gcc/testsuite/gcc.c-torture/execute/pr52760.c

   1 /* PR tree-optimization/52760 */
   2
   3 struct T { unsigned short a, b, c, d; };
   4
   5 __attribute__((noinline, noclone)) void
   6 foo (int x, struct T *y)
   7 {
   8   int i;
   9
  10   for (i = 0; i < x; i++)
  11     {
  12       y[i].a = ((0x00ff & y[i].a >> 8) | (0xff00 & y[i].a << 8));
  13       y[i].b = ((0x00ff & y[i].b >> 8) | (0xff00 & y[i].b << 8));
  14       y[i].c = ((0x00ff & y[i].c >> 8) | (0xff00 & y[i].c << 8));
  15       y[i].d = ((0x00ff & y[i].d >> 8) | (0xff00 & y[i].d << 8));
  16     }
  17 }
  18
  19 int
  20 main ()
  21 {
  22   struct T t = { 0x0001, 0x0203, 0x0405, 0x0607 };
  23   foo (1, &t);
  24   if (t.a != 0x0100 || t.b != 0x0302 || t.c != 0x0504 || t.d != 0x0706)
  25     __builtin_abort ();
  26   return 0;
  27 }