[lworld] Integrated: 8353195: [lworld] Several failures with -XX:+UseNullableValueFlattening

[Tobias Hartmann]

On Fri, 11 Apr 2025 13:24:05 GMT, Tobias Hartmann <thartmann at openjdk.org> wrote:

> This PR fixes several issues when running tests with `-XX:+UseNullableValueFlattening` (see JBS description and linked bugs for details).
> 
> While testing I found an intermittent SIGSEGV on AArch64 and spent a few days debugging without major progress. It seems to be a GC related issue. I filed [JDK-8355277](https://bugs.openjdk.org/browse/JDK-8355277) for this and will investigate separately.
> 
> All compiler and runtime Valhalla tests now pass with `-XX:+UseNullableValueFlattening` on my machine. I'll run more testing with [JDK-8350865](https://bugs.openjdk.org/browse/JDK-8350865).
> 
> Thanks,
> Tobias

This pull request has now been integrated.

Changeset: b72d63c7
Author:    Tobias Hartmann <thartmann at openjdk.org>
URL:       https://git.openjdk.org/valhalla/commit/b72d63c75ebac8ef52dfa96b093b02e208d4faa5
Stats:     258 lines in 16 files changed: 175 ins; 40 del; 43 mod

8353195: [lworld] Several failures with -XX:+UseNullableValueFlattening

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PR: https://git.openjdk.org/valhalla/pull/1428