gcc/testsuite/gcc.dg/pr24624.c

   1 /* This used to ICE due to a backend problem on s390.  */
   2
   3 /* { dg-do compile { target s390*-*-* } } */
   4 /* { dg-options "-O1 -mpacked-stack" } */
   5
   6 typedef unsigned int __u32;
   7 typedef struct
   8 {
   9   volatile int counter;
  10 } __attribute__ ((aligned (4))) atomic_t;
  11 static __inline__ __attribute__ ((always_inline))
  12      void atomic_inc (volatile atomic_t * v)
  13 {
  14   (
  15     {
  16     typeof (v->counter) old_val, new_val;
  17   __asm__ __volatile__ (
  18         "   l     %0,0(%3)\n"
  19         "0: lr    %1,%0\n"
  20         "   ar    %1,%4\n"
  21         "   cs    %0,%1,0(%3)\n"
  22         "   jl    0b":
  23         "=&d" (old_val), "=&d" (new_val), "=m" (((atomic_t *) (v))->counter):
  24         "a" (v), "d" (1), "m" (((atomic_t *) (v))->counter):
  25         "cc", "memory");
  26     });
  27 }
  28 extern unsigned long volatile __attribute__ ((section (".data"))) jiffies;
  29 struct inet_peer
  30 {
  31   unsigned long dtime;
  32   atomic_t refcnt;
  33 };
  34 static volatile int peer_total;
  35 int inet_peer_threshold = 65536 + 128;
  36 int inet_peer_minttl = 120 * 100;
  37 int inet_peer_maxttl = 10 * 60 * 100;
  38 static int
  39 cleanup_once (unsigned long ttl)
  40 {
  41   struct inet_peer *p;
  42   if (p != ((void *) 0))
  43     {
  44       if (((
  45              {
  46              1;}
  47            ) && ((long) (jiffies) - (long) (p->dtime + ttl) < 0)))
  48         {
  49           return -1;
  50         }
  51       atomic_inc (&p->refcnt);
  52     }
  53 }
  54 struct inet_peer *
  55 inet_getpeer (__u32 daddr, int create)
  56 {
  57   int i;
  58   int ttl;
  59   if (peer_total >= inet_peer_threshold)
  60     ttl = inet_peer_minttl;
  61   else
  62     ttl =
  63       inet_peer_maxttl - (inet_peer_maxttl -
  64                           inet_peer_minttl) / 100 * peer_total /
  65       inet_peer_threshold * 100;
  66   for (i = 0; i < 30 && !cleanup_once (ttl); i++);
  67 }