[PATCH] D59193: [ConstantRange] Add overflow check helpers

[Nikita Popov via Phabricator via llvm-commits]

nikic added a comment.

@lebedev.ri I've implemented the following code for exhaustive checking on 4-bit numbers: https://gist.github.com/nikic/3d37a4742a8685c5dd101524f928fe58 The source of truth are APInt uadd_ov and friends.

Is this something I should include in the patch (possibly reduced to 3-bit testing) or is this okay as a one-off test?


Repository:
  rL LLVM

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  https://reviews.llvm.org/D59193/new/

https://reviews.llvm.org/D59193