RFR: 8339531: Improve performance of MemorySegment::mismatch [v9]

[Maurizio Cimadamore]

On Thu, 5 Sep 2024 17:50:04 GMT, Maurizio Cimadamore <mcimadamore at openjdk.org> wrote:

>> Per Minborg has updated the pull request incrementally with one additional commit since the last revision:
>> 
>>   Fix errors in a benchmark
>
> src/java.base/share/classes/jdk/internal/foreign/SegmentBulkOperations.java line 179:
> 
>> 177:                 return 0;
>> 178:             }
>> 179:             i = AbstractMemorySegmentImpl.vectorizedMismatchLargeForBytes(src.sessionImpl(), dst.sessionImpl(),
> 
> We should probably move `vectorizedMismatchLargeForBytes` in this class too, for clarity

I see the method is still in `AbstractMemorySegmentImpl`. Note that if we could move it here, we can then drop (I think) `SCOPED_MEMORY_ACCESS` from `AbstractMemorySegmentImpl`.

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PR Review Comment: https://git.openjdk.org/jdk/pull/20848#discussion_r1747218277