gcc/testsuite/gcc.dg/tree-prof/unroll-1.c

   1 /* { dg-options "-O3 -fdump-rtl-loop2_unroll-details -funroll-loops -fno-peel-loops" } */
   2 void abort ();
   3
   4 int a[1000];
   5 int
   6 __attribute__ ((noinline))
   7 t()
   8 {
   9   int i;
  10   for (i=0;i<1000;i++)
  11     if (!a[i])
  12       return 1;
  13   abort ();
  14 }
  15 int
  16 main()
  17 {
  18   int i;
  19   for (i=0;i<1000;i++)
  20     t();
  21   return 0;
  22 }
  23 /* { dg-final-use { scan-rtl-dump "considering unrolling loop with constant number of iterations" "loop2_unroll" } } */