[patch] Document the restriction on removing a global from a COMDAT

[David Majnemer]

Seems fine to me.  Richard, do you have any comments?

On Tue, Dec 16, 2014 at 2:59 PM, Rafael Espíndola <
rafael.espindola at gmail.com> wrote:
>
> ping
>
> On 6 November 2014 at 08:45, Rafael Espíndola
> <rafael.espindola at gmail.com> wrote:
> > ping
> >
> > On 16 October 2014 15:35, Rafael Espíndola <rafael.espindola at gmail.com>
> wrote:
> >> ping
> >>
> >> On 8 October 2014 10:21, Rafael Espíndola <rafael.espindola at gmail.com>
> wrote:
> >>> The attached patch adds a note about why optimizations cannot drop
> >>> globlas from COMDATs.
> >>>
> >>> Since this is the language ref I made the statement fairly generic, in
> >>> case there is some corner case where an optimization can figure out it
> >>> is actually safe to modify the symbols in a COMDAT.  Let me know if
> >>> you would prefer a more strict statement.
> >>>
> >>> Cheers,
> >>> Rafael
>
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