1 // RUN: %clang_cc1 -triple i386-apple-darwin10 -emit-llvm -fblocks -fobjc-arc -fobjc-exceptions -fobjc-runtime=macosx-fragile-10.10 -o - %s | FileCheck %s
2 // RUN: %clang_cc1 -triple i386-apple-darwin10 -emit-llvm -fblocks -fobjc-arc -fobjc-exceptions -fobjc-runtime=macosx-fragile-10.10 -o - %s | FileCheck %s -check-prefix=GLOBALS
17 // GLOBALS-LABEL @OBJC_METACLASS_A
18 // Strong layout: scan the first word.
19 // GLOBALS: @OBJC_CLASS_NAME_{{.*}} = private unnamed_addr constant [2 x i8] c"\01\00"
20 // Weak layout: skip the first word, scan the second word.
21 // GLOBALS: @OBJC_CLASS_NAME_{{.*}} = private unnamed_addr constant [2 x i8] c"\11\00"
24 // ^ is compiled by ARC (controls interpretation of layouts)
25 // ^ has C++ structors (no distinction for zero-initializable)
26 // ^ factory (always set on non-metaclasses)
27 // GLOBALS: @OBJC_CLASS_A = private global {{.*}} i32 67117057
30 // CHECK-LABEL: define internal void @"\01-[A testStrong]"
31 // CHECK: [[SELFVAR:%.*]] = alloca [[A:%.*]]*, align 4
33 // CHECK: [[X:%.*]] = alloca [[OPAQUE:%.*]]*, align 4
34 // CHECK: [[SELF:%.*]] = load [[A]]*, [[A]]** [[SELFVAR]]
35 // CHECK-NEXT: [[T0:%.*]] = bitcast [[A]]* [[SELF]] to i8*
36 // CHECK-NEXT: [[T1:%.*]] = getelementptr inbounds i8, i8* [[T0]], i32 4
37 // CHECK-NEXT: [[IVAR:%.*]] = bitcast i8* [[T1]] to [[OPAQUE]]**
38 // CHECK-NEXT: [[T0:%.*]] = load [[OPAQUE]]*, [[OPAQUE]]** [[IVAR]]
39 // CHECK-NEXT: [[T1:%.*]] = bitcast [[OPAQUE]]* [[T0]] to i8*
40 // CHECK-NEXT: [[T2:%.*]] = call i8* @objc_retain(i8* [[T1]])
41 // CHECK-NEXT: [[T3:%.*]] = bitcast i8* [[T2]] to [[OPAQUE]]*
42 // CHECK-NEXT: store [[OPAQUE]]* [[T3]], [[OPAQUE]]** [[X]]
44 // CHECK-NEXT: [[VALUE:%.*]] = load [[OPAQUE]]*, [[OPAQUE]]** [[X]]
45 // CHECK-NEXT: [[SELF:%.*]] = load [[A]]*, [[A]]** [[SELFVAR]]
46 // CHECK-NEXT: [[T0:%.*]] = bitcast [[A]]* [[SELF]] to i8*
47 // CHECK-NEXT: [[T1:%.*]] = getelementptr inbounds i8, i8* [[T0]], i32 4
48 // CHECK-NEXT: [[IVAR:%.*]] = bitcast i8* [[T1]] to [[OPAQUE]]**
49 // CHECK-NEXT: [[T0:%.*]] = bitcast [[OPAQUE]]** [[IVAR]] to i8**
50 // CHECK-NEXT: [[T1:%.*]] = bitcast [[OPAQUE]]* [[VALUE]] to i8*
51 // CHECK-NEXT: call void @objc_storeStrong(i8** [[T0]], i8* [[T1]])
53 // CHECK-NEXT: [[T0:%.*]] = bitcast [[OPAQUE]]** [[X]] to i8**
54 // CHECK-NEXT: call void @objc_storeStrong(i8** [[T0]], i8* null)
55 // CHECK-NEXT: ret void
58 // CHECK-LABEL: define internal void @"\01-[A testWeak]"
59 // CHECK: [[SELFVAR:%.*]] = alloca [[A]]*, align 4
61 // CHECK: [[X:%.*]] = alloca [[OPAQUE]]*, align 4
62 // CHECK: [[SELF:%.*]] = load [[A]]*, [[A]]** [[SELFVAR]]
63 // CHECK-NEXT: [[T0:%.*]] = bitcast [[A]]* [[SELF]] to i8*
64 // CHECK-NEXT: [[T1:%.*]] = getelementptr inbounds i8, i8* [[T0]], i32 8
65 // CHECK-NEXT: [[IVAR:%.*]] = bitcast i8* [[T1]] to [[OPAQUE]]**
66 // CHECK-NEXT: [[T0:%.*]] = bitcast [[OPAQUE]]** [[IVAR]] to i8**
67 // CHECK-NEXT: [[T1:%.*]] = call i8* @objc_loadWeakRetained(i8** [[T0]])
68 // CHECK-NEXT: [[T2:%.*]] = bitcast i8* [[T1]] to [[OPAQUE]]*
69 // CHECK-NEXT: store [[OPAQUE]]* [[T2]], [[OPAQUE]]** [[X]]
71 // CHECK-NEXT: [[VALUE:%.*]] = load [[OPAQUE]]*, [[OPAQUE]]** [[X]]
72 // CHECK-NEXT: [[SELF:%.*]] = load [[A]]*, [[A]]** [[SELFVAR]]
73 // CHECK-NEXT: [[T0:%.*]] = bitcast [[A]]* [[SELF]] to i8*
74 // CHECK-NEXT: [[T1:%.*]] = getelementptr inbounds i8, i8* [[T0]], i32 8
75 // CHECK-NEXT: [[IVAR:%.*]] = bitcast i8* [[T1]] to [[OPAQUE]]**
