Fix broken CellSPU lowering, re-instate braces in Legalize

llvm-svn: 54168
diff --git a/llvm/lib/Target/CellSPU/SPUISelLowering.cpp b/llvm/lib/Target/CellSPU/SPUISelLowering.cpp
index 2fd7251..5f621ed 100644
--- a/llvm/lib/Target/CellSPU/SPUISelLowering.cpp
+++ b/llvm/lib/Target/CellSPU/SPUISelLowering.cpp
@@ -2481,8 +2481,9 @@
                          DAG.getNode(ISD::BUILD_VECTOR, VT, tcVec, tcVecSize));
     }
   }
-
-  return SDValue();
+  // These operations (AND, OR, XOR) are legal, they just couldn't be custom
+  // lowered.  Return the operation, rather than a null SDValue.
+  return Op;
 }
 
 //! Lower i32 multiplication