gcc/testsuite/gcc.dg/tree-ssa/attr-hotcold-2.c

   1 /* { dg-do compile } */
   2 /* { dg-options "-O2 -fdump-tree-profile_estimate" } */
   3
   4 int v1, v2;
   5 void f(int x, int y)
   6 {
   7   if (x) goto A;
   8   if (y) goto B;
   9   return;
  10
  11  A: __attribute__((cold))
  12   v1 = x;
  13   return;
  14
  15  B: __attribute__((hot))
  16   v2 = y;
  17   return;
  18 }
  19
  20 /* { dg-final { scan-tree-dump-times "hot label heuristics" 1 "profile_estimate" } } */
  21 /* { dg-final { scan-tree-dump-times "cold label heuristics" 1 "profile_estimate" } } */
  22 /* { dg-final { scan-tree-dump-times "combined heuristics: 10.00%" 1 "profile_estimate" } } */
  23
  24 /* Note: we're attempting to match some number > 6000, i.e. > 60%.
  25    The exact number ought to be tweekable without having to juggle
  26    the testcase around too much.  */
  27 /* { dg-final { scan-tree-dump-times "combined heuristics: 90.00%" 1 "profile_estimate" } } */