[lworld] RFR: 8374810: [lworld] Generate COH archives

[Frederic Parain]

On Thu, 8 Jan 2026 16:51:20 GMT, Coleen Phillimore <coleenp at openjdk.org> wrote:

> This change both enables the UseCompactObjectHeaders archives for valhalla and fixes the test that looks for the archives.  Testing with tier1-3 with --enable-preview and -XX:+UseCompactObjectHeaders.

Looks good to me.
But I have a question that could be addressed in a different patch: why is the suffix of the archive still '_valhalla' ? Shouldn't it be '_preview' now that the "Valhalla" mode is controlled by the "--enable-preview" option?

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Marked as reviewed by fparain (Committer).

PR Review: https://git.openjdk.org/valhalla/pull/1871#pullrequestreview-3641372777