RFR: 8320649: C2: Optimize scoped values [v7]

[Roland Westrelin]

On Tue, 13 Feb 2024 17:49:31 GMT, Emanuel Peter <epeter at openjdk.org> wrote:

> For `java/lang/ScopedValue/StressStackOverflow.java#no-TieredCompilation`, no extra flags on `linux-aarch64` (product build): [test_jdk_tier1_part1_java_lang_ScopedValue_StressStackOverflow_no-TieredCompilation_replay_pid1260224.log](https://github.com/openjdk/jdk/files/14270266/test_jdk_tier1_part1_java_lang_ScopedValue_StressStackOverflow_no-TieredCompilation_replay_pid1260224.log)

I fixed that one and added a test case for it.

> And a second failure: `serviceability/jvmti/vthread/SuspendWithInterruptLock/SuspendWithInterruptLock.java#default`, with flags: `-Xcomp -ea -esa -XX:CompileThreshold=100 -XX:+UnlockExperimentalVMOptions -server -XX:-TieredCompilation` on ` linux-aarch64-debug`. No replay since it does not seem to happen during compilation.

This one doesn't seem related. I couldn't reproduce it. Can you reproduce it? Could it be a spurious failure that just happened to show up on your test run?

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PR Comment: https://git.openjdk.org/jdk/pull/16966#issuecomment-1946566567