[jdk25u] RFR: 8359270: C2: alignment check should consider base offset when emitting arraycopy runtime call

[Fei Yang]

On Thu, 26 Jun 2025 01:49:33 GMT, Fei Yang <fyang at openjdk.org> wrote:

> Hi all,
> 
> This pull request contains a backport of commit [6b439391](https://github.com/openjdk/jdk/commit/6b4393917ae689818d67fcaf9cc61ca16ea6d426) from the [openjdk/jdk](https://git.openjdk.org/jdk) repository.
> 
> The commit being backported was authored by Fei Yang on 23 Jun 2025 and was reviewed by Tobias Hartmann and Vladimir Kozlov.
> 
> Thanks!

GHA failures on windows is unrelated.

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PR Comment: https://git.openjdk.org/jdk25u/pull/6#issuecomment-3021301091