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OpenJDK > 11 has GraalVM inside, you can activate it with a switch.

https://openjdk.java.net/projects/graal/

This is partially incorrect. JEP 410 [0] will be removing them from HotSpot in the next release (17). Project Metropolis has also been put on hold, so for the foreseeable future if you want Graal features, you'll have to use GraalVM [1]

[0] https://openjdk.java.net/jeps/410 [1] https://mail.openjdk.java.net/pipermail/metropolis-dev/2021-...

That is incorrect. JVMCI is still in OpenJDK and is the only thing required to run Graal. You need to put Graal as jar from Maven on the upgrade-module-path since JEP 410 since it's no longer there by default but this is the only thing that changed.

So you can continue to use Graal as your last tier compiler or to compile Truffle languages on OpenJDK.

I see! I must have misinterpreted the mailing list.

> so for the foreseeable future if you want Graal features, you'll have to use GraalVM

This isn't true - you can use Graal from a JAR just fine.

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