From 79b585848b6f57497e404d70325bdefad501c3e0 Mon Sep 17 00:00:00 2001 From: Alan Mishchenko Date: Tue, 18 Mar 2014 10:30:49 -0700 Subject: Adding barrier buffers. --- src/base/abc/abcBarBuf.c | 186 +++++++++++++++++++---------------------------- 1 file changed, 76 insertions(+), 110 deletions(-) (limited to 'src/base') diff --git a/src/base/abc/abcBarBuf.c b/src/base/abc/abcBarBuf.c index 8e285bd4..43186644 100644 --- a/src/base/abc/abcBarBuf.c +++ b/src/base/abc/abcBarBuf.c @@ -89,9 +89,9 @@ int Abc_NtkCheckSingleInstance( Abc_Ntk_t * pNtk ) SeeAlso [] ***********************************************************************/ -void Abc_NtkCollectPiPos_rec( Abc_Obj_t * pNet, Vec_Ptr_t * vBiBos, Vec_Ptr_t * vPiPos ) +void Abc_NtkCollectPiPos_rec( Abc_Obj_t * pNet, Vec_Ptr_t * vLiMaps, Vec_Ptr_t * vLoMaps ) { - extern void Abc_NtkCollectPiPos_int( Abc_Obj_t * pBox, Abc_Ntk_t * pNtk, Vec_Ptr_t * vBiBos, Vec_Ptr_t * vPiPos ); + extern void Abc_NtkCollectPiPos_int( Abc_Obj_t * pBox, Abc_Ntk_t * pNtk, Vec_Ptr_t * vLiMaps, Vec_Ptr_t * vLoMaps ); Abc_Obj_t * pObj, * pFanin; int i; assert( Abc_ObjIsNet(pNet) ); if ( Abc_NodeIsTravIdCurrent( pNet ) ) @@ -102,14 +102,11 @@ void Abc_NtkCollectPiPos_rec( Abc_Obj_t * pNet, Vec_Ptr_t * vBiBos, Vec_Ptr_t * pObj = Abc_ObjFanin0(pObj); assert( Abc_ObjIsNode(pObj) || Abc_ObjIsBox(pObj) ); Abc_ObjForEachFanin( pObj, pFanin, i ) - Abc_NtkCollectPiPos_rec( Abc_ObjIsNode(pObj) ? pFanin : Abc_ObjFanin0(pFanin), vBiBos, vPiPos ); - if ( Abc_ObjIsNode(pObj) ) - return; - Abc_ObjForEachFanin( pObj, pFanin, i ) - Abc_NtkCollectPiPos_rec( Abc_ObjFanin0(pFanin), vBiBos, vPiPos ); - Abc_NtkCollectPiPos_int( pObj, Abc_ObjModel(pObj), vBiBos, vPiPos ); + Abc_NtkCollectPiPos_rec( Abc_ObjIsNode(pObj) ? pFanin : Abc_ObjFanin0(pFanin), vLiMaps, vLoMaps ); + if ( Abc_ObjIsBox(pObj) ) + Abc_NtkCollectPiPos_int( pObj, Abc_ObjModel(pObj), vLiMaps, vLoMaps ); } -void Abc_NtkCollectPiPos_int( Abc_Obj_t * pBox, Abc_Ntk_t * pNtk, Vec_Ptr_t * vBiBos, Vec_Ptr_t * vPiPos ) +void Abc_NtkCollectPiPos_int( Abc_Obj_t * pBox, Abc_Ntk_t * pNtk, Vec_Ptr_t * vLiMaps, Vec_Ptr_t * vLoMaps ) { Abc_Obj_t * pObj; int i; // mark primary inputs @@ -120,33 +117,33 @@ void Abc_NtkCollectPiPos_int( Abc_Obj_t * pBox, Abc_Ntk_t * pNtk, Vec_Ptr_t * vB if ( pBox ) { Abc_ObjForEachFanin( pBox, pObj, i ) - Vec_PtrPush( vBiBos, pObj ); + Vec_PtrPush( vLiMaps, pObj ); Abc_NtkForEachPi( pNtk, pObj, i ) - Vec_PtrPush( vPiPos, pObj ); + Vec_PtrPush( vLoMaps, pObj ); } // visit primary outputs Abc_NtkForEachPo( pNtk, pObj, i ) - Abc_NtkCollectPiPos_rec( Abc_ObjFanin0(pObj), vBiBos, vPiPos ); + Abc_NtkCollectPiPos_rec( Abc_ObjFanin0(pObj), vLiMaps, vLoMaps ); // add primary outputs if ( pBox ) { - Abc_ObjForEachFanout( pBox, pObj, i ) - Vec_PtrPush( vBiBos, pObj ); Abc_NtkForEachPo( pNtk, pObj, i ) - Vec_PtrPush( vPiPos, pObj ); + Vec_PtrPush( vLiMaps, pObj ); + Abc_ObjForEachFanout( pBox, pObj, i ) + Vec_PtrPush( vLoMaps, pObj ); } } -void Abc_NtkCollectPiPos( Abc_Ntk_t * pNtk, Vec_Ptr_t ** pvBiBos, Vec_Ptr_t ** pvPiPos ) +void Abc_NtkCollectPiPos( Abc_Ntk_t * pNtk, Vec_Ptr_t ** pvLiMaps, Vec_Ptr_t ** pvLoMaps ) { assert( Abc_NtkIsNetlist(pNtk) ); - *pvBiBos = Vec_PtrAlloc( 1000 ); - *pvPiPos = Vec_PtrAlloc( 1000 ); - Abc_NtkCollectPiPos_int( NULL, pNtk, *pvBiBos, *pvPiPos ); + *pvLiMaps = Vec_PtrAlloc( 1000 ); + *pvLoMaps = Vec_PtrAlloc( 1000 ); + Abc_NtkCollectPiPos_int( NULL, pNtk, *pvLiMaps, *pvLoMaps ); } /**Function************************************************************* - Synopsis [Derives logic network while introducing barbufs.] + Synopsis [Derives logic network with barbufs from the netlist.] Description [] @@ -155,69 +152,62 @@ void Abc_NtkCollectPiPos( Abc_Ntk_t * pNtk, Vec_Ptr_t ** pvBiBos, Vec_Ptr_t ** p SeeAlso [] ***********************************************************************/ -void Abc_NtkToBarBufs_rec( Abc_Ntk_t * pNtkNew, Abc_Obj_t * pNet ) +Abc_Obj_t * Abc_NtkToBarBufs_rec( Abc_Ntk_t * pNtkNew, Abc_Obj_t * pNet ) { - Abc_Ntk_t * pModel; - Abc_Obj_t * pObj, * pFanin, * pFanout, * pLatch; + Abc_Obj_t * pObj, * pFanin; int i; assert( Abc_ObjIsNet(pNet) ); if ( pNet->pCopy ) - return; - pNet->pCopy = ABC_OBJ_VOID; + return pNet->pCopy; pObj = Abc_ObjFanin0(pNet); - if ( Abc_ObjIsBo(pObj) ) - pObj = Abc_ObjFanin0(pObj); - assert( Abc_ObjIsNode(pObj) || Abc_ObjIsBox(pObj) ); - Abc_ObjForEachFanin( pObj, pFanin, i ) - Abc_NtkToBarBufs_rec( pNtkNew, Abc_ObjIsNode(pObj) ? pFanin : Abc_ObjFanin0(pFanin) ); - // create and connect object - if ( Abc_ObjIsNode(pObj) ) - { - pNet->pCopy = Abc_NtkDupObj( pNtkNew, pObj, 