Michael Zolotukhin 8e7e76729d [LoopSimplify] Preserve LCSSA when merging exit blocks. ...

Summary:
This fixes PR26682. Also add LCSSA as a preserved pass to LoopSimplify,
that looks correct to me and allows to write a test for the issue.

Reviewers: chandlerc, bogner, sanjoy

Subscribers: llvm-commits

Differential Revision: http://reviews.llvm.org/D21112

llvm-svn: 272224

2016-06-08 23:13:21 +00:00

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