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-rw-r--r--src/aig/gia/gia.h2
-rw-r--r--src/aig/gia/giaDup.c10
-rw-r--r--src/proof/cec/cecSplit.c213
3 files changed, 219 insertions, 6 deletions
diff --git a/src/aig/gia/gia.h b/src/aig/gia/gia.h
index 052966f7..8b945d46 100644
--- a/src/aig/gia/gia.h
+++ b/src/aig/gia/gia.h
@@ -1013,7 +1013,7 @@ extern Gia_Man_t * Gia_ManDupFlopClass( Gia_Man_t * p, int iClass );
extern Gia_Man_t * Gia_ManDupMarked( Gia_Man_t * p );
extern Gia_Man_t * Gia_ManDupTimes( Gia_Man_t * p, int nTimes );
extern Gia_Man_t * Gia_ManDupDfs( Gia_Man_t * p );
-extern Gia_Man_t * Gia_ManDupDfsRehash( Gia_Man_t * p );
+extern Gia_Man_t * Gia_ManDupDfsRehash( Gia_Man_t * p, int nSteps );
extern Gia_Man_t * Gia_ManDupDfsSkip( Gia_Man_t * p );
extern Gia_Man_t * Gia_ManDupDfsCone( Gia_Man_t * p, Gia_Obj_t * pObj );
extern Gia_Man_t * Gia_ManDupDfsLitArray( Gia_Man_t * p, Vec_Int_t * vLits );
diff --git a/src/aig/gia/giaDup.c b/src/aig/gia/giaDup.c
index fca614bb..acf151f3 100644
--- a/src/aig/gia/giaDup.c
+++ b/src/aig/gia/giaDup.c
@@ -1210,9 +1210,9 @@ void Gia_ManDupDfsRehash_rec( Gia_Man_t * pNew, Gia_Man_t * p, Gia_Obj_t * pObj
Gia_ManDupDfsRehash_rec( pNew, p, Gia_ObjFanin1(pObj) );
pObj->Value = Gia_ManHashAnd( pNew, Gia_ObjFanin0Copy(pObj), Gia_ObjFanin1Copy(pObj) );
}
-Gia_Man_t * Gia_ManDupDfsRehash( Gia_Man_t * p )
+Gia_Man_t * Gia_ManDupDfsRehash( Gia_Man_t * p, int nSteps )
{
- Gia_Man_t * pNew;
+ Gia_Man_t * pNew, * pTemp;
Gia_Obj_t * pObj;
int i;
pNew = Gia_ManStart( Gia_ManObjNum(p) );
@@ -1221,7 +1221,7 @@ Gia_Man_t * Gia_ManDupDfsRehash( Gia_Man_t * p )
Gia_ManFillValue( p );
Gia_ManConst0(p)->Value = 0;
Gia_ManForEachCi( p, pObj, i )
- pObj->Value = Gia_ManAppendCi(pNew);
+ pObj->Value = i < nSteps ? 1 : Gia_ManAppendCi(pNew);
Gia_ManHashAlloc( pNew );
Gia_ManForEachCo( p, pObj, i )
Gia_ManDupDfsRehash_rec( pNew, p, Gia_ObjFanin0(pObj) );
@@ -1229,8 +1229,8 @@ Gia_Man_t * Gia_ManDupDfsRehash( Gia_Man_t * p )
Gia_ManAppendCo( pNew, Gia_ObjFanin0Copy(pObj) );
Gia_ManSetRegNum( pNew, Gia_ManRegNum(p) );
pNew->nConstrs = p->nConstrs;
- if ( p->pCexSeq )
- pNew->pCexSeq = Abc_CexDup( p->pCexSeq, Gia_ManRegNum(p) );
+ pNew = Gia_ManCleanup( pTemp = pNew );
+ Gia_ManStop( pTemp );
return pNew;
}
diff --git a/src/proof/cec/cecSplit.c b/src/proof/cec/cecSplit.c
new file mode 100644
index 00000000..05bfd9f4
--- /dev/null
+++ b/src/proof/cec/cecSplit.c
@@ -0,0 +1,213 @@
+/**CFile****************************************************************
+
+ FileName [cecSplit.c]
+
+ SystemName [ABC: Logic synthesis and verification system.]
+
+ PackageName [Combinational equivalence checking.]
+
+ Synopsis [Cofactoring for combinational miters.]
