[Bug rtl-optimization/54016] loop optimizer: no "branch on count" on s390 anymore since revision 185913

[rguenther at suse dot de]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54016

--- Comment #3 from rguenther at suse dot de <rguenther at suse dot de> 2012-07-20 14:00:23 UTC ---
On Fri, 20 Jul 2012, krebbel at gcc dot gnu.org wrote:

> http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54016
> 
> --- Comment #2 from Andreas Krebbel <krebbel at gcc dot gnu.org> 2012-07-20 13:48:57 UTC ---
> (In reply to comment #1)
> Do I have to do something special now when creating a loop on RTL level?
> Perhaps tell the framework that the loop infos needs to be refreshed or
> something like that?

If you create a new loop on RTL using the cfgloop facility you don't
need to do anything special.  If you only create the insns to form
the loop but not actually create a representation in the loop tree
then yes, you need to do that manually now.

Richard.