[Libre-soc-isa] [Bug 900] Continue work on Atomics extension

[bugzilla-daemon at libre-soc.org]

https://bugs.libre-soc.org/show_bug.cgi?id=900

--- Comment #2 from Jacob Lifshay <programmerjake at gmail.com> ---
(In reply to Jacob Lifshay from comment #1)
> I just thought of a way to add atomic ops that don't need memory model work:
> we simply define them in terms of the existing instruction sequences for the
> atomic ops.

this saves us a lot of work and saves OPF and IBM a lot of work verifying the
new instructions work in the memory model, the only problem is they may be
slower than necessary for C++11's memory model.

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