gcc/testsuite/gcc.target/i386/avx-vextractf128-256-1.c

   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 }