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-rw-r--r--src/aig/gia/giaIso2.c703
1 files changed, 703 insertions, 0 deletions
diff --git a/src/aig/gia/giaIso2.c b/src/aig/gia/giaIso2.c
new file mode 100644
index 00000000..520af61d
--- /dev/null
+++ b/src/aig/gia/giaIso2.c
@@ -0,0 +1,703 @@
+/**CFile****************************************************************
+
+ FileName [gia.c]
+
+ SystemName [ABC: Logic synthesis and verification system.]
+
+ PackageName [Scalable AIG package.]
+
+ Synopsis []
+
+ Author [Alan Mishchenko]
+
+ Affiliation [UC Berkeley]
+
+ Date [Ver. 1.0. Started - June 20, 2005.]
+
+ Revision [$Id: gia.c,v 1.00 2005/06/20 00:00:00 alanmi Exp $]
+
+***********************************************************************/
+
+#include "gia.h"
+#include "misc/vec/vecHsh.h"
+#include "misc/vec/vecWec.h"
+
+
+ABC_NAMESPACE_IMPL_START
+
+
+#define ISO_MASK 0xFF
+static int s_256Primes[ISO_MASK+1] =
+{
+ 0x984b6ad9,0x18a6eed3,0x950353e2,0x6222f6eb,0xdfbedd47,0xef0f9023,0xac932a26,0x590eaf55,
+ 0x97d0a034,0xdc36cd2e,0x22736b37,0xdc9066b0,0x2eb2f98b,0x5d9c7baf,0x85747c9e,0x8aca1055,
+ 0x50d66b74,0x2f01ae9e,0xa1a80123,0x3e1ce2dc,0xebedbc57,0x4e68bc34,0x855ee0cf,0x17275120,
+ 0x2ae7f2df,0xf71039eb,0x7c283eec,0x70cd1137,0x7cf651f3,0xa87bfa7a,0x14d87f02,0xe82e197d,
+ 0x8d8a5ebe,0x1e6a15dc,0x197d49db,0x5bab9c89,0x4b55dea7,0x55dede49,0x9a6a8080,0xe5e51035,
+ 0xe148d658,0x8a17eb3b,0xe22e4b38,0xe5be2a9a,0xbe938cbb,0x3b981069,0x7f9c0c8e,0xf756df10,
+ 0x8fa783f7,0x252062ce,0x3dc46b4b,0xf70f6432,0x3f378276,0x44b137a1,0x2bf74b77,0x04892ed6,
+ 0xfd318de1,0xd58c235e,0x94c6d25b,0x7aa5f218,0x35c9e921,0x5732fbbb,0x06026481,0xf584a44f,
+ 0x946e1b5f,0x8463d5b2,0x4ebca7b2,0x54887b15,0x08d1e804,0x5b22067d,0x794580f6,0xb351ea43,
+ 0xbce555b9,0x19ae2194,0xd32f1396,0x6fc1a7f1,0x1fd8a867,0x3a89fdb0,0xea49c61c,0x25f8a879,
+ 0xde1e6437,0x7c74afca,0x8ba63e50,0xb1572074,0xe4655092,0xdb6f8b1c,0xc2955f3c,0x327f85ba,
+ 0x60a17021,0x95bd261d,0xdea94f28,0x04528b65,0xbe0109cc,0x26dd5688,0x6ab2729d,0xc4f029ce,
+ 0xacf7a0be,0x4c912f55,0x34c06e65,0x4fbb938e,0x1533fb5f,0x03da06bd,0x48262889,0xc2523d7d,
+ 0x28a71d57,0x89f9713a,0xf574c551,0x7a99deb5,0x52834d91,0x5a6f4484,0xc67ba946,0x13ae698f,
+ 0x3e390f34,0x34fc9593,0x894c7932,0x6cf414a3,0xdb7928ab,0x13a3b8a3,0x4b381c1d,0xa10b54cb,
+ 0x55359d9d,0x35a3422a,0x58d1b551,0x0fd4de20,0x199eb3f4,0x167e09e2,0x3ee6a956,0x5371a7fa,
+ 0xd424efda,0x74f521c5,0xcb899ff6,0x4a42e4f4,0x747917b6,0x4b08df0b,0x090c7a39,0x11e909e4,
+ 0x258e2e32,0xd9fad92d,0x48fe5f69,0x0545cde6,0x55937b37,0x9b4ae4e4,0x1332b40e,0xc3792351,
+ 0xaff982ef,0x4dba132a,0x38b81ef1,0x28e641bf,0x227208c1,0xec4bbe37,0xc4e1821c,0x512c9d09,
+ 0xdaef1257,0xb63e7784,0x043e04d7,0x9c2cea47,0x45a0e59a,0x281315ca,0x849f0aac,0xa4071ed3,
+ 0x0ef707b3,0xfe8dac02,0x12173864,0x471f6d46,0x24a53c0a,0x35ab9265,0xbbf77406,0xa2144e79,
