[LLVMdev] ExecutionEngine always comes back NULL

Manuele Conti manuele.conti at sirius-es.it
Tue Jan 8 08:09:53 PST 2013

Sorry I forgot to add code that I use to run code:

/* Executes the AST by running the main function */
GenericValue CodeGenContext::runCode() {
std::cout << "Running code...\n";
ExecutionEngine *ee = EngineBuilder(module).create();
vector<GenericValue> noargs;
GenericValue v = ee->runFunction(mainFunction, noargs);
std::cout << "Code was run.\n";
return v;

Il 08/01/2013 16:38, Manuele Conti ha scritto:
> Hi Rick,
> I had the same problem last week I understand that I didn't 
> initialized target.
> Cheers,
> Manuele
> Il 08/01/2013 16:08, Rick Mann ha scritto:
>> I wrote a little OS X app to assemble some LLVM (human-readable) code 
>> and run it. Unfortunately, my ExecutionEngine won't create. Just 
>> comes back NULL.
>> This is the code that builds it:
>>     http://pastebin.com/8cexgPj7
>> This is the code it seems to successfully assemble, but it can't 
>> build the ExecutionEngine. You can see I tried several different ways 
>> of building it.
>>     http://pastebin.com/tYq4kWX3
>> The module seems to get created properly (you can see the source and 
>> the result of mod->dump()).
>> Is there a dylib that I need to include that has some init code 
>> that's otherwise not invoked? How can I tell why my ExecutionEngine 
>> didn't create? Is there an error code somewhere?
>> I based my code off the HowTouseJIT.cpp example, llvm-as.cpp, and 
>> lli.cpp. I must've overlooked something, but I'm not sure what.
>> Any ideas? Thanks!
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