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Improvements to AIG-based quantification.

This commit is contained in:
Alan Mishchenko 2017-11-26 14:41:05 -08:00
parent 7bcfe64369
commit c681506b48
6 changed files with 552 additions and 247 deletions
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4
abclib.dsp
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@ -4727,6 +4727,10 @@ SOURCE=.\src\aig\gia\giaEsop.c
# End Source File
# Begin Source File
SOURCE=.\src\aig\gia\giaExist.c
# End Source File
# Begin Source File
SOURCE=.\src\aig\gia\giaFalse.c
# End Source File
# Begin Source File

9
src/aig/gia/gia.h
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@ -222,6 +222,7 @@ struct Gia_Man_t_
int nSuppWords; // the number of support words
Vec_Wrd_t * vSuppWords; // support information
Vec_Int_t vCopiesTwo; // intermediate copies
Vec_Int_t vSuppVars; // used variables
};
@ -1263,11 +1264,11 @@ extern Gia_Man_t * Gia_ManDupMux( int iVar, Gia_Man_t * pCof1, Gia_Man_t
extern Gia_Man_t * Gia_ManDupBlock( Gia_Man_t * p, int nBlock );
extern Gia_Man_t * Gia_ManDupExist( Gia_Man_t * p, int iVar );
extern Gia_Man_t * Gia_ManDupUniv( Gia_Man_t * p, int iVar );
extern int Gia_ManQuantExist( Gia_Man_t * p, int iLit, int(*pFuncCiToKeep)(void *, int), void * pData );
extern Gia_Man_t * Gia_ManDupDfsSkip( Gia_Man_t * p );
extern Gia_Man_t * Gia_ManDupDfsCone( Gia_Man_t * p, Gia_Obj_t * pObj );
extern Gia_Man_t * Gia_ManDupConeSupp( Gia_Man_t * p, int iLit, Vec_Int_t * vCiIds );
extern int Gia_ManDupConeBack( Gia_Man_t * p, Gia_Man_t * pNew, Vec_Int_t * vCiIds );
extern int Gia_ManDupConeBackObjs( Gia_Man_t * p, Gia_Man_t * pNew, Vec_Int_t * vObjs );
extern Gia_Man_t * Gia_ManDupDfsNode( Gia_Man_t * p, Gia_Obj_t * pObj );
extern Gia_Man_t * Gia_ManDupDfsLitArray( Gia_Man_t * p, Vec_Int_t * vLits );
extern Gia_Man_t * Gia_ManDupTrimmed( Gia_Man_t * p, int fTrimCis, int fTrimCos, int fDualOut, int OutValue );
@ -1343,6 +1344,12 @@ extern int Gia_ManCountChoices( Gia_Man_t * p );
extern int Gia_ManFilterEquivsForSpeculation( Gia_Man_t * pGia, char * pName1, char * pName2, int fLatchA, int fLatchB );
extern int Gia_ManFilterEquivsUsingParts( Gia_Man_t * pGia, char * pName1, char * pName2 );
extern void Gia_ManFilterEquivsUsingLatches( Gia_Man_t * pGia, int fFlopsOnly, int fFlopsWith, int fUseRiDrivers );
/*=== giaExist.c =========================================================*/
extern void Gia_ManQuantSetSuppStart( Gia_Man_t * p );
extern void Gia_ManQuantSetSuppZero( Gia_Man_t * p );
extern void Gia_ManQuantSetSuppCi( Gia_Man_t * p, Gia_Obj_t * pObj );
extern void Gia_ManQuantUpdateCiSupp( Gia_Man_t * p, int iObj );
extern int Gia_ManQuantExist( Gia_Man_t * p, int iLit, int(*pFuncCiToKeep)(void *, int), void * pData );
/*=== giaFanout.c =========================================================*/
extern void Gia_ObjAddFanout( Gia_Man_t * p, Gia_Obj_t * pObj, Gia_Obj_t * pFanout );
extern void Gia_ObjRemoveFanout( Gia_Man_t * p, Gia_Obj_t * pObj, Gia_Obj_t * pFanout );

258
src/aig/gia/giaDup.c
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@ -21,7 +21,6 @@
#include "gia.h"
#include "misc/tim/tim.h"
#include "misc/vec/vecWec.h"
#include "misc/util/utilTruth.h"
ABC_NAMESPACE_IMPL_START
@ -1817,251 +1816,6 @@ Gia_Man_t * Gia_ManDupExist2( Gia_Man_t * p, int iVar )
return pNew;
}
/**Function*************************************************************
Synopsis [Existentially quantified several variables.]
