Version abc90215

1 files changed, 346 insertions, 0 deletions

diff --git a/src/aig/gia/giaFrames.c b/src/aig/gia/giaFrames.c
new file mode 100644
index 00000000..e99ef514
--- /dev/null
+++ b/src/aig/gia/giaFrames.c
@@ -0,0 +1,346 @@
+/**CFile****************************************************************
+
+  FileName    [giaFrames.c]
+
+  SystemName  [ABC: Logic synthesis and verification system.]
+
+  PackageName [Scalable AIG package.]
+
+  Synopsis    [Timeframe unrolling.]
+
+  Author      [Alan Mishchenko]
+  
+  Affiliation [UC Berkeley]
+
+  Date        [Ver. 1.0. Started - June 20, 2005.]
+
+  Revision    [$Id: giaFrames.c,v 1.00 2005/06/20 00:00:00 alanmi Exp $]
+
+***********************************************************************/
+
+#include "gia.h"
+
+////////////////////////////////////////////////////////////////////////
+///                        DECLARATIONS                              ///
+////////////////////////////////////////////////////////////////////////
+
+typedef struct Gia_ManFra_t_ Gia_ManFra_t;
+struct Gia_ManFra_t_
+{
+    Gia_ParFra_t *  pPars;  // parameters
+    Gia_Man_t *     pAig;   // AIG to unroll
+    Vec_Ptr_t *     vIns;   // inputs of each timeframe    
+    Vec_Ptr_t *     vAnds;  // nodes of each timeframe    
+    Vec_Ptr_t *     vOuts;  // outputs of each timeframe    
+};
+
+////////////////////////////////////////////////////////////////////////
+///                     FUNCTION DEFINITIONS                         ///
+////////////////////////////////////////////////////////////////////////
+
+/**Function*************************************************************
+
+  Synopsis    [This procedure sets default parameters.]
+
+  Description []
+               
+  SideEffects []
+
+  SeeAlso     []
+
+***********************************************************************/
+void Gia_ManFraSetDefaultParams( Gia_ParFra_t * p )
+{
+    memset( p, 0, sizeof(Gia_ParFra_t) );
+    p->nFrames      =  32;    // the number of frames to unroll
+    p->fInit        =   0;    // initialize the timeframes
+    p->fVerbose     =   0;    // enables verbose output
+}
+
+/**Function*************************************************************
+
+  Synopsis    [Creates manager.]
+
+  Description []
+               
+  SideEffects []
+
+  SeeAlso     []
+
+***********************************************************************/
+Gia_ManFra_t * Gia_ManFraStart( Gia_Man_t * pAig, Gia_ParFra_t * pPars )  
+{ 
+    Gia_ManFra_t * p;
+    p = ABC_ALLOC( Gia_ManFra_t, 1 );
+    memset( p, 0, sizeof(Gia_ManFra_t) );
+    p->pAig  = pAig;
+    p->pPars = pPars;
+    return p;
+}
+
+/**Function*************************************************************
+
+  Synopsis    [Deletes manager.]
+
+  Description []
+               
+  SideEffects []
+
+  SeeAlso     []
+
+***********************************************************************/
+void Gia_ManFraStop( Gia_ManFra_t * p )  
+{
+    Vec_VecFree( (Vec_Vec_t *)p->vIns );
+    Vec_VecFree( (Vec_Vec_t *)p->vAnds );
+    Vec_VecFree( (Vec_Vec_t *)p->vOuts );
+    ABC_FREE( p );
+}
+
+/**Function*************************************************************
+
+  Synopsis    [Computes supports of all timeframes.]
+
+  Description []
+               
+  SideEffects []
+
+  SeeAlso     []
+
+***********************************************************************/
+void Gia_ManFraSupports( Gia_ManFra_t * p )
+{
+    Vec_Int_t * vIns = NULL, * vAnds, * vOuts;
+    Gia_Obj_t * pObj;
+    int f, i;
+    p->vIns  = Vec_PtrStart( p->pPars->nFrames );
+    p->vAnds = Vec_PtrStart( p->pPars->nFrames );
+    p->vOuts = Vec_PtrStart( p->pPars->nFrames );
+    Gia_ManResetTravId( p->pAig );
+    for ( f = p->pPars->nFrames - 1; f >= 0; f-- )
+    {
+        vOuts = Gia_ManCollectPoIds( p->pAig );
+        if ( vIns )
+        Gia_ManForEachObjVec( vIns, p->pAig, pObj, i )
+            if ( Gia_ObjIsRo(p->pAig, pObj) )
+                Vec_IntPush( vOuts, Gia_ObjId( p->pAig, Gia_ObjRoToRi(p->pAig, pObj) ) );
+        vIns = Vec_IntAlloc( 100 );
+        Gia_ManCollectCis( p->pAig, Vec_IntArray(vOuts), Vec_IntSize(vOuts), vIns );
+        vAnds = Vec_IntAlloc( 100 );
+        Gia_ManCollectAnds( p->pAig, Vec_IntArray(vOuts), Vec_IntSize(vOuts), vAnds );
+        Vec_PtrWriteEntry( p->vIns,  f, vIns );
+        Vec_PtrWriteEntry( p->vAnds, f, vAnds );
+        Vec_PtrWriteEntry( p->vOuts, f, vOuts );
+    }
+}
+
+/**Function*************************************************************
+
+  Synopsis    [Moves the first nRegs entries to the end.]
