1 // RUN: %clang_cc1 -triple x86_64-apple-darwin10 -emit-llvm -o - %s | FileCheck %s -check-prefix=CHECK -check-prefix=CHECK-MRC
2 // RUN: %clang_cc1 -triple x86_64-apple-darwin10 -emit-llvm -fobjc-arc -o - %s | FileCheck %s -check-prefix=CHECK -check-prefix=CHECK-ARC
4 __attribute__((objc_root_class))
12 @interface Middle : Base
13 + (void) abort __attribute__((noreturn));
14 - (void) fail __attribute__((noreturn));
17 @interface Derived : Middle
20 // An arbitrary instance pointer may be null.
21 void testInstanceMethod(Derived *x) {
24 // CHECK-LABEL: @testInstanceMethod
25 // CHECK: call void @objc_msgSend(ptr {{.*}}, ptr {{.*}}){{$}}
27 // A direct call of a class method will normally never have a null receiver.
28 void testClassMethod(void) {
31 // CHECK-LABEL: @testClassMethod
32 // CHECK: call void @objc_msgSend(ptr {{.*}}, ptr {{.*}}) [[NORETURN:#[0-9]+]]
34 __attribute__((weak_import))
35 @interface WeakMiddle : Base
38 @interface WeakDerived : WeakMiddle
39 + (void) abort __attribute__((noreturn));
42 // The class pointer of a weakly-imported class may be null.
43 void testWeakImport(void) {
46 // CHECK-LABEL: @testWeakImport
47 // CHECK: call void @objc_msgSend(ptr {{.*}}, ptr {{.*}}){{$}}
49 @interface Derived (MyMethods)
52 @implementation Derived (MyMethods)
54 // In general, self can be reassigned, so we can't make stronger assumptions.
55 // But ARC makes self const in an ordinary method.
56 // TODO: do the analysis to take advantage of the dominant case where
57 // self is not reassigned.
58 - (void) testSelfInstanceMethod {
61 // CHECK-LABEL: [Derived(MyMethods) testSelfInstanceMethod]
62 // CHECK-MRC: call void @objc_msgSend(ptr {{.*}}, ptr {{.*}}){{$}}
63 // CHECK-ARC: call void @objc_msgSend(ptr {{.*}}, ptr {{.*}}) [[NORETURN]]
65 // The ARC rule doesn't apply in -init methods.
66 - (id) initWhileTestingSelfInstanceMethod {
71 // CHECK-LABEL: [Derived(MyMethods) initWhileTestingSelfInstanceMethod]
72 // CHECK: call void @objc_msgSend(ptr {{.*}}, ptr {{.*}}){{$}}
74 // Same thing applies to class methods.
75 + (void) testSelfClassMethod {
78 // CHECK-LABEL: [Derived(MyMethods) testSelfClassMethod]
79 // CHECK-MRC: call void @objc_msgSend(ptr {{.*}}, ptr {{.*}}){{$}}
80 // CHECK-ARC: call void @objc_msgSend(ptr {{.*}}, ptr {{.*}}) [[NORETURN]]
82 // Super invocations may never be used with a null pointer; this is a
83 // constraint on user code when it isn't enforced by the ARC const-self
85 - (void) testSuperInstanceMethod {
88 // CHECK-LABEL: [Derived(MyMethods) testSuperInstanceMethod]
89 // CHECK: call void @objc_msgSendSuper2(ptr {{.*}}, ptr {{.*}}) [[NORETURN]]
91 + (void) testSuperClassMethod {
94 // CHECK-LABEL: [Derived(MyMethods) testSuperClassMethod]
95 // CHECK: call void @objc_msgSendSuper2(ptr {{.*}}, ptr {{.*}}) [[NORETURN]]
98 // CHECK: attributes [[NORETURN]] = { noreturn }