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Diffstat (limited to 'abc70930/src/aig/ivy/ivyMan.c')
| -rw-r--r-- | abc70930/src/aig/ivy/ivyMan.c | 546 |
1 files changed, 0 insertions, 546 deletions
diff --git a/abc70930/src/aig/ivy/ivyMan.c b/abc70930/src/aig/ivy/ivyMan.c deleted file mode 100644 index 07faef85..00000000 --- a/abc70930/src/aig/ivy/ivyMan.c +++ /dev/null @@ -1,546 +0,0 @@ -/**CFile**************************************************************** - - FileName [ivyMan.c] - - SystemName [ABC: Logic synthesis and verification system.] - - PackageName [And-Inverter Graph package.] - - Synopsis [AIG manager.] - - Author [Alan Mishchenko] - - Affiliation [UC Berkeley] - - Date [Ver. 1.0. Started - May 11, 2006.] - - Revision [$Id: ivy_.c,v 1.00 2006/05/11 00:00:00 alanmi Exp $] - -***********************************************************************/ - -#include "ivy.h" - -//////////////////////////////////////////////////////////////////////// -/// DECLARATIONS /// -//////////////////////////////////////////////////////////////////////// - -//////////////////////////////////////////////////////////////////////// -/// FUNCTION DEFINITIONS /// -//////////////////////////////////////////////////////////////////////// - -/**Function************************************************************* - - Synopsis [Starts the AIG manager.] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -Ivy_Man_t * Ivy_ManStart() -{ - Ivy_Man_t * p; - // start the manager - p = ALLOC( Ivy_Man_t, 1 ); - memset( p, 0, sizeof(Ivy_Man_t) ); - // perform initializations - p->Ghost.Id = -1; - p->nTravIds = 1; - p->fCatchExor = 1; - // allocate arrays for nodes - p->vPis = Vec_PtrAlloc( 100 ); - p->vPos = Vec_PtrAlloc( 100 ); - p->vBufs = Vec_PtrAlloc( 100 ); - p->vObjs = Vec_PtrAlloc( 100 ); - // prepare the internal memory manager - Ivy_ManStartMemory( p ); - // create the constant node - p->pConst1 = Ivy_ManFetchMemory( p ); - p->pConst1->fPhase = 1; - Vec_PtrPush( p->vObjs, p->pConst1 ); - p->nCreated = 1; - // start the table - p->nTableSize = 10007; - p->pTable = ALLOC( int, p->nTableSize ); - memset( p->pTable, 0, sizeof(int) * p->nTableSize ); - return p; -} - -/**Function************************************************************* - - Synopsis [Duplicates the AIG manager.] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -Ivy_Man_t * Ivy_ManStartFrom( Ivy_Man_t * p ) -{ - Ivy_Man_t * pNew; - Ivy_Obj_t * pObj; - int i; - // create the new manager - pNew = Ivy_ManStart(); - // create the PIs - Ivy_ManConst1(p)->pEquiv = Ivy_ManConst1(pNew); - Ivy_ManForEachPi( p, pObj, i ) - pObj->pEquiv = Ivy_ObjCreatePi(pNew); - return pNew; -} - -/**Function************************************************************* - - Synopsis [Duplicates the AIG manager.] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -Ivy_Man_t * Ivy_ManDup( Ivy_Man_t * p ) -{ - Vec_Int_t * vNodes, * vLatches; - Ivy_Man_t * pNew; - Ivy_Obj_t * pObj; - int i; - // collect latches and nodes in the DFS order - vNodes = Ivy_ManDfsSeq( p, &vLatches ); - // create the new manager - pNew = Ivy_ManStart(); - // create the PIs - Ivy_ManConst1(p)->pEquiv = Ivy_ManConst1(pNew); - Ivy_ManForEachPi( p, pObj, i ) - pObj->pEquiv = Ivy_ObjCreatePi(pNew); - // create the fake PIs for latches - Ivy_ManForEachNodeVec( p, vLatches, pObj, i ) - pObj->pEquiv = Ivy_ObjCreatePi(pNew); - // duplicate internal nodes - Ivy_ManForEachNodeVec( p, vNodes, pObj, i ) - if ( Ivy_ObjIsBuf(pObj) ) - pObj->pEquiv = Ivy_ObjChild0Equiv(pObj); - else - pObj->pEquiv = Ivy_And( pNew, Ivy_ObjChild0Equiv(pObj), Ivy_ObjChild1Equiv(pObj) ); - // add the POs - Ivy_ManForEachPo( p, pObj, i ) - Ivy_ObjCreatePo( pNew, Ivy_ObjChild0Equiv(pObj) ); - // transform additional PI nodes into latches and connect them - Ivy_ManForEachNodeVec( p, vLatches, pObj, i ) - { - assert( !Ivy_ObjFaninC0(pObj) ); - pObj->pEquiv->Type = IVY_LATCH; - pObj->pEquiv->Init = pObj->Init; - Ivy_ObjConnect( pNew, pObj->pEquiv, Ivy_ObjChild0Equiv(pObj), NULL ); - } - // shrink the arrays - Vec_PtrShrink( pNew->vPis, Ivy_ManPiNum(p) ); - // update the counters of different objects - pNew->nObjs[IVY_PI] -= Ivy_ManLatchNum(p); - pNew->nObjs[IVY_LATCH] += Ivy_ManLatchNum(p); - // free arrays - Vec_IntFree( vNodes ); - Vec_IntFree( vLatches ); - // make sure structural hashing did not change anything - assert( Ivy_ManNodeNum(p) == Ivy_ManNodeNum(pNew) ); - assert( Ivy_ManLatchNum(p) == Ivy_ManLatchNum(pNew) ); - // check the resulting network - if ( !Ivy_ManCheck(pNew) ) - printf( "Ivy_ManMakeSeq(): The check has failed.\n" ); - return pNew; -} - -/**Function************************************************************* - - Synopsis [Stops the AIG manager.] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -Ivy_Man_t * Ivy_ManFrames( Ivy_Man_t * pMan, int nLatches, int nFrames, int fInit, Vec_Ptr_t ** pvMapping ) -{ - Vec_Ptr_t * vMapping; - Ivy_Man_t * pNew; - Ivy_Obj_t * pObj; - int i, f, nPis, nPos, nIdMax; - assert( Ivy_ManLatchNum(pMan) == 0 ); - assert( nFrames > 0 ); - // prepare the mapping - nPis = Ivy_ManPiNum(pMan) - nLatches; - nPos = Ivy_ManPoNum(pMan) - nLatches; - nIdMax = Ivy_ManObjIdMax(pMan); - // create the new manager - pNew = Ivy_ManStart(); - // set the starting values of latch inputs - for ( i = 0; i < nLatches; i++ ) - Ivy_ManPo(pMan, nPos+i)->pEquiv = fInit? Ivy_Not(Ivy_ManConst1(pNew)) : Ivy_ObjCreatePi(pNew); - // add timeframes - vMapping = Vec_PtrStart( nIdMax * nFrames + 1 ); - for ( f = 0; f < nFrames; f++ ) - { - // create PIs - Ivy_ManConst1(pMan)->pEquiv = Ivy_ManConst1(pNew); - for ( i = 0; i < nPis; i++ ) - Ivy_ManPi(pMan, i)->pEquiv = Ivy_ObjCreatePi(pNew); - // transfer values to latch outputs - for ( i = 0; i < nLatches; i++ ) - Ivy_ManPi(pMan, nPis+i)->pEquiv = Ivy_ManPo(pMan, nPos+i)->pEquiv; - // perform strashing - Ivy_ManForEachNode( pMan, pObj, i ) - pObj->pEquiv = Ivy_And( pNew, Ivy_ObjChild0Equiv(pObj), Ivy_ObjChild1Equiv(pObj) ); - // create POs - for ( i = 0; i < nPos; i++ ) - Ivy_ManPo(pMan, i)->pEquiv = Ivy_ObjCreatePo( pNew, Ivy_ObjChild0Equiv(Ivy_ManPo(pMan, i)) ); - // set the results of latch inputs - for ( i = 0; i < nLatches; i++ ) - Ivy_ManPo(pMan, nPos+i)->pEquiv = Ivy_ObjChild0Equiv(Ivy_ManPo(pMan, nPos+i)); - // save the pointers in this frame - Ivy_ManForEachObj( pMan, pObj, i ) - Vec_PtrWriteEntry( vMapping, f * nIdMax + i, pObj->pEquiv ); - } - // connect latches - if ( !fInit ) - for ( i = 0; i < nLatches; i++ ) - Ivy_ObjCreatePo( pNew, Ivy_ManPo(pMan, nPos+i)->pEquiv ); - // remove dangling nodes - Ivy_ManCleanup(pNew); - *pvMapping = vMapping; - // check the resulting network - if ( !Ivy_ManCheck(pNew) ) - printf( "Ivy_ManFrames(): The check has failed.\n" ); - return pNew; -} - - -/**Function************************************************************* - - Synopsis [Stops the AIG manager.] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -void Ivy_ManStop( Ivy_Man_t * p ) -{ - if ( p->time1 ) { PRT( "Update lev ", p->time1 ); } - if ( p->time2 ) { PRT( "Update levR ", p->time2 ); } -// Ivy_TableProfile( p ); -// if ( p->vFanouts ) Ivy_ManStopFanout( p ); - if ( p->vChunks ) Ivy_ManStopMemory( p ); - if ( p->vRequired ) Vec_IntFree( p->vRequired ); - if ( p->vPis ) Vec_PtrFree( p->vPis ); - if ( p->vPos ) Vec_PtrFree( p->vPos ); - if ( p->vBufs ) Vec_PtrFree( p->vBufs ); - if ( p->vObjs ) Vec_PtrFree( p->vObjs ); - free( p->pTable ); - free( p ); -} - -/**Function************************************************************* - - Synopsis [Removes nodes without fanout.] - - Description [Returns the number of dangling nodes removed.] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -int Ivy_ManCleanup( Ivy_Man_t * p ) -{ - Ivy_Obj_t * pNode; - int i, nNodesOld; - nNodesOld = Ivy_ManNodeNum(p); - Ivy_ManForEachObj( p, pNode, i ) - if ( Ivy_ObjIsNode(pNode) || Ivy_ObjIsLatch(pNode) || Ivy_ObjIsBuf(pNode) ) - if ( Ivy_ObjRefs(pNode) == 0 ) - Ivy_ObjDelete_rec( p, pNode, 1 ); -//printf( "Cleanup removed %d nodes.\n", nNodesOld - Ivy_ManNodeNum(p) ); - return nNodesOld - Ivy_ManNodeNum(p); -} - -/**Function************************************************************* - - Synopsis [Marks nodes reachable from the given one.] - - Description [Returns the number of dangling nodes removed.] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -void Ivy_ManCleanupSeq_rec( Ivy_Obj_t * pObj ) -{ - if ( Ivy_ObjIsMarkA(pObj) ) - return; - Ivy_ObjSetMarkA(pObj); - if ( pObj->pFanin0 != NULL ) - Ivy_ManCleanupSeq_rec( Ivy_ObjFanin0(pObj) ); - if ( pObj->pFanin1 != NULL ) - Ivy_ManCleanupSeq_rec( Ivy_ObjFanin1(pObj) ); -} - -/**Function************************************************************* - - Synopsis [Removes logic that does not feed into POs.] - - Description [Returns the number of dangling nodes removed.] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -int Ivy_ManCleanupSeq( Ivy_Man_t * p ) -{ - Vec_Ptr_t * vNodes; - Ivy_Obj_t * pObj; - int i, RetValue; - // mark the constant and PIs - Ivy_ObjSetMarkA( Ivy_ManConst1(p) ); - Ivy_ManForEachPi( p, pObj, i ) - Ivy_ObjSetMarkA( pObj ); - // mark nodes visited from POs - Ivy_ManForEachPo( p, pObj, i ) - Ivy_ManCleanupSeq_rec( pObj ); - // collect unmarked nodes - vNodes = Vec_PtrAlloc( 100 ); - Ivy_ManForEachObj( p, pObj, i ) - { - if ( Ivy_ObjIsMarkA(pObj) ) - Ivy_ObjClearMarkA(pObj); - else - Vec_PtrPush( vNodes, pObj ); - } - if ( Vec_PtrSize(vNodes) == 0 ) - { - Vec_PtrFree( vNodes ); -//printf( "Sequential sweep cleaned out %d nodes.