Description []
SideEffects []
SeeAlso []
***********************************************************************/
static inline word * Gia_ManQuantInfoId( Gia_Man_t * p, int iObj ) { return Vec_WrdEntryP( p->vSuppWords, p->nSuppWords * iObj ); }
static inline word * Gia_ManQuantInfo( Gia_Man_t * p, Gia_Obj_t * pObj ) { return Gia_ManQuantInfoId( p, Gia_ObjId(p, pObj) ); }
static inline void Gia_ObjCopyGetTwoArray( Gia_Man_t * p, int iObj, int LitsOut[2] )
{
int * pLits = Vec_IntEntryP( &p->vCopiesTwo, 2*iObj );
LitsOut[0] = pLits[0];
LitsOut[1] = pLits[1];
}
static inline void Gia_ObjCopySetTwoArray( Gia_Man_t * p, int iObj, int LitsIn[2] )
{
int * pLits = Vec_IntEntryP( &p->vCopiesTwo, 2*iObj );
pLits[0] = LitsIn[0];
pLits[1] = LitsIn[1];
}
void Gia_ManQuantSetSuppStart( Gia_Man_t * p )
{
assert( Gia_ManObjNum(p) == 1 );
assert( p->vSuppWords == NULL );
p->iSuppPi = 0;
p->nSuppWords = 1;
p->vSuppWords = Vec_WrdAlloc( 1000 );
Vec_WrdPush( p->vSuppWords, 0 );
}
void Gia_ManQuantSetSuppZero( Gia_Man_t * p )
{
int w;
for ( w = 0; w < p->nSuppWords; w++ )
Vec_WrdPush( p->vSuppWords, 0 );
assert( Vec_WrdSize(p->vSuppWords) == p->nSuppWords * Gia_ManObjNum(p) );
}
void Gia_ManQuantSetSuppCi( Gia_Man_t * p, Gia_Obj_t * pObj )
{
assert( Gia_ObjIsCi(pObj) );
assert( p->vSuppWords != NULL );
if ( p->iSuppPi == 64 * p->nSuppWords )
{
Vec_Wrd_t * vTemp = Vec_WrdAlloc( 1000 ); word Data; int w;
Vec_WrdForEachEntry( p->vSuppWords, Data, w )
{
Vec_WrdPush( vTemp, Data );
if ( w % p->nSuppWords == 0 )
Vec_WrdPush( vTemp, 0 );
}
Vec_WrdFree( p->vSuppWords );
p->vSuppWords = vTemp;
p->nSuppWords++;
}
Gia_ManQuantSetSuppZero( p );
Abc_TtSetBit( Gia_ManQuantInfo(p, pObj), p->iSuppPi++ );
}
void Gia_ManQuantSetSuppAnd( Gia_Man_t * p, Gia_Obj_t * pObj )
{
int iObj = Gia_ObjId(p, pObj);
int iFan0 = Gia_ObjFaninId0(pObj, iObj);
int iFan1 = Gia_ObjFaninId1(pObj, iObj);
assert( Gia_ObjIsAnd(pObj) );
Gia_ManQuantSetSuppZero( p );
Abc_TtOr( Gia_ManQuantInfo(p, pObj), Gia_ManQuantInfoId(p, iFan0), Gia_ManQuantInfoId(p, iFan1), p->nSuppWords );
}
int Gia_ManQuantCheckSupp( Gia_Man_t * p, int iObj, int iSupp )
{
return Abc_TtGetBit( Gia_ManQuantInfoId(p, iObj), iSupp );
}
void Gia_ManQuantDupConeSupp_rec( Gia_Man_t * pNew, Gia_Man_t * p, Gia_Obj_t * pObj, Vec_Int_t * vCis, Vec_Int_t * vObjs, int(*pFuncCiToKeep)(void *, int), void * pData )
{
int iLit0, iLit1, iObj = Gia_ObjId( p, pObj );
int iLit = Gia_ObjCopyArray( p, iObj );
if ( iLit >= 0 )
return;
if ( Gia_ObjIsCi(pObj) )
{
int iLit = Gia_ManAppendCi( pNew );
Gia_Obj_t * pObjNew = Gia_ManObj( pNew, Abc_Lit2Var(iLit) );
if ( pFuncCiToKeep( pData, Gia_ObjCioId(pObj) ) )
Gia_ManQuantSetSuppZero( pNew );
else
Gia_ManQuantSetSuppCi( pNew, pObjNew );
Gia_ObjSetCopyArray( p, iObj, iLit );
Vec_IntPush( vCis, iObj );
return;
}
assert( Gia_ObjIsAnd(pObj) );
Gia_ManQuantDupConeSupp_rec( pNew, p, Gia_ObjFanin0(pObj), vCis, vObjs, pFuncCiToKeep, pData );
Gia_ManQuantDupConeSupp_rec( pNew, p, Gia_ObjFanin1(pObj), vCis, vObjs, pFuncCiToKeep, pData );
iLit0 = Gia_ObjCopyArray( p, Gia_ObjFaninId0(pObj, iObj) );
iLit1 = Gia_ObjCopyArray( p, Gia_ObjFaninId1(pObj, iObj) );
iLit0 = Abc_LitNotCond( iLit0, Gia_ObjFaninC0(pObj) );
iLit1 = Abc_LitNotCond( iLit1, Gia_ObjFaninC1(pObj) );
iLit = Gia_ManHashAnd( pNew, iLit0, iLit1 );
Gia_ObjSetCopyArray( p, iObj, iLit );
Vec_IntPush( vObjs, iObj );
}
Gia_Man_t * Gia_ManQuantDupConeSupp( Gia_Man_t * p, int iLit, int(*pFuncCiToKeep)(void *, int), void * pData, Vec_Int_t ** pvCis, int * pOutLit )
{
Gia_Man_t * pNew; int i, iLit0, iObj;
Gia_Obj_t * pObj, * pRoot = Gia_ManObj( p, Abc_Lit2Var(iLit) );
Vec_Int_t * vCis = Vec_IntAlloc( 1000 );
Vec_Int_t * vObjs = Vec_IntAlloc( 1000 );
assert( Gia_ObjIsAnd(pRoot) );
if ( Vec_IntSize(&p->vCopies) < Gia_ManObjNum(p) )
Vec_IntFillExtra( &p->vCopies, Gia_ManObjNum(p), -1 );
pNew = Gia_ManStart( 1000 );
Gia_ManHashStart( pNew );
Gia_ManQuantSetSuppStart( pNew );
Gia_ManQuantDupConeSupp_rec( pNew, p, pRoot, vCis, vObjs, pFuncCiToKeep, pData );
iLit0 = Gia_ObjCopyArray( p, Abc_Lit2Var(iLit) );
iLit0 = Abc_LitNotCond( iLit0, Abc_LitIsCompl(iLit) );
if ( pOutLit ) *pOutLit = iLit0;
Gia_ManForEachObjVec( vCis, p, pObj, i )
Gia_ObjSetCopyArray( p, Gia_ObjId(p, pObj), -1 );
Gia_ManForEachObjVec( vObjs, p, pObj, i )
Gia_ObjSetCopyArray( p, Gia_ObjId(p, pObj), -1 );
//assert( Vec_IntCountLarger(&p->vCopies, -1) == 0 );
Vec_IntFree( vObjs );
// remap into CI Ids
Vec_IntForEachEntry( vCis, iObj, i )
Vec_IntWriteEntry( vCis, i, Gia_ManIdToCioId(p, iObj) );
if ( pvCis ) *pvCis = vCis;
return pNew;
