From rkennke at redhat.com  Wed Oct 11 14:27:52 2017
From: rkennke at redhat.com (Roman Kennke)
Date: Wed, 11 Oct 2017 16:27:52 +0200
Subject: JEP draft: Remove Shark compiler
Message-ID: <b782806d-85e9-b3cd-0918-4d5a742fb540@redhat.com>

I have drafted a JEP with the intention to remove the Shark compiler:

https://bugs.openjdk.java.net/browse/JDK-8189173

I would like to get some opinions here before I submit this JEP for 
real. In particular:

- If anybody has a need for Shark
- If anybody wants to step up to maintain it

speak up now!

Further, if you have anything that is missing or needs to be changed in 
the JEP draft, please let me know.

Thanks,

Roman


From aph at redhat.com  Wed Oct 11 15:07:04 2017
From: aph at redhat.com (Andrew Haley)
Date: Wed, 11 Oct 2017 16:07:04 +0100
Subject: JEP draft: Remove Shark compiler
In-Reply-To: <b782806d-85e9-b3cd-0918-4d5a742fb540@redhat.com>
References: <b782806d-85e9-b3cd-0918-4d5a742fb540@redhat.com>
Message-ID: <ecf6ebbb-96e5-bad2-d5b4-58b8b95028ab@redhat.com>

On 11/10/17 15:27, Roman Kennke wrote:
> I would like to get some opinions here before I submit this JEP for 
> real. In particular:
> 
> - If anybody has a need for Shark
> - If anybody wants to step up to maintain it
> 
> speak up now!

Kill it.  It was good while it lasted, but it's based on an obsolete
JIT interface in LLVM.

-- 
Andrew Haley
Java Platform Lead Engineer
Red Hat UK Ltd. <https://www.redhat.com>
EAC8 43EB D3EF DB98 CC77 2FAD A5CD 6035 332F A671

From gnu.andrew at redhat.com  Wed Oct 11 15:33:35 2017
From: gnu.andrew at redhat.com (Andrew Hughes)
Date: Wed, 11 Oct 2017 16:33:35 +0100
Subject: JEP draft: Remove Shark compiler
In-Reply-To: <b782806d-85e9-b3cd-0918-4d5a742fb540@redhat.com>
References: <b782806d-85e9-b3cd-0918-4d5a742fb540@redhat.com>
Message-ID: <CABi63P6oJzS=rJPS0aa3_LJDjEO222rUjHQvkD=M3mi-fYxHjw@mail.gmail.com>

On 11 October 2017 at 15:27, Roman Kennke <rkennke at redhat.com> wrote:
> I have drafted a JEP with the intention to remove the Shark compiler:
>
> https://bugs.openjdk.java.net/browse/JDK-8189173
>
> I would like to get some opinions here before I submit this JEP for real. In
> particular:
>
> - If anybody has a need for Shark
> - If anybody wants to step up to maintain it
>
> speak up now!
>
> Further, if you have anything that is missing or needs to be changed in the
> JEP draft, please let me know.
>
> Thanks,
>
> Roman
>

Yeah, I agree it's been superseded for the use cases it was originally
created for.
Personally, I've never been able to get the right combination of Shark and LLVM
to even build it.

On the Zero note, I'm in favour of keeping that alive, even if we reach a point
where we don't need to ship VMs that use it. It comes in useful when porting
to new architectures and also as a fallback where bugs are encountered
with JIT ports.
-- 
Andrew :)

Senior Free Java Software Engineer
Red Hat, Inc. (http://www.redhat.com)

Web Site: http://fuseyism.com
Twitter: https://twitter.com/gnu_andrew_java
PGP Key: ed25519/0xCFDA0F9B35964222 (hkp://keys.gnupg.net)
Fingerprint = 5132 579D D154 0ED2 3E04  C5A0 CFDA 0F9B 3596 4222

