RFR(s): 8013171: G1: C1 x86_64 barriers use 32-bit accesses to 64-bit PtrQueue::_index

[Per Liden]

Thanks for reviewing Roland.

/Per

On 2015-05-04 11:12, Roland Westrelin wrote:
>> Thomas/Roland, are you ok with the latest version?
>
> Yes, that looks good to me.
>
> Roland.
>