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(); 25 ~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: } 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: } 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: } 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, i64 0, i64 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, i64 0, i64 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
