[PATCH] D13076: [InstCombine] transform masking off of an FP sign bit into a fabs() intrinsic call (PR24886)

[David Majnemer via llvm-commits]

majnemer added a subscriber: majnemer.
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If we will canonicalize away from bitmath, can we please teach `computeKnownBitsFromOperator` how to reason about `llvm.fabs`?  Otherwise, this might be a pessimization.


http://reviews.llvm.org/D13076