[lworld] RFR: 8311219: [lworld] VM option "InlineFieldMaxFlatSize" cannot work well [v2]

Thu Aug 10 11:56:33 UTC 2023

On Thu, 10 Aug 2023 03:30:50 GMT, Xiaohong Gong <xgong at openjdk.org> wrote:

> Hi, could anyone please take a look at this PR? Thanks a lot in advance!

This should also be looked in light of atomicity constraint during updates which does not apply to Q descriptor value field.  But aggressive flattening can adversely affect caching behavior.  Just going slightly off the topic, in context of Vector APIs (lworld+vector) all the payloads are final primitive class fields and will always be flattened in their respective boxes.  

Best Regards.

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PR Comment: https://git.openjdk.org/valhalla/pull/888#issuecomment-1673069371