RFR: 8346664: C2: Optimize mask check with constant offset [v14]

[Emanuel Peter]

On Fri, 31 Jan 2025 08:01:30 GMT, Matthias Ernst <duke at openjdk.org> wrote:

>> Matthias Ernst has updated the pull request incrementally with two additional commits since the last revision:
>> 
>>  - indent
>>  - consistently label failing cases due to Align requirements.
>
> Thank you! All comment changes are in, and all (modulo Win still in progress)  presubmit tests have passed in https://github.com/mernst-github/jdk/actions/runs/13067775176 .

@mernst-github Thanks for the updates! The last tests seem to have passed on all platforms except windows x64, with some strang wrong results failures. I think I'll re-run the tests to see if it persists, I'm not yet sure if it's because of your patch.

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PR Comment: https://git.openjdk.org/jdk/pull/22856#issuecomment-2630164582