mirror of https://github.com/YosysHQ/abc.git
Experiments with support minimization.
This commit is contained in:
Alan Mishchenko
parent
0de189f4db
commit
1faab72a6c
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@ -4807,6 +4807,10 @@ SOURCE=.\src\aig\gia\giaSupMin.c
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# End Source File
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# Begin Source File
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SOURCE=.\src\aig\gia\giaSupp.c
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# End Source File
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# Begin Source File
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SOURCE=.\src\aig\gia\giaSweep.c
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# End Source File
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# Begin Source File
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@ -577,6 +577,7 @@ static inline int Gia_ObjIsTravIdCurrent( Gia_Man_t * p, Gia_Obj_t * pO
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static inline int Gia_ObjIsTravIdPrevious( Gia_Man_t * p, Gia_Obj_t * pObj ) { assert( Gia_ObjId(p, pObj) < p->nTravIdsAlloc ); return (p->pTravIds[Gia_ObjId(p, pObj)] == p->nTravIds - 1); }
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static inline void Gia_ObjSetTravIdCurrentId( Gia_Man_t * p, int Id ) { assert( Id < p->nTravIdsAlloc ); p->pTravIds[Id] = p->nTravIds; }
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static inline int Gia_ObjIsTravIdCurrentId( Gia_Man_t * p, int Id ) { assert( Id < p->nTravIdsAlloc ); return (p->pTravIds[Id] == p->nTravIds); }
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static inline int Gia_ObjIsTravIdPreviousId( Gia_Man_t * p, int Id ) { assert( Id < p->nTravIdsAlloc ); return (p->pTravIds[Id] == p->nTravIds - 1); }
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static inline void Gia_ManTimeClean( Gia_Man_t * p ) { int i; assert( p->vTiming != NULL ); Vec_FltFill(p->vTiming, 3*Gia_ManObjNum(p), 0); for ( i = 0; i < Gia_ManObjNum(p); i++ ) Vec_FltWriteEntry( p->vTiming, 3*i+1, (float)(ABC_INFINITY) ); }
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static inline void Gia_ManTimeStart( Gia_Man_t * p ) { assert( p->vTiming == NULL ); p->vTiming = Vec_FltAlloc(0); Gia_ManTimeClean( p ); }
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@ -1464,6 +1465,11 @@ extern int Gia_ManComputeOneWin( Gia_Man_t * p, int iPivot, Vec_
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/*=== giaStg.c ============================================================*/
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extern void Gia_ManStgPrint( FILE * pFile, Vec_Int_t * vLines, int nIns, int nOuts, int nStates );
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extern Gia_Man_t * Gia_ManStgRead( char * pFileName, int kHot, int fVerbose );
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/*=== giaSupp.c ============================================================*/
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typedef struct Gia_ManMin_t_ Gia_ManMin_t;
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extern Gia_ManMin_t * Gia_ManSuppStart( Gia_Man_t * pGia );
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extern void Gia_ManSuppStop( Gia_ManMin_t * p );
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extern int Gia_ManSupportAnd( Gia_ManMin_t * p, int iLit0, int iLit1 );
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/*=== giaSweep.c ============================================================*/
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extern Gia_Man_t * Gia_ManFraigSweepSimple( Gia_Man_t * p, void * pPars );
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extern Gia_Man_t * Gia_ManSweepWithBoxes( Gia_Man_t * p, void * pParsC, void * pParsS, int fConst, int fEquiv, int fVerbose, int fVerbEquivs );
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@ -0,0 +1,338 @@
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/**CFile****************************************************************
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FileName [giaSupp.c]
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SystemName [ABC: Logic synthesis and verification system.]
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PackageName [Scalable AIG package.]
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Synopsis [Support minimization for AIGs.]
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Author [Alan Mishchenko]
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Affiliation [UC Berkeley]
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Date [Ver. 1.0. Started - June 20, 2005.]
