1 files changed, 183 insertions, 0 deletions
diff --git a/test/CodeGenObjCXX/mrc-weak.mm b/test/CodeGenObjCXX/mrc-weak.mm
new file mode 100644
index 0000000..17ceb31
--- /dev/null
+++ b/test/CodeGenObjCXX/mrc-weak.mm
@@ -0,0 +1,183 @@
+// RUN: %clang_cc1 -triple x86_64-apple-darwin10 -fobjc-runtime=macosx-10.10 -emit-llvm -fblocks -fobjc-weak -o - %s | FileCheck %s -check-prefix=CHECK -check-prefix=CHECK-MODERN
+// RUN: %clang_cc1 -triple i386-apple-darwin10 -fobjc-runtime=macosx-fragile-10.10 -emit-llvm -fblocks -fobjc-weak -o - %s | FileCheck %s -check-prefix=CHECK -check-prefix=CHECK-FRAGILE
+
+@interface Object
+- (instancetype) retain;
+- (void) run;
+@end
+
+// CHECK-MODERN: @OBJC_CLASS_NAME_{{.*}} = {{.*}} c"\01\00"
+// CHECK-MODERN: @"\01l_OBJC_CLASS_RO_$_Foo" = {{.*}} { i32 772
+//   772 == 0x304
+//            ^ HasMRCWeakIvars
+//            ^ HasCXXDestructorOnly
+//              ^ HasCXXStructors
+
+// CHECK-FRAGILE: @OBJC_CLASS_NAME_{{.*}} = {{.*}} c"\01\00"
+// CHECK-FRAGILE: @OBJC_CLASS_Foo = {{.*}} i32 134225921,
+//   134225921 == 0x08002001
+//                   ^ HasMRCWeakIvars
+//                      ^ HasCXXStructors
+//                         ^ Factory
+@interface Foo : Object {
+  __weak id ivar;
+}
+@end
+
+@implementation Foo
+// CHECK-LABEL: define internal void @"\01-[Foo .cxx_destruct]"
+// CHECK: call void @objc_destroyWeak
+@end
+
+
+void test1(__weak id x) {}
+// CHECK-LABEL: define void @_Z5test1P11objc_object(
+// CHECK:      [[X:%.*]] = alloca i8*,
+// CHECK-NEXT: objc_initWeak
+// CHECK-NEXT: objc_destroyWeak
+// CHECK-NEXT: ret void
+
+void test2(id y) {
+  __weak id z = y;
+}
+// CHECK-LABEL: define void @_Z5test2P11objc_object(
+// CHECK:      [[Y:%.*]] = alloca i8*,
+// CHECK-NEXT: [[Z:%.*]] = alloca i8*,
+// CHECK-NEXT: store
+// CHECK-NEXT: [[T0:%.*]] = load i8*, i8** [[Y]]
+// CHECK-NEXT: call i8* @objc_initWeak(i8** [[Z]], i8* [[T0]])
+// CHECK-NEXT: call void @objc_destroyWeak(i8** [[Z]])
+// CHECK-NEXT: ret void
+
+void test3(id y) {
+  __weak id z;
+  z = y;
+}
+// CHECK-LABEL: define void @_Z5test3P11objc_object(
+// CHECK:      [[Y:%.*]] = alloca i8*,
+// CHECK-NEXT: [[Z:%.*]] = alloca i8*,
+// CHECK-NEXT: store
+// CHECK-NEXT: store i8* null, i8** [[Z]]
+// CHECK-NEXT: [[T0:%.*]] = load i8*, i8** [[Y]]
+// CHECK-NEXT: call i8* @objc_storeWeak(i8** [[Z]], i8* [[T0]])
+// CHECK-NEXT: call void @objc_destroyWeak(i8** [[Z]])
+// CHECK-NEXT: ret void
+
+void test4(__weak id *p) {
+  id y = *p;
+}
+// CHECK-LABEL: define void @_Z5test4PU6__weakP11objc_object(
+// CHECK:      [[P:%.*]] = alloca i8**,
+// CHECK-NEXT: [[Y:%.*]] = alloca i8*,
+// CHECK-NEXT: store
+// CHECK-NEXT: [[T0:%.*]] = load i8**, i8*** [[P]]
+// CHECK-NEXT: [[T1:%.*]] = call i8* @objc_loadWeak(i8** [[T0]])
+// CHECK-NEXT: store i8* [[T1]], i8** [[Y]]
+// CHECK-NEXT: ret void
+
+void test5(__weak id *p) {
+  id y = [*p retain];
+}
+// CHECK-LABEL: define void @_Z5test5PU6__weakP11objc_object
+// CHECK:      [[P:%.*]] = alloca i8**,
+// CHECK-NEXT: [[Y:%.*]] = alloca i8*,
+// CHECK-NEXT: store
+// CHECK-NEXT: [[T0:%.*]] = load i8**, i8*** [[P]]
+// CHECK-NEXT: [[T1:%.*]] = call i8* @objc_loadWeakRetained(i8** [[T0]])
+// CHECK-NEXT: store i8* [[T1]], i8** [[Y]]
+// CHECK-NEXT: ret void
+
+void test6(__weak Foo **p) {
