gcc/testsuite/gcc.target/i386/sse2-vec-2.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   long long res[2];
  21   int masks[2];
  22   int i;
  23
  24   for (i = 0; i < 16; i++)
  25     val1.c[i] = i;
  26
  27   res[0] = __builtin_ia32_vec_ext_v2di ((__v2di)val1.x, 0);
  28   res[1] = __builtin_ia32_vec_ext_v2di ((__v2di)val1.x, 1);
  29
  30   for (i = 0; i < 2; i++)
  31     masks[i] = i;
  32
  33   for (i = 0; i < 2; i++)
  34     if (res[i] != val1.ll [masks[i]])
  35       abort ();
  36 }