diff --git a/lib/Target/X86/X86ISelLowering.cpp b/lib/Target/X86/X86ISelLowering.cpp
index a2a140f1b8d..988b55739e0 100644
--- a/lib/Target/X86/X86ISelLowering.cpp
+++ b/lib/Target/X86/X86ISelLowering.cpp
@@ -8483,20 +8483,20 @@ SDValue X86TargetLowering::LowerVSETCC(SDValue Op, SelectionDAG &DAG) const {
     if (SSECC == 8) {
       if (SetCCOpcode == ISD::SETUEQ) {
         SDValue UNORD, EQ;
-        UNORD = DAG.getNode(Opc, dl, VT, Op1, Op0, DAG.getConstant(3, MVT::i8));
-        EQ = DAG.getNode(Opc, dl, VT, Op1, Op0, DAG.getConstant(0, MVT::i8));
+        UNORD = DAG.getNode(Opc, dl, VT, Op0, Op1, DAG.getConstant(3, MVT::i8));
+        EQ = DAG.getNode(Opc, dl, VT, Op0, Op1, DAG.getConstant(0, MVT::i8));
         return DAG.getNode(ISD::OR, dl, VT, UNORD, EQ);
       }
       else if (SetCCOpcode == ISD::SETONE) {
         SDValue ORD, NEQ;
-        ORD = DAG.getNode(Opc, dl, VT, Op1, Op0, DAG.getConstant(7, MVT::i8));
-        NEQ = DAG.getNode(Opc, dl, VT, Op1, Op0, DAG.getConstant(4, MVT::i8));
+        ORD = DAG.getNode(Opc, dl, VT, Op0, Op1, DAG.getConstant(7, MVT::i8));
+        NEQ = DAG.getNode(Opc, dl, VT, Op0, Op1, DAG.getConstant(4, MVT::i8));
         return DAG.getNode(ISD::AND, dl, VT, ORD, NEQ);
       }
       llvm_unreachable("Illegal FP comparison");
     }
     // Handle all other FP comparisons here.
-    return DAG.getNode(Opc, dl, VT, Op1, Op0, DAG.getConstant(SSECC, MVT::i8));
+    return DAG.getNode(Opc, dl, VT, Op0, Op1, DAG.getConstant(SSECC, MVT::i8));
   }
 
   // Break 256-bit integer vector compare into smaller ones.