gcc/testsuite/gcc.dg/ipa/PR64550.c

   1 /* { dg-do compile } */
   2 /* { dg-options "-O2 -fdump-ipa-icf-details"  } */
   3
   4 struct __hlist_head
   5 {
   6   struct __hlist_node *first;
   7 };
   8
   9 struct __hlist_node
  10 {
  11   struct __hlist_node *next, **pprev;
  12 };
  13
  14 struct __net
  15 {
  16   int ifindex;
  17   struct __hlist_head * dev_index_head;
  18 };
  19
  20 struct __net_device
  21 {
  22   int ifindex;
  23   struct __net *nd_net;
  24   struct __hlist_node index_hlist;
  25 };
  26
  27 __attribute__ ((noinline, noclone))
  28 static struct __hlist_head * __dev_index_hash(struct __net *net,
  29     int ifindex)
  30 {
  31   return &net->dev_index_head[ifindex & 1];
  32 }
  33
  34 __attribute__ ((noinline, noclone))
  35 struct __net_device * __dev_get_by_index(struct __net *net, int ifindex)
  36 {
  37   struct __net_device * dev;
  38   struct __hlist_head * head = __dev_index_hash(net, ifindex);
  39
  40   for (dev = ( { typeof((head)->first) ____ptr = ((head)->first); ____ptr ? ( { const typeof(((typeof(*(dev)) *) 0)->index_hlist) * __mptr = (____ptr); (typeof(*(dev)) *) ((char *)__mptr - __builtin_offsetof(typeof(*(dev)), index_hlist));}): ((void *) 0);});
  41        dev; dev = ( { typeof ((dev)->index_hlist.next) ____ptr = ((dev)->index_hlist.next); ____ptr ? ( { const typeof(((typeof(*(dev)) *) 0)->index_hlist) * __mptr = (____ptr); (typeof(*(dev)) *) ((char *)__mptr - __builtin_offsetof(typeof(*(dev)), index_hlist));}): ((void *) 0);}))
  42     if (dev->ifindex == ifindex)
  43       return dev;
  44
  45   return ((void *)0);
  46 }
  47
  48 __attribute__ ((noinline, noclone))
  49 struct __net_device * dev_get_by_index_rcu(struct __net *net, int ifindex)
  50 {
  51   struct __net_device * dev;
  52   struct __hlist_head * head = __dev_index_hash(net, ifindex);
  53
  54   for (dev = ( { typeof(( { typeof (* ((*((struct __hlist_node **)(&(head)->first))))) * _________p1 = (typeof(*((*((struct __hlist_node **)(&(head)->first))))) *) (*(volatile typeof(((*((struct __hlist_node **)(&(head)->first))))) *)&(((*((struct __hlist_node **)(&(head)->first)))))); do { } while (0);; do { } while (0); ((typeof(*((*((struct __hlist_node **)(&(head)->first))))) *) (_________p1));})) ____ptr = (( { typeof (* ((*((struct __hlist_node **)(&(head)->first))))) * _________p1 = (typeof(*((*((struct __hlist_node **)(&(head)->first))))) *) (*(volatile typeof(((*((struct __hlist_node **)(&(head)->first))))) *)&(((*((struct __hlist_node **)(&(head)->first)))))); do { } while (0);; do { } while (0); ((typeof(*((*((struct __hlist_node **)(&(head)->first))))) *) (_________p1));})); ____ptr ? ( { const typeof(((typeof(*(dev)) *) 0)->index_hlist) * __mptr = (____ptr); (typeof(*(dev)) *) ((char *)__mptr - __builtin_offsetof(typeof(*(dev)), index_hlist));}):((void *) 0);});
  55           dev; dev = ( { typeof(( { typeof (* ((*((struct __hlist_node **)(&(&(dev)->index_hlist)->next))))) * _________p1 = (typeof(*((*((struct __hlist_node **)(&(&(dev)->index_hlist)->next))))) *) (*(volatile typeof(((*((struct __hlist_node **)(&(&(dev)->index_hlist)->next))))) *)&(((*((struct __hlist_node **)(&(&(dev)->index_hlist)->next)))))); do { } while (0);; do { } while (0); ((typeof(*((*((struct __hlist_node **)(&(&(dev)->index_hlist)->next))))) *) (_________p1));})) ____ptr = (( { typeof (* ((*((struct __hlist_node **)(&(&(dev)->index_hlist)->next))))) * _________p1 = (typeof(*((*((struct __hlist_node **)(&(&(dev)->index_hlist)->next))))) *) (*(volatile typeof(((*((struct __hlist_node **)(&(&(dev)->index_hlist)->next))))) *)&(((*((struct __hlist_node **)(&(&(dev)->index_hlist)->next)))))); do { } while (0);; do { } while (0); ((typeof(*((*((struct __hlist_node **)(&(&(dev)->index_hlist)->next))))) *) (_________p1));})); ____ptr ? ( { const typeof(((typeof(*(dev)) *) 0)->index_hlist) * __mptr = (____ptr); (typeof(*(dev)) *) ((char *)__mptr - __builtin_offsetof(typeof(*(dev)), index_hlist));}): ((void *) 0);}))
  56                     if (dev->ifindex == ifindex)
  57                       return dev;
  58   return ((void *)0);
  59 }
  60
  61 __attribute__ ((noinline, noclone))
  62 int foo(struct __net *net)
  63 {
  64   if (!__dev_get_by_index(net, net->ifindex));
  65     return 1;
  66   return 0;
  67 }
  68
  69 int main()
  70 {
  71   return 0;
  72 }
  73
  74 /* { dg-final { scan-ipa-dump "Equal symbols: 0" "icf"  } } */