gcc/testsuite/gcc.target/i386/avx-vperm2f128-256-1.c

   1 /* { dg-do run } */
   2 /* { dg-require-effective-target avx } */
   3 /* { dg-options "-O2 -mavx" } */
   4
   5 #include "avx-check.h"
   6
   7 #define CONTROL 0xCC
   8
   9 void static
  10 avx_test (void)
  11 {
  12   union256 u, s1, s2;
  13   float e [8];
  14
  15   s1.x = _mm256_set_ps (1, 2, 3, 4, 5, 6, 7, 8);
  16   s2.x = _mm256_set_ps (9, 10, 11, 12, 13, 14, 15, 16);
  17   u.x = _mm256_permute2f128_ps (s1.x, s2.x, CONTROL);
  18
  19   switch (CONTROL & 0x3)
  20     {
  21       case 0:
  22         __builtin_memcpy (e, s1.a, 16);
  23         break;
  24       case 1:
  25         __builtin_memcpy (e, s1.a+4, 16);
  26         break;
  27       case 2:
  28         __builtin_memcpy (e, s2.a, 16);
  29         break;
  30       case 3:
  31         __builtin_memcpy (e, s2.a+4, 16);
  32         break;
  33       default:
  34         abort ();
  35     }
  36
  37  switch ((CONTROL & 0xc)>>2)
  38     {
  39       case 0:
  40         __builtin_memcpy (e+4, s1.a, 16);
  41         break;
  42       case 1:
  43         __builtin_memcpy (e+4, s1.a+4, 16);
  44         break;
  45       case 2:
  46         __builtin_memcpy (e+4, s2.a, 16);
  47         break;
  48       case 3:
  49         __builtin_memcpy (e+4, s2.a+4, 16);
  50         break;
  51       default:
  52         abort ();
  53     }
  54
  55   if (CONTROL & (1<<3))
  56     __builtin_memset (e, 0, 16);
  57
  58   if (CONTROL & (1<<7))
  59     __builtin_memset (e+4, 0, 16);
  60
  61   if (check_union256 (u, e))
  62     abort ();
  63 }