RFR: 8343685: C2 SuperWord: refactor VPointer with MemPointer [v13]

[Emanuel Peter]

On Thu, 16 Jan 2025 15:44:18 GMT, Christian Hagedorn <chagedorn at openjdk.org> wrote:

>> Emanuel Peter has updated the pull request incrementally with one additional commit since the last revision:
>> 
>>   refactor to has_invar_summands and print invar and fix non-product guards
>
> Thanks for addressing my comments! I did a pass on your updates only and left some more comments but mostly minor. Will continue tomorrow with the other files.

@chhagedorn Thanks for the second pass on the file! I think I addressed all your suggestions :)

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PR Comment: https://git.openjdk.org/jdk/pull/21926#issuecomment-2596147232