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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">I believe the only thing you can add directly to an Instruction is the source location (via setDebugLoc, not setMetadata).<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">All other instruction-related debug info is currently conveyed by debug-info intrinsics, and the association is by one of the intrinsic operands being the Instruction.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Is this for a front-end? Typically front-ends only add dbg.declare intrinsics, which are attached to the alloca for the relevant variable.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">--paulr<o:p></o:p></span></p>
<p class="MsoNormal"><a name="_MailEndCompose"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></a></p>
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<p class="MsoNormal"><b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif"">From:</span></b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif""> llvm-dev [mailto:llvm-dev-bounces@lists.llvm.org]
<b>On Behalf Of </b>Norbert Dajka via llvm-dev<br>
<b>Sent:</b> Monday, January 14, 2019 9:26 AM<br>
<b>To:</b> llvm-dev@lists.llvm.org<br>
<b>Subject:</b> [llvm-dev] Metadata/DebugInfo in *.ll file<o:p></o:p></span></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">Hi list,<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">I found relevant documentation regarding DebugInfo creation in the LLVM IR bytecode. It can be done for compileunits, functions, and other constructs, with the help of DIBuilder class. However I can't save debug information related to individual
llvm::Instructions. I tried DebugLoc, DILocation setting directly with setMetadata(). I tried other ways, for e.g.: insertDbgValueIntrinsic(). If I set invalid parameters for the call, then the LLVM passes warn me, correctly, so at least I see in the log,
that LLVM tries to assign debuginfo to given instruction. If however I set valid parameters, then I suppose, that the passes drop the debuginfo related to an Instruction.<o:p></o:p></p>
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<p class="MsoNormal">Do you know a surefire way to avoid the drop of instruction related debuginfo?<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">Thanks for your time,<o:p></o:p></p>
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<p class="MsoNormal">Norbert<o:p></o:p></p>
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