1 files changed, 6 insertions, 0 deletions
diff --git a/llvm/lib/Analysis/ValueTracking.cpp b/llvm/lib/Analysis/ValueTracking.cpp
index 5279f03..0c8ab4c 100644
--- a/llvm/lib/Analysis/ValueTracking.cpp
+++ b/llvm/lib/Analysis/ValueTracking.cpp
@@ -4507,6 +4507,12 @@ void computeKnownFPClass(const Value *V, const APInt &DemandedElts,
     return;
   }
 
+  if (isa<ConstantAggregateZero>(V)) {
+    Known.KnownFPClasses = fcPosZero;
+    Known.SignBit = false;
+    return;
+  }
+
   // Try to handle fixed width vector constants
   auto *VFVTy = dyn_cast<FixedVectorType>(V->getType());
   const Constant *CV = dyn_cast<Constant>(V);