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Diffstat (limited to 'src/base/abci/abcResub.c')
| -rw-r--r-- | src/base/abci/abcResub.c | 1951 |
1 files changed, 0 insertions, 1951 deletions
diff --git a/src/base/abci/abcResub.c b/src/base/abci/abcResub.c deleted file mode 100644 index 309c328d..00000000 --- a/src/base/abci/abcResub.c +++ /dev/null @@ -1,1951 +0,0 @@ -/**CFile**************************************************************** - - FileName [abcResub.c] - - SystemName [ABC: Logic synthesis and verification system.] - - PackageName [Network and node package.] - - Synopsis [Resubstitution manager.] - - Author [Alan Mishchenko] - - Affiliation [UC Berkeley] - - Date [Ver. 1.0. Started - June 20, 2005.] - - Revision [$Id: abcResub.c,v 1.00 2005/06/20 00:00:00 alanmi Exp $] - -***********************************************************************/ - -#include "abc.h" -#include "dec.h" - -//////////////////////////////////////////////////////////////////////// -/// DECLARATIONS /// -//////////////////////////////////////////////////////////////////////// - -#define ABC_RS_DIV1_MAX 150 // the max number of divisors to consider -#define ABC_RS_DIV2_MAX 500 // the max number of pair-wise divisors to consider - -typedef struct Abc_ManRes_t_ Abc_ManRes_t; -struct Abc_ManRes_t_ -{ - // paramers - int nLeavesMax; // the max number of leaves in the cone - int nDivsMax; // the max number of divisors in the cone - // representation of the cone - Abc_Obj_t * pRoot; // the root of the cone - int nLeaves; // the number of leaves - int nDivs; // the number of all divisor (including leaves) - int nMffc; // the size of MFFC - int nLastGain; // the gain the number of nodes - Vec_Ptr_t * vDivs; // the divisors - // representation of the simulation info - int nBits; // the number of simulation bits - int nWords; // the number of unsigneds for siminfo - Vec_Ptr_t * vSims; // simulation info - unsigned * pInfo; // pointer to simulation info - // observability don't-cares - unsigned * pCareSet; - // internal divisor storage - Vec_Ptr_t * vDivs1UP; // the single-node unate divisors - Vec_Ptr_t * vDivs1UN; // the single-node unate divisors - Vec_Ptr_t * vDivs1B; // the single-node binate divisors - Vec_Ptr_t * vDivs2UP0; // the double-node unate divisors - Vec_Ptr_t * vDivs2UP1; // the double-node unate divisors - Vec_Ptr_t * vDivs2UN0; // the double-node unate divisors - Vec_Ptr_t * vDivs2UN1; // the double-node unate divisors - // other data - Vec_Ptr_t * vTemp; // temporary array of nodes - // runtime statistics - int timeCut; - int timeTruth; - int timeRes; - int timeDiv; - int timeMffc; - int timeSim; - int timeRes1; - int timeResD; - int timeRes2; - int timeRes3; - int timeNtk; - int timeTotal; - // improvement statistics - int nUsedNodeC; - int nUsedNode0; - int nUsedNode1Or; - int nUsedNode1And; - int nUsedNode2Or; - int nUsedNode2And; - int nUsedNode2OrAnd; - int nUsedNode2AndOr; - int nUsedNode3OrAnd; - int nUsedNode3AndOr; - int nUsedNodeTotal; - int nTotalDivs; - int nTotalLeaves; - int nTotalGain; - int nNodesBeg; - int nNodesEnd; -}; - -// external procedures -static Abc_ManRes_t* Abc_ManResubStart( int nLeavesMax, int nDivsMax ); -static void Abc_ManResubStop( Abc_ManRes_t * p ); -static Dec_Graph_t * Abc_ManResubEval( Abc_ManRes_t * p, Abc_Obj_t * pRoot, Vec_Ptr_t * vLeaves, int nSteps, bool fUpdateLevel, int fVerbose ); -static void Abc_ManResubCleanup( Abc_ManRes_t * p ); -static void Abc_ManResubPrint( Abc_ManRes_t * p ); - -// other procedures -static int Abc_ManResubCollectDivs( Abc_ManRes_t * p, Abc_Obj_t * pRoot, Vec_Ptr_t * vLeaves, int Required ); -static void Abc_ManResubSimulate( Vec_Ptr_t * vDivs, int nLeaves, Vec_Ptr_t * vSims, int nLeavesMax, int nWords ); -static void Abc_ManResubPrintDivs( Abc_ManRes_t * p, Abc_Obj_t * pRoot, Vec_Ptr_t * vLeaves ); - -static void Abc_ManResubDivsS( Abc_ManRes_t * p, int Required ); -static void Abc_ManResubDivsD( Abc_ManRes_t * p, int Required ); -static Dec_Graph_t * Abc_ManResubQuit( Abc_ManRes_t * p ); -static Dec_Graph_t * Abc_ManResubDivs0( Abc_ManRes_t * p ); -static Dec_Graph_t * Abc_ManResubDivs1( Abc_ManRes_t * p, int Required ); -static Dec_Graph_t * Abc_ManResubDivs12( Abc_ManRes_t * p, int Required ); -static Dec_Graph_t * Abc_ManResubDivs2( Abc_ManRes_t * p, int Required ); -static Dec_Graph_t * Abc_ManResubDivs3( Abc_ManRes_t * p, int Required ); - -static Vec_Ptr_t * Abc_CutFactorLarge( Abc_Obj_t * pNode, int nLeavesMax ); -static int Abc_CutVolumeCheck( Abc_Obj_t * pNode, Vec_Ptr_t * vLeaves ); - -// don't-care manager -extern void * Abc_NtkDontCareAlloc( int nVarsMax, int nLevels, int fVerbose, int fVeryVerbose ); -extern void Abc_NtkDontCareClear( void * p ); -extern void Abc_NtkDontCareFree( void * p ); -extern int Abc_NtkDontCareCompute( void * p, Abc_Obj_t * pNode, Vec_Ptr_t * vLeaves, unsigned * puTruth ); - -extern int s_ResubTime; - -//////////////////////////////////////////////////////////////////////// -/// FUNCTION DEFINITIONS /// -//////////////////////////////////////////////////////////////////////// - -/**Function************************************************************* - - Synopsis [Performs incremental resynthesis of the AIG.] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -int Abc_NtkResubstitute( Abc_Ntk_t * pNtk, int nCutMax, int nStepsMax, int nLevelsOdc, bool fUpdateLevel, bool fVerbose, bool fVeryVerbose ) -{ - ProgressBar * pProgress; - Abc_ManRes_t * pManRes; - Abc_ManCut_t * pManCut; - void * pManOdc = NULL; - Dec_Graph_t * pFForm; - Vec_Ptr_t * vLeaves; - Abc_Obj_t * pNode; - int clk, clkStart = clock(); - int i, nNodes; - - assert( Abc_NtkIsStrash(pNtk) ); - - // cleanup the AIG - Abc_AigCleanup(pNtk->pManFunc); - // start the managers - pManCut = Abc_NtkManCutStart( nCutMax, 100000, 100000, 100000 ); - pManRes = Abc_ManResubStart( nCutMax, ABC_RS_DIV1_MAX ); - if ( nLevelsOdc > 0 ) - pManOdc = Abc_NtkDontCareAlloc( nCutMax, nLevelsOdc, fVerbose, fVeryVerbose ); - - // compute the reverse levels if level update is requested - if ( fUpdateLevel ) - Abc_NtkStartReverseLevels( pNtk, 0 ); - - if ( Abc_NtkLatchNum(pNtk) ) - Abc_NtkForEachLatch(pNtk, pNode, i) - pNode->pNext = pNode->pData; - - // resynthesize each node once - pManRes->nNodesBeg = Abc_NtkNodeNum(pNtk); - nNodes = Abc_NtkObjNumMax(pNtk); - pProgress = Extra_ProgressBarStart( stdout, nNodes ); - Abc_NtkForEachNode( pNtk, pNode, i ) - { - Extra_ProgressBarUpdate( pProgress, i, NULL ); - // skip the constant node -// if ( Abc_NodeIsConst(pNode) ) -// continue; - // skip persistant nodes - if ( Abc_NodeIsPersistant(pNode) ) - continue; - // skip the nodes with many fanouts - if ( Abc_ObjFanoutNum(pNode) > 1000 ) - continue; - // stop if all nodes have been tried once - if ( i >= nNodes ) - break; - - // compute a reconvergence-driven cut -clk = clock(); - vLeaves = Abc_NodeFindCut( pManCut, pNode, 0 ); -// vLeaves = Abc_CutFactorLarge( pNode, nCutMax ); -pManRes->timeCut += clock() - clk; -/* - if ( fVerbose && vLeaves ) - printf( "Node %6d : Leaves = %3d. Volume = %3d.