+ 0xb39a884a,0x0baf5b6d,0xcccee3dd,0x12c77584,0x2907325b,0xfd1adcd2,0xd16ee972,0x345ad6c1,
+ 0x315ebe66,0xc7ad2b8d,0x99e82c8d,0xe52da8c8,0xba50f1d3,0x66689cd8,0x2e8e9138,0x43e15e74,
+ 0xf1ced14d,0x188ec52a,0xe0ef3cbb,0xa958aedc,0x4107a1bc,0x5a9e7a3e,0x3bde939f,0xb5b28d5a,
+ 0x596fe848,0xe85ad00c,0x0b6b3aae,0x44503086,0x25b5695c,0xc0c31dcd,0x5ee617f0,0x74d40c3a,
+ 0xd2cb2b9f,0x1e19f5fa,0x81e24faf,0xa01ed68f,0xcee172fc,0x7fdf2e4d,0x002f4774,0x664f82dd,
+ 0xc569c39a,0xa2d4dcbe,0xaadea306,0xa4c947bf,0xa413e4e3,0x81fb5486,0x8a404970,0x752c980c,
+ 0x98d1d881,0x5c932c1e,0xeee65dfb,0x37592cdd,0x0fd4e65b,0xad1d383f,0x62a1452f,0x8872f68d,
+ 0xb58c919b,0x345c8ee3,0xb583a6d6,0x43d72cb3,0x77aaa0aa,0xeb508242,0xf2db64f8,0x86294328,
+ 0x82211731,0x1239a9d5,0x673ba5de,0xaf4af007,0x44203b19,0x2399d955,0xa175cd12,0x595928a7,
+ 0x6918928b,0xde3126bb,0x6c99835c,0x63ba1fa2,0xdebbdff0,0x3d02e541,0xd6f7aac6,0xe80b4cd0,
+ 0xd0fa29f1,0x804cac5e,0x2c226798,0x462f624c,0xad05b377,0x22924fcd,0xfbea205c,0x1b47586d
+};
+
+static int s_PrimeC = 49;
+//static int s_PrimeC = 1;
+
+////////////////////////////////////////////////////////////////////////
+/// DECLARATIONS ///
+////////////////////////////////////////////////////////////////////////
+
+typedef struct Gia_Iso2Man_t_ Gia_Iso2Man_t;
+struct Gia_Iso2Man_t_
+{
+ Gia_Man_t * pGia;
+ int nObjs;
+ int nUniques;
+ // internal data
+ Vec_Int_t * vUniques; // unique numbers
+ Vec_Int_t * vTied; // tied objects
+ Vec_Int_t * vTable; // hash table
+ Vec_Int_t * vPlaces; // used places in the table
+ Vec_Ptr_t * vSingles; // singleton objects
+ // isomorphism check
+ Vec_Int_t * vVec0; // isomorphism map
+ Vec_Int_t * vVec1; // isomorphism map
+ Vec_Int_t * vMap0; // isomorphism map
+ Vec_Int_t * vMap1; // isomorphism map
+ // statistics
+ int nIters;
+ clock_t timeStart;
+ clock_t timeSim;
+ clock_t timeRefine;
+ clock_t timeSort;
+ clock_t timeOther;
+ clock_t timeTotal;
+};
+
+////////////////////////////////////////////////////////////////////////
+/// FUNCTION DEFINITIONS ///
+////////////////////////////////////////////////////////////////////////
+
+/**Function*************************************************************
+
+ Synopsis []
+
+ Description []
+
+ SideEffects []
+
+ SeeAlso []
+
+***********************************************************************/
+Vec_Int_t * Gia_Iso2ManCollectTies( Gia_Man_t * p )
+{
+ Vec_Int_t * vTies;
+ Gia_Obj_t * pObj;
+ int i;
+ vTies = Vec_IntAlloc( Gia_ManCandNum(p) );
+ Gia_ManForEachCand( p, pObj, i )
+ Vec_IntPush( vTies, i );
+ return vTies;
+}
+void Gia_Iso2ManPrepare( Gia_Man_t * p )
+{
+ Gia_Obj_t * pObj;
+ int i;
+ Gia_ManForEachObj( p, pObj, i )
+ pObj->Value = Gia_ObjIsAnd(pObj) ? 1 + Abc_MaxInt(Gia_ObjFanin0(pObj)->Value, Gia_ObjFanin1(pObj)->Value) : 0;
+ Gia_ManConst0(p)->Value = s_256Primes[ISO_MASK];
+ Gia_ManForEachObj1( p, pObj, i )
+ if ( Gia_ObjIsAnd(pObj) )
