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/* { dg-do run } */

/* { dg-require-effective-target ssse3 } */

/* { dg-options "-O2 -fno-strict-aliasing -mssse3" } */

#ifndef CHECK_H

#define CHECK_H "ssse3-check.h"

#endif

#ifndef TEST

#define TEST ssse3_test

#endif

#include CHECK_H

#include "ssse3-vals.h"

#include <tmmintrin.h>

#ifndef __AVX__

/* Test the 64-bit form */

static void

ssse3_test_phsubsw (int *i1, int *i2, int *r)

{

  __m64 t1 = *(__m64 *) i1;

  __m64 t2 = *(__m64 *) i2;

  *(__m64 *) r = _mm_hsubs_pi16 (t1, t2);

  _mm_empty ();

}

#endif

/* Test the 128-bit form */

static void

ssse3_test_phsubsw128 (int *i1, int *i2, int *r)

{

  /* Assumes incoming pointers are 16-byte aligned */

  __m128i t1 = *(__m128i *) i1;

  __m128i t2 = *(__m128i *) i2;

  *(__m128i *) r = _mm_hsubs_epi16 (t1, t2);

}

static short

signed_saturate_to_word (int x)

{

  if (x > (int )0x7fff)

    return 0x7fff;

  if (x < (int) 0xffff8000)

    return 0x8000;

  return (short)x;

}

/* 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] = signed_saturate_to_word (s1[2 * i] - s1[2 * i + 1]);

  for (i = 0; i < 4; i++)

    sout[i + 4] = signed_saturate_to_word (s2[2 * i] - s2[2 * i + 1]);

}

static void

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);

#ifndef __AVX__

      /* Run the 64-bit tests */

      ssse3_test_phsubsw (&vals[i + 0], &vals[i + 2], &r[0]);

      ssse3_test_phsubsw (&vals[i + 4], &vals[i + 6], &r[2]);

      fail += chk_128 (ck, r);

#endif

      /* Run the 128-bit tests */

      ssse3_test_phsubsw128 (&vals[i + 0], &vals[i + 4], r);

      fail += chk_128 (ck, r);

    }

  if (fail != 0)

    abort ();

}