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 #ifndef __AVX__
19 /* Test the 64-bit form */
20 static void
ssse3_test_phsubw(int * i1,int * i2,int * r)21 ssse3_test_phsubw (int *i1, int *i2, int *r)
22 {
23 __m64 t1 = *(__m64 *) i1;
24 __m64 t2 = *(__m64 *) i2;
25 *(__m64 *) r = _mm_hsub_pi16 (t1, t2);
26 _mm_empty ();
27 }
28 #endif
29
30 /* Test the 128-bit form */
31 static void
ssse3_test_phsubw128(int * i1,int * i2,int * r)32 ssse3_test_phsubw128 (int *i1, int *i2, int *r)
33 {
34 /* Assumes incoming pointers are 16-byte aligned */
35 __m128i t1 = *(__m128i *) i1;
36 __m128i t2 = *(__m128i *) i2;
37
38 *(__m128i *) r = _mm_hsub_epi16 (t1, t2);
39 }
40
41 /* Routine to manually compute the results */
42 static void
compute_correct_result(int * i1,int * i2,int * r)43 compute_correct_result (int *i1, int *i2, int *r)
44 {
45 short *s1 = (short *) i1;
46 short *s2 = (short *) i2;
47 short *sout = (short *) r;
48 int i;
49
50 for (i = 0; i < 4; i++)
51 sout[i] = s1[2 * i] - s1[2 * i + 1];
52 for (i = 0; i < 4; i++)
53 sout[i + 4] = s2[2 * i] - s2[2 * i + 1];
54 }
55
56 static void
TEST(void)57 TEST (void)
58 {
59 int i;
60 int r [4] __attribute__ ((aligned(16)));
61 int ck [4];
62 int fail = 0;
63
64 for (i = 0; i < 256; i += 8)
65 {
66 /* Manually compute the result */
67 compute_correct_result (&vals[i + 0], &vals[i + 4], ck);
68
69 #ifndef __AVX__
70 /* Run the 64-bit tests */
71 ssse3_test_phsubw (&vals[i + 0], &vals[i + 2], &r[0]);
72 ssse3_test_phsubw (&vals[i + 4], &vals[i + 6], &r[2]);
73 fail += chk_128 (ck, r);
74 #endif
75
76 /* Run the 128-bit tests */
77 ssse3_test_phsubw128 (&vals[i + 0], &vals[i + 4], r);
78 fail += chk_128 (ck, r);
79 }
80
81 if (fail != 0)
82 abort ();
83 }
84