gcc/testsuite/gcc.dg/loop-6.c

   1 /* PR optimization/18577 */
   2 /* Origin: Falk Hueffner <falk@debian.org> */
   3
   4 /* { dg-do run } */
   5 /* { dg-options "-O2 -funroll-all-loops" } */
   6
   7 static float tfcos12[3];
   8 __attribute__((noinline)) double f(double x) { return x; }
   9 int g;
  10
  11 int main(void)
  12 {
  13   int i, j;
  14   for (i = 0; i < 1; i++)
  15     tfcos12[i] = 0.5;
  16
  17   for (i = 0; i < 1; i++)
  18     {
  19       tfcos12[i] = 0.5 * f(i);
  20       for (j = 0; j < 12; j++)
  21         g++;
  22     }
  23
  24   return 0;
  25 }