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      1 // RUN: %clang_cc1 -emit-llvm -fno-rtti %s -std=c++11 -o - -mconstructor-aliases -triple=i386-pc-win32 -fno-rtti > %t
      2 // RUN: FileCheck %s < %t
      3 // vftables are emitted very late, so do another pass to try to keep the checks
      4 // in source order.
      5 // RUN: FileCheck --check-prefix DTORS %s < %t
      6 // RUN: FileCheck --check-prefix DTORS2 %s < %t
      7 // RUN: FileCheck --check-prefix DTORS3 %s < %t
      8 //
      9 // RUN: %clang_cc1 -emit-llvm %s -o - -mconstructor-aliases -triple=x86_64-pc-win32 -fno-rtti | FileCheck --check-prefix DTORS-X64 %s
     10 
     11 namespace basic {
     12 
     13 class A {
     14  public:
     15   A() { }
     16   ~A();
     17 };
     18 
     19 void no_constructor_destructor_infinite_recursion() {
     20   A a;
     21 
     22 // CHECK:      define linkonce_odr x86_thiscallcc %"class.basic::A"* @"\01??0A@basic@@QAE@XZ"(%"class.basic::A"* returned %this) {{.*}} comdat {{.*}} {
     23 // CHECK:        [[THIS_ADDR:%[.0-9A-Z_a-z]+]] = alloca %"class.basic::A"*, align 4
     24 // CHECK-NEXT:   store %"class.basic::A"* %this, %"class.basic::A"** [[THIS_ADDR]], align 4
     25 // CHECK-NEXT:   [[T1:%[.0-9A-Z_a-z]+]] = load %"class.basic::A"*, %"class.basic::A"** [[THIS_ADDR]]
     26 // CHECK-NEXT:   ret %"class.basic::A"* [[T1]]
     27 // CHECK-NEXT: }
     28 }
     29 
     30 A::~A() {
     31 // Make sure that the destructor doesn't call itself:
     32 // CHECK: define {{.*}} @"\01??1A@basic@@QAE@XZ"
     33 // CHECK-NOT: call void @"\01??1A@basic@@QAE@XZ"
     34 // CHECK: ret
     35 }
     36 
     37 struct B {
     38   B();
     39 };
     40 
     41 // Tests that we can define constructors outside the class (PR12784).
     42 B::B() {
     43   // CHECK: define x86_thiscallcc %"struct.basic::B"* @"\01??0B@basic@@QAE@XZ"(%"struct.basic::B"* returned %this)
     44   // CHECK: ret
     45 }
     46 
     47 struct C {
     48   virtual ~C() {
     49 // DTORS:      define linkonce_odr x86_thiscallcc i8* @"\01??_GC@basic@@UAEPAXI@Z"(%"struct.basic::C"* %this, i32 %should_call_delete) {{.*}} comdat {{.*}} {
     50 // DTORS:        store i32 %should_call_delete, i32* %[[SHOULD_DELETE_VAR:[0-9a-z._]+]], align 4
     51 // DTORS:        store i8* %{{.*}}, i8** %[[RETVAL:[0-9a-z._]+]]
     52 // DTORS:        %[[SHOULD_DELETE_VALUE:[0-9a-z._]+]] = load i32, i32* %[[SHOULD_DELETE_VAR]]
     53 // DTORS:        call x86_thiscallcc void @"\01??1C@basic@@UAE@XZ"(%"struct.basic::C"* %[[THIS:[0-9a-z]+]])
     54 // DTORS-NEXT:   %[[CONDITION:[0-9]+]] = icmp eq i32 %[[SHOULD_DELETE_VALUE]], 0
     55 // DTORS-NEXT:   br i1 %[[CONDITION]], label %[[CONTINUE_LABEL:[0-9a-z._]+]], label %[[CALL_DELETE_LABEL:[0-9a-z._]+]]
     56 //
     57 // DTORS:      [[CALL_DELETE_LABEL]]
     58 // DTORS-NEXT:   %[[THIS_AS_VOID:[0-9a-z]+]] = bitcast %"struct.basic::C"* %[[THIS]] to i8*
     59 // DTORS-NEXT:   call void @"\01??3@YAXPAX@Z"(i8* %[[THIS_AS_VOID]])
     60 // DTORS-NEXT:   br label %[[CONTINUE_LABEL]]
     61 //
     62 // DTORS:      [[CONTINUE_LABEL]]
     63 // DTORS-NEXT:   %[[RET:.*]] = load i8*, i8** %[[RETVAL]]
     64 // DTORS-NEXT:   ret i8* %[[RET]]
     65 
     66 // Check that we do the mangling correctly on x64.
