When binding an rvalue to a reference, create a temporary object. Use 
CXXObjectRegion to represent it. 

In Environment, lookup a literal expression before make up a value for it.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@93047 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/test/Analysis/reference.cpp b/test/Analysis/reference.cpp
new file mode 100644
index 0000000..941147b
--- /dev/null
+++ b/test/Analysis/reference.cpp
@@ -0,0 +1,6 @@
+// RUN: %clang_cc1 -analyze -analyzer-experimental-internal-checks -checker-cfref -analyzer-store=region -analyzer-constraints=range -verify %s
+
+void f1() {
+  int const &i = 3;
+  int b = i;
+}