text: /* { dg-do run } */
  /* { dg-options "-mavx2 -O2" } */
  /* { dg-require-effective-target avx2 } */
  
  #include "avx2-check.h"
  
  static void
  compute_movsxbw (char *s, short *r)
  {
    int i;
  
    for (i = 0; i < 16; i++)
      r[i] = s[i];
  }
  
  static void
  avx2_test (void)
  {
    union128i_b s;
    union256i_w res;
    short res_ref[16];
  
    s.x = _mm_set_epi8 (1, 2, 3, 4, 20, -50, 6, 8, 1, 2, 3, 4, -20, 5, 6, 8);
  
    res.x = _mm256_cvtepi8_epi16 (s.x);
  
    compute_movsxbw (s.a, res_ref);
  
    if (check_union256i_w (res, res_ref))
      abort ();
  }
  