[PATCH] D16838: [LoopUnrolling] Try harder to avoid rebuilding LCSSA when possible.

[Michael Zolotukhin via llvm-commits]

mzolotukhin updated this revision to Diff 46858.
mzolotukhin added a comment.

- Add a comment per Mehdi's request.


http://reviews.llvm.org/D16838

Files:
  lib/Transforms/Utils/LoopUnroll.cpp

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