[PATCH, doc] Don't forbid generating pseudos in define_split

[Andrew Pinski]

On Wed, Jun 23, 2010 at 1:29 PM, Maxim Kuvyrkov <maxim@codesourcery.com> wrote:
> GCC Internals still mentions a restriction from egcs era when new pseudos
> were not allowed to be generated after flow.  This is not longer true and a
> number of architectures successfully generate new pseudos in their
> define_splits.

This restriction was removed when flow.c was removed in January 2006;
it is not just an egcs era restriction.

I would remove the reference to define_expand here because both have
the same restriction after (and during) reload.

Thanks,
Andrew Pinski