+  Foo *y = [*p retain];
+}
+// CHECK-LABEL: define void @_Z5test6PU6__weakP3Foo
+// CHECK:      [[P:%.*]] = alloca [[FOO:%.*]]**,
+// CHECK-NEXT: [[Y:%.*]] = alloca [[FOO]]*,
+// CHECK-NEXT: store
+// CHECK-NEXT: [[T0:%.*]] = load [[FOO]]**, [[FOO]]*** [[P]]
+// CHECK-NEXT: [[T1:%.*]] = bitcast [[FOO]]** [[T0]] to i8**
+// CHECK-NEXT: [[T2:%.*]] = call i8* @objc_loadWeakRetained(i8** [[T1]])
+// CHECK-NEXT: [[T3:%.*]] = bitcast i8* [[T2]] to [[FOO]]*
+// CHECK-NEXT: store [[FOO]]* [[T3]], [[FOO]]** [[Y]]
+// CHECK-NEXT: ret void
+
+extern "C" id get_object(void);
+extern "C" void use_block(void (^)(void));
+
+void test7(void) {
+  __weak Foo *p = get_object();
+  use_block(^{ [p run ]; });
+}
+// CHECK-LABEL: define void @_Z5test7v
+// CHECK:       [[P:%.*]] = alloca [[FOO]]*,
+// CHECK:       [[T0:%.*]] = call i8* @get_object()
+// CHECK-NEXT:  [[T1:%.*]] = bitcast i8* [[T0]] to [[FOO]]*
+// CHECK-NEXT:  [[T2:%.*]] = bitcast [[FOO]]** [[P]] to i8**
+// CHECK-NEXT:  [[T3:%.*]] = bitcast [[FOO]]* [[T1]] to i8*
+// CHECK-NEXT:  call i8* @objc_initWeak(i8** [[T2]], i8* [[T3]])
+// CHECK:       call void @objc_copyWeak
+// CHECK:       call void @use_block
+// CHECK:       call void @objc_destroyWeak
+
+// CHECK-LABEL: define internal void @__copy_helper_block
+// CHECK:       @objc_copyWeak
+
+// CHECK-LABEL: define internal void @__destroy_helper_block
+// CHECK:       @objc_destroyWeak
+
+void test8(void) {
+  __block __weak Foo *p = get_object();
+  use_block(^{ [p run ]; });
+}
+// CHECK-LABEL: define void @_Z5test8v
+// CHECK:       call i8* @objc_initWeak
+// CHECK-NOT:   call void @objc_copyWeak
+// CHECK:       call void @use_block
+// CHECK:       call void @objc_destroyWeak
+
+// CHECK-LABEL: define internal void @__Block_byref_object_copy
+// CHECK:       call void @objc_moveWeak
+
+// CHECK-LABEL: define internal void @__Block_byref_object_dispose
+// CHECK:       call void @objc_destroyWeak
+
+// CHECK-LABEL: define void @_Z14test9_baselinev()
+// CHECK:       define internal void @__copy_helper
+// CHECK:       define internal void @__destroy_helper
+void test9_baseline(void) {
+  Foo *p = get_object();
+  use_block(^{ [p run]; });
+}
+
+// CHECK-LABEL: define void @_Z5test9v()
+// CHECK-NOT:   define internal void @__copy_helper
+// CHECK-NOT:   define internal void @__destroy_helper
+// CHECK:       define void @_Z9test9_finv()
+void test9(void) {
+  __unsafe_unretained Foo *p = get_object();
+  use_block(^{ [p run]; });
+}
+void test9_fin() {}
+
+// CHECK-LABEL: define void @_Z6test10v()
+// CHECK-NOT:   define internal void @__copy_helper
+// CHECK-NOT:   define internal void @__destroy_helper
+// CHECK:       define void @_Z10test10_finv()
+void test10(void) {
+  typedef __unsafe_unretained Foo *UnsafeFooPtr;
+  UnsafeFooPtr p = get_object();
+  use_block(^{ [p run]; });
+}
+void test10_fin() {}
+
+// CHECK-LABEL: define weak_odr void @_Z6test11ILj0EEvv()
+// CHECK-NOT:   define internal void @__copy_helper
+// CHECK-NOT:   define internal void @__destroy_helper
+// CHECK:       define void @_Z10test11_finv()
+template <unsigned i> void test11(void) {
+  typedef __unsafe_unretained Foo *UnsafeFooPtr;
+  UnsafeFooPtr p = get_object();
+  use_block(^{ [p run]; });
+}
+template void test11<0>();
+void test11_fin() {}