[llvm-dev] why LoopInfoWrapperPass can not detect all the canonical loops?

[Dong Chen via llvm-dev]

The original cl code contains 2 canonical loops (start from 0 with stride
1). But the analysis pass LoopInfoWrapperPass only detect one of them,
anybody knows why?

The analysis pass LoopInfoWrapperPass is called from a function pass by the
following statements:

LoopInfo& LI = getAnalysis<LoopInfoWrapperPass>().getLoopInfo();

for(LoopInfo::iterator l = LI.begin(), lend = LI.end(); l != lend; ++l){

    PHINode* phi = (*l)->getCanonicalInductionVariable();

}
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