RFR: 8259278: Optimize Vector API slice and unslice operations [v2]

[Sandhya Viswanathan]

On Wed, 6 Jan 2021 17:18:14 GMT, Paul Sandoz <psandoz at openjdk.org> wrote:

>> Sandhya Viswanathan has updated the pull request incrementally with one additional commit since the last revision:
>> 
>>   Use Objects.checkIndex and move code to xxxVector.java
>
> The following bounds check can be replaced with Objects.checkIndex:
>         if ((origin < 0) || (origin >= VLENGTH)) {
>             throw new ArrayIndexOutOfBoundsException("Index " + origin + " out of bounds for vector length " + VLENGTH);
>         }
> 
> In general, I am wondering why the code for the slice/unslice implementations cannot refer to template code of the abstract super class, thereby avoiding much duplication.

@PaulSandoz Thanks a lot for the review. I have implemented both the changes you suggested.

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PR: https://git.openjdk.java.net/jdk/pull/1950