Extension elimination pass breaks SPU (Fw: spu gcc-4.5 linaro build failure)

[Ulrich Weigand]

Ulrich Weigand/Germany/IBM wrote on 12/20/2010 06:01:21 PM:
> Mark Mitchell <mark at codesourcery.com> wrote:
> > On 12/20/2010 8:35 AM, Ulrich Weigand wrote:
> > > Now, I guess there's two ways forward:  either the outcome of the
ongoing
> > > discussions on gcc-patches is that it is in fact not a good idea to
> > > generate such sets, and the EE pass is subsequently rewritten to
avoid
> > > them; or else, if those instructions are considered valid, I'll have
to
> > > extend the SPU move expander to handle them.   Thoughts?
> >
> > I haven't participated in the upstream discussion -- I'm way behind on
> > that list :-( :-( -- but I think such sets should be considered valid.
>
> OK, I'll have a look at fixing the SPU back-end then.

I've now fixed this problem in the back-end upstream:
http://gcc.gnu.org/ml/gcc-patches/2010-12/msg01694.html

I've also created a back-port to Linaro GCC 4.5 and proposed the
branch for merge; you can find the details at:
https://bugs.launchpad.net/gcc-linaro/4.5/+bug/693425


Mit freundlichen Gruessen / Best Regards

Ulrich Weigand

--
  Dr. Ulrich Weigand | Phone: +49-7031/16-3727
  STSM, GNU compiler and toolchain for Linux on System z and Cell/B.E.
  IBM Deutschland Research & Development GmbH
  Vorsitzender des Aufsichtsrats: Martin Jetter | Geschäftsführung: Dirk
Wittkopp
  Sitz der Gesellschaft: Böblingen | Registergericht: Amtsgericht
Stuttgart, HRB 243294