[PATCH] D15059: [IndVars] Have getInsertPointForUses preserve LCSSA

[Sanjoy Das via llvm-commits]

sanjoy created this revision.
sanjoy added reviewers: hfinkel, mzolotukhin.
sanjoy added a subscriber: llvm-commits.

Also add a stricter post-condition for IndVarSimplify.

Fixes PR25578.  Test case by Michael Zolotukhin.

http://reviews.llvm.org/D15059

Files:
  include/llvm/Analysis/LoopInfo.h
  lib/Analysis/LoopInfo.cpp
  lib/Transforms/Scalar/IndVarSimplify.cpp
  test/Transforms/IndVarSimplify/pr25578.ll

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