Check in LLVM r95781.
diff --git a/test/CodeGenObjC/compatibility-alias.m b/test/CodeGenObjC/compatibility-alias.m
new file mode 100644
index 0000000..fcc53b8
--- /dev/null
+++ b/test/CodeGenObjC/compatibility-alias.m
@@ -0,0 +1,8 @@
+// RUN: %clang_cc1 -emit-llvm -o %t %s
+
+@interface Int1 @end
+
+typedef Int1 Int1Typedef;
+@compatibility_alias Int1Alias Int1Typedef;
+
+@implementation Int1Alias @end