Back out r72431, it is causing a number of compilation crashes with clang.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@72436 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/CellSPU/SPUISelLowering.cpp b/lib/Target/CellSPU/SPUISelLowering.cpp
index 864a914..cef87e9 100644
--- a/lib/Target/CellSPU/SPUISelLowering.cpp
+++ b/lib/Target/CellSPU/SPUISelLowering.cpp
@@ -2304,7 +2304,7 @@
     return ExpandLibCall(LC, Op, DAG, false, Dummy, TLI);
   }
 
-  return Op;
+  return SDValue();
 }
 
 //! Lower ISD::SINT_TO_FP, ISD::UINT_TO_FP for i32
@@ -2330,7 +2330,7 @@
     return ExpandLibCall(LC, Op, DAG, false, Dummy, TLI);
   }
 
-  return Op;
+  return SDValue();
 }
 
 //! Lower ISD::SETCC