Add support for deprecated Obj-C methods. The semantics mostly match what gcc has.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@64562 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/test/SemaObjC/attr-deprecated.m b/test/SemaObjC/attr-deprecated.m
new file mode 100644
index 0000000..9577e60
--- /dev/null
+++ b/test/SemaObjC/attr-deprecated.m
@@ -0,0 +1,65 @@
+// RUN: clang %s -fsyntax-only -verify
+
+@interface A
++ (void)F __attribute__((deprecated));
+- (void)f __attribute__((deprecated));
+@end
+
+@implementation A
++ (void)F __attribute__((deprecated))
+{
+  [self F]; // expected-warning{{'F' is deprecated}}
+}
+
+- (void)g
+{
+  [self f]; // expected-warning{{'f' is deprecated}}
+}
+
+- (void)f
+{
+  [self f]; // expected-warning{{'f' is deprecated}}
+}
+@end
+
+@interface B: A
+@end
+  
+@implementation B
++ (void)G
+{
+  [super F]; // expected-warning{{'F' is deprecated}}
+}
+
+- (void)g
+{
+  [super f]; // // expected-warning{{'f' is deprecated}}
+}
+@end
+
+@protocol P
+- (void)p __attribute__((deprecated));
+@end
+
+void t1(A *a)
+{
+  [A F]; // expected-warning{{'F' is deprecated}}
+  [a f]; // expected-warning{{'f' is deprecated}}
+}
+
+void t2(id a)
+{
+  [a f];
+}
+
+void t3(A<P>* a)
+{
+  [a f]; // expected-warning{{'f' is deprecated}}
+  [a p]; // expected-warning{{'p' is deprecated}}
+} 
+
+void t4(Class c)
+{
+  [c F];
+}
+