RFR: 8264806: Remove the experimental JIT compiler [v3]

[Doug Simon]

On Mon, 12 Apr 2021 22:10:06 GMT, Vladimir Kozlov <kvn at openjdk.org> wrote:

>> As part of [JEP 410](http://openjdk.java.net/jeps/410) remove code related to Java-based JIT compiler (Graal) from JDK:
>> 
>> - `jdk.internal.vm.compiler` — the Graal compiler 
>> - `jdk.internal.vm.compiler.management` — Graal's `MBean`
>> - `test/hotspot/jtreg/compiler/graalunit` — Graal's unit tests
>> 
>> Remove Graal related code in makefiles.
>> 
>> Note, next two `module-info.java` files are preserved so that the JVMCI module `jdk.internal.vm.ci` continues to build:
>> 
>> src/jdk.internal.vm.compiler/share/classes/module-info.java
>> src/jdk.internal.vm.compiler.management/share/classes/module-info.java
>> 
>> 
>> @AlanBateman suggested that we can avoid it by using Module API to export packages at runtime . It requires changes in GraalVM's JVMCI too so I will file followup RFE to implement it.
>> 
>> Tested hs-tier1-4
>
> Vladimir Kozlov has updated the pull request incrementally with one additional commit since the last revision:
> 
>   Restore Compiler::isGraalEnabled()

Approved.

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

PR: https://git.openjdk.java.net/jdk/pull/3421