RFR: JDK-8275865: Print deoptimization statistics in product builds

[David Holmes]

On Mon, 25 Oct 2021 11:46:06 GMT, Volker Simonis <simonis at openjdk.org> wrote:

> Deoptimization statistics are already gathered in product builds but for some (probably historical) reasons aren't printed to the VM/Compiler log. These statics can be useful when analyzing the reasons for deoptimization and frequent recompilations.
> 
> Because the statistics are already collected anyway, printing them at VM-exit if either `-XX:+LogCompilation` or `-XX:+LogVMOutput` are set won't introduce any runtime overhead.

I think the compiler folk need to be the ones to assess this change.

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PR: https://git.openjdk.java.net/jdk/pull/6103