1 /* { dg-do run } */
2 /* { dg-require-effective-target ssse3 } */
3 /* { dg-options "-O2 -fno-strict-aliasing -mssse3" } */
4
5 #ifndef CHECK_H
6 #define CHECK_H "ssse3-check.h"
7 #endif
8
9 #ifndef TEST
10 #define TEST ssse3_test
11 #endif
12
13 #include CHECK_H
14 #include "ssse3-vals.h"
15
16 #include <tmmintrin.h>
17
18 /* Test the 64-bit form */
19 static void
ssse3_test_phsubw(int * i1,int * i2,int * r)20 ssse3_test_phsubw (int *i1, int *i2, int *r)
21 {
22 __m64 t1 = *(__m64 *) i1;
23 __m64 t2 = *(__m64 *) i2;
24 *(__m64 *) r = _mm_hsub_pi16 (t1, t2);
25 _mm_empty ();
26 }
27
28 /* Test the 128-bit form */
29 static void
ssse3_test_phsubw128(int * i1,int * i2,int * r)30 ssse3_test_phsubw128 (int *i1, int *i2, int *r)
31 {
32 /* Assumes incoming pointers are 16-byte aligned */
33 __m128i t1 = *(__m128i *) i1;
34 __m128i t2 = *(__m128i *) i2;
35
36 *(__m128i *) r = _mm_hsub_epi16 (t1, t2);
37 }
38
39 /* Routine to manually compute the results */
40 static void
compute_correct_result(int * i1,int * i2,int * r)41 compute_correct_result (int *i1, int *i2, int *r)
42 {
43 short *s1 = (short *) i1;
44 short *s2 = (short *) i2;
45 short *sout = (short *) r;
46 int i;
47
48 for (i = 0; i < 4; i++)
49 sout[i] = s1[2 * i] - s1[2 * i + 1];
50 for (i = 0; i < 4; i++)
51 sout[i + 4] = s2[2 * i] - s2[2 * i + 1];
52 }
53
54 static void
TEST(void)55 TEST (void)
56 {
57 int i;
58 int r [4] __attribute__ ((aligned(16)));
59 int ck [4];
60 int fail = 0;
61
62 for (i = 0; i < 256; i += 8)
63 {
64 /* Manually compute the result */
65 compute_correct_result (&vals[i + 0], &vals[i + 4], ck);
66
67 /* Run the 64-bit tests */
68 ssse3_test_phsubw (&vals[i + 0], &vals[i + 2], &r[0]);
69 ssse3_test_phsubw (&vals[i + 4], &vals[i + 6], &r[2]);
70 fail += chk_128 (ck, r);
71
72 /* Run the 128-bit tests */
73 ssse3_test_phsubw128 (&vals[i + 0], &vals[i + 4], r);
74 fail += chk_128 (ck, r);
75 }
76
77 if (fail != 0)
78 abort ();
79 }
80