diff --git a/llvm/lib/CodeGen/SelectionDAG/SelectionDAG.cpp b/llvm/lib/CodeGen/SelectionDAG/SelectionDAG.cpp
index 6ea2e2708c162..c052754d52c5b 100644
--- a/llvm/lib/CodeGen/SelectionDAG/SelectionDAG.cpp
+++ b/llvm/lib/CodeGen/SelectionDAG/SelectionDAG.cpp
@@ -6233,7 +6233,17 @@ bool SelectionDAG::cannotBeOrderedNegativeFP(SDValue Op) const {
   if (ConstantFPSDNode *C1 = isConstOrConstSplatFP(Op, true))
     return !C1->isNegative();
 
-  return Op.getOpcode() == ISD::FABS;
+  switch (Op.getOpcode()) {
+  case ISD::FABS:
+  case ISD::FEXP:
+  case ISD::FEXP2:
+  case ISD::FEXP10:
+    return true;
+  default:
+    return false;
+  }
+
+  llvm_unreachable("covered opcode switch");
 }
 
 bool SelectionDAG::isEqualTo(SDValue A, SDValue B) const {