RFR: 8353216: Improve VerifyMethodHandles for method handle linkers [v2]

[Vladimir Ivanov]

On Fri, 11 Apr 2025 22:24:27 GMT, Dean Long <dlong at openjdk.org> wrote:

>> Vladimir Ivanov has updated the pull request incrementally with two additional commits since the last revision:
>> 
>>  - assert_different_registers on x86
>>  - jcc->jccb
>
> src/hotspot/cpu/aarch64/methodHandles_aarch64.cpp line 110:
> 
>> 108:         __ lea(rscratch2, Address(method_holder, InstanceKlass::init_state_offset()));
>> 109:         __ ldarb(rscratch2, rscratch2);
>> 110:         __ subs(zr, rscratch2, InstanceKlass::fully_initialized);
> 
> I think `cmp` might be more readable.

Agree. Changed.

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PR Review Comment: https://git.openjdk.org/jdk/pull/23950#discussion_r2040381761