+ pObj->Value = s_256Primes[pObj->Value & ISO_MASK] + s_256Primes[ISO_MASK - 10 + Gia_ObjFaninC0(pObj) + Gia_ObjFaninC1(pObj)];
+ else if ( Gia_ObjIsPi(p, pObj) )
+ pObj->Value = s_256Primes[ISO_MASK-1];
+ else if ( Gia_ObjIsRo(p, pObj) )
+ pObj->Value = s_256Primes[ISO_MASK-2];
+}
+void Gia_Iso2ManPropagate( Gia_Man_t * p )
+{
+ Gia_Obj_t * pObj, * pObjRo;
+ int i;
+ Gia_ManForEachObj1( p, pObj, i )
+ if ( Gia_ObjIsAnd(pObj) )
+ {
+ pObj->Value += (Gia_ObjFaninC0(pObj) + s_PrimeC) * Gia_ObjFanin0(pObj)->Value + (Gia_ObjFaninC1(pObj) + s_PrimeC) * Gia_ObjFanin1(pObj)->Value;
+ if ( Gia_ObjFaninC0(pObj) == Gia_ObjFaninC1(pObj) && Gia_ObjFanin0(pObj)->Value == Gia_ObjFanin1(pObj)->Value )
+ pObj->Value += s_256Primes[ISO_MASK - 11];
+ }
+ else if ( Gia_ObjIsCo(pObj) )
+ pObj->Value += (Gia_ObjFaninC0(pObj) + s_PrimeC) * Gia_ObjFanin0(pObj)->Value;
+ Gia_ManForEachRiRo( p, pObj, pObjRo, i )
+ {
+ pObjRo->Value += pObj->Value;
+ if ( pObjRo == Gia_ObjFanin0(pObj) )
+ pObjRo->Value += s_256Primes[ISO_MASK - 12];
+ }
+}
+
+/**Function*************************************************************
+
+ Synopsis []
+
+ Description []
+
+ SideEffects []
+
+ SeeAlso []
+
+***********************************************************************/
+unsigned Gia_Iso2ManCone_rec( Gia_Man_t * p, int Id, int Level )
+{
+ Gia_Obj_t * pObj;
+ if ( Level == 0 )
+ return 0;
+ if ( Gia_ObjIsTravIdCurrentId(p, Id) )
+ return 0;
+ Gia_ObjSetTravIdCurrentId(p, Id);
+ pObj = Gia_ManObj( p, Id );
+ if ( Gia_ObjIsAnd(pObj) )
+ return pObj->Value + Gia_Iso2ManCone_rec( p, Gia_ObjFaninId0(pObj, Id), Level-1 ) + Gia_Iso2ManCone_rec( p, Gia_ObjFaninId1(pObj, Id), Level-1 );
+ if ( Gia_ObjIsPi(p, pObj) )
+ return pObj->Value;
+ if ( Gia_ObjIsRo(p, pObj) )
+ return pObj->Value + Gia_Iso2ManCone_rec( p, Gia_ObjId(p, Gia_ObjFanin0(Gia_ObjRoToRi(p, pObj))), Level );
+ assert( Gia_ObjIsConst0(pObj) );
+ return pObj->Value;
+}
+unsigned Gia_Iso2ManCone( Gia_Man_t * p, int Id, int Level )
+{
+ Gia_ManIncrementTravId( p );
+ return Gia_Iso2ManCone_rec( p, Id, Level );
+}
+void Gia_Iso2ManUpdate( Gia_Iso2Man_t * p, int Level )
+{
+ Gia_Obj_t * pObj;
+ int i;
+ Gia_ManForEachObjVec( p->vTied, p->pGia, pObj, i )
+ pObj->Value += Gia_Iso2ManCone( p->pGia, Gia_ObjId(p->pGia, pObj), Level );
+}
+
+/**Function*************************************************************
+
+ Synopsis []
+
+ Description []
+
+ SideEffects []
+
+ SeeAlso []
+
+***********************************************************************/
+Gia_Iso2Man_t * Gia_Iso2ManStart( Gia_Man_t * pGia )
+{
+ Gia_Iso2Man_t * p;
+ p = ABC_CALLOC( Gia_Iso2Man_t, 1 );
+ p->pGia = pGia;
+ p->nObjs = Gia_ManObjNum( pGia );
+ p->nUniques = 0;
+ // internal data
+ p->vUniques = Vec_IntStartFull( p->nObjs );
+ p->vTied = Gia_Iso2ManCollectTies( pGia );
+ p->vTable = Vec_IntStart( Abc_PrimeCudd(1*p->nObjs) );
+ p->vPlaces = Vec_IntAlloc( 1000 );
