[jdk17] RFR: 8269304: Regression ~5% in 2005 in b27

[Vladimir Kozlov]

On Sat, 26 Jun 2021 14:01:13 GMT, Vladimir Kozlov <kvn at openjdk.org> wrote:

> JDK-8268347 changes missed check for valid case when all locks/unlocks in coarsened group were eliminated.
> As result methods were recompiled without locks coarsening optimization leaving locks in code.
> 
> Tested tier1-3, xcomp, performance.

Thank you, Dean and Roland.

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PR: https://git.openjdk.java.net/jdk17/pull/155