DFA_BUBBLE stuff

[Vladimir Makarov]

Steven Bosscher wrote:

>Hi Vlad,
>
>You added code to haifa-sched to allow it to insert NOPs, but
>insert_schedule_bubbles_p is 0 for all targets.  Also, the target hooks
>TARGET_SCHED_INIT_DFA_BUBBLES, TARGET_SCHED_DFA_BUBBLE
>are not defined by any target.
>
>You merged this code more than two years ago.  Do you have plans to
>start using it, or can I post a patch to remove it?
>
>  
>
Sorry for the delay with the answer.  I was thinking about this. I did 
not know what to do with this code.  I read that somebody was going to 
use it for a gcc port.  But I am not sure about this.

In my opinion, we don't these code now.  It is not used in public gcc 
and it complicates the scheduler. If somebody decided to use it for a 
port, the code could be committed again with the port.

So you can post a patch to remove it.

Thanks, Vlad