From 12c8a54cfff5ecd6a407651fdab37d2a81d00bb4 Mon Sep 17 00:00:00 2001
From: Alan Mishchenko <alanmi@berkeley.edu>
Date: Sun, 16 Mar 2014 22:12:17 -0700
Subject: Adding barrier buffers.

---
 src/base/abc/abcBarBuf.c | 2 --
 src/base/abc/abcNtk.c    | 4 ++++
 src/base/abci/abcDar.c   | 5 +++++
 3 files changed, 9 insertions(+), 2 deletions(-)

diff --git a/src/base/abc/abcBarBuf.c b/src/base/abc/abcBarBuf.c
index 856b9f96..52c10ccf 100644
--- a/src/base/abc/abcBarBuf.c
+++ b/src/base/abc/abcBarBuf.c
@@ -271,8 +271,6 @@ Abc_Ntk_t * Abc_NtkFromBarBufsInt( Abc_Ntk_t * pNtkBase, Abc_Ntk_t * pNtk, int f
             Abc_ObjFanout0(Abc_ObjFanout0(pLatch))->pCopy = pNet->pCopy;
         }
     }
-    Abc_NtkForEachLatch( pNtk, pObj, i )
-        assert( Abc_ObjFanout0(Abc_ObjFanout0(pLatch))->pCopy != NULL );
     // build PO cones
     if ( fRoot )
     {
diff --git a/src/base/abc/abcNtk.c b/src/base/abc/abcNtk.c
index 07ee429b..4567d332 100644
--- a/src/base/abc/abcNtk.c
+++ b/src/base/abc/abcNtk.c
@@ -113,6 +113,7 @@ Abc_Ntk_t * Abc_NtkStartFrom( Abc_Ntk_t * pNtk, Abc_NtkType_t Type, Abc_NtkFunc_
     // start the network
     pNtkNew = Abc_NtkAlloc( Type, Func, 1 );
     pNtkNew->nConstrs   = pNtk->nConstrs;
+    pNtkNew->nBarBufs   = pNtk->nBarBufs;
     // duplicate the name and the spec
     pNtkNew->pName = Extra_UtilStrsav(pNtk->pName);
     pNtkNew->pSpec = Extra_UtilStrsav(pNtk->pSpec);
@@ -178,6 +179,7 @@ Abc_Ntk_t * Abc_NtkStartFromWithLatches( Abc_Ntk_t * pNtk, Abc_NtkType_t Type, A
     // start the network
     pNtkNew = Abc_NtkAlloc( Type, Func, 1 );
     pNtkNew->nConstrs   = pNtk->nConstrs;
+    pNtkNew->nBarBufs   = pNtk->nBarBufs;
     // duplicate the name and the spec
     pNtkNew->pName = Extra_UtilStrsav(pNtk->pName);
     pNtkNew->pSpec = Extra_UtilStrsav(pNtk->pSpec);
@@ -252,6 +254,7 @@ Abc_Ntk_t * Abc_NtkStartFromNoLatches( Abc_Ntk_t * pNtk, Abc_NtkType_t Type, Abc
     // start the network
     pNtkNew = Abc_NtkAlloc( Type, Func, 1 );
     pNtkNew->nConstrs   = pNtk->nConstrs;
+    pNtkNew->nBarBufs   = pNtk->nBarBufs;
     // duplicate the name and the spec
     pNtkNew->pName = Extra_UtilStrsav(pNtk->pName);
     pNtkNew->pSpec = Extra_UtilStrsav(pNtk->pSpec);
@@ -564,6 +567,7 @@ Abc_Ntk_t * Abc_NtkDupTransformMiter( Abc_Ntk_t * pNtk )
     // start the network
     pNtkNew = Abc_NtkAlloc( pNtk->ntkType, pNtk->ntkFunc, 1 );
     pNtkNew->nConstrs   = pNtk->nConstrs;
+    pNtkNew->nBarBufs   = pNtk->nBarBufs;
     // duplicate the name and the spec
     pNtkNew->pName = Extra_UtilStrsav(pNtk->pName);
     pNtkNew->pSpec = Extra_UtilStrsav(pNtk->pSpec);
diff --git a/src/base/abci/abcDar.c b/src/base/abci/abcDar.c
index 4800557a..22d4fdff 100644
--- a/src/base/abci/abcDar.c
+++ b/src/base/abci/abcDar.c
@@ -417,6 +417,7 @@ Abc_Ntk_t * Abc_NtkFromDar( Abc_Ntk_t * pNtkOld, Aig_Man_t * pMan )
     // perform strashing
     pNtkNew = Abc_NtkStartFrom( pNtkOld, ABC_NTK_STRASH, ABC_FUNC_AIG );
     pNtkNew->nConstrs = pMan->nConstrs;
+    pNtkNew->nBarBufs = pNtkOld->nBarBufs;
     // transfer the pointers to the basic nodes
     Aig_ManConst1(pMan)->pData = Abc_AigConst1(pNtkNew);
     Aig_ManForEachCi( pMan, pObj, i )
@@ -467,6 +468,7 @@ Abc_Ntk_t * Abc_NtkFromDarSeqSweep( Abc_Ntk_t * pNtkOld, Aig_Man_t * pMan )
     Aig_Obj_t * pObj, * pObjLo, * pObjLi;
     int i, iNodeId, nDigits; 
     assert( pMan->nAsserts == 0 );
+    assert( pNtkOld->nBarBufs == 0 );
 //    assert( Aig_ManRegNum(pMan) != Abc_NtkLatchNum(pNtkOld) );
     // perform strashing
     pNtkNew = Abc_NtkStartFromNoLatches( pNtkOld, ABC_NTK_STRASH, ABC_FUNC_AIG );
@@ -811,6 +813,7 @@ Abc_Ntk_t * Abc_NtkAfterTrim( Aig_Man_t * pMan, Abc_Ntk_t * pNtkOld )
     Aig_Obj_t * pObj, * pObjLo, * pObjLi;
     int i; 
     assert( pMan->nAsserts == 0 );
+    assert( pNtkOld->nBarBufs == 0 );
     assert( Aig_ManRegNum(pMan) <= Abc_NtkLatchNum(pNtkOld) );
     assert( Saig_ManPiNum(pMan) <= Abc_NtkCiNum(pNtkOld) );
     assert( Saig_ManPoNum(pMan) == Abc_NtkPoNum(pNtkOld) );
@@ -899,6 +902,7 @@ Abc_Ntk_t * Abc_NtkFromDarChoices( Abc_Ntk_t * pNtkOld, Aig_Man_t * pMan )
     // perform strashing
     pNtkNew = Abc_NtkStartFrom( pNtkOld, ABC_NTK_STRASH, ABC_FUNC_AIG );
     pNtkNew->nConstrs = pMan->nConstrs;
+    pNtkNew->nBarBufs = pNtkOld->nBarBufs;
     // transfer the pointers to the basic nodes
     Aig_ManCleanData( pMan );
     Aig_ManConst1(pMan)->pData = Abc_AigConst1(pNtkNew);
@@ -956,6 +960,7 @@ Abc_Ntk_t * Abc_NtkFromDarSeq( Abc_Ntk_t * pNtkOld, Aig_Man_t * pMan )
     Aig_Obj_t * pObj;
     int i;
 //    assert( Aig_ManLatchNum(pMan) > 0 );
+    assert( pNtkOld->nBarBufs == 0 );
     // perform strashing
     pNtkNew = Abc_NtkStartFromNoLatches( pNtkOld, ABC_NTK_STRASH, ABC_FUNC_AIG );
     pNtkNew->nConstrs = pMan->nConstrs;
-- 
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