Backing out 48222 temporarily.

llvm-svn: 49124
diff --git a/llvm/lib/Target/X86/X86ISelLowering.cpp b/llvm/lib/Target/X86/X86ISelLowering.cpp
index 162979b..8d4b464 100644
--- a/llvm/lib/Target/X86/X86ISelLowering.cpp
+++ b/llvm/lib/Target/X86/X86ISelLowering.cpp
@@ -3724,7 +3724,7 @@
     // result has a single use which is a store.
     if (!Op.hasOneUse())
       return SDOperand();
-    SDNode *User = Op.Val->use_begin()->getUser();
+    SDNode *User = *Op.Val->use_begin();
     if (User->getOpcode() != ISD::STORE)
       return SDOperand();
     SDOperand Extract = DAG.getNode(ISD::EXTRACT_VECTOR_ELT, MVT::i32,