1 // RUN: %clang_cc1 %s -I%S -triple=x86_64-apple-darwin10 -fstrict-vtable-pointers -disable-llvm-optzns -O2 -emit-llvm -o %t.ll
2 // RUN: FileCheck --check-prefix=CHECK-CTORS %s < %t.ll
3 // RUN: FileCheck --check-prefix=CHECK-NEW %s < %t.ll
4 // RUN: FileCheck --check-prefix=CHECK-DTORS %s < %t.ll
5 // RUN: FileCheck --check-prefix=CHECK-LINK-REQ %s < %t.ll
6
7 typedef __typeof__(sizeof(0)) size_t;
8 void *operator new(size_t, void*) throw();
9
10 struct NotTrivialDtor {
11 ~NotTrivialDtor();
12 };
13
14 struct DynamicBase1 {
15 NotTrivialDtor obj;
16 virtual void foo();
17 };
18
19 struct DynamicDerived : DynamicBase1 {
20 void foo();
21 };
22
23 struct DynamicBase2 {
24 virtual void bar();
~DynamicBase2DynamicBase225 ~DynamicBase2() {
26 bar();
27 }
28 };
29
30 struct DynamicDerivedMultiple : DynamicBase1, DynamicBase2 {
31 virtual void foo();
32 virtual void bar();
33 };
34
35 struct StaticBase {
36 NotTrivialDtor obj;
37 void bar();
38 };
39
40 struct DynamicFromStatic : StaticBase {
41 virtual void bar();
42 };
43
44 struct DynamicFromVirtualStatic1 : virtual StaticBase {
45 };
46
47 struct DynamicFromVirtualStatic2 : virtual StaticBase {
48 };
49
50 struct DynamicFrom2Virtuals :
51 DynamicFromVirtualStatic1,
52 DynamicFromVirtualStatic2 {
53 };
54
55 // CHECK-NEW-LABEL: define void @_Z12LocalObjectsv()
56 // CHECK-NEW-NOT: @llvm.invariant.group.barrier(
57 // CHECK-NEW-LABEL: }
LocalObjects()58 void LocalObjects() {
59 DynamicBase1 DB;
60 DB.foo();
61 DynamicDerived DD;
62 DD.foo();
63
64 DynamicBase2 DB2;
65 DB2.bar();
66
67 StaticBase SB;
68 SB.bar();
69
70 DynamicDerivedMultiple DDM;
71 DDM.foo();
72 DDM.bar();
73
74 DynamicFromStatic DFS;
75 DFS.bar();
76 DynamicFromVirtualStatic1 DFVS1;
77 DFVS1.bar();
78 DynamicFrom2Virtuals DF2V;
79 DF2V.bar();
80 }
81
82 struct DynamicFromVirtualStatic1;
83 // CHECK-CTORS-LABEL: define linkonce_odr void @_ZN25DynamicFromVirtualStatic1C1Ev
84 // CHECK-CTORS-NOT: @llvm.invariant.group.barrier(
85 // CHECK-CTORS-LABEL: }
86
87 struct DynamicFrom2Virtuals;
88 // CHECK-CTORS-LABEL: define linkonce_odr void @_ZN20DynamicFrom2VirtualsC1Ev
89 // CHECK-CTORS: call i8* @llvm.invariant.group.barrier(
90 // CHECK-CTORS-LABEL: }
91
92
93 // CHECK-NEW-LABEL: define void @_Z9Pointers1v()
94 // CHECK-NEW-NOT: @llvm.invariant.group.barrier(
95 // CHECK-NEW-LABEL: call void @_ZN12DynamicBase1C1Ev(
96
97 // CHECK-NEW: %[[THIS3:.*]] = call i8* @llvm.invariant.group.barrier(i8* %[[THIS2:.*]])
98 // CHECK-NEW: %[[THIS4:.*]] = bitcast i8* %[[THIS3]] to %[[DynamicDerived:.*]]*
99 // CHECK-NEW: call void @_ZN14DynamicDerivedC1Ev(%[[DynamicDerived:.*]]* %[[THIS4]])
100 // CHECK-NEW-LABEL: }
Pointers1()101 void Pointers1() {
102 DynamicBase1 *DB = new DynamicBase1;
103 DB->foo();
104
105 DynamicDerived *DD = new (DB) DynamicDerived;
106 DD->foo();
107 DD->~DynamicDerived();
108 }
109
110 // CHECK-NEW-LABEL: define void @_Z14HackingObjectsv()
111 // CHECK-NEW: call void @_ZN12DynamicBase1C1Ev
112 // CHECK-NEW: call i8* @llvm.invariant.group.barrier(
113 // CHECK-NEW: call void @_ZN14DynamicDerivedC1Ev(
114 // CHECK-NEW: call i8* @llvm.invariant.group.barrier(
115 // CHECK-NEW: call void @_ZN12DynamicBase1C1Ev(
116 // CHECK-NEW-LABEL: }
HackingObjects()117 void HackingObjects() {
118 DynamicBase1 DB;
119 DB.foo();
120
121 DynamicDerived *DB2 = new (&DB) DynamicDerived;
122 // Using DB now is prohibited.