\n", 0 ); - return 0; - } - // disconnect the marked objects - Vec_PtrForEachEntry( vNodes, pObj, i ) - Ivy_ObjDisconnect( p, pObj ); - // remove the dangling objects - Vec_PtrForEachEntry( vNodes, pObj, i ) - { - assert( Ivy_ObjIsNode(pObj) || Ivy_ObjIsLatch(pObj) || Ivy_ObjIsBuf(pObj) ); - assert( Ivy_ObjRefs(pObj) == 0 ); - // update node counters of the manager - p->nObjs[pObj->Type]--; - p->nDeleted++; - // delete buffer from the array of buffers - if ( p->fFanout && Ivy_ObjIsBuf(pObj) ) - Vec_PtrRemove( p->vBufs, pObj ); - // free the node - Vec_PtrWriteEntry( p->vObjs, pObj->Id, NULL ); - Ivy_ManRecycleMemory( p, pObj ); - } - // return the number of nodes freed - RetValue = Vec_PtrSize(vNodes); - Vec_PtrFree( vNodes ); -//printf( "Sequential sweep cleaned out %d nodes.\n", RetValue ); - return RetValue; -} - - -/**Function************************************************************* - - Synopsis [Checks if latches form self-loop.] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -int Ivy_ManLatchIsSelfFeed_rec( Ivy_Obj_t * pLatch, Ivy_Obj_t * pLatchRoot ) -{ - if ( !Ivy_ObjIsLatch(pLatch) && !Ivy_ObjIsBuf(pLatch) ) - return 0; - if ( pLatch == pLatchRoot ) - return 1; - return Ivy_ManLatchIsSelfFeed_rec( Ivy_ObjFanin0(pLatch), pLatchRoot ); -} - -/**Function************************************************************* - - Synopsis [Checks if latches form self-loop.] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -int Ivy_ManLatchIsSelfFeed( Ivy_Obj_t * pLatch ) -{ - if ( !Ivy_ObjIsLatch(pLatch) ) - return 0; - return Ivy_ManLatchIsSelfFeed_rec( Ivy_ObjFanin0(pLatch), pLatch ); -} - - -/**Function************************************************************* - - Synopsis [Returns the number of dangling nodes removed.] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -int Ivy_ManPropagateBuffers( Ivy_Man_t * p, int fUpdateLevel ) -{ - Ivy_Obj_t * pNode; - int LimitFactor = 100; - int NodeBeg = Ivy_ManNodeNum(p); - int nSteps; - for ( nSteps = 0; Vec_PtrSize(p->vBufs) > 0; nSteps++ ) - { - pNode = Vec_PtrEntryLast(p->vBufs); - while ( Ivy_ObjIsBuf(pNode) ) - pNode = Ivy_ObjReadFirstFanout( p, pNode ); - // check if this buffer should remain - if ( Ivy_ManLatchIsSelfFeed(pNode) ) - { - Vec_PtrPop(p->vBufs); - continue; - } -//printf( "Propagating buffer %d with input %d and output %d\n", Ivy_ObjFaninId0(pNode), Ivy_ObjFaninId0(Ivy_ObjFanin0(pNode)), pNode->Id ); -//printf( "Latch num %d\n", Ivy_ManLatchNum(p) ); - Ivy_NodeFixBufferFanins( p, pNode, fUpdateLevel ); - if ( nSteps > NodeBeg * LimitFactor ) - { - printf( "Structural hashing is not finished after %d forward latch moves.\n", NodeBeg * LimitFactor ); - printf( "This circuit cannot be forward-retimed completely. Quitting.\n" ); - break; - } - } -// printf( "Number of steps = %d. Nodes beg = %d. Nodes end = %d.\n", nSteps, NodeBeg, Ivy_ManNodeNum(p) ); - return nSteps; -} - -/**Function************************************************************* - - Synopsis [Stops the AIG manager.] