[m-rev.] for review: pragma consider_used

[Julien Fischer]

On Mon, 14 Dec 2015, Zoltan Somogyi wrote:

> On Mon, 14 Dec 2015 10:12:30 +1100 (AEDT), Julien Fischer <jfischer at opturion.com> wrote:
>>> I will add public documentation once we have a consensus on
>>> the name.
>>
>> The concept and name are fine by me.
>
> The proposed documentation is attached.

The documentation looks fine.  You should also add an entry to the
NEWS file announcing the addition of the pragma, along with the addition
of --warn-dead-{pred,procs}.

> I intend to commit a diff that uses the new pragma in the compiler
> in two weeks, on dec 28. Please tell me if that is too soon,
> and you haven't installed a compiler with this diff by then.

So far as the ROTDs are concerned it should be fine (the change hasn't
made today's ROTD, but should be in tomorrow's).

Julien.