[PATCH] Refactor identification of reductions and expose them as utility functions

[Karthik Bhat]

Hi Renato,
Thanks for your valuable inputs. I have addressed one of your comments and modified the comments as per your suggestion.
Will wait for your/James input on if to move the enums into namespace/structure.

Yes I have run make check-all on X86 and there are no regressions.

Sure I will update the LoopInterchange pass assuming this change. We wont need any additional refactoring and we can reuse these functions as it is.

Thanks once again for your time and support.

Thanks & Regards
Karthik Bhat


http://reviews.llvm.org/D9046

Files:
  include/llvm/Transforms/Utils/LoopUtils.h
  lib/Transforms/Utils/CMakeLists.txt
  lib/Transforms/Utils/LoopUtils.cpp
  lib/Transforms/Vectorize/LoopVectorize.cpp

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