gcc/testsuite/gcc.dg/tree-ssa/cunroll-14.c

   1 /* { dg-do compile } */
   2 /* { dg-options "-O3 -fdump-tree-cunroll-blocks-details" } */
   3 struct a {int a[100];};
   4 void
   5 t(struct a *a)
   6 {
   7   for (int i=0;i<5 && a->a[i];i++)
   8     a->a[i]++;
   9 }
  10 /* { dg-final { scan-tree-dump-times "loop with 4 iterations completely unrolled" 1 "cunroll" } } */
  11 /* { dg-final { scan-tree-dump-not "Invalid sum" "cunroll" } } */
  12 /* { dg-final { scan-tree-dump-times "Loop 1 iterates 4 times" 1 "cunroll" } } */
  13 /* { dg-final { scan-tree-dump-times "Last iteration exit edge was proved true" 1 "cunroll" } } */
  14 /* { dg-final { scan-tree-dump-times "Exit condition of peeled iterations was eliminated" 1 "cunroll" } } */