}
void Gia_ManQuantExist_rec( Gia_Man_t * p, int iObj, int pRes[2] )
{
Gia_Obj_t * pObj;
int Lits0[2], Lits1[2], pFans[2], fCompl[2];
if ( Gia_ObjIsTravIdCurrentId( p, iObj ) )
{
Gia_ObjCopyGetTwoArray( p, iObj, pRes );
return;
}
Gia_ObjSetTravIdCurrentId( p, iObj );
pObj = Gia_ManObj( p, iObj );
if ( Gia_ObjIsCi(pObj) )
{
pRes[0] = 0; pRes[1] = 1;
Gia_ObjCopySetTwoArray( p, iObj, pRes );
return;
}
pFans[0] = Gia_ObjFaninId0( pObj, iObj );
pFans[1] = Gia_ObjFaninId1( pObj, iObj );
fCompl[0] = Gia_ObjFaninC0( pObj );
fCompl[1] = Gia_ObjFaninC1( pObj );
if ( Gia_ManQuantCheckSupp(p, pFans[0], p->iSuppPi) )
Gia_ManQuantExist_rec( p, pFans[0], Lits0 );
else
Lits0[0] = Lits0[1] = Abc_Var2Lit( pFans[0], 0 );
if ( Gia_ManQuantCheckSupp(p, pFans[1], p->iSuppPi) )
Gia_ManQuantExist_rec( p, pFans[1], Lits1 );
else
Lits1[0] = Lits1[1] = Abc_Var2Lit( pFans[1], 0 );
pRes[0] = Gia_ManHashAnd( p, Abc_LitNotCond(Lits0[0], fCompl[0]), Abc_LitNotCond(Lits1[0], fCompl[1]) );
pRes[1] = Gia_ManHashAnd( p, Abc_LitNotCond(Lits0[1], fCompl[0]), Abc_LitNotCond(Lits1[1], fCompl[1]) );
Gia_ObjCopySetTwoArray( p, iObj, pRes );
}
int Gia_ManQuantExist( Gia_Man_t * p0, int iLit, int(*pFuncCiToKeep)(void *, int), void * pData )
{
// abctime clk = Abc_Clock();
Gia_Man_t * pNew;
Vec_Int_t * vOuts, * vOuts2, * vCis;
Gia_Obj_t * pObj = Gia_ManObj( p0, Abc_Lit2Var(iLit) );
int i, n, Entry, Lit, OutLit = -1, pLits[2], nVarsQua, nAndsOld, nAndsNew;
if ( iLit < 2 ) return iLit;
if ( Gia_ObjIsCi(pObj) ) return pFuncCiToKeep(pData, Gia_ObjCioId(pObj)) ? iLit : 1;
assert( Gia_ObjIsAnd(pObj) );
pNew = Gia_ManQuantDupConeSupp( p0, iLit, pFuncCiToKeep, pData, &vCis, &OutLit );
if ( pNew->iSuppPi == 0 )
{
Gia_ManStop( pNew );
Vec_IntFree( vCis );
return iLit;
}
assert( pNew->iSuppPi > 0 && pNew->iSuppPi <= 64 * pNew->nSuppWords );
vOuts = Vec_IntAlloc( 100 );
vOuts2 = Vec_IntAlloc( 100 );
assert( OutLit > 1 );
Vec_IntPush( vOuts, OutLit );
nVarsQua = pNew->iSuppPi;
nAndsOld = Gia_ManAndNum(pNew);
while ( --pNew->iSuppPi >= 0 )
{
//printf( "Quantifying input %d:\n", p->iSuppPi );
if ( Vec_IntSize(&pNew->vCopiesTwo) < 2*Gia_ManObjNum(pNew) )
Vec_IntFillExtra( &pNew->vCopiesTwo, 2*Gia_ManObjNum(pNew), -1 );
assert( Vec_IntSize(vOuts) > 0 );
Vec_IntClear( vOuts2 );
Gia_ManIncrementTravId( pNew );
Vec_IntForEachEntry( vOuts, Entry, i )
{
Gia_ManQuantExist_rec( pNew, Abc_Lit2Var(Entry), pLits );
for ( n = 0; n < 2; n++ )
{
Lit = Abc_LitNotCond( pLits[n], Abc_LitIsCompl(Entry) );
if ( Lit == 0 )
continue;
if ( Lit == 1 )
{
Vec_IntFree( vOuts );
Vec_IntFree( vOuts2 );
Gia_ManStop( pNew );
Vec_IntFree( vCis );
return 1;
}
Vec_IntPushUnique( vOuts2, Lit );
}
}
Vec_IntClear( vOuts );
ABC_SWAP( Vec_Int_t *, vOuts, vOuts2 );
}
//printf( "The number of diff cofactors = %d.\n", Vec_IntSize(vOuts) );
assert( Vec_IntSize(vOuts) > 0 );
Vec_IntForEachEntry( vOuts, Entry, i )
Vec_IntWriteEntry( vOuts, i, Abc_LitNot(Entry) );
OutLit = Gia_ManHashAndMulti( pNew, vOuts );
OutLit = Abc_LitNot( OutLit );
Vec_IntFree( vOuts );
Vec_IntFree( vOuts2 );
// transfer back
Gia_ManAppendCo( pNew, OutLit );
nAndsNew = Gia_ManAndNum(p0);
Lit = Gia_ManDupConeBack( p0, pNew, vCis );
nAndsNew = Gia_ManAndNum(p0) - nAndsNew;
Gia_ManStop( pNew );
// report the result
// printf( "Performed quantification with %6d nodes, %3d keep-vars, %3d quant-vars, resulting in %5d new nodes. ",
// nAndsOld, Vec_IntSize(vCis) - nVarsQua, nVarsQua, nAndsNew );
// Abc_PrintTime( 1, "Time", Abc_Clock() - clk );
Vec_IntFree( vCis );
return Lit;
}
/**Function*************************************************************
@ -2198,6 +1952,18 @@ int Gia_ManDupConeBack( Gia_Man_t * p, Gia_Man_t * pNew, Vec_Int_t * vCiIds )
Gia_ManDupConeBack_rec( p, pNew, Gia_ObjFanin0(pRoot) );
return Gia_ObjFanin0Copy(pRoot);
}
int Gia_ManDupConeBackObjs( Gia_Man_t * p, Gia_Man_t * pNew, Vec_Int_t * vObjs )
{
Gia_Obj_t * pObj, * pRoot; int i;
assert( Gia_ManCiNum(pNew) == Vec_IntSize(vObjs) );
Gia_ManFillValue(pNew);
Gia_ManConst0(pNew)->Value = 0;
Gia_ManForEachCi( pNew, pObj, i )
pObj->Value = Abc_Var2Lit( Vec_IntEntry(vObjs, i), 0 );
pRoot = Gia_ManCo(pNew, 0);
Gia_ManDupConeBack_rec( p, pNew, Gia_ObjFanin0(pRoot) );
return Gia_ObjFanin0Copy(pRoot);
}
/**Function*************************************************************

526
src/aig/gia/giaExist.c Normal file
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@ -0,0 +1,526 @@
/**CFile****************************************************************
FileName [giaExist.c]
SystemName [ABC: Logic synthesis and verification system.]
