blob: 222fbf3e31d2e762bc1c93a7b1fc9c7e11369e5f (
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
|
#include<simdfuncs.h>
#include<stdio.h>
/*
* A function that checks at runtime which simd accelerations are
* available and calls the best one. Falls
* back to plain C implementation if SIMD is not available.
*/
int main(int argc, char **argv) {
float four[4] = {2.0, 3.0, 4.0, 5.0};
const float expected[4] = {3.0, 4.0, 5.0, 6.0};
void (*fptr)(float[4]) = NULL;
const char *type;
int i;
/* Add here. The first matched one is used so put "better" instruction
* sets at the top.
*/
#if HAVE_NEON
if(fptr == NULL && neon_available()) {
fptr = increment_neon;
type = "NEON";
}
#endif
#if HAVE_AVX2
if(fptr == NULL && avx2_available()) {
fptr = increment_avx2;
type = "AVX2";
}
#endif
#if HAVE_AVX
if(fptr == NULL && avx_available()) {
fptr = increment_avx;
type = "AVX";
}
#endif
#if HAVE_SSE42
if(fptr == NULL && sse42_available()) {
fptr = increment_sse42;
type = "SSE42";
}
#endif
#if HAVE_SSE41
if(fptr == NULL && sse41_available()) {
fptr = increment_sse41;
type = "SSE41";
}
#endif
#if HAVE_SSSE3
if(fptr == NULL && ssse3_available()) {
fptr = increment_ssse3;
type = "SSSE3";
}
#endif
#if HAVE_SSE3
if(fptr == NULL && sse3_available()) {
fptr = increment_sse3;
type = "SSE3";
}
#endif
#if HAVE_SSE2
if(fptr == NULL && sse2_available()) {
fptr = increment_sse2;
type = "SSE2";
}
#endif
#if HAVE_SSE
if(fptr == NULL && sse_available()) {
fptr = increment_sse;
type = "SSE";
}
#endif
#if HAVE_MMX
if(fptr == NULL && mmx_available()) {
fptr = increment_mmx;
type = "MMX";
}
#endif
if(fptr == NULL) {
fptr = increment_fallback;
type = "fallback";
}
printf("Using %s.\n", type);
fptr(four);
for(i=0; i<4; i++) {
if(four[i] != expected[i]) {
printf("Increment function failed, got %f expected %f.\n", four[i], expected[i]);
return 1;
}
}
return 0;
}
|