123 DB2->foo();
124 DB2->~DynamicDerived();
125
126 // We have to get back to the previous type to avoid calling wrong destructor
127 new (&DB) DynamicBase1;
128 DB.foo();
129 }
130
131 /*** Testing Constructors ***/
132 struct DynamicBase1;
133 // CHECK-CTORS-LABEL: define linkonce_odr void @_ZN12DynamicBase1C2Ev(
134 // CHECK-CTORS-NOT: call i8* @llvm.invariant.group.barrier(
135 // CHECK-CTORS-LABEL: }
136
137
138 struct DynamicDerived;
139
140 // CHECK-CTORS-LABEL: define linkonce_odr void @_ZN14DynamicDerivedC2Ev(
141 // CHECK-CTORS: %[[THIS0:.*]] = load %[[DynamicDerived:.*]]*, %[[DynamicDerived]]** {{.*}}
142 // CHECK-CTORS: %[[THIS1:.*]] = bitcast %[[DynamicDerived:.*]]* %[[THIS0]] to i8*
143 // CHECK-CTORS: %[[THIS2:.*]] = call i8* @llvm.invariant.group.barrier(i8* %[[THIS1:.*]])
144 // CHECK-CTORS: %[[THIS3:.*]] = bitcast i8* %[[THIS2]] to %[[DynamicDerived]]*
145 // CHECK-CTORS: %[[THIS4:.*]] = bitcast %[[DynamicDerived]]* %[[THIS3]] to %[[DynamicBase:.*]]*
146 // CHECK-CTORS: call void @_ZN12DynamicBase1C2Ev(%[[DynamicBase]]* %[[THIS4]])
147
148 // CHECK-CTORS: %[[THIS5:.*]] = bitcast %struct.DynamicDerived* %[[THIS0]] to i32 (...)***
149 // CHECK-CTORS: store {{.*}} %[[THIS5]]
150 // CHECK-CTORS-LABEL: }
151
152 struct DynamicDerivedMultiple;
153 // CHECK-CTORS-LABEL: define linkonce_odr void @_ZN22DynamicDerivedMultipleC2Ev(
154
155 // CHECK-CTORS: %[[THIS0:.*]] = load %[[CLASS:.*]]*, %[[CLASS]]** {{.*}}
156 // CHECK-CTORS: %[[THIS1:.*]] = bitcast %[[CLASS:.*]]* %[[THIS0]] to i8*
157 // CHECK-CTORS: %[[THIS2:.*]] = call i8* @llvm.invariant.group.barrier(i8* %[[THIS1]])
158 // CHECK-CTORS: %[[THIS3:.*]] = bitcast i8* %[[THIS2]] to %[[CLASS]]*
159 // CHECK-CTORS: %[[THIS4:.*]] = bitcast %[[CLASS]]* %[[THIS3]] to %[[BASE_CLASS:.*]]*
160 // CHECK-CTORS: call void @_ZN12DynamicBase1C2Ev(%[[BASE_CLASS]]* %[[THIS4]])
161
162 // CHECK-CTORS: call i8* @llvm.invariant.group.barrier(
163
164 // CHECK-CTORS: call void @_ZN12DynamicBase2C2Ev(
165 // CHECK-CTORS-NOT: @llvm.invariant.group.barrier
166
167
168 // CHECK-CTORS: %[[THIS10:.*]] = bitcast %struct.DynamicDerivedMultiple* %[[THIS0]] to i32 (...)***
