[lworld] RFR: 8367412: [lworld] Adapter creation fails with guarantee(chk == -1 || chk == 0) failed: Field too big for insn
Tobias Hartmann
thartmann at openjdk.org
Tue Sep 30 14:01:54 UTC 2025
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
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Commit messages:
- 8367412: [lworld] Adapter creation fails with guarantee(chk == -1 || chk == 0) failed: Field too big for insn
Changes: https://git.openjdk.org/valhalla/pull/1646/files
Webrev: https://webrevs.openjdk.org/?repo=valhalla&pr=1646&range=00
Issue: https://bugs.openjdk.org/browse/JDK-8367412
Stats: 2 lines in 2 files changed: 0 ins; 1 del; 1 mod
Patch: https://git.openjdk.org/valhalla/pull/1646.diff
Fetch: git fetch https://git.openjdk.org/valhalla.git pull/1646/head:pull/1646
PR: https://git.openjdk.org/valhalla/pull/1646
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