gcc/testsuite/gcc.dg/predict-5.c

   1 /* { dg-do compile } */
   2 /* { dg-options "-O2 -fdump-tree-profile_estimate" } */
   3
   4 extern int global;
   5
   6 int bar (int);
   7
   8 void foo (int base, int bound)
   9 {
  10   int i, ret = 0;
  11   for (i = base; i <= bound; i++)
  12     {
  13       if (i > base)
  14         global += bar (i);
  15       if (i > base + 1)
  16         global += bar (i);
  17       if (i >= base + 3)
  18         global += bar (i);
  19       if (i - 2 >= base)
  20         global += bar (i);
  21     }
  22 }
  23
  24 /* { dg-final { scan-tree-dump-times "guess loop iv compare heuristics of edge\[^:\]*: 98.0%" 4 "profile_estimate"} } */