0 ); - Abc_ObjForEachFanin( pObj, pFanin, i ) - Abc_ObjAddFanin( pObj->pCopy, pFanin->pCopy ); - return; - } - pModel = Abc_ObjModel(pObj); - Abc_NtkCleanCopy( pModel ); + assert( Abc_ObjIsNode(pObj) ); + pNet->pCopy = Abc_NtkDupObj( pNtkNew, pObj, 0 ); Abc_ObjForEachFanin( pObj, pFanin, i ) - { - pLatch = Abc_NtkAddLatch( pNtkNew, Abc_ObjFanin0(pFanin)->pCopy, ABC_INIT_ZERO ); - Abc_ObjFanout0(Abc_NtkPi(pModel, i))->pCopy = Abc_ObjFanout0(pLatch); - } - Abc_NtkForEachPo( pModel, pObj, i ) - Abc_NtkToBarBufs_rec( pNtkNew, Abc_ObjFanin0(pObj) ); - Abc_ObjForEachFanout( pObj, pFanout, i ) - { - pLatch = Abc_NtkAddLatch( pNtkNew, Abc_ObjFanin0(Abc_NtkPo(pModel, i))->pCopy, ABC_INIT_ZERO ); - Abc_ObjFanout0(pFanout)->pCopy = Abc_ObjFanout0(pLatch); - } - assert( pNet->pCopy != ABC_OBJ_VOID ); + Abc_ObjAddFanin( pObj->pCopy, Abc_NtkToBarBufs_rec(pNtkNew, pFanin) ); + return pNet->pCopy; } Abc_Ntk_t * Abc_NtkToBarBufs( Abc_Ntk_t * pNtk ) { - Abc_Ntk_t * pNtkNew; - Abc_Obj_t * pObj; - int i; + Vec_Ptr_t * vLiMaps, * vLoMaps; + Abc_Ntk_t * pNtkNew, * pTemp; + Abc_Obj_t * pLatch, * pObjLi, * pObjLo; + Abc_Obj_t * pObj, * pLiMap, * pLoMap; + int i, k; assert( Abc_NtkIsNetlist(pNtk) ); if ( !Abc_NtkCheckSingleInstance(pNtk) ) return NULL; + assert( pNtk->pDesign != NULL ); // start the network pNtkNew = Abc_NtkAlloc( ABC_NTK_LOGIC, pNtk->ntkFunc, 1 ); pNtkNew->pName = Extra_UtilStrsav(pNtk->pName); pNtkNew->pSpec = Extra_UtilStrsav(pNtk->pSpec); // clone CIs/CIs/boxes - Abc_NtkCleanCopy( pNtk ); + Abc_NtkCleanCopy_rec( pNtk ); Abc_NtkForEachPi( pNtk, pObj, i ) - Abc_ObjFanout0(pObj)->pCopy = Abc_NtkDupObj( pNtkNew, pObj, 1 ); - Abc_NtkForEachPo( pNtk, pObj, i ) Abc_NtkDupObj( pNtkNew, pObj, 1 ); - // create logic Abc_NtkForEachPo( pNtk, pObj, i ) + Abc_NtkDupObj( pNtkNew, pObj, 1 ); + // transfer labels + Abc_NtkCollectPiPos( pNtk, &vLiMaps, &vLoMaps ); + Vec_PtrForEachEntryTwo( Abc_Obj_t *, vLiMaps, Abc_Obj_t *, vLoMaps, pLiMap, pLoMap, i ) { - Abc_NtkToBarBufs_rec( pNtkNew, Abc_ObjFanin0(pObj) ); - Abc_ObjAddFanin( pObj->pCopy, Abc_ObjFanin0(pObj)->pCopy ); + pObjLi = Abc_NtkCreateBi(pNtkNew); + pLatch = Abc_NtkCreateLatch(pNtkNew); + pObjLo = Abc_NtkCreateBo(pNtkNew); + Abc_ObjAddFanin( pLatch, pObjLi ); + Abc_ObjAddFanin( pObjLo, pLatch ); + pLatch->pData = (void *)ABC_INIT_ZERO; + Abc_ObjAssignName( pObjLi, Abc_ObjName(pLiMap), "_li" ); + Abc_ObjAssignName( pObjLo, Abc_ObjName(pLoMap), "_lo" ); + pObjLi->pCopy = pLiMap; + pObjLo->pCopy = pLoMap; } + Vec_PtrFree( vLiMaps ); + Vec_PtrFree( vLoMaps ); + // rebuild networks + Vec_PtrForEachEntry( Abc_Ntk_t *, pNtk->pDesign->vModules, pTemp, i ) + Abc_NtkForEachCo( pTemp, pObj, k ) + Abc_ObjAddFanin( pObj->pCopy, Abc_NtkToBarBufs_rec(pNtkNew, Abc_ObjFanin0(pObj)) ); pNtkNew->nBarBufs = Abc_NtkLatchNum(pNtkNew); return pNtkNew; } @@ -239,7 +229,8 @@ Abc_Ntk_t * Abc_NtkToBarBufs( Abc_Ntk_t * pNtk ) ***********************************************************************/ Abc_Obj_t * Abc_NtkFromBarBufs_rec( Abc_Ntk_t * pNtkNew, Abc_Obj_t * pObj ) { - Abc_Obj_t * pFanin; int i; + Abc_Obj_t * pFanin; + int i; if ( pObj->pCopy ) return pObj->pCopy; Abc_NtkDupObj( pNtkNew, pObj, 0 ); @@ -247,28 +238,11 @@ Abc_Obj_t * Abc_NtkFromBarBufs_rec( Abc_Ntk_t * pNtkNew, Abc_Obj_t * pObj ) Abc_ObjAddFanin( pObj->pCopy, Abc_NtkFromBarBufs_rec(pNtkNew, pFanin) ); return pObj->pCopy; } -Abc_Ntk_t * Abc_NtkFromBarBufsInt( Abc_Ntk_t * pNtkBase, Abc_Ntk_t * pNtk ) -{ - Abc_Ntk_t * pNtkNew; - Abc_Obj_t * pObj; - int i; - // start the network - pNtkNew = Abc_NtkStartFrom( pNtkBase, pNtk->ntkType, pNtk->ntkFunc ); - // move copy pointers - Abc_NtkForEachCi( pNtkBase, pObj, i ) - pObj->pNext->pCopy = pObj->pCopy; - Abc_NtkForEachCo( pNtkBase, pObj, i ) - pObj->pNext->pCopy = pObj->pCopy; - // construct the network - Abc_NtkForEachCo( pNtkBase, pObj, i ) - Abc_ObjAddFanin( pObj->pCopy, Abc_NtkFromBarBufs_rec(pNtkNew, Abc_ObjFanin0(pObj->pNext)) ); - return (pNtkBase->pCopy = pNtkNew); -} Abc_Ntk_t * Abc_NtkFromBarBufs( Abc_Ntk_t * pNtkBase, Abc_Ntk_t * pNtk ) { Abc_Ntk_t * pNtkNew, * pTemp; - Vec_Ptr_t * vBiBos, * vPiPos; - Abc_Obj_t * pObj; + Vec_Ptr_t * vLiMaps, * vLoMaps; + Abc_Obj_t * pObj, * pLiMap, * pLoMap; int i, k; assert( pNtkBase->pDesign != NULL ); assert( Abc_NtkIsNetlist(pNtk) ); @@ -279,39 +253,31 @@ Abc_Ntk_t * Abc_NtkFromBarBufs( Abc_Ntk_t * pNtkBase, Abc_Ntk_t * pNtk ) assert( Abc_NtkPoNum(pNtk) == Abc_NtkPoNum(pNtkBase) ); assert( Abc_NtkCiNum(pNtk) == Abc_NtkCiNum(pNtkBase) ); assert( Abc_NtkCoNum(pNtk) == Abc_NtkCoNum(pNtkBase) ); - // annotate PIs/POs of