gcc/testsuite/gcc.dg/torture/pr85989.c

   1 /* { dg-do run } */
   2
   3 #define N 9
   4
   5 void __attribute__((noipa))
   6 f (double x, double y, double *res)
   7 {
   8   y = -y;
   9   for (int i = 0; i < N; ++i)
  10     {
  11       double tmp = y;
  12       y = x;
  13       x = tmp;
  14       res[i] = i;
  15     }
  16   res[N] = y * y;
  17   res[N + 1] = x;
  18 }
  19
  20 int
  21 main (void)
  22 {
  23   double res[N + 2];
  24   f (10, 20, res);
  25   for (int i = 0; i < N; ++i)
  26     if (res[i] != i)
  27       __builtin_abort ();
  28   if (res[N] != 100 || res[N + 1] != -20)
  29     __builtin_abort ();
  30   return 0;
  31 }