[PATCH] LoopUnroll: Create sub-loops in LoopInfo

Duncan P. N. Exon Smith dexonsmith at apple.com
Mon Oct 6 15:34:09 PDT 2014

This fixes the crasher in PR20987 by creating sub-loop info in

While the attached patch adds the missing data to `LoopInfo`, I'm not
sure what the contract is with SCEV (which can have a reference to
`LoopInfo`).  Have I created a new problem, or does this look okay?

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