RFR: 8348207: Linux PPC64 PCH build broken after JDK-8347909

[Magnus Ihse Bursie]

On Fri, 24 Jan 2025 08:56:59 GMT, Matthias Baesken <mbaesken at openjdk.org> wrote:

>> I must admit I did not realize this list was dependent on the `opt-size` feature, so I cannot say if my patch really works with that enabled. Maybe the OPT_SPEED_SRC list is needed then, after all.
>> 
>> Nevertheless, I think we can limit the change for ppc on gcc. When I added the -W flag for more detailed warnings, I was taught that it was the value of some -mpower-..somethingsomething flag that was problematic for PCHs. So it seems like it could be a very much PPC specific problem.
>
>> Nevertheless, I think we can limit the change for ppc on gcc.
> 
> That's fine. Do you want to do it in your PR or should I do it  in this one?

I think it is better to do this change separately here; I intend to remove the corresponding changes in my PR.

Did you test what happened when opt-size was configured, if you needed to exclude all the files in OPT_SPEED_SRC  as well?

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PR Review Comment: https://git.openjdk.org/jdk/pull/23268#discussion_r1928557659