[PATCH] D61622: [FastISel][X86] If selectFNeg fails, fall back to SelectionDAG not treating it as an fsub.

[Craig Topper via Phabricator via llvm-commits]

craig.topper added a comment.

In D61622#1492790 <https://reviews.llvm.org/D61622#1492790>, @cameron.mcinally wrote:

> Ah, I see it now. Thanks for the explanation.
>
> I'd like to review this, but the FastISel code under the hood is outside of my domain. If no one else chimes in, I'll dig into it tomorrow.


If nothing else, I think you can at least confirm this returns things back to the behavior that would have existed prior to r345295


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