gcc/testsuite/gcc.dg/pr83323.c

   1 /* { dg-do run } */
   2 /* { dg-options "-O3 -floop-unroll-and-jam --param unroll-jam-min-percent=0" } */
   3 int x[1024], y[1024];
   4
   5 void __attribute__((noipa)) foo ()
   6 {
   7   for (int i = 0; i < 1024; ++i)
   8     {
   9       x[i] = 0;
  10       for (int j = 0; j < 1024; ++j)
  11         if (!y[j])
  12           x[i] = 1;
  13     }
  14 }
  15
  16 int main()
  17 {
  18   y[1023] = 1;
  19   foo ();
  20   if (x[1] != 1)
  21     __builtin_abort ();
  22   return 0;
  23 }