[PATCH] D28927: [ValueTracking] Add comment that CannotBeOrderedLessThanZero does the wrong thing for powi.

[Hal Finkel via Phabricator via llvm-commits]

hfinkel added a comment.

In https://reviews.llvm.org/D28927#651309, @jlebar wrote:

> Update comments.  I made them shorter and added links to the bug.
>
> I think this is an appropriate amount of brevity while still giving a reader
>  have some clue what's going on, but lmk what you think.


Looks reasonable to me. @efriedma ?


https://reviews.llvm.org/D28927