1 // RUN: %clang_cc1 -triple x86_64-apple-darwin10 -emit-llvm -fobjc-arc -fobjc-runtime-has-weak -o - -std=c++11 %s | FileCheck %s
3 // CHECK: %[[TYPE:[a-z0-9]+]] = type opaque
4 // CHECK: @[[CFSTRING:[a-z0-9_]+]] = private global %struct.__NSConstantString_tag
7 // CHECK-LABEL: define void @_Z5test1v
8 // CHECK: %[[ALLOCA:[A-Z]+]] = alloca %[[TYPE]]*
9 // CHECK: %[[V0:[0-9]+]] = call i8* @llvm.objc.retain(i8* bitcast (%struct.__NSConstantString_tag* @[[CFSTRING]]
10 // CHECK: %[[V1:[0-9]+]] = bitcast i8* %[[V0]] to %[[TYPE]]*
11 // CHECK: store %[[TYPE]]* %[[V1]], %[[TYPE]]** %[[ALLOCA]]
12 // CHECK: %[[V2:[0-9]+]] = bitcast %[[TYPE]]** %[[ALLOCA]]
13 // CHECK: call void @llvm.objc.storeStrong(i8** %[[V2]], i8* null)
15 constexpr NSString *S = @"abc";
18 // CHECK-LABEL: define void @_Z5test2v
19 // CHECK: %[[CONST:[a-zA-Z]+]] = alloca %[[TYPE]]*
20 // CHECK: %[[REF_CONST:[a-zA-Z]+]] = alloca %[[TYPE]]*
21 // CHECK: %[[V0:[0-9]+]] = call i8* @llvm.objc.retain(i8* bitcast (%struct.__NSConstantString_tag* @[[CFSTRING]]
22 // CHECK-NEXT: %[[V1:[0-9]+]] = bitcast i8* %[[V0]] to %[[TYPE]]*
23 // CHECK-NEXT: store %[[TYPE]]* %[[V1]], %[[TYPE]]** %[[CONST]]
24 // CHECK: %[[V2:[0-9]+]] = call i8* @llvm.objc.retain(i8* bitcast (%struct.__NSConstantString_tag* @[[CFSTRING]]
25 // CHECK-NEXT: %[[V3:[0-9]+]] = bitcast i8* %[[V2]] to %[[TYPE]]*
26 // CHECK-NEXT: store %[[TYPE]]* %[[V3]], %[[TYPE]]** %[[REF_CONST]]
27 // CHECK: %[[V4:[0-9]+]] = bitcast %[[TYPE]]** %[[REF_CONST]]
28 // CHECK-NEXT: call void @llvm.objc.storeStrong(i8** %[[V4]], i8* null)
29 // CHECK: %[[V5:[0-9]+]] = bitcast %[[TYPE]]** %[[CONST]]
30 // CHECK-NEXT: call void @llvm.objc.storeStrong(i8** %[[V5]], i8* null)
32 constexpr NSString *Const = @"abc";
33 // In IR RefConst should be initialized with Const initializer instead of
34 // reading from variable.
35 NSString* RefConst = Const;
38 // CHECK-LABEL: define void @_Z5test3v
39 // CHECK: %[[WEAK_CONST:[a-zA-Z]+]] = alloca %[[TYPE]]*
40 // CHECK: %[[REF_WEAK_CONST:[a-zA-Z]+]] = alloca %[[TYPE]]*
41 // CHECK: %[[V0:[0-9]+]] = bitcast %[[TYPE]]** %[[WEAK_CONST]]
42 // CHECK-NEXT: %[[V1:[0-9]+]] = call i8* @llvm.objc.initWeak(i8** %[[V0]], i8* bitcast (%struct.__NSConstantString_tag* @[[CFSTRING]]
43 // CHECK: store %[[TYPE]]* bitcast (%struct.__NSConstantString_tag* @[[CFSTRING]] to %[[TYPE]]*), %[[TYPE]]** %[[REF_WEAK_CONST]]
44 // CHECK: %[[V2:[0-9]+]] = bitcast %[[TYPE]]** %[[REF_WEAK_CONST]]
45 // CHECK-NEXT: call void @llvm.objc.storeStrong(i8** %[[V2]], i8* null)
46 // CHECK: %[[V3:[0-9]+]] = bitcast %[[TYPE]]** %[[WEAK_CONST]]
47 // CHECK-NEXT: call void @llvm.objc.destroyWeak(i8** %[[V3]])
49 __weak constexpr NSString *WeakConst = @"abc";
50 NSString* RefWeakConst = WeakConst;