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/**CFile****************************************************************
FileName [simSymSim.c]
SystemName [ABC: Logic synthesis and verification system.]
PackageName [Network and node package.]
Synopsis [Simulation to determine two-variable symmetries.]
Author [Alan Mishchenko]
Affiliation [UC Berkeley]
Date [Ver. 1.0. Started - June 20, 2005.]
Revision [$Id: simSymSim.c,v 1.00 2005/06/20 00:00:00 alanmi Exp $]
***********************************************************************/
#include "abc.h"
#include "sim.h"
////////////////////////////////////////////////////////////////////////
/// DECLARATIONS ///
////////////////////////////////////////////////////////////////////////
static void Sim_SymmsCreateSquare( Sym_Man_t * p, unsigned * pPat );
static void Sim_SymmsDeriveInfo( Sym_Man_t * p, unsigned * pPat, Abc_Obj_t * pNode, Extra_BitMat_t * pMatrix, int Output );
////////////////////////////////////////////////////////////////////////
/// FUNCTION DEFITIONS ///
////////////////////////////////////////////////////////////////////////
/**Function*************************************************************
Synopsis [Detects non-symmetric pairs using one pattern.]
Description []
SideEffects []
SeeAlso []
***********************************************************************/
void Sim_SymmsSimulate( Sym_Man_t * p, unsigned * pPat, Vec_Ptr_t * vMatrsNonSym )
{
Abc_Obj_t * pNode;
int i;
// create the simulation matrix
Sim_SymmsCreateSquare( p, pPat );
// simulate each node in the DFS order
Vec_PtrForEachEntry( p->vNodes, pNode, i )
{
if ( Abc_NodeIsConst(pNode) )
continue;
Sim_UtilSimulateNodeOne( pNode, p->vSim, p->nSimWords );
}
// collect info into the CO matrices
Abc_NtkForEachCo( p->pNtk, pNode, i )
{
pNode = Abc_ObjFanin0(pNode);
if ( Abc_ObjIsCi(pNode) || Abc_NodeIsConst(pNode) )
continue;
if ( Vec_IntEntry(p->vPairsTotal,i) == Vec_IntEntry(p->vPairsSym,i) + Vec_IntEntry(p->vPairsNonSym,i) )
continue;
Sim_SymmsDeriveInfo( p, pPat, pNode, Vec_PtrEntry(vMatrsNonSym, i), i );
}
}
/**Function*************************************************************
Synopsis [Creates the square matrix of simulation info.]
Description []
SideEffects []
SeeAlso []
***********************************************************************/
void Sim_SymmsCreateSquare( Sym_Man_t * p, unsigned * pPat )
{
unsigned * pSimInfo;
Abc_Obj_t * pNode;
int i, w;
// for each PI var copy the pattern
Abc_NtkForEachCi( p->pNtk, pNode, i )
{
pSimInfo = Vec_PtrEntry( p->vSim, pNode->Id );
if ( Sim_HasBit(pPat, i) )
{
for ( w = 0; w < p->nSimWords; w++ )
pSimInfo[w] = SIM_MASK_FULL;
}
else
{
for ( w = 0; w < p->nSimWords; w++ )
pSimInfo[w] = 0;
}
// flip one bit
Sim_XorBit( pSimInfo, i );
}
}
/**Function*************************************************************
Synopsis [Transfers the info to the POs.]
Description []
SideEffects []
SeeAlso []
***********************************************************************/
void Sim_SymmsDeriveInfo( Sym_Man_t * p, unsigned * pPat, Abc_Obj_t * pNode, Extra_BitMat_t * pMat, int Output )
{
unsigned * pSuppInfo;
unsigned * pSimInfo;
int i, w;
// get the simuation info for the node
pSimInfo = Vec_PtrEntry( p->vSim, pNode->Id );
pSuppInfo = Vec_PtrEntry( p->vSuppFun, Output );
// generate vectors A1 and A2
for ( w = 0; w < p->nSimWords; w++ )
{
p->uPatCol[w] = pSuppInfo[w] & pPat[w] & pSimInfo[w];
p->uPatRow[w] = pSuppInfo[w] & pPat[w] & ~pSimInfo[w];
}
// add two dimensions
for ( i = 0; i < p->nInputs; i++ )
if ( Sim_HasBit( p->uPatCol, i ) )
Extra_BitMatrixOr( pMat, i, p->uPatRow );
// add two dimensions
for ( i = 0; i < p->nInputs; i++ )
if ( Sim_HasBit( p->uPatRow, i ) )
Extra_BitMatrixOr( pMat, i, p->uPatCol );
// generate vectors B1 and B2
for ( w = 0; w < p->nSimWords; w++ )
{
p->uPatCol[w] = pSuppInfo[w] & ~pPat[w] & pSimInfo[w];
p->uPatRow[w] = pSuppInfo[w] & ~pPat[w] & ~pSimInfo[w];
}
// add two dimensions
for ( i = 0; i < p->nInputs; i++ )
if ( Sim_HasBit( p->uPatCol, i ) )
Extra_BitMatrixOr( pMat, i, p->uPatRow );
// add two dimensions
for ( i = 0; i < p->nInputs; i++ )
if ( Sim_HasBit( p->uPatRow, i ) )
Extra_BitMatrixOr( pMat, i, p->uPatCol );
}
////////////////////////////////////////////////////////////////////////
/// END OF FILE ///
////////////////////////////////////////////////////////////////////////
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