+
+ Author [Alan Mishchenko]
+
+ Affiliation [UC Berkeley]
+
+ Date [Ver. 1.0. Started - June 20, 2005.]
+
+ Revision [$Id: cecSplit.c,v 1.00 2005/06/20 00:00:00 alanmi Exp $]
+
+***********************************************************************/
+
+#include "aig/gia/gia.h"
+#include "bdd/cudd/cuddInt.h"
+
+ABC_NAMESPACE_IMPL_START
+
+
+////////////////////////////////////////////////////////////////////////
+/// DECLARATIONS ///
+////////////////////////////////////////////////////////////////////////
+
+////////////////////////////////////////////////////////////////////////
+/// FUNCTION DEFINITIONS ///
+////////////////////////////////////////////////////////////////////////
+
+/**Function*************************************************************
+
+ Synopsis [Permute primary inputs.]
+
+ Description []
+
+ SideEffects []
+
+ SeeAlso []
+
+***********************************************************************/
+DdManager * Gia_ManBuildBdd( Gia_Man_t * p, Vec_Ptr_t ** pvNodes, int nSkip )
+{
+ abctime clk = Abc_Clock();
+ DdManager * dd;
+ DdNode * bBdd, * bBdd0, * bBdd1;
+ Vec_Ptr_t * vNodes;
+ Gia_Obj_t * pObj;
+ int i;
+ vNodes = Vec_PtrStart( Gia_ManObjNum(p) );
+ dd = Cudd_Init( Gia_ManPiNum(p), 0, CUDD_UNIQUE_SLOTS, CUDD_CACHE_SLOTS, 0 );
+// Cudd_AutodynEnable( dd, CUDD_REORDER_SYMM_SIFT );
+ bBdd = Cudd_ReadLogicZero(dd); Cudd_Ref( bBdd );
+ Vec_PtrWriteEntry( vNodes, 0, bBdd );
+ Gia_ManForEachPi( p, pObj, i )
+ {
+ bBdd = i > nSkip ? Cudd_bddIthVar(dd, i) : Cudd_ReadLogicZero(dd); Cudd_Ref( bBdd );
+ Vec_PtrWriteEntry( vNodes, Gia_ObjId(p, pObj), bBdd );
+ }
+ Gia_ManForEachAnd( p, pObj, i )
+ {
+ bBdd0 = Cudd_NotCond( (DdNode *)Vec_PtrEntry(vNodes, Gia_ObjFaninId0(pObj, i)), Gia_ObjFaninC0(pObj) );
+ bBdd1 = Cudd_NotCond( (DdNode *)Vec_PtrEntry(vNodes, Gia_ObjFaninId1(pObj, i)), Gia_ObjFaninC1(pObj) );
+ bBdd = Cudd_bddAnd( dd, bBdd0, bBdd1 ); Cudd_Ref( bBdd );
+ Vec_PtrWriteEntry( vNodes, Gia_ObjId(p, pObj), bBdd );
+ if ( i % 10 == 0 )
+ printf( "%d ", i );
+// if ( i == 3000 )
+// break;
+ }
+ printf( "\n" );
+ Gia_ManForEachPo( p, pObj, i )
+ {
+ bBdd = Cudd_NotCond( (DdNode *)Vec_PtrEntry(vNodes, Gia_ObjFaninId0(pObj, Gia_ObjId(p, pObj))), Gia_ObjFaninC0(pObj) ); Cudd_Ref( bBdd );
+ Vec_PtrWriteEntry( vNodes, Gia_ObjId(p, pObj), bBdd );
+ }
+ if ( bBdd == Cudd_ReadLogicZero(dd) )
+ printf( "Equivalent!\n" );
+ else
+ printf( "Not tquivalent!\n" );
+ if ( pvNodes )
+ *pvNodes = vNodes;
+ Abc_PrintTime( 1, "Time", Abc_Clock() - clk );
+ return dd;
+}
+void Gia_ManDerefBdd( DdManager * dd, Vec_Ptr_t * vNodes )
+{
+ DdNode * bBdd;
+ int i;
+ Vec_PtrForEachEntry( DdNode *, vNodes, bBdd, i )
+ if ( bBdd )
+ Cudd_RecursiveDeref( dd, bBdd );
+ if ( Cudd_CheckZeroRef(dd) > 0 )
+ printf( "The number of referenced nodes = %d\n", Cudd_CheckZeroRef(dd) );
+ Cudd_PrintInfo( dd, stdout );
+ Cudd_Quit( dd );
+}
+void Gia_ManBuildBddTest( Gia_Man_t * p )
+{
+ Vec_Ptr_t * vNodes;
+ DdManager * dd = Gia_ManBuildBdd( p, &vNodes, 50 );
+ Gia_ManDerefBdd( dd, vNodes );
+}
+
+/**Function*************************************************************
+
+ Synopsis [Permute primary inputs.]
