Experiment with the AIG package.

1 files changed, 238 insertions, 0 deletions

diff --git a/src/aig/gia/giaAgi.c b/src/aig/gia/giaAgi.c
new file mode 100644
index 00000000..3acf75a6
--- /dev/null
+++ b/src/aig/gia/giaAgi.c
@@ -0,0 +1,238 @@
+/**CFile****************************************************************
+
+  FileName    [giaAig.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: giaAig.c,v 1.00 2005/06/20 00:00:00 alanmi Exp $]
+
+***********************************************************************/
+
+#include "gia.h"
+
+ABC_NAMESPACE_IMPL_START
+
+
+////////////////////////////////////////////////////////////////////////
+///                        DECLARATIONS                              ///
+////////////////////////////////////////////////////////////////////////
+
+#define AGI_PI ABC_CONST(0xFFFFFFFF00000000) 
+#define AGI_RO ABC_CONST(0xFFFFFFFE00000000) 
+#define AGI_PO ABC_CONST(0xFFFFFFFD00000000) 
+#define AGI_RI ABC_CONST(0xFFFFFFFC00000000) 
+#define AGI_C0 ABC_CONST(0xFFFFFFFBFFFFFFFA) 
+#define AGI_M0 ABC_CONST(0x00000000FFFFFFFF) 
+#define AGI_M1 ABC_CONST(0xFFFFFFFF00000000) 
+
+typedef struct Agi_Man_t_ Agi_Man_t;
+struct Agi_Man_t_
+{
+    char *             pName;       // name of the AIG
+    char *             pSpec;       // name of the input file
+    int                nCap;        // number of objects
+    int                nObjs;       // number of objects
+    int                nNodes;      // number of objects
+    int                nRegs;       // number of registers
+    unsigned           nTravIds;    // number of objects
+    Vec_Int_t          vCis;        // comb inputs
+    Vec_Int_t          vCos;        // comb outputs
+    word *             pObjs;       // objects
+    unsigned *         pThird;      // third input
+    unsigned *         pTravIds;    // traversal IDs
+    unsigned *         pNext;       // next values
+    unsigned *         pTable;      // hash table
+    unsigned *         pCopy;       // hash table
+};
+
+static inline int      Agi_ManObjNum( Agi_Man_t * p )                      { return p->nObjs;                                        } 
+static inline int      Agi_ManCiNum( Agi_Man_t * p )                       { return Vec_IntSize( &p->vCis );                         } 
+static inline int      Agi_ManCoNum( Agi_Man_t * p )                       { return Vec_IntSize( &p->vCos );                         } 
+static inline int      Agi_ManNodeNum( Agi_Man_t * p )                     { return p->nNodes;                                       } 
+
+static inline unsigned Agi_ObjLit0( Agi_Man_t * p, int i )                 { return (unsigned)(p->pObjs[i]);                         } 
+static inline unsigned Agi_ObjLit1( Agi_Man_t * p, int i )                 { return (unsigned)(p->pObjs[i] >> 32);                   } 
+static inline unsigned Agi_ObjLit2( Agi_Man_t * p, int i )                 { return p->pThird[i];                                    } 
+static inline int      Agi_ObjVar0( Agi_Man_t * p, int i )                 { return Agi_ObjLit0(p, i) >> 1;                          } 
+static inline int      Agi_ObjVar1( Agi_Man_t * p, int i )                 { return Agi_ObjLit1(p, i) >> 1;                          } 
+static inline int      Agi_ObjVar2( Agi_Man_t * p, int i )                 { return Agi_ObjLit2(p, i) >> 1;                          } 
