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
|
/**CFile****************************************************************
FileName [saigScl.c]
SystemName [ABC: Logic synthesis and verification system.]
PackageName [Sequential AIG package.]
Synopsis [Sequential cleanup.]
Author [Alan Mishchenko]
Affiliation [UC Berkeley]
Date [Ver. 1.0. Started - June 20, 2005.]
Revision [$Id: saigScl.c,v 1.00 2005/06/20 00:00:00 alanmi Exp $]
***********************************************************************/
#include "saig.h"
ABC_NAMESPACE_IMPL_START
////////////////////////////////////////////////////////////////////////
/// DECLARATIONS ///
////////////////////////////////////////////////////////////////////////
////////////////////////////////////////////////////////////////////////
/// FUNCTION DEFINITIONS ///
////////////////////////////////////////////////////////////////////////
/**Function*************************************************************
Synopsis [Report registers useless for SEC.]
Description []
SideEffects []
SeeAlso []
***********************************************************************/
void Saig_ManReportUselessRegisters( Aig_Man_t * pAig )
{
Aig_Obj_t * pObj, * pDriver;
int i, Counter1, Counter2;
// set PIO numbers
Aig_ManSetCioIds( pAig );
// check how many POs are driven by a register whose ref count is 1
Counter1 = 0;
Saig_ManForEachPo( pAig, pObj, i )
{
pDriver = Aig_ObjFanin0(pObj);
if ( Saig_ObjIsLo(pAig, pDriver) && Aig_ObjRefs(pDriver) == 1 )
Counter1++;
}
// check how many PIs have ref count 1 and drive a register
Counter2 = 0;
Saig_ManForEachLi( pAig, pObj, i )
{
pDriver = Aig_ObjFanin0(pObj);
if ( Saig_ObjIsPi(pAig, pDriver) && Aig_ObjRefs(pDriver) == 1 )
Counter2++;
}
if ( Counter1 )
printf( "Network has %d (out of %d) registers driving POs.\n", Counter1, Saig_ManRegNum(pAig) );
if ( Counter2 )
printf( "Network has %d (out of %d) registers driven by PIs.\n", Counter2, Saig_ManRegNum(pAig) );
}
/**Function*************************************************************
Synopsis [Report the number of pairs of complemented registers.]
Description []
SideEffects []
SeeAlso []
***********************************************************************/
int Saig_ManReportComplements( Aig_Man_t * p )
{
Aig_Obj_t * pObj, * pFanin;
int i, Counter = 0;
assert( Aig_ManRegNum(p) > 0 );
Aig_ManForEachObj( p, pObj, i )
assert( !pObj->fMarkA );
Aig_ManForEachLiSeq( p, pObj, i )
{
pFanin = Aig_ObjFanin0(pObj);
if ( pFanin->fMarkA )
Counter++;
else
pFanin->fMarkA = 1;
}
// count fanins that have both attributes
Aig_ManForEachLiSeq( p, pObj, i )
{
pFanin = Aig_ObjFanin0(pObj);
pFanin->fMarkA = 0;
}
return Counter;
}
////////////////////////////////////////////////////////////////////////
/// END OF FILE ///
////////////////////////////////////////////////////////////////////////
ABC_NAMESPACE_IMPL_END
|
