RFR: 8299795: Relativize locals in interpreter frames [v4]

[Robbin Ehn]

On Tue, 17 Jan 2023 17:34:53 GMT, Andrew Haley <aph at openjdk.org> wrote:

>> Fredrik Bredberg has updated the pull request with a new target base due to a merge or a rebase. The incremental webrev excludes the unrelated changes brought in by the merge/rebase. The pull request contains five additional commits since the last revision:
>> 
>>  - Merge branch 'master' into relativize-locals-JDK-8299795_2023-01-09
>>  - Added references to JDK-8300197
>>  - Updated some copyright dates.
>>  - Changed copyright date to 2023
>>  - 8299795: Relativize locals in interpreter frames
>
>> Implementation of relativized locals in interpreter frames for x86. x64, arm, aarch64, ppc64le and riscv. Not relativized locals on zero and s390 but done some changes to cope with the changed generic code. Tested tier1-tier8 on supported platforms. The rest was sanity tested using Qemu, except s390, which was only tested by GitHub Actions.
> 
> Please explain for the record the purpose of this patch. Neither the PR nor the Jira issue explain. I presume it's something to do with making the mounting and unmounting of interpreter frames easier, but this must be said somewhere.

@theRealAph are you planning to provide additional feedback, or can it be shipped?

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PR: https://git.openjdk.org/jdk/pull/11902