+static inline void     Agi_ObjSetLit0( Agi_Man_t * p, int i, unsigned l )  { p->pObjs[i] = (p->pObjs[i] & AGI_M1) | (word)l;         } 
+static inline void     Agi_ObjSetLit1( Agi_Man_t * p, int i, unsigned l )  { p->pObjs[i] = (p->pObjs[i] & AGI_M0) | ((word)l << 32); } 
+static inline void     Agi_ObjSetLit2( Agi_Man_t * p, int i, unsigned l )  { p->pThird[i] = l;                                       }  
+
+static inline int      Agi_ObjIsC0( Agi_Man_t * p, int i )                 { return (i == 0);                                        } 
+static inline int      Agi_ObjIsPi( Agi_Man_t * p, int i )                 { return (p->pObjs[i] & AGI_PI) == AGI_PI;                } 
+static inline int      Agi_ObjIsRo( Agi_Man_t * p, int i )                 { return (p->pObjs[i] & AGI_PI) == AGI_RO;                } 
+static inline int      Agi_ObjIsPo( Agi_Man_t * p, int i )                 { return (p->pObjs[i] & AGI_PI) == AGI_PO;                } 
+static inline int      Agi_ObjIsRi( Agi_Man_t * p, int i )                 { return (p->pObjs[i] & AGI_PI) == AGI_RI;                } 
+static inline int      Agi_ObjIsCi( Agi_Man_t * p, int i )                 { return (p->pObjs[i] & AGI_RO) == AGI_RO;                } 
+static inline int      Agi_ObjIsCo( Agi_Man_t * p, int i )                 { return (p->pObjs[i] & AGI_RO) == AGI_PO;                } 
+static inline int      Agi_ObjIsNode( Agi_Man_t * p, int i )               { return p->pObjs[i] < AGI_C0;                            } 
+static inline int      Agi_ObjIsBuf( Agi_Man_t * p, int i )                { return Agi_ObjLit0(p, i) == Agi_ObjLit1(p, i);          } 
+static inline int      Agi_ObjIsAnd( Agi_Man_t * p, int i )                { return Agi_ObjIsNode(p, i) && Agi_ObjLit0(p, i) < Agi_ObjLit1(p, i);  } 
+static inline int      Agi_ObjIsXor( Agi_Man_t * p, int i )                { return Agi_ObjIsNode(p, i) && Agi_ObjLit0(p, i) > Agi_ObjLit1(p, i);  } 
+static inline int      Agi_ObjIsMux( Agi_Man_t * p, int i )                { return Agi_ObjIsAnd(p, i) && ~Agi_ObjLit2(p, i);        }
+static inline int      Agi_ObjIsMaj( Agi_Man_t * p, int i )                { return Agi_ObjIsXor(p, i) && ~Agi_ObjLit2(p, i);        } 
+
+static inline int Agi_ManAppendObj( Agi_Man_t * p )
+{
+    assert( p->nObjs < p->nCap );
+    return p->nObjs++; // return var
+}
+static inline int Agi_ManAppendCi( Agi_Man_t * p )
+{
+    int iObj = Agi_ManAppendObj( p );
+    p->pObjs[iObj] = AGI_PI | (word)Vec_IntSize(&p->vCis);
+    Vec_IntPush( &p->vCis, iObj );
+    return Abc_Var2Lit( iObj, 0 ); // return lit
+}
+static inline int Agi_ManAppendCo( Agi_Man_t * p, int iLit0 )
+{
+    int iObj = Agi_ManAppendObj( p );
+    p->pObjs[iObj] = AGI_PO | (word)iLit0;
+    Vec_IntPush( &p->vCos, iObj );
+    return Abc_Var2Lit( iObj, 0 ); // return lit
+}
+static inline int Agi_ManAppendAnd( Agi_Man_t * p, int iLit0, int iLit1 )
+{
+    int iObj = Agi_ManAppendObj( p );
+    assert( iLit0 < iLit1 );
+    p->pObjs[iObj] = ((word)iLit1 << 32) | (word)iLit0;
+    p->nNodes++;
+    return Abc_Var2Lit( iObj, 0 ); // return lit
+}
+
+#define Agi_ManForEachCi( p, iCi, i )   Vec_IntForEachEntry( &p->vCis, iCi, i )
+#define Agi_ManForEachCo( p, iCo, i )   Vec_IntForEachEntry( &p->vCos, iCo, i )
+#define Agi_ManForEachObj( p, i )       for ( i = 0; i < Agi_ManObjNum(p); i++ )
+#define Agi_ManForEachObj1( p, i )      for ( i = 1; i < Agi_ManObjNum(p); i++ )