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -void Ivy_ManPrintStats( Ivy_Man_t * p ) -{ - printf( "PI/PO = %d/%d ", Ivy_ManPiNum(p), Ivy_ManPoNum(p) ); - printf( "A = %7d. ", Ivy_ManAndNum(p) ); - printf( "L = %5d. ", Ivy_ManLatchNum(p) ); -// printf( "X = %d. ", Ivy_ManExorNum(p) ); -// printf( "B = %3d. ", Ivy_ManBufNum(p) ); - printf( "MaxID = %7d. ", Ivy_ManObjIdMax(p) ); -// printf( "Cre = %d. ", p->nCreated ); -// printf( "Del = %d. ", p->nDeleted ); - printf( "Lev = %3d. ", Ivy_ManLatchNum(p)? -1 : Ivy_ManLevels(p) ); - printf( "\n" ); -} - -/**Function************************************************************* - - Synopsis [Converts a combinational AIG manager into a sequential one.] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -void Ivy_ManMakeSeq( Ivy_Man_t * p, int nLatches, int * pInits ) -{ - Ivy_Obj_t * pObj, * pLatch; - Ivy_Init_t Init; - int i; - if ( nLatches == 0 ) - return; - assert( nLatches < Ivy_ManPiNum(p) && nLatches < Ivy_ManPoNum(p) ); - assert( Ivy_ManPiNum(p) == Vec_PtrSize(p->vPis) ); - assert( Ivy_ManPoNum(p) == Vec_PtrSize(p->vPos) ); - assert( Vec_PtrSize( p->vBufs ) == 0 ); - // create fanouts - if ( p->fFanout == 0 ) - Ivy_ManStartFanout( p ); - // collect the POs to be converted into latches - for ( i = 0; i < nLatches; i++ ) - { - // get the latch value - Init = pInits? pInits[i] : IVY_INIT_0; - // create latch - pObj = Ivy_ManPo( p, Ivy_ManPoNum(p) - nLatches + i ); - pLatch = Ivy_Latch( p, Ivy_ObjChild0(pObj), Init ); - Ivy_ObjDisconnect( p, pObj ); - // recycle the old PO object - Vec_PtrWriteEntry( p->vObjs, pObj->Id, NULL ); - Ivy_ManRecycleMemory( p, pObj ); - // convert the corresponding PI to a buffer and connect it to the latch - pObj = Ivy_ManPi( p, Ivy_ManPiNum(p) - nLatches + i ); - pObj->Type = IVY_BUF; - Ivy_ObjConnect( p, pObj, pLatch, NULL ); - // save the buffer - Vec_PtrPush( p->vBufs, pObj ); - } - // shrink the arrays - Vec_PtrShrink( p->vPis, Ivy_ManPiNum(p) - nLatches ); - Vec_PtrShrink( p->vPos, Ivy_ManPoNum(p) - nLatches ); - // update the counters of different objects - p->nObjs[IVY_PI] -= nLatches; - p->nObjs[IVY_PO] -= nLatches; - p->nObjs[IVY_BUF] += nLatches; - p->nDeleted -= 2 * nLatches; - // remove dangling nodes - Ivy_ManCleanup(p); - Ivy_ManCleanupSeq(p); -/* - // check for dangling nodes - Ivy_ManForEachObj( p, pObj, i ) - if ( !Ivy_ObjIsPi(pObj) && !Ivy_ObjIsPo(pObj) && !Ivy_ObjIsConst1(pObj) ) - { - assert( Ivy_ObjRefs(pObj) > 0 ); - assert( Ivy_ObjRefs(pObj) == Ivy_ObjFanoutNum(p, pObj) ); - } -*/ - // perform hashing by propagating the buffers - Ivy_ManPropagateBuffers( p, 0 ); - if ( Ivy_ManBufNum(p) ) - printf( "The number of remaining buffers is %d.\n", Ivy_ManBufNum(p) ); - // fix the levels - Ivy_ManResetLevels( p ); - // check the resulting network - if ( !Ivy_ManCheck(p) ) - printf( "Ivy_ManMakeSeq(): The check has failed.\n" ); -} - -//////////////////////////////////////////////////////////////////////// -/// END OF FILE /// -//////////////////////////////////////////////////////////////////////// - - |