diff --git a/lib/CodeGen/SelectionDAG/LegalizeFloatTypes.cpp b/lib/CodeGen/SelectionDAG/LegalizeFloatTypes.cpp
index f8340ccc1f6..1d46bf30334 100644
--- a/lib/CodeGen/SelectionDAG/LegalizeFloatTypes.cpp
+++ b/lib/CodeGen/SelectionDAG/LegalizeFloatTypes.cpp
@@ -439,6 +439,7 @@ void DAGTypeLegalizer::SoftenSetCCOperands(SDOperand &NewLHS, SDOperand &NewRHS,
     LC1 = (VT == MVT::f32) ? RTLIB::UO_F32 : RTLIB::UO_F64;
     break;
   case ISD::SETO:
+    LC1 = (VT == MVT::f32) ? RTLIB::O_F32 : RTLIB::O_F64;
     break;
   default:
     LC1 = (VT == MVT::f32) ? RTLIB::UO_F32 : RTLIB::UO_F64;