[PATCH] D94480: [NFC] [DAGCombine] Correct the result for sqrt even the iteration is zero

[Dave Green via Phabricator via llvm-commits]

dmgreen accepted this revision.
dmgreen added a comment.
This revision is now accepted and ready to land.

> but someone who knows AArch should comment.

Sorry, I had no idea what this was and what it was doing. I see now, and this does indeed look like an NFC.

It turns out that on AArch64 it is controlled by a subtarget feature that is never enabled, so won't be used without being forced. Not handling IEEE denomal inputs might be a mistake, I'm not sure. This patch is an NFC in that regards though.

LGTM


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