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

[Emanuel Peter]

On Wed, 17 Sep 2025 22:26:57 GMT, Vladimir Ivanov <vlivanov at openjdk.org> wrote:

>> @iwanowww
>
> The code in `PhaseMacroExpand::process_users_of_allocation` iterates over direct users of result cast from Allocation nodes. And RF is not special there. Any other case in `PhaseMacroExpand::process_users_of_allocation()` would be affected.

Ah ok. As long as it only iterates over the result cast, that is good :)

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PR Review Comment: https://git.openjdk.org/jdk/pull/25315#discussion_r2358818812