Debugging Graal-enabled OpenJDK

[Andrew Haley]

I'm trying to follow the instructions at
https://github.com/graalvm/graal-core/blob/master/docs/Debugging.md

My problem is that none of the Graal classes seem to be loaded but
compilation is still happening.  I see:

 mx -d vm -XX:+UseJVMCICompiler  -cp ~ -XX:+PrintCompilation Hello
Listening for transport dt_socket at address: 8000
   7142    1       3       java.lang.String::hashCode (55 bytes)
   7144    2       3       java.lang.String::charAt (29 bytes)
   7145    3       3       java.lang.String::length (6 bytes)
   7145    4       3       java.lang.String::indexOf (70 bytes)
   7145    5     n 0       java.lang.System::arraycopy (native)   (static)
   7145    8       3       java.lang.Object::<init> (1 bytes)
   7145    7       3       java.lang.Math::min (11 bytes)
   7145    6       1       java.lang.ref.Reference::get (5 bytes)
   7145    9       3       java.lang.String::equals (81 bytes)
   7145   10       1       java.lang.ThreadLocal::access$400 (5 bytes)

This looks like the usual C1 compilation.  If I use -verbose:class
no Graal classes are listed.

So what do I have to do in order to make the JVM use Graal, so that
I can debug it?

Andrew.