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

   1 /* { dg-do compile } */
   2 /* { dg-options "-O2 -fdump-tree-profile_estimate-blocks-details" } */
   3
   4 void g(void);
   5 void h(void);
   6 void f(int x, int y)
   7 {
   8   if (x) goto A;
   9   if (y) goto B;
  10   return;
  11
  12  A: __attribute__((cold))
  13   g();
  14   return;
  15
  16  B: __attribute__((hot))
  17   h();
  18   return;
  19 }
  20
  21 /* { dg-final { scan-tree-dump-times "hot label heuristics" 1 "profile_estimate" } } */
  22 /* { dg-final { scan-tree-dump-times "cold label heuristics" 1 "profile_estimate" } } */
  23 /* { dg-final { scan-tree-dump-times "block 4, loop depth 0, count 0, freq \[1-4\]\[^0-9\]" 3 "profile_estimate" } } */
  24
  25 /* Note: we're attempting to match some number > 6000, i.e. > 60%.
  26    The exact number ought to be tweekable without having to juggle
  27    the testcase around too much.  */
  28 /* { dg-final { scan-tree-dump-times "block 5, loop depth 0, count 0, freq \[6-9\]\[0-9\]\[0-9\]\[0-9\]" 3 "profile_estimate" } } */