RFR: 8332587: RISC-V: secondary_super_cache does not scale well

[Gui Cao]

On Mon, 3 Jun 2024 08:27:50 GMT, Hamlin Li <mli at openjdk.org> wrote:

> Hey, is there performance comparison data when zbb is not supported? Just want to know if it can also get performance gain in that situation, then this optimization is a more generic one.
> 
> The reason for ask this question is that seems JDK-8180450 is an optimization for cache line, it should or could bring benefit even if zbb is not supported?

Hi, Thanks for the review. Sorry for being late. I've implemented the scalar register version before, but tested it and had data performance decrease, so the scalar implementation is not included in this Patch.

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PR Comment: https://git.openjdk.org/jdk/pull/19320#issuecomment-2144904585