[PATCH] Simplify -fwhole-program documentation
Thu Mar 7 18:19:00 GMT 2013
> On Wed, 6 Mar 2013, Jan Hubicka wrote:
> > >
> > > This removes all encouragement to use -fwhole-program with -flto
> > > from the documentation. As can be seen in PR56533 it can be
> > > most confusing ... instead advise to rely on a linker plugin.
> > >
> > > Ok?
> > Seems resomable thing to do. However I guess a lot of users are still
> > have non-linker-plugin enabled setup. Perhaps we can add a sentence how
> > to figure out if your setup is plugin enabled and thus working well
> > w/o -fwhole-program?
> Do you know one? Apart from 'gcc -flto ... -v 2>&1 | grep --
> I've installed the patch for now.
Hehe, that is precisely what I was thinking about too, except that I would be grepping for plugin switch :)
Perhaps we could print this info in human readable form into gcc --verbose or gcc --version or gcc --help?
With --verbose it is the place we ask people to look into expansion of -march=native & friends, so it may make sense.
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