[LLVMdev] getAnalysis()

[Scott Mikula]

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 {
        Info.addRequired<TDDataStructures>();
}

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