RFR: 8373495: C2: Aggressively fold loads from objects that have not escaped

[Vladimir Ivanov]

On Sat, 13 Dec 2025 02:49:07 GMT, Quan Anh Mai <qamai at openjdk.org> wrote:

> Hi,
> 
> This patch is an alternative to #28764 but it does the analysis during IGVN instead.
> 
> Please take a look and leave your thoughts, thanks a lot.

Very nice! I definitely prefer the approach here to #28764.

I see that the unit test stays the same and there's an adjustment in some other test, so I assume this version is functionally more powerful than #28764 version.

Have you had a chance to measure how much it affects compilation speed compared to #28764?

(The code is dense and hard to reason about, so some polishing/refactoring to make it more readable. Also, please, think about verification checks.)

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PR Comment: https://git.openjdk.org/jdk/pull/28812#issuecomment-3648880857