RFR: 8371603: C2: Missing Ideal optimizations for load and store vectors on SVE [v2]

[Xiaohong Gong]

On Thu, 4 Dec 2025 08:23:31 GMT, Emanuel Peter <epeter at openjdk.org> wrote:

>> Xiaohong Gong has updated the pull request incrementally with one additional commit since the last revision:
>> 
>>   Combine the condition check and IR transformation to a method
>
> @XiaohongGong Thanks for taking this over from me and fixing this so quickly, much appreciated!
> 
> Thanks for adding my regression tests and for the attribution :)
> 
> I only have a minor comment below. Otherwise, the code looks good to me. But since I'm not an SVE specialist, it would be good if someone with deeper knowledge would do a deeper review of the specific SVE parts.
> 
> Once an SVE specialist gives the approval for the PR, I'l run some internal testing and approve from my side :)
> 
> Ah, and one more thing: you should change the PR title to be more descriptive of the issue. The assert that was hit is only a far removed symptom. I would suggest:
> 
> `C2 SVE: missing Ideal optimizations for load and store vectors`

Hi @eme64, I'v updated the patch based on your suggestion. Would you mind taking another look? Thanks!

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PR Comment: https://git.openjdk.org/jdk/pull/28651#issuecomment-3616043996