PackageName [Scalable AIG package.]
Synopsis [Existential quantification.]
Author [Alan Mishchenko]
Affiliation [UC Berkeley]
Date [Ver. 1.0. Started - June 20, 2005.]
Revision [$Id: giaExist.c,v 1.00 2005/06/20 00:00:00 alanmi Exp $]
***********************************************************************/
#include "gia.h"
#include "misc/util/utilTruth.h"
ABC_NAMESPACE_IMPL_START
////////////////////////////////////////////////////////////////////////
/// DECLARATIONS ///
////////////////////////////////////////////////////////////////////////
////////////////////////////////////////////////////////////////////////
/// FUNCTION DEFINITIONS ///
////////////////////////////////////////////////////////////////////////
/**Function*************************************************************
Synopsis [Existentially quantified several variables.]
Description []
SideEffects []
SeeAlso []
***********************************************************************/
static inline word * Gia_ManQuantInfoId( Gia_Man_t * p, int iObj ) { return Vec_WrdEntryP( p->vSuppWords, p->nSuppWords * iObj ); }
static inline word * Gia_ManQuantInfo( Gia_Man_t * p, Gia_Obj_t * pObj ) { return Gia_ManQuantInfoId( p, Gia_ObjId(p, pObj) ); }
static inline void Gia_ObjCopyGetTwoArray( Gia_Man_t * p, int iObj, int LitsOut[2] )
{
int * pLits = Vec_IntEntryP( &p->vCopiesTwo, 2*iObj );
LitsOut[0] = pLits[0];
LitsOut[1] = pLits[1];
}
static inline void Gia_ObjCopySetTwoArray( Gia_Man_t * p, int iObj, int LitsIn[2] )
{
int * pLits = Vec_IntEntryP( &p->vCopiesTwo, 2*iObj );
pLits[0] = LitsIn[0];
pLits[1] = LitsIn[1];
}
/**Function*************************************************************
Synopsis [Existentially quantified several variables.]
Description []
SideEffects []
SeeAlso []
***********************************************************************/
int Gia_ManQuantVerify_rec( Gia_Man_t * p, int iObj, int CiId )
{
Gia_Obj_t * pObj;
if ( Gia_ObjIsTravIdCurrentId( p, iObj ) )
return 0;
Gia_ObjSetTravIdCurrentId( p, iObj );
pObj = Gia_ManObj( p, iObj );
if ( Gia_ObjIsCi(pObj) )
return Gia_ObjCioId(pObj) == CiId;
return Gia_ManQuantVerify_rec( p, Gia_ObjFaninId0(pObj, iObj), CiId ) ||
Gia_ManQuantVerify_rec( p, Gia_ObjFaninId1(pObj, iObj), CiId );
}
void Gia_ManQuantVerify( Gia_Man_t * p, int iObj )
{
word * pInfo = Gia_ManQuantInfoId( p, iObj ); int i, CiId;
assert( Gia_ObjIsAnd(Gia_ManObj(p, iObj)) );
Vec_IntForEachEntry( &p->vSuppVars, CiId, i )
{
Gia_ManIncrementTravId( p );
if ( Abc_TtGetBit(pInfo, i) != Gia_ManQuantVerify_rec(p, iObj, CiId) )
printf( "Mismatch at node %d related to CI %d (%d).\n", iObj, CiId, Abc_TtGetBit(pInfo, i) );
}
}
void Gia_ManQuantSetSuppStart( Gia_Man_t * p )
{
assert( Gia_ManObjNum(p) == 1 );
assert( p->vSuppWords == NULL );
assert( Vec_IntSize(&p->vSuppVars) == 0 );
p->iSuppPi = 0;
p->nSuppWords = 1;
p->vSuppWords = Vec_WrdAlloc( 1000 );
Vec_WrdPush( p->vSuppWords, 0 );
}
void Gia_ManQuantSetSuppZero( Gia_Man_t * p )
{
int w;
for ( w = 0; w < p->nSuppWords; w++ )
Vec_WrdPush( p->vSuppWords, 0 );
assert( Vec_WrdSize(p->vSuppWords) == p->nSuppWords * Gia_ManObjNum(p) );
}
void Gia_ManQuantSetSuppCi( Gia_Man_t * p, Gia_Obj_t * pObj )
{
assert( Gia_ObjIsCi(pObj) );
assert( p->vSuppWords != NULL );
if ( p->iSuppPi == 64 * p->nSuppWords )
{
word Data; int w, Count = 0, Size = Vec_WrdSize(p->vSuppWords);
Vec_Wrd_t * vTemp = Vec_WrdAlloc( Size ? 2 * Size : 1000 );
Vec_WrdForEachEntry( p->vSuppWords, Data, w )
{
Vec_WrdPush( vTemp, Data );
if ( ++Count == p->nSuppWords )
{
Vec_WrdPush( vTemp, 0 );
Count = 0;
}
}
Vec_WrdFree( p->vSuppWords );
p->vSuppWords = vTemp;
p->nSuppWords++;
