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

[edA-qa mort-ora-y]

It was the return type which was i64. I changed it also to my
abi_int_size and it works now.  I have to take care of a few other type
translations, but it looks like MCJIT is working now.

Thank you.


On 08/11/13 18:12, Yaron Keren wrote:
> Something must be wrong with the Function Type. Try to debug into
> runFunction to see which if condition fails. 
> Just a guess, if this is on 64 bit system the first argument type may be
> int64 but needs to be int32.
> 
> Yaron
> 
> 
> 
> 2013/11/8 edA-qa mort-ora-y <eda-qa at disemia.com <mailto:eda-qa at disemia.com>>
> 
>     That makes it more mysterious then since I am indeed only calling a main
>     function.  Perhaps I have to invoke it a different way. Here's my call I
>     have now:
> 
>             auto main = linker->getModule()->getFunction( "main" );
> 
>             std::vector<llvm::GenericValue> args(2);
>             args[0].IntVal = llvm::APInt( platform::abi_int_size, 0 );
>             args[1].PointerVal = nullptr;
>             llvm::GenericValue gv = ee->runFunction( main, args );
> 
> 
> 
>     On 08/11/13 11:14, Yaron Keren wrote:
>     > 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
>     <mailto:eda-qa at disemia.com> <mailto:eda-qa at disemia.com
>     <mailto: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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> 
> 
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