+ p->vSingles = Vec_PtrAlloc( 1000 );
+ p->vVec0 = Vec_IntAlloc( 10000 );
+ p->vVec1 = Vec_IntAlloc( 10000 );
+ p->vMap0 = Vec_IntStart( p->nObjs );
+ p->vMap1 = Vec_IntStart( p->nObjs );
+ // add constant 0 object
+ Vec_IntWriteEntry( p->vUniques, 0, p->nUniques++ );
+ return p;
+}
+void Gia_Iso2ManStop( Gia_Iso2Man_t * p )
+{
+ Vec_IntFree( p->vUniques );
+ Vec_IntFree( p->vTied );
+ Vec_IntFree( p->vTable );
+ Vec_IntFree( p->vPlaces );
+ Vec_PtrFree( p->vSingles );
+ Vec_IntFree( p->vMap0 );
+ Vec_IntFree( p->vMap1 );
+ Vec_IntFree( p->vVec0 );
+ Vec_IntFree( p->vVec1 );
+ ABC_FREE( p );
+}
+void Gia_Iso2ManPrint( Gia_Iso2Man_t * p, clock_t Time, int fVerbose )
+{
+ if ( !fVerbose )
+ return;
+ printf( "Iter %4d : ", p->nIters++ );
+ printf( "Entries =%8d. ", Vec_IntSize(p->vTied) );
+ printf( "Uniques =%8d. ", p->nUniques );
+ printf( "Singles =%8d. ", Vec_PtrSize(p->vSingles) );
+ printf( "%9.2f sec", (float)(Time)/(float)(CLOCKS_PER_SEC) );
+ printf( "\n" );
+ fflush( stdout );
+}
+
+/**Function*************************************************************
+
+ Synopsis [Uniqifies objects using their signature.]
+
+ Description [Assumes the tied objects are in p->vTied. Assumes that
+ updated signature (pObj->Value) is assigned to these objects. Returns
+ the array of unique objects p->vSingles sorted by signature. Compacts
+ the array of tied objects p->vTied.]
+
+ SideEffects []
+
+ SeeAlso []
+
+***********************************************************************/
+int Gia_ObjCompareByValue2( Gia_Obj_t ** pp1, Gia_Obj_t ** pp2 ) { return (int)(*pp1)->Value - (int)(*pp2)->Value; }
+int Gia_Iso2ManUniqify( Gia_Iso2Man_t * p )
+{
+ int fVerify = 0;
+ Gia_Obj_t * pObj, * pTemp;
+ int * pTable = Vec_IntArray(p->vTable);
+ int i, k, nSize = Vec_IntSize(p->vTable);
+
+ if ( fVerify )
+ for ( k = 0; k < nSize; k++ )
+ assert( pTable[k] == 0 );
+ if ( fVerify )
+ Gia_ManForEachObjVec( p->vTied, p->pGia, pObj, i )
+ assert( pObj->fMark0 == 0 );
+
+#if 0
+ Gia_ManForEachObjVec( p->vTied, p->pGia, pObj, i )
+ {
+ printf( "%3d : ", Gia_ObjId(p->pGia, pObj) );
+// Extra_PrintBinary( stdout, &pObj->Value, 32 );
+ printf( "\n" );
+ }
+#endif
+
+ // add objects to the table
+ Vec_IntClear( p->vPlaces );
+ Gia_ManForEachObjVec( p->vTied, p->pGia, pObj, i )
+ {
+ int iObjId = Gia_ObjId(p->pGia, pObj);
+ for ( k = pObj->Value % nSize; pTemp = pTable[k] ? Gia_ManObj(p->pGia, pTable[k]) : NULL; k = (k + 1) % nSize )
+ if ( pTemp->Value == pObj->Value )
+ {
+ pTemp->fMark0 = 1;
+ pObj->fMark0 = 1;
+ break;
+ }
+ if ( pTemp != NULL )
+ continue;
+ pTable[k] = Gia_ObjId(p->pGia, pObj);
+ Vec_IntPush( p->vPlaces, k );
+ }
+ // clean the table
+ Vec_IntForEachEntry( p->vPlaces, k, i )
+ pTable[k] = 0;
+ // collect singleton objects and compact tied objects
+ k = 0;
+ Vec_PtrClear( p->vSingles );
