volatile correctness: combine vs. target.md

[Richard Guenther]

On Sat, Dec 3, 2011 at 7:56 PM, Richard Henderson <rth@redhat.com> wrote:
> On 12/03/2011 06:30 AM, Richard Guenther wrote:
>> Not if you look at the respective gimple level dependency routines
>> in tree-ssa-alias.c, OTOH tree-data-ref.c simply refuses to handle
>> volatile references at all.
>
> That's something we'd better fix, then, regardless of whether
> some pass currently refuses to handle them.

I'll prepare a patch.

Richard.