RFR: 8337753: Target class of upcall stub may be unloaded [v3]

[Amit Kumar]

On Wed, 4 Sep 2024 10:00:47 GMT, Martin Doerr <mdoerr at openjdk.org> wrote:

>> Jorn Vernee has updated the pull request incrementally with one additional commit since the last revision:
>> 
>>   add RISC-V as target platform
>
> src/hotspot/cpu/s390/stubGenerator_s390.cpp line 3062:
> 
>> 3060:     StubCodeMark mark(this, "StubRoutines", "upcall_stub_load_target");
>> 3061:     address start = __ pc();
>> 3062:     __ save_return_pc();
> 
> @offamitkumar: Is saving and restoring the return_pc needed? Isn't in preserved by load_heap_oop?

I looked into it, but couldn't find out. But I remove the `save_return_pc` & `restore_return_pc` and everything seems fine. So maybe we can remove it.

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PR Review Comment: https://git.openjdk.org/jdk/pull/20479#discussion_r1744116982