RFR: 8360000: RISC-V: implement aot [v5]

[Hamlin Li]

On Mon, 14 Jul 2025 11:46:22 GMT, Hamlin Li <mli at openjdk.org> wrote:

>> Hi,
>> Can you help to review this patch?
>> 
>> https://openjdk.org/jeps/483 introduced aot (class loading/linking) and subsequent prs introduced more features related to it, like preserve adapters(c2i/i2c) and runtime blobs in AOT code cache.
>> 
>> Riscv should support these features and resolve relative issues.
>> 
>> ## Test
>> 
>> ### jtreg
>> 
>> run tier1/2/3 and hotspot_cds tests, no new failure found compared to master jdk. 
>> 
>> ### Performance
>> 
>> perf command to run the simplest Hello world java program:
>> * (perf stat -r 100 ${JAVA_HOME}/bin/java -XX:AOTCache=$AOT_CACHE -cp $CLASS_PATH Hello > /dev/null) 2>&1 | grep elapsed
>> 
>> perf data:
>> * (with patch): 0.181730 +- 0.000296 seconds time elapsed ( +- 0.16% )
>> * (without patch): 0.196627 +- 0.000227 seconds time elapsed ( +- 0.12% )
>> 
>> Thanks
>
> Hamlin Li has updated the pull request incrementally with one additional commit since the last revision:
> 
>   minor

Latest patch based on leyden/premain works well, I'll wait for https://github.com/openjdk/jdk/pull/23573, https://github.com/openjdk/jdk/pull/26944 pushed in.

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PR Comment: https://git.openjdk.org/jdk/pull/26101#issuecomment-3248740399