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<p>Is this needed if i'm building out of tree? In any case, i am not
doing INITIALIZE_PASS_DEPENDENCY for DetectKernelsPass and it does
not complain about it. It basically only complains for any
Function pass i try to use.<br>
</p>
<p>Ees</p>
<div class="moz-cite-prefix">On 02-10-2020 19:54, Arthur Eubanks
wrote:<br>
</div>
<blockquote type="cite"
cite="mid:CAPW48sqSVqZ6fgsiNfds9+3UPguN93TPHOUy=98hAGbd=3Js6Q@mail.gmail.com">
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<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"
moz-do-not-send="true">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>
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