RFR: 8347981: RISC-V: Add Zfa zli imm loads [v2]

[Robbin Ehn]

On Tue, 21 Jan 2025 01:33:43 GMT, Fei Yang <fyang at openjdk.org> wrote:

>> Robbin Ehn has updated the pull request with a new target base due to a merge or a rebase. The incremental webrev excludes the unrelated changes brought in by the merge/rebase. The pull request contains three additional commits since the last revision:
>> 
>>  - Flip bool static decl
>>  - Merge branch 'master' into zfa
>>  - Baseline
>
> src/hotspot/cpu/riscv/globals_riscv.hpp line 106:
> 
>> 104:   product(bool, UseZbb, false, DIAGNOSTIC, "Use Zbb instructions")               \
>> 105:   product(bool, UseZbs, false, DIAGNOSTIC, "Use Zbs instructions")               \
>> 106:   product(bool, UseZfa, false, DIAGNOSTIC, "Use Zfa instructions")               \
> 
> Is there any hardware available for testing?

I don't have such hardware anyways. Make exprimental?

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PR Review Comment: https://git.openjdk.org/jdk/pull/23171#discussion_r1923265309