+
+ Description []
+
+ SideEffects []
+
+ SeeAlso []
+
+***********************************************************************/
+Gia_Man_t * Gia_PermuteSpecial( Gia_Man_t * p )
+{
+ Vec_Int_t * vPerm;
+ Gia_Man_t * pNew;
+ Gia_Obj_t * pObj;
+ int i, * pOrder;
+ Gia_ManCreateRefs( p );
+ vPerm = Vec_IntAlloc( Gia_ManPiNum(p) );
+ Gia_ManForEachPi( p, pObj, i )
+ Vec_IntPush( vPerm, Gia_ObjRefNum(p, pObj) );
+ pOrder = Abc_QuickSortCost( Vec_IntArray(vPerm), Vec_IntSize(vPerm), 1 );
+ Vec_IntFree( vPerm );
+ vPerm = Vec_IntAllocArray( pOrder, Gia_ManPiNum(p) );
+ pNew = Gia_ManDupPerm( p, vPerm );
+ Vec_IntFree( vPerm );
+ return pNew;
+}
+
+
+/**Function*************************************************************
+
+ Synopsis []
+
+ Description []
+
+ SideEffects []
+
+ SeeAlso []
+
+***********************************************************************/
+void Cec_GiaSplitExplore( Gia_Man_t * p )
+{
+ Gia_Obj_t * pObj, * pFan0, * pFan1;
+ int i, Counter = 0;
+ assert( p->pMuxes == NULL );
+ ABC_FREE( p->pRefs );
+ Gia_ManCreateRefs( p );
+ Gia_ManForEachAnd( p, pObj, i )
+ {
+ if ( !Gia_ObjRecognizeExor(pObj, &pFan0, &pFan1) )
+ continue;
+ if ( Gia_ObjRefNum(p, Gia_ObjFanin0(pObj)) > 1 &&
+ Gia_ObjRefNum(p, Gia_ObjFanin1(pObj)) > 1 )
+ continue;
+ printf( "%5d : ", Counter++ );
+ printf( "%2d %2d ", Gia_ObjRefNum(p, Gia_Regular(pFan0)), Gia_ObjRefNum(p, Gia_Regular(pFan1)) );
+ printf( "%2d %2d \n", Gia_ObjRefNum(p, Gia_ObjFanin0(pObj)), Gia_ObjRefNum(p, Gia_ObjFanin1(pObj)) );
+ }
+}
+
+/**Function*************************************************************
+
+ Synopsis []
+
+ Description []
+
+ SideEffects []
+
+ SeeAlso []
+
+***********************************************************************/
+Gia_Man_t * Cec_GiaSplitTest( Gia_Man_t * p )
+{
+ Gia_Man_t * pNew;
+// Gia_Man_t * pMuxes;
+ Gia_Man_t * pCof;
+ Gia_Obj_t * pObj;
+ int i;
+ pNew = Gia_PermuteSpecial( p );
+ Gia_ManCreateRefs( pNew );
+ Gia_ManForEachPi( pNew, pObj, i )
+ printf( "%d ", Gia_ObjRefNum(pNew, pObj) );
+ printf( "\n" );
+// Cec_GiaSplitExplore( pNew );
+// Gia_ManBuildBddTest( p );
+/*
+ // derive muxes
+ pMuxes = Gia_ManDupMuxes( pNew );
+ printf( "GIA manager has %d ANDs, %d XORs, %d MUXes.\n",
+ Gia_ManAndNum(pMuxes) - Gia_ManXorNum(pMuxes) - Gia_ManMuxNum(pMuxes), Gia_ManXorNum(pMuxes), Gia_ManMuxNum(pMuxes) );
+ Gia_ManStop( pMuxes );
+*/
+ pCof = Gia_ManDupDfsRehash( pNew, 20 );
+ Gia_ManStop( pNew );
+ return pCof;
+}
+
+////////////////////////////////////////////////////////////////////////
+/// END OF FILE ///
+////////////////////////////////////////////////////////////////////////
+
+
+ABC_NAMESPACE_IMPL_END
+
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