On Wed, Jul 4, 2012 at 12:11 AM, Terry Guo <terry....@arm.com> wrote: > > >> -----Original Message----- >> From: pins...@gmail.com [mailto:pins...@gmail.com] On Behalf Of Andrew >> Pinski >> Sent: Wednesday, July 04, 2012 2:58 PM >> To: Terry Guo >> Cc: Richard Guenther; gcc-patches@gcc.gnu.org; tob...@grosser.es; >> seb...@gmail.com; Michael Matz; Diego Novillo; Joey Ye >> Subject: Re: [PATCH] Move Graphite from using PPL over to ISL >> >> On Tue, Jul 3, 2012 at 11:51 PM, Terry Guo <terry....@arm.com> wrote: >> > Hi Richard, >> > >> > What's the plan for 4.7 branch? Will you back port this patch to 4.7 >> and >> > make it use ISL too? I am going to create a upstream GCC SVN branch >> from 4.7 >> > for development on ARM embedded processors. If there will be some big >> > changes for 4.7 in near future in terms of replacing PPL with ISL, I >> will >> > delay the creation of my branch. Thanks. >> >> GCC has a policy of not backporting new features to release branches. >> This can be considered a new feature. In fact what might happen is >> disabling of the graphite support on the 4.7 branch instead. >> >> Is there a reason why you can't do development on the trunk? And then >> support a 4.7 for your own uses? At Cavium, we try to do development >> on an internal tree and then post them upstream. Though in the future >> we would like to do things upstream first and then backport features >> to a release branch that we handle internally. >> > > Hi Tobi and Andrew, > > Thanks for your timely answers. I just saw Sebastian's comments: > > Yes, having GCC only depend on ISL and CLooG-ISL (and not depend > anymore on PPL) is our plan for 4.7. > > from http://gcc.gnu.org/ml/gcc-patches/2011-08/msg01161.html.
Yes but those were made before 4.7 branched and was a release branch. The plan did not happen until almost a year later. Thanks, Andrew Pinski > > As for development model, we do work as Andrew said, upstream first and then > backport features. The 4.7 branch I mentioned is mainly because we want to > make a tool chain release based on 4.7 with some fixes backported from trunk. > > BR, > Terry > > >
