summaryrefslogtreecommitdiffstats
path: root/src/opt/rwr/rwr.h
blob: b688fc09e796993c7e125499032382a825483550 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
/**CFile****************************************************************

  FileName    [rwr.h]

  SystemName  [ABC: Logic synthesis and verification system.]

  PackageName [DAG-aware AIG rewriting package.]

  Synopsis    [External declarations.]

  Author      [Alan Mishchenko]
  
  Affiliation [UC Berkeley]

  Date        [Ver. 1.0. Started - June 20, 2005.]

  Revision    [$Id: rwr.h,v 1.00 2005/06/20 00:00:00 alanmi Exp $]

***********************************************************************/
 
#ifndef ABC__opt__rwr__rwr_h
#define ABC__opt__rwr__rwr_h


////////////////////////////////////////////////////////////////////////
///                          INCLUDES                                ///
////////////////////////////////////////////////////////////////////////

#include "base/abc/abc.h"
#include "opt/cut/cut.h"

////////////////////////////////////////////////////////////////////////
///                         PARAMETERS                               ///
////////////////////////////////////////////////////////////////////////



ABC_NAMESPACE_HEADER_START


////////////////////////////////////////////////////////////////////////
///                         BASIC TYPES                              ///
////////////////////////////////////////////////////////////////////////
 
#define RWR_LIMIT  1048576/4  // ((1 << 20) 

typedef struct Rwr_Man_t_   Rwr_Man_t;
typedef struct Rwr_Node_t_  Rwr_Node_t;

struct Rwr_Man_t_
{
    // internal lookups
    int                nFuncs;           // number of four var functions
    unsigned short *   puCanons;         // canonical forms
    char *             pPhases;          // canonical phases
    char *             pPerms;           // canonical permutations
    unsigned char *    pMap;             // mapping of functions into class numbers
    unsigned short *   pMapInv;          // mapping of classes into functions
    char *             pPractical;       // practical NPN classes
    char **            pPerms4;          // four-var permutations
    // node space
    Vec_Ptr_t *        vForest;          // all the nodes
    Rwr_Node_t **      pTable;           // the hash table of nodes by their canonical form
    Vec_Vec_t *        vClasses;         // the nodes of the equivalence classes
    Extra_MmFixed_t *  pMmNode;          // memory for nodes and cuts
    // statistical variables
    int                nTravIds;         // the counter of traversal IDs
    int                nConsidered;      // the number of nodes considered
    int                nAdded;           // the number of nodes added to lists
    int                nClasses;         // the number of NN classes
    // the result of resynthesis
    int                fCompl;           // indicates if the output of FF should be complemented
    void *             pGraph;           // the decomposition tree (temporary)
    Vec_Ptr_t *        vFanins;          // the fanins array (temporary)
    Vec_Ptr_t *        vFaninsCur;       // the fanins array (temporary)
    Vec_Int_t *        vLevNums;         // the array of levels (temporary)
    Vec_Ptr_t *        vNodesTemp;       // the nodes in MFFC (temporary)
    // node statistics
    int                nNodesConsidered;
    int                nNodesRewritten;
    int                nNodesGained;
    int                nNodesBeg;
    int                nNodesEnd;
    int                nScores[222];
    int                nCutsGood;
    int                nCutsBad;
    int                nSubgraphs;
    // runtime statistics
    abctime            timeStart;
    abctime            timeCut;
    abctime            timeRes;
    abctime            timeEval;
    abctime            timeMffc;
    abctime            timeUpdate;
    abctime            timeTotal;
};

struct Rwr_Node_t_ // 24 bytes
{
    int                Id;               // ID 
    int                TravId;           // traversal ID
    short              nScore;
    short              nGain;
    short              nAdded;
    unsigned           uTruth : 16;      // truth table
    unsigned           Volume :  8;      // volume
    unsigned           Level  :  6;      // level
    unsigned           fUsed  :  1;      // mark
    unsigned           fExor  :  1;      // mark
    Rwr_Node_t *       p0;               // first child
    Rwr_Node_t *       p1;               // second child
    Rwr_Node_t *       pNext;            // next in the table
};

