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Hi Geoff, How was it handled before your change? Were we just lucky that insert points always matched? Would it be possible to move all the logic for finding a proper insertion into SCEVExpander? I think that is ultimately the best solution for this, but I have to admit I looked into this code a while ago. Michael > On Mar 23, 2016, at 9:22 AM, Geoff Berry via llvm-dev <llvm-dev at

Hi All, I've run into what appears to be a bug in ScalarEvolution, but I'm not sure if it is instead caused by me missing an implicit assumption between LSR and SCEV. This issue is caused by the change D18001 <http://reviews.llvm.org/D18001> , which is an attempt to increase SCEV-inserted instruction re-use by picking a more canonical insertion position in the case where a new