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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Thanks. Note that there are still a few references to this MDNode scattered throughout the code-base, so if it’s no longer being generated, there may be some
bugs lurking there.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Eli<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></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""> Devang Patel [mailto:dpatel@apple.com]
<br>
<b>Sent:</b> Thursday, February 09, 2012 19:36<br>
<b>To:</b> Bendersky, Eli<br>
<b>Cc:</b> llvmdev@cs.uiuc.edu<br>
<b>Subject:</b> Re: generating !llvm.dbg.sp<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">On Feb 9, 2012, at 7:17 AM, "Bendersky, Eli" <<a href="mailto:eli.bendersky@intel.com">eli.bendersky@intel.com</a>> wrote:<o:p></o:p></p>
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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:black">Hello,<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:black"> <o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:black">According to the documentation here -<a href="http://llvm.org/docs/SourceLevelDebugging.html"><span style="color:purple">http://llvm.org/docs/SourceLevelDebugging.html</span></a>:<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:black"> <o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:black">>> All subprogram descriptors are collected by a named metadata</span><tt><span style="font-size:10.0pt;color:black">!llvm.dbg.sp</span></tt><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:black">.<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:black"> <o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:black">LLVM seems to have lost the ability to generate this metadata node in r126871, when DIFactory was removed.<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:black"> <o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:black">Is this an intended change?
<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">Yes, I'll update the doc.<o:p></o:p></p>
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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:black">We were relying in the existence of this node, and things broke once we switched from LLVM 2.8 to 3.0.<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:black">Is there an alternative location where all the subprogram debug descriptors (DW_TAG_subprogram) can be obtained?<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">You can use DebugInfoFinder from DebugInfo.h. It provides an iterator to walk over all subprograms.<o:p></o:p></p>
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<p class="MsoNormal">-<o:p></o:p></p>
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<p class="MsoNormal">Devang<o:p></o:p></p>
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