RFR: 8366118: DontCompileHugeMethods is not respected with -XX:-TieredCompilation

[Jiangli Zhou]

On Mon, 25 Aug 2025 19:38:23 GMT, Man Cao <manc at openjdk.org> wrote:

> Hi,
> 
> Could anyone review this change that fixes https://bugs.openjdk.org/browse/JDK-8366118? When this bug happens, it is difficult or almost impossible to debug due to the lack of stack trace, hs-err log or core dump. Fortunately we are also experimenting with sigaltstack for https://bugs.openjdk.org/browse/JDK-8364654, and it helped immensely to identify the root cause.
> 
> I will also try adding a test case for DontCompileHugeMethod under -XX:-TieredCompilation.
> 
> -Man

I looked at the internal change on JDK 21 and suggested to send the change for review in OpenJDK to get feedback from compiler-dev, as I have a couple of questions for the change. I'll post my questions as review comments to the PR as well.

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PR Comment: https://git.openjdk.org/jdk/pull/26932#issuecomment-3221672961