RFR: 8343685: C2 SuperWord: refactor VPointer with MemPointer [v6]

[Emanuel Peter]

On Wed, 15 Jan 2025 11:47:23 GMT, Christian Hagedorn <chagedorn at openjdk.org> wrote:

>> Emanuel Peter has updated the pull request incrementally with one additional commit since the last revision:
>> 
>>   More fixes for vnkozlov
>
> src/hotspot/share/opto/mempointer.hpp line 576:
> 
>> 574:   static const int SUMMANDS_SIZE = 10;
>> 575: 
>> 576:   class Base : public StackObj {
> 
> Could add the comment from above here as well as a description for the sub class:
> 
> // A base can be:
> // - Known:
> //   - On-heap: Object
> //   - Off-heap: Native
> // - Unknown

Good idea.

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PR Review Comment: https://git.openjdk.org/jdk/pull/21926#discussion_r1916712266