[PATCH] D139785: [InstCombine] preserve signbit semantics of NAN with fold to fabs

[Roman Lebedev via Phabricator via llvm-commits]

lebedev.ri added a comment.

Could you add a relevant quote of the IEE spec into the description,
and add an example with +NaN and -NaN and describe the outcome (kinda like alive2 counter-example)?


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https://reviews.llvm.org/D139785