RFR: 8290892: C2: Intrinsify Reference.reachabilityFence [v22]

Fri Nov 7 23:20:35 UTC 2025

On Fri, 7 Nov 2025 15:04:23 GMT, Emanuel Peter <epeter at openjdk.org> wrote:

>> I suppose yes, because no GC could have happened since, right?
>
> Could be worth writing that down in a code comment.

> So it does not really make sense to call it a "redundant rf". 

After migration takes place, original RF node does become redundant (but not necessarily in a way detected by `is_redundant_rf`).

Renamed it to `for_removal`. Hope it makes it clearer.

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PR Review Comment: https://git.openjdk.org/jdk/pull/25315#discussion_r2505815955