76 // CHECK-NEXT: [[T0:%.*]] = bitcast [[OPAQUE]]** [[IVAR]] to i8**
77 // CHECK-NEXT: [[T1:%.*]] = bitcast [[OPAQUE]]* [[VALUE]] to i8*
78 // CHECK-NEXT: call i8* @objc_storeWeak(i8** [[T0]], i8* [[T1]])
80 // CHECK-NEXT: [[T0:%.*]] = bitcast [[OPAQUE]]** [[X]] to i8**
81 // CHECK-NEXT: call void @objc_storeStrong(i8** [[T0]], i8* null)
82 // CHECK-NEXT: ret void
85 // CHECK-LABEL: define internal void @"\01-[A .cxx_destruct]"
86 // CHECK: [[SELFVAR:%.*]] = alloca [[A]]*, align 4
87 // CHECK: [[SELF:%.*]] = load [[A]]*, [[A]]** [[SELFVAR]]
88 // CHECK-NEXT: [[T0:%.*]] = bitcast [[A]]* [[SELF]] to i8*
89 // CHECK-NEXT: [[T1:%.*]] = getelementptr inbounds i8, i8* [[T0]], i32 8
90 // CHECK-NEXT: [[IVAR:%.*]] = bitcast i8* [[T1]] to [[OPAQUE]]**
91 // CHECK-NEXT: [[T0:%.*]] = bitcast [[OPAQUE]]** [[IVAR]] to i8**
92 // CHECK-NEXT: call void @objc_destroyWeak(i8** [[T0]])
93 // CHECK-NEXT: [[T0:%.*]] = bitcast [[A]]* [[SELF]] to i8*
94 // CHECK-NEXT: [[T1:%.*]] = getelementptr inbounds i8, i8* [[T0]], i32 4
95 // CHECK-NEXT: [[IVAR:%.*]] = bitcast i8* [[T1]] to [[OPAQUE]]**
96 // CHECK-NEXT: [[T0:%.*]] = bitcast [[OPAQUE]]** [[IVAR]] to i8**
97 // CHECK-NEXT: call void @objc_storeStrong(i8** [[T0]], i8* null)
98 // CHECK-NEXT: ret void
101 // Test case for corner case of ivar layout.
109 __unsafe_unretained id c_unsafe[5];
115 @implementation C @end
117 // Note that these layouts implicitly start at the end of the previous
118 // class rounded up to pointer alignment.
119 // GLOBALS-LABEL: @OBJC_METACLASS_C
120 // Strong layout: skip five, scan four, skip three, scan seven
121 // 'T' == 0x54, '7' == 0x37
122 // GLOBALS: @OBJC_CLASS_NAME_{{.*}} = private unnamed_addr constant [3 x i8] c"T7\00"
123 // Weak layout: skip nine, scan three
124 // GLOBALS: @OBJC_CLASS_NAME_{{.*}} = private unnamed_addr constant [2 x i8] c"\93\00"
126 extern void useBlock(void (^block)(void));
128 // 256 == 0x100 == starts with 1 strong
129 // GLOBALS: @__block_descriptor_tmp{{.*}} = internal constant {{.*}}, i32 256 }
130 void testBlockLayoutStrong(id x) {
131 useBlock(^{ (void) x; });
134 // 1 == 0x001 == starts with 1 weak
135 // GLOBALS: @__block_descriptor_tmp{{.*}} = internal constant {{.*}}, i32 1 }
136 void testBlockLayoutWeak(__weak id x) {
137 useBlock(^{ (void) x; });
140 // CHECK-LABEL: define void @testCatch()
141 // CHECK: [[X:%.*]] = alloca [[A:%.*]]*, align 4
142 // CHECK: [[Y:%.*]] = alloca i8*, align 4
143 // CHECK: call void @objc_exception_try_enter
145 // CHECK: call void @checkpoint(i32 0)
146 // CHECK: call void @objc_exception_try_exit
148 // CHECK: call void @checkpoint(i32 3)
149 // CHECK: [[EXN:%.*]] = call i8* @objc_exception_extract
150 // CHECK: call i32 @objc_exception_match(
152 // CHECK: [[T0:%.*]] = bitcast i8* [[EXN]] to [[A]]*
153 // CHECK: [[T1:%.*]] = bitcast [[A]]* [[T0]] to i8*
154 // CHECK: [[T2:%.*]] = call i8* @objc_retain(i8* [[T1]])
155 // CHECK: [[T3:%.*]] = bitcast i8* [[T2]] to [[A]]*
156 // CHECK: store [[A]]* [[T3]], [[A]]** [[X]]
157 // CHECK: call void @checkpoint(i32 1)
158 // CHECK: [[T0:%.*]] = bitcast [[A]]** [[X]] to i8**
159 // CHECK: call void @objc_storeStrong(i8** [[T0]], i8* null)
161 // CHECK: [[T0:%.*]] = call i8* @objc_retain(i8* [[EXN]])
162 // CHECK: store i8* [[T0]], i8** [[Y]]
163 // CHECK: call void @checkpoint(i32 2)
164 // CHECK: call void @objc_storeStrong(i8** [[Y]], i8* null)
165 extern void checkpoint(int n);