1 files changed, 31 insertions, 0 deletions
diff --git a/test/CodeGenObjC/availability-check.m b/test/CodeGenObjC/availability-check.m
new file mode 100644
index 000000000000..71c5ff77c96a
--- /dev/null
+++ b/test/CodeGenObjC/availability-check.m
@@ -0,0 +1,31 @@
+// RUN: %clang_cc1 -triple x86_64-apple-macosx10.11 -emit-llvm -o - %s | FileCheck %s
+
+void use_at_available() {
+  // CHECK: call i32 @__isOSVersionAtLeast(i32 10, i32 12, i32 0)
+  // CHECK-NEXT: icmp ne
+  if (__builtin_available(macos 10.12, *))
+    ;
+
+  // CHECK: call i32 @__isOSVersionAtLeast(i32 10, i32 12, i32 0)
+  // CHECK-NEXT: icmp ne
+  if (@available(macos 10.12, *))
+    ;
+
+  // CHECK: call i32 @__isOSVersionAtLeast(i32 10, i32 12, i32 42)
+  // CHECK-NEXT: icmp ne
+  if (__builtin_available(ios 10, macos 10.12.42, *))
+    ;
+
+  // CHECK-NOT: call i32 @__isOSVersionAtLeast
+  // CHECK: br i1 true
+  if (__builtin_available(ios 10, *))
+    ;
+
+  // This check should be folded: our deployment target is 10.11.
+  // CHECK-NOT: call i32 @__isOSVersionAtLeast
+  // CHECK: br i1 true
+  if (__builtin_available(macos 10.11, *))
+    ;
+}
+
+// CHECK: declare i32 @__isOSVersionAtLeast(i32, i32, i32)