gcc/testsuite/gcc.dg/predict-13.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       return 1;
  10     case 2:
  11       return 2;
  12     case 3:
  13       __builtin_unreachable();
  14     case 4:
  15       __builtin_unreachable();
  16     default:
  17       return 5;
  18     }
  19
  20   return 10;
  21 }
  22
  23 /* { dg-final { scan-tree-dump-times "combined heuristics of edge\[^:\]*: 33.3%" 3 "profile_estimate"} } */
  24 /* { dg-final { scan-tree-dump-times "combined heuristics of edge\[^:\]*: 0.0%" 2 "profile_estimate"} } */