[PATCH] D65474: [SCEV] Return zero from computeConstantDifference(X, X)

[Sanjoy Das via Phabricator via llvm-commits]

sanjoy requested changes to this revision.
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Let's make this a friend function, I'm already not super happy with how wide SCEV's API is.  You can make the `diff` lambda a member function of `ScalarEvolutionsTest` to make this work.

Other than that lgtm.


Repository:
  rL LLVM

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  https://reviews.llvm.org/D65474/new/

https://reviews.llvm.org/D65474