<div dir="ltr"><div>I'm not too familiar with the legacy PM, but perhaps you're missing a INITIALIZE_PASS_DEPENDENCY?<br></div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Fri, Oct 2, 2020 at 2:00 AM Ees via llvm-dev <<a href="mailto:llvm-dev@lists.llvm.org">llvm-dev@lists.llvm.org</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">
  

    
  
  <div>
    <p>Hi all,</p>
    <p>I am getting the infamous error:</p>
    <p>Assertion `ResultPass && "getAnalysis*() called on an
      analysis that was not " "'required' by pass!"' <br>
    </p>
    <p>but i really don't understand why.</p>
    <p>I have:</p>
    <div>
      <div><span style="color:rgb(56,106,195)">void</span><span style="color:rgb(53,53,53)"> InstrumentationPass</span><span style="color:rgb(53,53,53)">::</span><span style="color:rgb(132,49,197)">getAnalysisUsage</span><span style="color:rgb(53,53,53)">(</span><span style="color:rgb(132,49,197)">llvm</span><span style="color:rgb(53,53,53)">::</span><span style="color:rgb(22,63,228)">AnalysisUsage</span><span style="color:rgb(53,53,53)"> </span><span style="color:rgb(56,106,195)">&</span><span style="color:rgb(224,108,117)">AU</span><span style="color:rgb(53,53,53)">)
        </span><span style="color:rgb(56,106,195)">const</span><span style="color:rgb(53,53,53)"> {</span></div>
      <div><span style="color:rgb(53,53,53)">    AU.</span><span style="color:rgb(132,49,197)">setPreservesAll</span><span style="color:rgb(53,53,53)">();<br>
        </span></div>
      <div><span style="color:rgb(53,53,53)">    AU.addRequired</span><span style="color:rgb(56,106,195)"><</span><span style="color:rgb(53,53,53)">DetectKernelsPass</span><span style="color:rgb(56,106,195)">></span><span style="color:rgb(53,53,53)">();</span></div>
      <div><span style="color:rgb(53,53,53)">    AU.addRequired</span><span style="color:rgb(56,106,195)"><</span><span style="color:rgb(53,53,53)">SimplifyGEPPass</span><span style="color:rgb(56,106,195)">></span><span style="color:rgb(53,53,53)">()</span></div>
    </div>
    <p>DetectKernelsPass (ModulePass) is a simple analysis pass that
      gathers kernel functions. SimplifyGEPPass (FunctionPass) performs
      some transformations.<br>
    </p>
    <p>InstrumentationPass (ModulePass) is using the others like:</p>
    <div>auto
      kernels = getAnalysis<DetectKernelsPass>().getKernels();</div>
    <div>for
      ( auto* kernel : kernels)</div>
    <div>   
      getAnalysis<SimplifyGEPPass>().runOnFunction(*kernel);<br>
    </div>
    <p><br>
      DetectKernelsPass works fine but i am getting the error for
      SimplifyGEPPass and i can't figure out why. Are FunctionPasses not
      supposed to be used inside ModulePasses like that? <br>
    </p>
    <p>I also tried some llvm pass (MemorySSAWrapperPass) but i'm
      getting the same error:</p>
    <p>AnalysisType &llvm::Pass::getAnalysisID(llvm::AnalysisID)
      const [AnalysisType = llvm::MemorySSAWrapperPass]: Assertion
      `ResultPass && "getAnalysis*() called on an analysis that
      was not " "'required' by pass!"' f<br>
    </p>
    <p>I would really appreciate some help with this.</p>
    <p>PS. I'm on LLVM 10, building the passes out of tree.</p>
    <p>Ees<br>
    </p>
  </div>

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</blockquote></div>