RFR: 8372098: Move AccessFlags to InstanceKlass [v4]

[Dean Long]

On Mon, 24 Nov 2025 22:57:18 GMT, Vladimir Ivanov <vlivanov at openjdk.org> wrote:

>> Coleen Phillimore has updated the pull request incrementally with one additional commit since the last revision:
>> 
>>   Reformatting compile.cpp
>
> src/hotspot/share/opto/library_call.cpp line 4100:
> 
>> 4098:     // Other types can report the actual _super.
>> 4099:     // (To verify this code sequence, check the asserts in JVM_IsInterface.)
>> 4100:     if (generate_interface_guard(kls, region) != nullptr)
> 
> BTW why did you decide to change the order of the checks?

I noticed that too.  It is necessary for correctness now.  It is incorrect and unsafe to use generate_interface_guard() on array after this change, because an array klass is not an InstanceKlass.

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PR Review Comment: https://git.openjdk.org/jdk/pull/28371#discussion_r2558168496