[PATCH][PowerPC] Fix BlockAddress access on ppc64

[Ulrich Weigand]

Hal Finkel <hfinkel at anl.gov> wrote on 31.10.2014 02:54:54:

> > I've attached an updated version that implements that solution,
> > and enhances the test to actually verify the correct label name.
> > (See attached file: diff-llvm-ppc64-blockaddress)
> >
> > Still OK for mainline?
>
> Yep, still looks good :-) -- go right ahead.

Checked in as revision 220959.

Thanks,
Ulrich