[llvm-dev] Usage of LLJIT & Orc v2 by new end-user

Stefan Gränitz via llvm-dev llvm-dev at lists.llvm.org
Sun Apr 7 16:14:14 PDT 2019

Hi Daniel, in case you are still curious, I finished the update of my
JitFromScratch example project (mostly):

Much of it is based on LLJIT and you can find a few examples for event
handling, like object emitted/loaded.

Hope it helps

On 3/31/19 12:13 AM, Daniel Chapiesky via llvm-dev wrote:
> Hello,
> LLJIT and Orc v2 represent, to me, a great advancement for use of JIT
> in my projects where I need granular control of practically everything.
> Having lost my mind with glee after watching "Updating ORC JIT for
> Concurrency", I eagerly downloaded the latest git version to examine
> the LLJIT code.
> Mentioned at the end of the video was that documentation was being
> worked on and would be forthcoming.
> Question 1: Is the draft documentation for LLJIT/Orc v2 available for
> review even in its unfinished state... I ask because I need it... like
> bad.
> Learning from code examples as in lli.cpp as well as the doxygen docs
> is all well and good, but ancillary docs from the author would be
> invaluable, even in unfinished form.
> I volunteer to review and use this documentation as an unwashed noob
> to Orc v2/LLJIT and give my best take on clarity and robustness.
> The video showed a tool which was awesome.
> The most important thing it demonstrated, again to me, was granular
> events being emitted at each point in the JIT process...  these event
> messages are what made me jump for joy...
> However, looking at LLJIT, I am at a loss as to how to implement this
> kind of event messaging myself....  to be honest, I got lost
> understanding the error failure system and am still working on
> becoming proficient in its use....
> Question 2: Are the event emitters there and I am being daft? Or were
> the events depicted in the video part of a code base that is yet to be
> released (if ever)?
> I will continue to enthusiastically explore and work with LLJIT, but
> any help in regards to additional documentation would be greatly
> appreciated.
> Excellent work so far.
> Cheers,
> Daniel Chapiesky
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