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

[Sanjay Patel via Phabricator via llvm-commits]

spatel added a comment.

In D139785#4016955 <https://reviews.llvm.org/D139785#4016955>, @lebedev.ri wrote:

> 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)?

Sure - see updated text. Let me know if you'd like to see something else or different.


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