Create a temporary if the lvalue is a bitfield. Reported by Eli.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@72155 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/CGExpr.cpp b/lib/CodeGen/CGExpr.cpp
index 299bb6b..eaf0873 100644
--- a/lib/CodeGen/CGExpr.cpp
+++ b/lib/CodeGen/CGExpr.cpp
@@ -72,7 +72,7 @@
 
 RValue CodeGenFunction::EmitReferenceBindingToExpr(const Expr* E,
                                                    QualType DestType) {
-  if (E->isLvalue(getContext()) == Expr::LV_Valid) {
+  if (E->isLvalue(getContext()) == Expr::LV_Valid && !E->getBitField()) {
     // Emit the expr as an lvalue.
     LValue LV = EmitLValue(E);
     return RValue::get(LV.getAddress());