[PATCH, rs6000] Canonicalize split for unordered vector compares

[Bill Schmidt]

On Tue, 2014-02-25 at 11:23 -0500, David Edelsohn wrote:
> On Tue, Feb 25, 2014 at 10:15 AM, Bill Schmidt
> <wschmidt@linux.vnet.ibm.com> wrote:
> > Hi David,
> >
> > Thanks.  I have this upstream for mainline now.  This problem appears to
> > have been introduced in GCC 4.6.  Is it ok to backport this fix to the
> > FSF 4.7 and 4.8 branches?
> 
> This is okay to backport.

Well, I guess the backport won't be necessary.  It looks like the
canonical form was changed in GCC 4.9 for some unknown reason, so
previous releases don't have a bug.  This happened when the 128-bit
expanders were moved from vector.md to rs6000.md last year.  I'll check
around why the canonicalization changed at the same time.

Thanks,
Bill

> 
> Thanks, David
>