<html><head></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; ">It is ModulePass with AnalysisUsage of CallGraph<br><div>
<span class="Apple-style-span" style="border-collapse: separate; color: rgb(0, 0, 0); font-family: Helvetica; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: 2; text-align: -webkit-auto; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-border-horizontal-spacing: 0px; -webkit-border-vertical-spacing: 0px; -webkit-text-decorations-in-effect: none; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px; font-size: medium; "><span class="Apple-style-span" style="border-collapse: separate; color: rgb(0, 0, 0); font-family: Helvetica; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: 2; text-align: -webkit-auto; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-border-horizontal-spacing: 0px; -webkit-border-vertical-spacing: 0px; -webkit-text-decorations-in-effect: none; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px; font-size: medium; "><div style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; "><div></div><span class="Apple-style-span" style="border-collapse: separate; color: rgb(0, 0, 0); font-family: Helvetica; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: 2; text-align: -webkit-auto; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-border-horizontal-spacing: 0px; -webkit-border-vertical-spacing: 0px; -webkit-text-decorations-in-effect: none; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px; font-size: medium; "><div style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; "><div>Yours sincerely,</div><div>Kadysev Mikhail</div></div></span></div></span></span>
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<br><div><div>22.04.2012, Χ 5:20, Nick Lewycky ΞΑΠΙΣΑΜ(Α):</div><br class="Apple-interchange-newline"><blockquote type="cite"><div>νΙΘΑΙΜ wrote:<br><blockquote type="cite">Thanks, but I replaceAllUsesWith() - works well, but I still get bug in<br></blockquote><blockquote type="cite">eraseFromParent():<br></blockquote><blockquote type="cite"><br></blockquote><blockquote type="cite">While deleting: i32 (%class.B*, i32)* %_ZN1B1xEi<br></blockquote><blockquote type="cite">An asserting value handle still pointed to this value!<br></blockquote><blockquote type="cite">UNREACHABLE executed at /Users/neonomaly/LLVM/LLVM/lib/VMCore/Value.cpp:561!<br></blockquote><br>The replaceAllUsesWith + eraseFromParent pattern remains correct, but there's more to the story than the parts we've focused on. This error means that there's some other code that is holding a pointer to the function you tried to delete, but is using AssertingVH to do so, so as to catch errors exactly like this producing a dangling pointer.<br><br>The error message doesn't tell us who owns the AssertingVH (indeed, the asserting-vh doesn't know, much like a pointer doesn't know who owns it).<br><br>So, under what circumstance are you doing this deletion? Is it inside a FunctionPass, or another kind of Pass? Are you using AssertingVH's or calling other code that is? Such as ValueMap's, or some llvm analysis pass which stores an AssertingVH?<br><br>Nick<br><br><blockquote type="cite"><br></blockquote><blockquote type="cite"><br></blockquote><blockquote type="cite">Yours sincerely,<br></blockquote><blockquote type="cite">Kadysev Mikhail<br></blockquote><blockquote type="cite"><br></blockquote><blockquote type="cite">21.04.2012, Χ 23:45, Nick Lewycky ΞΑΠΙΣΑΜ(Α):<br></blockquote><blockquote type="cite"><br></blockquote><blockquote type="cite"><blockquote type="cite">νΙΘΑΙΜ wrote:<br></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><blockquote type="cite">How correctly remove function from module?<br></blockquote></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><blockquote type="cite">For example:<br></blockquote></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><blockquote type="cite"><br></blockquote></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><blockquote type="cite">int f1(int x) {<br></blockquote></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><blockquote type="cite">...<br></blockquote></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><blockquote type="cite">a = f2(smth);<br></blockquote></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><blockquote type="cite">...<br></blockquote></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><blockquote type="cite">}<br></blockquote></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><blockquote type="cite">int f2 (int y) {<br></blockquote></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><blockquote type="cite">...<br></blockquote></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><blockquote type="cite">b = f1(smth);<br></blockquote></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><blockquote type="cite">...<br></blockquote></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><blockquote type="cite">}<br></blockquote></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><blockquote type="cite"><br></blockquote></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><blockquote type="cite">I need delete from module both f1 and f2. They haven't uses in other<br></blockquote></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><blockquote type="cite">part of module, but I can't delete them with eraseFromParent, because<br></blockquote></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><blockquote type="cite">they are use each other.<br></blockquote></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><br></blockquote></blockquote><blockquote type="cite"><blockquote type="cite">Call X->replaceAllUsesWith(UndefValue::get(X->getType)) before calling<br></blockquote></blockquote><blockquote type="cite"><blockquote type="cite">X->eraseFromParent().<br></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><br></blockquote></blockquote><blockquote type="cite"><blockquote type="cite">Nick<br></blockquote></blockquote><blockquote type="cite"><br></blockquote><blockquote type="cite"><br></blockquote><blockquote type="cite"><br></blockquote><blockquote type="cite">_______________________________________________<br></blockquote><blockquote type="cite">LLVM Developers mailing list<br></blockquote><blockquote type="cite"><a href="mailto:LLVMdev@cs.uiuc.edu">LLVMdev@cs.uiuc.edu</a> <a href="http://llvm.cs.uiuc.edu">http://llvm.cs.uiuc.edu</a><br></blockquote><blockquote type="cite"><a href="http://lists.cs.uiuc.edu/mailman/listinfo/llvmdev">http://lists.cs.uiuc.edu/mailman/listinfo/llvmdev</a><br></blockquote><br></div></blockquote></div><br></body></html>