     67 // DTORS-X64:  @"\01??_GC@basic@@UEAAPEAXI@Z"
     68   }
     69   virtual void foo();
     70 };
     71 
     72 // Emits the vftable in the output.
     73 void C::foo() {}
     74 
     75 void check_vftable_offset() {
     76   C c;
     77 // The vftable pointer should point at the beginning of the vftable.
     78 // CHECK: [[THIS_PTR:%[0-9]+]] = bitcast %"struct.basic::C"* {{.*}} to i32 (...)***
     79 // CHECK: store i32 (...)** bitcast ([2 x i8*]* @"\01??_7C@basic@@6B@" to i32 (...)**), i32 (...)*** [[THIS_PTR]]
     80 }
     81 
     82 void call_complete_dtor(C *obj_ptr) {
     83 // CHECK: define void @"\01?call_complete_dtor@basic@@YAXPAUC@1@@Z"(%"struct.basic::C"* %obj_ptr)
     84   obj_ptr->~C();
     85 // CHECK: %[[OBJ_PTR_VALUE:.*]] = load %"struct.basic::C"*, %"struct.basic::C"** %{{.*}}, align 4
     86 // CHECK-NEXT: %[[PVTABLE:.*]] = bitcast %"struct.basic::C"* %[[OBJ_PTR_VALUE]] to i8* (%"struct.basic::C"*, i32)***
     87 // CHECK-NEXT: %[[VTABLE:.*]] = load i8* (%"struct.basic::C"*, i32)**, i8* (%"struct.basic::C"*, i32)*** %[[PVTABLE]]
     88 // CHECK-NEXT: %[[PVDTOR:.*]] = getelementptr inbounds i8* (%"struct.basic::C"*, i32)*, i8* (%"struct.basic::C"*, i32)** %[[VTABLE]], i64 0
     89 // CHECK-NEXT: %[[VDTOR:.*]] = load i8* (%"struct.basic::C"*, i32)*, i8* (%"struct.basic::C"*, i32)** %[[PVDTOR]]
     90 // CHECK-NEXT: call x86_thiscallcc i8* %[[VDTOR]](%"struct.basic::C"* %[[OBJ_PTR_VALUE]], i32 0)
     91 // CHECK-NEXT: ret void
     92 }
     93 
     94 void call_deleting_dtor(C *obj_ptr) {
     95 // CHECK: define void @"\01?call_deleting_dtor@basic@@YAXPAUC@1@@Z"(%"struct.basic::C"* %obj_ptr)
     96   delete obj_ptr;
     97 // CHECK:      %[[OBJ_PTR_VALUE:.*]] = load %"struct.basic::C"*, %"struct.basic::C"** %{{.*}}, align 4
     98 // CHECK:      br i1 {{.*}}, label %[[DELETE_NULL:.*]], label %[[DELETE_NOTNULL:.*]]
     99 
    100 // CHECK:      [[DELETE_NOTNULL]]
    101 // CHECK-NEXT:   %[[PVTABLE:.*]] = bitcast %"struct.basic::C"* %[[OBJ_PTR_VALUE]] to i8* (%"struct.basic::C"*, i32)***
    102 // CHECK-NEXT:   %[[VTABLE:.*]] = load i8* (%"struct.basic::C"*, i32)**, i8* (%"struct.basic::C"*, i32)*** %[[PVTABLE]]
    103 // CHECK-NEXT:   %[[PVDTOR:.*]] = getelementptr inbounds i8* (%"struct.basic::C"*, i32)*, i8* (%"struct.basic::C"*, i32)** %[[VTABLE]], i64 0
    104 // CHECK-NEXT:   %[[VDTOR:.*]] = load i8* (%"struct.basic::C"*, i32)*, i8* (%"struct.basic::C"*, i32)** %[[PVDTOR]]
    105 // CHECK-NEXT:   call x86_thiscallcc i8* %[[VDTOR]](%"struct.basic::C"* %[[OBJ_PTR_VALUE]], i32 1)