assert( Vec_WrdSize(p->vSuppWords) == p->nSuppWords * Gia_ManObjNum(p) );
//printf( "Resizing to %d words.\n", p->nSuppWords );
}
assert( p->iSuppPi == Vec_IntSize(&p->vSuppVars) );
Vec_IntPush( &p->vSuppVars, Gia_ObjCioId(pObj) );
Abc_TtSetBit( Gia_ManQuantInfo(p, pObj), p->iSuppPi++ );
}
void Gia_ManQuantSetSuppAnd( Gia_Man_t * p, Gia_Obj_t * pObj )
{
int iObj = Gia_ObjId(p, pObj);
int iFan0 = Gia_ObjFaninId0(pObj, iObj);
int iFan1 = Gia_ObjFaninId1(pObj, iObj);
assert( Gia_ObjIsAnd(pObj) );
Gia_ManQuantSetSuppZero( p );
Abc_TtOr( Gia_ManQuantInfo(p, pObj), Gia_ManQuantInfoId(p, iFan0), Gia_ManQuantInfoId(p, iFan1), p->nSuppWords );
}
int Gia_ManQuantCheckSupp( Gia_Man_t * p, int iObj, int iSupp )
{
return Abc_TtGetBit( Gia_ManQuantInfoId(p, iObj), iSupp );
}
void Gia_ManQuantUpdateCiSupp( Gia_Man_t * p, int iObj )
{
if ( Abc_TtIsConst0( Gia_ManQuantInfoId(p, iObj), p->nSuppWords ) )
Gia_ManQuantSetSuppCi( p, Gia_ManObj(p, iObj) );
assert( !Abc_TtIsConst0( Gia_ManQuantInfoId(p, iObj), p->nSuppWords ) );
}
int Gia_ManQuantCheckOverlap( Gia_Man_t * p, int iObj )
{
return Abc_TtIntersect( Gia_ManQuantInfoId(p, iObj), Gia_ManQuantInfoId(p, 0), p->nSuppWords, 0 );
}
void Gia_ManQuantMarkUsedCis( Gia_Man_t * p, int(*pFuncCiToKeep)(void *, int), void * pData )
{
int i, CiId;
word * pInfo = Gia_ManQuantInfoId( p, 0 );
Abc_TtClear( pInfo, p->nSuppWords );
assert( Abc_TtIsConst0(pInfo, p->nSuppWords) );
Vec_IntForEachEntry( &p->vSuppVars, CiId, i )
if ( !pFuncCiToKeep( pData, CiId ) ) // quant var
Abc_TtSetBit( pInfo, i );
}
int Gia_ManQuantCountUsed_rec( Gia_Man_t * p, int iObj )
{
Gia_Obj_t * pObj; int Count = 1;
if ( Gia_ObjIsTravIdCurrentId( p, iObj ) )
return 0;
Gia_ObjSetTravIdCurrentId( p, iObj );
pObj = Gia_ManObj( p, iObj );
if ( Gia_ObjIsCi(pObj) )
return 0;
if ( Gia_ManQuantCheckSupp(p, Gia_ObjFaninId0(pObj, iObj), p->iSuppPi) )
Count += Gia_ManQuantCountUsed_rec( p, Gia_ObjFaninId0(pObj, iObj) );
if ( Gia_ManQuantCheckSupp(p, Gia_ObjFaninId1(pObj, iObj), p->iSuppPi) )
Count += Gia_ManQuantCountUsed_rec( p, Gia_ObjFaninId1(pObj, iObj) );
return Count;
}
int Gia_ManQuantCountUsed( Gia_Man_t * p, int iObj )
{
Gia_ManIncrementTravId( p );
return Gia_ManQuantCountUsed_rec( p, iObj );
}
void Gia_ManQuantDupConeSupp_rec( Gia_Man_t * pNew, Gia_Man_t * p, Gia_Obj_t * pObj, Vec_Int_t * vCis, Vec_Int_t * vObjs, int(*pFuncCiToKeep)(void *, int), void * pData )
{
int iLit0, iLit1, iObj = Gia_ObjId( p, pObj );
int iLit = Gia_ObjCopyArray( p, iObj );
if ( iLit >= 0 )
return;
if ( Gia_ObjIsCi(pObj) )
{
int iLit = Gia_ManAppendCi( pNew );
Gia_Obj_t * pObjNew = Gia_ManObj( pNew, Abc_Lit2Var(iLit) );
Gia_ManQuantSetSuppZero( pNew );
if ( !pFuncCiToKeep( pData, Gia_ObjCioId(pObj) ) )
{
//printf( "Collecting CI %d\n", Gia_ObjCioId(pObj)+1 );
Gia_ManQuantSetSuppCi( pNew, pObjNew );
}
Gia_ObjSetCopyArray( p, iObj, iLit );
Vec_IntPush( vCis, iObj );
return;
}
assert( Gia_ObjIsAnd(pObj) );
Gia_ManQuantDupConeSupp_rec( pNew, p, Gia_ObjFanin0(pObj), vCis, vObjs, pFuncCiToKeep, pData );
Gia_ManQuantDupConeSupp_rec( pNew, p, Gia_ObjFanin1(pObj), vCis, vObjs, pFuncCiToKeep, pData );
iLit0 = Gia_ObjCopyArray( p, Gia_ObjFaninId0(pObj, iObj) );
iLit1 = Gia_ObjCopyArray( p, Gia_ObjFaninId1(pObj, iObj) );
iLit0 = Abc_LitNotCond( iLit0, Gia_ObjFaninC0(pObj) );
iLit1 = Abc_LitNotCond( iLit1, Gia_ObjFaninC1(pObj) );
iLit = Gia_ManHashAnd( pNew, iLit0, iLit1 );
Gia_ObjSetCopyArray( p, iObj, iLit );
Vec_IntPush( vObjs, iObj );
}
Gia_Man_t * Gia_ManQuantDupConeSupp( Gia_Man_t * p, int iLit, int(*pFuncCiToKeep)(void *, int), void * pData, Vec_Int_t ** pvCis, int * pOutLit )
{
Gia_Man_t * pNew; int i, iLit0, iObj;
