Linking two LLVM IR files with native functions

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1

Hi,

I am looking at JIT compiling a Matlab program using LLVM.

I was able to generate the LLVM IR (.ll) for a given Matlab program but this IR has a call to native C++ function.

So I generated the LLVM IR (.ll) for the C++ file containing the native C++ function using clang.

Now, these two .ll files can be linked together by generating .bc files. But I could generate .bc file only for the C++ .ll file but not for Matlab .ll as it says the function definition could not be found…

So how could I link these two .ll files.

Thanks,

Shilpa

2

Now, these two .ll files can be linked together by generating .bc files. But
I could generate .bc file only for the C++ .ll file but not for Matlab .ll
as it says the function definition could not be found...

That's very weird, it looks more like a linker error than an llvm-as
error. What are you running to try and convert the Matlab .ll file to
a .bc.

So how could I link these two .ll files.

Clang should be able to accept .ll files directly (as should
llvm-link, I think): "clang cpp_impl.ll matlab.ll -omatlab".

Cheers.

Tim.