RFR(M): 8204524: Unnecessary memory barriers in G1ParScanThreadState::copy_to_survivor_space

[Kim Barrett]

> On Jun 7, 2018, at 2:01 AM, Michihiro Horie <HORIE at jp.ibm.com> wrote:
> 
> Dear all,
> 
> Would you please review the following change?
> 
> Bug: https://bugs.openjdk.java.net/browse/JDK-8204524
> Webrev: http://cr.openjdk.java.net/~mhorie/8204524/webrev.00

I was going to say that this looks good to me.

But then I saw Derek White’s reply about an unexpected performance regression.
I’d like to wait until he reports back.