RFR: 8320649: C2: Optimize scoped values [v18]

[Andrew Haley]

On Tue, 7 May 2024 16:53:21 GMT, Vladimir Kozlov <kvn at openjdk.org> wrote:

> I want to see performance numbers on x64 and aarch64 before starting looking on it. It would be nice to have data for all micros `test/micro/org/openjdk/bench/java/lang/ScopedValues*.java`
> 
> Put results into JBS and post short summary here.
> 
> You can compare by disable/enable new intrinsics.

I'm on it.

-------------

PR Comment: https://git.openjdk.org/jdk/pull/16966#issuecomment-2100706963