RFR: Factor out storeval barrier from read barriers

[Aleksey Shipilev]

On 08/28/2017 04:44 PM, Roman Kennke wrote:
> OK. But it is not independent in this patch: turning off RB would also turn off the SVB. (Or, with
> upcoming partial GC, same with WBs). Would it be more useful to have them more independent?

I think it would be useful to separate. RB is our major overhead dominator, would be interesting to
see if SVB is a significant part of it, and thus an appealing optimization target (as you said in
the previous note).

Thanks,
-Aleksey