RFR: 8283566: G1: Improve G1BarrierSet::enqueue performance [v2]

Mon Mar 28 11:04:30 UTC 2022

On Fri, 25 Mar 2022 09:11:55 GMT, Thomas Schatzl <tschatzl at openjdk.org> wrote:

> > Thing is, it is not about nullity. It is about whether we have already loaded the oop or not. Maybe `enqueue_loaded`?
> 
> Okay.

After some back and forth, I settled on `enqueue_loc` for new method. This matches some of the related methods we have in Shenandoah. This also simplifies the patch.

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PR: https://git.openjdk.java.net/jdk/pull/7921