diff options
Diffstat (limited to 'src/opt/rwr')
-rw-r--r-- | src/opt/rwr/rwr.h | 36 | ||||
-rw-r--r-- | src/opt/rwr/rwrCut.c | 4 | ||||
-rw-r--r-- | src/opt/rwr/rwrEva.c | 216 | ||||
-rw-r--r-- | src/opt/rwr/rwrExp.c | 2 | ||||
-rw-r--r-- | src/opt/rwr/rwrLib.c | 452 | ||||
-rw-r--r-- | src/opt/rwr/rwrMan.c | 178 | ||||
-rw-r--r-- | src/opt/rwr/rwrPrint.c | 239 | ||||
-rw-r--r-- | src/opt/rwr/rwrUtil.c | 616 |
8 files changed, 1124 insertions, 619 deletions
diff --git a/src/opt/rwr/rwr.h b/src/opt/rwr/rwr.h index 96810c25..5d190745 100644 --- a/src/opt/rwr/rwr.h +++ b/src/opt/rwr/rwr.h @@ -44,17 +44,19 @@ typedef struct Rwr_Cut_t_ Rwr_Cut_t; struct Rwr_Man_t_ { // internal lookups - int nFuncs; // the number of four var functions + int nFuncs; // number of four var functions unsigned short * puCanons; // canonical forms char * pPhases; // canonical phases char * pPerms; // canonical permutations unsigned char * pMap; // mapping of functions into class numbers - char * pPractical; // practical classes - unsigned short puPerms[256][16]; // permutations for three var functions + char * pPractical; // practical NPN classes + unsigned short ** puPerms43; // four-var permutations for three var functions // node space Vec_Ptr_t * vForest; // all the nodes Rwr_Node_t ** pTable; // the hash table of nodes by their canonical form + Vec_Vec_t * vClasses; // the nodes of the equivalence classes Extra_MmFixed_t * pMmNode; // memory for nodes and cuts + // statistical variables int nTravIds; // the counter of traversal IDs int nConsidered; // the number of nodes considered int nAdded; // the number of nodes added to lists @@ -64,10 +66,8 @@ struct Rwr_Man_t_ Vec_Int_t * vReqTimes; // the required times for each node (used for delay-driven evalution) // the result of resynthesis Vec_Int_t * vForm; // the decomposition tree (temporary) + Vec_Int_t * vLevNums; // the array of levels (temporary) Vec_Ptr_t * vFanins; // the fanins array (temporary) - Vec_Ptr_t * vTfo; // the TFO node array (temporary) - Vec_Ptr_t * vTfoFor; // the TFO node array (temporary) - Vec_Vec_t * vLevels; // the levelized structure (temporary) int nGainMax; // runtime statistics int time1; @@ -82,8 +82,7 @@ struct Rwr_Node_t_ // 24 bytes int TravId; // traversal ID unsigned uTruth : 16; // truth table unsigned Volume : 8; // volume - unsigned Level : 5; // level - unsigned fMark : 1; // mark + unsigned Level : 6; // level unsigned fUsed : 1; // mark unsigned fExor : 1; // mark Rwr_Node_t * p0; // first child @@ -122,22 +121,29 @@ extern void Rwr_NtkStartCuts( Rwr_Man_t * p, Abc_Ntk_t * pNtk ); extern void Rwr_NodeComputeCuts( Rwr_Man_t * p, Abc_Obj_t * pNode ); /*=== rwrEva.c ========================================================*/ extern int Rwr_NodeRewrite( Rwr_Man_t * p, Abc_Obj_t * pNode ); +extern void Rwr_ManPreprocess( Rwr_Man_t * p ); /*=== rwrLib.c ========================================================*/ extern void Rwr_ManPrecompute( Rwr_Man_t * p ); -extern void Rwr_ManWriteToFile( Rwr_Man_t * p, char * pFileName ); -extern void Rwr_ManLoadFromFile( Rwr_Man_t * p, char * pFileName ); -extern void Rwr_ManPrintFirst( Rwr_Man_t * p ); -extern void Rwr_ManPrintNext( Rwr_Man_t * p ); -extern Rwr_Node_t * Rwr_ManAddVar( Rwr_Man_t * p, unsigned uTruth, char * pFileName ); +extern Rwr_Node_t * Rwr_ManAddVar( Rwr_Man_t * p, unsigned uTruth, int fPrecompute ); +extern Rwr_Node_t * Rwr_ManAddNode( Rwr_Man_t * p, Rwr_Node_t * p0, Rwr_Node_t * p1, int fExor, int Level, int Volume ); +extern int Rwr_ManNodeVolume( Rwr_Man_t * p, Rwr_Node_t * p0, Rwr_Node_t * p1 ); +extern void Rwr_ManIncTravId( Rwr_Man_t * p ); /*=== rwrMan.c ========================================================*/ -extern Rwr_Man_t * Rwr_ManStart( char * pFileName ); +extern Rwr_Man_t * Rwr_ManStart( bool fPrecompute ); extern void Rwr_ManStop( Rwr_Man_t * p ); extern void Rwr_ManPrepareNetwork( Rwr_Man_t * p, Abc_Ntk_t * pNtk ); extern Vec_Ptr_t * Rwr_ManReadFanins( Rwr_Man_t * p ); extern Vec_Int_t * Rwr_ManReadDecs( Rwr_Man_t * p ); -extern unsigned short Rwr_FunctionPhase( unsigned uTruth, unsigned uPhase ); +/*=== rwrPrint.c ========================================================*/ +extern void Rwr_ManPrint( Rwr_Man_t * p ); /*=== rwrUtil.c ========================================================*/ +extern void Rwr_ManWriteToArray( Rwr_Man_t * p ); +extern void Rwr_ManLoadFromArray( Rwr_Man_t * p ); +extern void Rwr_ManWriteToFile( Rwr_Man_t * p, char * pFileName ); +extern void Rwr_ManLoadFromFile( Rwr_Man_t * p, char * pFileName ); extern Vec_Int_t * Rwt_NtkFanoutCounters( Abc_Ntk_t * pNtk ); +extern void Rwr_ListAddToTail( Rwr_Node_t ** ppList, Rwr_Node_t * pNode ); +extern char * Rwr_ManGetPractical( Rwr_Man_t * p ); //////////////////////////////////////////////////////////////////////// /// END OF FILE /// diff --git a/src/opt/rwr/rwrCut.c b/src/opt/rwr/rwrCut.c index c8560114..209d6ee6 100644 --- a/src/opt/rwr/rwrCut.c +++ b/src/opt/rwr/rwrCut.c @@ -174,7 +174,7 @@ Rwr_Cut_t * Rwr_CutsMerge( Rwr_Man_t * p, Rwr_Cut_t * pCut0, Rwr_Cut_t * pCut1, } assert( uPhase < 16 ); assert( pCut0->uTruth < 256 ); - uTruth0 = p->puPerms[pCut0->uTruth][uPhase]; + uTruth0 = p->puPerms43[pCut0->uTruth][uPhase]; } // find the mapping from the old nodes to the new @@ -192,7 +192,7 @@ Rwr_Cut_t * Rwr_CutsMerge( Rwr_Man_t * p, Rwr_Cut_t * pCut0, Rwr_Cut_t * pCut1, } assert( uPhase < 16 ); assert( pCut1->uTruth < 256 ); - uTruth1 = p->puPerms[pCut1->uTruth][uPhase]; + uTruth1 = p->puPerms43[pCut1->uTruth][uPhase]; } // create the cut diff --git a/src/opt/rwr/rwrEva.c b/src/opt/rwr/rwrEva.c index 50e773f8..ddc9d742 100644 --- a/src/opt/rwr/rwrEva.c +++ b/src/opt/rwr/rwrEva.c @@ -19,13 +19,13 @@ ***********************************************************************/ #include "rwr.h" +#include "ft.h" //////////////////////////////////////////////////////////////////////// /// DECLARATIONS /// //////////////////////////////////////////////////////////////////////// -static void Rwr_CutEvaluate( Rwr_Man_t * p, Abc_Obj_t * pNode, Rwr_Cut_t * pCut ); -static void Rwr_CutDecompose( Rwr_Man_t * p, Abc_Obj_t * pNode, Rwr_Cut_t * pCut, Vec_Int_t * vForm ); +static Vec_Int_t * Rwr_CutEvaluate( Rwr_Man_t * p, Abc_Obj_t * pRoot, Rwr_Cut_t * pCut, int NodeMax, int LevelMax ); //////////////////////////////////////////////////////////////////////// /// FUNCTION DEFITIONS /// @@ -51,43 +51,34 @@ static void Rwr_CutDecompose( Rwr_Man_t * p, Abc_Obj_t * pNode, Rwr_Cut_t * pCut ***********************************************************************/ int Rwr_NodeRewrite( Rwr_Man_t * p, Abc_Obj_t * pNode ) { - Vec_Ptr_t Vector = {0,0,0}, * vFanins = &Vector; - Rwr_Cut_t * pCut, * pCutBest; - int BestGain = -1; - int i, Required = Vec_IntEntry( p->vReqTimes, pNode->Id ); - - // compute the cuts of the node + Vec_Int_t * vForm; + Rwr_Cut_t * pCut; + int Required, nNodesSaved; + int i, BestGain = -1; + // compute the cuts for this node Rwr_NodeComputeCuts( p, pNode ); - + // get the required times + Required = Vec_IntEntry( p->vReqTimes, pNode->Id ); + // label MFFC with current ID + nNodesSaved = Abc_NodeMffcLabel( pNode ); // go through the cuts for ( pCut = (Rwr_Cut_t *)pNode->pCopy, pCut = pCut->pNext; pCut; pCut = pCut->pNext ) { - // collect the TFO - vFanins->nSize = pCut->nLeaves; - vFanins->pArray = pCut->ppLeaves; - Abc_NodeCollectTfoCands( pNode->pNtk, pNode, vFanins, Required, p->vLevels, p->vTfo ); // evaluate the cut - Rwr_CutEvaluate( p, pNode, pCut ); - // check if the cut is the best - if ( pCut->fTime && pCut->fGain ) + vForm = Rwr_CutEvaluate( p, pNode, pCut, nNodesSaved, Required ); + // check if the cut is better than the currently best one + if ( vForm != NULL && BestGain < (int)pCut->Volume ) { - pCutBest = pCut; - BestGain = pCut->Volume; + assert( pCut->Volume >= 0 ); + BestGain = pCut->Volume; + // save this form + p->vForm = vForm; + // collect fanins + Vec_PtrClear( p->vFanins ); + for ( i = 0; i < (int)pCut->nLeaves; i++ ) + Vec_PtrPush( p->vFanins, pCut->ppLeaves[i] ); } } - if ( BestGain == -1 ) - return -1; - // we found a good cut - - // prepare the fanins - Vec_PtrClear( p->vFanins ); - for ( i = 0; i < (int)pCutBest->nLeaves; i++ ) - Vec_PtrPush( p->vFanins, pCutBest->ppLeaves[i] ); - // collect the TFO again - Abc_NodeCollectTfoCands( pNode->pNtk, pNode, p->vFanins, Required, p->vLevels, p->vTfo ); - // perform the decomposition - Rwr_CutDecompose( p, pNode, pCutBest, p->vForm ); - // the best fanins are in p->vFanins, the result of decomposition is in p->vForm return BestGain; } @@ -102,46 +93,113 @@ int Rwr_NodeRewrite( Rwr_Man_t * p, Abc_Obj_t * pNode ) SeeAlso [] ***********************************************************************/ -void Rwr_CutEvaluate( Rwr_Man_t * p, Abc_Obj_t * pRoot, Rwr_Cut_t * pCut ) +Vec_Int_t * Rwr_CutEvaluate( Rwr_Man_t * p, Abc_Obj_t * pRoot, Rwr_Cut_t * pCut, int NodeMax, int LevelMax ) { - Abc_Obj_t * pNode, * pFanin0, * pFanin1; - Rwr_Node_t * pNodeFor; - int i; - // mark forest PIs corresponding to cut leaves - Vec_PtrClear( p->vTfoFor ); - for ( i = 0; i < (int)pCut->nLeaves; i++ ) + Vec_Ptr_t Vector = {0,0,0}, * vFanins = &Vector; + Vec_Ptr_t * vSubgraphs; + Vec_Int_t * vFormBest; + Rwr_Node_t * pNode; + int GainCur, GainBest = -1, i; + // find the matching class of subgraphs + vSubgraphs = Vec_VecEntry( p->vClasses, p->pMap[pCut->uTruth] ); + // determine the best subgraph + Vec_PtrForEachEntry( vSubgraphs, pNode, i ) { - pNodeFor = p->vForest->pArray[i]; - Vec_PtrPush( p->vTfoFor, pNodeFor ); - pCut->ppLeaves[i]->pData = pNodeFor; - pNodeFor->fMark = 1; + // create the fanin array + vFanins->nSize = pCut->nLeaves; + vFanins->pArray = pCut->ppLeaves; + // detect how many unlabeled nodes will be reused + GainCur = Abc_NodeStrashDecCount( pRoot->pNtk->pManFunc, vFanins, (Vec_Int_t *)pNode->pNext, + p->vLevNums, NodeMax, LevelMax ); + if ( GainBest < GainCur ) + { + GainBest = GainCur; + vFormBest = (Vec_Int_t *)pNode->pNext; + } } - // detect forest nodes corresponding to TFO - Vec_PtrForEachEntry( p->vTfo, pNode, i ) - { - pFanin0 = Abc_ObjFanin0(pNode); - if ( pFanin0->pData == NULL ) - continue; - pFanin1 = Abc_ObjFanin1(pNode); - if ( pFanin1->pData == NULL ) - continue; + if ( GainBest == -1 ) + return NULL; + pCut->Volume = GainBest; + return vFormBest; +} - } - // find the best implementation of the root +/**Function************************************************************* + + Synopsis [Adds one node.] - // assign costs + Description [] + + SideEffects [] + + SeeAlso [] - // clean the nodes - for ( i = 0; i < (int)pCut->nLeaves; i++ ) - pCut->ppLeaves[i]->pData = NULL; - Vec_PtrForEachEntry( p->vTfo, pNode, i ) - pNode->pData = NULL; +***********************************************************************/ +int Rwr_TravCollect_rec( Rwr_Man_t * p, Rwr_Node_t * pNode, Vec_Int_t * vForm ) +{ + Ft_Node_t Node, NodeA, NodeB; + int Node0, Node1; + // elementary variable + if ( pNode->fUsed ) + return ((pNode->Id - 1) << 1); + // previously visited node + if ( pNode->TravId == p->nTravIds ) + return pNode->Volume; + pNode->TravId = p->nTravIds; + // solve for children + Node0 = Rwr_TravCollect_rec( p, Rwr_Regular(pNode->p0), vForm ); + Node1 = Rwr_TravCollect_rec( p, Rwr_Regular(pNode->p1), vForm ); + // create the decomposition node(s) + if ( pNode->fExor ) + { + assert( !Rwr_IsComplement(pNode->p0) ); + assert( !Rwr_IsComplement(pNode->p1) ); + NodeA.fIntern = 1; + NodeA.fConst = 0; + NodeA.fCompl = 0; + NodeA.fCompl0 = !(Node0 & 1); + NodeA.fCompl1 = (Node1 & 1); + NodeA.iFanin0 = (Node0 >> 1); + NodeA.iFanin1 = (Node1 >> 1); + Vec_IntPush( vForm, Ft_Node2Int(NodeA) ); + + NodeB.fIntern = 1; + NodeB.fConst = 0; + NodeB.fCompl = 0; + NodeB.fCompl0 = (Node0 & 1); + NodeB.fCompl1 = !(Node1 & 1); + NodeB.iFanin0 = (Node0 >> 1); + NodeB.iFanin1 = (Node1 >> 1); + Vec_IntPush( vForm, Ft_Node2Int(NodeB) ); + + Node.fIntern = 1; + Node.fConst = 0; + Node.fCompl = 0; + Node.fCompl0 = 1; + Node.fCompl1 = 1; + Node.iFanin0 = vForm->nSize - 2; + Node.iFanin1 = vForm->nSize - 1; + Vec_IntPush( vForm, Ft_Node2Int(Node) ); + } + else + { + Node.fIntern = 1; + Node.fConst = 0; + Node.fCompl = 0; + Node.fCompl0 = Rwr_IsComplement(pNode->p0) ^ (Node0 & 1); + Node.fCompl1 = Rwr_IsComplement(pNode->p1) ^ (Node1 & 1); + Node.iFanin0 = (Node0 >> 1); + Node.iFanin1 = (Node1 >> 1); + Vec_IntPush( vForm, Ft_Node2Int(Node) ); + } + // save the number of this node + pNode->Volume = ((vForm->nSize - 1) << 1) | pNode->fExor; + return pNode->Volume; } /**Function************************************************************* - Synopsis [Decomposes the cut.] + Synopsis [Preprocesses subgraphs rooted at this node.] Description [] @@ -150,11 +208,45 @@ void Rwr_CutEvaluate( Rwr_Man_t * p, Abc_Obj_t * pRoot, Rwr_Cut_t * pCut ) SeeAlso [] ***********************************************************************/ -void Rwr_CutDecompose( Rwr_Man_t * p, Abc_Obj_t * pRoot, Rwr_Cut_t * pCut, Vec_Int_t * vForm ) +void Rwr_NodePreprocess( Rwr_Man_t * p, Rwr_Node_t * pNode ) { - + Vec_Int_t * vForm; + int i, Root; + vForm = Vec_IntAlloc( 10 ); + for ( i = 0; i < 5; i++ ) + Vec_IntPush( vForm, 0 ); + // collect the nodes + Rwr_ManIncTravId( p ); + Root = Rwr_TravCollect_rec( p, pNode, vForm ); + if ( Root & 1 ) + Ft_FactorComplement( vForm ); + pNode->pNext = (Rwr_Node_t *)vForm; } +/**Function************************************************************* + + Synopsis [Preprocesses computed library of subgraphs.] