1 // RUN: %clang_cc1 %s -I%S -triple=x86_64-apple-darwin10 -fstrict-vtable-pointers -std=c++11 -disable-llvm-passes -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
7 typedef __typeof__(sizeof(0)) size_t;
8 void *operator new(size_t, void*) throw();
10 struct NotTrivialDtor {
19 struct DynamicDerived : DynamicBase1 {
30 struct DynamicDerivedMultiple : DynamicBase1, DynamicBase2 {
40 struct DynamicFromStatic : StaticBase {
44 struct DynamicFromVirtualStatic1 : virtual StaticBase {
47 struct DynamicFromVirtualStatic2 : virtual StaticBase {
50 struct DynamicFrom2Virtuals :
51 DynamicFromVirtualStatic1,
52 DynamicFromVirtualStatic2 {
55 // CHECK-NEW-LABEL: define void @_Z12LocalObjectsv()
56 // CHECK-NEW-NOT: @llvm.invariant.group.barrier(
57 // CHECK-NEW-LABEL: {{^}}}
70 DynamicDerivedMultiple DDM;
74 DynamicFromStatic DFS;
76 DynamicFromVirtualStatic1 DFVS1;
78 DynamicFrom2Virtuals DF2V;
82 struct DynamicFromVirtualStatic1;
83 // CHECK-CTORS-LABEL: define linkonce_odr void @_ZN25DynamicFromVirtualStatic1C1Ev
84 // CHECK-CTORS-NOT: @llvm.invariant.group.barrier(
85 // CHECK-CTORS-LABEL: {{^}}}
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: {{^}}}
93 // CHECK-NEW-LABEL: define void @_Z9Pointers1v()
94 // CHECK-NEW-NOT: @llvm.invariant.group.barrier(
95 // CHECK-NEW-LABEL: call void @_ZN12DynamicBase1C1Ev(
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: {{^}}}
102 DynamicBase1 *DB = new DynamicBase1;
105 DynamicDerived *DD = new (DB) DynamicDerived;
107 DD->~DynamicDerived();
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: {{^}}}
117 void HackingObjects() {
121 DynamicDerived *DB2 = new (&DB) DynamicDerived;
122 // Using DB now is prohibited.
124 DB2->~DynamicDerived();
126 // We have to get back to the previous type to avoid calling wrong destructor
127 new (&DB) DynamicBase1;
131 /*** Testing Constructors ***/
133 // CHECK-CTORS-LABEL: define linkonce_odr void @_ZN12DynamicBase1C2Ev(
134 // CHECK-CTORS-NOT: call i8* @llvm.invariant.group.barrier(
135 // CHECK-CTORS-LABEL: {{^}}}
138 struct DynamicDerived;
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]])
148 // CHECK-CTORS: %[[THIS5:.*]] = bitcast %struct.DynamicDerived* %[[THIS0]] to i32 (...)***
149 // CHECK-CTORS: store {{.*}} %[[THIS5]]
150 // CHECK-CTORS-LABEL: {{^}}}
152 struct DynamicDerivedMultiple;
153 // CHECK-CTORS-LABEL: define linkonce_odr void @_ZN22DynamicDerivedMultipleC2Ev(
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]])
162 // CHECK-CTORS: call i8* @llvm.invariant.group.barrier(
164 // CHECK-CTORS: call void @_ZN12DynamicBase2C2Ev(
165 // CHECK-CTORS-NOT: @llvm.invariant.group.barrier
168 // CHECK-CTORS: %[[THIS10:.*]] = bitcast %struct.DynamicDerivedMultiple* %[[THIS0]] to i32 (...)***
169 // CHECK-CTORS: store {{.*}} @_ZTV22DynamicDerivedMultiple, i32 0, inrange 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 (...)***
175 // CHECK-CTORS: store {{.*}} @_ZTV22DynamicDerivedMultiple, i32 0, inrange i32 1, i32 2) {{.*}} %[[THIS12]]
176 // CHECK-CTORS-LABEL: {{^}}}
178 struct DynamicFromStatic;
179 // CHECK-CTORS-LABEL: define linkonce_odr void @_ZN17DynamicFromStaticC2Ev(
180 // CHECK-CTORS-NOT: @llvm.invariant.group.barrier(
181 // CHECK-CTORS-LABEL: {{^}}}
195 void changeToB(U *u);
196 void changeToA(U *u);
201 // We have to guard access to union fields with invariant.group, because
202 // it is very easy to skip the barrier with unions. In this example the inlined
203 // g2 will produce loads with the same !invariant.group metadata, and
204 // u->a and u->b would use the same pointer.