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Revision [$Id: giaSupp.c,v 1.00 2005/06/20 00:00:00 alanmi Exp $]
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***********************************************************************/
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#include "gia.h"
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#ifdef ABC_USE_CUDD
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#include "bdd/extrab/extraBdd.h"
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#endif
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ABC_NAMESPACE_IMPL_START
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////////////////////////////////////////////////////////////////////////
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/// DECLARATIONS ///
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////////////////////////////////////////////////////////////////////////
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#ifdef ABC_USE_CUDD
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struct Gia_ManMin_t_
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{
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// problem formulation
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Gia_Man_t * pGia;
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int iLits[2];
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// structural information
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Vec_Int_t * vCis[2];
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Vec_Int_t * vObjs[2];
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Vec_Int_t * vCleared;
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// intermediate functions
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DdManager * dd;
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Vec_Ptr_t * vFuncs;
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Vec_Int_t * vSupp;
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};
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////////////////////////////////////////////////////////////////////////
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/// FUNCTION DEFINITIONS ///
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////////////////////////////////////////////////////////////////////////
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/**Function*************************************************************
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Synopsis [Create/delete the data representation manager.]
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Description []
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SideEffects []
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SeeAlso []
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***********************************************************************/
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Gia_ManMin_t * Gia_ManSuppStart( Gia_Man_t * pGia )
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{
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Gia_ManMin_t * p;
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p = ABC_CALLOC( Gia_ManMin_t, 1 );
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p->pGia = pGia;
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p->vCis[0] = Vec_IntAlloc( 512 );
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p->vCis[1] = Vec_IntAlloc( 512 );
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p->vObjs[0] = Vec_IntAlloc( 512 );
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p->vObjs[1] = Vec_IntAlloc( 512 );
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p->vCleared = Vec_IntAlloc( 512 );
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p->dd = Cudd_Init( 0, 0, CUDD_UNIQUE_SLOTS, CUDD_CACHE_SLOTS, 0 );
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// Cudd_AutodynEnable( p->dd, CUDD_REORDER_SYMM_SIFT );
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Cudd_AutodynDisable( p->dd );
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p->vFuncs = Vec_PtrAlloc( 10000 );
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p->vSupp = Vec_IntAlloc( 10000 );
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return p;
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}
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void Gia_ManSuppStop( Gia_ManMin_t * p )
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{
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Vec_IntFreeP( &p->vCis[0] );
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Vec_IntFreeP( &p->vCis[1] );
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Vec_IntFreeP( &p->vObjs[0] );
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Vec_IntFreeP( &p->vObjs[1] );
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Vec_IntFreeP( &p->vCleared );
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Vec_PtrFreeP( &p->vFuncs );
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Vec_IntFreeP( &p->vSupp );
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printf( "Refs = %d. \n", Cudd_CheckZeroRef( p->dd ) );
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Cudd_Quit( p->dd );
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ABC_FREE( p );
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}
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/**Function*************************************************************
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Synopsis [Compute variables, which are not in the support.]
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Description []
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SideEffects []
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SeeAlso []
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***********************************************************************/
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int Gia_ManFindRemoved( Gia_ManMin_t * p )
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{
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extern void ddSupportStep2( DdNode * f, int * support );
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extern void ddClearFlag2( DdNode * f );
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//int fVerbose = 1;
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int nBddLimit = 100000;
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int nPart0 = Vec_IntSize(p->vCis[0]);
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int n, i, iObj, nVars = 0;
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DdNode * bFunc0, * bFunc1, * bFunc;
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Vec_PtrFillExtra( p->vFuncs, Gia_ManObjNum(p->pGia), NULL );
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// assign variables
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for ( n = 0; n < 2; n++ )
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Vec_IntForEachEntry( p->vCis[n], iObj, i )
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Vec_PtrWriteEntry( p->vFuncs, iObj, Cudd_bddIthVar(p->dd, nVars++) );
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// create nodes
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for ( n = 0; n < 2; n++ )
