RFR: 8318218: RISC-V: C2 CompressBits

[Robbin Ehn]

On Thu, 2 Nov 2023 16:50:50 GMT, Hamlin Li <mli at openjdk.org> wrote:

> Hi,
> Can you review the change to add intrinsic for CompressBits for Long & Integer?
> Thanks!
> 
> ## Test
> pass jtreg test:
> test/jdk/java/lang/CompressExpand*.java

Personally I'm against these 'micro' options .e.g. UseRVVForXX.
Even if it was possible to test out all combinations of options, no end-user will actually do it.
I'm perfectly fine with just removing those and just have RVV in this cases.

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PR Comment: https://git.openjdk.org/jdk/pull/16481#issuecomment-1792030041