gcc/testsuite/gcc.dg/pr102087.c

   1 /* { dg-do compile } */
   2 /* { dg-options "-O3" } */
   3
   4 unsigned __attribute__ ((noinline))
   5 foo (int *__restrict__ a, int *__restrict__ b, unsigned l, unsigned n)
   6 {
   7   while (n < ++l)
   8     *a++ = *b++ + 1;
   9   return l;
  10 }
  11
  12 volatile int a[1];
  13 unsigned b;
  14 int c;
  15
  16 int
  17 check ()
  18 {
  19   int d;
  20   for (; b > 1; b++)
  21     for (c = 0; c < 2; c++)
  22       for (d = 0; d < 2; d++)
  23         a[0];
  24   return 0;
  25 }
  26
  27 char **clip_image_gfi_0;
  28 int clip_image_y, clip_image_shift;
  29 void
  30 clip_image ()
  31 {
  32   for (; clip_image_y >= clip_image_shift; clip_image_y++)
  33     clip_image_gfi_0[clip_image_shift]
  34       = clip_image_gfi_0[clip_image_y];
  35 }