+ Gia_ManForEachObjVec( p->vTied, p->pGia, pObj, i )
+ if ( pObj->fMark0 == 0 )
+ Vec_PtrPush( p->vSingles, pObj );
+ else
+ {
+ pObj->fMark0 = 0;
+ Vec_IntWriteEntry( p->vTied, k++, Gia_ObjId(p->pGia, pObj) );
+ }
+ Vec_IntShrink( p->vTied, k );
+ // sort singletons
+ Vec_PtrSort( p->vSingles, (int (*)(void))Gia_ObjCompareByValue2 );
+ // add them to unique and increment signature
+ Vec_PtrForEachEntry( Gia_Obj_t *, p->vSingles, pObj, i )
+ {
+ pObj->Value += s_256Primes[p->nUniques & ISO_MASK];
+ assert( Vec_IntEntry(p->vUniques, Gia_ObjId(p->pGia, pObj)) == -1 );
+ Vec_IntWriteEntry( p->vUniques, Gia_ObjId(p->pGia, pObj), p->nUniques++ );
+ }
+ return Vec_PtrSize( p->vSingles );
+}
+
+/**Function*************************************************************
+
+ Synopsis []
+
+ Description []
+
+ SideEffects []
+
+ SeeAlso []
+
+***********************************************************************/
+Vec_Wec_t * Gia_Iso2ManDerivePoClasses( Gia_Man_t * pGia )
+{
+ Vec_Wec_t * vEquivs;
+ Vec_Int_t * vValues;
+ Vec_Int_t * vMap;
+ Gia_Obj_t * pObj;
+ int i;
+ vValues = Vec_IntAlloc( Gia_ManPoNum(pGia) );
+ Gia_ManForEachPo( pGia, pObj, i )
+ Vec_IntPush( vValues, pObj->Value );
+ vMap = Hsh_IntManHashArray( vValues, 1 );
+ Vec_IntFree( vValues );
+ vEquivs = Vec_WecCreateClasses( vMap );
+ Vec_IntFree( vMap );
+ return vEquivs;
+}
+
+/**Function*************************************************************
+
+ Synopsis []
+
+ Description []
+
+ SideEffects []
+
+ SeeAlso []
+
+***********************************************************************/
+void Gia_Iso2ManCollectOrder2_rec( Gia_Man_t * p, int Id, Vec_Int_t * vVec )
+{
+ Gia_Obj_t * pObj;
+ if ( Gia_ObjIsTravIdCurrentId(p, Id) )
+ return;
+ Gia_ObjSetTravIdCurrentId(p, Id);
+ pObj = Gia_ManObj( p, Id );
+ if ( Gia_ObjIsAnd(pObj) )
+ {
+ if ( Gia_ObjFanin0(pObj)->Value <= Gia_ObjFanin1(pObj)->Value )
+ {
+ Gia_Iso2ManCollectOrder2_rec( p, Gia_ObjFaninId0(pObj, Id), vVec );
+ Gia_Iso2ManCollectOrder2_rec( p, Gia_ObjFaninId1(pObj, Id), vVec );
+ }
+ else
+ {
+ Gia_Iso2ManCollectOrder2_rec( p, Gia_ObjFaninId1(pObj, Id), vVec );
+ Gia_Iso2ManCollectOrder2_rec( p, Gia_ObjFaninId0(pObj, Id), vVec );
+ }
+ }
+ else if ( Gia_ObjIsCo(pObj) )
+ {
+ Gia_Iso2ManCollectOrder2_rec( p, Gia_ObjFaninId0(pObj, Id), vVec );
+ }
+ else if ( Gia_ObjIsPi(p, pObj) )
+ {
+ }
+ else assert( Gia_ObjIsConst0(pObj) );
+ Vec_IntPush( vVec, Id );
+}
+Vec_Int_t * Gia_Iso2ManCollectOrder2( Gia_Man_t * pGia, int * pPos, int nPos )
+{
+ Vec_Int_t * vVec;
+ int i;
+ vVec = Vec_IntAlloc( 1000 );
+ Gia_ManIncrementTravId( pGia );
+ for ( i = 0; i < nPos; i++ )
+ Gia_Iso2ManCollectOrder2_rec( pGia, Gia_ObjId(pGia, Gia_ManPo(pGia, pPos[i])), vVec );
+ return vVec;
+}
+
+/**Function*************************************************************
+
+ Synopsis []
+
+ Description []
+
+ SideEffects []
+
+ SeeAlso []
+
