RE: Is there any plan for "data propagation from Tree SSA to RTL" to be in GCC mainline?

["Bingfeng Mei" <bmei at broadcom dot com>]

I found the the GsoC project and patch here (only 2007)
http://code.google.com/soc/2007/gcc/appinfo.html?csaid=E0FEBB869A5F65A8

Is this patch only for propagating data dependency or does it include propagating alias info as well?

Bingfeng


> -----Original Message-----
> From: Andrey Belevantsev 
> [mailto:andrey.belevantsev@gmail.com] On Behalf Of Andrey Belevantsev
> Sent: 09 November 2008 20:31
> To: Diego Novillo
> Cc: Steven Bosscher; Bingfeng Mei; gcc@gcc.gnu.org; 
> dm@ispras.ru; Daniel Berlin
> Subject: Re: Is there any plan for "data propagation from 
> Tree SSA to RTL" to be in GCC mainline?
> 
> Diego Novillo wrote:
> > On Sun, Nov 9, 2008 at 06:38, Steven Bosscher 
> <stevenb.gcc@gmail.com> wrote:
> > 
> >> Wasn't there a GSoC project for this last year?  And this year?
> >>
> >> It'd be interesting to hear if anything came out of that...
> > 
> > Nothing came of that, unfortunately.
> There are two patches, actually.  The patch of propagating data 
> dependences to RTL is ready and working, it wasn't (at that time) 
> committed just because it was initially completed during stage3.  The 
> patch for propagating alias info wasn't finished within the scope of 
> this year's GSoC, unfortunately, and I take it more as my 
> fault than a 
> student's fault, as I failed to help him locally with 
> organizing his work.
> 
> We are nevertheless trying to put some work into finishing 
> this patch. 
> As it is not completed yet, I don't have a subject to 
> discuss.  I hope 
> that before the next stage1 we'll manage to finish the patches and to 
> unify them before submitting, as the mechanism they use for 
> mapping MEMs 
> to trees is the same.  If we'd not finish the second patch, 
> we'll submit 
> the first one anyways.
> 
> Sorry for not writing this earlier -- I've had a few busy 
> months (mostly 
> finishing and defending ph.d. thesis :)
> 
> Andrey
> 
>