Fix PR57268

[Jeff Law]

On 06/01/2013 06:55 AM, Jakub Jelinek wrote:
> On Sat, Jun 01, 2013 at 10:11:24AM +0200, Jakub Jelinek wrote:
>> On Sat, Jun 01, 2013 at 08:39:58AM +0400, Dinar Temirbulatov wrote:
>>> I am investigating the problem.
>>
>> I'd guess you don't want to flush on DEBUG_INSN_Ps, because then you'd flush
>> differently between -g and -g0.  So perhaps something like:
>
> Now bootstrapped/regtested on x86_64-linux and i686-linux.  I see you've
> already reverted in the mean time, so ok for trunk this way?
>
> 2013-06-01  Jakub Jelinek  <jakub@redhat.com>
>
> 	PR rtl-optimization/57268
> 	* sched-deps.c (sched_analyze_2): Don't flush_pedning_lists
> 	if DEBUG_INSN_P (insn).
>
> 	Reapply
> 	2013-05-31  Dinar Temirbulatov  <dinar@kugelworks.com>
>
> 	PR rtl-optimization/57268
> 	* sched-deps.c (sched_analyze_2): Flush dependence lists if
> 	the sum of the read and write lists exceeds MAX_PENDING_LIST_LENGTH.
Yes, this way is fine.
jeff