gcc/testsuite/gcc.target/i386/sse2-psadbw-1.c

/* { dg-do run } */
/* { dg-options "-O2 -msse2" } */
/* { dg-require-effective-target sse2 } */

#ifndef CHECK_H
#define CHECK_H "sse2-check.h"
#endif

#ifndef TEST
#define TEST sse2_test
#endif

#include CHECK_H

#include <emmintrin.h>

static __m128i
__attribute__((noinline, unused))
test (__m128i s1, __m128i s2)
{
  return _mm_sad_epu8 (s1, s2); 
}

static void
TEST (void)
{
  union128i_ub s1, s2;
  union128i_w u;
  short e[8] = {0};
  unsigned char tmp[16];
  int i;
   
  s1.x = _mm_set_epi8 (1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16);
  s2.x = _mm_set_epi8 (16,15,14,13,12,11,10,9,8,7,6,5,4,3,2,1);
  u.x = test (s1.x, s2.x);

  for (i = 0; i < 16; i++)
    tmp [i] = __builtin_abs (s1.a[i] - s2.a[i]);

  for (i = 0; i < 8; i++)
    e[0] += tmp[i];

  for (i = 8; i < 16; i++)
    e[4] += tmp[i]; 


  if (check_union128i_w (u, e))
    abort ();
}