    106 // CHECK:      ret void
    107 }
    108 
    109 void call_deleting_dtor_and_global_delete(C *obj_ptr) {
    110 // CHECK: define void @"\01?call_deleting_dtor_and_global_delete@basic@@YAXPAUC@1@@Z"(%"struct.basic::C"* %obj_ptr)
    111   ::delete obj_ptr;
    112 // CHECK:      %[[OBJ_PTR_VALUE:.*]] = load %"struct.basic::C"*, %"struct.basic::C"** %{{.*}}, align 4
    113 // CHECK:      br i1 {{.*}}, label %[[DELETE_NULL:.*]], label %[[DELETE_NOTNULL:.*]]
    114 
    115 // CHECK:      [[DELETE_NOTNULL]]
    116 // CHECK-NEXT:   %[[PVTABLE:.*]] = bitcast %"struct.basic::C"* %[[OBJ_PTR_VALUE]] to i8* (%"struct.basic::C"*, i32)***
    117 // CHECK-NEXT:   %[[VTABLE:.*]] = load i8* (%"struct.basic::C"*, i32)**, i8* (%"struct.basic::C"*, i32)*** %[[PVTABLE]]
    118 // CHECK-NEXT:   %[[PVDTOR:.*]] = getelementptr inbounds i8* (%"struct.basic::C"*, i32)*, i8* (%"struct.basic::C"*, i32)** %[[VTABLE]], i64 0
    119 // CHECK-NEXT:   %[[VDTOR:.*]] = load i8* (%"struct.basic::C"*, i32)*, i8* (%"struct.basic::C"*, i32)** %[[PVDTOR]]
    120 // CHECK-NEXT:   %[[CALL:.*]] = call x86_thiscallcc i8* %[[VDTOR]](%"struct.basic::C"* %[[OBJ_PTR_VALUE]], i32 0)
    121 // CHECK-NEXT:   call void @"\01??3@YAXPAX@Z"(i8* %[[CALL]])
    122 // CHECK:      ret void
    123 }
    124 
    125 struct D {
    126   static int foo();
    127 
    128   D() {
    129     static int ctor_static = foo();
    130     // CHECK that the static in the ctor gets mangled correctly:
    131     // CHECK: @"\01?ctor_static@?1???0D@basic@@QAE@XZ@4HA"
    132   }
    133   ~D() {
    134     static int dtor_static = foo();
    135     // CHECK that the static in the dtor gets mangled correctly:
    136     // CHECK: @"\01?dtor_static@?1???1D@basic@@QAE@XZ@4HA"
    137   }
    138 };
    139 
    140 void use_D() { D c; }
    141 
    142 } // end namespace basic
    143 
    144 namespace dtor_in_second_nvbase {
    145 
    146 struct A {
    147   virtual void f();  // A needs vftable to be primary.
    148 };
    149 struct B {
    150   virtual ~B();
    151 };
    152 struct C : A, B {
    153   virtual ~C();
    154 };
    155 
    156 C::~C() {
    157 // CHECK-LABEL: define x86_thiscallcc void @"\01??1C@dtor_in_second_nvbase@@UAE@XZ"
    158 // CHECK:       (%"struct.dtor_in_second_nvbase::C"* %this)
    159 //      No this adjustment!
    160 // CHECK-NOT: getelementptr
    161 // CHECK:   load %"struct.dtor_in_second_nvbase::C"*, %"struct.dtor_in_second_nvbase::C"** %{{.*}}
    162 //      Now we this-adjust before calling ~B.
