RFR: 8354215: Clean up Loom support after 32-bit x86 removal [v2]

[Aleksey Shipilev]

On Fri, 11 Apr 2025 11:35:30 GMT, Coleen Phillimore <coleenp at openjdk.org> wrote:

>> Aleksey Shipilev has updated the pull request incrementally with one additional commit since the last revision:
>> 
>>   Touchups
>
> src/hotspot/cpu/x86/macroAssembler_x86.cpp line 2996:
> 
>> 2994: 
>> 2995:   Label done;
>> 2996:   cmpptr(rrealsp, Address(rthread, JavaThread::cont_fastpath_offset()));
> 
> While you're here, can you change rthread to r15_thread?

Yeah, I don't mind, changed.

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PR Review Comment: https://git.openjdk.org/jdk/pull/24591#discussion_r2039386731