1  /* { dg-do run } */
       2  /* { dg-require-effective-target avx } */
       3  /* { dg-options "-O2 -mavx" } */
       4  
       5  #include "avx-check.h"
       6  
       7  #ifndef OFFSET
       8  #define OFFSET 1
       9  #endif
      10  
      11  #if OFFSET < 0 || OFFSET > 1
      12  #error OFFSET must be within [0..1]
      13  #endif
      14  
      15  void static
      16  avx_test (void)
      17  {
      18    union256d s1;
      19    union128d u;
      20    double e [2];
      21  
      22    s1.x = _mm256_set_pd (2134.3343,1234.635654,453.345635,54646.464356);
      23    u.x = _mm256_extractf128_pd (s1.x, OFFSET);
      24  
      25    __builtin_memcpy (e, s1.a + OFFSET * 2, sizeof e);
      26  
      27    if (check_union128d (u, e))
      28      abort ();
      29  }