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
|
/* { dg-do run } */
/* { dg-require-effective-target ssse3 } */
/* { dg-options "-O2 -fno-strict-aliasing -mssse3" } */
#include "ssse3-check.h"
#include "ssse3-vals.h"
#include <tmmintrin.h>
/* Test the 64-bit form */
static void
ssse3_test_phsubw (int *i1, int *i2, int *r)
{
__m64 t1 = *(__m64 *) i1;
__m64 t2 = *(__m64 *) i2;
*(__m64 *) r = _mm_hsub_pi16 (t1, t2);
_mm_empty ();
}
/* Test the 128-bit form */
static void
ssse3_test_phsubw128 (int *i1, int *i2, int *r)
{
/* Assumes incoming pointers are 16-byte aligned */
__m128i t1 = *(__m128i *) i1;
__m128i t2 = *(__m128i *) i2;
*(__m128i *) r = _mm_hsub_epi16 (t1, t2);
}
/* Routine to manually compute the results */
static void
compute_correct_result (int *i1, int *i2, int *r)
{
short *s1 = (short *) i1;
short *s2 = (short *) i2;
short *sout = (short *) r;
int i;
for (i = 0; i < 4; i++)
sout[i] = s1[2 * i] - s1[2 * i + 1];
for (i = 0; i < 4; i++)
sout[i + 4] = s2[2 * i] - s2[2 * i + 1];
}
static void
ssse3_test (void)
{
int i;
int r [4] __attribute__ ((aligned(16)));
int ck [4];
int fail = 0;
for (i = 0; i < 256; i += 8)
{
/* Manually compute the result */
compute_correct_result (&vals[i + 0], &vals[i + 4], ck);
/* Run the 64-bit tests */
ssse3_test_phsubw (&vals[i + 0], &vals[i + 2], &r[0]);
ssse3_test_phsubw (&vals[i + 4], &vals[i + 6], &r[2]);
fail += chk_128 (ck, r);
/* Run the 128-bit tests */
ssse3_test_phsubw128 (&vals[i + 0], &vals[i + 4], r);
fail += chk_128 (ck, r);
}
if (fail != 0)
abort ();
}
|