\n", pNode->Id, Vec_PtrSize(vLeaves), Abc_CutVolumeCheck(pNode, vLeaves) ); - if ( vLeaves == NULL ) - continue; -*/ - // get the don't-cares - if ( pManOdc ) - { -clk = clock(); - Abc_NtkDontCareClear( pManOdc ); - Abc_NtkDontCareCompute( pManOdc, pNode, vLeaves, pManRes->pCareSet ); -pManRes->timeTruth += clock() - clk; - } - - // evaluate this cut -clk = clock(); - pFForm = Abc_ManResubEval( pManRes, pNode, vLeaves, nStepsMax, fUpdateLevel, fVerbose ); -// Vec_PtrFree( vLeaves ); -// Abc_ManResubCleanup( pManRes ); -pManRes->timeRes += clock() - clk; - if ( pFForm == NULL ) - continue; - pManRes->nTotalGain += pManRes->nLastGain; -/* - if ( pManRes->nLeaves == 4 && pManRes->nMffc == 2 && pManRes->nLastGain == 1 ) - { - printf( "%6d : L = %2d. V = %2d. Mffc = %2d. Divs = %3d. Up = %3d. Un = %3d. B = %3d.\n", - pNode->Id, pManRes->nLeaves, Abc_CutVolumeCheck(pNode, vLeaves), pManRes->nMffc, pManRes->nDivs, - pManRes->vDivs1UP->nSize, pManRes->vDivs1UN->nSize, pManRes->vDivs1B->nSize ); - Abc_ManResubPrintDivs( pManRes, pNode, vLeaves ); - } -*/ - // acceptable replacement found, update the graph -clk = clock(); - Dec_GraphUpdateNetwork( pNode, pFForm, fUpdateLevel, pManRes->nLastGain ); -pManRes->timeNtk += clock() - clk; - Dec_GraphFree( pFForm ); - } - Extra_ProgressBarStop( pProgress ); -pManRes->timeTotal = clock() - clkStart; - pManRes->nNodesEnd = Abc_NtkNodeNum(pNtk); - - // print statistics - if ( fVerbose ) - Abc_ManResubPrint( pManRes ); - - // delete the managers - Abc_ManResubStop( pManRes ); - Abc_NtkManCutStop( pManCut ); - if ( pManOdc ) Abc_NtkDontCareFree( pManOdc ); - - // clean the data field - Abc_NtkForEachObj( pNtk, pNode, i ) - pNode->pData = NULL; - - if ( Abc_NtkLatchNum(pNtk) ) - Abc_NtkForEachLatch(pNtk, pNode, i) - pNode->pData = pNode->pNext, pNode->pNext = NULL; - - // put the nodes into the DFS order and reassign their IDs - Abc_NtkReassignIds( pNtk ); -// Abc_AigCheckFaninOrder( pNtk->pManFunc ); - // fix the levels - if ( fUpdateLevel ) - Abc_NtkStopReverseLevels( pNtk ); - else - Abc_NtkLevel( pNtk ); - // check - if ( !Abc_NtkCheck( pNtk ) ) - { - printf( "Abc_NtkRefactor: The network check has failed.\n" ); - return 0; - } -s_ResubTime = clock() - clkStart; - return 1; -} - - - - -/**Function************************************************************* - - Synopsis [] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -Abc_ManRes_t * Abc_ManResubStart( int nLeavesMax, int nDivsMax ) -{ - Abc_ManRes_t * p; - unsigned * pData; - int i, k; - assert( sizeof(unsigned) == 4 ); - p = ALLOC( Abc_ManRes_t, 1 ); - memset( p, 0, sizeof(Abc_ManRes_t) ); - p->nLeavesMax = nLeavesMax; - p->nDivsMax = nDivsMax; - p->vDivs = Vec_PtrAlloc( p->nDivsMax ); - // allocate simulation info - p->nBits = (1 << p->nLeavesMax); - p->nWords = (p->nBits <= 32)? 1 : (p->nBits / 32); - p->pInfo = ALLOC( unsigned, p->nWords * (p->nDivsMax + 1) ); - memset( p->pInfo, 0, sizeof(unsigned) * p->nWords * p->nLeavesMax ); - p->vSims = Vec_PtrAlloc( p->nDivsMax ); - for ( i = 0; i < p->nDivsMax; i++ ) - Vec_PtrPush( p->vSims, p->pInfo + i * p->nWords ); - // assign the care set - p->pCareSet = p->pInfo + p->nDivsMax * p->nWords; - Abc_InfoFill( p->pCareSet, p->nWords ); - // set elementary truth tables - for ( k = 0; k < p->nLeavesMax; k++ ) - { - pData = p->vSims->pArray[k]; - for ( i = 0; i < p->nBits; i++ ) - if ( i & (1 << k) ) - pData[i>>5] |= (1 << (i&31)); - } - // create the remaining divisors - p->vDivs1UP = Vec_PtrAlloc( p->nDivsMax ); - p->vDivs1UN = Vec_PtrAlloc( p->nDivsMax ); - p->vDivs1B = Vec_PtrAlloc( p->nDivsMax ); - p->vDivs2UP0 = Vec_PtrAlloc( p->nDivsMax ); - p->vDivs2UP1 = Vec_PtrAlloc( p->nDivsMax ); - p->vDivs2UN0 = Vec_PtrAlloc( p->nDivsMax ); - p->vDivs2UN1 = Vec_PtrAlloc( p->nDivsMax ); - p->vTemp = Vec_PtrAlloc( p->nDivsMax ); - return p; -} - -/**Function************************************************************* - - Synopsis [] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -void Abc_ManResubStop( Abc_ManRes_t * p ) -{ - Vec_PtrFree( p->vDivs ); - Vec_PtrFree( p->vSims ); - Vec_PtrFree( p->vDivs1UP ); - Vec_PtrFree( p->vDivs1UN ); - Vec_PtrFree( p->vDivs1B ); - Vec_PtrFree( p->vDivs2UP0 ); - Vec_PtrFree( p->vDivs2UP1 ); - Vec_PtrFree( p->vDivs2UN0 ); - Vec_PtrFree( p->vDivs2UN1 ); - Vec_PtrFree( p->vTemp ); - free( p->pInfo ); - free( p ); -} - -/**Function************************************************************* - - Synopsis [] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -void Abc_ManResubPrint( Abc_ManRes_t * p ) -{ - printf( "Used constants = %6d. ", p->nUsedNodeC ); PRT( "Cuts ", p->timeCut ); - printf( "Used replacements = %6d. ", p->nUsedNode0 ); PRT( "Resub ", p->timeRes ); - printf( "Used single ORs = %6d. ", p->nUsedNode1Or ); PRT( " Div ", p->timeDiv ); - printf( "Used single ANDs = %6d. ", p->nUsedNode1And ); PRT( " Mffc ", p->timeMffc ); - printf( "Used double ORs = %6d. ", p->nUsedNode2Or ); PRT( " Sim ", p->timeSim ); - printf( "Used double ANDs = %6d. ", p->nUsedNode2And ); PRT( " 1 ", p->timeRes1 ); - printf( "Used OR-AND = %6d. ", p->nUsedNode2OrAnd ); PRT( " D ", p->timeResD ); - printf( "Used AND-OR = %6d. ", p->nUsedNode2AndOr ); PRT( " 2 ", p->timeRes2 ); - printf( "Used OR-2ANDs = %6d. ", p->nUsedNode3OrAnd ); PRT( "Truth ", p->timeTruth ); //PRT( " 3 ", p->timeRes3 ); - printf( "Used AND-2ORs = %6d. ", p->nUsedNode3AndOr ); PRT( "AIG ", p->timeNtk ); - printf( "TOTAL = %6d. ", p->nUsedNodeC + - p->nUsedNode0 + - p->nUsedNode1Or + - p->nUsedNode1And + - p->nUsedNode2Or + - p->nUsedNode2And + - p->nUsedNode2OrAnd + - p->nUsedNode2AndOr + - p->nUsedNode3OrAnd + - p->nUsedNode3AndOr - ); PRT( "TOTAL ", p->timeTotal ); - printf( "Total leaves = %8d.\n", p->nTotalLeaves ); - printf( "Total divisors = %8d.\n", p->nTotalDivs ); -// printf( "Total gain = %8d.\n", p->nTotalGain ); - printf( "Gain = %8d. (%6.2f %%).\n", p->nNodesBeg-p->nNodesEnd, 100.0*(p->nNodesBeg-p->nNodesEnd)/p->nNodesBeg ); -} - - -/**Function************************************************************* - - Synopsis [] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -void Abc_ManResubCollectDivs_rec( Abc_Obj_t * pNode, Vec_Ptr_t * vInternal ) -{ - // skip visited nodes - if ( Abc_NodeIsTravIdCurrent(pNode) ) - return; - Abc_NodeSetTravIdCurrent(pNode); - // collect the fanins - Abc_ManResubCollectDivs_rec( Abc_ObjFanin0(pNode), vInternal ); - Abc_ManResubCollectDivs_rec( Abc_ObjFanin1(pNode), vInternal ); - // collect the internal node - if ( pNode->fMarkA == 0 ) - Vec_PtrPush( vInternal, pNode ); -} - -/**Function************************************************************* - - Synopsis [] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -int Abc_ManResubCollectDivs( Abc_ManRes_t * p, Abc_Obj_t * pRoot, Vec_Ptr_t * vLeaves, int Required ) -{ - Abc_Obj_t * pNode, * pFanout; - int i, k, Limit, Counter; - - Vec_PtrClear( p->vDivs1UP ); - Vec_PtrClear( p->vDivs1UN ); - Vec_PtrClear( p->vDivs1B ); - - // add the leaves of the cuts to the divisors - Vec_PtrClear( p->vDivs ); - Abc_NtkIncrementTravId( pRoot->pNtk ); - Vec_PtrForEachEntry( vLeaves, pNode, i ) - { - Vec_PtrPush( p->vDivs, pNode ); - Abc_NodeSetTravIdCurrent( pNode ); - } - - // mark nodes in the MFFC - Vec_PtrForEachEntry( p->vTemp, pNode, i ) - pNode->fMarkA = 1; - // collect the cone (without MFFC) - Abc_ManResubCollectDivs_rec( pRoot, p->vDivs ); - // unmark the current MFFC - Vec_PtrForEachEntry( p->vTemp, pNode, i ) - pNode->fMarkA = 0; - - // check if the number of divisors is not exceeded - if ( Vec_PtrSize(p->vDivs) - Vec_PtrSize(vLeaves) + Vec_PtrSize(p->vTemp) >= Vec_PtrSize(p->vSims) - p->nLeavesMax ) - return 0; - - // get the number of divisors to collect - Limit = Vec_PtrSize(p->vSims) - p->nLeavesMax - (Vec_PtrSize(p->vDivs) - Vec_PtrSize(vLeaves) + Vec_PtrSize(p->vTemp)); - - // explore the fanouts, which are not in the MFFC - Counter = 0; - Vec_PtrForEachEntry( p->vDivs, pNode, i ) - { - if ( Abc_ObjFanoutNum(pNode) > 100 ) - { -// printf( "%d ", Abc_ObjFanoutNum(pNode) ); - continue; - } - // if the fanout has both fanins in the set, add it - Abc_ObjForEachFanout( pNode, pFanout, k ) - { - if ( Abc_NodeIsTravIdCurrent(pFanout) || Abc_ObjIsCo(pFanout) || (int)pFanout->Level > Required ) - continue; - if ( Abc_NodeIsTravIdCurrent(Abc_ObjFanin0(pFanout)) && Abc_NodeIsTravIdCurrent(Abc_ObjFanin1(pFanout)) ) - { - if ( Abc_ObjFanin0(pFanout) == pRoot || Abc_ObjFanin1(pFanout) == pRoot ) - continue; - Vec_PtrPush( p->vDivs, pFanout ); - Abc_NodeSetTravIdCurrent( pFanout ); - // quit computing divisors if there is too many of them - if ( ++Counter == Limit ) - goto Quits; - } - } - } - -Quits : - // get the number of divisors - p->nDivs = Vec_PtrSize(p->vDivs); - - // add the nodes in the MFFC - Vec_PtrForEachEntry( p->vTemp, pNode, i ) - Vec_PtrPush( p->vDivs, pNode ); - assert( pRoot == Vec_PtrEntryLast(p->vDivs) ); - - assert( Vec_PtrSize(p->vDivs) - Vec_PtrSize(vLeaves) <= Vec_PtrSize(p->vSims) - p->nLeavesMax ); - return 1; -} - -/**Function************************************************************* - - Synopsis [] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -void Abc_ManResubPrintDivs( Abc_ManRes_t * p, Abc_Obj_t * pRoot, Vec_Ptr_t * vLeaves ) -{ - Abc_Obj_t * pFanin, * pNode; - int i, k; - // print the nodes - Vec_PtrForEachEntry( p->vDivs, pNode, i ) - { - if ( i < Vec_PtrSize(vLeaves) ) - { - printf( "%6d : %c\n", pNode->Id, 'a'+i ); - continue; - } - printf( "%6d : %2d = ", pNode->Id, i ); - // find the first fanin - Vec_PtrForEachEntry( p->vDivs, pFanin, k ) - if ( Abc_ObjFanin0(pNode) == pFanin ) - break; - if ( k < Vec_PtrSize(vLeaves) ) - printf( "%c", 'a' + k ); - else - printf( "%d", k ); - printf( "%s ", Abc_ObjFaninC0(pNode)? "\'" : "" ); - // find the second fanin - Vec_PtrForEachEntry( p->vDivs, pFanin, k ) - if ( Abc_ObjFanin1(pNode) == pFanin ) - break; - if ( k < Vec_PtrSize(vLeaves) ) - printf( "%c", 'a' + k ); - else - printf( "%d", k ); - printf( "%s ", Abc_ObjFaninC1(pNode)? "\'" : "" ); - if ( pNode == pRoot ) - printf( " root" ); - printf( "\n" ); - } - printf( "\n" ); -} - - -/**Function************************************************************* - - Synopsis [Performs simulation.] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -void Abc_ManResubSimulate( Vec_Ptr_t * vDivs, int nLeaves, Vec_Ptr_t * vSims, int nLeavesMax, int nWords ) -{ - Abc_Obj_t * pObj; - unsigned * puData0, * puData1, * puData; - int i, k; - assert( Vec_PtrSize(vDivs) - nLeaves <= Vec_PtrSize(vSims) - nLeavesMax ); - // simulate - Vec_PtrForEachEntry( vDivs, pObj, i ) - { - if ( i < nLeaves ) - { // initialize the leaf - pObj->pData = Vec_PtrEntry( vSims, i ); - continue; - } - // set storage for the node's simulation info - pObj->pData = Vec_PtrEntry( vSims, i - nLeaves + nLeavesMax ); - // get pointer to the simulation info - puData = pObj->pData; - puData0 = Abc_ObjFanin0(pObj)->pData; - puData1 = Abc_ObjFanin1(pObj)->pData; - // simulate - if ( Abc_ObjFaninC0(pObj) && Abc_ObjFaninC1(pObj) ) - for ( k = 0; k < nWords; k++ ) - puData[k] = ~puData0[k] & ~puData1[k]; - else if ( Abc_ObjFaninC0(pObj) ) - for ( k = 0; k < nWords; k++ ) - puData[k] = ~puData0[k] & puData1[k]; - else if ( Abc_ObjFaninC1(pObj) ) - for ( k = 0; k < nWords; k++ ) - puData[k] = puData0[k] & ~puData1[k]; - else - for ( k = 0; k < nWords; k++ ) - puData[k] = puData0[k] & puData1[k]; - } - // normalize - Vec_PtrForEachEntry( vDivs, pObj, i ) - { - puData = pObj->pData; - pObj->fPhase = (puData[0] & 1); - if ( pObj->fPhase ) - for ( k = 0; k < nWords; k++ ) - puData[k] = ~puData[k]; - } -} - - -/**Function************************************************************* - - Synopsis [] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -Dec_Graph_t * Abc_ManResubQuit0( Abc_Obj_t * pRoot, Abc_Obj_t * pObj ) -{ - Dec_Graph_t * pGraph; - Dec_Edge_t eRoot; - pGraph = Dec_GraphCreate( 1 ); - Dec_GraphNode( pGraph, 0 )->pFunc = pObj; - eRoot = Dec_EdgeCreate( 0, pObj->fPhase ); - Dec_GraphSetRoot( pGraph, eRoot ); - if ( pRoot->fPhase ) - Dec_GraphComplement( pGraph ); - return pGraph; -} - -/**Function************************************************************* - - Synopsis [] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -Dec_Graph_t * Abc_ManResubQuit1( Abc_Obj_t * pRoot, Abc_Obj_t * pObj0, Abc_Obj_t * pObj1, int fOrGate ) -{ - Dec_Graph_t * pGraph; - Dec_Edge_t eRoot, eNode0, eNode1; - assert( pObj0 != pObj1 ); - assert( !Abc_ObjIsComplement(pObj0) ); - assert( !Abc_ObjIsComplement(pObj1) ); - pGraph = Dec_GraphCreate( 2 ); - Dec_GraphNode( pGraph, 0 )->pFunc = pObj0; - Dec_GraphNode( pGraph, 1 )->pFunc = pObj1; - eNode0 = Dec_EdgeCreate( 0, pObj0->fPhase ); - eNode1 = Dec_EdgeCreate( 1, pObj1->fPhase ); - if ( fOrGate ) - eRoot = Dec_GraphAddNodeOr( pGraph, eNode0, eNode1 ); - else - eRoot = Dec_GraphAddNodeAnd( pGraph, eNode0, eNode1 ); - Dec_GraphSetRoot( pGraph, eRoot ); - if ( pRoot->fPhase ) - Dec_GraphComplement( pGraph ); - return pGraph; -} - -/**Function************************************************************* - - Synopsis [] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -Dec_Graph_t * Abc_ManResubQuit21( Abc_Obj_t * pRoot, Abc_Obj_t * pObj0, Abc_Obj_t * pObj1, Abc_Obj_t * pObj2, int fOrGate ) -{ - Dec_Graph_t * pGraph; - Dec_Edge_t eRoot, eNode0, eNode1, eNode2; - assert( pObj0 != pObj1 ); - assert( !Abc_ObjIsComplement(pObj0) ); - assert( !Abc_ObjIsComplement(pObj1) ); - assert( !Abc_ObjIsComplement(pObj2) ); - pGraph = Dec_GraphCreate( 3 ); - Dec_GraphNode( pGraph, 0 )->pFunc = pObj0; - Dec_GraphNode( pGraph, 1 )->pFunc = pObj1; - Dec_GraphNode( pGraph, 2 )->pFunc = pObj2; - eNode0 = Dec_EdgeCreate( 0, pObj0->fPhase ); - eNode1 = Dec_EdgeCreate( 1, pObj1->fPhase ); - eNode2 = Dec_EdgeCreate( 2, pObj2->fPhase ); - if ( fOrGate ) - { - eRoot = Dec_GraphAddNodeOr( pGraph, eNode0, eNode1 ); - eRoot = Dec_GraphAddNodeOr( pGraph, eNode2, eRoot ); - } - else - { - eRoot = Dec_GraphAddNodeAnd( pGraph, eNode0, eNode1 ); - eRoot = Dec_GraphAddNodeAnd( pGraph, eNode2, eRoot ); - } - Dec_GraphSetRoot( pGraph, eRoot ); - if ( pRoot->fPhase ) - Dec_GraphComplement( pGraph ); - return pGraph; -} - -/**Function************************************************************* - - Synopsis [] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -Dec_Graph_t * Abc_ManResubQuit2( Abc_Obj_t * pRoot, Abc_Obj_t * pObj0, Abc_Obj_t * pObj1, Abc_Obj_t * pObj2, int fOrGate ) -{ - Dec_Graph_t * pGraph; - Dec_Edge_t eRoot, ePrev, eNode0, eNode1, eNode2; - assert( pObj0 != pObj1 ); - assert( pObj0 != pObj2 ); - assert( pObj1 != pObj2 ); - assert( !Abc_ObjIsComplement(pObj0) ); - pGraph = Dec_GraphCreate( 3 ); - Dec_GraphNode( pGraph, 0 )->pFunc = Abc_ObjRegular(pObj0); - Dec_GraphNode( pGraph, 1 )->pFunc = Abc_ObjRegular(pObj1); - Dec_GraphNode( pGraph, 2 )->pFunc = Abc_ObjRegular(pObj2); - eNode0 = Dec_EdgeCreate( 0, Abc_ObjRegular(pObj0)->fPhase ); - if ( Abc_ObjIsComplement(pObj1) && Abc_ObjIsComplement(pObj2) ) - { - eNode1 = Dec_EdgeCreate( 1, Abc_ObjRegular(pObj1)->fPhase ); - eNode2 = Dec_EdgeCreate( 2, Abc_ObjRegular(pObj2)->fPhase ); - ePrev = Dec_GraphAddNodeOr( pGraph, eNode1, eNode2 ); - } - else - { - eNode1 = Dec_EdgeCreate( 1, Abc_ObjRegular(pObj1)->fPhase ^ Abc_ObjIsComplement(pObj1) ); - eNode2 = Dec_EdgeCreate( 2, Abc_ObjRegular(pObj2)->fPhase ^ Abc_ObjIsComplement(pObj2) ); - ePrev = Dec_GraphAddNodeAnd( pGraph, eNode1, eNode2 ); - } - if ( fOrGate ) - eRoot = Dec_GraphAddNodeOr( pGraph, eNode0, ePrev ); - else - eRoot = Dec_GraphAddNodeAnd( pGraph, eNode0, ePrev ); - Dec_GraphSetRoot( pGraph, eRoot ); - if ( pRoot->fPhase ) - Dec_GraphComplement( pGraph ); - return pGraph; -} - -/**Function************************************************************* - - Synopsis [] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -Dec_Graph_t * Abc_ManResubQuit3( Abc_Obj_t * pRoot, Abc_Obj_t * pObj0, Abc_Obj_t * pObj1, Abc_Obj_t * pObj2, Abc_Obj_t * pObj3, int fOrGate ) -{ - Dec_Graph_t * pGraph; - Dec_Edge_t eRoot, ePrev0, ePrev1, eNode0, eNode1, eNode2, eNode3; - assert( pObj0 != pObj1 ); - assert( pObj2 != pObj3 ); - pGraph = Dec_GraphCreate( 4 ); - Dec_GraphNode( pGraph, 0 )->pFunc = Abc_ObjRegular(pObj0); - Dec_GraphNode( pGraph, 1 )->pFunc = Abc_ObjRegular(pObj1); - Dec_GraphNode( pGraph, 2 )->pFunc = Abc_ObjRegular(pObj2); - Dec_GraphNode( pGraph, 3 )->pFunc = Abc_ObjRegular(pObj3); - if ( Abc_ObjIsComplement(pObj0) && Abc_ObjIsComplement(pObj1) ) - { - eNode0 = Dec_EdgeCreate( 0, Abc_ObjRegular(pObj0)->fPhase ); - eNode1 = Dec_EdgeCreate( 1, Abc_ObjRegular(pObj1)->fPhase ); - ePrev0 = Dec_GraphAddNodeOr( pGraph, eNode0, eNode1 ); - if ( Abc_ObjIsComplement(pObj2) && Abc_ObjIsComplement(pObj3) ) - { - eNode2 = Dec_EdgeCreate( 2, Abc_ObjRegular(pObj2)->fPhase ); - eNode3 = Dec_EdgeCreate( 3, Abc_ObjRegular(pObj3)->fPhase ); - ePrev1 = Dec_GraphAddNodeOr( pGraph, eNode2, eNode3 ); - } - else - { - eNode2 = Dec_EdgeCreate( 2, Abc_ObjRegular(pObj2)->fPhase ^ Abc_ObjIsComplement(pObj2) ); - eNode3 = Dec_EdgeCreate( 3, Abc_ObjRegular(pObj3)->fPhase ^ Abc_ObjIsComplement(pObj3) ); - ePrev1 = Dec_GraphAddNodeAnd( pGraph, eNode2, eNode3 ); - } - } - else - { - eNode0 = Dec_EdgeCreate( 0, Abc_ObjRegular(pObj0)->fPhase ^ Abc_ObjIsComplement(pObj0) ); - eNode1 = Dec_EdgeCreate( 1, Abc_ObjRegular(pObj1)->fPhase ^ Abc_ObjIsComplement(pObj1) ); - ePrev0 = Dec_GraphAddNodeAnd( pGraph, eNode0, eNode1 ); - if ( Abc_ObjIsComplement(pObj2) && Abc_ObjIsComplement(pObj3) ) - { - eNode2 = Dec_EdgeCreate( 2, Abc_ObjRegular(pObj2)->fPhase ); - eNode3 = Dec_EdgeCreate( 3, Abc_ObjRegular(pObj3)->fPhase ); - ePrev1 = Dec_GraphAddNodeOr( pGraph, eNode2, eNode3 ); - } - else - { - eNode2 = Dec_EdgeCreate( 2, Abc_ObjRegular(pObj2)->fPhase ^ Abc_ObjIsComplement(pObj2) ); - eNode3 = Dec_EdgeCreate( 3, Abc_ObjRegular(pObj3)->fPhase ^ Abc_ObjIsComplement(pObj3) ); - ePrev1 = Dec_GraphAddNodeAnd( pGraph, eNode2, eNode3 ); - } - } - if ( fOrGate ) - eRoot = Dec_GraphAddNodeOr( pGraph, ePrev0, ePrev1 ); - else - eRoot = Dec_GraphAddNodeAnd( pGraph, ePrev0, ePrev1 ); - Dec_GraphSetRoot( pGraph, eRoot ); - if ( pRoot->fPhase ) - Dec_GraphComplement( pGraph ); - return pGraph; -} - - - - -/**Function************************************************************* - - Synopsis [Derives single-node unate/binate divisors.] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -void Abc_ManResubDivsS( Abc_ManRes_t * p, int Required ) -{ - Abc_Obj_t * pObj; - unsigned * puData, * puDataR; - int i, w; - Vec_PtrClear( p->vDivs1UP ); - Vec_PtrClear( p->vDivs1UN ); - Vec_PtrClear( p->vDivs1B ); - puDataR = p->pRoot->pData; - Vec_PtrForEachEntryStop( p->vDivs, pObj, i, p->nDivs ) - { - if ( (int)pObj->Level > Required - 1 ) - continue; - - puData = pObj->pData; - // check positive containment - for ( w = 0; w < p->nWords; w++ ) -// if ( puData[w] & ~puDataR[w] ) - if ( puData[w] & ~puDataR[w] & p->pCareSet[w] ) // care set - break; - if ( w == p->nWords ) - { - Vec_PtrPush( p->vDivs1UP, pObj ); - continue; - } - // check negative containment - for ( w = 0; w < p->nWords; w++ ) -// if ( ~puData[w] & puDataR[w] ) - if ( ~puData[w] & puDataR[w] & p->pCareSet[w] ) // care set - break; - if ( w == p->nWords ) - { - Vec_PtrPush( p->vDivs1UN, pObj ); - continue; - } - // add the node to binates - Vec_PtrPush( p->vDivs1B, pObj ); - } -} - -/**Function************************************************************* - - Synopsis [Derives double-node unate/binate divisors.] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -void Abc_ManResubDivsD( Abc_ManRes_t * p, int Required ) -{ - Abc_Obj_t * pObj0, * pObj1; - unsigned * puData0, * puData1, * puDataR; - int i, k, w; - Vec_PtrClear( p->vDivs2UP0 ); - Vec_PtrClear( p->vDivs2UP1 ); - Vec_PtrClear( p->vDivs2UN0 ); - Vec_PtrClear( p->vDivs2UN1 ); - puDataR = p->pRoot->pData; - Vec_PtrForEachEntry( p->vDivs1B, pObj0, i ) - { - if ( (int)pObj0->Level > Required - 2 ) - continue; - - puData0 = pObj0->pData; - Vec_PtrForEachEntryStart( p->vDivs1B, pObj1, k, i + 1 ) - { - if ( (int)pObj1->Level > Required - 2 ) - continue; - - puData1 = pObj1->pData; - - if ( Vec_PtrSize(p->vDivs2UP0) < ABC_RS_DIV2_MAX ) - { - // get positive unate divisors - for ( w = 0; w < p->nWords; w++ ) -// if ( (puData0[w] & puData1[w]) & ~puDataR[w] ) - if ( (puData0[w] & puData1[w]) & ~puDataR[w] & p->pCareSet[w] ) // care set - break; - if ( w == p->nWords ) - { - Vec_PtrPush( p->vDivs2UP0, pObj0 ); - Vec_PtrPush( p->vDivs2UP1, pObj1 ); - } - for ( w = 0; w < p->nWords; w++ ) -// if ( (~puData0[w] & puData1[w]) & ~puDataR[w] ) - if ( (~puData0[w] & puData1[w]) & ~puDataR[w] & p->pCareSet[w] ) // care set - break; - if ( w == p->nWords ) - { - Vec_PtrPush( p->vDivs2UP0, Abc_ObjNot(pObj0) ); - Vec_PtrPush( p->vDivs2UP1, pObj1 ); - } - for ( w = 0; w < p->nWords; w++ ) -// if ( (puData0[w] & ~puData1[w]) & ~puDataR[w] ) - if ( (puData0[w] & ~puData1[w]) & ~puDataR[w] & p->pCareSet[w] ) // care set - break; - if ( w == p->nWords ) - { - Vec_PtrPush( p->vDivs2UP0, pObj0 ); - Vec_PtrPush( p->vDivs2UP1, Abc_ObjNot(pObj1) ); - } - for ( w = 0; w < p->nWords; w++ ) -// if ( (puData0[w] | puData1[w]) & ~puDataR[w] ) - if ( (puData0[w] | puData1[w]) & ~puDataR[w] & p->pCareSet[w] ) // care set - break; - if ( w == p->nWords ) - { - Vec_PtrPush( p->vDivs2UP0, Abc_ObjNot(pObj0) ); - Vec_PtrPush( p->vDivs2UP1, Abc_ObjNot(pObj1) ); - } - } - - if ( Vec_PtrSize(p->vDivs2UN0) < ABC_RS_DIV2_MAX ) - { - // get negative unate divisors - for ( w = 0; w < p->nWords; w++ ) -// if ( ~(puData0[w] & puData1[w]) & puDataR[w] ) - if ( ~(puData0[w] & puData1[w]) & puDataR[w] & p->pCareSet[w] ) // care set - break; - if ( w == p->nWords ) - { - Vec_PtrPush( p->vDivs2UN0, pObj0 ); - Vec_PtrPush( p->vDivs2UN1, pObj1 ); - } - for ( w = 0; w < p->nWords; w++ ) -// if ( ~(~puData0[w] & puData1[w]) & puDataR[w] ) - if ( ~(~puData0[w] & puData1[w]) & puDataR[w] & p->pCareSet[w] ) // care set - break; - if ( w == p->nWords ) - { - Vec_PtrPush( p->vDivs2UN0, Abc_ObjNot(pObj0) ); - Vec_PtrPush( p->vDivs2UN1, pObj1 ); - } - for ( w = 0; w < p->nWords; w++ ) -// if ( ~(puData0[w] & ~puData1[w]) & puDataR[w] ) - if ( ~(puData0[w] & ~puData1[w]) & puDataR[w] & p->pCareSet[w] ) // care set - break; - if ( w == p->nWords ) - { - Vec_PtrPush( p->vDivs2UN0, pObj0 ); - Vec_PtrPush( p->vDivs2UN1, Abc_ObjNot(pObj1) ); - } - for ( w = 0; w < p->nWords; w++ ) -// if ( ~(puData0[w] | puData1[w]) & puDataR[w] ) - if ( ~(puData0[w] | puData1[w]) & puDataR[w] & p->pCareSet[w] ) // care set - break; - if ( w == p->nWords ) - { - Vec_PtrPush( p->vDivs2UN0, Abc_ObjNot(pObj0) ); - Vec_PtrPush( p->vDivs2UN1, Abc_ObjNot(pObj1) ); - } - } - } - } -// printf( "%d %d ", Vec_PtrSize(p->vDivs2UP0), Vec_PtrSize(p->vDivs2UN0) ); -} - - - -/**Function************************************************************* - - Synopsis [] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -Dec_Graph_t * Abc_ManResubQuit( Abc_ManRes_t * p ) -{ - Dec_Graph_t * pGraph; - unsigned * upData; - int w; - upData = p->pRoot->pData; - for ( w = 0; w < p->nWords; w++ ) -// if ( upData[w] ) - if ( upData[w] & p->pCareSet[w] ) // care set - break; - if ( w != p->nWords ) - return NULL; - // get constant node graph - if ( p->pRoot->fPhase ) - pGraph = Dec_GraphCreateConst1(); - else - pGraph = Dec_GraphCreateConst0(); - return pGraph; -} - -/**Function************************************************************* - - Synopsis [] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -Dec_Graph_t * Abc_ManResubDivs0( Abc_ManRes_t * p ) -{ - Abc_Obj_t * pObj; - unsigned * puData, * puDataR; - int i, w; - puDataR = p->pRoot->pData; - Vec_PtrForEachEntryStop( p->vDivs, pObj, i, p->nDivs ) - { - puData = pObj->pData; - for ( w = 0; w < p->nWords; w++ ) -// if ( puData[w] != puDataR[w] ) - if ( (puData[w] ^ puDataR[w]) & p->pCareSet[w] ) // care set - break; - if ( w == p->nWords ) - return Abc_ManResubQuit0( p->pRoot, pObj ); - } - return NULL; -} - -/**Function************************************************************* - - Synopsis [] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -Dec_Graph_t * Abc_ManResubDivs1( Abc_ManRes_t * p, int Required ) -{ - Abc_Obj_t * pObj0, * pObj1; - unsigned * puData0, * puData1, * puDataR; - int i, k, w; - puDataR = p->pRoot->pData; - // check positive unate divisors - Vec_PtrForEachEntry( p->vDivs1UP, pObj0, i ) - { - puData0 = pObj0->pData; - Vec_PtrForEachEntryStart( p->vDivs1UP, pObj1, k, i + 1 ) - { - puData1 = pObj1->pData; - for ( w = 0; w < p->nWords; w++ ) -// if ( (puData0[w] | puData1[w]) != puDataR[w] ) - if ( ((puData0[w] | puData1[w]) ^ puDataR[w]) & p->pCareSet[w] ) // care set - break; - if ( w == p->nWords ) - { - p->nUsedNode1Or++; - return Abc_ManResubQuit1( p->pRoot, pObj0, pObj1, 1 ); - } - } - } - // check negative unate divisors - Vec_PtrForEachEntry( p->vDivs1UN, pObj0, i ) - { - puData0 = pObj0->pData; - Vec_PtrForEachEntryStart( p->vDivs1UN, pObj1, k, i + 1 ) - { - puData1 = pObj1->pData; - for ( w = 0; w < p->nWords; w++ ) -// if ( (puData0[w] & puData1[w]) != puDataR[w] ) - if ( ((puData0[w] & puData1[w]) ^ puDataR[w]) & p->pCareSet[w] ) // care set - break; - if ( w == p->nWords ) - { - p->nUsedNode1And++; - return Abc_ManResubQuit1( p->pRoot, pObj0, pObj1, 0 ); - } - } - } - return NULL; -} - -/**Function************************************************************* - - Synopsis [] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -Dec_Graph_t * Abc_ManResubDivs12( Abc_ManRes_t * p, int Required ) -{ - Abc_Obj_t * pObj0, * pObj1, * pObj2, * pObjMax, * pObjMin0, * pObjMin1; - unsigned * puData0, * puData1, * puData2, * puDataR; - int i, k, j, w, LevelMax; - puDataR = p->pRoot->pData; - // check positive unate divisors - Vec_PtrForEachEntry( p->vDivs1UP, pObj0, i ) - { - puData0 = pObj0->pData; - Vec_PtrForEachEntryStart( p->vDivs1UP, pObj1, k, i + 1 ) - { - puData1 = pObj1->pData; - Vec_PtrForEachEntryStart( p->vDivs1UP, pObj2, j, k + 1 ) - { - puData2 = pObj2->pData; - for ( w = 0; w < p->nWords; w++ ) -// if ( (puData0[w] | puData1[w] | puData2[w]) != puDataR[w] ) - if ( ((puData0[w] | puData1[w] | puData2[w]) ^ puDataR[w]) & p->pCareSet[w] ) // care set - break; - if ( w == p->nWords ) - { - LevelMax = ABC_MAX( pObj0->Level, ABC_MAX(pObj1->Level, pObj2->Level) ); - assert( LevelMax <= Required - 1 ); - - pObjMax = NULL; - if ( (int)pObj0->Level == LevelMax ) - pObjMax = pObj0, pObjMin0 = pObj1, pObjMin1 = pObj2; - if ( (int)pObj1->Level == LevelMax ) - { - if ( pObjMax ) continue; - pObjMax = pObj1, pObjMin0 = pObj0, pObjMin1 = pObj2; - } - if ( (int)pObj2->Level == LevelMax ) - { - if ( pObjMax ) continue; - pObjMax = pObj2, pObjMin0 = pObj0, pObjMin1 = pObj1; - } - - p->nUsedNode2Or++; - return Abc_ManResubQuit21( p->pRoot, pObjMin0, pObjMin1, pObjMax, 1 ); - } - } - } - } - // check negative unate divisors - Vec_PtrForEachEntry( p->vDivs1UN, pObj0, i ) - { - puData0 = pObj0->pData; - Vec_PtrForEachEntryStart( p->vDivs1UN, pObj1, k, i + 1 ) - { - puData1 = pObj1->pData; - Vec_PtrForEachEntryStart( p->vDivs1UN, pObj2, j, k + 1 ) - { - puData2 = pObj2->pData; - for ( w = 0; w < p->nWords; w++ ) -// if ( (puData0[w] & puData1[w] & puData2[w]) != puDataR[w] ) - if ( ((puData0[w] & puData1[w] & puData2[w]) ^ puDataR[w]) & p->pCareSet[w] ) // care set - break; - if ( w == p->nWords ) - { - LevelMax = ABC_MAX( pObj0->Level, ABC_MAX(pObj1->Level, pObj2->Level) ); - assert( LevelMax <= Required - 1 ); - - pObjMax = NULL; - if ( (int)pObj0->Level == LevelMax ) - pObjMax = pObj0, pObjMin0 = pObj1, pObjMin1 = pObj2; - if ( (int)pObj1->Level == LevelMax ) - { - if ( pObjMax ) continue; - pObjMax = pObj1, pObjMin0 = pObj0, pObjMin1 = pObj2; - } - if ( (int)pObj2->Level == LevelMax ) - { - if ( pObjMax ) continue; - pObjMax = pObj2, pObjMin0 = pObj0, pObjMin1 = pObj1; - } - - p->nUsedNode2And++; - return Abc_ManResubQuit21( p->pRoot, pObjMin0, pObjMin1, pObjMax, 0 ); - } - } - } - } - return NULL; -} - -/**Function************************************************************* - - Synopsis [] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -Dec_Graph_t * Abc_ManResubDivs2( Abc_ManRes_t * p, int Required ) -{ - Abc_Obj_t * pObj0, * pObj1, * pObj2; - unsigned * puData0, * puData1, * puData2, * puDataR; - int i, k, w; - puDataR = p->pRoot->pData; - // check positive unate divisors - Vec_PtrForEachEntry( p->vDivs1UP, pObj0, i ) - { - puData0 = pObj0->pData; - Vec_PtrForEachEntry( p->vDivs2UP0, pObj1, k ) - { - pObj2 = Vec_PtrEntry( p->vDivs2UP1, k ); - - puData1 = Abc_ObjRegular(pObj1)->pData; - puData2 = Abc_ObjRegular(pObj2)->pData; - if ( Abc_ObjIsComplement(pObj1) && Abc_ObjIsComplement(pObj2) ) - { - for ( w = 0; w < p->nWords; w++ ) -// if ( (puData0[w] | (puData1[w] | puData2[w])) != puDataR[w] ) - if ( ((puData0[w] | (puData1[w] | puData2[w])) ^ puDataR[w]) & p->pCareSet[w] ) // care set - break; - } - else if ( Abc_ObjIsComplement(pObj1) ) - { - for ( w = 0; w < p->nWords; w++ ) -// if ( (puData0[w] | (~puData1[w] & puData2[w])) != puDataR[w] ) - if ( ((puData0[w] | (~puData1[w] & puData2[w])) ^ puDataR[w]) & p->pCareSet[w] ) // care set - break; - } - else if ( Abc_ObjIsComplement(pObj2) ) - { - for ( w = 0; w < p->nWords; w++ ) -// if ( (puData0[w] | (puData1[w] & ~puData2[w])) != puDataR[w] ) - if ( ((puData0[w] | (puData1[w] & ~puData2[w])) ^ puDataR[w]) & p->pCareSet[w] ) // care set - break; - } - else - { - for ( w = 0; w < p->nWords; w++ ) -// if ( (puData0[w] | (puData1[w] & puData2[w])) != puDataR[w] ) - if ( ((puData0[w] | (puData1[w] & puData2[w])) ^ puDataR[w]) & p->pCareSet[w] ) // care set - break; - } - if ( w == p->nWords ) - { - p->nUsedNode2OrAnd++; - return Abc_ManResubQuit2( p->pRoot, pObj0, pObj1, pObj2, 1 ); - } - } - } - // check negative unate divisors - Vec_PtrForEachEntry( p->vDivs1UN, pObj0, i ) - { - puData0 = pObj0->pData; - Vec_PtrForEachEntry( p->vDivs2UN0, pObj1, k ) - { - pObj2 = Vec_PtrEntry( p->vDivs2UN1, k ); - - puData1 = Abc_ObjRegular(pObj1)->pData; - puData2 = Abc_ObjRegular(pObj2)->pData; - if ( Abc_ObjIsComplement(pObj1) && Abc_ObjIsComplement(pObj2) ) - { - for ( w = 0; w < p->nWords; w++ ) -// if ( (puData0[w] & (puData1[w] | puData2[w])) != puDataR[w] ) - if ( ((puData0[w] & (puData1[w] | puData2[w])) ^ puDataR[w]) & p->pCareSet[w] ) // care set - break; - } - else if ( Abc_ObjIsComplement(pObj1) ) - { - for ( w = 0; w < p->nWords; w++ ) -// if ( (puData0[w] & (~puData1[w] & puData2[w])) != puDataR[w] ) - if ( ((puData0[w] & (~puData1[w] & puData2[w])) ^ puDataR[w]) & p->pCareSet[w] ) // care set - break; - } - else if ( Abc_ObjIsComplement(pObj2) ) - { - for ( w = 0; w < p->nWords; w++ ) -// if ( (puData0[w] & (puData1[w] & ~puData2[w])) != puDataR[w] ) - if ( ((puData0[w] & (puData1[w] & ~puData2[w])) ^ puDataR[w]) & p->pCareSet[w] ) // care set - break; - } - else - { - for ( w = 0; w < p->nWords; w++ ) -// if ( (puData0[w] & (puData1[w] & puData2[w])) != puDataR[w] ) - if ( ((puData0[w] & (puData1[w] & puData2[w])) ^ puDataR[w]) & p->pCareSet[w] ) // care set - break; - } - if ( w == p->nWords ) - { - p->nUsedNode2AndOr++; - return Abc_ManResubQuit2( p->pRoot, pObj0, pObj1, pObj2, 0 ); - } - } - } - return NULL; -} - -/**Function************************************************************* - - Synopsis [] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -Dec_Graph_t * Abc_ManResubDivs3( Abc_ManRes_t * p, int Required ) -{ - Abc_Obj_t * pObj0, * pObj1, * pObj2, * pObj3; - unsigned * puData0, * puData1, * puData2, * puData3, * puDataR; - int i, k, w, Flag; - puDataR = p->pRoot->pData; - // check positive unate divisors - Vec_PtrForEachEntry( p->vDivs2UP0, pObj0, i ) - { - pObj1 = Vec_PtrEntry( p->vDivs2UP1, i ); - puData0 = Abc_ObjRegular(pObj0)->pData; - puData1 = Abc_ObjRegular(pObj1)->pData; - Flag = (Abc_ObjIsComplement(pObj0) << 3) | (Abc_ObjIsComplement(pObj1) << 2); - - Vec_PtrForEachEntryStart( p->vDivs2UP0, pObj2, k, i + 1 ) - { - pObj3 = Vec_PtrEntry( p->vDivs2UP1, k ); - puData2 = Abc_ObjRegular(pObj2)->pData; - puData3 = Abc_ObjRegular(pObj3)->pData; - - Flag = (Flag & 12) | (Abc_ObjIsComplement(pObj2) << 1) | Abc_ObjIsComplement(pObj3); - assert( Flag < 16 ); - switch( Flag ) - { - case 0: // 0000 - for ( w = 0; w < p->nWords; w++ ) -// if ( ((puData0[w] & puData1[w]) | (puData2[w] & puData3[w])) != puDataR[w] ) - if ( (((puData0[w] & puData1[w]) | (puData2[w] & puData3[w])) ^ puDataR[w]) & p->pCareSet[w] ) // care set - break; - break; - case 1: // 0001 - for ( w = 0; w < p->nWords; w++ ) -// if ( ((puData0[w] & puData1[w]) | (puData2[w] & ~puData3[w])) != puDataR[w] ) - if ( (((puData0[w] & puData1[w]) | (puData2[w] & ~puData3[w])) ^ puDataR[w]) & p->pCareSet[w] ) // care set - break; - break; - case 2: // 0010 - for ( w = 0; w < p->nWords; w++ ) -// if ( ((puData0[w] & puData1[w]) | (~puData2[w] & puData3[w])) != puDataR[w] ) - if ( (((puData0[w] & puData1[w]) | (~puData2[w] & puData3[w])) ^ puDataR[w]) & p->pCareSet[w] ) // care set - break; - break; - case 3: // 0011 - for ( w = 0; w < p->nWords; w++ ) -// if ( ((puData0[w] & puData1[w]) | (puData2[w] | puData3[w])) != puDataR[w] ) - if ( (((puData0[w] & puData1[w]) | (puData2[w] | puData3[w])) ^ puDataR[w]) & p->pCareSet[w] ) // care set - break; - break; - - case 4: // 0100 - for ( w = 0; w < p->nWords; w++ ) -// if ( ((puData0[w] & ~puData1[w]) | (puData2[w] & puData3[w])) != puDataR[w] ) - if ( (((puData0[w] & ~puData1[w]) | (puData2[w] & puData3[w])) ^ puDataR[w]) & p->pCareSet[w] ) // care set - break; - break; - case 5: // 0101 - for ( w = 0; w < p->nWords; w++ ) -// if ( ((puData0[w] & ~puData1[w]) | (puData2[w] & ~puData3[w])) != puDataR[w] ) - if ( (((puData0[w] & ~puData1[w]) | (puData2[w] & ~puData3[w])) ^ puDataR[w]) & p->pCareSet[w] ) // care set - break; - break; - case 6: // 0110 - for ( w = 0; w < p->nWords; w++ ) -// if ( ((puData0[w] & ~puData1[w]) | (~puData2[w] & puData3[w])) != puDataR[w] ) - if ( (((puData0[w] & ~puData1[w]) | (~puData2[w] & puData3[w])) ^ puDataR[w]) & p->pCareSet[w] ) // care set - break; - break; - case 7: // 0111 - for ( w = 0; w < p->nWords; w++ ) -// if ( ((puData0[w] & ~puData1[w]) | (puData2[w] | puData3[w])) != puDataR[w] ) - if ( (((puData0[w] & ~puData1[w]) | (puData2[w] | puData3[w])) ^ puDataR[w]) & p->pCareSet[w] ) // care set - break; - break; - - case 8: // 1000 - for ( w = 0; w < p->nWords; w++ ) -// if ( ((~puData0[w] & puData1[w]) | (puData2[w] & puData3[w])) != puDataR[w] ) - if ( (((~puData0[w] & puData1[w]) | (puData2[w] & puData3[w])) ^ puDataR[w]) & p->pCareSet[w] ) // care set - break; - break; - case 9: // 1001 - for ( w = 0; w < p->nWords; w++ ) -// if ( ((~puData0[w] & puData1[w]) | (puData2[w] & ~puData3[w])) != puDataR[w] ) - if ( (((~puData0[w] & puData1[w]) | (puData2[w] & ~puData3[w])) ^ puDataR[w]) & p->pCareSet[w] ) // care set - break; - break; - case 10: // 1010 - for ( w = 0; w < p->nWords; w++ ) -// if ( ((~puData0[w] & puData1[w]) | (~puData2[w] & puData3[w])) != puDataR[w] ) - if ( (((~puData0[w] & puData1[w]) | (~puData2[w] & puData3[w])) ^ puDataR[w]) & p->pCareSet[w] ) // care set - break; - break; - case 11: // 1011 - for ( w = 0; w < p->nWords; w++ ) -// if ( ((~puData0[w] & puData1[w]) | (puData2[w] | puData3[w])) != puDataR[w] ) - if ( (((~puData0[w] & puData1[w]) | (puData2[w] | puData3[w])) ^ puDataR[w]) & p->pCareSet[w] ) // care set - break; - break; - - case 12: // 1100 - for ( w = 0; w < p->nWords; w++ ) -// if ( ((puData0[w] | puData1[w]) | (puData2[w] & puData3[w])) != puDataR[w] ) - if ( (((puData0[w] | puData1[w]) | (puData2[w] & puData3[w])) ^ puDataR[w]) & p->pCareSet[w] ) // care set - break; - break; - case 13: // 1101 - for ( w = 0; w < p->nWords; w++ ) -// if ( ((puData0[w] | puData1[w]) | (puData2[w] & ~puData3[w])) != puDataR[w] ) - if ( (((puData0[w] | puData1[w]) | (puData2[w] & ~puData3[w])) ^ puDataR[w]) & p->pCareSet[w] ) - break; - break; - case 14: // 1110 - for ( w = 0; w < p->nWords; w++ ) -// if ( ((puData0[w] | puData1[w]) | (~puData2[w] & puData3[w])) != puDataR[w] ) - if ( (((puData0[w] | puData1[w]) | (~puData2[w] & puData3[w])) ^ puDataR[w]) & p->pCareSet[w] ) - break; - break; - case 15: // 1111 - for ( w = 0; w < p->nWords; w++ ) -// if ( ((puData0[w] | puData1[w]) | (puData2[w] | puData3[w])) != puDataR[w] ) - if ( (((puData0[w] | puData1[w]) | (puData2[w] | puData3[w])) ^ puDataR[w]) & p->pCareSet[w] ) - break; - break; - - } - if ( w == p->nWords ) - { - p->nUsedNode3OrAnd++; - return Abc_ManResubQuit3( p->pRoot, pObj0, pObj1, pObj2, pObj3, 1 ); - } - } - } -/* - // check negative unate divisors - Vec_PtrForEachEntry( p->vDivs2UN0, pObj0, i ) - { - pObj1 = Vec_PtrEntry( p->vDivs2UN1, i ); - puData0 = Abc_ObjRegular(pObj0)->pData; - puData1 = Abc_ObjRegular(pObj1)->pData; - Flag = (Abc_ObjIsComplement(pObj0) << 3) | (Abc_ObjIsComplement(pObj1) << 2); - - Vec_PtrForEachEntryStart( p->vDivs2UN0, pObj2, k, i + 1 ) - { - pObj3 = Vec_PtrEntry( p->vDivs2UN1, k ); - puData2 = Abc_ObjRegular(pObj2)->pData; - puData3 = Abc_ObjRegular(pObj3)->pData; - - Flag = (Flag & 12) | (Abc_ObjIsComplement(pObj2) << 1) | Abc_ObjIsComplement(pObj3); - assert( Flag < 16 ); - switch( Flag ) - { - case 0: // 0000 - for ( w = 0; w < p->nWords; w++ ) - if ( ((puData0[w] & puData1[w]) & (puData2[w] & puData3[w])) != puDataR[w] ) - break; - break; - case 1: // 0001 - for ( w = 0; w < p->nWords; w++ ) - if ( ((puData0[w] & puData1[w]) & (puData2[w] & ~puData3[w])) != puDataR[w] ) - break; - break; - case 2: // 0010 - for ( w = 0; w < p->nWords; w++ ) - if ( ((puData0[w] & puData1[w]) & (~puData2[w] & puData3[w])) != puDataR[w] ) - break; - break; - case 3: // 0011 - for ( w = 0; w < p->nWords; w++ ) - if ( ((puData0[w] & puData1[w]) & (puData2[w] | puData3[w])) != puDataR[w] ) - break; - break; - - case 4: // 0100 - for ( w = 0; w < p->nWords; w++ ) - if ( ((puData0[w] & ~puData1[w]) & (puData2[w] & puData3[w])) != puDataR[w] ) - break; - break; - case 5: // 0101 - for ( w = 0; w < p->nWords; w++ ) - if ( ((puData0[w] & ~puData1[w]) & (puData2[w] & ~puData3[w])) != puDataR[w] ) - break; - break; - case 6: // 0110 - for ( w = 0; w < p->nWords; w++ ) - if ( ((puData0[w] & ~puData1[w]) & (~puData2[w] & puData3[w])) != puDataR[w] ) - break; - break; - case 7: // 0111 - for ( w = 0; w < p->nWords; w++ ) - if ( ((puData0[w] & ~puData1[w]) & (puData2[w] | puData3[w])) != puDataR[w] ) - break; - break; - - case 8: // 1000 - for ( w = 0; w < p->nWords; w++ ) - if ( ((~puData0[w] & puData1[w]) & (puData2[w] & puData3[w])) != puDataR[w] ) - break; - break; - case 9: // 1001 - for ( w = 0; w < p->nWords; w++ ) - if ( ((~puData0[w] & puData1[w]) & (puData2[w] & ~puData3[w])) != puDataR[w] ) - break; - break; - case 10: // 1010 - for ( w = 0; w < p->nWords; w++ ) - if ( ((~puData0[w] & puData1[w]) & (~puData2[w] & puData3[w])) != puDataR[w] ) - break; - break; - case 11: // 1011 - for ( w = 0; w < p->nWords; w++ ) - if ( ((~puData0[w] & puData1[w]) & (puData2[w] | puData3[w])) != puDataR[w] ) - break; - break; - - case 12: // 1100 - for ( w = 0; w < p->nWords; w++ ) - if ( ((puData0[w] | puData1[w]) & (puData2[w] & puData3[w])) != puDataR[w] ) - break; - break; - case 13: // 1101 - for ( w = 0; w < p->nWords; w++ ) - if ( ((puData0[w] | puData1[w]) & (puData2[w] & ~puData3[w])) != puDataR[w] ) - break; - break; - case 14: // 1110 - for ( w = 0; w < p->nWords; w++ ) - if ( ((puData0[w] | puData1[w]) & (~puData2[w] & puData3[w])) != puDataR[w] ) - break; - break; - case 15: // 1111 - for ( w = 0; w < p->nWords; w++ ) - if ( ((puData0[w] | puData1[w]) & (puData2[w] | puData3[w])) != puDataR[w] ) - break; - break; - - } - if ( w == p->nWords ) - { - p->nUsedNode3AndOr++; - return Abc_ManResubQuit3( p->pRoot, pObj0, pObj1, pObj2, pObj3, 0 ); - } - } - } -*/ - return NULL; -} - -/**Function************************************************************* - - Synopsis [] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -void Abc_ManResubCleanup( Abc_ManRes_t * p ) -{ - Abc_Obj_t * pObj; - int i; - Vec_PtrForEachEntry( p->vDivs, pObj, i ) - pObj->pData = NULL; - Vec_PtrClear( p->vDivs ); - p->pRoot = NULL; -} - -/**Function************************************************************* - - Synopsis [Evaluates resubstution of one cut.] - - Description [Returns the graph to add if any.] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -Dec_Graph_t * Abc_ManResubEval( Abc_ManRes_t * p, Abc_Obj_t * pRoot, Vec_Ptr_t * vLeaves, int nSteps, bool fUpdateLevel, bool fVerbose ) -{ - extern int Abc_NodeMffsInside( Abc_Obj_t * pNode, Vec_Ptr_t * vLeaves, Vec_Ptr_t * vInside ); - Dec_Graph_t * pGraph; - int Required; - int clk; - - Required = fUpdateLevel? Abc_ObjRequiredLevel(pRoot) : ABC_INFINITY; - - assert( nSteps >= 0 ); - assert( nSteps <= 3 ); - p->pRoot = pRoot; - p->nLeaves = Vec_PtrSize(vLeaves); - p->nLastGain = -1; - - // collect the MFFC -clk = clock(); - p->nMffc = Abc_NodeMffsInside( pRoot, vLeaves, p->vTemp ); -p->timeMffc += clock() - clk; - assert( p->nMffc > 0 ); - - // collect the divisor nodes -clk = clock(); - if ( !Abc_ManResubCollectDivs( p, pRoot, vLeaves, Required ) ) - return NULL; - p->timeDiv += clock() - clk; - - p->nTotalDivs += p->nDivs; - p->nTotalLeaves += p->nLeaves; - - // simulate the nodes -clk = clock(); - Abc_ManResubSimulate( p->vDivs, p->nLeaves, p->vSims, p->nLeavesMax, p->nWords ); -p->timeSim += clock() - clk; - -clk = clock(); - // consider constants - if ( pGraph = Abc_ManResubQuit( p ) ) - { - p->nUsedNodeC++; - p->nLastGain = p->nMffc; - return pGraph; - } - - // consider equal nodes - if ( pGraph = Abc_ManResubDivs0( p ) ) - { -p->timeRes1 += clock() - clk; - p->nUsedNode0++; - p->nLastGain = p->nMffc; - return pGraph; - } - if ( nSteps == 0 || p->nMffc == 1 ) - { -p->timeRes1 += clock() - clk; - return NULL; - } - - // get the one level divisors - Abc_ManResubDivsS( p, Required ); - - // consider one node - if ( pGraph = Abc_ManResubDivs1( p, Required ) ) - { -p->timeRes1 += clock() - clk; - p->nLastGain = p->nMffc - 1; - return pGraph; - } -p->timeRes1 += clock() - clk; - if ( nSteps == 1 || p->nMffc == 2 ) - return NULL; - -clk = clock(); - // consider triples - if ( pGraph = Abc_ManResubDivs12( p, Required ) ) - { -p->timeRes2 += clock() - clk; - p->nLastGain = p->nMffc - 2; - return pGraph; - } -p->timeRes2 += clock() - clk; - - // get the two level divisors -clk = clock(); - Abc_ManResubDivsD( p, Required ); -p->timeResD += clock() - clk; - - // consider two nodes -clk = clock(); - if ( pGraph = Abc_ManResubDivs2( p, Required ) ) - { -p->timeRes2 += clock() - clk; - p->nLastGain = p->nMffc - 2; - return pGraph; - } -p->timeRes2 += clock() - clk; - if ( nSteps == 2 || p->nMffc == 3 ) - return NULL; - - // consider two nodes -clk = clock(); - if ( pGraph = Abc_ManResubDivs3( p, Required ) ) - { -p->timeRes3 += clock() - clk; - p->nLastGain = p->nMffc - 3; - return pGraph; - } -p->timeRes3 += clock() - clk; - if ( nSteps == 3 || p->nLeavesMax == 4 ) - return NULL; - return NULL; -} - - - - -/**Function************************************************************* - - Synopsis [Computes the volume and checks if the cut is feasible.] