RFR: 8290892: C2: Intrinsify Reference.reachabilityFence [v8]

[Emanuel Peter]

On Fri, 12 Sep 2025 13:26:08 GMT, Emanuel Peter <epeter at openjdk.org> wrote:

>> Loop-invariant code motion is one example. Do you want me to add it to the comment?
>> 
>> After parsing is over, the IR is in valid state, but loop optimizations are the primary reason why it can be broken later.
>
> Just make sure that this information is in the code comments - I'm not just asking for myself here ;)

Yes, maybe say what the general problem is, and make a concrete example. I'm currently a bit struggling to think of one that is relevant.

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PR Review Comment: https://git.openjdk.org/jdk/pull/25315#discussion_r2344331771