MS ABI: Add a test for Unicode literals

This adds coverage for Unicode code points which are encoded with
non-zero values in the upper half of the wchar_t.

No functionality change.

llvm-svn: 205251
diff --git a/clang/test/CodeGenCXX/mangle-ms-string-literals.cpp b/clang/test/CodeGenCXX/mangle-ms-string-literals.cpp
index 6d3e6f6..a77a04f 100644
--- a/clang/test/CodeGenCXX/mangle-ms-string-literals.cpp
+++ b/clang/test/CodeGenCXX/mangle-ms-string-literals.cpp
@@ -717,3 +717,5 @@
 // CHECK: @"\01??_C@_0CF@LABBIIMO@012345678901234567890123456789AB@"
 const wchar_t *LongWideString = L"012345678901234567890123456789ABCDEF";
 // CHECK: @"\01??_C@_1EK@KFPEBLPK@?$AA0?$AA1?$AA2?$AA3?$AA4?$AA5?$AA6?$AA7?$AA8?$AA9?$AA0?$AA1?$AA2?$AA3?$AA4?$AA5?$AA6?$AA7?$AA8?$AA9?$AA0?$AA1?$AA2?$AA3?$AA4?$AA5?$AA6?$AA7?$AA8?$AA9?$AAA?$AAB@"
+const wchar_t *UnicodeLiteral = L"\ud7ff";
+// CHECK: @"\01??_C@_13IIHIAFKH@?W?$PP?$AA?$AA@"