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -int Abc_CutVolumeCheck_rec( Abc_Obj_t * pObj ) -{ - // quit if the node is visited (or if it is a leaf) - if ( Abc_NodeIsTravIdCurrent(pObj) ) - return 0; - Abc_NodeSetTravIdCurrent(pObj); - // report the error - if ( Abc_ObjIsCi(pObj) ) - printf( "Abc_CutVolumeCheck() ERROR: The set of nodes is not a cut!\n" ); - // count the number of nodes in the leaves - return 1 + Abc_CutVolumeCheck_rec( Abc_ObjFanin0(pObj) ) + - Abc_CutVolumeCheck_rec( Abc_ObjFanin1(pObj) ); -} - -/**Function************************************************************* - - Synopsis [Computes the volume and checks if the cut is feasible.] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -int Abc_CutVolumeCheck( Abc_Obj_t * pNode, Vec_Ptr_t * vLeaves ) -{ - Abc_Obj_t * pObj; - int i; - // mark the leaves - Abc_NtkIncrementTravId( pNode->pNtk ); - Vec_PtrForEachEntry( vLeaves, pObj, i ) - Abc_NodeSetTravIdCurrent( pObj ); - // traverse the nodes starting from the given one and count them - return Abc_CutVolumeCheck_rec( pNode ); -} - -/**Function************************************************************* - - Synopsis [Computes the factor cut of the node.] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -void Abc_CutFactor_rec( Abc_Obj_t * pObj, Vec_Ptr_t * vLeaves ) -{ - if ( pObj->fMarkA ) - return; - if ( Abc_ObjIsCi(pObj) || (Abc_ObjFanoutNum(pObj) > 1 && !Abc_NodeIsMuxControlType(pObj)) ) - { - Vec_PtrPush( vLeaves, pObj ); - pObj->fMarkA = 1; - return; - } - Abc_CutFactor_rec( Abc_ObjFanin0(pObj), vLeaves ); - Abc_CutFactor_rec( Abc_ObjFanin1(pObj), vLeaves ); -} - -/**Function************************************************************* - - Synopsis [Computes the factor cut of the node.] - - Description [Factor-cut is the cut at a node in terms of factor-nodes. - Factor-nodes are roots of the node trees (MUXes/EXORs are counted as single nodes). - Factor-cut is unique for the given node.] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -Vec_Ptr_t * Abc_CutFactor( Abc_Obj_t * pNode ) -{ - Vec_Ptr_t * vLeaves; - Abc_Obj_t * pObj; - int i; - assert( !Abc_ObjIsCi(pNode) ); - vLeaves = Vec_PtrAlloc( 10 ); - Abc_CutFactor_rec( Abc_ObjFanin0(pNode), vLeaves ); - Abc_CutFactor_rec( Abc_ObjFanin1(pNode), vLeaves ); - Vec_PtrForEachEntry( vLeaves, pObj, i ) - pObj->fMarkA = 0; - return vLeaves; -} - -/**Function************************************************************* - - Synopsis [Cut computation.] - - Description [This cut computation works as follows: - It starts with the factor cut at the node. If the factor-cut is large, quit. - It supports the set of leaves of the cut under construction and labels all nodes - in the cut under construction, including the leaves. - It computes the factor-cuts of the leaves and checks if it is easible to add any of them. - If it is, it randomly chooses one feasible and continues.] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -Vec_Ptr_t * Abc_CutFactorLarge( Abc_Obj_t * pNode, int nLeavesMax ) -{ - Vec_Ptr_t * vLeaves, * vFactors, * vFact, * vNext; - Vec_Int_t * vFeasible; - Abc_Obj_t * pLeaf, * pTemp; - int i, k, Counter, RandLeaf; - int BestCut, BestShare; - assert( Abc_ObjIsNode(pNode) ); - // get one factor-cut - vLeaves = Abc_CutFactor( pNode ); - if ( Vec_PtrSize(vLeaves) > nLeavesMax ) - { - Vec_PtrFree(vLeaves); - return NULL; - } - if ( Vec_PtrSize(vLeaves) == nLeavesMax ) - return vLeaves; - // initialize the factor cuts for the leaves - vFactors = Vec_PtrAlloc( nLeavesMax ); - Abc_NtkIncrementTravId( pNode->pNtk ); - Vec_PtrForEachEntry( vLeaves, pLeaf, i ) - { - Abc_NodeSetTravIdCurrent( pLeaf ); - if ( Abc_ObjIsCi(pLeaf) ) - Vec_PtrPush( vFactors, NULL ); - else - Vec_PtrPush( vFactors, Abc_CutFactor(pLeaf) ); - } - // construct larger factor cuts - vFeasible = Vec_IntAlloc( nLeavesMax ); - while ( 1 ) - { - BestCut = -1; - // find the next feasible cut to add - Vec_IntClear( vFeasible ); - Vec_PtrForEachEntry( vFactors, vFact, i ) - { - if ( vFact == NULL ) - continue; - // count the number of unmarked leaves of this factor cut - Counter = 0; - Vec_PtrForEachEntry( vFact, pTemp, k ) - Counter += !Abc_NodeIsTravIdCurrent(pTemp); - // if the number of new leaves is smaller than the diff, it is feasible - if ( Counter <= nLeavesMax - Vec_PtrSize(vLeaves) + 1 ) - { - Vec_IntPush( vFeasible, i ); - if ( BestCut == -1 || BestShare < Vec_PtrSize(vFact) - Counter ) - BestCut = i, BestShare = Vec_PtrSize(vFact) - Counter; - } - } - // quit if there is no feasible factor cuts - if ( Vec_IntSize(vFeasible) == 0 ) - break; - // randomly choose one leaf and get its factor cut -// RandLeaf = Vec_IntEntry( vFeasible, rand() % Vec_IntSize(vFeasible) ); - // choose the cut that has most sharing with the other cuts - RandLeaf = BestCut; - - pLeaf = Vec_PtrEntry( vLeaves, RandLeaf ); - vNext = Vec_PtrEntry( vFactors, RandLeaf ); - // unmark this leaf - Abc_NodeSetTravIdPrevious( pLeaf ); - // remove this cut from the leaves and factor cuts - for ( i = RandLeaf; i < Vec_PtrSize(vLeaves)-1; i++ ) - { - Vec_PtrWriteEntry( vLeaves, i, Vec_PtrEntry(vLeaves, i+1) ); - Vec_PtrWriteEntry( vFactors, i, Vec_PtrEntry(vFactors,i+1) ); - } - Vec_PtrShrink( vLeaves, Vec_PtrSize(vLeaves) -1 ); - Vec_PtrShrink( vFactors, Vec_PtrSize(vFactors)-1 ); - // add new leaves, compute their factor cuts - Vec_PtrForEachEntry( vNext, pLeaf, i ) - { - if ( Abc_NodeIsTravIdCurrent(pLeaf) ) - continue; - Abc_NodeSetTravIdCurrent( pLeaf ); - Vec_PtrPush( vLeaves, pLeaf ); - if ( Abc_ObjIsCi(pLeaf) ) - Vec_PtrPush( vFactors, NULL ); - else - Vec_PtrPush( vFactors, Abc_CutFactor(pLeaf) ); - } - Vec_PtrFree( vNext ); - assert( Vec_PtrSize(vLeaves) <= nLeavesMax ); - if ( Vec_PtrSize(vLeaves) == nLeavesMax ) - break; - } - - // remove temporary storage - Vec_PtrForEachEntry( vFactors, vFact, i ) - if ( vFact ) Vec_PtrFree( vFact ); - Vec_PtrFree( vFactors ); - Vec_IntFree( vFeasible ); - return vLeaves; -} - -//////////////////////////////////////////////////////////////////////// -/// END OF FILE /// -//////////////////////////////////////////////////////////////////////// - - |