RFR: 8254693: Add Panama feature to pass heap segments to native code [v7]

[Jorn Vernee]

On Thu, 19 Oct 2023 18:15:45 GMT, Sidraya Jayagond <sjayagond at openjdk.org> wrote:

>> @feilongjiang Thanks, I've added it to the PR
>> 
>> @TheRealMDoerr Note that `reg_offset` is filtered out, and not handled by `arg_shuffle`. So, it becomes the question whether shuffling a register, or adding an offset to an oop takes more bytes. I think most of the `native_invoker_size_per_arg` have some lenience built in though? (I did do that for x64 and aarch64 at least). So, I think it will be okay.
>> 
>> I've added an additional test case to the existing test for this, which should stress the new code gen. (https://github.com/openjdk/jdk/pull/16201/commits/dd9e9741de3ca07e6a4cc561002255f98e1e3330)
>
> @JornVernee  Please add below patch for addressing of @RealLucy review comments.
> [0001-Address-Lutz-Schmidt-s-review-comments.txt](https://github.com/openjdk/jdk/files/13046224/0001-Address-Lutz-Schmidt-s-review-comments.txt)

@sid8606 I've added the patch. There were a couple of commented out lines which I've removed.

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PR Comment: https://git.openjdk.org/jdk/pull/16201#issuecomment-1772229009