RFR: 8265128: [REDO] Optimize Vector API slice and unslice operations [v3]

[Sandhya Viswanathan]

On Fri, 30 Apr 2021 23:34:15 GMT, Paul Sandoz <psandoz at openjdk.org> wrote:

>>> @PaulSandoz would it be possible for you to run this through your testing?
>> 
>> Started, will report back when done.
>
>> > @PaulSandoz would it be possible for you to run this through your testing?
>> 
>> Started, will report back when done.
> 
> Tier 1 to 3 tests all pass on build profiles linux-x64 linux-aarch64 macosx-x64 windows-x64

@PaulSandoz After we fixed the Objects.checkIndex arguments per your review comment, the changes in library_call.cpp are no more needed so I have backed them out.  That leaves only changes in vector api code which you have reviewed. Please let me know if it is ok to push.

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PR: https://git.openjdk.java.net/jdk/pull/3804