RFR: 8366584: Add an InstanceKlass::super() method that returns InstanceKlass*

[Coleen Phillimore]

On Tue, 2 Sep 2025 11:43:01 GMT, Coleen Phillimore <coleenp at openjdk.org> wrote:

>> src/hotspot/share/oops/instanceKlass.hpp line 924:
>> 
>>> 922:   // always an InstanceKlass (or nullptr)
>>> 923:   InstanceKlass* super() const {
>>> 924:     return (Klass::super() == nullptr) ? nullptr : InstanceKlass::cast(Klass::super());
>> 
>> Is it better/simpler/cleaner to just do:
>> 
>> return static_cast<InstanceKlass*>(Klass::super());
>> 
>> ?
>
> I think the term is "hides" not "shadows".  InstanceKlass::cast() is better - one additional check that super is always another InstanceKlass.

Do we still need java_super ?

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PR Review Comment: https://git.openjdk.org/jdk/pull/27037#discussion_r2315827420