RFR: 8327963: C2: fix construction of memory graph around Initialize node to prevent incorrect execution if allocation is removed [v17]

[Roland Westrelin]

On Tue, 4 Nov 2025 07:17:02 GMT, Emanuel Peter <epeter at openjdk.org> wrote:

>> Roland Westrelin has updated the pull request incrementally with one additional commit since the last revision:
>> 
>>   review
>
> src/hotspot/share/opto/memnode.hpp line 1418:
> 
>> 1416:     }
>> 1417:     return res->as_NarrowMemProj();
>> 1418:   }
> 
> Nit, optional: Could we not remove some fluff here with a `isa_NarrowMemProj`? You would not have to check for `res == nullptr`.

I don't think we can. Wouldn't we have to call a method on a possibly `null` res?

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PR Review Comment: https://git.openjdk.org/jdk/pull/24570#discussion_r2489235039