summaryrefslogtreecommitdiffstats
path: root/src/aig
diff options
context:
space:
mode:
Diffstat (limited to 'src/aig')
-rw-r--r--src/aig/gia/gia.h11
-rw-r--r--src/aig/gia/giaDup.c238
-rw-r--r--src/aig/gia/giaMan.c2
3 files changed, 251 insertions, 0 deletions
diff --git a/src/aig/gia/gia.h b/src/aig/gia/gia.h
index c8b64a16..4d58992c 100644
--- a/src/aig/gia/gia.h
+++ b/src/aig/gia/gia.h
@@ -216,6 +216,11 @@ struct Gia_Man_t_
// balancing
Vec_Int_t * vSuper; // supergate
Vec_Int_t * vStore; // node storage
+ // existential quantification
+ int iSuppPi; // the number of support variables
+ int nSuppWords; // the number of support words
+ Vec_Wrd_t * vSuppWords; // support information
+ Vec_Int_t vCopiesTwo; // intermediate copies
};
@@ -684,6 +689,11 @@ static inline int Gia_ManAppendAnd( Gia_Man_t * p, int iLit0, int iLit1 )
extern void Gia_ManBuiltInSimPerform( Gia_Man_t * p, int iObj );
Gia_ManBuiltInSimPerform( p, Gia_ObjId( p, pObj ) );
}
+ if ( p->vSuppWords )
+ {
+ extern void Gia_ManQuantSetSuppAnd( Gia_Man_t * p, Gia_Obj_t * pObj );
+ Gia_ManQuantSetSuppAnd( p, pObj );
+ }
return Gia_ObjId( p, pObj ) << 1;
}
static inline int Gia_ManAppendXorReal( Gia_Man_t * p, int iLit0, int iLit1 )
@@ -1247,6 +1257,7 @@ 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 );
diff --git a/src/aig/gia/giaDup.c b/src/aig/gia/giaDup.c
index 977ef42c..2e45fe2b 100644
--- a/src/aig/gia/giaDup.c
+++ b/src/aig/gia/giaDup.c
@@ -21,6 +21,7 @@
#include "gia.h"
#include "misc/tim/tim.h"
#include "misc/vec/vecWec.h"
+#include "misc/util/utilTruth.h"
ABC_NAMESPACE_IMPL_START
@@ -1818,6 +1819,243 @@ Gia_Man_t * Gia_ManDupExist2( Gia_Man_t * p, int iVar )
/**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 )
+{
+ 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];
+ 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 );
+ 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 );
+ Lit = Gia_ManDupConeBack( p0, pNew, vCis );
+ Gia_ManStop( pNew );
+ Vec_IntFree( vCis );
+ return Lit;
+}
+
+
+/**Function*************************************************************
+
Synopsis [Duplicates AIG in the DFS order while putting CIs first.]
Description []
diff --git a/src/aig/gia/giaMan.c b/src/aig/gia/giaMan.c
index a8b03207..5278c5cc 100644
--- a/src/aig/gia/giaMan.c
+++ b/src/aig/gia/giaMan.c
@@ -118,6 +118,8 @@ void Gia_ManStop( Gia_Man_t * p )
Vec_IntFreeP( &p->vTruths );
Vec_IntErase( &p->vCopies );
Vec_IntErase( &p->vCopies2 );
+ Vec_IntErase( &p->vCopiesTwo );
+ Vec_WrdFreeP( &p->vSuppWords );
Vec_IntFreeP( &p->vTtNums );
Vec_IntFreeP( &p->vTtNodes );
Vec_WrdFreeP( &p->vTtMemory );
generated by cgit v1.2.3 (git 2.25.1) at 2024-07-05 00:37:29 +0000