+
+  Description []
+               
+  SideEffects []
+
+  SeeAlso     []
+
+***********************************************************************/
+void Gia_ManFraTransformCis( Gia_Man_t * pAig, Vec_Int_t * vCis )
+{
+    int i, k = 0, Entry;
+    Vec_IntForEachEntryStop( vCis, Entry, i, Gia_ManRegNum(pAig) )
+        assert( Entry == i+1 );
+    Vec_IntForEachEntryStart( vCis, Entry, i, Gia_ManRegNum(pAig) )
+        Vec_IntWriteEntry( vCis, k++, Entry );
+    for ( i = 0; i < Gia_ManRegNum(pAig); i++ )
+        Vec_IntWriteEntry( vCis, k++, i+1 );
+    assert( k == Vec_IntSize(vCis) );
+}
+
+/**Function*************************************************************
+
+  Synopsis    []
+
+  Description []
+               
+  SideEffects []
+
+  SeeAlso     []
+
+***********************************************************************/
+Gia_Man_t * Gia_ManFramesInit( Gia_Man_t * pAig, Gia_ParFra_t * pPars )
+{
+    int fUseAllPis = 1;
+    Gia_Man_t * pFrames, * pTemp;
+    Gia_ManFra_t * p;
+    Gia_Obj_t * pObj;
+    Vec_Int_t * vIns, * vAnds, * vOuts;
+    int i, f;
+    p = Gia_ManFraStart( pAig, pPars );
+    Gia_ManFraSupports( p );
+    pFrames = Gia_ManStart( Vec_VecSizeSize((Vec_Vec_t*)p->vIns)+
+        Vec_VecSizeSize((Vec_Vec_t*)p->vAnds)+Vec_VecSizeSize((Vec_Vec_t*)p->vOuts) );
+    pFrames->pName = Aig_UtilStrsav( pAig->pName );
+    Gia_ManHashAlloc( pFrames );
+    Gia_ManConst0(pAig)->Value = 0;
+    for ( f = 0; f < pPars->nFrames; f++ )
+    {
+        vIns  = Vec_PtrEntry( p->vIns,  f );
+        vAnds = Vec_PtrEntry( p->vAnds, f );
+        vOuts = Vec_PtrEntry( p->vOuts, f );
+        if ( pPars->fVerbose )
+            printf( "Frame %3d : CI = %6d. AND = %6d. CO = %6d.\n", 
+            f, Vec_IntSize(vIns), Vec_IntSize(vAnds), Vec_IntSize(vOuts) );
+        if ( fUseAllPis )
+        {
+            Gia_ManForEachPi( pAig, pObj, i )
+                pObj->Value = Gia_ManAppendCi( pFrames );
+            if ( f == 0 )
+            {
+                Gia_ManForEachObjVec( vIns, pAig, pObj, i )
+                {
+                    assert( Gia_ObjIsCi(pObj) );
+                    if ( !Gia_ObjIsPi(pAig, pObj) )
+                        pObj->Value = 0;
+                }
+            }
+            else
+            {
+                Gia_ManForEachObjVec( vIns, pAig, pObj, i )
+                {
+                    assert( Gia_ObjIsCi(pObj) );
+                    if ( !Gia_ObjIsPi(pAig, pObj) )
+                        pObj->Value = Gia_ObjRoToRi(pAig, pObj)->Value;
+                }
+            }
+        }
+        else
+        {
+            if ( f == 0 )
+            {
+                Gia_ManForEachObjVec( vIns, pAig, pObj, i )
+                {
+                    assert( Gia_ObjIsCi(pObj) );
+                    if ( Gia_ObjIsPi(pAig, pObj) )
+                        pObj->Value = Gia_ManAppendCi( pFrames );
+                    else
+                        pObj->Value = 0;
+                }
+            }
+            else
+            {
+                Gia_ManForEachObjVec( vIns, pAig, pObj, i )
+                {
+                    assert( Gia_ObjIsCi(pObj) );
+                    if ( Gia_ObjIsPi(pAig, pObj) )
+                        pObj->Value = Gia_ManAppendCi( pFrames );
+                    else
+                        pObj->Value = Gia_ObjRoToRi(pAig, pObj)->Value;
+                }
+            }
+        }
+        Gia_ManForEachObjVec( vAnds, pAig, pObj, i )
+        {
+            assert( Gia_ObjIsAnd(pObj) );
+            pObj->Value = Gia_ManHashAnd( pFrames, Gia_ObjFanin0Copy(pObj), Gia_ObjFanin1Copy(pObj) );
+        }
