gcc/testsuite/gcc.dg/20020313-1.c

   1 /* PR 5312
   2    The problem here is that the ia64 scheduler saw a sequence of L L M type
   3    insns, and messed up its internal state on which slot it was issuing
   4    to, and aborted.  */
   5
   6 /* { dg-do compile { target ia64-*-* } } */
   7 /* { dg-options "-O2 -mconstant-gp" } */
   8
   9 typedef unsigned long __u64;
  10 typedef unsigned int __u32;
  11 typedef struct { } spinlock_t;
  12 struct cpuinfo_ia64 {
  13         union {
  14                 struct {
  15                         __u32 irq_count;
  16                         __u32 bh_count;
  17                 } f;
  18                 __u64 irq_and_bh_counts;
  19         } irq_stat;
  20         __u32 softirq_pending;
  21 } __attribute__ ((aligned ((1UL << 14)))) ;
  22 enum
  23 {
  24         TCA_UNSPEC,
  25         TCA_KIND,
  26         TCA_OPTIONS,
  27         TCA_STATS,
  28         TCA_XSTATS,
  29         TCA_RATE,
  30 };
  31 struct tc_stats
  32 {
  33         __u64 bytes;
  34         __u32 packets;
  35         __u32 drops;
  36         __u32 overlimits;
  37         __u32 bps;
  38         __u32 pps;
  39         __u32 qlen;
  40         __u32 backlog;
  41         spinlock_t *lock;
  42 };
  43 struct sk_buff {
  44         unsigned int data_len;
  45         unsigned char *tail;
  46         unsigned char *end;
  47 };
  48 static inline int skb_is_nonlinear(const struct sk_buff *skb)
  49 {
  50         return skb->data_len;
  51 }
  52 static inline int skb_tailroom(const struct sk_buff *skb)
  53 {
  54         return skb_is_nonlinear(skb) ? 0 : skb->end-skb->tail;
  55 }
  56 struct rtattr
  57 {
  58         unsigned short rta_len;
  59         unsigned short rta_type;
  60 };
  61 int qdisc_copy_stats(struct sk_buff *skb, struct tc_stats *st)
  62 {
  63         do { do { (((struct cpuinfo_ia64 *) (0xa000000000000000 + 2*(1UL << 14)))->irq_stat.f.bh_count)++; __asm__ __volatile__("": : :"memory"); } while (0); (void)(st->lock); } while (0);
  64         ({ if (skb_tailroom(skb) < (int)( (((( ((sizeof(struct rtattr))+4 -1) & ~(4 -1) ) + ((char*)&st->lock - (char*)st)))+4 -1) & ~(4 -1) )) goto rtattr_failure; __rta_fill(skb, TCA_STATS, (char*)&st->lock - (char*)st, st); });
  65         do { do { } while(0); do { do { __asm__ __volatile__("": : :"memory"); (((struct cpuinfo_ia64 *) (0xa000000000000000 + 2*(1UL << 14)))->irq_stat.f.bh_count)--; } while (0); if (__builtin_expect((((struct cpuinfo_ia64 *) (0xa000000000000000 + 2*(1UL << 14)))->softirq_pending), 0) && (((struct cpuinfo_ia64 *) (0xa000000000000000 + 2*(1UL << 14)))->irq_stat.f.bh_count) == 0) do_softirq(); } while (0); } while (0);
  66         return 0;
  67 rtattr_failure:
  68         do { do { } while(0); do { do { __asm__ __volatile__("": : :"memory"); (((struct cpuinfo_ia64 *) (0xa000000000000000 + 2*(1UL << 14)))->irq_stat.f.bh_count)--; } while (0); if (__builtin_expect((((struct cpuinfo_ia64 *) (0xa000000000000000 + 2*(1UL << 14)))->softirq_pending), 0) && (((struct cpuinfo_ia64 *) (0xa000000000000000 + 2*(1UL << 14)))->irq_stat.f.bh_count) == 0) do_softirq(); } while (0); } while (0);
  69         return -1;
  70 }