diff --git a/llvm/lib/CodeGen/SelectionDAG/SelectionDAG.cpp b/llvm/lib/CodeGen/SelectionDAG/SelectionDAG.cpp
index 3e798bc..eb6e603 100644
--- a/llvm/lib/CodeGen/SelectionDAG/SelectionDAG.cpp
+++ b/llvm/lib/CodeGen/SelectionDAG/SelectionDAG.cpp
@@ -965,6 +965,9 @@
   }
   if (ConstantFPSDNode *N1C = dyn_cast<ConstantFPSDNode>(N1.Val))
     if (ConstantFPSDNode *N2C = dyn_cast<ConstantFPSDNode>(N2.Val)) {
+      // No compile time operations on this type yet.
+      if (N1C->getValueType(0) == MVT::ppcf128)
+        return SDOperand();
 
       APFloat::cmpResult R = N1C->getValueAPF().compare(N2C->getValueAPF());
       switch (Cond) {