RFR: 8342393: Promote commutative vector IR node sharing [v20]

[Jatin Bhateja]

On Thu, 30 Jan 2025 09:53:13 GMT, Emanuel Peter <epeter at openjdk.org> wrote:

> Oh, I see you added it here, rather than at each IR rule. It would be nice to have this test also execute on other machines, for additional coverage.
> 
These tests are only significant from commoning point of view which is checked through IR rule.

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PR Review Comment: https://git.openjdk.org/jdk/pull/22863#discussion_r1935602246