RFR: 8333133: Simplify QuickSort::sort [v2]

[Kim Barrett]

On Wed, 19 Jun 2024 08:41:24 GMT, Kim Barrett <kbarrett at openjdk.org> wrote:

>> The "idempotent" argument is removed from that function, with associated
>> simplifications to the implementation. Callers are updated to remove that
>> argument. Callers that were providing a false value are unaffected in their
>> behavior.  The 3 callers that were providing a true value to request the
>> associated feature are also unaffected (other than by being made faster),
>> because the arrays involved don't contain any equivalent pairs.
>> 
>> There are also some miscellaneous cleanups, including using the swap utility
>> and fixing some comments.
>> 
>> Testing: mach5 tier1-3
>
> Kim Barrett has updated the pull request incrementally with one additional commit since the last revision:
> 
>   improve find_pivot description

Thanks for reviews.

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PR Comment: https://git.openjdk.org/jdk/pull/19464#issuecomment-2190724041