base with flops from optimized network - Abc_NtkCollectPiPos( pNtkBase, &vBiBos, &vPiPos ); - assert( Vec_PtrSize(vBiBos) == Abc_NtkLatchNum(pNtk) ); - assert( Vec_PtrSize(vPiPos) == Abc_NtkLatchNum(pNtk) ); + // start networks Abc_NtkCleanCopy_rec( pNtkBase ); - Abc_NtkCleanNext_rec( pNtkBase ); - Abc_NtkForEachPi( pNtk, pObj, i ) - Abc_NtkPi(pNtkBase, i)->pNext = pObj; - Abc_NtkForEachPo( pNtk, pObj, i ) - Abc_NtkPo(pNtkBase, i)->pNext = pObj; - Abc_NtkForEachLatch( pNtk, pObj, i ) - { - ((Abc_Obj_t *)Vec_PtrEntry(vBiBos, i))->pNext = Abc_ObjFanin0(pObj); - ((Abc_Obj_t *)Vec_PtrEntry(vPiPos, i))->pNext = Abc_ObjFanout0(pObj); - } - Vec_PtrFree( vBiBos ); - Vec_PtrFree( vPiPos ); - // duplicate the networks - pNtkNew = Abc_NtkFromBarBufsInt( pNtkBase, pNtk ); - // finalize the design + Vec_PtrForEachEntry( Abc_Ntk_t *, pNtkBase->pDesign->vModules, pTemp, i ) + pTemp->pCopy = Abc_NtkStartFrom( pTemp, pNtk->ntkType, pNtk->ntkFunc ); + pNtkNew = pNtkBase->pCopy; + // create the design pNtkNew->pDesign = Abc_LibCreate( pNtkBase->pDesign->pName ); - Abc_LibAddModel( pNtkNew->pDesign, pNtkNew ); Vec_PtrPush( pNtkNew->pDesign->vTops, pNtkNew ); Vec_PtrForEachEntry( Abc_Ntk_t *, pNtkBase->pDesign->vModules, pTemp, i ) - if ( pTemp != pNtkBase ) - { - pTemp = Abc_NtkFromBarBufsInt( pTemp, pNtk ); - Abc_LibAddModel( pNtkNew->pDesign, pTemp ); - } - // set node models - Vec_PtrForEachEntry( Abc_Ntk_t *, pNtkBase->pDesign->vModules, pTemp, i ) - Abc_NtkForEachBox( pTemp, pObj, k ) - pObj->pCopy->pData = Abc_ObjModel(pObj)->pCopy; + Abc_LibAddModel( pNtkNew->pDesign, pTemp->pCopy ); + // annotate PIs/POs of base with flops from optimized network + Abc_NtkCollectPiPos( pNtkBase, &vLiMaps, &vLoMaps ); + assert( Vec_PtrSize(vLiMaps) == Abc_NtkLatchNum(pNtk) ); + assert( Vec_PtrSize(vLoMaps) == Abc_NtkLatchNum(pNtk) ); + Vec_PtrForEachEntryTwo( Abc_Obj_t *, vLiMaps, Abc_Obj_t *, vLoMaps, pLiMap, pLoMap, i ) + { + pObj = Abc_NtkBox( pNtk, i ); + Abc_ObjFanin0(pObj)->pCopy = pLiMap->pCopy; + Abc_ObjFanout0(pObj)->pCopy = pLoMap->pCopy; + } + Vec_PtrFree( vLiMaps ); + Vec_PtrFree( vLoMaps ); + // create internal nodes + Abc_NtkForEachCo( pNtk, pObj, k ) + Abc_ObjAddFanin( pObj->pCopy, Abc_NtkFromBarBufs_rec(pNtkNew, Abc_ObjFanin0(pObj)) ); return pNtkNew; } -- cgit v1.2.3