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

Tue Nov 11 10:05:19 UTC 2025

On Fri, 7 Nov 2025 23:15:51 GMT, Vladimir Ivanov <vlivanov at openjdk.org> wrote:

>> We call this many times, so not sure if this could explode somehow?
>
> It's hard to place a nested ResourceMark because there are dynamically reallocated data structures with different life cycles. Instead, I moved temporary data structure allocations up in the call chain and made them shared across all RF nodes.

Yeah, neither is very nice. But that sounds reasonable :)

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PR Review Comment: https://git.openjdk.org/jdk/pull/25315#discussion_r2513593891