Gia_Obj_t * pObj, * pRoot = Gia_ManObj( p, Abc_Lit2Var(iLit) );
Vec_Int_t * vCis = Vec_IntAlloc( 1000 );
Vec_Int_t * vObjs = Vec_IntAlloc( 1000 );
assert( Gia_ObjIsAnd(pRoot) );
if ( Vec_IntSize(&p->vCopies) < Gia_ManObjNum(p) )
Vec_IntFillExtra( &p->vCopies, Gia_ManObjNum(p), -1 );
pNew = Gia_ManStart( 1000 );
Gia_ManHashStart( pNew );
Gia_ManQuantSetSuppStart( pNew );
Gia_ManQuantDupConeSupp_rec( pNew, p, pRoot, vCis, vObjs, pFuncCiToKeep, pData );
iLit0 = Gia_ObjCopyArray( p, Abc_Lit2Var(iLit) );
iLit0 = Abc_LitNotCond( iLit0, Abc_LitIsCompl(iLit) );
if ( pOutLit ) *pOutLit = iLit0;
Gia_ManForEachObjVec( vCis, p, pObj, i )
Gia_ObjSetCopyArray( p, Gia_ObjId(p, pObj), -1 );
Gia_ManForEachObjVec( vObjs, p, pObj, i )
Gia_ObjSetCopyArray( p, Gia_ObjId(p, pObj), -1 );
//assert( Vec_IntCountLarger(&p->vCopies, -1) == 0 );
Vec_IntFree( vObjs );
// remap into CI Ids
Vec_IntForEachEntry( vCis, iObj, i )
Vec_IntWriteEntry( vCis, i, Gia_ManIdToCioId(p, iObj) );
if ( pvCis ) *pvCis = vCis;
return pNew;
}
void Gia_ManQuantExist_rec( Gia_Man_t * p, int iObj, int pRes[2] )
{
Gia_Obj_t * pObj;
int Lits0[2], Lits1[2], pFans[2], fCompl[2];
if ( Gia_ObjIsTravIdCurrentId( p, iObj ) )
{
Gia_ObjCopyGetTwoArray( p, iObj, pRes );
return;
}
Gia_ObjSetTravIdCurrentId( p, iObj );
pObj = Gia_ManObj( p, iObj );
if ( Gia_ObjIsCi(pObj) )
{
pRes[0] = 0; pRes[1] = 1;
Gia_ObjCopySetTwoArray( p, iObj, pRes );
return;
}
pFans[0] = Gia_ObjFaninId0( pObj, iObj );
pFans[1] = Gia_ObjFaninId1( pObj, iObj );
fCompl[0] = Gia_ObjFaninC0( pObj );
fCompl[1] = Gia_ObjFaninC1( pObj );
if ( Gia_ManQuantCheckSupp(p, pFans[0], p->iSuppPi) )
Gia_ManQuantExist_rec( p, pFans[0], Lits0 );
else
Lits0[0] = Lits0[1] = Abc_Var2Lit( pFans[0], 0 );
if ( Gia_ManQuantCheckSupp(p, pFans[1], p->iSuppPi) )
Gia_ManQuantExist_rec( p, pFans[1], Lits1 );
else
Lits1[0] = Lits1[1] = Abc_Var2Lit( pFans[1], 0 );
pRes[0] = Gia_ManHashAnd( p, Abc_LitNotCond(Lits0[0], fCompl[0]), Abc_LitNotCond(Lits1[0], fCompl[1]) );
pRes[1] = Gia_ManHashAnd( p, Abc_LitNotCond(Lits0[1], fCompl[0]), Abc_LitNotCond(Lits1[1], fCompl[1]) );
Gia_ObjCopySetTwoArray( p, iObj, pRes );
}
int Gia_ManQuantExist2( Gia_Man_t * p0, int iLit, int(*pFuncCiToKeep)(void *, int), void * pData )
{
// abctime clk = Abc_Clock();
Gia_Man_t * pNew;
Vec_Int_t * vOuts, * vOuts2, * vCis;
Gia_Obj_t * pObj = Gia_ManObj( p0, Abc_Lit2Var(iLit) );
int i, n, Entry, Lit, OutLit = -1, pLits[2], nVarsQua, nAndsOld, nAndsNew;
if ( iLit < 2 ) return iLit;
if ( Gia_ObjIsCi(pObj) ) return pFuncCiToKeep(pData, Gia_ObjCioId(pObj)) ? iLit : 1;
assert( Gia_ObjIsAnd(pObj) );
pNew = Gia_ManQuantDupConeSupp( p0, iLit, pFuncCiToKeep, pData, &vCis, &OutLit );
if ( pNew->iSuppPi == 0 )
{
Gia_ManStop( pNew );
Vec_IntFree( vCis );
return iLit;
}
assert( pNew->iSuppPi > 0 && pNew->iSuppPi <= 64 * pNew->nSuppWords );
vOuts = Vec_IntAlloc( 100 );
vOuts2 = Vec_IntAlloc( 100 );
assert( OutLit > 1 );
Vec_IntPush( vOuts, OutLit );
nVarsQua = pNew->iSuppPi;
nAndsOld = Gia_ManAndNum(pNew);
while ( --pNew->iSuppPi >= 0 )
{
Entry = Abc_Lit2Var( Vec_IntEntry(vOuts, 0) );
// printf( "Quantifying input %d with %d affected nodes (out of %d):\n",
// pNew->iSuppPi, Gia_ManQuantCountUsed(pNew,Entry), Gia_ManAndNum(pNew) );
if ( Vec_IntSize(&pNew->vCopiesTwo) < 2*Gia_ManObjNum(pNew) )
Vec_IntFillExtra( &pNew->vCopiesTwo, 2*Gia_ManObjNum(pNew), -1 );
assert( Vec_IntSize(vOuts) > 0 );
Vec_IntClear( vOuts2 );
Gia_ManIncrementTravId( pNew );
Vec_IntForEachEntry( vOuts, Entry, i )
{
Gia_ManQuantExist_rec( pNew, Abc_Lit2Var(Entry), pLits );
for ( n = 0; n < 2; n++ )
{
Lit = Abc_LitNotCond( pLits[n], Abc_LitIsCompl(Entry) );
if ( Lit == 0 )
