From 8014f25f6db719fa62336f997963532a14c568f6 Mon Sep 17 00:00:00 2001
From: Alan Mishchenko <alanmi@berkeley.edu>
Date: Sat, 21 Jan 2012 04:30:10 -0800
Subject: Major restructuring of the code.

---
 src/proof/llb/llb4Map.c | 123 ++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 123 insertions(+)
 create mode 100644 src/proof/llb/llb4Map.c

(limited to 'src/proof/llb/llb4Map.c')

diff --git a/src/proof/llb/llb4Map.c b/src/proof/llb/llb4Map.c
new file mode 100644
index 00000000..b1442699
--- /dev/null
+++ b/src/proof/llb/llb4Map.c
@@ -0,0 +1,123 @@
+/**CFile****************************************************************
+
+  FileName    [llb2Map.c]
+
+  SystemName  [ABC: Logic synthesis and verification system.]
+
+  PackageName [BDD based reachability.]
+
+  Synopsis    [Non-linear quantification scheduling.]
+
+  Author      [Alan Mishchenko]
+  
+  Affiliation [UC Berkeley]
+
+  Date        [Ver. 1.0. Started - June 20, 2005.]
+
+  Revision    [$Id: llb2Map.c,v 1.00 2005/06/20 00:00:00 alanmi Exp $]
+
+***********************************************************************/
+
+#include "llbInt.h"
+#include "src/base/abc/abc.h"
+#include "src/map/if/if.h"
+
+ABC_NAMESPACE_IMPL_START
+ 
+
+////////////////////////////////////////////////////////////////////////
+///                        DECLARATIONS                              ///
+////////////////////////////////////////////////////////////////////////
+
+////////////////////////////////////////////////////////////////////////
+///                     FUNCTION DEFINITIONS                         ///
+////////////////////////////////////////////////////////////////////////
+
+/**Function*************************************************************
+
+  Synopsis    [Returns internal nodes used in the mapping.]
+
+  Description []
+               
+  SideEffects []
+
+  SeeAlso     []
+
+***********************************************************************/
+Vec_Int_t * Llb_AigMap( Aig_Man_t * pAig, int nLutSize, int nLutMin )
+{
+    extern Abc_Ntk_t * Abc_NtkFromAigPhase( Aig_Man_t * pMan );
+    extern If_Man_t *  Abc_NtkToIf( Abc_Ntk_t * pNtk, If_Par_t * pPars );
+    extern void        Gia_ManSetIfParsDefault( If_Par_t * pPars );
+    If_Par_t Pars, * pPars = &Pars;
+    If_Man_t * pIfMan;
+    If_Obj_t * pAnd;
+    Abc_Ntk_t * pNtk;
+    Abc_Obj_t * pNode;
+    Vec_Int_t * vNodes;
+    Aig_Obj_t * pObj;
+    int i;
+
+    // create ABC network
+    pNtk = Abc_NtkFromAigPhase( pAig );
+    assert( Abc_NtkIsStrash(pNtk) );
+
+    // derive mapping parameters
+    Gia_ManSetIfParsDefault( pPars );
+    pPars->nLutSize = nLutSize;
+
+    // get timing information
+    pPars->pTimesArr = Abc_NtkGetCiArrivalFloats(pNtk);
+    pPars->pTimesReq = NULL;
+
+    // perform LUT mapping
+    pIfMan = Abc_NtkToIf( pNtk, pPars );    
+    if ( pIfMan == NULL )
+    {
+        Abc_NtkDelete( pNtk );
+        return NULL;
+    }
+    if ( !If_ManPerformMapping( pIfMan ) )
+    {
+        Abc_NtkDelete( pNtk );
+        If_ManStop( pIfMan );
+        return NULL;
+    }
+
+    // mark nodes in the AIG used in the mapping
+    Aig_ManCleanMarkA( pAig );
+    Aig_ManForEachNode( pAig, pObj, i )
+    {
+        pNode = (Abc_Obj_t *)pObj->pData;
+        if ( pNode == NULL )
+            continue;
+        pAnd = (If_Obj_t *)pNode->pCopy;
+        if ( pAnd == NULL )
+            continue;
+        if ( pAnd->nRefs > 0 && (int)If_ObjCutBest(pAnd)->nLeaves >= nLutMin )
+            pObj->fMarkA = 1;
+    }
+    Abc_NtkDelete( pNtk );
+    If_ManStop( pIfMan );
+
+    // unmark flop drivers
+    Saig_ManForEachLi( pAig, pObj, i )
+        Aig_ObjFanin0(pObj)->fMarkA = 0;
+
+    // collect mapping
+    vNodes = Vec_IntAlloc( 100 );
+    Aig_ManForEachNode( pAig, pObj, i )
+        if ( pObj->fMarkA )
+            Vec_IntPush( vNodes, Aig_ObjId(pObj) );
+    Aig_ManCleanMarkA( pAig );
+    return vNodes;
+}
+
+
+////////////////////////////////////////////////////////////////////////
+///                       END OF FILE                                ///
+////////////////////////////////////////////////////////////////////////
+
+
+ABC_NAMESPACE_IMPL_END
+
-- 
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