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Dear all,<br>
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<br>
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I write a new LoopPass which wants to use passes including LoopInfoWrapperPass, ScalarEvolutionWrapperPass and LoopAccessLegacyAnalysis.</div>
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Therefore, I implement the following code based on LLVM 9.0.0:</div>
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<span>bool LoopInformationCollect::runOnLoop(Loop *L, LPPassManager &) <br>
</span>
<div>{<br>
</div>
<div><br>
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<div> auto &SE = getAnalysis<ScalarEvolutionWrapperPass>().getSE();<br>
</div>
<div> auto &LI = getAnalysis<LoopInfoWrapperPass>().getLoopInfo();<br>
</div>
<div> // auto *LAA = &getAnalysis<LoopAccessLegacyAnalysis>();<br>
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<div> if (Loop_id.find(L)==Loop_id.end()) // traverse instructions in the block assign instruction ID<br>
</div>
<div> {<br>
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<div> Loop_id[L] = ++Loop_Counter;<br>
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<div> }<br>
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<div> // *Loop_out << "---------------Loop report----------------\n";<br>
</div>
<div> // *Loop_out << LAA->getInfo(L).getReport();<br>
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<div> return false;<br>
</div>
<div>}<br>
</div>
<div><br>
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<div>char LoopInformationCollect::ID = 0; <br>
</div>
<div><br>
</div>
<div>void LoopInformationCollect::getAnalysisUsage(AnalysisUsage &AU) const {<br>
</div>
<div> AU.addRequired<LoopInfoWrapperPass>();<br>
</div>
<div> AU.addRequired<ScalarEvolutionWrapperPass>();<br>
</div>
<div> AU.addRequired<LoopAccessLegacyAnalysis>();<br>
</div>
<div> AU.setPreservesAll();<br>
</div>
<span>}</span><br>
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=====================================================================</div>
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I can make the project with GNU make successfully but get the error "Pass 'Unnamed pass: implement Pass::getPassName()' is not initialized." during runtime. When I remove the line "AU.addRequired<LoopAccessLegacyAnalysis>();" and make the project again,
I run the program successfully. <br>
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Detailed error report is shown below:</div>
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<span>Pass 'Unnamed pass: implement Pass::getPassName()' is not initialized.<br>
</span>
<div>Verify if there is a pass dependency cycle.<br>
</div>
<div>Required Passes:<br>
</div>
<div> Natural Loop Information<br>
</div>
<span> Scalar Evolution Analysis</span><br>
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---------------------------------------------------------------------------------------------------------<br>
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Please note that I am not using "opt" in the terminal to run the passes but utilize PassManager in a main() function. It seems that the problem is caused by "LoopAccessLegacyAnalysis", since I have not faced this problem with other passes. I am wondering
how I can fix this situation.</div>
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Thanks a lot for your time and suggestions!<br>
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<div><font size="2" face="Calibri,sans-serif"><span style="font-size:12pt">Best regards,</span></font><span style="font-size:12pt">
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<div style="margin:0"><font size="2" face="Calibri,sans-serif"><span style="font-size:12pt">Tingyuan LIANG</span></font></div>
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<div style="margin:0"><font size="2" face="Calibri,sans-serif"><span style="font-size:12pt">MPhil Student</span></font></div>
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<div style="margin:0"><font size="2" face="Calibri,sans-serif"><span style="font-size:12pt">Department of Electronic and Computer Engineering</span></font></div>
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<div style="margin:0"><font size="2" face="Calibri,sans-serif"><span style="font-size:12pt">The Hong Kong University of Science and Technology</span></font></div>
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