[Bug middle-end/89099] Have "-fopt-info" show the original source code context

[dmalcolm at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89099

--- Comment #2 from David Malcolm <dmalcolm at gcc dot gnu.org> ---
(In reply to David Malcolm from comment #1)
> (a) unify the two, so that -fopt-info messages
..."go through the diagnostics subsystem", I meant to write.