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

[Renato Golin]

In http://reviews.llvm.org/D9046#157023, @karthikthecool wrote:

> Will wait for your/James input on if to move the enums into namespace/structure.


Yes, and maybe @aschwaighofer, too.

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


Good. Thanks!

> 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.


Excellent. Looking forward to seeing it.

cheers,
--renato


http://reviews.llvm.org/D9046

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