gcc/testsuite/g++.dg/tree-prof/partition1.C

   1 /* { dg-require-effective-target freorder } */
   2 /* { dg-options "-O2 -freorder-blocks-and-partition" } */
   3
   4 struct A { A () __attribute__((noinline)); ~A () __attribute__((noinline)); };
   5 A::A () { asm volatile ("" : : : "memory"); }
   6 A::~A () { asm volatile ("" : : : "memory"); }
   7
   8 int bar () __attribute__((noinline));
   9 void foo () __attribute__((noinline));
  10
  11 volatile int k, l;
  12
  13 int bar (int i)
  14 {
  15   void *p = __builtin_alloca (i);
  16   asm volatile ("" : : "r" (i), "r" (p) : "memory");
  17   if (k) throw 6;
  18   return ++l;
  19 }
  20
  21 void foo ()
  22 {
  23   A a;
  24   try {
  25     A b;
  26     int i = bar (5);
  27     try { throw 6; } catch (int) {}
  28     if (__builtin_expect (i < 4500, 0)) {
  29       bar (7);
  30       try { bar (8); } catch (long) {}
  31       bar (10);
  32       if (__builtin_expect (i < 0, 0)) {
  33         try { bar (12); } catch (...) {}
  34         bar (16);
  35         bar (122);
  36       } else {
  37         try { bar (bar (7)); } catch (int) {}
  38       }
  39     } else {
  40       try { bar (bar (bar (9))); } catch (...) {}
  41       bar (5);
  42     }
  43   } catch (...) {
  44   }
  45 }
  46
  47 int
  48 main ()
  49 {
  50   int i;
  51   for (i = 0; i < 10000; i++)
  52     foo ();
  53 }