RFR: 8367066: RISC-V: refine register selection in MacroAssembler:: decode_klass_not_null

[Hamlin Li]

On Mon, 8 Sep 2025 08:57:15 GMT, Hamlin Li <mli at openjdk.org> wrote:

> Hi,
> Can you help to review this patch?
> 
> Previously, the register selection in MacroAssembler:: decode_klass_not_null is misleading, better to refine it to improve the readability.
> 
> Thanks!
> 
> Running runtime test tier1/2/3...

I think we can further simplify the code in `decode_klass_not_null`, pleaes check the latest commit. Test running...

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PR Comment: https://git.openjdk.org/jdk/pull/27138#issuecomment-3270919419