RFR: 8365047: Remove exception handler stub code in C2 [v5]

[Martin Doerr]

On Fri, 26 Sep 2025 12:16:17 GMT, Ruben <duke at openjdk.org> wrote:

>> Ruben has updated the pull request incrementally with two additional commits since the last revision:
>> 
>>  - Address review comments
>>  - The patch is contributed by @TheRealMDoerr
>
> src/hotspot/cpu/ppc/c1_LIRAssembler_ppc.cpp line 278:
> 
>> 276:   __ b(start);
>> 277: 
>> 278:   guarantee(code_offset() - offset <= deopt_handler_size(), "overflow");
> 
> @TheRealMDoerr , I think this has to ensure there will be enough space for all of the stub code, not just the part starting from the entry point. Does this look correct from your perspective?

Good catch! Yeah, we should keep using `offset`, here. My mistake.

-------------

PR Review Comment: https://git.openjdk.org/jdk/pull/26678#discussion_r2382285446