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
      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
      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
      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
      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  }