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
|
/**CFile****************************************************************
FileName [bdcInt.h]
SystemName [ABC: Logic synthesis and verification system.]
PackageName [Truth-table-based bi-decomposition engine.]
Synopsis [Internal declarations.]
Author [Alan Mishchenko]
Affiliation [UC Berkeley]
Date [Ver. 1.0. Started - January 15, 2007.]
Revision [$Id: resInt.h,v 1.00 2007/01/15 00:00:00 alanmi Exp $]
***********************************************************************/
#ifndef ABC__aig__bdc__bdcInt_h
#define ABC__aig__bdc__bdcInt_h
////////////////////////////////////////////////////////////////////////
/// INCLUDES ///
////////////////////////////////////////////////////////////////////////
#include "bool/kit/kit.h"
#include "bdc.h"
////////////////////////////////////////////////////////////////////////
/// PARAMETERS ///
////////////////////////////////////////////////////////////////////////
ABC_NAMESPACE_HEADER_START
#define BDC_SCALE 1000 // value used to compute the cost
////////////////////////////////////////////////////////////////////////
/// BASIC TYPES ///
////////////////////////////////////////////////////////////////////////
// network types
typedef enum {
BDC_TYPE_NONE = 0, // 0: unknown
BDC_TYPE_CONST1, // 1: constant 1
BDC_TYPE_PI, // 2: primary input
BDC_TYPE_AND, // 3: AND-gate
BDC_TYPE_OR, // 4: OR-gate (temporary)
BDC_TYPE_XOR, // 5: XOR-gate
BDC_TYPE_MUX, // 6: MUX-gate
BDC_TYPE_OTHER // 7: unused
} Bdc_Type_t;
struct Bdc_Fun_t_
{
int Type; // Const1, PI, AND, XOR, MUX
Bdc_Fun_t * pFan0; // fanin of the given node
Bdc_Fun_t * pFan1; // fanin of the given node
unsigned uSupp; // bit mask of current support
unsigned * puFunc; // the function of the node
Bdc_Fun_t * pNext; // next function with same support
union { int iCopy; // the literal of the node (AIG)
void * pCopy; }; // the function of the node (BDD or AIG)
};
typedef struct Bdc_Isf_t_ Bdc_Isf_t;
struct Bdc_Isf_t_
{
unsigned uSupp; // the complete support of this component
unsigned uUniq; // the unique variables of this component
unsigned * puOn; // on-set
unsigned * puOff; // off-set
};
struct Bdc_Man_t_
{
// external parameters
Bdc_Par_t * pPars; // parameter set
int nVars; // the number of variables
int nWords; // the number of words
int nNodesMax; // the limit on the number of new nodes
int nDivsLimit; // the limit on the number of divisors
// internal nodes
Bdc_Fun_t * pNodes; // storage for decomposition nodes
int nNodesAlloc; // the number of nodes allocated
int nNodes; // the number of all nodes created so far
int nNodesNew; // the number of new AND nodes created so far
Bdc_Fun_t * pRoot; // the root node
// resub candidates
Bdc_Fun_t ** pTable; // hash table of candidates
int nTableSize; // hash table size (1 << nVarsMax)
Vec_Int_t * vSpots; // the occupied spots in the table
// elementary truth tables
Vec_Ptr_t * vTruths; // for const 1 and elementary variables
unsigned * puTemp1; // temporary truth table
unsigned * puTemp2; // temporary truth table
unsigned * puTemp3; // temporary truth table
unsigned * puTemp4; // temporary truth table
// temporary ISFs
Bdc_Isf_t * pIsfOL, IsfOL;
Bdc_Isf_t * pIsfOR, IsfOR;
Bdc_Isf_t * pIsfAL, IsfAL;
Bdc_Isf_t * pIsfAR, IsfAR;
// internal memory manager
Vec_Int_t * vMemory; // memory for internal truth tables
// statistics
int numCalls;
int numNodes;
int numMuxes;
int numAnds;
int numOrs;
int numWeaks;
int numReuse;
// runtime
clock_t timeCache;
clock_t timeCheck;
clock_t timeMuxes;
clock_t timeSupps;
clock_t timeTotal;
};
static inline Bdc_Fun_t * Bdc_FunNew( Bdc_Man_t * p ) { Bdc_Fun_t * pRes; if ( p->nNodes >= p->nNodesAlloc || p->nNodesNew >= p->nNodesMax ) return NULL; pRes = p->pNodes + p->nNodes++; p->nNodesNew++; memset( pRes, 0, sizeof(Bdc_Fun_t) ); return pRes; }
static inline Bdc_Fun_t * Bdc_FunWithId( Bdc_Man_t * p, int Id ) { assert( Id < p->nNodes ); return p->pNodes + Id; }
static inline int Bdc_FunId( Bdc_Man_t * p, Bdc_Fun_t * pFun ) { return pFun - p->pNodes; }
static inline void Bdc_IsfStart( Bdc_Man_t * p, Bdc_Isf_t * pF ) { pF->uSupp = 0; pF->uUniq = 0; pF->puOn = Vec_IntFetch( p->vMemory, p->nWords ); pF->puOff = Vec_IntFetch( p->vMemory, p->nWords ); assert( pF->puOff && pF->puOn ); }
static inline void Bdc_IsfClean( Bdc_Isf_t * p ) { p->uSupp = 0; p->uUniq = 0; }
static inline void Bdc_IsfCopy( Bdc_Isf_t * p, Bdc_Isf_t * q ) { Bdc_Isf_t T = *p; *p = *q; *q = T; }
static inline void Bdc_IsfNot( Bdc_Isf_t * p ) { unsigned * puT = p->puOn; p->puOn = p->puOff; p->puOff = puT; }
////////////////////////////////////////////////////////////////////////
/// MACRO DEFINITIONS ///
////////////////////////////////////////////////////////////////////////
////////////////////////////////////////////////////////////////////////
/// FUNCTION DECLARATIONS ///
////////////////////////////////////////////////////////////////////////
/*=== bdcDec.c ==========================================================*/
extern Bdc_Fun_t * Bdc_ManDecompose_rec( Bdc_Man_t * p, Bdc_Isf_t * pIsf );
extern void Bdc_SuppMinimize( Bdc_Man_t * p, Bdc_Isf_t * pIsf );
extern int Bdc_ManNodeVerify( Bdc_Man_t * p, Bdc_Isf_t * pIsf, Bdc_Fun_t * pFunc );
/*=== bdcTable.c ==========================================================*/
extern Bdc_Fun_t * Bdc_TableLookup( Bdc_Man_t * p, Bdc_Isf_t * pIsf );
extern void Bdc_TableAdd( Bdc_Man_t * p, Bdc_Fun_t * pFunc );
extern void Bdc_TableClear( Bdc_Man_t * p );
extern int Bdc_TableCheckContainment( Bdc_Man_t * p, Bdc_Isf_t * pIsf, unsigned * puTruth );
ABC_NAMESPACE_HEADER_END
#endif
////////////////////////////////////////////////////////////////////////
/// END OF FILE ///
////////////////////////////////////////////////////////////////////////
|