205 // CHECK-NEW-LABEL: define void @_Z14UnionsBarriersP1U
206 void UnionsBarriers(U *u) {
207 // CHECK-NEW: call void @_Z9changeToBP1U(
209 // CHECK-NEW: call i8* @llvm.invariant.group.barrier(i8*
210 // CHECK-NEW: call void @_Z2g2P1A(%struct.A*
212 // CHECK-NEW: call void @_Z9changeToAP1U(%union.U*
214 // CHECK-NEW: call i8* @llvm.invariant.group.barrier(i8*
215 // call void @_Z2g2P1A(%struct.A* %a)
217 // CHECK-NEW-NOT: call i8* @llvm.invariant.group.barrier(i8*
220 struct HoldingVirtuals {
225 struct AnotherEmpty {
232 void take(AnotherEmpty &);
234 // CHECK-NEW-LABEL: noBarriers
235 void noBarriers(NoVptrs &noVptrs) {
236 // CHECK-NEW-NOT: call i8* @llvm.invariant.group.barrier(i8*
239 // CHECK-NEW-NOT: call i8* @llvm.invariant.group.barrier(i8*
240 // CHECK-NEW: call void @_Z4takeR12AnotherEmpty(
248 void take(HoldingVirtuals &);
250 // CHECK-NEW-LABEL: define void @_Z15UnionsBarriers2R2U2
251 void UnionsBarriers2(U2 &u) {
252 // CHECK-NEW-NOT: call i8* @llvm.invariant.group.barrier(i8*
255 // CHECK-NEW: call i8* @llvm.invariant.group.barrier(i8*
256 // CHECK-NEW: call void @_Z4takeR15HoldingVirtuals(
260 struct VirtualInBase : HoldingVirtuals, Empty {
263 struct VirtualInVBase : virtual Empty, virtual HoldingVirtuals {
266 // It has vtable by virtual inheritance.
267 struct VirtualInheritance : virtual Empty {
273 VirtualInheritance v3;
277 void take(VirtualInBase &);
278 void take(VirtualInVBase &);
279 void take(VirtualInheritance &);
281 void UnionsBarrier3(U3 &u) {
282 // CHECK-NEW-NOT: call i8* @llvm.invariant.group.barrier(i8*
285 // CHECK-NEW: call i8* @llvm.invariant.group.barrier(i8*
286 // CHECK-NEW: call void @_Z4takeR13VirtualInBase(
288 // CHECK-NEW: call i8* @llvm.invariant.group.barrier(i8*
289 // CHECK-NEW: call void @_Z4takeR13VirtualInBase(
292 // CHECK-NEW: call i8* @llvm.invariant.group.barrier(i8*
293 // CHECK-NEW: call void @_Z4takeR18VirtualInheritance(
298 // CHECK-DTORS-LABEL: define linkonce_odr void @_ZN10StaticBaseD2Ev(
299 // CHECK-DTORS-NOT: call i8* @llvm.invariant.group.barrier(
300 // CHECK-DTORS-LABEL: {{^}}}
303 // CHECK-DTORS-LABEL: define linkonce_odr void @_ZN25DynamicFromVirtualStatic2D2Ev(
304 // CHECK-DTORS-NOT: invariant.barrier
305 // CHECK-DTORS-LABEL: {{^}}}
307 // CHECK-DTORS-LABEL: define linkonce_odr void @_ZN17DynamicFromStaticD2Ev
308 // CHECK-DTORS-NOT: call i8* @llvm.invariant.group.barrier(
309 // CHECK-DTORS-LABEL: {{^}}}
312 // CHECK-DTORS-LABEL: define linkonce_odr void @_ZN22DynamicDerivedMultipleD2Ev(
314 // CHECK-DTORS-LABEL: define linkonce_odr void @_ZN12DynamicBase2D2Ev(
315 // CHECK-DTORS: call i8* @llvm.invariant.group.barrier(
316 // CHECK-DTORS-LABEL: {{^}}}
318 // CHECK-DTORS-LABEL: define linkonce_odr void @_ZN12DynamicBase1D2Ev
319 // CHECK-DTORS: call i8* @llvm.invariant.group.barrier(
320 // CHECK-DTORS-LABEL: {{^}}}
322 // CHECK-DTORS-LABEL: define linkonce_odr void @_ZN14DynamicDerivedD2Ev
323 // CHECK-DTORS-NOT: call i8* @llvm.invariant.group.barrier(
324 // CHECK-DTORS-LABEL: {{^}}}
327 // CHECK-LINK-REQ: !llvm.module.flags = !{![[FIRST:[0-9]+]], ![[SEC:[0-9]+]]{{.*}}}
329 // CHECK-LINK-REQ: ![[FIRST]] = !{i32 1, !"StrictVTablePointers", i32 1}
330 // CHECK-LINK-REQ: ![[SEC]] = !{i32 3, !"StrictVTablePointersRequirement", ![[META:.*]]}
331 // CHECK-LINK-REQ: ![[META]] = !{!"StrictVTablePointers", i32 1}