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +void Rwr_ManPreprocess( Rwr_Man_t * p ) +{ + Rwr_Node_t * pNode; + int i, k; + // put the nodes into the structure + p->vClasses = Vec_VecAlloc( 222 ); + for ( i = 0; i < p->nFuncs; i++ ) + for ( pNode = p->pTable[i]; pNode; pNode = pNode->pNext ) + Vec_VecPush( p->vClasses, p->pMap[pNode->uTruth], pNode ); + // compute decomposition forms for each node + Vec_VecForEachEntry( p->vClasses, pNode, i, k ) + Rwr_NodePreprocess( p, pNode ); +} //////////////////////////////////////////////////////////////////////// /// END OF FILE /// diff --git a/src/opt/rwr/rwrExp.c b/src/opt/rwr/rwrExp.c index a5c355a9..e93a2611 100644 --- a/src/opt/rwr/rwrExp.c +++ b/src/opt/rwr/rwrExp.c @@ -69,7 +69,7 @@ void Rwt_Man4ExploreStart() // canonical forms p->nFuncs = (1<<16); // canonical forms, phases, perms - Extra_Truth4VarNPN( &p->puCanons, NULL, NULL ); + Extra_Truth4VarNPN( &p->puCanons, NULL, NULL, NULL ); // counters p->pnCounts = ALLOC( int, p->nFuncs ); memset( p->pnCounts, 0, sizeof(int) * p->nFuncs ); diff --git a/src/opt/rwr/rwrLib.c b/src/opt/rwr/rwrLib.c index a283e38f..fbcb8916 100644 --- a/src/opt/rwr/rwrLib.c +++ b/src/opt/rwr/rwrLib.c @@ -25,14 +25,7 @@ //////////////////////////////////////////////////////////////////////// static Rwr_Node_t * Rwr_ManTryNode( Rwr_Man_t * p, Rwr_Node_t * p0, Rwr_Node_t * p1, int fExor, int Level, int Volume ); -static Rwr_Node_t * Rwr_ManAddNode( Rwr_Man_t * p, Rwr_Node_t * p0, Rwr_Node_t * p1, int fExor, int Level, int Volume ); -static int Rwr_ManNodeVolume( Rwr_Man_t * p, Rwr_Node_t * p0, Rwr_Node_t * p1 ); - -static void Rwr_ManIncTravId_int( Rwr_Man_t * p ); -static inline void Rwr_ManIncTravId( Rwr_Man_t * p ) { if ( p->nTravIds++ == 0x8FFFFFFF ) Rwr_ManIncTravId_int( p ); } - static void Rwr_MarkUsed_rec( Rwr_Man_t * p, Rwr_Node_t * pNode ); -static void Rwr_ListAddToTail( Rwr_Node_t ** ppList, Rwr_Node_t * pNode ); //////////////////////////////////////////////////////////////////////// /// FUNCTION DEFITIONS /// @@ -119,8 +112,7 @@ save : if ( p0->fUsed ) { p->vForest->pArray[k] = p0; - p0->Id = k; - k++; + p0->Id = k++; } p->vForest->nSize = k; printf( "Total canonical = %4d. Total used = %5d.\n", nNodes, p->vForest->nSize ); @@ -128,202 +120,6 @@ save : /**Function************************************************************* - Synopsis [Writes to file.] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -void Rwr_ManWriteToFile( Rwr_Man_t * p, char * pFileName ) -{ - FILE * pFile; - Rwr_Node_t * pNode; - unsigned * pBuffer; - int i, nEntries, clk = clock(); - // prepare the buffer - nEntries = p->vForest->nSize - 5; - pBuffer = ALLOC( unsigned, nEntries * 2 ); - for ( i = 0; i < nEntries; i++ ) - { - pNode = p->vForest->pArray[i+5]; - pBuffer[2*i + 0] = (Rwr_Regular(pNode->p0)->Id << 1) | Rwr_IsComplement(pNode->p0); - pBuffer[2*i + 1] = (Rwr_Regular(pNode->p1)->Id << 1) | Rwr_IsComplement(pNode->p1); - // save EXOR flag - pBuffer[2*i + 0] = (pBuffer[2*i + 0] << 1) | pNode->fExor; - - } - pFile = fopen( pFileName, "wb" ); - fwrite( &nEntries, sizeof(int), 1, pFile ); - fwrite( pBuffer, sizeof(unsigned), nEntries * 2, pFile ); - free( pBuffer ); - fclose( pFile ); - printf( "The number of nodes saved = %d. ", nEntries ); PRT( "Saving", clock() - clk ); -} - -/**Function************************************************************* - - Synopsis [Loads data from file.] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -void Rwr_ManLoadFromFile( Rwr_Man_t * p, char * pFileName ) -{ - FILE * pFile; - Rwr_Node_t * p0, * p1; - unsigned * pBuffer; - int Level, Volume, nEntries, fExor; - int i, clk = clock(); - - // load the data - pFile = fopen( pFileName, "rb" ); - if ( pFile == NULL ) - { - printf( "Rwr_ManLoadFromFile: Cannot open file \"%s\".\n", pFileName ); - return; - } - fread( &nEntries, sizeof(int), 1, pFile ); - pBuffer = ALLOC( unsigned, nEntries * 2 ); - fread( pBuffer, sizeof(unsigned), nEntries * 2, pFile ); - fclose( pFile ); - // reconstruct the forest - for ( i = 0; i < nEntries; i++ ) - { - // get EXOR flag - fExor = (pBuffer[2*i + 0] & 1); - pBuffer[2*i + 0] = (pBuffer[2*i + 0] >> 1); - // get the nodes - p0 = p->vForest->pArray[pBuffer[2*i + 0] >> 1]; - p1 = p->vForest->pArray[pBuffer[2*i + 1] >> 1]; - // compute the level and volume of the new nodes - Level = 1 + ABC_MAX( p0->Level, p1->Level ); - Volume = 1 + Rwr_ManNodeVolume( p, p0, p1 ); - // set the complemented attributes - p0 = Rwr_NotCond( p0, (pBuffer[2*i + 0] & 1) ); - p1 = Rwr_NotCond( p1, (pBuffer[2*i + 1] & 1) ); - // add the node -// Rwr_ManTryNode( p, p0, p1, Level, Volume ); - Rwr_ManAddNode( p, p0, p1, fExor, Level, Volume + fExor ); - } - free( pBuffer ); - printf( "The number of classes = %d. Canonical nodes = %d.\n", p->nClasses, p->nAdded ); - printf( "The number of nodes loaded = %d. ", nEntries ); PRT( "Loading", clock() - clk ); -} - -/**Function************************************************************* - - Synopsis [Adds one node.] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -void Rwr_ManIncTravId_int( Rwr_Man_t * p ) -{ - Rwr_Node_t * pNode; - int i; - Vec_PtrForEachEntry( p->vForest, pNode, i ) - pNode->TravId = 0; - p->nTravIds = 1; -} - -/**Function************************************************************* - - Synopsis [Adds one node.] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -void Rwr_MarkUsed_rec( Rwr_Man_t * p, Rwr_Node_t * pNode ) -{ - if ( pNode->fUsed || pNode->TravId == p->nTravIds ) - return; - pNode->TravId = p->nTravIds; - pNode->fUsed = 1; - Rwr_MarkUsed_rec( p, Rwr_Regular(pNode->p0) ); - Rwr_MarkUsed_rec( p, Rwr_Regular(pNode->p1) ); -} - -/**Function************************************************************* - - Synopsis [Adds one node.] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -void Rwr_Trav_rec( Rwr_Man_t * p, Rwr_Node_t * pNode, int * pVolume ) -{ - if ( pNode->fMark || pNode->TravId == p->nTravIds ) - return; - pNode->TravId = p->nTravIds; - (*pVolume)++; - if ( pNode->fExor ) - (*pVolume)++; - Rwr_Trav_rec( p, Rwr_Regular(pNode->p0), pVolume ); - Rwr_Trav_rec( p, Rwr_Regular(pNode->p1), pVolume ); -} - -/**Function************************************************************* - - Synopsis [Adds one node.] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -void Rwr_Trav2_rec( Rwr_Man_t * p, Rwr_Node_t * pNode, int * pVolume ) -{ - if ( pNode->fMark || pNode->TravId == p->nTravIds ) - return; - pNode->TravId = p->nTravIds; - (*pVolume)++; - Rwr_Trav2_rec( p, Rwr_Regular(pNode->p0), pVolume ); - Rwr_Trav2_rec( p, Rwr_Regular(pNode->p1), pVolume ); -} - -/**Function************************************************************* - - Synopsis [Adds one node.] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -int Rwr_ManNodeVolume( Rwr_Man_t * p, Rwr_Node_t * p0, Rwr_Node_t * p1 ) -{ - int Volume = 0; - Rwr_ManIncTravId( p ); - Rwr_Trav_rec( p, p0, &Volume ); - Rwr_Trav_rec( p, p1, &Volume ); - return Volume; -} - -/**Function************************************************************* - Synopsis [Adds one node.] Description [] @@ -361,6 +157,7 @@ Rwr_Node_t * Rwr_ManTryNode( Rwr_Man_t * p, Rwr_Node_t * p0, Rwr_Node_t * p1, in // if ( pOld->Level < (unsigned)Level && pOld->Volume == (unsigned)Volume ) // return NULL; } +/* // enumerate through the nodes with the opposite polarity for ( pOld = p->pTable[~uTruth & 0xFFFF]; pOld; pOld = pOld->pNext ) { @@ -371,6 +168,7 @@ Rwr_Node_t * Rwr_ManTryNode( Rwr_Man_t * p, Rwr_Node_t * p0, Rwr_Node_t * p1, in // if ( pOld->Level < (unsigned)Level && pOld->Volume == (unsigned)Volume ) // return NULL; } +*/ // count the classes if ( p->pTable[uTruth] == NULL && p->puCanons[uTruth] == uTruth ) p->nClasses++; @@ -381,7 +179,6 @@ Rwr_Node_t * Rwr_ManTryNode( Rwr_Man_t * p, Rwr_Node_t * p0, Rwr_Node_t * p1, in pNew->uTruth = uTruth; pNew->Level = Level; pNew->Volume = Volume; - pNew->fMark = 0; pNew->fUsed = 0; pNew->fExor = fExor; pNew->p0 = p0; @@ -421,7 +218,6 @@ Rwr_Node_t * Rwr_ManAddNode( Rwr_Man_t * p, Rwr_Node_t * p0, Rwr_Node_t * p1, in pNew->uTruth = uTruth; pNew->Level = Level; pNew->Volume = Volume; - pNew->fMark = 0; pNew->fUsed = 0; pNew->fExor = fExor; pNew->p0 = p0; @@ -434,9 +230,9 @@ Rwr_Node_t * Rwr_ManAddNode( Rwr_Man_t * p, Rwr_Node_t * p0, Rwr_Node_t * p1, in // add to the list p->nAdded++; - if ( p->pTable[p->pMap[uTruth]] == NULL ) + if ( p->pTable[uTruth] == NULL ) p->nClasses++; - Rwr_ListAddToTail( p->pTable + p->pMap[uTruth], pNew ); + Rwr_ListAddToTail( p->pTable + uTruth, pNew ); return pNew; } @@ -451,7 +247,7 @@ Rwr_Node_t * Rwr_ManAddNode( Rwr_Man_t * p, Rwr_Node_t * p0, Rwr_Node_t * p1, in SeeAlso [] ***********************************************************************/ -Rwr_Node_t * Rwr_ManAddVar( Rwr_Man_t * p, unsigned uTruth, char * pFileName ) +Rwr_Node_t * Rwr_ManAddVar( Rwr_Man_t * p, unsigned uTruth, int fPrecompute ) { Rwr_Node_t * pNew; pNew = (Rwr_Node_t *)Extra_MmFixedEntryFetch( p->pMmNode ); @@ -460,45 +256,22 @@ Rwr_Node_t * Rwr_ManAddVar( Rwr_Man_t * p, unsigned uTruth, char * pFileName ) pNew->uTruth = uTruth; pNew->Level = 0; pNew->Volume = 0; - pNew->fMark = 1; pNew->fUsed = 1; pNew->fExor = 0; pNew->p0 = NULL; pNew->p1 = NULL; pNew->pNext = NULL; Vec_PtrPush( p->vForest, pNew ); - if ( pFileName == NULL ) + if ( fPrecompute ) Rwr_ListAddToTail( p->pTable + uTruth, pNew ); -// else -// Rwr_ListAddToTail( p->pTable + p->pMap[uTruth], pNew ); return pNew; } -/**Function************************************************************* - - Synopsis [Adds the node to the end of the list.] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -void Rwr_ListAddToTail( Rwr_Node_t ** ppList, Rwr_Node_t * pNode ) -{ - Rwr_Node_t * pTemp; - // find the last one - for ( pTemp = *ppList; pTemp; pTemp = pTemp->pNext ) - ppList = &pTemp->pNext; - // attach at the end - *ppList = pNode; -} /**Function************************************************************* - Synopsis [Prints one rwr node.] + Synopsis [Adds one node.] Description [] @@ -507,85 +280,19 @@ void Rwr_ListAddToTail( Rwr_Node_t ** ppList, Rwr_Node_t * pNode ) SeeAlso [] ***********************************************************************/ -void Rwr_NodePrint_rec( FILE * pFile, Rwr_Node_t * pNode ) +void Rwr_MarkUsed_rec( Rwr_Man_t * p, Rwr_Node_t * pNode ) { - assert( !Rwr_IsComplement(pNode) ); - - if ( pNode->Id == 0 ) - { - fprintf( pFile, "Const1" ); - return; - } - - if ( pNode->Id < 5 ) - { - fprintf( pFile, "%c", 'a' + pNode->Id - 1 ); + if ( pNode->fUsed || pNode->TravId == p->nTravIds ) return; - } - - if ( Rwr_IsComplement(pNode->p0) ) - { - if ( Rwr_Regular(pNode->p0)->Id < 5 ) - { - Rwr_NodePrint_rec( pFile, Rwr_Regular(pNode->p0) ); - fprintf( pFile, "\'" ); - } - else - { - fprintf( pFile, "(" ); - Rwr_NodePrint_rec( pFile, Rwr_Regular(pNode->p0) ); - fprintf( pFile, ")\'" ); - } - } - else - { - if ( Rwr_Regular(pNode->p0)->Id < 5 ) - { - Rwr_NodePrint_rec( pFile, Rwr_Regular(pNode->p0) ); - } - else - { - fprintf( pFile, "(" ); - Rwr_NodePrint_rec( pFile, Rwr_Regular(pNode->p0) ); - fprintf( pFile, ")" ); - } - } - - if ( pNode->fExor ) - fprintf( pFile, "+" ); - - if ( Rwr_IsComplement(pNode->p1) ) - { - if ( Rwr_Regular(pNode->p1)->Id < 5 ) - { - Rwr_NodePrint_rec( pFile, Rwr_Regular(pNode->p1) ); - fprintf( pFile, "\'" ); - } - else - { - fprintf( pFile, "(" ); - Rwr_NodePrint_rec( pFile, Rwr_Regular(pNode->p1) ); - fprintf( pFile, ")\'" ); - } - } - else - { - if ( Rwr_Regular(pNode->p1)->Id < 5 ) - { - Rwr_NodePrint_rec( pFile, Rwr_Regular(pNode->p1) ); - } - else - { - fprintf( pFile, "(" ); - Rwr_NodePrint_rec( pFile, Rwr_Regular(pNode->p1) ); - fprintf( pFile, ")" ); - } - } + pNode->TravId = p->nTravIds; + pNode->fUsed = 1; + Rwr_MarkUsed_rec( p, Rwr_Regular(pNode->p0) ); + Rwr_MarkUsed_rec( p, Rwr_Regular(pNode->p1) ); } /**Function************************************************************* - Synopsis [Prints one rwr node.] + Synopsis [Adds one node.] Description [] @@ -594,27 +301,21 @@ void Rwr_NodePrint_rec( FILE * pFile, Rwr_Node_t * pNode ) SeeAlso [] ***********************************************************************/ -void Rwr_NodePrint( FILE * pFile, Rwr_Man_t * p, Rwr_Node_t * pNode ) +void Rwr_Trav_rec( Rwr_Man_t * p, Rwr_Node_t * pNode, int * pVolume ) { - unsigned uTruth; - fprintf( pFile, "%5d : ", pNode->Id ); - Extra_PrintHex( pFile, pNode->uTruth, 4 ); - fprintf( pFile, " tt=" ); - uTruth = pNode->uTruth; - Extra_PrintBinary( pFile, &uTruth, 16 ); -// fprintf( pFile, " cn=", pNode->Id ); -// uTruth = p->puCanons[pNode->uTruth]; -// Extra_PrintBinary( pFile, &uTruth, 16 ); - fprintf( pFile, " lev=%d", pNode->Level ); - fprintf( pFile, " vol=%d", pNode->Volume ); - fprintf( pFile, " " ); - Rwr_NodePrint_rec( pFile, pNode ); - fprintf( pFile, "\n" ); + if ( pNode->fUsed || pNode->TravId == p->nTravIds ) + return; + pNode->TravId = p->nTravIds; + (*pVolume)++; + if ( pNode->fExor ) + (*pVolume)++; + Rwr_Trav_rec( p, Rwr_Regular(pNode->p0), pVolume ); + Rwr_Trav_rec( p, Rwr_Regular(pNode->p1), pVolume ); } /**Function************************************************************* - Synopsis [Prints one rwr node.] + Synopsis [Adds one node.] Description [] @@ -623,58 +324,18 @@ void Rwr_NodePrint( FILE * pFile, Rwr_Man_t * p, Rwr_Node_t * pNode ) SeeAlso [] ***********************************************************************/ -void Rwr_ManPrintFirst( Rwr_Man_t * p ) +int Rwr_ManNodeVolume( Rwr_Man_t * p, Rwr_Node_t * p0, Rwr_Node_t * p1 ) { - FILE * pFile; - Rwr_Node_t * pNode; - unsigned uTruth; - int nFuncs; - int Counter; - int i; - - pFile = fopen( "graph_lib.txt", "w" ); - - Counter = 0; - nFuncs = (1 << 16); - for ( i = 0; i < nFuncs; i++ ) - { - if ( p->pTable[i] == NULL ) - continue; - if ( i != p->puCanons[i] ) - continue; - - fprintf( pFile, "\nClass %3d ", Counter++ ); - - // count the volume of the bush - { - int Volume = 0; - int nFuncs = 0; - Rwr_ManIncTravId( p ); - for ( pNode = p->pTable[i]; pNode; pNode = pNode->pNext ) - { - if ( pNode->uTruth != p->puCanons[pNode->uTruth] ) - continue; - nFuncs++; - Rwr_Trav2_rec( p, pNode, &Volume ); - } - fprintf( pFile, "Functions = %2d. Volume = %2d. ", nFuncs, Volume ); - } - - uTruth = i; - Extra_PrintBinary( pFile, &uTruth, 16 ); - fprintf( pFile, "\n" ); - - for ( pNode = p->pTable[i]; pNode; pNode = pNode->pNext ) - if ( pNode->uTruth == p->puCanons[pNode->uTruth] ) - Rwr_NodePrint( pFile, p, pNode ); - } - - fclose( pFile ); + int Volume = 0; + Rwr_ManIncTravId( p ); + Rwr_Trav_rec( p, p0, &Volume ); + Rwr_Trav_rec( p, p1, &Volume ); + return Volume; } /**Function************************************************************* - Synopsis [Prints one rwr node.] + Synopsis [Adds one node.] Description [] @@ -683,54 +344,17 @@ void Rwr_ManPrintFirst( Rwr_Man_t * p ) SeeAlso [] ***********************************************************************/ -void Rwr_ManPrintNext( Rwr_Man_t * p ) +void Rwr_ManIncTravId( Rwr_Man_t * p ) { - FILE * pFile; Rwr_Node_t * pNode; - unsigned uTruth; - int nFuncs; - int Counter; int i; - - pFile = fopen( "graph_lib2.txt", "w" ); - - Counter = 0; - nFuncs = (1 << 16); - for ( i = 0; i < 222; i++ ) - { - if ( p->pTable[i] == NULL ) - continue; - - fprintf( pFile, "\nClass %3d ", Counter++ ); - - // count the volume of the bush - { - int Volume = 0; - int nFuncs = 0; - Rwr_ManIncTravId( p ); - for ( pNode = p->pTable[i]; pNode; pNode = pNode->pNext ) - { - if ( pNode->uTruth != p->puCanons[pNode->uTruth] ) - continue; - nFuncs++; - Rwr_Trav2_rec( p, pNode, &Volume ); - } - fprintf( pFile, "Functions = %2d. Volume = %2d. ", nFuncs, Volume ); - } - - uTruth = p->pTable[i]->uTruth; - Extra_PrintBinary( pFile, &uTruth, 16 ); - fprintf( pFile, "\n" ); - - for ( pNode = p->pTable[i]; pNode; pNode = pNode->pNext ) - if ( pNode->uTruth == p->puCanons[pNode->uTruth] ) - Rwr_NodePrint( pFile, p, pNode ); - } - - fclose( pFile ); + if ( p->nTravIds++ < 0x8FFFFFFF ) + return; + Vec_PtrForEachEntry( p->vForest, pNode, i ) + pNode->TravId = 0; + p->nTravIds = 1; } - //////////////////////////////////////////////////////////////////////// /// END OF FILE /// //////////////////////////////////////////////////////////////////////// diff --git a/src/opt/rwr/rwrMan.c b/src/opt/rwr/rwrMan.c index 3d40f79e..ead86b4e 100644 --- a/src/opt/rwr/rwrMan.c +++ b/src/opt/rwr/rwrMan.c @@ -24,34 +24,13 @@ /// DECLARATIONS /// //////////////////////////////////////////////////////////////////////// -// the following practical NPN classes of 4-variable functions were computed -// by considering all 4-input cuts appearing in IWLS, MCNC, and ISCAS benchmarks -#define RWR_NUM_CLASSES 135 -static int s_PracticalClasses[RWR_NUM_CLASSES] = { - 0x0000, 0x0001, 0x0003, 0x0006, 0x0007, 0x000f, 0x0016, 0x0017, 0x0018, 0x0019, 0x001b, - 0x001e, 0x001f, 0x003c, 0x003d, 0x003f, 0x0069, 0x006b, 0x006f, 0x007e, 0x007f, 0x00ff, - 0x0116, 0x0118, 0x0119, 0x011a, 0x011b, 0x011e, 0x011f, 0x012c, 0x012d, 0x012f, 0x013c, - 0x013d, 0x013e, 0x013f, 0x0168, 0x0169, 0x016f, 0x017f, 0x0180, 0x0181, 0x0182, 0x0183, - 0x0186, 0x0189, 0x018b, 0x018f, 0x0198, 0x0199, 0x019b, 0x01a8, 0x01a9, 0x01aa, 0x01ab, - 0x01ac, 0x01ad, 0x01ae, 0x01af, 0x01bf, 0x01e9, 0x01ea, 0x01eb, 0x01ee, 0x01ef, 0x01fe, - 0x033c, 0x033d, 0x033f, 0x0356, 0x0357, 0x0358, 0x0359, 0x035a, 0x035b, 0x035f, 0x0368, - 0x0369, 0x036c, 0x036e, 0x037d, 0x03c0, 0x03c1, 0x03c3, 0x03c7, 0x03cf, 0x03d4, 0x03d5, - 0x03d7, 0x03d8, 0x03d9, 0x03dc, 0x03dd, 0x03de, 0x03fc, 0x0660, 0x0661, 0x0666, 0x0669, - 0x066f, 0x0676, 0x067e, 0x0690, 0x0696, 0x0697, 0x069f, 0x06b1, 0x06b6, 0x06f0, 0x06f2, - 0x06f6, 0x06f9, 0x0776, 0x0778, 0x07b0, 0x07b1, 0x07b4, 0x07bc, 0x07f0, 0x07f2, 0x07f8, - 0x0ff0, 0x1683, 0x1696, 0x1698, 0x169e, 0x16e9, 0x178e, 0x17e8, 0x18e7, 0x19e6, 0x1be4, - 0x1ee1, 0x3cc3, 0x6996 -}; - -static unsigned short Rwr_FunctionPerm( unsigned uTruth, int Phase ); - //////////////////////////////////////////////////////////////////////// /// FUNCTION DEFITIONS /// //////////////////////////////////////////////////////////////////////// /**Function************************************************************* - Synopsis [Starts the resynthesis manager.] + Synopsis [Starts rewriting manager.] Description [] @@ -60,85 +39,56 @@ static unsigned short Rwr_FunctionPerm( unsigned uTruth, int Phase ); SeeAlso [] ***********************************************************************/ -Rwr_Man_t * Rwr_ManStart( char * pFileName ) +Rwr_Man_t * Rwr_ManStart( bool fPrecompute ) { Rwr_Man_t * p; - int i, k, nClasses; int clk = clock(); - int TableSize; - p = ALLOC( Rwr_Man_t, 1 ); memset( p, 0, sizeof(Rwr_Man_t) ); - p->nFuncs = (1<<16); - // create the table - TableSize = pFileName? 222: (1<<16); - p->pTable = ALLOC( Rwr_Node_t *, TableSize ); - memset( p->pTable, 0, sizeof(Rwr_Node_t *) * TableSize ); + p->nFuncs = (1<<16); // canonical forms, phases, perms - Extra_Truth4VarNPN( &p->puCanons, &p->pPhases, &p->pPerms ); - // initialize practical classes - p->pPractical = ALLOC( char, p->nFuncs ); - memset( p->pPractical, 0, sizeof(char) * p->nFuncs ); - for ( i = 0; i < RWR_NUM_CLASSES; i++ ) - p->pPractical[ s_PracticalClasses[i] ] = 1; - // set the mapping of classes - nClasses = 0; - p->pMap = ALLOC( unsigned char, p->nFuncs ); - for ( i = 0; i < p->nFuncs; i++ ) - { - if ( i != p->puCanons[i] ) - { - assert( i > p->puCanons[i] ); - p->pMap[i] = p->pMap[p->puCanons[i]]; - continue; - } - p->pMap[i] = nClasses++; - } - printf( "The number of NPN-canonical forms = %d.