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
|
/* PR tree-optimization/51581 */
/* { dg-require-effective-target int32plus } */
extern void abort (void);
#define N 4096
int a[N], c[N];
unsigned int b[N], d[N];
__attribute__((noinline, noclone)) void
f1 (void)
{
int i;
for (i = 0; i < N; i++)
c[i] = a[i] / 3;
}
__attribute__((noinline, noclone)) void
f2 (void)
{
int i;
for (i = 0; i < N; i++)
d[i] = b[i] / 3;
}
__attribute__((noinline, noclone)) void
f3 (void)
{
int i;
for (i = 0; i < N; i++)
c[i] = a[i] / 18;
}
__attribute__((noinline, noclone)) void
f4 (void)
{
int i;
for (i = 0; i < N; i++)
d[i] = b[i] / 18;
}
__attribute__((noinline, noclone)) void
f5 (void)
{
int i;
for (i = 0; i < N; i++)
c[i] = a[i] / 19;
}
__attribute__((noinline, noclone)) void
f6 (void)
{
int i;
for (i = 0; i < N; i++)
d[i] = b[i] / 19;
}
#if __SIZEOF_INT__ == 4 && __SIZEOF_LONG_LONG__ == 8
__attribute__((noinline, noclone)) void
f7 (void)
{
int i;
for (i = 0; i < N; i++)
c[i] = (int) ((unsigned long long) (a[i] * 0x55555556LL) >> 32) - (a[i] >> 31);
}
__attribute__((noinline, noclone)) void
f8 (void)
{
int i;
for (i = 0; i < N; i++)
d[i] = ((unsigned int) ((b[i] * 0xaaaaaaabULL) >> 32) >> 1);
}
__attribute__((noinline, noclone)) void
f9 (void)
{
int i;
for (i = 0; i < N; i++)
c[i] = (((int) ((unsigned long long) (a[i] * 0x38e38e39LL) >> 32)) >> 2) - (a[i] >> 31);
}
__attribute__((noinline, noclone)) void
f10 (void)
{
int i;
for (i = 0; i < N; i++)
d[i] = (unsigned int) ((b[i] * 0x38e38e39ULL) >> 32) >> 2;
}
__attribute__((noinline, noclone)) void
f11 (void)
{
int i;
for (i = 0; i < N; i++)
c[i] = (((int) ((unsigned long long) (a[i] * 0x6bca1af3LL) >> 32)) >> 3) - (a[i] >> 31);
}
__attribute__((noinline, noclone)) void
f12 (void)
{
int i;
for (i = 0; i < N; i++)
{
unsigned int tmp = (b[i] * 0xaf286bcbULL) >> 32;
d[i] = (((b[i] - tmp) >> 1) + tmp) >> 4;
}
}
#endif
int
main ()
{
int i;
for (i = 0; i < N; i++)
{
asm ("");
a[i] = i - N / 2;
b[i] = i;
}
a[0] = -__INT_MAX__ - 1;
a[1] = -__INT_MAX__;
a[N - 1] = __INT_MAX__;
b[N - 1] = ~0;
f1 ();
f2 ();
for (i = 0; i < N; i++)
if (c[i] != a[i] / 3 || d[i] != b[i] / 3)
abort ();
f3 ();
f4 ();
for (i = 0; i < N; i++)
if (c[i] != a[i] / 18 || d[i] != b[i] / 18)
abort ();
f5 ();
f6 ();
for (i = 0; i < N; i++)
if (c[i] != a[i] / 19 || d[i] != b[i] / 19)
abort ();
#if __SIZEOF_INT__ == 4 && __SIZEOF_LONG_LONG__ == 8
f7 ();
f8 ();
for (i = 0; i < N; i++)
if (c[i] != a[i] / 3 || d[i] != b[i] / 3)
abort ();
f9 ();
f10 ();
for (i = 0; i < N; i++)
if (c[i] != a[i] / 18 || d[i] != b[i] / 18)
abort ();
f11 ();
f12 ();
for (i = 0; i < N; i++)
if (c[i] != a[i] / 19 || d[i] != b[i] / 19)
abort ();
#endif
return 0;
}
|