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Vec_IntForEachEntry( p->vObjs[n], iObj, i )
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{
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Gia_Obj_t * pObj = Gia_ManObj( p->pGia, iObj );
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bFunc0 = Cudd_NotCond( (DdNode *)Vec_PtrEntry(p->vFuncs, Gia_ObjFaninId0(pObj, iObj)), Gia_ObjFaninC0(pObj) );
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bFunc1 = Cudd_NotCond( (DdNode *)Vec_PtrEntry(p->vFuncs, Gia_ObjFaninId1(pObj, iObj)), Gia_ObjFaninC1(pObj) );
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bFunc = Cudd_bddAndLimit( p->dd, bFunc0, bFunc1, nBddLimit );
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assert( bFunc != NULL );
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Cudd_Ref( bFunc );
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Vec_PtrWriteEntry( p->vFuncs, iObj, bFunc );
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}
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// create new node
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bFunc0 = Cudd_NotCond( (DdNode *)Vec_PtrEntry(p->vFuncs, Abc_Lit2Var(p->iLits[0])), Abc_LitIsCompl(p->iLits[0]) );
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bFunc1 = Cudd_NotCond( (DdNode *)Vec_PtrEntry(p->vFuncs, Abc_Lit2Var(p->iLits[1])), Abc_LitIsCompl(p->iLits[1]) );
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bFunc = Cudd_bddAndLimit( p->dd, bFunc0, bFunc1, nBddLimit );
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assert( bFunc != NULL );
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Cudd_Ref( bFunc );
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//if ( fVerbose ) Extra_bddPrint( p->dd, bFunc ), printf( "\n" );
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// collect support
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Vec_IntFill( p->vSupp, nVars, 0 );
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ddSupportStep2( Cudd_Regular(bFunc), Vec_IntArray(p->vSupp) );
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ddClearFlag2( Cudd_Regular(bFunc) );
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// find variables not present in the support
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Vec_IntClear( p->vCleared );
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for ( i = 0; i < nVars; i++ )
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if ( Vec_IntEntry(p->vSupp, i) == 0 )
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Vec_IntPush( p->vCleared, i < nPart0 ? Vec_IntEntry(p->vCis[0], i) : Vec_IntEntry(p->vCis[1], i-nPart0) );
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//printf( "%d(%d)%d ", Cudd_SupportSize(p->dd, bFunc), Vec_IntSize(p->vCleared), Cudd_DagSize(bFunc) );
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// deref results
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Cudd_RecursiveDeref( p->dd, bFunc );
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for ( n = 0; n < 2; n++ )
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Vec_IntForEachEntry( p->vObjs[n], iObj, i )
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Cudd_RecursiveDeref( p->dd, (DdNode *)Vec_PtrEntry(p->vFuncs, iObj) );
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//Vec_IntPrint( p->vCleared );
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return Vec_IntSize(p->vCleared);
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}
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/**Function*************************************************************
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Synopsis [Compute variables, which are not in the support.]
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Description []
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SideEffects []
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SeeAlso []
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***********************************************************************/
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int Gia_ManRebuildOne( Gia_ManMin_t * p, int n )
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{
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int i, iObj, iGiaLitNew = -1;
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Vec_Int_t * vTempIns = p->vCis[n];
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Vec_Int_t * vTempNds = p->vObjs[n];
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Vec_Int_t * vCopies = &p->pGia->vCopies;
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Vec_IntFillExtra( vCopies, Gia_ManObjNum(p->pGia), -1 );
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assert( p->iLits[n] >= 2 );
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// process inputs
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Vec_IntForEachEntry( vTempIns, iObj, i )
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Vec_IntWriteEntry( vCopies, iObj, Abc_Var2Lit(iObj, 0) );
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// process constants
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assert( Vec_IntSize(p->vCleared) > 0 );
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Vec_IntForEachEntry( p->vCleared, iObj, i )
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Vec_IntWriteEntry( vCopies, iObj, 0 );
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if ( Vec_IntSize(vTempNds) == 0 )
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iGiaLitNew = Vec_IntEntry( vCopies, Abc_Lit2Var(p->iLits[n]) );
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else
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{
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Vec_IntForEachEntry( vTempNds, iObj, i )
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{
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Gia_Obj_t * pObj = Gia_ManObj( p->pGia, iObj );
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int iGiaLit0 = Vec_IntEntry( vCopies, Gia_ObjFaninId0p(p->pGia, pObj) );
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int iGiaLit1 = Vec_IntEntry( vCopies, Gia_ObjFaninId1p(p->pGia, pObj) );
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iGiaLit0 = Abc_LitNotCond( iGiaLit0, Gia_ObjFaninC0(pObj) );
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iGiaLit1 = Abc_LitNotCond( iGiaLit1, Gia_ObjFaninC1(pObj) );
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iGiaLitNew = Gia_ManHashAnd( p->pGia, iGiaLit0, iGiaLit1 );
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Vec_IntWriteEntry( vCopies, iObj, iGiaLitNew );
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}
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assert( Abc_Lit2Var(p->iLits[n]) == iObj );
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}
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return Abc_LitNotCond( iGiaLitNew, Abc_LitIsCompl(p->iLits[n]) );
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}
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/**Function*************************************************************
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Synopsis [Collect nodes.]
