diff --git a/llvm/lib/Transforms/Vectorize/LoopVectorize.cpp b/llvm/lib/Transforms/Vectorize/LoopVectorize.cpp
--- a/llvm/lib/Transforms/Vectorize/LoopVectorize.cpp
+++ b/llvm/lib/Transforms/Vectorize/LoopVectorize.cpp
@@ -3049,6 +3049,11 @@
   }
   if (isa<PossiblyExactOperator>(NewInst))
     NewInst->setIsExact(false);
+  if (isa<FPMathOperator>(NewInst)) {
+    NewInst->setHasNoNaNs(false);
+    NewInst->setHasNoInfs(false);
+    NewInst->setHasNoSignedZeros(false);
+  }
 }
 
 void InnerLoopVectorizer::scalarizeInstruction(Instruction *Instr,