[PATCH] D112675: [Instcombine] Add patterns to generate fneg(fabs(x)) instead of fcmp/sub/selects (part 1)

[Usman Nadeem via Phabricator via llvm-commits]

mnadeem added a reviewer: efriedma.
mnadeem added a subscriber: efriedma.
mnadeem added a comment.

In D112675#3093663 <https://reviews.llvm.org/D112675#3093663>

> I'm still not clear if the FMF propagation is behaving as well as it could. For example, if the select has nsz, then can it always be added to the fneg?
> https://alive2.llvm.org/ce/z/2Qq6Pz

@efriedma any opinion on this?


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https://reviews.llvm.org/D112675