pengfei added a comment. Yes, it is using maxpd/minpd here. Sorry for missing the nan cases. In fact, I doubt about the behavior when using fast math with target intrinsics. In my opinion, target intrinsics are always associated with given instructions (reduce* are exceptions). So the behavior of intrinsics, e.g. respect nans, signaling, rounding, exception etc. are concordance with their associated instructions. That said the fast math flags won't change the behavior of intrinsics. Assume above, I'm happy to set these expansions to fast math. Either keeping the existing implementaion or expansion LGTM.
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