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* [Bug ipa/103601] New: [12 Regression] ICE in insert_kill, at ipa-modref-tree.c:84
@ 2021-12-07 11:27 rearnsha at gcc dot gnu.org
  2021-12-07 11:34 ` [Bug ipa/103601] " rearnsha at gcc dot gnu.org
                   ` (7 more replies)
  0 siblings, 8 replies; 9+ messages in thread
From: rearnsha at gcc dot gnu.org @ 2021-12-07 11:27 UTC (permalink / raw)
  To: gcc-bugs

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=103601

            Bug ID: 103601
           Summary: [12 Regression] ICE in insert_kill, at
                    ipa-modref-tree.c:84
           Product: gcc
           Version: 12.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: ipa
          Assignee: unassigned at gcc dot gnu.org
          Reporter: rearnsha at gcc dot gnu.org
                CC: marxin at gcc dot gnu.org
  Target Milestone: ---
            Target: arm-none-eabi aarch64-none-elf

The following reduced testcase (from CSiBE) generates an ICE at -O2 or above:

typedef struct { } spinlock_t;
struct list_head {
 struct list_head *next, *prev;
};
struct __wait_queue_head {
 spinlock_t lock;
 struct list_head task_list;
};
typedef struct __wait_queue_head wait_queue_head_t;
static inline void init_waitqueue_head(wait_queue_head_t *q)
{
 q->lock = (spinlock_t) { };
 do { (&q->task_list)->next = (&q->task_list); (&q->task_list)->prev =
(&q->task_list); } while (0);
}
struct timer_list {
 void (*function)(unsigned long);
};
struct rpc_task {
 struct timer_list tk_timer;
 wait_queue_head_t tk_wait;
};
typedef void (*rpc_action)(struct rpc_task *);
static void
rpc_run_timer(struct rpc_task *task)
{
}
inline void
rpc_init_task(struct rpc_task *task, struct rpc_clnt *clnt,
    rpc_action callback, int flags)
{
 task->tk_timer.function = (void (*)(unsigned long)) rpc_run_timer;
 init_waitqueue_head(&task->tk_wait);
}

When compiled with, eg:

-O3 -mcpu=arm1136jf-s -marm -mfpu=vfp -mfloat-abi=softfp -fno-short-enums
-fgnu89-inline -fno-strict-aliasing -fno-common -fomit-frame-pointer
-fno-strength-reduce test.c

^ permalink raw reply	[flat|nested] 9+ messages in thread
end of thread, other threads:[~2021-12-10 21:19 UTC | newest]

Thread overview: 9+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2021-12-07 11:27 [Bug ipa/103601] New: [12 Regression] ICE in insert_kill, at ipa-modref-tree.c:84 rearnsha at gcc dot gnu.org
2021-12-07 11:34 ` [Bug ipa/103601] " rearnsha at gcc dot gnu.org
2021-12-07 12:14 ` rguenth at gcc dot gnu.org
2021-12-07 13:38 ` [Bug ipa/103601] [12 Regression] ICE in insert_kill, at ipa-modref-tree.c:84 since r12-5244-g64f3e71c302b4a13 marxin at gcc dot gnu.org
2021-12-10 10:30 ` roger at nextmovesoftware dot com
2021-12-10 10:43 ` pinskia at gcc dot gnu.org
2021-12-10 10:49 ` hubicka at kam dot mff.cuni.cz
2021-12-10 12:04 ` cvs-commit at gcc dot gnu.org
2021-12-10 21:19 ` roger at nextmovesoftware dot com

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