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