+***********************************************************************/
+void Gia_Iso2ManCollectOrder_rec( Gia_Man_t * p, int Id, Vec_Int_t * vRoots, Vec_Int_t * vVec, Vec_Int_t * vMap )
+{
+ Gia_Obj_t * pObj;
+ if ( Gia_ObjIsTravIdCurrentId(p, Id) )
+ return;
+ Gia_ObjSetTravIdCurrentId(p, Id);
+ pObj = Gia_ManObj( p, Id );
+ if ( Gia_ObjIsAnd(pObj) )
+ {
+ if ( Gia_ObjFanin0(pObj)->Value <= Gia_ObjFanin1(pObj)->Value )
+ {
+ Gia_Iso2ManCollectOrder_rec( p, Gia_ObjFaninId0(pObj, Id), vRoots, vVec, vMap );
+ Gia_Iso2ManCollectOrder_rec( p, Gia_ObjFaninId1(pObj, Id), vRoots, vVec, vMap );
+ }
+ else
+ {
+ Gia_Iso2ManCollectOrder_rec( p, Gia_ObjFaninId1(pObj, Id), vRoots, vVec, vMap );
+ Gia_Iso2ManCollectOrder_rec( p, Gia_ObjFaninId0(pObj, Id), vRoots, vVec, vMap );
+ }
+ }
+ else if ( Gia_ObjIsCo(pObj) )
+ {
+ Gia_Iso2ManCollectOrder_rec( p, Gia_ObjFaninId0(pObj, Id), vRoots, vVec, vMap );
+ }
+ else if ( Gia_ObjIsCi(pObj) )
+ {
+ if ( Gia_ObjIsRo(p, pObj) )
+ Vec_IntPush( vRoots, Gia_ObjId(p, Gia_ObjRoToRi(p, pObj)) );
+ }
+ else assert( Gia_ObjIsConst0(pObj) );
+ Vec_IntWriteEntry( vMap, Id, Vec_IntSize(vVec) );
+ Vec_IntPush( vVec, Id );
+}
+void Gia_Iso2ManCollectOrder( Gia_Man_t * pGia, int * pPos, int nPos, Vec_Int_t * vRoots, Vec_Int_t * vVec, Vec_Int_t * vMap )
+{
+ int i, iRoot;
+ Vec_IntClear( vRoots );
+ for ( i = 0; i < nPos; i++ )
+ Vec_IntPush( vRoots, Gia_ObjId(pGia, Gia_ManPo(pGia, pPos[i])) );
+ Vec_IntClear( vVec );
+ Gia_ManIncrementTravId( pGia );
+ Vec_IntForEachEntry( vRoots, iRoot, i )
+ Gia_Iso2ManCollectOrder_rec( pGia, iRoot, vRoots, vVec, vMap );
+}
+
+/**Function*************************************************************
+
+ Synopsis []
+
+ Description []
+
+ SideEffects []
+
+ SeeAlso []
+
+***********************************************************************/
+int Gia_Iso2ManCheckIsoClass( Gia_Man_t * p, Vec_Int_t * vClass, Vec_Int_t * vRoots, Vec_Int_t * vVec0, Vec_Int_t * vVec1, Vec_Int_t * vMap0, Vec_Int_t * vMap1 )
+{
+ Gia_Obj_t * pObj0, * pObj1;
+ int i, k, iObj0, iObj1, iPo;
+ assert( Vec_IntSize(vClass) > 1 );
+ iPo = Vec_IntEntry( vClass, 0 );
+ Gia_Iso2ManCollectOrder( p, &iPo, 1, vRoots, vVec0, vMap0 );
+ Vec_IntForEachEntryStart( vClass, iPo, i, 1 )
+ {
+ Gia_Iso2ManCollectOrder( p, &iPo, 1, vRoots, vVec1, vMap1 );
+ if ( Vec_IntSize(vVec0) != Vec_IntSize(vVec1) )
+ continue;
+ Vec_IntForEachEntryTwo( vVec0, vVec1, iObj0, iObj1, k )
+ {
+ if ( iObj0 == iObj1 )
+ continue;
+ pObj0 = Gia_ManObj(p, iObj0);
+ pObj1 = Gia_ManObj(p, iObj1);
+ if ( pObj0->Value != pObj1->Value )
+ return 0;
+ assert( pObj0->Value == pObj1->Value );
+ if ( !Gia_ObjIsAnd(pObj0) )
+ continue;
+ if ( Gia_ObjFanin0(pObj0)->Value <= Gia_ObjFanin1(pObj0)->Value )
+ {
+ if ( Gia_ObjFanin0(pObj1)->Value <= Gia_ObjFanin1(pObj1)->Value )
+ {
+ if ( Gia_ObjFaninC0(pObj0) != Gia_ObjFaninC0(pObj1) || Gia_ObjFaninC1(pObj0) != Gia_ObjFaninC1(pObj1) ||
