Hi all, I have a loadable ModulePass which does transformations, and I would like to use IVUsers analysis within it. I noticed when I try to do this (via the usual addRequired<IVUsers>() and getAnalysis<IVUsers>(*F)), opt fails an assert: opt: /home/tcreech/build/llvm-2.9/include/llvm/PassAnalysisSupport.h:239: AnalysisType& llvm::Pass::getAnalysisID(const void*, llvm::Function&) [with AnalysisType = llvm::LoopInfo]: Assertion `ResultPass && "Unable to find requested analysis info"' failed. ...where I was using LoopInfo analysis without trouble before trying to run IVUsers analysis as well. I suspect that I'm somehow doing something that LLVM just doesn't allow. I know that LLVM allows getting FunctionPass analysis from a ModulePass, but can I also get LoopPass analysis from a ModulePass? Thanks in advance for any help, Tim Creech