\n", nClasses ); - - // initialize permutations - for ( i = 0; i < 256; i++ ) - for ( k = 0; k < 16; k++ ) - p->puPerms[i][k] = Rwr_FunctionPerm( i, k ); - - // other stuff - p->nTravIds = 1; - p->vForest = Vec_PtrAlloc( 100 ); - p->vForm = Vec_IntAlloc( 50 ); - p->vFanins = Vec_PtrAlloc( 50 ); - p->vTfo = Vec_PtrAlloc( 50 ); - p->vTfoFor = Vec_PtrAlloc( 50 ); - p->vLevels = Vec_VecAlloc( 50 ); - p->pMmNode = Extra_MmFixedStart( sizeof(Rwr_Node_t) ); +clk = clock(); + Extra_Truth4VarNPN( &p->puCanons, &p->pPhases, &p->pPerms, &p->pMap ); +PRT( "NPN classes precomputation time", clock() - clk ); + // initialize practical NPN classes + p->pPractical = Rwr_ManGetPractical( p ); + // create the table + p->pTable = ALLOC( Rwr_Node_t *, p->nFuncs ); + memset( p->pTable, 0, sizeof(Rwr_Node_t *) * p->nFuncs ); + // create the elementary nodes assert( sizeof(Rwr_Node_t) == sizeof(Rwr_Cut_t) ); - - // initialize forest - Rwr_ManAddVar( p, 0x0000, pFileName ); // constant 0 - Rwr_ManAddVar( p, 0xAAAA, pFileName ); // var A - Rwr_ManAddVar( p, 0xCCCC, pFileName ); // var B - Rwr_ManAddVar( p, 0xF0F0, pFileName ); // var C - Rwr_ManAddVar( p, 0xFF00, pFileName ); // var D + p->pMmNode = Extra_MmFixedStart( sizeof(Rwr_Node_t) ); + p->vForest = Vec_PtrAlloc( 100 ); + Rwr_ManAddVar( p, 0x0000, fPrecompute ); // constant 0 + Rwr_ManAddVar( p, 0xAAAA, fPrecompute ); // var A + Rwr_ManAddVar( p, 0xCCCC, fPrecompute ); // var B + Rwr_ManAddVar( p, 0xF0F0, fPrecompute ); // var C + Rwr_ManAddVar( p, 0xFF00, fPrecompute ); // var D p->nClasses = 5; -PRT( "Manager startup time", clock() - clk ); - - // create the nodes - if ( pFileName == NULL ) - { // precompute + // other stuff + p->nTravIds = 1; + p->puPerms43 = Extra_TruthPerm43(); + p->vLevNums = Vec_IntAlloc( 50 ); + p->vFanins = Vec_PtrAlloc( 50 ); + if ( fPrecompute ) + { // precompute subgraphs Rwr_ManPrecompute( p ); - Rwr_ManWriteToFile( p, "data.aaa" ); - Rwr_ManPrintFirst( p ); + Rwr_ManWriteToArray( p ); + Rwr_ManPrint( p ); } else - { // load previously saved nodes - Rwr_ManLoadFromFile( p, pFileName ); - Rwr_ManPrintNext( p ); + { // load saved subgraphs + Rwr_ManLoadFromArray( p ); +// Rwr_ManPrint( p ); + Rwr_ManPreprocess( p ); + return NULL; } return p; } /**Function************************************************************* - Synopsis [Stops the resynthesis manager.] + Synopsis [Stops rewriting manager.] Description [] @@ -149,21 +99,27 @@ PRT( "Manager startup time", clock() - clk ); ***********************************************************************/ void Rwr_ManStop( Rwr_Man_t * p ) { + if ( p->vClasses ) + { + Rwr_Node_t * pNode; + int i, k; + Vec_VecForEachEntry( p->vClasses, pNode, i, k ) + Vec_IntFree( (Vec_Int_t *)pNode->pNext ); + } if ( p->vFanNums ) Vec_IntFree( p->vFanNums ); if ( p->vReqTimes ) Vec_IntFree( p->vReqTimes ); - Vec_IntFree( p->vForm ); - Vec_PtrFree( p->vFanins ); - Vec_PtrFree( p->vTfoFor ); - Vec_PtrFree( p->vTfo ); - Vec_VecFree( p->vLevels ); + if ( p->vClasses ) Vec_VecFree( p->vClasses ); Vec_PtrFree( p->vForest ); - Extra_MmFixedStop( p->pMmNode, 0 ); + Vec_IntFree( p->vLevNums ); + Vec_PtrFree( p->vFanins ); + Extra_MmFixedStop( p->pMmNode, 0 ); + free( p->pTable ); free( p->pPractical ); + free( p->puPerms43 ); free( p->puCanons ); free( p->pPhases ); free( p->pPerms ); free( p->pMap ); - free( p->pTable ); free( p ); } @@ -220,9 +176,10 @@ Vec_Int_t * Rwr_ManReadDecs( Rwr_Man_t * p ) return p->vForm; } + /**Function************************************************************* - Synopsis [Computes a phase of the 3-var function.] + Synopsis [Precomputes AIG subgraphs.] Description [] @@ -231,42 +188,13 @@ Vec_Int_t * Rwr_ManReadDecs( Rwr_Man_t * p ) SeeAlso [] ***********************************************************************/ -unsigned short Rwr_FunctionPerm( unsigned uTruth, int Phase ) +void Rwr_Precompute() { - static int Perm[16][4] = { - { 0, 1, 2, 3 }, // 0000 - skip - { 0, 1, 2, 3 }, // 0001 - skip - { 1, 0, 2, 3 }, // 0010 - { 0, 1, 2, 3 }, // 0011 - skip - { 2, 1, 0, 3 }, // 0100 - { 0, 2, 1, 3 }, // 0101 - { 2, 0, 1, 3 }, // 0110 - { 0, 1, 2, 3 }, // 0111 - skip - { 3, 1, 2, 0 }, // 1000 - { 0, 3, 2, 1 }, // 1001 - { 3, 0, 2, 1 }, // 1010 - { 0, 1, 3, 2 }, // 1011 - { 2, 3, 0, 1 }, // 1100 - { 0, 3, 1, 2 }, // 1101 - { 3, 0, 1, 2 }, // 1110 - { 0, 1, 2, 3 } // 1111 - skip - }; - int i, k, iRes; - unsigned uTruthRes; - assert( Phase < 16 ); - uTruthRes = 0; - for ( i = 0; i < 16; i++ ) - if ( uTruth & (1 << i) ) - { - for ( iRes = 0, k = 0; k < 4; k++ ) - if ( i & (1 << k) ) - iRes |= (1 << Perm[Phase][k]); - uTruthRes |= (1 << iRes); - } - return uTruthRes; + Rwr_Man_t * p; + p = Rwr_ManStart( 1 ); + Rwr_ManStop( p ); } - //////////////////////////////////////////////////////////////////////// /// END OF FILE /// //////////////////////////////////////////////////////////////////////// diff --git a/src/opt/rwr/rwrPrint.c b/src/opt/rwr/rwrPrint.c new file mode 100644 index 00000000..7c0bc212 --- /dev/null +++ b/src/opt/rwr/rwrPrint.c @@ -0,0 +1,239 @@ +/**CFile**************************************************************** + + FileName [rwrCut.c] + + SystemName [ABC: Logic synthesis and verification system.] + + PackageName [DAG-aware AIG rewriting package.] + + Synopsis [Cut computation.] + + Author [Alan Mishchenko] + + Affiliation [UC Berkeley] + + Date [Ver. 1.0. Started - June 20, 2005.] + + Revision [$Id: rwrCut.c,v 1.00 2005/06/20 00:00:00 alanmi Exp $] + +***********************************************************************/ + +#include "rwr.h" + +//////////////////////////////////////////////////////////////////////// +/// DECLARATIONS /// +//////////////////////////////////////////////////////////////////////// + +//////////////////////////////////////////////////////////////////////// +/// FUNCTION DEFITIONS /// +//////////////////////////////////////////////////////////////////////// + +/**Function************************************************************* + + Synopsis [Adds one node.] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +void Rwr_Trav2_rec( Rwr_Man_t * p, Rwr_Node_t * pNode, int * pVolume ) +{ + if ( pNode->fUsed || pNode->TravId == p->nTravIds ) + return; + pNode->TravId = p->nTravIds; + (*pVolume)++; + Rwr_Trav2_rec( p, Rwr_Regular(pNode->p0), pVolume ); + Rwr_Trav2_rec( p, Rwr_Regular(pNode->p1), pVolume ); +} + +/**Function************************************************************* + + Synopsis [Adds the node to the end of the list.] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +void Rwr_GetBushVolume( Rwr_Man_t * p, int Entry, int * pVolume, int * pnFuncs ) +{ + Rwr_Node_t * pNode; + int Volume = 0; + int nFuncs = 0; + Rwr_ManIncTravId( p ); + for ( pNode = p->pTable[Entry]; pNode; pNode = pNode->pNext ) + { + if ( pNode->uTruth != p->puCanons[pNode->uTruth] ) + continue; + nFuncs++; + Rwr_Trav2_rec( p, pNode, &Volume ); + } + *pVolume = Volume; + *pnFuncs = nFuncs; +} + +/**Function************************************************************* + + Synopsis [Prints one rwr node.] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +void Rwr_NodePrint_rec( FILE * pFile, Rwr_Node_t * pNode ) +{ + assert( !Rwr_IsComplement(pNode) ); + + if ( pNode->Id == 0 ) + { + fprintf( pFile, "Const1" ); + return; + } + + if ( pNode->Id < 5 ) + { + fprintf( pFile, "%c", 'a' + pNode->Id - 1 ); + return; + } + + if ( Rwr_IsComplement(pNode->p0) ) + { + if ( Rwr_Regular(pNode->p0)->Id < 5 ) + { + Rwr_NodePrint_rec( pFile, Rwr_Regular(pNode->p0) ); + fprintf( pFile, "\'" ); + } + else + { + fprintf( pFile, "(" ); + Rwr_NodePrint_rec( pFile, Rwr_Regular(pNode->p0) ); + fprintf( pFile, ")\'" ); + } + } + else + { + if ( Rwr_Regular(pNode->p0)->Id < 5 ) + { + Rwr_NodePrint_rec( pFile, Rwr_Regular(pNode->p0) ); + } + else + { + fprintf( pFile, "(" ); + Rwr_NodePrint_rec( pFile, Rwr_Regular(pNode->p0) ); + fprintf( pFile, ")" ); + } + } + + if ( pNode->fExor ) + fprintf( pFile, "+" ); + + if ( Rwr_IsComplement(pNode->p1) ) + { + if ( Rwr_Regular(pNode->p1)->Id < 5 ) + { + Rwr_NodePrint_rec( pFile, Rwr_Regular(pNode->p1) ); + fprintf( pFile, "\'" ); + } + else + { + fprintf( pFile, "(" ); + Rwr_NodePrint_rec( pFile, Rwr_Regular(pNode->p1) ); + fprintf( pFile, ")\'" ); + } + } + else + { + if ( Rwr_Regular(pNode->p1)->Id < 5 ) + { + Rwr_NodePrint_rec( pFile, Rwr_Regular(pNode->p1) ); + } + else + { + fprintf( pFile, "(" ); + Rwr_NodePrint_rec( pFile, Rwr_Regular(pNode->p1) ); + fprintf( pFile, ")" ); + } + } +} + +/**Function************************************************************* + + Synopsis [Prints one rwr node.] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +void Rwr_NodePrint( FILE * pFile, Rwr_Man_t * p, Rwr_Node_t * pNode ) +{ + unsigned uTruth; + fprintf( pFile, "%5d : ", pNode->Id ); + Extra_PrintHex( pFile, pNode->uTruth, 4 ); + fprintf( pFile, " tt=" ); + uTruth = pNode->uTruth; + Extra_PrintBinary( pFile, &uTruth, 16 ); +// fprintf( pFile, " cn=", pNode->Id ); +// uTruth = p->puCanons[pNode->uTruth]; +// Extra_PrintBinary( pFile, &uTruth, 16 ); + fprintf( pFile, " lev=%d", pNode->Level ); + fprintf( pFile, " vol=%d", pNode->Volume ); + fprintf( pFile, " " ); + Rwr_NodePrint_rec( pFile, pNode ); + fprintf( pFile, "\n" ); +} + +/**Function************************************************************* + + Synopsis [Prints one rwr node.] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +void Rwr_ManPrint( Rwr_Man_t * p ) +{ + FILE * pFile; + Rwr_Node_t * pNode; + unsigned uTruth; + int Counter, Volume, nFuncs, i; + pFile = fopen( "graph_lib.txt", "w" ); + Counter = 0; + nFuncs = (1 << 16); + for ( i = 0; i < nFuncs; i++ ) + { + if ( p->pTable[i] == NULL ) + continue; + if ( i != p->puCanons[i] ) + continue; + fprintf( pFile, "\nClass %3d ", Counter++ ); + Rwr_GetBushVolume( p, i, &Volume, &nFuncs ); + fprintf( pFile, "Functions = %2d. Volume = %2d. ", nFuncs, Volume ); + uTruth = i; + Extra_PrintBinary( pFile, &uTruth, 16 ); + fprintf( pFile, "\n" ); + for ( pNode = p->pTable[i]; pNode; pNode = pNode->pNext ) + if ( pNode->uTruth == p->puCanons[pNode->uTruth] ) + Rwr_NodePrint( pFile, p, pNode ); + } + fclose( pFile ); +} + +//////////////////////////////////////////////////////////////////////// +/// END OF FILE /// +//////////////////////////////////////////////////////////////////////// + + diff --git a/src/opt/rwr/rwrUtil.c b/src/opt/rwr/rwrUtil.c index 96d89db5..30b0cf69 100644 --- a/src/opt/rwr/rwrUtil.c +++ b/src/opt/rwr/rwrUtil.c @@ -24,12 +24,200 @@ /// DECLARATIONS /// //////////////////////////////////////////////////////////////////////// +// precomputed data +unsigned short s_RwrPracticalClasses[]; +unsigned short s_RwtAigSubgraphs[]; + //////////////////////////////////////////////////////////////////////// /// FUNCTION DEFITIONS /// //////////////////////////////////////////////////////////////////////// /**Function************************************************************* + Synopsis [Writes data.] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +void Rwr_ManWriteToArray( Rwr_Man_t * p ) +{ + FILE * pFile; + Rwr_Node_t * pNode; + unsigned Entry0, Entry1; + int i, nEntries, clk = clock(); + // prepare the buffer + nEntries = p->vForest->nSize - 5; + pFile = fopen( "npn4_aig_array.txt", "w" ); + fprintf( pFile, "static unsigned short s_RwtAigSubgraphs[] = \n{" ); + for ( i = 0; i < nEntries; i++ ) + { + if ( i % 5 == 0 ) + fprintf( pFile, "\n " ); + pNode = p->vForest->pArray[i+5]; + Entry0 = (Rwr_Regular(pNode->p0)->Id << 1) | Rwr_IsComplement(pNode->p0); + Entry1 = (Rwr_Regular(pNode->p1)->Id << 1) | Rwr_IsComplement(pNode->p1); + Entry0 = (Entry0 << 1) | pNode->fExor; + Extra_PrintHex( pFile, Entry0, 4 ); + fprintf( pFile, "," ); + Extra_PrintHex( pFile, Entry1, 4 ); + fprintf( pFile, ", " ); + } + if ( i % 5 == 0 ) + fprintf( pFile, "\n " ); + Extra_PrintHex( pFile, 0, 4 ); + fprintf( pFile, "," ); + Extra_PrintHex( pFile, 0, 4 ); + fprintf( pFile, " \n};\n" ); + fclose( pFile ); + printf( "The number of nodes saved = %d. ", nEntries ); PRT( "Saving", clock() - clk ); +} + +/**Function************************************************************* + + Synopsis [Loads data.] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +void Rwr_ManLoadFromArray( Rwr_Man_t * p ) +{ + unsigned short * pArray = s_RwtAigSubgraphs; + Rwr_Node_t * p0, * p1; + unsigned Entry0, Entry1; + int Level, Volume, nEntries, fExor; + int i, clk = clock(); + + // reconstruct the forest + for ( i = 0; ; i++ ) + { + Entry0 = pArray[2*i + 0]; + Entry1 = pArray[2*i + 1]; + if ( Entry0 == 0 && Entry1 == 0 ) + break; + // get EXOR flag + fExor = (Entry0 & 1); + Entry0 >>= 1; + // get the nodes + p0 = p->vForest->pArray[Entry0 >> 1]; + p1 = p->vForest->pArray[Entry1 >> 1]; + // compute the level and volume of the new nodes + Level = 1 + ABC_MAX( p0->Level, p1->Level ); + Volume = 1 + Rwr_ManNodeVolume( p, p0, p1 ); + // set the complemented attributes + p0 = Rwr_NotCond( p0, (Entry0 & 1) ); + p1 = Rwr_NotCond( p1, (Entry1 & 1) ); + // add the node +// Rwr_ManTryNode( p, p0, p1, Level, Volume ); + Rwr_ManAddNode( p, p0, p1, fExor, Level, Volume + fExor ); + } + nEntries = i - 1; + printf( "The number of classes = %d. Canonical nodes = %d.