[PATCH] D18867: [IndVarSimplify] Eliminate zext of a signed IV when the IV is known to be non-negative

[Li Huang via llvm-commits]

lihuang updated this revision to Diff 65841.
Herald added a subscriber: sanjoy.

https://reviews.llvm.org/D18867

Files:
  lib/Transforms/Scalar/IndVarSimplify.cpp
  test/Transforms/IndVarSimplify/iv-widen-elim-ext.ll

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