RFR: 8283229: compiler/arguments/TestCodeEntryAlignment.java fails with release VMs

[Dean Long]

On Tue, 15 Mar 2022 23:53:23 GMT, Jie Fu <jiefu at openjdk.org> wrote:

> Hi all,
> 
> compiler/arguments/TestCodeEntryAlignment.java fails with release VMs due to 'CodeCacheSegmentSize' is develop and is available only in debug version of VM.
> The fix would only run with 'CodeCacheSegmentSize' for debug VMs.
> 
> Thanks.
> Best regards,
> Jie

Not running this test in product/release builds seems like the wrong fix.  I suggest 2 possible alternatives:
1. Make CodeCacheSegmentSize a product flag.  It doesn't make sense to me for CodeCacheSegmentSize (develop flag), CodeEntryAlignment (experimental, product flag), and OptoLoopAlignment (product flag) to be different kinds of flags.
2. Allow CodeEntryAlignment to change the default value of CodeCacheSegmentSize.  It would also make sense for OptoLoopAlignment to update the default values of CodeEntryAlignment and CodeCacheSegmentSize.

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PR: https://git.openjdk.java.net/jdk/pull/7830