[lworld] RFR: 8367412: [lworld] Adapter creation fails with guarantee(chk == -1 || chk == 0) failed: Field too big for insn [v2]

[Manuel Hässig]

On Tue, 30 Sep 2025 14:47:03 GMT, Tobias Hartmann <thartmann at openjdk.org> wrote:

>> We hit a guarantee failure because the immediate of the branch instruction is too large. We should use a `far_jump` instead, like we do for all other jumps to `StubRoutines::forward_exception_entry()`.
>> 
>> I can reproduce this reliably with `test/hotspot/jtreg/runtime/valhalla/inlinetypes/classloading/ConcurrentClassLoadingTest.java` and therefore did not add another regression test.
>> 
>> Thanks,
>> Tobias
>
> Tobias Hartmann has updated the pull request incrementally with one additional commit since the last revision:
> 
>   Increased timeout

Thank you for fixing this, @TobiHartmann. Looks good to me.

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Marked as reviewed by mhaessig (no project role).

PR Review: https://git.openjdk.org/valhalla/pull/1646#pullrequestreview-3285470722