blob: 5f6c047849b8625f908bc7432b803dff5e671cd3 (
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
|
/* { dg-require-effective-target vect_int } */
/* { dg-require-effective-target vect_shift } */
#include <stdarg.h>
#include "tree-vect.h"
#define N 64
#define C 16
__attribute__ ((noinline)) void
foo (short *src, int *dst)
{
int i;
short b, b0, b1, b2, b3, *s = src;
int *d = dst;
for (i = 0; i < N/4; i++)
{
b0 = *s++;
b1 = *s++;
b2 = *s++;
b3 = *s++;
*d = b0 << C;
d++;
*d = b1 << C;
d++;
*d = b2 << C;
d++;
*d = b3 << C;
d++;
}
s = src;
d = dst;
for (i = 0; i < N; i++)
{
b = *s++;
if (*d != b << C)
abort ();
d++;
}
s = src;
d = dst;
for (i = 0; i < N/4; i++)
{
b0 = *s++;
b1 = *s++;
b2 = *s++;
b3 = *s++;
*d = b0 << C;
d++;
*d = b1 << C;
d++;
*d = b2 << C;
d++;
*d = b3 << 6;
d++;
}
s = src;
d = dst;
for (i = 0; i < N/4; i++)
{
b = *s++;
if (*d != b << C)
abort ();
d++;
b = *s++;
if (*d != b << C)
abort ();
d++;
b = *s++;
if (*d != b << C)
abort ();
d++;
b = *s++;
if (*d != b << 6)
abort ();
d++;
}
}
int main (void)
{
int i;
short in[N];
int out[N];
check_vect ();
for (i = 0; i < N; i++)
{
in[i] = i;
out[i] = 255;
__asm__ volatile ("");
}
foo (in, out);
return 0;
}
/* { dg-final { scan-tree-dump-times "vect_recog_widen_shift_pattern: detected" 8 "vect" { target vect_widen_shift } } } */
/* { dg-final { scan-tree-dump-times "vectorized 2 loops" 1 "vect" } } */
|