+ Vec_IntEntry(vMap0, Gia_ObjFaninId0p(p, pObj0)) != Vec_IntEntry( vMap1, Gia_ObjFaninId0p(p, pObj1)) ||
+ Vec_IntEntry(vMap0, Gia_ObjFaninId1p(p, pObj0)) != Vec_IntEntry( vMap1, Gia_ObjFaninId1p(p, pObj1)) )
+ return 0;
+ }
+ else
+ {
+ if ( Gia_ObjFaninC0(pObj0) != Gia_ObjFaninC1(pObj1) || Gia_ObjFaninC1(pObj0) != Gia_ObjFaninC0(pObj1) ||
+ Vec_IntEntry(vMap0, Gia_ObjFaninId0p(p, pObj0)) != Vec_IntEntry( vMap1, Gia_ObjFaninId1p(p, pObj1)) ||
+ Vec_IntEntry(vMap0, Gia_ObjFaninId1p(p, pObj0)) != Vec_IntEntry( vMap1, Gia_ObjFaninId0p(p, pObj1)) )
+ return 0;
+ }
+ }
+ else
+ {
+ if ( Gia_ObjFanin0(pObj1)->Value <= Gia_ObjFanin1(pObj1)->Value )
+ {
+ if ( Gia_ObjFaninC1(pObj0) != Gia_ObjFaninC0(pObj1) || Gia_ObjFaninC0(pObj0) != Gia_ObjFaninC1(pObj1) ||
+ Vec_IntEntry(vMap0, Gia_ObjFaninId1p(p, pObj0)) != Vec_IntEntry( vMap1, Gia_ObjFaninId0p(p, pObj1)) ||
+ Vec_IntEntry(vMap0, Gia_ObjFaninId0p(p, pObj0)) != Vec_IntEntry( vMap1, Gia_ObjFaninId1p(p, pObj1)) )
+ return 0;
+ }
+ else
+ {
+ if ( Gia_ObjFaninC1(pObj0) != Gia_ObjFaninC1(pObj1) || Gia_ObjFaninC0(pObj0) != Gia_ObjFaninC0(pObj1) ||
+ Vec_IntEntry(vMap0, Gia_ObjFaninId1p(p, pObj0)) != Vec_IntEntry( vMap1, Gia_ObjFaninId1p(p, pObj1)) ||
+ Vec_IntEntry(vMap0, Gia_ObjFaninId0p(p, pObj0)) != Vec_IntEntry( vMap1, Gia_ObjFaninId0p(p, pObj1)) )
+ return 0;
+ }
+ }
+ }
+ }
+ return 1;
+}
+Vec_Wec_t * Gia_Iso2ManCheckIsoClasses( Gia_Man_t * p, Vec_Wec_t * vEquivs )
+{
+ Vec_Wec_t * vEquivs2;
+ Vec_Int_t * vRoots = Vec_IntAlloc( 10000 );
+ Vec_Int_t * vVec0 = Vec_IntAlloc( 10000 );
+ Vec_Int_t * vVec1 = Vec_IntAlloc( 10000 );
+ Vec_Int_t * vMap0 = Vec_IntStart( Gia_ManObjNum(p) );
+ Vec_Int_t * vMap1 = Vec_IntStart( Gia_ManObjNum(p) );
+ Vec_Int_t * vClass, * vClass2;
+ int i, k, Entry;
+ vEquivs2 = Vec_WecAlloc( 2 * Vec_WecSize(vEquivs) );
+ Vec_WecForEachLevel( vEquivs, vClass, i )
+ {
+ if ( i % 100 == 0 )
+ printf( "%8d finished...\r", i );
+/*
+ if ( i == 17 )
+ {
+ Gia_Man_t * pCone;
+ pCone = Gia_ManDupCones( p, Vec_IntArray(vClass), 2, 1 );
+ Gia_AigerWrite( pCone, "dump.aig", 0, 0 );
+ Gia_ManStop( pCone );
+ }
+*/
+ if ( Vec_IntSize(vClass) < 2 || Gia_Iso2ManCheckIsoClass(p, vClass, vRoots, vVec0, vVec1, vMap0, vMap1) )
+ {
+ vClass2 = Vec_WecPushLevel( vEquivs2 );
+ *vClass2 = *vClass;
+ vClass->pArray = NULL;
+ vClass->nSize = vClass->nCap = 0;
+ }
+ else
+ {
+// printf( "Class %d failed.\n", i );
+ Vec_IntForEachEntry( vClass, Entry, k )
+ {
+ vClass2 = Vec_WecPushLevel( vEquivs2 );
+ Vec_IntPush( vClass2, Entry );
+ }
+ }
+ }
+ Vec_IntFree( vRoots );
+ Vec_IntFree( vVec0 );
+ Vec_IntFree( vVec1 );
+ Vec_IntFree( vMap0 );
+ Vec_IntFree( vMap1 );
+ return vEquivs2;
+}
+
+
+/**Function*************************************************************
+
+ Synopsis []
+
+ Description []
+
+ SideEffects []
+
+ SeeAlso []
+