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Description []
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SideEffects []
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SeeAlso []
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***********************************************************************/
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static inline int Gia_ManGatherSupp_rec( Gia_Man_t * p, int iObj, Vec_Int_t * vCis, Vec_Int_t * vObjs )
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{
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int Val0, Val1;
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Gia_Obj_t * pObj;
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if ( Gia_ObjIsTravIdPreviousId(p, iObj) )
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return 1;
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if ( Gia_ObjIsTravIdCurrentId(p, iObj) )
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return 0;
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Gia_ObjSetTravIdCurrentId(p, iObj);
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pObj = Gia_ManObj( p, iObj );
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if ( Gia_ObjIsCi(pObj) )
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{
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Vec_IntPush( vCis, iObj );
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return 0;
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}
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assert( Gia_ObjIsAnd(pObj) );
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Val0 = Gia_ManGatherSupp_rec( p, Gia_ObjFaninId0(pObj, iObj), vCis, vObjs );
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Val1 = Gia_ManGatherSupp_rec( p, Gia_ObjFaninId1(pObj, iObj), vCis, vObjs );
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Vec_IntPush( vObjs, iObj );
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return Val0 || Val1;
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}
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int Gia_ManGatherSupp( Gia_ManMin_t * p )
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{
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int n, Overlap = 0;
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Gia_ManIncrementTravId( p->pGia );
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for ( n = 0; n < 2; n++ )
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{
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Vec_IntClear( p->vCis[n] );
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Vec_IntClear( p->vObjs[n] );
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Gia_ManIncrementTravId( p->pGia );
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Overlap = Gia_ManGatherSupp_rec( p->pGia, Abc_Lit2Var(p->iLits[n]), p->vCis[n], p->vObjs[n] );
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assert( n || !Overlap );
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}
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return Overlap;
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}
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/**Function*************************************************************
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Synopsis [Takes a literal and returns a support-minized literal.]
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Description []
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SideEffects []
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SeeAlso []
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***********************************************************************/
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int Gia_ManSupportAnd( Gia_ManMin_t * p, int iLit0, int iLit1 )
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{
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int iLitNew0, iLitNew1;
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p->iLits[0] = iLit0;
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p->iLits[1] = iLit1;
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if ( iLit0 < 2 || iLit1 < 2 || !Gia_ManGatherSupp(p) || !Gia_ManFindRemoved(p) )
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return Gia_ManHashAnd( p->pGia, iLit0, iLit1 );
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iLitNew0 = Gia_ManRebuildOne( p, 0 );
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iLitNew1 = Gia_ManRebuildOne( p, 1 );
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return Gia_ManHashAnd( p->pGia, iLitNew0, iLitNew1 );
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}
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#else
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Gia_ManMin_t * Gia_ManSuppStart( Gia_Man_t * pGia ) { return NULL; }
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int Gia_ManSupportAnd( Gia_ManMin_t * p, int iLit0, int iLit1 ) { return 0; }
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void Gia_ManSuppStop( Gia_ManMin_t * p ) {}
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#endif
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/**Function*************************************************************
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Synopsis [Testbench.]
