Call for Discussion: New Project: Galahad

[Ethan McCue]

The c++ javac?

On Tue, Dec 13, 2022 at 10:31 PM Rob Leland <
the.rob.leland+java.net at gmail.com> wrote:

> How will this work going forward ? It sounds as if Graal/GraalVM will now
> be a down stream repository. The reason Graal was removed from the OpenJdk
> was because of the duplicated effort of maintenance. Once this is
> eventually merged will this reintroduce the same amount of synchronization
> work as before ?
>
> Do you envision changes in Graal and javac be performed by the same
> engineer?
>
> Do you envision a time when Graal will be the only compiler , supplanting
> the C++  javac.
>
> Thanks!
>
> On Tue, Dec 13, 2022 at 4:24 AM Douglas Simon <doug.simon at oracle.com>
> wrote:
>
>> I hereby invite discussion of a new Project, Galahad*, whose primary
>> goal is to contribute Java-related GraalVM technologies to the OpenJDK
>> Community and prepare them for possible incubation in a JDK main-line
>> release.
>>
>> The initial focus will be on contributing the latest version of the
>> GraalVM just-in-time (JIT) compiler and integrating it as an
>> alternative to the existing JIT compiler of the HotSpot VM. Later
>> steps will bring in the necessary ahead-of-time (AOT) compilation
>> technology to make this new JIT compiler written in Java available
>> instantly on JVM start and avoid any interference with application
>> heap usage and execution profiling. We also intend to contribute
>> portions of the Native Image technology as a general AOT compilation
>> technology for Java applications. Galahad will pay close attention to
>> Leyden and track the Leyden specification as it evolves.
>>
>> I propose to lead this Project. The initial set of Reviewers will be
>> Gergo Barany, Gilles Duboscq, Christian Humer, Vojin Jovanovic, David
>> Leopoldseder, Tom Rodriguez, Christian Wimmer and Thomas Wuerthinger.
>> The initial set of Committers will be Kim Barrett, Alan Bateman, Larry
>> Cable, Eric Caspole, Roberto Castaneda Lozano, Mandy Chung, Andrew
>> Dinn, Erik Duveblad, Josef Eisl, Francois Farquet, Damon Fenacci,
>> Thomas Garcia, Severin Gehwolf, Aleksandar Gradinac, Ian Graves,
>> Christian Haeubl, Christian Hagedorn, Tobias Hartmann, Dan Heidinga,
>> Peter Hofer, Tobias Holenstein, David Holmes, Alexander Ilin, Vladimir
>> Ivanov, Erik Joelsson, Stefan Johansson, Stefan Karlsson, Roman
>> Kennke, Vladimir Kozlov, Vijay Kulkarni, Ioi Lam, Fengyun Liu, Dean
>> Long, Ashutosh Mehra, Alex Menkov, David Nestorovic, Fabio Niephaus,
>> Erik Osterlund, Loic Ottet, Ekaterina Pavlova, Aleksandar Pejovic,
>> Emanuel Peter, Alfonso Peterssen, Coleen Phillimore, Chris Plummer,
>> Aleksandar Prokopec, Claes Redestad, Ivan Ristovic, John Rose, Roland
>> Schatz, Thomas Schatzl, Christoph Schobesberger, Tom Shull, Boris
>> Spasojevic, Serguei Spitsyn, Lukas Stadler, Codrut Stancu, Jovan
>> Stevanovic, Simon Tooke, Robert Toyonaga, Bernhard Urban-Forster, Igor
>> Veresov, Jorn Vernee, Mikael Vidstedt, Roland Westrelin, Christian
>> Wirth, Paul Woegerer, Foivos Zakkak, Sonia Zaldana Calles, Galder
>> Zamarreno, Yudi Zheng and Patrick Ziegler.
>>
>> This Project will start with a clone of the current JDK main-line
>> release, JDK 20, and track main-line releases going forward. We will
>> incrementally adapt Java-related GraalVM related technologies from the
>> Graal repository[1] and merge them into this clone. The work may
>> include side repositories for experimentation. We expect to deliver
>> Galahad over time, in a series of JEPs that will likely span multiple
>> feature releases.
>>
>> Comments?
>>
>> - Doug
>>
>> * "Galahad is the knight who is chosen to find the Holy Grail.
>> Galahad, in both the Lancelot-Grail cycle and in Malory's retelling,
>> is exalted above all the other knights: he is the one worthy enough to
>> have the Grail revealed to him and to be taken into Heaven."
>> (https://en.wikipedia.org/wiki/Galahad)
>>
>> [1] https://github.com/oracle/graal
>>
>>
>>
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