gcc/testsuite/gcc.dg/pr53550.c

   1 /* PR tree-optimization/53550 */
   2 /* { dg-do compile } */
   3 /* { dg-options "-O2 -fprefetch-loop-arrays -w" } */
   4
   5 int *
   6 foo (int *x)
   7 {
   8   int *a = x + 10, *b = x, *c = a;
   9   while (b != c)
  10     *--c = *b++;
  11   return x;
  12 }