[PATCH] D156845: [ConstantRange] Calculate precise range for shl by -1

[Allen zhong via Phabricator via llvm-commits]

Allen marked 2 inline comments as done.
Allen added inline comments.


================
Comment at: llvm/lib/IR/ConstantRange.cpp:1499
+    std::swap(Min, Max);
+  }
   return ConstantRange::getNonEmpty(std::move(Min), std::move(Max) + 1);
----------------
goldstein.w.n wrote:
> (style)
> ```
> // Comment
> if (Neg)
>    std::swap(...)
> ```
Done, thanks


CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D156845/new/

https://reviews.llvm.org/D156845