gcc/testsuite/gcc.target/i386/sse2-vec-3.c

   1 /* { dg-do run } */
   2 /* { dg-options "-O2 -msse2" } */
   3 /* { dg-require-effective-target sse2 } */
   4
   5 #include "sse2-check.h"
   6
   7 #include <emmintrin.h>
   8
   9 static void
  10 sse2_test (void)
  11 {
  12   union
  13     {
  14       __m128i x;
  15       char c[16];
  16       short s[8];
  17       int i[4];
  18       long long ll[2];
  19     } val1;
  20   int res[4];
  21   int masks[4];
  22   int i;
  23
  24   for (i = 0; i < 16; i++)
  25     val1.c[i] = i;
  26
  27   res[0] = __builtin_ia32_vec_ext_v4si ((__v4si)val1.x, 0);
  28   res[1] = __builtin_ia32_vec_ext_v4si ((__v4si)val1.x, 1);
  29   res[2] = __builtin_ia32_vec_ext_v4si ((__v4si)val1.x, 2);
  30   res[3] = __builtin_ia32_vec_ext_v4si ((__v4si)val1.x, 3);
  31
  32   for (i = 0; i < 4; i++)
  33     masks[i] = i;
  34
  35   for (i = 0; i < 4; i++)
  36     if (res[i] != val1.i [masks[i]])
  37       abort ();
  38 }