[PATCH] D19820: Enable loopreroll for sext of loop control only IV

[Lawrence Hu via llvm-commits]

hulx2000 created this revision.
hulx2000 added reviewers: hfinkel, jmolloy.
hulx2000 added a subscriber: llvm-commits.
hulx2000 set the repository for this revision to rL LLVM.
Herald added a subscriber: mzolotukhin.

    This patch extend loopreroll to allow the instruction chain
    of loop control only IV has sext.


Repository:
  rL LLVM

http://reviews.llvm.org/D19820

Files:
  lib/Transforms/Scalar/LoopRerollPass.cpp
  test/Transforms/LoopReroll/indvar_with_ext.ll

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