RFR: 8352159: RISC-V: add more zfa support [v3]

[Fei Yang]

On Mon, 17 Mar 2025 18:58:18 GMT, Hamlin Li <mli at openjdk.org> wrote:

>> Hi,
>> Can you help to review this patch?
>> 
>> Previously in https://github.com/openjdk/jdk/pull/23844, `loadConH` is implemented only with `flh`, but `fli_h` should be more efficient if Zfa is supported; min/max for HF could use fmin/maxm.h instead too.
>> 
>> Thanks!
>
> Hamlin Li has updated the pull request incrementally with three additional commits since the last revision:
> 
>  - fix fli_h
>  - fix rFlagsReg
>  - refactor min/max

src/hotspot/cpu/riscv/riscv.ad line 8390:

> 8388: %}
> 8389: 
> 8390: instruct min_HF_reg(fRegF dst, fRegF src1, fRegF src2, rFlagsReg cr)

Ah, the max/min_HF part of the work seems duplicate https://github.com/openjdk/jdk/pull/24047?

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PR Review Comment: https://git.openjdk.org/jdk/pull/24081#discussion_r1999874502