RFR: 8308506: Reduce testing time by removing combinations tested

[Thomas Schatzl]

On Mon, 22 May 2023 11:44:54 GMT, Leo Korinth <lkorinth at openjdk.org> wrote:

> Juggle3.java and Juggle3Quick.java tests many combinations of array juggling on different kinds of arrays. It tests:
> 
> - Primitive arrays (three for each kind of primitive)
> - Object arrays
> - Random arrays
> - A version with hashing
> 
> However when testing using primitive arrays, there is --- from a gc perspective --- no extra logic tested by going through all combinations. By removing these, we can save time and put our resources on testing other stuff.
> 
> I will keep three versions of primitive array tests (low, medium and high) with different kinds of arrays.
> 
> Also, the random array test will still test all primitive versions of arrays.

Lgtm.

Note that for `Juggle3`, the changes keeps 

  boolean-medium
  float-high
  double-low
  double-high

i.e. three levels run _four_ times unlike the description suggests.

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Marked as reviewed by tschatzl (Reviewer).

PR Review: https://git.openjdk.org/jdk/pull/14078#pullrequestreview-1438838257