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Description []
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SideEffects []
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SeeAlso []
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***********************************************************************/
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Gia_Man_t * Gia_ManSupportAndTest( Gia_Man_t * pGia )
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{
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Gia_ManMin_t * pMan;
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Gia_Man_t * pNew, * pTemp;
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Gia_Obj_t * pObj;
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int i;
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Gia_ManFillValue( pGia );
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pNew = Gia_ManStart( Gia_ManObjNum(pGia) );
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pNew->pName = Abc_UtilStrsav( pGia->pName );
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pNew->pSpec = Abc_UtilStrsav( pGia->pSpec );
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Gia_ManHashAlloc( pNew );
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Gia_ManConst0(pGia)->Value = 0;
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pMan = Gia_ManSuppStart( pNew );
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Gia_ManForEachObj1( pGia, pObj, i )
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{
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if ( Gia_ObjIsAnd(pObj) )
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{
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// pObj->Value = Gia_ManAppendAnd( pNew, Gia_ObjFanin0Copy(pObj), Gia_ObjFanin1Copy(pObj) );
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pObj->Value = Gia_ManSupportAnd( pMan, Gia_ObjFanin0Copy(pObj), Gia_ObjFanin1Copy(pObj) );
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}
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else if ( Gia_ObjIsCi(pObj) )
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pObj->Value = Gia_ManAppendCi( pNew );
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else if ( Gia_ObjIsCo(pObj) )
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pObj->Value = Gia_ManAppendCo( pNew, Gia_ObjFanin0Copy(pObj) );
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else assert( 0 );
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if ( i % 10000 == 0 )
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printf( "%d\n", i );
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}
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Gia_ManSuppStop( pMan );
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Gia_ManSetRegNum( pNew, Gia_ManRegNum(pGia) );
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pNew = Gia_ManCleanup( pTemp = pNew );
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Gia_ManStop( pTemp );
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return pNew;
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}
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////////////////////////////////////////////////////////////////////////
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/// END OF FILE ///
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////////////////////////////////////////////////////////////////////////
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ABC_NAMESPACE_IMPL_END
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@ -76,6 +76,7 @@ SRC += src/aig/gia/giaAig.c \
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src/aig/gia/giaStg.c \
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src/aig/gia/giaStr.c \
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src/aig/gia/giaSupMin.c \
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src/aig/gia/giaSupp.c \
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src/aig/gia/giaSweep.c \
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src/aig/gia/giaSweeper.c \
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src/aig/gia/giaSwitch.c \
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@ -58,8 +58,8 @@ static DdNode * cuddBddPermuteRecur ARGS( ( DdManager * manager, DdHashTable * t
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static DdNode * extraBddAndPermute( DdHashTable * table, DdManager * ddF, DdNode * bF, DdManager * ddG, DdNode * bG, int * pPermute );
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// file "cuddUtils.c"
