[14] RFR: 8246100: Shenandoah: walk roots in more efficient order

[Zhengyu Gu]

Looks good.

-Zhengyu

On 6/3/20 2:28 PM, Aleksey Shipilev wrote:
> Original RFE:
>    https://bugs.openjdk.java.net/browse/JDK-8246100
>    https://cr.openjdk.java.net/~shade/8246100/webrev.14u.01/
> 
> The context in 14u is a bit different. Re-did the patch, by shuffling the lines in the existing
> files. 14u webrev:
>    https://cr.openjdk.java.net/~shade/8246100/webrev.14u.01/
> 
> Testing: hotspot_gc_shenandoah, tier{1,2} with Shenandoah enabled
>