RFR: 8307352: AARCH64: Improve itable_stub [v2]

[Boris Ulasevich]

On Wed, 19 Jul 2023 09:20:48 GMT, Evgeny Astigeevich <eastigeevich at openjdk.org> wrote:

>> Boris Ulasevich has updated the pull request with a new target base due to a merge or a rebase. The incremental webrev excludes the unrelated changes brought in by the merge/rebase. The pull request contains one additional commit since the last revision:
>> 
>>   8307352: AARCH64: Improve itable_stub
>
> src/hotspot/cpu/aarch64/macroAssembler_aarch64.cpp line 1245:
> 
>> 1243:   cbz(temp_itbl_klass, L_no_such_interface);
>> 1244: 
>> 1245:   // Loop: Look for holder_klass record in itable
> 
> `// Loop: Look for  itableOffsetEntry containing holder_klass`

The structure of itable is now explained in comment above
`  // itableOffsetEntry[] itable = recv_klass + Klass::vtable_start_offset() + recv_klass->_vtable_len;`

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PR Review Comment: https://git.openjdk.org/jdk/pull/13792#discussion_r1285558445