RFR: 8343685: C2 SuperWord: refactor VPointer with MemPointer [v4]

Wed Jan 15 06:43:24 UTC 2025

On Mon, 13 Jan 2025 20:22:06 GMT, Vladimir Kozlov <kvn at openjdk.org> wrote:

>> Emanuel Peter has updated the pull request with a new target base due to a merge or a rebase. The pull request now contains 116 commits:
>> 
>>  - copyright 2025
>>  - Merge branch 'master' into JDK-8343685-VPointer-MemPointer
>>  - manual merge
>>  - fix printing
>>  - rename
>>  - fix up print
>>  - add TestEquivalentInvariants.java
>>  - improve documentation
>>  - hide parser via delegation
>>  - Merge branch 'master' into JDK-8343685-VPointer-MemPointer
>>  - ... and 106 more: https://git.openjdk.org/jdk/compare/84e6432b...b64f9295
>
> I have few comments.

> @vnkozlov thanks for having a look at it! I think I have addressed all your points.

I still have concern about `cmp()` with NaN values. See my comment.

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PR Comment: https://git.openjdk.org/jdk/pull/21926#issuecomment-2591757405