gcc/testsuite/gcc.c-torture/compile/irreducible-loop.c

   1 void foo (int n, double a, double *b, double *x)
   2 {
   3   int i, j;
   4
   5   if(n <= 0) return;
   6   if (a == 0.0e0) return;
   7
   8   if (a > 5.0)
   9     {
  10       i = 0;
  11       goto sec;
  12     }
  13   for (i = 0; i < 1024; i++)
  14     {
  15       double y = b[i];
  16 sec:
  17       b[i+1] = y + 5.0;
  18       for (j = 0; j < n; j++)
  19         x[j] = x[j] + a;
  20     }
  21 }