    163 // CHECK:   bitcast %"struct.dtor_in_second_nvbase::C"* %{{.*}} to i8*
    164 // CHECK:   getelementptr inbounds i8, i8* %{{.*}}, i64 4
    165 // CHECK:   bitcast i8* %{{.*}} to %"struct.dtor_in_second_nvbase::B"*
    166 // CHECK:   call x86_thiscallcc void @"\01??1B@dtor_in_second_nvbase@@UAE@XZ"
    167 // CHECK:       (%"struct.dtor_in_second_nvbase::B"* %{{.*}})
    168 // CHECK:   ret void
    169 }
    170 
    171 void foo() {
    172   C c;
    173 }
    174 // DTORS2-LABEL: define linkonce_odr x86_thiscallcc i8* @"\01??_EC@dtor_in_second_nvbase@@W3AEPAXI@Z"
    175 // DTORS2:       (%"struct.dtor_in_second_nvbase::C"* %this, i32 %should_call_delete)
    176 //      Do an adjustment from B* to C*.
    177 // DTORS2:   getelementptr i8, i8* %{{.*}}, i32 -4
    178 // DTORS2:   bitcast i8* %{{.*}} to %"struct.dtor_in_second_nvbase::C"*
    179 // DTORS2:   %[[CALL:.*]] = call x86_thiscallcc i8* @"\01??_GC@dtor_in_second_nvbase@@UAEPAXI@Z"
    180 // DTORS2:   ret i8* %[[CALL]]
    181 
    182 }
    183 
    184 namespace test2 {
    185 // Just like dtor_in_second_nvbase, except put that in a vbase of a diamond.
    186 
    187 // C's dtor is in the non-primary base.
    188 struct A { virtual void f(); };
    189 struct B { virtual ~B(); };
    190 struct C : A, B { virtual ~C(); int c; };
    191 
    192 // Diamond hierarchy, with C as the shared vbase.
    193 struct D : virtual C { int d; };
    194 struct E : virtual C { int e; };
    195 struct F : D, E { ~F(); int f; };
    196 
    197 F::~F() {
    198 // CHECK-LABEL: define x86_thiscallcc void @"\01??1F@test2@@UAE@XZ"(%"struct.test2::F"*)
    199 //      Do an adjustment from C vbase subobject to F as though F was the
    200 //      complete type.
    201 // CHECK:   getelementptr inbounds i8, i8* %{{.*}}, i32 -20
    202 // CHECK:   bitcast i8* %{{.*}} to %"struct.test2::F"*
    203 // CHECK:   store %"struct.test2::F"*
    204 }
    205 
    206 void foo() {
    207   F f;
    208 }
    209 // DTORS3-LABEL: define linkonce_odr x86_thiscallcc void @"\01??_DF@test2@@UAE@XZ"({{.*}} {{.*}} comdat
    210 //      Do an adjustment from C* to F*.
    211 // DTORS3:   getelementptr i8, i8* %{{.*}}, i32 20
    212 // DTORS3:   bitcast i8* %{{.*}} to %"struct.test2::F"*
    213 // DTORS3:   call x86_thiscallcc void @"\01??1F@test2@@UAE@XZ"
    214 // DTORS3:   ret void
    215 
    216 }
    217 
    218 namespace constructors {
    219 
    220 struct A {
    221   A() {}
    222 };
    223 
    224 struct B : A {
    225   B();
    226   ~B();
    227 };
    228 
    229 B::B() {
    230   // CHECK: define x86_thiscallcc %"struct.constructors::B"* @"\01??0B@constructors@@QAE@XZ"(%"struct.constructors::B"* returned %this)
    231   // CHECK: call x86_thiscallcc %"struct.constructors::A"* @"\01??0A@constructors@@QAE@XZ"(%"struct.constructors::A"* %{{.*}})
    232   // CHECK: ret
    233 }
    234 
    235 struct C : virtual A {
    236   C();
    237 };
    238 
    239 C::C() {
