gcc/testsuite/gcc.dg/predict-20.c

   1 /* PR tree-optimization/86925 */
   2
   3 /* { dg-do compile } */
   4 /* { dg-options "-O2 -fdump-tree-profile_estimate" } */
   5
   6 int a, b;
   7
   8 void
   9 c ()
  10 {
  11   for (;;)
  12     {
  13       if (__builtin_expect (b < 0, 0))
  14         break;
  15       if (__builtin_expect (a, 1))
  16         break;
  17     }
  18   int d = b < 0;
  19   /* We fail to apply __builtin_expect heuristics here.  Se PR109210.  */
  20   if (__builtin_expect (d, 0))
  21     asm("");
  22 }
  23
  24 /* { dg-final { scan-tree-dump-times "__builtin_expect heuristics of edge" 2 "profile_estimate" } } */