[LLVMdev] UNREACHABLE executed at MCJIT.cpp:322!

[Yaron Keren]

MCJIT::runFunction supports only main-style argument passing but not other
cases like the JIT.
These types of arguments will work:

(int, char**, char**)
(int, char**)
(int)
(void)

The general case is not supported since it requires creating a small stub
function, compiling and running it on the fly, supported by JIT but not
MCJIT.

However, with the supported calling sequences, you can probably replace the
char** with a void* to a structure so that practically anything can be
passed to your function inside the structure.

Yaron



2013/11/8 edA-qa mort-ora-y <eda-qa at disemia.com>

> I'm trying to get MCJIT working but I get the following errors:
>         Full-featured argument passing not supported yet!
>         UNREACHABLE executed at MCJIT.cpp:322!
> I'm sure the first one will be a problem, but the second one prevents me
> from testing anything. I don't know how to fix the problem.
>
> My code works when using the non-MC JIT, and I added to my EngineBuilder:
>         .setUseMCJIT(true)
>
> Reading from a tutorial* I also tried finalizing the engine object:
>         ee->finalizeObject()
>
> I'd like to get this working since in the release notes for 3.4 it
> indicates exception handling has been removed from the old JIT. I need
> exception handling support and would like to get MCJIT working prior to
> upgrading to 3.4 later.
>
>
> *http://blog.llvm.org/2013/07/using-mcjit-with-kaleidoscope-tutorial.html
>
> --
> edA-qa mort-ora-y
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