+        Gia_ManForEachObjVec( vOuts, pAig, pObj, i )
+        {
+            assert( Gia_ObjIsCo(pObj) );
+            if ( Gia_ObjIsPo(pAig, pObj) )
+                pObj->Value = Gia_ManAppendCo( pFrames, Gia_ObjFanin0Copy(pObj) );
+            else
+                pObj->Value = Gia_ObjFanin0Copy(pObj);
+        }
+    }
+    Gia_ManFraStop( p );
+    Gia_ManHashStop( pFrames );
+    if ( Gia_ManCombMarkUsed(pFrames) < Gia_ManAndNum(pFrames) )
+    {
+        pFrames = Gia_ManDupMarked( pTemp = pFrames );
+        if ( pPars->fVerbose )
+            printf( "Before cleanup = %d nodes. After cleanup = %d nodes.\n", 
+                Gia_ManAndNum(pTemp), Gia_ManAndNum(pFrames) );
+        Gia_ManStop( pTemp );
+    }
+    else if ( pPars->fVerbose )
+            printf( "Before cleanup = %d nodes. After cleanup = %d nodes.\n", 
+                Gia_ManAndNum(pFrames), Gia_ManAndNum(pFrames) );
+    return pFrames;
+}
+
+/**Function*************************************************************
+
+  Synopsis    []
+
+  Description []
+               
+  SideEffects []
+
+  SeeAlso     []
+
+***********************************************************************/
+Gia_Man_t * Gia_ManFrames( Gia_Man_t * pAig, Gia_ParFra_t * pPars )
+{
+    Gia_Man_t * pFrames, * pTemp;
+    Gia_Obj_t * pObj;
+    int i, f;
+    assert( Gia_ManRegNum(pAig) > 0 );
+    assert( pPars->nFrames > 0 );
+    if ( pPars->fInit )
+        return Gia_ManFramesInit( pAig, pPars );
+    pFrames = Gia_ManStart( pPars->nFrames * Gia_ManObjNum(pAig) );
+    pFrames->pName = Aig_UtilStrsav( pAig->pName );
+    Gia_ManHashAlloc( pFrames );
+    Gia_ManConst0(pAig)->Value = 0;
+    for ( f = 0; f < pPars->nFrames; f++ )
+    {
+        if ( f == 0 )
+        {
+            Gia_ManForEachRo( pAig, pObj, i )
+                pObj->Value = Gia_ManAppendCi( pFrames );
+        }
+        else
+        {
+            Gia_ManForEachRo( pAig, pObj, i )
+                pObj->Value = Gia_ObjRoToRi( pAig, pObj )->Value;
+        }
+        Gia_ManForEachPi( pAig, pObj, i )
+            pObj->Value = Gia_ManAppendCi( pFrames );
+        Gia_ManForEachAnd( pAig, pObj, i )
+            pObj->Value = Gia_ManHashAnd( pFrames, Gia_ObjFanin0Copy(pObj), Gia_ObjFanin1Copy(pObj) );
+        Gia_ManForEachPo( pAig, pObj, i )
+            pObj->Value = Gia_ManAppendCo( pFrames, Gia_ObjFanin0Copy(pObj) );
+        if ( f == pPars->nFrames - 1 )
+        {
+            Gia_ManForEachRi( pAig, pObj, i )
+                pObj->Value = Gia_ManAppendCo( pFrames, Gia_ObjFanin0Copy(pObj) );
+        }
+        else
+        {
+            Gia_ManForEachRi( pAig, pObj, i )
+                pObj->Value = Gia_ObjFanin0Copy(pObj);
+        }
+    }
+    Gia_ManHashStop( pFrames );
+    Gia_ManFraTransformCis( pAig, pFrames->vCis );
+    Gia_ManSetRegNum( pFrames, Gia_ManRegNum(pAig) );
+    if ( Gia_ManCombMarkUsed(pFrames) < Gia_ManAndNum(pFrames) )
+    {
+        pFrames = Gia_ManDupMarked( pTemp = pFrames );
+        if ( pPars->fVerbose )
+            printf( "Before cleanup = %d nodes. After cleanup = %d nodes.\n", 
+                Gia_ManAndNum(pTemp), Gia_ManAndNum(pFrames) );
+        Gia_ManStop( pTemp );
+    }
+    else if ( pPars->fVerbose )
+            printf( "Before cleanup = %d nodes. After cleanup = %d nodes.\n", 
+                Gia_ManAndNum(pFrames), Gia_ManAndNum(pFrames) );
+    return pFrames;
+}
+
+////////////////////////////////////////////////////////////////////////
+///                       END OF FILE                                ///
+////////////////////////////////////////////////////////////////////////
+
+