RFR: 8135157: DMB elimination in AArch64 C2 synchronization implementation

[Edward Nevill]

On Tue, 2015-09-08 at 16:20 +0100, Andrew Haley wrote:
> On 09/08/2015 09:49 AM, Andrew Haley wrote:
> > On 09/08/2015 09:36 AM, Edward Nevill wrote:
> >>>
> >> -  ins_encode(aarch64_enc_cmpxchg(mem, oldval, newval));
> >> +  ins_encode(aarch64_enc_cmpxchg_acq(newval, heap_top_ptr));
> >>
> >> I think the original line was correct in this case.
> >
> http://cr.openjdk.java.net/~aph/8135157-2/

This rev looks good.

Tested OK jcstress on 3 different partner HW.

All the best,
Ed.