    240   // CHECK: define x86_thiscallcc %"struct.constructors::C"* @"\01??0C@constructors@@QAE@XZ"(%"struct.constructors::C"* returned %this, i32 %is_most_derived)
    241   // TODO: make sure this works in the Release build too;
    242   // CHECK: store i32 %is_most_derived, i32* %[[IS_MOST_DERIVED_VAR:.*]], align 4
    243   // CHECK: %[[IS_MOST_DERIVED_VAL:.*]] = load i32, i32* %[[IS_MOST_DERIVED_VAR]]
    244   // CHECK: %[[SHOULD_CALL_VBASE_CTORS:.*]] = icmp ne i32 %[[IS_MOST_DERIVED_VAL]], 0
    245   // CHECK: br i1 %[[SHOULD_CALL_VBASE_CTORS]], label %[[INIT_VBASES:.*]], label %[[SKIP_VBASES:.*]]
    246   //
    247   // CHECK: [[INIT_VBASES]]
    248   // CHECK-NEXT: %[[this_i8:.*]] = bitcast %"struct.constructors::C"* %{{.*}} to i8*
    249   // CHECK-NEXT: %[[vbptr_off:.*]] = getelementptr inbounds i8, i8* %[[this_i8]], i64 0
    250   // CHECK-NEXT: %[[vbptr:.*]] = bitcast i8* %[[vbptr_off]] to i32**
    251   // CHECK-NEXT: store i32* getelementptr inbounds ([2 x i32], [2 x i32]* @"\01??_8C@constructors@@7B@", i32 0, i32 0), i32** %[[vbptr]]
    252   // CHECK-NEXT: bitcast %"struct.constructors::C"* %{{.*}} to i8*
    253   // CHECK-NEXT: getelementptr inbounds i8, i8* %{{.*}}, i64 4
    254   // CHECK-NEXT: bitcast i8* %{{.*}} to %"struct.constructors::A"*
    255   // CHECK-NEXT: call x86_thiscallcc %"struct.constructors::A"* @"\01??0A@constructors@@QAE@XZ"(%"struct.constructors::A"* %{{.*}})
    256   // CHECK-NEXT: br label %[[SKIP_VBASES]]
    257   //
    258   // CHECK: [[SKIP_VBASES]]
    259   // Class C does not define or override methods, so shouldn't change the vfptr.
    260   // CHECK-NOT: @"\01??_7C@constructors@@6B@"
    261   // CHECK: ret
    262 }
    263 
    264 void create_C() {
    265   C c;
    266   // CHECK: define void @"\01?create_C@constructors@@YAXXZ"()
    267   // CHECK: call x86_thiscallcc %"struct.constructors::C"* @"\01??0C@constructors@@QAE@XZ"(%"struct.constructors::C"* %c, i32 1)
    268   // CHECK: ret
    269 }
    270 
    271 struct D : C {
    272   D();
    273 };
    274 
    275 D::D() {
    276   // CHECK: define x86_thiscallcc %"struct.constructors::D"* @"\01??0D@constructors@@QAE@XZ"(%"struct.constructors::D"* returned %this, i32 %is_most_derived) unnamed_addr
    277   // CHECK: store i32 %is_most_derived, i32* %[[IS_MOST_DERIVED_VAR:.*]], align 4
    278   // CHECK: %[[IS_MOST_DERIVED_VAL:.*]] = load i32, i32* %[[IS_MOST_DERIVED_VAR]]
    279   // CHECK: %[[SHOULD_CALL_VBASE_CTORS:.*]] = icmp ne i32 %[[IS_MOST_DERIVED_VAL]], 0
    280   // CHECK: br i1 %[[SHOULD_CALL_VBASE_CTORS]], label %[[INIT_VBASES:.*]], label %[[SKIP_VBASES:.*]]
    281   //
    282   // CHECK: [[INIT_VBASES]]
    283   // CHECK-NEXT: %[[this_i8:.*]] = bitcast %"struct.constructors::D"* %{{.*}} to i8*
    284   // CHECK-NEXT: %[[vbptr_off:.*]] = getelementptr inbounds i8, i8* %[[this_i8]], i64 0
    285   // CHECK-NEXT: %[[vbptr:.*]] = bitcast i8* %[[vbptr_off]] to i32**
    286   // CHECK-NEXT: store i32* getelementptr inbounds ([2 x i32], [2 x i32]* @"\01??_8D@constructors@@7B@", i32 0, i32 0), i32** %[[vbptr]]
