[llvm-dev] Debugging JIT'ed code with ORC JIT?

[Lang Hames via llvm-dev]

Hi Connor,

...The LLVM documentation has a page at
>     llvm.org/docs/DebuggingJITedCode.html
> showing an example of using gdb to debug MCJIT’ed code, but has no mention
> of ORC JIT.


What debugging support MCJIT has is provided by the RuntimeDyld utility,
which ORC shares. I would expect anything in that document to apply to ORC
as well, though I haven't tested it personally.

For what it's worth, this is something I'm interested in and hope to make
some progress on in tree in the not too distant future.

-- Lang.

On Mon, Oct 9, 2017 at 12:27 PM, Jameson Nash via llvm-dev <
llvm-dev at lists.llvm.org> wrote:

> That is correct – there is no built-in support. You have to provide your
> own Registrar to the ObjectLinkingLayer to provide this sort of
> functionality. (For example JuliaLang does that at https://github.com/
> JuliaLang/julia/blob/1216e5f60cd2b23e29856b5227399a
> b0f3abef76/src/jitlayers.cpp#L437, in addition to registering the
> function pointer and object file info in several other places).
>
>
> On Sun, Oct 8, 2017 at 11:48 PM Connor Gray via llvm-dev <
> llvm-dev at lists.llvm.org> wrote:
>
>> Hi,
>>
>> I’m wondering if it’s possible to debug code JIT’ed with the newer ORC
>> JIT. The LLVM documentation has a page at
>>
>>     llvm.org/docs/DebuggingJITedCode.html
>>
>> showing an example of using gdb to debug MCJIT’ed code, but has no
>> mention of ORC JIT.
>>
>> From searching around online I’ve gotten the impression that ORC JIT does
>> *not* support providing debugging information to attached debuggers, but no
>> definitive source. Is it the case that ORC JIT in fact does support
>> debugging, and if so, are there examples available; or is my initial
>> impression correct?
>>
>> Thanks,
>> Connor
>> _______________________________________________
>> LLVM Developers mailing list
>> llvm-dev at lists.llvm.org
>> http://lists.llvm.org/cgi-bin/mailman/listinfo/llvm-dev
>>
>
> _______________________________________________
> LLVM Developers mailing list
> llvm-dev at lists.llvm.org
> http://lists.llvm.org/cgi-bin/mailman/listinfo/llvm-dev
>
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.llvm.org/pipermail/llvm-dev/attachments/20171011/879aa0d4/attachment.html>