+***********************************************************************/
+Vec_Wec_t * Gia_Iso2ManPerform( Gia_Man_t * pGia, int fVerbose )
+{
+ Gia_Iso2Man_t * p;
+ clock_t clk = clock();
+ p = Gia_Iso2ManStart( pGia );
+ Gia_Iso2ManPrepare( pGia );
+ Gia_Iso2ManPropagate( pGia );
+ Gia_Iso2ManPrint( p, clock() - clk, fVerbose );
+ while ( Gia_Iso2ManUniqify( p ) )
+ {
+ Gia_Iso2ManPrint( p, clock() - clk, fVerbose );
+ Gia_Iso2ManPropagate( pGia );
+ }
+ Gia_Iso2ManPrint( p, clock() - clk, fVerbose );
+/*
+ Gia_Iso2ManUpdate( p, 20 );
+ while ( Gia_Iso2ManUniqify( p ) )
+ {
+ Gia_Iso2ManPrint( p, clock() - clk, fVerbose );
+ Gia_Iso2ManPropagate( pGia );
+ }
+ Gia_Iso2ManPrint( p, clock() - clk, fVerbose );
+*/
+ Gia_Iso2ManStop( p );
+ return Gia_Iso2ManDerivePoClasses( pGia );
+}
+
+/**Function*************************************************************
+
+ Synopsis []
+
+ Description []
+
+ SideEffects []
+
+ SeeAlso []
+
+***********************************************************************/
+Gia_Man_t * Gia_ManIsoReduce2( Gia_Man_t * pGia, Vec_Ptr_t ** pvPosEquivs, Vec_Ptr_t ** pvPiPerms, int fEstimate, int fDualOut, int fVerbose, int fVeryVerbose )
+{
+ Gia_Man_t * pPart;
+ Vec_Wec_t * vEquivs, * vEquivs2;
+ Vec_Int_t * vRemains;
+ int nClasses, nUsedPos;
+ clock_t clk = clock();
+ vEquivs = Gia_Iso2ManPerform( pGia, fVeryVerbose );
+ // report class stats
+ nClasses = Vec_WecCountNonTrivial( vEquivs, &nUsedPos );
+ printf( "Reduced %d outputs to %d candidate classes (%d outputs are in %d non-trivial classes). ",
+ Gia_ManPoNum(pGia), Vec_WecSize(vEquivs), nUsedPos, nClasses );
+ Abc_PrintTime( 1, "Time", clock() - clk );
+ if ( fEstimate )
+ {
+ Vec_WecFree( vEquivs );
+ return Gia_ManDup(pGia);
+ }
+ // verify classes
+ vEquivs2 = Gia_Iso2ManCheckIsoClasses( pGia, vEquivs );
+ Vec_WecFree( vEquivs );
+ vEquivs = vEquivs2;
+ // find the first outputs
+ vRemains = Vec_WecCollectFirsts( vEquivs );
+ // derive the final GIA
+ pPart = Gia_ManDupCones( pGia, Vec_IntArray(vRemains), Vec_IntSize(vRemains), 0 );
+ Vec_IntFree( vRemains );
+ // report class stats
+ nClasses = Vec_WecCountNonTrivial( vEquivs, &nUsedPos );
+ printf( "Reduced %d outputs to %d equivalence classes (%d outputs are in %d non-trivial classes). ",
+ Gia_ManPoNum(pGia), Vec_WecSize(vEquivs), nUsedPos, nClasses );
+ Abc_PrintTime( 1, "Time", clock() - clk );
+ Vec_WecFree( vEquivs );
+ if ( fVerbose )
+ {
+ printf( "Nontrivial classes:\n" );
+ Vec_WecPrint( vEquivs, 1 );
+ }
+ if ( pvPiPerms )
+ *pvPiPerms = NULL;
+ if ( pvPosEquivs )
+ *pvPosEquivs = Vec_WecConvertToVecPtr( vEquivs );
+// Gia_ManStopP( &pPart );
+ return pPart;
+}
+
+
+////////////////////////////////////////////////////////////////////////
+/// END OF FILE ///
+////////////////////////////////////////////////////////////////////////
+
+
+ABC_NAMESPACE_IMPL_END
+
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