RFR: Disable redundant generation usage after fullgc

Tue Apr 4 16:24:59 UTC 2023

On Tue, 4 Apr 2023 15:15:42 GMT, Kelvin Nilsen <kdnilsen at openjdk.org> wrote:

> After a recent integration, we ended up recomputing generation usage twice.  This change integrates the two efforts with a single more efficient pass.

Marked as reviewed by wkemper (Committer).

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PR Review: https://git.openjdk.org/shenandoah/pull/242#pullrequestreview-1371351789