\n", p->nClasses, p->nAdded ); + printf( "The number of nodes loaded = %d. ", nEntries ); PRT( "Loading", clock() - clk ); +} + + +/**Function************************************************************* + + Synopsis [Writes.] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +void Rwr_ManWriteToFile( Rwr_Man_t * p, char * pFileName ) +{ + FILE * pFile; + Rwr_Node_t * pNode; + unsigned * pBuffer; + int i, nEntries, clk = clock(); + // prepare the buffer + nEntries = p->vForest->nSize - 5; + pBuffer = ALLOC( unsigned, nEntries * 2 ); + for ( i = 0; i < nEntries; i++ ) + { + pNode = p->vForest->pArray[i+5]; + pBuffer[2*i + 0] = (Rwr_Regular(pNode->p0)->Id << 1) | Rwr_IsComplement(pNode->p0); + pBuffer[2*i + 1] = (Rwr_Regular(pNode->p1)->Id << 1) | Rwr_IsComplement(pNode->p1); + // save EXOR flag + pBuffer[2*i + 0] = (pBuffer[2*i + 0] << 1) | pNode->fExor; + + } + pFile = fopen( pFileName, "wb" ); + fwrite( &nEntries, sizeof(int), 1, pFile ); + fwrite( pBuffer, sizeof(unsigned), nEntries * 2, pFile ); + free( pBuffer ); + fclose( pFile ); + printf( "The number of nodes saved = %d. ", nEntries ); PRT( "Saving", clock() - clk ); +} + +/**Function************************************************************* + + Synopsis [Loads data.] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +void Rwr_ManLoadFromFile( Rwr_Man_t * p, char * pFileName ) +{ + FILE * pFile; + Rwr_Node_t * p0, * p1; + unsigned * pBuffer; + int Level, Volume, nEntries, fExor; + int i, clk = clock(); + + // load the data + pFile = fopen( pFileName, "rb" ); + if ( pFile == NULL ) + { + printf( "Rwr_ManLoadFromFile: Cannot open file \"%s\".\n", pFileName ); + return; + } + fread( &nEntries, sizeof(int), 1, pFile ); + pBuffer = ALLOC( unsigned, nEntries * 2 ); + fread( pBuffer, sizeof(unsigned), nEntries * 2, pFile ); + fclose( pFile ); + // reconstruct the forest + for ( i = 0; i < nEntries; i++ ) + { + // get EXOR flag + fExor = (pBuffer[2*i + 0] & 1); + pBuffer[2*i + 0] = (pBuffer[2*i + 0] >> 1); + // get the nodes + p0 = p->vForest->pArray[pBuffer[2*i + 0] >> 1]; + p1 = p->vForest->pArray[pBuffer[2*i + 1] >> 1]; + // compute the level and volume of the new nodes + Level = 1 + ABC_MAX( p0->Level, p1->Level ); + Volume = 1 + Rwr_ManNodeVolume( p, p0, p1 ); + // set the complemented attributes + p0 = Rwr_NotCond( p0, (pBuffer[2*i + 0] & 1) ); + p1 = Rwr_NotCond( p1, (pBuffer[2*i + 1] & 1) ); + // add the node +// Rwr_ManTryNode( p, p0, p1, Level, Volume ); + Rwr_ManAddNode( p, p0, p1, fExor, Level, Volume + fExor ); + } + free( pBuffer ); + printf( "The number of classes = %d. Canonical nodes = %d.\n", p->nClasses, p->nAdded ); + printf( "The number of nodes loaded = %d. ", nEntries ); PRT( "Loading", clock() - clk ); +} + + +/**Function************************************************************* + Synopsis [Creates the array of fanout counters.] Description [] @@ -52,8 +240,436 @@ Vec_Int_t * Rwt_NtkFanoutCounters( Abc_Ntk_t * pNtk ) return vFanNums; } +/**Function************************************************************* + + Synopsis [Adds the node to the end of the list.] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +void Rwr_ListAddToTail( Rwr_Node_t ** ppList, Rwr_Node_t * pNode ) +{ + Rwr_Node_t * pTemp; + // find the last one + for ( pTemp = *ppList; pTemp; pTemp = pTemp->pNext ) + ppList = &pTemp->pNext; + // attach at the end + *ppList = pNode; +} + +/**Function************************************************************* + + Synopsis [Create practical classes.] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +char * Rwr_ManGetPractical( Rwr_Man_t * p ) +{ + char * pPractical; + int i; + pPractical = ALLOC( char, p->nFuncs ); + memset( pPractical, 0, sizeof(char) * p->nFuncs ); + pPractical[0] = 1; + for ( i = 1; ; i++ ) + { + if ( s_RwrPracticalClasses[i] == 0 ) + break; + pPractical[ s_RwrPracticalClasses[i] ] = 1; + } + return pPractical; +} + //////////////////////////////////////////////////////////////////////// /// END OF FILE /// //////////////////////////////////////////////////////////////////////// +// the following 135 practical NPN classes of 4-variable functions were computed +// by considering all 4-input cuts appearing in IWLS, MCNC, and ISCAS benchmarks +static unsigned short s_RwrPracticalClasses[] = +{ + 0x0000, 0x0001, 0x0003, 0x0006, 0x0007, 0x000f, 0x0016, 0x0017, 0x0018, 0x0019, 0x001b, + 0x001e, 0x001f, 0x003c, 0x003d, 0x003f, 0x0069, 0x006b, 0x006f, 0x007e, 0x007f, 0x00ff, + 0x0116, 0x0118, 0x0119, 0x011a, 0x011b, 0x011e, 0x011f, 0x012c, 0x012d, 0x012f, 0x013c, + 0x013d, 0x013e, 0x013f, 0x0168, 0x0169, 0x016f, 0x017f, 0x0180, 0x0181, 0x0182, 0x0183, + 0x0186, 0x0189, 0x018b, 0x018f, 0x0198, 0x0199, 0x019b, 0x01a8, 0x01a9, 0x01aa, 0x01ab, + 0x01ac, 0x01ad, 0x01ae, 0x01af, 0x01bf, 0x01e9, 0x01ea, 0x01eb, 0x01ee, 0x01ef, 0x01fe, + 0x033c, 0x033d, 0x033f, 0x0356, 0x0357, 0x0358, 0x0359, 0x035a, 0x035b, 0x035f, 0x0368, + 0x0369, 0x036c, 0x036e, 0x037d, 0x03c0, 0x03c1, 0x03c3, 0x03c7, 0x03cf, 0x03d4, 0x03d5, + 0x03d7, 0x03d8, 0x03d9, 0x03dc, 0x03dd, 0x03de, 0x03fc, 0x0660, 0x0661, 0x0666, 0x0669, + 0x066f, 0x0676, 0x067e, 0x0690, 0x0696, 0x0697, 0x069f, 0x06b1, 0x06b6, 0x06f0, 0x06f2, + 0x06f6, 0x06f9, 0x0776, 0x0778, 0x07b0, 0x07b1, 0x07b4, 0x07bc, 0x07f0, 0x07f2, 0x07f8, + 0x0ff0, 0x1683, 0x1696, 0x1698, 0x169e, 0x16e9, 0x178e, 0x17e8, 0x18e7, 0x19e6, 0x1be4, + 0x1ee1, 0x3cc3, 0x6996, 0x0000 +}; + +static unsigned short s_RwtAigSubgraphs[] = +{ + 0x0008,0x0002, 0x000a,0x0002, 0x0008,0x0003, 0x000a,0x0003, 0x0009,0x0002, + 0x000c,0x0002, 0x000e,0x0002, 0x000c,0x0003, 0x000e,0x0003, 0x000d,0x0002, + 0x000c,0x0004, 0x000e,0x0004, 0x000c,0x0005, 0x000e,0x0005, 0x000d,0x0004, + 0x0010,0x0002, 0x0012,0x0002, 0x0010,0x0003, 0x0012,0x0003, 0x0011,0x0002, + 0x0010,0x0004, 0x0012,0x0004, 0x0010,0x0005, 0x0012,0x0005, 0x0011,0x0004, + 0x0010,0x0006, 0x0012,0x0006, 0x0010,0x0007, 0x0012,0x0007, 0x0011,0x0006, + 0x0016,0x0005, 0x0014,0x0006, 0x0016,0x0006, 0x0014,0x0007, 0x0016,0x0007, + 0x0015,0x0006, 0x0014,0x0008, 0x0016,0x0008, 0x0014,0x0009, 0x0016,0x0009, + 0x0015,0x0008, 0x0018,0x0006, 0x001a,0x0006, 0x0018,0x0007, 0x001a,0x0007, + 0x0019,0x0006, 0x0018,0x0009, 0x001a,0x0009, 0x0019,0x0008, 0x001e,0x0005, + 0x001c,0x0006, 0x001e,0x0006, 0x001c,0x0007, 0x001e,0x0007, 0x001d,0x0006, + 0x001c,0x0008, 0x001e,0x0008, 0x001c,0x0009, 0x001e,0x0009, 0x001d,0x0008, + 0x0020,0x0006, 0x0022,0x0006, 0x0020,0x0007, 0x0022,0x0007, 0x0021,0x0006, + 0x0020,0x0008, 0x0022,0x0008, 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