RFR: 8318222: RISC-V: C2 CmpU3

[Hamlin Li]

On Tue, 24 Oct 2023 03:10:24 GMT, Fei Yang <fyang at openjdk.org> wrote:

> LGTM. May I ask on which platform was the JMH tested? 

It's `StarFive VisionFive 2 v1.3B`

> Also I think it's safer to perform some regression tests like tier1-3.

Thanks for reminding, I've run the hotspot compiler tests, and related jdk tests found by `grep -nr test/jdk  -we Long.compareUnsigned -we Integer.compareUnsigned`

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PR Comment: https://git.openjdk.org/jdk/pull/16314#issuecomment-1777179822