continue;
if ( Lit == 1 )
{
Vec_IntFree( vOuts );
Vec_IntFree( vOuts2 );
Gia_ManStop( pNew );
Vec_IntFree( vCis );
return 1;
}
Vec_IntPushUnique( vOuts2, Lit );
}
}
Vec_IntClear( vOuts );
ABC_SWAP( Vec_Int_t *, vOuts, vOuts2 );
}
// printf( "\n" );
//printf( "The number of diff cofactors = %d.\n", Vec_IntSize(vOuts) );
assert( Vec_IntSize(vOuts) > 0 );
Vec_IntForEachEntry( vOuts, Entry, i )
Vec_IntWriteEntry( vOuts, i, Abc_LitNot(Entry) );
OutLit = Gia_ManHashAndMulti( pNew, vOuts );
OutLit = Abc_LitNot( OutLit );
Vec_IntFree( vOuts );
Vec_IntFree( vOuts2 );
// transfer back
Gia_ManAppendCo( pNew, OutLit );
nAndsNew = Gia_ManAndNum(p0);
Lit = Gia_ManDupConeBack( p0, pNew, vCis );
nAndsNew = Gia_ManAndNum(p0) - nAndsNew;
Gia_ManStop( pNew );
// report the result
// printf( "Performed quantification with %6d nodes, %3d keep-vars, %3d quant-vars, resulting in %5d new nodes. \n",
// nAndsOld, Vec_IntSize(vCis) - nVarsQua, nVarsQua, nAndsNew );
// Abc_PrintTime( 1, "Time", Abc_Clock() - clk );
Vec_IntFree( vCis );
return Lit;
}
/**Function*************************************************************
Synopsis [Existentially quantified several variables.]
Description []
SideEffects []
SeeAlso []
***********************************************************************/
void Gia_ManQuantCollect_rec( Gia_Man_t * p, int iObj, Vec_Int_t * vQuantCis, Vec_Int_t * vQuantSide, Vec_Int_t * vQuantAnds )
{
Gia_Obj_t * pObj;
if ( Gia_ObjIsTravIdCurrentId( p, iObj ) )
return;
Gia_ObjSetTravIdCurrentId( p, iObj );
if ( !Gia_ManQuantCheckOverlap(p, iObj) )
{
Vec_IntPush( vQuantSide, iObj );
return;
}
pObj = Gia_ManObj( p, iObj );
if ( Gia_ObjIsCi(pObj) )
{
Vec_IntPush( vQuantCis, iObj );
return;
}
Gia_ManQuantCollect_rec( p, Gia_ObjFaninId0(pObj, iObj), vQuantCis, vQuantSide, vQuantAnds );
Gia_ManQuantCollect_rec( p, Gia_ObjFaninId1(pObj, iObj), vQuantCis, vQuantSide, vQuantAnds );
Vec_IntPush( vQuantAnds, iObj );
}
void Gia_ManQuantCollect( Gia_Man_t * p, int iObj, int(*pFuncCiToKeep)(void *, int), void * pData, Vec_Int_t * vQuantCis, Vec_Int_t * vQuantSide, Vec_Int_t * vQuantAnds )
{
Gia_ManQuantMarkUsedCis( p, pFuncCiToKeep, pData );
Gia_ManIncrementTravId( p );
Gia_ManQuantCollect_rec( p, iObj, vQuantCis, vQuantSide, vQuantAnds );
// printf( "\nCreated cone with %d quant-vars, %d side-inputs, and %d internal nodes.\n",
// Vec_IntSize(p->vQuantCis), Vec_IntSize(p->vQuantSide), Vec_IntSize(p->vQuantAnds) );
}
Gia_Man_t * Gia_ManQuantExist2Dup( Gia_Man_t * p, int iLit, Vec_Int_t * vCis, Vec_Int_t * vSide, Vec_Int_t * vAnds, int * pOutLit )
{
int i, iObj, iLit0, iLit1, iLitR;
Gia_Man_t * pNew = Gia_ManStart( Vec_IntSize(vSide) + Vec_IntSize(vCis) + 10*Vec_IntSize(vAnds) );
Gia_ManQuantSetSuppStart( pNew );
Gia_ManHashStart( pNew );
if ( Vec_IntSize(&p->vCopies) < Gia_ManObjNum(p) )
Vec_IntFillExtra( &p->vCopies, Gia_ManObjNum(p), -1 );
Vec_IntForEachEntry( vSide, iObj, i )
{
Gia_ObjSetCopyArray( p, iObj, Gia_ManAppendCi(pNew) );
Gia_ManQuantSetSuppZero( pNew );
}
Vec_IntForEachEntry( vCis, iObj, i )
{
Gia_ObjSetCopyArray( p, iObj, (iLit0 = Gia_ManAppendCi(pNew)) );
Gia_ManQuantSetSuppZero( pNew );
Gia_ManQuantSetSuppCi( pNew, Gia_ManObj(pNew, Abc_Lit2Var(iLit0)) );
}
Vec_IntForEachEntry( vAnds, iObj, i )
{
Gia_Obj_t * pObj = Gia_ManObj( p, iObj );
iLit0 = Gia_ObjCopyArray( p, Gia_ObjFaninId0(pObj, iObj) );
iLit1 = Gia_ObjCopyArray( p, Gia_ObjFaninId1(pObj, iObj) );
iLit0 = Abc_LitNotCond( iLit0, Gia_ObjFaninC0(pObj) );
iLit1 = Abc_LitNotCond( iLit1, Gia_ObjFaninC1(pObj) );
iLitR = Gia_ManHashAnd( pNew, iLit0, iLit1 );
Gia_ObjSetCopyArray( p, iObj, iLitR );
}
iLit0 = Gia_ObjCopyArray( p, Abc_Lit2Var(iLit) );