From rkennke at redhat.com  Wed Oct 11 15:39:30 2017
From: rkennke at redhat.com (Roman Kennke)
Date: Wed, 11 Oct 2017 17:39:30 +0200
Subject: JEP draft: Remove Shark compiler
In-Reply-To: <CABi63P6oJzS=rJPS0aa3_LJDjEO222rUjHQvkD=M3mi-fYxHjw@mail.gmail.com>
References: <b782806d-85e9-b3cd-0918-4d5a742fb540@redhat.com>
 <CABi63P6oJzS=rJPS0aa3_LJDjEO222rUjHQvkD=M3mi-fYxHjw@mail.gmail.com>
Message-ID: <26ce9e2d-172c-3db3-decd-a897d33f6935@redhat.com>

Am 11.10.2017 um 17:33 schrieb Andrew Hughes:
> On 11 October 2017 at 15:27, Roman Kennke <rkennke at redhat.com> wrote:
>> I have drafted a JEP with the intention to remove the Shark compiler:
>>
>> https://bugs.openjdk.java.net/browse/JDK-8189173
>>
>> I would like to get some opinions here before I submit this JEP for real. In
>> particular:
>>
>> - If anybody has a need for Shark
>> - If anybody wants to step up to maintain it
>>
>> speak up now!
>>
>> Further, if you have anything that is missing or needs to be changed in the
>> JEP draft, please let me know.
>>
>> Thanks,
>>
>> Roman
>>
> Yeah, I agree it's been superseded for the use cases it was originally
> created for.
> Personally, I've never been able to get the right combination of Shark and LLVM
> to even build it.
>
> On the Zero note, I'm in favour of keeping that alive, even if we reach a point
> where we don't need to ship VMs that use it. It comes in useful when porting
> to new architectures and also as a fallback where bugs are encountered
> with JIT ports.

Hi Andrew,

I agree about Zero. I have put this under 'non-goals':

"It is not a goal of this JEP to remove the Zero interpreter (which is 
the basis for Shark)."

Roman


From magnus.ihse.bursie at oracle.com  Thu Oct 12 09:13:51 2017
From: magnus.ihse.bursie at oracle.com (Magnus Ihse Bursie)
Date: Thu, 12 Oct 2017 11:13:51 +0200
Subject: JEP draft: Remove Shark compiler
In-Reply-To: <b782806d-85e9-b3cd-0918-4d5a742fb540@redhat.com>
References: <b782806d-85e9-b3cd-0918-4d5a742fb540@redhat.com>
Message-ID: <468e9ddf-50fa-c09c-3f4c-4c175b284c51@oracle.com>

On 2017-10-11 16:27, Roman Kennke wrote:
> I have drafted a JEP with the intention to remove the Shark compiler:
>
> https://bugs.openjdk.java.net/browse/JDK-8189173

Yes please! :-)

/Magnus
>
> I would like to get some opinions here before I submit this JEP for 
> real. In particular:
>
> - If anybody has a need for Shark
> - If anybody wants to step up to maintain it
>
> speak up now!
>
> Further, if you have anything that is missing or needs to be changed 
> in the JEP draft, please let me know.
>
> Thanks,
>
> Roman
>

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From dalibor.topic at oracle.com  Thu Oct 12 12:01:11 2017
From: dalibor.topic at oracle.com (dalibor topic)
Date: Thu, 12 Oct 2017 14:01:11 +0200
Subject: JEP draft: Remove Shark compiler
In-Reply-To: <CABi63P6oJzS=rJPS0aa3_LJDjEO222rUjHQvkD=M3mi-fYxHjw@mail.gmail.com>
References: <b782806d-85e9-b3cd-0918-4d5a742fb540@redhat.com>
 <CABi63P6oJzS=rJPS0aa3_LJDjEO222rUjHQvkD=M3mi-fYxHjw@mail.gmail.com>
Message-ID: <dc14c9b9-88ec-324a-6cb2-587743452d0b@oracle.com>

On 11.10.2017 17:33, Andrew Hughes wrote
> Yeah, I agree it's been superseded for the use cases it was originally
> created for.
> Personally, I've never been able to get the right combination of Shark and LLVM
> to even build it.

Yeah, I'm not aware of anyone doing something with it in that direction 
in the past couple of years, either.

I support removing it, too.

cheers,
dalibor topic

-- 
<http://www.oracle.com> Dalibor Topic | Principal Product Manager
Phone: +494089091214 <tel:+494089091214> | Mobile: +491737185961
<tel:+491737185961>

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