[llvm-dev] Noob: need help with go bindings

Andrew Wilkins via llvm-dev llvm-dev at lists.llvm.org
Thu Jun 30 00:56:51 PDT 2016

On Thu, 30 Jun 2016 at 01:52 Brian Picciano <mediocregopher at gmail.com>

> That did it, thanks for the help! For the future is there a set of
> documentation for these bindings, or their equivalent c functions? I tried
> looking but was having trouble finding anything that seemed to match.

Sorry to say, the only docs we have for the Go bindings is
https://godoc.org/llvm.org/llvm/bindings/go/llvm, which you can see is
woefully inadequate. Contributions welcome. I'm not aware of docs for the C
API (which Go wraps).


> On Wed, Jun 29, 2016 at 1:35 AM Andrew Wilkins <axwalk at gmail.com> wrote:
>> On Wed, 29 Jun 2016 at 00:32 Brian Picciano via llvm-dev <
>> llvm-dev at lists.llvm.org> wrote:
>>> I have the following code to generate a really basic IR:
>>> http://gobin.io/LtdJ
>>> And the output I get from it is: http://gobin.io/XgkH
>>> That IR code which is dumped seems to work fine if I do llc then gcc on
>>> it, so I'm not sure why it won't work through the engine. This is my first
>>> time using LLVM so I'm pretty new with all of it, any help would be greatly
>>> appreciated. Thanks!
>> Hi Brian,
>> The issue here is that "NewExecutionEngine" will create either an MCJIT-
>> or an interpreter-based execution engine, and only the former will be able
>> to resolve symbols in the parent process. MCJIT will only be used if you
>> have called the appropriate initialisation functions first. If you add the
>> following to the top of your main() function, it should work:
>> LinkInMCJIT() InitializeNativeTarget() InitializeNativeAsmPrinter()
>> Cheers,
>> Andrew
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