RFR: 8305895: Implement JEP 450: Compact Object Headers (Experimental) [v6]

[Hamlin Li]

On Tue, 27 Aug 2024 05:37:30 GMT, Fei Yang <fyang at openjdk.org> wrote:

>> src/hotspot/cpu/riscv/c1_MacroAssembler_riscv.cpp line 170:
>> 
>>> 168:   mv(tmp1, (int32_t)(intptr_t)markWord::prototype().value());
>>> 169:   sd(tmp1, Address(obj, oopDesc::mark_offset_in_bytes()));
>>> 170: // Todo UseCompactObjectHeaders
>> 
>> Can I ask, will this pr fullly support riscv?
>
> @Hamlin-Li : AFAIK, porting to linux-riscv platform has NOT been started yet. To avoid duplicate work, please let me know if anyone is interested or has been working on it :-)

Yes, I'm interested in it. Thanks for raising the discussion. :)

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PR Review Comment: https://git.openjdk.org/jdk/pull/20677#discussion_r1732312058