RFR: 8321003: RISC-V: C2 MulReductionVI [v2]

[Robbin Ehn]

On Wed, 12 Jun 2024 12:43:39 GMT, Hamlin Li <mli at openjdk.org> wrote:

>> Hi,
>> Can you help to review this patch to implement MulReductionVI/MulReductionVL/MulReductionVF/MulReductionVD?
>> On riscv, there is no straightforward instructions to do it, but we can do it with a reduction tree, which could reduce the time complexity to lg(N).
>> Thanks
>> 
>> ## Performance
>> TBD
>
> Hamlin Li has updated the pull request with a new target base due to a merge or a rebase. The pull request now contains three commits:
> 
>  - merge master
>  - fix issues
>  - Initial commit

Can you convert to draft please?

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PR Comment: https://git.openjdk.org/jdk/pull/19015#issuecomment-2199340214