[jdk21u-dev] RFR: 8317264: Pattern.Bound has `static` fields that should be `static final`.

[Francesco Andreuzzi]

On Thu, 24 Apr 2025 07:54:22 GMT, Goetz Lindenmaier <goetz at openjdk.org> wrote:

>> Clean backport of JDK-8317264. The fields are never assigned after initialization. final leads to shorter bytecode. It's a minor performance optimization in Regex.
>
> Hi @fandreuz 
> Why do you want to backport this? Please amend the fix request comment with a reasoning.  We usually don't backport performance enhancements.

Hi @GoeLin, thanks for your feedback. This is a minor performance optimization that gives us a small improvement for `Pattern`, without much, if any, risk. So we believe the cost/benefit for this optimization is still good for JDK 21.

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PR Comment: https://git.openjdk.org/jdk21u-dev/pull/1622#issuecomment-2827624818