diff --git a/lib/CodeGen/IntrinsicLowering.cpp b/lib/CodeGen/IntrinsicLowering.cpp
index 960d660cb94..0ef9706668b 100644
--- a/lib/CodeGen/IntrinsicLowering.cpp
+++ b/lib/CodeGen/IntrinsicLowering.cpp
@@ -533,7 +533,8 @@ static Instruction *LowerPartSet(CallInst *CI) {
       Lo = new ZExtInst(Lo_pn, ValTy, "", entry);
     } else if (ValBits < 32) {
       Lo = new TruncInst(Lo_pn, ValTy, "", entry);
-    }
+    } else
+      Lo = Lo_pn;
     // Determine if the replacement bits are larger than the number of bits we
     // are replacing and deal with it.
     ICmpInst* is_large =