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static void ddSupportStep(DdNode *f, int *support);
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static void ddClearFlag(DdNode *f);
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void ddSupportStep2(DdNode *f, int *support);
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void ddClearFlag2(DdNode *f);
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|
||||
static DdNode* extraZddPrimes( DdManager *dd, DdNode* F );
|
||||
|
||||
|
|
@ -547,8 +547,8 @@ Extra_SupportArray(
|
|||
support[i] = 0;
|
||||
|
||||
/* Compute support and clean up markers. */
|
||||
ddSupportStep(Cudd_Regular(f),support);
|
||||
ddClearFlag(Cudd_Regular(f));
|
||||
ddSupportStep2(Cudd_Regular(f),support);
|
||||
ddClearFlag2(Cudd_Regular(f));
|
||||
|
||||
return(support);
|
||||
|
||||
|
|
@ -584,9 +584,9 @@ Extra_VectorSupportArray(
|
|||
|
||||
/* Compute support and clean up markers. */
|
||||
for ( i = 0; i < n; i++ )
|
||||
ddSupportStep( Cudd_Regular(F[i]), support );
|
||||
ddSupportStep2( Cudd_Regular(F[i]), support );
|
||||
for ( i = 0; i < n; i++ )
|
||||
ddClearFlag( Cudd_Regular(F[i]) );
|
||||
ddClearFlag2( Cudd_Regular(F[i]) );
|
||||
|
||||
return support;
|
||||
}
|
||||
|
|
@ -782,8 +782,8 @@ DdNode * Extra_bddSupportNegativeCube( DdManager * dd, DdNode * f )
|
|||
}
|
||||
|
||||
/* Compute support and clean up markers. */
|
||||
ddSupportStep( Cudd_Regular( f ), support );
|
||||
ddClearFlag( Cudd_Regular( f ) );
|
||||
ddSupportStep2( Cudd_Regular( f ), support );
|
||||
ddClearFlag2( Cudd_Regular( f ) );
|
||||
|
||||
/* Transform support from array to cube. */
|
||||
do
|
||||
|
|
@ -1689,8 +1689,8 @@ extraTransferPermuteRecur(
|
|||
SeeAlso [ddClearFlag]
|
||||
|
||||
******************************************************************************/
|
||||
static void
|
||||
ddSupportStep(
|
||||
void
|
||||
ddSupportStep2(
|
||||
DdNode * f,
|
||||
int * support)
|
||||
{
|
||||
|
|
@ -1699,8 +1699,8 @@ ddSupportStep(
|
|||
}
|
||||
|
||||
support[f->index] = 1;
|
||||
ddSupportStep(cuddT(f),support);
|
||||
ddSupportStep(Cudd_Regular(cuddE(f)),support);
|
||||
ddSupportStep2(cuddT(f),support);
|
||||
ddSupportStep2(Cudd_Regular(cuddE(f)),support);
|
||||
/* Mark as visited. */
|
||||
f->next = Cudd_Not(f->next);
|
||||
return;
|
||||
|
|
@ -1720,8 +1720,8 @@ ddSupportStep(
|
|||
SeeAlso [ddSupportStep ddDagInt]
|
||||
|
||||
******************************************************************************/
|
||||
static void
|
||||
ddClearFlag(
|
||||
void
|
||||
ddClearFlag2(
|
||||
DdNode * f)
|
||||
{
|
||||
if (!Cudd_IsComplement(f->next)) {
|
||||
|
|
@ -1732,8 +1732,8 @@ ddClearFlag(
|
|||
if (cuddIsConstant(f)) {
|
||||
return;
|
||||
}
|
||||
ddClearFlag(cuddT(f));
|
||||
ddClearFlag(Cudd_Regular(cuddE(f)));
|
||||
ddClearFlag2(cuddT(f));
|
||||
ddClearFlag2(Cudd_Regular(cuddE(f)));
|
||||
return;
|
||||
|
||||
} /* end of ddClearFlag */
|
||||
|
|
|
|||
|
|
@ -159,8 +159,8 @@ Iter 12 -> 3674160 Time = 70.48 sec
|
|||
SeeAlso []
|
||||
|
||||
***********************************************************************/
|
||||
static inline int Abc_DataHasBit( word * p, word i ) { return (p[(i)>>6] & (1<<((i) & 63))) > 0; }
|
||||
static inline void Abc_DataXorBit( word * p, word i ) { p[(i)>>6] ^= (1<<((i) & 63)); }
|
||||
static inline int Abc_DataHasBit( word * p, word i ) { return (p[(i)>>6] & (((word)1)<<((i) & 63))) > 0; }
|
||||
static inline void Abc_DataXorBit( word * p, word i ) { p[(i)>>6] ^= (((word)1)<<((i) & 63)); }
|
||||
static inline int Abc_DataGetCube( word w, int i ) { return (w >> (5*i)) & 31; }
|
||||
static inline word Abc_DataXorCube( word w, int i, int c ) { return w ^ (((word)c) << (5*i)); }
|
||||
static inline word Abc_CubeGenerateSign( char * pState )
|
||||
|
|
|
|||
|
|
@ -298,8 +298,8 @@ void Abc_EnumPrint( Vec_Int_t * vGates, int i, int nVars )
|
|||
SeeAlso []
|
||||
|
||||
***********************************************************************/
|
||||
static inline int Abc_DataHasBit( word * p, word i ) { return (p[(i)>>6] & (1<<((i) & 63))) > 0; }
|
||||
static inline void Abc_DataXorBit( word * p, word i ) { p[(i)>>6] ^= (1<<((i) & 63)); }
|
||||
static inline int Abc_DataHasBit( word * p, word i ) { return (p[(i)>>6] & (((word)1)<<((i) & 63))) > 0; }
|
||||
static inline void Abc_DataXorBit( word * p, word i ) { p[(i)>>6] ^= (((word)1)<<((i) & 63)); }
|
||||
|
||||
/**Function*************************************************************
|
||||
|
||||
|
|
|
|||
Loading…
Reference in New Issue