[PATCH] D149590: ValueTracking: Implement computeKnownFPClass for ldexp

[Jay Foad via Phabricator via llvm-commits]

foad accepted this revision.
foad added inline comments.
This revision is now accepted and ready to land.


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Comment at: llvm/lib/Analysis/ValueTracking.cpp:4120
+  if (!Src.isKnownNeverNegSubnormal() && Mode != DenormalMode::getIEEE()) {
+    KnownFPClasses |= fcNegZero;
+    if (Mode.Input == DenormalMode::PositiveZero ||
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Only do this if the input or output mode is preserve-sign or dynamic?


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  https://reviews.llvm.org/D149590/new/

https://reviews.llvm.org/D149590