Check in LLVM r95781.
diff --git a/test/CodeGenObjC/implicit-objc_msgSend.m b/test/CodeGenObjC/implicit-objc_msgSend.m
new file mode 100644
index 0000000..a21e869
--- /dev/null
+++ b/test/CodeGenObjC/implicit-objc_msgSend.m
@@ -0,0 +1,7 @@
+// RUN: %clang_cc1 -triple x86_64-apple-darwin9 -emit-llvm -o %t %s
+// RUN: grep -F 'declare i8* @objc_msgSend(...)' %t
+
+typedef struct objc_selector *SEL;
+id f0(id x, SEL s) {
+  return objc_msgSend(x, s);
+}