RFR: 8298470: Short cut java.lang.Object super class loading

[Coleen Phillimore]

On Fri, 16 Dec 2022 13:41:31 GMT, Coleen Phillimore <coleenp at openjdk.org> wrote:

> While investigating another bug, I found doing this simple optimization saves taking out a SystemDictionary_lock, adding and removing a placeholder and some Symbol refcounting.
> Tested with tier1-4.

Thanks for the reviews David and Ioi!  I think I tried this optimization once and did it wrong, or decided that calling into resolve_super_or_fail was necessary, or didn't want to skip the CDS code in the beginning of resolve_super_or_fail.  Just checked with Ioi and it has no side effects so the optimization is good.  I don't think it saves a lot of time but it does help with debugging.  Thanks!

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PR: https://git.openjdk.org/jdk/pull/11711