Tidy SDNode::use_iterator, and complete the transition to have it
parallel its analogue, Value::value_use_iterator. The operator* method
now returns the user, rather than the use.

llvm-svn: 54127
diff --git a/llvm/lib/Target/X86/X86ISelLowering.cpp b/llvm/lib/Target/X86/X86ISelLowering.cpp
index 00c8eea..ed0773d 100644
--- a/llvm/lib/Target/X86/X86ISelLowering.cpp
+++ b/llvm/lib/Target/X86/X86ISelLowering.cpp
@@ -4039,7 +4039,7 @@
     // result has a single use which is a store or a bitcast to i32.
     if (!Op.hasOneUse())
       return SDOperand();
-    SDNode *User = Op.Val->use_begin()->getUser();
+    SDNode *User = *Op.Val->use_begin();
     if (User->getOpcode() != ISD::STORE &&
         (User->getOpcode() != ISD::BIT_CONVERT ||
          User->getValueType(0) != MVT::i32))