[PATCH, v3] ARM: fix inline atomic handling

[Tim Northover]

Hi Phoebe,

On 8 July 2014 18:58, Phoebe Buckheister <llvm at quasiparticle.net> wrote:
> Another attempt at fixing atomic handling. This version includes tests
> that atomics are used on the v7M profile only for widths up to 32 bits,
> and not at all on the v6M profile.

Thanks for persisting with this! I think this looks OK now, and from
what I remember there was a reasonable consensus in the original
thread that opt-out was the right position. So I say go ahead!

I've not noticed you committing before, do you have access or would
you like me to do it for you?

Cheers.

Tim.

(P.S. Very minor point, but we usually try to avoid creating a new
thread with each update. If you fix anything else (please do!),
replying to the previous discussion keeps everything together).