gcc/testsuite/gcc.dg/predict-1.c

   1 /* { dg-do compile } */
   2 /* { dg-options "-O2 -fdump-tree-profile_estimate --disable-tree-evrp" } */
   3
   4 extern int global;
   5
   6 int bar(int);
   7
   8 void foo (int bound)
   9 {
  10   int i, ret = 0;
  11   for (i = 0; i < bound; i++)
  12     {
  13       if (i > bound)
  14         global += bar (i);
  15       if (i >= bound + 2)
  16         global += bar (i);
  17       if (i > bound - 2)
  18         global += bar (i);
  19       if (i + 2 > bound)
  20         global += bar (i);
  21       if (i == 10)
  22         global += bar (i);
  23     }
  24 }
  25
  26 /* { dg-final { scan-tree-dump-times "guess loop iv compare heuristics of edge\[^:\]*: 36.00%" 4 "profile_estimate"} } */