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<p class="MsoNormal">Hello,<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal" style="text-autospace:none">Finally I was able to test the suggestion of deleting the body. So I did:<br>
<span style="font-size:9.5pt;font-family:Consolas;color:black"> mainModue->getFunction(</span><span style="font-size:9.5pt;font-family:Consolas;color:#A31515">"?hello_worldEx@@YAHXZ"</span><span style="font-size:9.5pt;font-family:Consolas;color:black">)->setLinkage(llvm::</span><span style="font-size:9.5pt;font-family:Consolas;color:#2B91AF">GlobalValue</span><span style="font-size:9.5pt;font-family:Consolas;color:black">::</span><span style="font-size:9.5pt;font-family:Consolas;color:#2B91AF">LinkageTypes</span><span style="font-size:9.5pt;font-family:Consolas;color:black">::</span><span style="font-size:9.5pt;font-family:Consolas;color:darkslategray">ExternalLinkage</span><span style="font-size:9.5pt;font-family:Consolas;color:black">);<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:9.5pt;font-family:Consolas;color:black"> mainModue->getFunction(</span><span style="font-size:9.5pt;font-family:Consolas;color:#A31515">"?hello_worldEx@@YAHXZ"</span><span style="font-size:9.5pt;font-family:Consolas;color:black">)->deleteBody();<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:9.5pt;font-family:Consolas;color:black"><o:p> </o:p></span></p>
<p class="MsoNormal">Wit the result, that the function “hello_worldEx” disappeared completely – it was not set to an external function which I could resolve again.<o:p></o:p></p>
<p class="MsoNormal">“setLinkage” seems not to influence the code at all<o:p></o:p></p>
<p class="MsoNormal">“deleteBody” deletes the functions but also all calls to it…<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">So what can I do?<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Kind greetings<o:p></o:p></p>
<p class="MsoNormal">Björn<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><b>From:</b> Philip Pfaffe <philip.pfaffe@gmail.com> <br>
<b>Sent:</b> Donnerstag, 13. Dezember 2018 15:01<br>
<b>To:</b> Gaier, Bjoern <Bjoern.Gaier@horiba.com><br>
<b>Cc:</b> Boldizsar.Palotas@esa.int; llvm-dev <llvm-dev@lists.llvm.org><br>
<b>Subject:</b> Re: [llvm-dev] Setting a function in a module to extern<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">You need to delete the body of the function then.<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">Cheers,<o:p></o:p></p>
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<p class="MsoNormal">Philip<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">On Thu, Dec 13, 2018 at 2:30 PM Gaier, Bjoern via llvm-dev <<a href="mailto:llvm-dev@lists.llvm.org">llvm-dev@lists.llvm.org</a>> wrote:<o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">But in my module this function already exist… I first want to delete it but without also deleting the calls to it…<o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> <o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> <o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><b>From:</b>
<a href="mailto:Boldizsar.Palotas@esa.int" target="_blank">Boldizsar.Palotas@esa.int</a> <<a href="mailto:Boldizsar.Palotas@esa.int" target="_blank">Boldizsar.Palotas@esa.int</a>>
<br>
<b>Sent:</b> Donnerstag, 13. Dezember 2018 10:53<br>
<b>To:</b> Gaier, Bjoern <<a href="mailto:Bjoern.Gaier@horiba.com" target="_blank">Bjoern.Gaier@horiba.com</a>><br>
<b>Cc:</b> LLVM Developers Mailing List <<a href="mailto:llvm-dev@lists.llvm.org" target="_blank">llvm-dev@lists.llvm.org</a>><br>
<b>Subject:</b> Re: [llvm-dev] Setting a function in a module to extern<o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> <o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:10.0pt;font-family:"Arial",sans-serif">I think you just need to llvm::Function::Create(Type, Linkage, Name, Module) it and not add any basic blocks to it.</span>
<br>
<br>
<span style="font-size:10.0pt;font-family:"Arial",sans-serif">Boldizsár Palotás</span>
<br>
<br>
<br>
<br>
<span style="font-size:9.0pt;font-family:"Arial",sans-serif;color:#5F5F5F">From: </span><span style="font-size:9.0pt;font-family:"Arial",sans-serif">"Gaier, Bjoern via llvm-dev" <<a href="mailto:llvm-dev@lists.llvm.org" target="_blank">llvm-dev@lists.llvm.org</a>></span>
<br>
<span style="font-size:9.0pt;font-family:"Arial",sans-serif;color:#5F5F5F">To: </span><span style="font-size:9.0pt;font-family:"Arial",sans-serif">LLVM Developers Mailing List <<a href="mailto:llvm-dev@lists.llvm.org" target="_blank">llvm-dev@lists.llvm.org</a>></span>
<br>
<span style="font-size:9.0pt;font-family:"Arial",sans-serif;color:#5F5F5F">Date: </span><span style="font-size:9.0pt;font-family:"Arial",sans-serif">2018.12.13 08:14</span>
<br>
<span style="font-size:9.0pt;font-family:"Arial",sans-serif;color:#5F5F5F">Subject: </span><span style="font-size:9.0pt;font-family:"Arial",sans-serif">[llvm-dev] Setting a function in a module to extern</span>
<br>
<span style="font-size:9.0pt;font-family:"Arial",sans-serif;color:#5F5F5F">Sent by: </span><span style="font-size:9.0pt;font-family:"Arial",sans-serif">"llvm-dev" <<a href="mailto:llvm-dev-bounces@lists.llvm.org" target="_blank">llvm-dev-bounces@lists.llvm.org</a>></span>
<o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;margin-bottom:12.0pt"> <o:p></o:p></p>
<p style="margin:0cm;margin-bottom:.0001pt">Hello again,<o:p></o:p></p>
<p style="margin:0cm;margin-bottom:.0001pt"> <o:p></o:p></p>
<p style="margin:0cm;margin-bottom:.0001pt">as mentioned in a different mail, I’m a beginner with the LLVM and writing a JIT-Client under Windows.
<o:p></o:p></p>
<p style="margin:0cm;margin-bottom:.0001pt"> <o:p></o:p></p>
<p style="margin:0cm;margin-bottom:.0001pt">In my llvm::Module I have a certain function – now I want to delete this function, but keep all the calls and references to it. I kind of want to set the function to an external function.<o:p></o:p></p>
<p style="margin:0cm;margin-bottom:.0001pt">Is this possible?<o:p></o:p></p>
<p style="margin:0cm;margin-bottom:.0001pt"> <o:p></o:p></p>
<p style="margin:0cm;margin-bottom:.0001pt">Kind greetings<o:p></o:p></p>
<p style="margin:0cm;margin-bottom:.0001pt">Björn<o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;margin-bottom:12.0pt"><br>
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