169 // CHECK-CTORS: store {{.*}} @_ZTV22DynamicDerivedMultiple, i32 0, i32 2) {{.*}} %[[THIS10]]
170 // CHECK-CTORS: %[[THIS11:.*]] = bitcast %struct.DynamicDerivedMultiple* %[[THIS0]] to i8*
171 // CHECK-CTORS: %[[THIS_ADD:.*]] = getelementptr inbounds i8, i8* %[[THIS11]], i64 16
172 // CHECK-CTORS: %[[THIS12:.*]] = bitcast i8* %[[THIS_ADD]] to i32 (...)***
173
174
175 // CHECK-CTORS: store {{.*}} @_ZTV22DynamicDerivedMultiple, i32 0, i32 6) {{.*}} %[[THIS12]]
176 // CHECK-CTORS-LABEL: }
177
178 struct DynamicFromStatic;
179 // CHECK-CTORS-LABEL: define linkonce_odr void @_ZN17DynamicFromStaticC2Ev(
180 // CHECK-CTORS-NOT: @llvm.invariant.group.barrier(
181 // CHECK-CTORS-LABEL: }
182
183
184 /** DTORS **/
185 // CHECK-DTORS-LABEL: define linkonce_odr void @_ZN10StaticBaseD2Ev(
186 // CHECK-DTORS-NOT: call i8* @llvm.invariant.group.barrier(
187 // CHECK-DTORS-LABEL: }
188
189
190 // CHECK-DTORS-LABEL: define linkonce_odr void @_ZN25DynamicFromVirtualStatic2D2Ev(
191 // CHECK-DTORS-NOT: invariant.barrier
192 // CHECK-DTORS-LABEL: }
193
194 // CHECK-DTORS-LABEL: define linkonce_odr void @_ZN17DynamicFromStaticD2Ev
195 // CHECK-DTORS-NOT: call i8* @llvm.invariant.group.barrier(
196 // CHECK-DTORS-LABEL: }
197
198
199 // CHECK-DTORS-LABEL: define linkonce_odr void @_ZN22DynamicDerivedMultipleD2Ev(
200
201 // CHECK-DTORS-LABEL: define linkonce_odr void @_ZN12DynamicBase2D2Ev(
202 // CHECK-DTORS: call i8* @llvm.invariant.group.barrier(
203 // CHECK-DTORS-LABEL: }
204
205 // CHECK-DTORS-LABEL: define linkonce_odr void @_ZN12DynamicBase1D2Ev
206 // CHECK-DTORS: call i8* @llvm.invariant.group.barrier(
207 // CHECK-DTORS-LABEL: }
208
209 // CHECK-DTORS-LABEL: define linkonce_odr void @_ZN14DynamicDerivedD2Ev
210 // CHECK-DTORS-NOT: call i8* @llvm.invariant.group.barrier(
211 // CHECK-DTORS-LABEL: }
212
213
214 // CHECK-LINK-REQ: !llvm.module.flags = !{![[FIRST:.*]], ![[SEC:.*]]{{.*}}}
215
216 // CHECK-LINK-REQ: ![[FIRST]] = !{i32 1, !"StrictVTablePointers", i32 1}
217 // CHECK-LINK-REQ: ![[SEC]] = !{i32 3, !"StrictVTablePointersRequirement", ![[META:.*]]}
218 // CHECK-LINK-REQ: ![[META]] = !{!"StrictVTablePointers", i32 1}
219
220