best practices for testing JVM changes that may interact with CDS?

[John Rose]

David Chase and I are testing a JVM change that may affect the layout of vtables.  I know vtables are special-cased in CDS (class data sharing) code, which dumps and reloads metadata including vtables.

What is the best way to perform regression tests for changes that might interact with CDS?  Is it enough to run jtreg tests?  I notice that there appears to be a dump/load end-to-end test in test/runtime/SharedArchiveFile/.

Thanks,
— John