[llvm-dev] MCJIT - missing DataLayout?

[Josh Klontz via llvm-dev]

Pawel,

Hopefully this provides a partial answer: when using MCJIT I set the data
layout for every module. My code looks roughly like:

    TargetRegistry::lookupTarget(sys::getProcessTriple())->
createTargetMachine()->createDataLayout();

-Josh

On Thu, May 5, 2016 at 5:34 AM, Paweł Bylica <llvm-dev at lists.llvm.org>
wrote:

> Hi everyone,
>
> I was happily using MCJIT for over a year until yesterday when I created a
> function call with an argument of a struct type. That caused a crash in
> SelectionDAG around DataLayout::getAlignment().
>
> I remember the noise about the DataLayout started being mandatory. But I
> cannot find precise information.
>
> Should I set the DataLayout in every Module created?
>
> Where can I get the DataLayout for the host process from?
>
> Can a DataLayout instance be shared between modules?
>
> - Paweł
>
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