RFR: 8324969: C2: prevent elimination of unbalanced coarsened locking regions [v5]

[Vladimir Kozlov]

On Wed, 14 Feb 2024 10:15:02 GMT, Emanuel Peter <epeter at openjdk.org> wrote:

>> Drive-by suggestion: Can we name the bug mention what is being done, rather than a symptom? Thanks!
>
> @shipilev people have different philosophies about that, it seems. Is there a "style guiede" for that?
> I prefer "what is being done" too. Makes it easier when browsing through the "git blame" later.
> 
> Suggestion: `C2: prevent elimination of unballanced coarsened lock boxes`

Thank you, @eme64, for review.

I will merge the latest JDK sources and do additional testing with it before integration.

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PR Comment: https://git.openjdk.org/jdk/pull/17697#issuecomment-1967291659