RFR: 8365047: Remove exception handler stub code in C2 [v4]

[Ruben]

On Mon, 15 Sep 2025 10:53:50 GMT, Martin Doerr <mdoerr at openjdk.org> wrote:

> I suggest reverting only the PPC64 files to the previous version. That one works. There should never be a `bl` instruction immediately before the deopt handler on PPC64.

Thank you, @TheRealMDoerr,
I will revert the change in PPC64 files and will add a comment in the `emit_deopt_handler`. Would it be possible for you to advise what does guarantee there is never a `bl` before the deopt handler?

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PR Comment: https://git.openjdk.org/jdk/pull/26678#issuecomment-3292062709