[llvm-dev] segfault with HowToUseJIT

[Praveen Velliengiri via llvm-dev]

Hi Frank,
Actually, IR generated in the code is incomplete. IR module must contain
two function definitions but when printing the IRModule you get only
;ModuleID = 'test'
source_filename = "test"


On Tue, 25 Feb 2020 at 03:35, David Blaikie via llvm-dev <
llvm-dev at lists.llvm.org> wrote:

> +Lang, Veteran of the JIT Wars (/owner of LLVM JIT infrastructure) - might
> have some ideas here.
>
> On Mon, Feb 24, 2020 at 1:34 PM Frank Winter via llvm-dev <
> llvm-dev at lists.llvm.org> wrote:
>
>> Hi!
>>
>> I've started looking porting our application which uses LLVM JIT to
>> using LLVM 9 (9.0.1).
>>
>> To begin, I tried running the HowToUseJIT.cpp (example directory)
>> program and it fails with a segfault:
>>
>>
>> ./HowToUseJIT
>> We just constructed this LLVM module:
>>
>> ; ModuleID = 'test'
>> source_filename = "test"
>>
>> Running foo: Segmentation fault (core dumped)
>>
>>
>>
>> Running it through GDB:
>>
>> Program received signal SIGSEGV, Segmentation fault.
>> 0x0000000000404912 in main () at HowToUseJIT.cc:131
>> 131      GenericValue gv = EE->runFunction(FooF, noargs);
>> (gdb) bt
>> #0  0x0000000000404912 in main () at HowToUseJIT.cc:131
>>
>>
>> It seems it fails when the JIT-compiled function gets called.
>>
>>
>>
>> I freshly downloaded LLVM 9.0.1 and build it with the backend "X86". The
>> machine I am running this on is a 'Intel(R) Core(TM) i7-6820HQ CPU @
>> 2.70GHz'
>>
>>
>> Any ideas?
>>
>>
>> Frank
>>
>>
>>
>> _______________________________________________
>> LLVM Developers mailing list
>> llvm-dev at lists.llvm.org
>> https://lists.llvm.org/cgi-bin/mailman/listinfo/llvm-dev
>>
> _______________________________________________
> LLVM Developers mailing list
> llvm-dev at lists.llvm.org
> https://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/20200225/21bfd01d/attachment.html>