[PATCH] D147871: ValueTracking: Implement computeKnownFPClass for sqrt

[Joshua Cranmer via Phabricator via llvm-commits]

jcranmer-intel added inline comments.


================
Comment at: llvm/lib/Analysis/ValueTracking.cpp:4449
+
+        // Any negative value besides -0 returns a nan.
+        if (KnownSrc.isKnownNeverNaN() && KnownSrc.SignBit &&
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This also includes -subnormal in DAZ=preserve-sign mode.


CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D147871/new/

https://reviews.llvm.org/D147871