[PATCH] D19391: transform obscured FP sign bit ops into a fabs/fneg using TLI hook

[David Majnemer via llvm-commits]

majnemer added a comment.

IIRC, I asked you to add support for `fabs` to `computeKnownBits` when you added this canonicalization.

Seeing as how the canonicalization is removed, I think we should undo this aspect of `computeKnownBits`.


http://reviews.llvm.org/D19391