1 files changed, 173 insertions, 0 deletions
diff --git a/src/opt/sim/simSymSim.c b/src/opt/sim/simSymSim.c
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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, Vec_Ptr_t * vMatrsNonSym, int Output );
+
+////////////////////////////////////////////////////////////////////////
+///                     FUNCTION DEFINITIONS                         ///
+////////////////////////////////////////////////////////////////////////
+
+/**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, nPairsTotal, nPairsSym, nPairsNonSym;
+    int clk;
+
+    // create the simulation matrix
+    Sim_SymmsCreateSquare( p, pPat );
+    // simulate each node in the DFS order
+clk = clock();
+    Vec_PtrForEachEntry( p->vNodes, pNode, i )
+    {
+//        if ( Abc_NodeIsConst(pNode) )
+//            continue;
+        Sim_UtilSimulateNodeOne( pNode, p->vSim, p->nSimWords, 0 );
+    }
+p->timeSim += clock() - clk;
+    // collect info into the CO matrices
+clk = clock();
+    Abc_NtkForEachCo( p->pNtk, pNode, i )
+    {
+        pNode = Abc_ObjFanin0(pNode);
+//        if ( Abc_ObjIsCi(pNode) || Abc_AigNodeIsConst(pNode) )
+//            continue;
+        nPairsTotal  = Vec_IntEntry(p->vPairsTotal, i);
+        nPairsSym    = Vec_IntEntry(p->vPairsSym,   i);
+        nPairsNonSym = Vec_IntEntry(p->vPairsNonSym,i);
+        assert( nPairsTotal >= nPairsSym + nPairsNonSym ); 
+        if ( nPairsTotal == nPairsSym + nPairsNonSym )
+            continue;
+        Sim_SymmsDeriveInfo( p, pPat, pNode, vMatrsNonSym, i );
+    }
+p->timeMatr += clock() - clk;
+}
+
+/**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, Vec_Ptr_t * vMatrsNonSym, int Output )
+{
+    Extra_BitMat_t * pMat;
+    Vec_Int_t * vSupport;
+    unsigned * pSupport;
+    unsigned * pSimInfo;
+    int i, w, Index;
+    // get the matrix, the support, and the simulation info
+    pMat = Vec_PtrEntry( vMatrsNonSym, Output );
+    vSupport = Vec_VecEntry( p->vSupports, Output );
+    pSupport = Vec_PtrEntry( p->vSuppFun, Output );
+    pSimInfo = Vec_PtrEntry( p->vSim, pNode->Id );
+    // generate vectors A1 and A2
+    for ( w = 0; w < p->nSimWords; w++ )
+    {
+        p->uPatCol[w] = pSupport[w] & pPat[w] &  pSimInfo[w];
+        p->uPatRow[w] = pSupport[w] & pPat[w] & ~pSimInfo[w];
+    }
+    // add two dimensions
+    Vec_IntForEachEntry( vSupport, i, Index )
+        if ( Sim_HasBit( p->uPatCol, i ) )
+            Extra_BitMatrixOr( pMat, i, p->uPatRow );
+    // add two dimensions
+    Vec_IntForEachEntry( vSupport, i, Index )
+        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] = pSupport[w] & ~pPat[w] &  pSimInfo[w];
+        p->uPatRow[w] = pSupport[w] & ~pPat[w] & ~pSimInfo[w];
+    }
+    // add two dimensions
+    Vec_IntForEachEntry( vSupport, i, Index )
+        if ( Sim_HasBit( p->uPatCol, i ) )
+            Extra_BitMatrixOr( pMat, i, p->uPatRow );
+    // add two dimensions
+    Vec_IntForEachEntry( vSupport, i, Index )
+        if ( Sim_HasBit( p->uPatRow, i ) )
+            Extra_BitMatrixOr( pMat, i, p->uPatCol );
+}
+
+////////////////////////////////////////////////////////////////////////
+///                       END OF FILE                                ///
+////////////////////////////////////////////////////////////////////////
+
+