Thanks for sharing that with me. I'm not setting any data layout, so it has to be the default one. <div><br></div><div>Neil, do you know the behavior you described is on LLVM 3.7?</div><div><br></div><div>So it look that the problem I have is somewhere else. That means I would need LLVM with debug symbols...<br><br><div class="gmail_quote"><div dir="ltr">On Thu, May 5, 2016, 14:51 Neil Henning via llvm-dev <<a href="mailto:llvm-dev@lists.llvm.org">llvm-dev@lists.llvm.org</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
  
    
  
  <div text="#000000" bgcolor="#FFFFFF">
    Another approach that we use - we just wipe the DataLayout on the
    module about to be handed to the ExecutionEngine, and in MCJIT.cpp
    there is a line that says 'if datalayout isDefault() (eg. empty
    string representation "") set it to the datalayout of the Target
    Machine'.<br>
    <br>
    Cheers,<br>
    <br>
    -Neil.</div><div text="#000000" bgcolor="#FFFFFF"><br>
    <br>
    <div>On 05/05/16 13:48, Josh Klontz via
      llvm-dev wrote:<br>
    </div>
    <blockquote type="cite">
      <div dir="ltr">Pawel,
        <div><br>
        </div>
        <div>Hopefully this provides a partial answer: when using MCJIT
          I set the data layout for every module. My code looks roughly
          like:</div>
        <div><br>
        </div>
        <div>   
          TargetRegistry::lookupTarget(sys::getProcessTriple())-><span style="color:rgb(0,0,0)">createTargetMachine</span><span style="color:rgb(0,0,0)">()-></span>createDataLayout<span style="color:rgb(0,0,0)">();</span><br>
        </div>
        <div><span style="color:rgb(0,0,0)"><br>
          </span></div>
        <div><span style="color:rgb(0,0,0)">-Josh</span></div>
      </div>
      <div class="gmail_extra"><br>
        <div class="gmail_quote">On Thu, May 5, 2016 at 5:34 AM, Paweł
          Bylica <span dir="ltr"><<a href="mailto:llvm-dev@lists.llvm.org" target="_blank">llvm-dev@lists.llvm.org</a>></span>
          wrote:<br>
          <blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
            <div dir="ltr">Hi everyone,
              <div><br>
              </div>
              <div>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().</div>
              <div><br>
              </div>
              <div>I remember the noise about the DataLayout started
                being mandatory. But I cannot find precise information.</div>
              <div><br>
              </div>
              <div>Should I set the DataLayout in every Module created?</div>
              <div><br>
              </div>
              <div>Where can I get the DataLayout for the host process
                from?</div>
              <div><br>
              </div>
              <div>Can a DataLayout instance be shared between modules?</div>
              <span><font color="#888888">
                  <div><br>
                  </div>
                  <div>- Paweł</div>
                </font></span></div>
            <br>
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            <br>
          </blockquote>
        </div>
        <br>
      </div>
      <br>
      <fieldset></fieldset>
      <br>
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    <br>
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