[LLVMdev] getAnalysis()

Scott Mikula mikula at uiuc.edu
Sun Nov 3 14:48:00 PST 2002

I'm having trouble with using getAnalysis() to access the results of one
pass from within another.  I require the pass to be previously executed
as follows:

void MyPass::getAnalysisUsage(AnalysisUsage &Info) const {

Then I try to use it as follows:

bool MyPass::doInitialization(Module &M) {
        TDDataStructures &dsgraph = getAnalysis<TDDataStructures>();
        return false;

When I run my pass via opt, I get the following assertion error:

Assertion failed: i != AnalysisImpls.size() && "getAnalysis*() called on
an analysis that we not " "'required' by pass!", file
../../include/llvm/Pass.h, line 170

Any idea what I am doing wrong?  Thanks,
Scott Mikula

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