iLit0 = Abc_LitNotCond( iLit0, Abc_LitIsCompl(iLit) );
if ( pOutLit ) *pOutLit = iLit0;
Vec_IntForEachEntry( vSide, iObj, i )
Gia_ObjSetCopyArray( p, iObj, -1 );
Vec_IntForEachEntry( vCis, iObj, i )
Gia_ObjSetCopyArray( p, iObj, -1 );
Vec_IntForEachEntry( vAnds, iObj, i )
Gia_ObjSetCopyArray( p, iObj, -1 );
return pNew;
}
int Gia_ManQuantExistInt( Gia_Man_t * p0, int iLit, Vec_Int_t * vCis, Vec_Int_t * vSide, Vec_Int_t * vAnds )
{
int i, Lit, iOutLit, nAndsNew, pLits[2], pRes[2] = {0};
Gia_Man_t * pNew;
if ( iLit < 2 )
return 0;
if ( Vec_IntSize(vCis) == 0 )
return iLit;
if ( Vec_IntSize(vAnds) == 0 )
{
assert( Gia_ObjIsCi( Gia_ManObj(p0, Abc_Lit2Var(iLit)) ) );
return Vec_IntFind(vCis, Abc_Lit2Var(iLit)) == -1 ? iLit : 1;
}
pNew = Gia_ManQuantExist2Dup( p0, iLit, vCis, vSide, vAnds, &iOutLit );
if ( Vec_IntSize(&pNew->vCopiesTwo) < 2*Gia_ManObjNum(pNew) )
Vec_IntFillExtra( &pNew->vCopiesTwo, 2*Gia_ManObjNum(pNew), -1 );
Gia_ObjCopySetTwoArray( pNew, 0, pRes );
for ( i = 0; i < Gia_ManCiNum(pNew); i++ )
{
pRes[0] = pRes[1] = Abc_Var2Lit( i+1, 0 );
Gia_ObjCopySetTwoArray( pNew, i+1, pRes );
}
assert( pNew->iSuppPi == Gia_ManCiNum(pNew) - Vec_IntSize(vSide) );
for ( i = Gia_ManCiNum(pNew) - 1; i >= Vec_IntSize(vSide); i-- )
{
pRes[0] = 0; pRes[1] = 1;
Gia_ObjCopySetTwoArray( pNew, i+1, pRes );
pNew->iSuppPi--;
if ( Vec_IntSize(&pNew->vCopiesTwo) < 2*Gia_ManObjNum(pNew) )
Vec_IntFillExtra( &pNew->vCopiesTwo, 2*Gia_ManObjNum(pNew), -1 );
Gia_ManIncrementTravId( pNew );
Gia_ManQuantExist_rec( pNew, Abc_Lit2Var(iOutLit), pLits );
pLits[0] = Abc_LitNotCond( pLits[0], Abc_LitIsCompl(iOutLit) );
pLits[1] = Abc_LitNotCond( pLits[1], Abc_LitIsCompl(iOutLit) );
iOutLit = Gia_ManHashOr( pNew, pLits[0], pLits[1] );
pRes[0] = pRes[1] = Abc_Var2Lit( i+1, 0 );
Gia_ObjCopySetTwoArray( pNew, i+1, pRes );
}
assert( pNew->iSuppPi == 0 );
Vec_IntAppend( vSide, vCis );
// transfer back
Gia_ManAppendCo( pNew, iOutLit );
nAndsNew = Gia_ManAndNum(p0);
Lit = Gia_ManDupConeBackObjs( p0, pNew, vSide );
nAndsNew = Gia_ManAndNum(p0) - nAndsNew;
Vec_IntShrink( vSide, Vec_IntSize(vSide) - Vec_IntSize(vCis) );
// printf( "Performed quantification with %6d -> %6d nodes, %3d side-vars, %3d quant-vars, resulting in %5d new nodes. \n",
// Vec_IntSize(vAnds), Gia_ManAndNum(pNew), Vec_IntSize(vSide), Vec_IntSize(vCis), nAndsNew );
Gia_ManStop( pNew );
return Lit;
}
int Gia_ManQuantExist( Gia_Man_t * p0, int iLit, int(*pFuncCiToKeep)(void *, int), void * pData )
{
int Res;
Vec_Int_t * vQuantCis = Vec_IntAlloc( 100 );
Vec_Int_t * vQuantSide = Vec_IntAlloc( 100 );
Vec_Int_t * vQuantAnds = Vec_IntAlloc( 100 );
Gia_ManQuantCollect( p0, Abc_Lit2Var(iLit), pFuncCiToKeep, pData, vQuantCis, vQuantSide, vQuantAnds );
Res = Gia_ManQuantExistInt( p0, iLit, vQuantCis, vQuantSide, vQuantAnds );
Vec_IntFree( vQuantCis );
Vec_IntFree( vQuantSide );
Vec_IntFree( vQuantAnds );
return Res;
}
////////////////////////////////////////////////////////////////////////
/// END OF FILE ///
////////////////////////////////////////////////////////////////////////
ABC_NAMESPACE_IMPL_END

1
src/aig/gia/giaMan.c
View File

@ -119,6 +119,7 @@ void Gia_ManStop( Gia_Man_t * p )
Vec_IntErase( &p->vCopies );
Vec_IntErase( &p->vCopies2 );
Vec_IntErase( &p->vCopiesTwo );
Vec_IntErase( &p->vSuppVars );
Vec_WrdFreeP( &p->vSuppWords );
Vec_IntFreeP( &p->vTtNums );
Vec_IntFreeP( &p->vTtNodes );

1
src/aig/gia/module.make
View File

@ -24,6 +24,7 @@ SRC += src/aig/gia/giaAig.c \
src/aig/gia/giaEra.c \
src/aig/gia/giaEra2.c \
src/aig/gia/giaEsop.c \
src/aig/gia/giaExist.c \
src/aig/gia/giaFalse.c \
src/aig/gia/giaFanout.c \
src/aig/gia/giaForce.c \