * p )
{
Abc_SclMioGates2SclGates( pLib, p );
Abc_SclManPrintGateSizes( pLib, p, p->vGates );
Abc_SclSclGates2MioGates( pLib, p );
Vec_IntFreeP( &p->vGates );
p->pSCLib = NULL;
}
/**Function*************************************************************
Synopsis [Downsizes each gate to its minimium size.]
Description []
SideEffects []
SeeAlso []
***********************************************************************/
SC_Cell * Abc_SclFindMaxAreaCell( SC_Cell * pRepr )
{
SC_Cell * pCell, * pBest = pRepr;
float AreaBest = pRepr->area;
int i;
SC_RingForEachCell( pRepr, pCell, i )
if ( AreaBest < pCell->area )
{
AreaBest = pCell->area;
pBest = pCell;
}
return pBest;
}
Vec_Int_t * Abc_SclFindMinAreas( SC_Lib * pLib, int fUseMax )
{
Vec_Int_t * vMinCells;
SC_Cell * pCell, * pRepr = NULL, * pBest = NULL;
int i, k;
// map each gate in the library into its min/max-size prototype
vMinCells = Vec_IntStartFull( Vec_PtrSize(&pLib->vCells) );
SC_LibForEachCellClass( pLib, pRepr, i )
{
pBest = fUseMax ? Abc_SclFindMaxAreaCell(pRepr) : pRepr;
SC_RingForEachCell( pRepr, pCell, k )
Vec_IntWriteEntry( vMinCells, pCell->Id, pBest->Id );
}
return vMinCells;
}
void Abc_SclMinsizePerform( SC_Lib * pLib, Abc_Ntk_t * p, int fUseMax, int fVerbose )
{
Vec_Int_t * vMinCells;
Abc_Obj_t * pObj;
int i, gateId;
vMinCells = Abc_SclFindMinAreas( pLib, fUseMax );
Abc_SclMioGates2SclGates( pLib, p );
Abc_NtkForEachNodeNotBarBuf1( p, pObj, i )
{
gateId = Vec_IntEntry( p->vGates, i );
assert( gateId >= 0 && gateId < Vec_PtrSize(&pLib->vCells) );
gateId = Vec_IntEntry( vMinCells, gateId );
assert( gateId >= 0 && gateId < Vec_PtrSize(&pLib->vCells) );
Vec_IntWriteEntry( p->vGates, i, gateId );
}
Abc_SclSclGates2MioGates( pLib, p );
Vec_IntFree( vMinCells );
}
int Abc_SclCountMinSize( SC_Lib * pLib, Abc_Ntk_t * p, int fUseMax )
{
Vec_Int_t * vMinCells;
Abc_Obj_t * pObj;
int i, gateId, Counter = 0;
vMinCells = Abc_SclFindMinAreas( pLib, fUseMax );
Abc_NtkForEachNodeNotBarBuf1( p, pObj, i )
{
gateId = Vec_IntEntry( p->vGates, i );
Counter += ( gateId == Vec_IntEntry(vMinCells, gateId) );
}
Vec_IntFree( vMinCells );
return Counter;
}
/**Function*************************************************************
Synopsis [Reads timing constraints.]
Description []
SideEffects []
SeeAlso []
***********************************************************************/
void Abc_SclReadTimingConstr( Abc_Frame_t * pAbc, char * pFileName, int fVerbose )
{
char Buffer[1000], * pToken;
FILE * pFile = fopen( pFileName, "rb" );
while ( fgets( Buffer, 1000, pFile ) )
{
pToken = strtok( Buffer, " \t\r\n" );
if ( pToken == NULL )
continue;
if ( !strcmp(pToken, "set_driving_cell") )
// if ( !strcmp(pToken, "default_input_cell") )
{
Abc_FrameSetDrivingCell( Abc_UtilStrsav(strtok(NULL, " \t\r\n")) );
if ( fVerbose )
printf( "Setting driving cell to be \"%s\".\n", Abc_FrameReadDrivingCell() );
}
else if ( !strcmp(pToken, "set_load") )
// else if ( !strcmp(pToken, "default_output_load") )
{
Abc_FrameSetMaxLoad( atof(strtok(NULL, " \t\r\n")) );
if ( fVerbose )
printf( "Setting output load to be %f.\n", Abc_FrameReadMaxLoad() );
}
else printf( "Unrecognized token \"%s\".\n", pToken );
}
fclose( pFile );
}
/**Function*************************************************************
Synopsis []
Description []
SideEffects []
SeeAlso []
***********************************************************************/
Vec_Int_t * Abc_SclExtractBarBufs( Abc_Ntk_t * pNtk )
{
Vec_Int_t * vBufs;
Mio_Gate_t * pBuffer;
Abc_Obj_t * pObj; int i;
pBuffer = Mio_LibraryReadBuf( (Mio_Library_t *)pNtk->pManFunc );
if ( pBuffer == NULL )
{
printf( "Cannot find buffer in the current library. Quitting.\n" );
return NULL;
}
vBufs = Vec_IntAlloc( 100 );
Abc_NtkForEachBarBuf( pNtk, pObj, i )
{
assert( pObj->pData == NULL );
pObj->pData = pBuffer;
Vec_IntPush( vBufs, i );
}
return vBufs;
}
void Abc_SclInsertBarBufs( Abc_Ntk_t * pNtk, Vec_Int_t * vBufs )
{
Abc_Obj_t * pObj; int i;
Abc_NtkForEachObjVec( vBufs, pNtk, pObj, i )
pObj->pData = NULL;
}
////////////////////////////////////////////////////////////////////////
/// END OF FILE ///
////////////////////////////////////////////////////////////////////////
ABC_NAMESPACE_IMPL_END
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