+#define Agi_ManForEachNode( p, i )      for ( i = 1; i < Agi_ManObjNum(p); i++ ) if ( !Agi_ObjIsNode(p, i) ) {} else
+
+////////////////////////////////////////////////////////////////////////
+///                     FUNCTION DEFINITIONS                         ///
+////////////////////////////////////////////////////////////////////////
+
+/**Function*************************************************************
+
+  Synopsis    []
+
+  Description []
+               
+  SideEffects []
+
+  SeeAlso     []
+
+***********************************************************************/
+Agi_Man_t * Agi_ManAlloc( int nCap )
+{
+    Agi_Man_t * p;
+    nCap = Abc_MaxInt( nCap, 16 );
+    p = ABC_CALLOC( Agi_Man_t, 1 );
+    p->nCap     = nCap;
+    p->pObjs    = ABC_CALLOC( word, nCap );
+    p->pTravIds = ABC_CALLOC( unsigned, nCap );
+    p->pObjs[0] = AGI_C0;
+    p->nObjs    = 1;
+    return p;
+}
+void Agi_ManFree( Agi_Man_t * p )
+{
+    ABC_FREE( p->pObjs );
+    ABC_FREE( p->pTravIds );
+    ABC_FREE( p->vCis.pArray );
+    ABC_FREE( p->vCos.pArray );
+    ABC_FREE( p );
+}
+
+/**Function*************************************************************
+
+  Synopsis    []
+
+  Description []
+               
+  SideEffects []
+
+  SeeAlso     []
+
+***********************************************************************/
+Agi_Man_t * Agi_ManFromGia( Gia_Man_t * p )
+{
+    Agi_Man_t * pNew;
+    Gia_Obj_t * pObj;
+    int i;
+    pNew = Agi_ManAlloc( Gia_ManObjNum(p) );
+    Gia_ManForEachObj1( p, pObj, i )
+        if ( Gia_ObjIsAnd(pObj) )
+            pObj->Value = Agi_ManAppendAnd( pNew, Gia_ObjFanin0Copy(pObj), Gia_ObjFanin1Copy(pObj) );
+        else if ( Gia_ObjIsCo(pObj) )
+            pObj->Value = Agi_ManAppendCo( pNew, Gia_ObjFanin0Copy(pObj) );
+        else if ( Gia_ObjIsCi(pObj) )
+            pObj->Value = Agi_ManAppendCi( pNew );
+        else assert( 0 );
+    return pNew;
+}
+
+/**Function*************************************************************
+
+  Synopsis    []
+
+  Description []
+               
+  SideEffects []
+
+  SeeAlso     []
+
+***********************************************************************/
+int Agi_ManSuppSize_rec( Agi_Man_t * p, int i )
+{
+    if ( p->pTravIds[i] == p->nTravIds )
+        return 0;
+    p->pTravIds[i] = p->nTravIds;
+    if ( Agi_ObjIsCi(p, i) )
+        return 1;
+    assert( Agi_ObjIsAnd(p, i) );
+    return Agi_ManSuppSize_rec( p, Agi_ObjVar0(p, i) ) +  Agi_ManSuppSize_rec( p, Agi_ObjVar1(p, i) );
+}
+int Agi_ManSuppSizeOne( Agi_Man_t * p, int i )
+{
+    p->nTravIds++;
+    return Agi_ManSuppSize_rec( p, i );
+}
+int Agi_ManSuppSizeTest( Agi_Man_t * p )
+{
+    abctime clk = Abc_Clock();
+    int i, Counter = 0;
+    Agi_ManForEachNode( p, i )
+        Counter += (Agi_ManSuppSizeOne(p, i) <= 16);
+    printf( "Nodes with small support %d (out of %d)\n", Counter, Agi_ManNodeNum(p) );
+    Abc_PrintTime( 1, "Time", Abc_Clock() - clk );
+    return Counter;
+
+}
+void Agi_ManTest( Gia_Man_t * pGia )
+{
+    extern int Gia_ManSuppSizeTest( Gia_Man_t * p );
+    Agi_Man_t * p;
+    Gia_ManSuppSizeTest( pGia );
+    p = Agi_ManFromGia( pGia );
+    Agi_ManSuppSizeTest( p );
+    Agi_ManFree( p );
+}
+
+////////////////////////////////////////////////////////////////////////
+///                       END OF FILE                                ///
+////////////////////////////////////////////////////////////////////////
+
+
+ABC_NAMESPACE_IMPL_END
+