// manipulation of complemented attributes
static inline int          Rwr_IsComplement( Rwr_Node_t * p )    { return (int )(((ABC_PTRUINT_T)p) & 01);           }
static inline Rwr_Node_t * Rwr_Regular( Rwr_Node_t * p )         { return (Rwr_Node_t *)((ABC_PTRUINT_T)(p) & ~01);  }
static inline Rwr_Node_t * Rwr_Not( Rwr_Node_t * p )             { return (Rwr_Node_t *)((ABC_PTRUINT_T)(p) ^  01);  }
static inline Rwr_Node_t * Rwr_NotCond( Rwr_Node_t * p, int c )  { return (Rwr_Node_t *)((ABC_PTRUINT_T)(p) ^ (c));  }

////////////////////////////////////////////////////////////////////////
///                      MACRO DEFINITIONS                           ///
////////////////////////////////////////////////////////////////////////

////////////////////////////////////////////////////////////////////////
///                    FUNCTION DECLARATIONS                         ///
////////////////////////////////////////////////////////////////////////

/*=== rwrDec.c ========================================================*/
extern void              Rwr_ManPreprocess( Rwr_Man_t * p );
/*=== rwrEva.c ========================================================*/
extern int               Rwr_NodeRewrite( Rwr_Man_t * p, Cut_Man_t * pManCut, Abc_Obj_t * pNode, int fUpdateLevel, int fUseZeros, int fPlaceEnable );
extern void              Rwr_ScoresClean( Rwr_Man_t * p );
extern void              Rwr_ScoresReport( Rwr_Man_t * p );
/*=== rwrLib.c ========================================================*/
extern void              Rwr_ManPrecompute( Rwr_Man_t * p );
extern Rwr_Node_t *      Rwr_ManAddVar( Rwr_Man_t * p, unsigned uTruth, int fPrecompute );
extern Rwr_Node_t *      Rwr_ManAddNode( Rwr_Man_t * p, Rwr_Node_t * p0, Rwr_Node_t * p1, int fExor, int Level, int Volume );
extern int               Rwr_ManNodeVolume( Rwr_Man_t * p, Rwr_Node_t * p0, Rwr_Node_t * p1 );
extern void              Rwr_ManIncTravId( Rwr_Man_t * p );
/*=== rwrMan.c ========================================================*/
extern Rwr_Man_t *       Rwr_ManStart( int  fPrecompute );
extern void              Rwr_ManStop( Rwr_Man_t * p );
extern void              Rwr_ManPrintStats( Rwr_Man_t * p );
extern void              Rwr_ManPrintStatsFile( Rwr_Man_t * p );
extern void *            Rwr_ManReadDecs( Rwr_Man_t * p );
extern Vec_Ptr_t *       Rwr_ManReadLeaves( Rwr_Man_t * p );
extern int               Rwr_ManReadCompl( Rwr_Man_t * p );
extern void              Rwr_ManAddTimeCuts( Rwr_Man_t * p, abctime Time );
extern void              Rwr_ManAddTimeUpdate( Rwr_Man_t * p, abctime Time );
extern void              Rwr_ManAddTimeTotal( Rwr_Man_t * p, abctime Time );
/*=== rwrPrint.c ========================================================*/
extern void              Rwr_ManPrint( Rwr_Man_t * p );
/*=== rwrUtil.c ========================================================*/
extern void              Rwr_ManWriteToArray( Rwr_Man_t * p );
extern void              Rwr_ManLoadFromArray( Rwr_Man_t * p, int fVerbose );
extern void              Rwr_ManWriteToFile( Rwr_Man_t * p, char * pFileName );
extern void              Rwr_ManLoadFromFile( Rwr_Man_t * p, char * pFileName );
extern void              Rwr_ListAddToTail( Rwr_Node_t ** ppList, Rwr_Node_t * pNode );
extern char *            Rwr_ManGetPractical( Rwr_Man_t * p );



ABC_NAMESPACE_HEADER_END



#endif

////////////////////////////////////////////////////////////////////////
///                       END OF FILE                                ///
////////////////////////////////////////////////////////////////////////