[lworld] RFR: 8374554: [lworld] Field layout assert with UseCompactObjectHeaders

[Frederic Parain]

On Wed, 7 Jan 2026 12:44:23 GMT, Frederic Parain <fparain at openjdk.org> wrote:

> Fix an issue in the logic processing the beginning of a field layout, abstract value class with fields were processing correctly.
> 
> Add more configurations to tests in order to cover compact object headers too.
> Re-enabled some tests that were disabled, an extended them to cover compact object headers too.
> 
> Tested with Mach5 tier 1 to 3.
> 
> Thank you,
> 
> Fred

Test scenarios have been renamed and scenario 4 has been changed to keep compressed class pointers enabled.

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PR Comment: https://git.openjdk.org/valhalla/pull/1862#issuecomment-3720132487