gcc/testsuite/gcc.dg/predict-14.c

   1 /* { dg-do compile } */
   2 /* { dg-options "-O2 -fdump-tree-profile_estimate" } */
   3
   4 int main(int argc, char **argv)
   5 {
   6   switch (argc)
   7     {
   8     case 1:
   9       __builtin_unreachable();
  10     case 4:
  11       __builtin_unreachable();
  12     default:
  13       __builtin_unreachable();
  14     }
  15
  16   return 10;
  17 }
  18
  19 /* { dg-final { scan-tree-dump-times "predicted to even probabilities" 4 "profile_estimate"} } */