RFR: 8339112: Move JVM Klass flags out of AccessFlags [v2]

[Dean Long]

On Thu, 29 Aug 2024 18:50:42 GMT, Coleen Phillimore <coleenp at openjdk.org> wrote:

>> Move JVM implementation access flags that are not specified by the classfile format into Klass so we can shrink AccessFlags to u2 in a future change.
>> 
>> Tested with tier1-7.
>> 
>> NOTE: there are arm, ppc and s390 changes to this that are just a guess.  Also, graal changes.
>
> Coleen Phillimore has updated the pull request incrementally with one additional commit since the last revision:
> 
>   Add in graal flags and a comment.

src/hotspot/share/ci/ciKlass.cpp line 233:

> 231: jint ciKlass::misc_flags() {
> 232:   assert(is_loaded(), "not loaded");
> 233:   GUARDED_VM_ENTRY(

To Compiler folks: I don't think the VM_ENTRY is necessary, but if it is, then we should consider entering VM mode once and caching/memoizing these immutable flag values in the ciKlass.

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PR Review Comment: https://git.openjdk.org/jdk/pull/20719#discussion_r1737286933