    287   // CHECK-NEXT: bitcast %"struct.constructors::D"* %{{.*}} to i8*
    288   // CHECK-NEXT: getelementptr inbounds i8, i8* %{{.*}}, i64 4
    289   // CHECK-NEXT: bitcast i8* %{{.*}} to %"struct.constructors::A"*
    290   // CHECK-NEXT: call x86_thiscallcc %"struct.constructors::A"* @"\01??0A@constructors@@QAE@XZ"(%"struct.constructors::A"* %{{.*}})
    291   // CHECK-NEXT: br label %[[SKIP_VBASES]]
    292   //
    293   // CHECK: [[SKIP_VBASES]]
    294   // CHECK: call x86_thiscallcc %"struct.constructors::C"* @"\01??0C@constructors@@QAE@XZ"(%"struct.constructors::C"* %{{.*}}, i32 0)
    295   // CHECK: ret
    296 }
    297 
    298 struct E : virtual C {
    299   E();
    300 };
    301 
    302 E::E() {
    303   // CHECK: define x86_thiscallcc %"struct.constructors::E"* @"\01??0E@constructors@@QAE@XZ"(%"struct.constructors::E"* returned %this, i32 %is_most_derived) unnamed_addr
    304   // CHECK: store i32 %is_most_derived, i32* %[[IS_MOST_DERIVED_VAR:.*]], align 4
    305   // CHECK: %[[IS_MOST_DERIVED_VAL:.*]] = load i32, i32* %[[IS_MOST_DERIVED_VAR]]
    306   // CHECK: %[[SHOULD_CALL_VBASE_CTORS:.*]] = icmp ne i32 %[[IS_MOST_DERIVED_VAL]], 0
    307   // CHECK: br i1 %[[SHOULD_CALL_VBASE_CTORS]], label %[[INIT_VBASES:.*]], label %[[SKIP_VBASES:.*]]
    308   //
    309   // CHECK: [[INIT_VBASES]]
    310   // CHECK-NEXT: %[[this_i8:.*]] = bitcast %"struct.constructors::E"* %{{.*}} to i8*
    311   // CHECK-NEXT: %[[offs:.*]] = getelementptr inbounds i8, i8* %[[this_i8]], i64 0
    312   // CHECK-NEXT: %[[vbptr_E:.*]] = bitcast i8* %[[offs]] to i32**
    313   // CHECK-NEXT: store i32* getelementptr inbounds ([3 x i32], [3 x i32]* @"\01??_8E@constructors@@7B01@@", i32 0, i32 0), i32** %[[vbptr_E]]
    314   // CHECK-NEXT: %[[offs:.*]] = getelementptr inbounds i8, i8* %[[this_i8]], i64 4
    315   // CHECK-NEXT: %[[vbptr_C:.*]] = bitcast i8* %[[offs]] to i32**
    316   // CHECK-NEXT: store i32* getelementptr inbounds ([2 x i32], [2 x i32]* @"\01??_8E@constructors@@7BC@1@@", i32 0, i32 0), i32** %[[vbptr_C]]
    317   // CHECK-NEXT: bitcast %"struct.constructors::E"* %{{.*}} to i8*
    318   // CHECK-NEXT: getelementptr inbounds i8, i8* %{{.*}}, i64 4
    319   // CHECK-NEXT: bitcast i8* %{{.*}} to %"struct.constructors::A"*
    320   // CHECK-NEXT: call x86_thiscallcc %"struct.constructors::A"* @"\01??0A@constructors@@QAE@XZ"(%"struct.constructors::A"* %{{.*}})
    321   // CHECK: call x86_thiscallcc %"struct.constructors::C"* @"\01??0C@constructors@@QAE@XZ"(%"struct.constructors::C"* %{{.*}}, i32 0)
    322   // CHECK-NEXT: br label %[[SKIP_VBASES]]
    323   //
    324   // CHECK: [[SKIP_VBASES]]
    325   // CHECK: ret
    326 }
    327 
    328 // PR16735 - even abstract classes should have a constructor emitted.
    329 struct F {
    330   F();
    331   virtual void f() = 0;
    332 };
    333 
    334 F::F() {}
    335 // CHECK: define x86_thiscallcc %"struct.constructors::F"* @"\01??0F@constructors@@QAE@XZ"
    336 
    337 } // end namespace constructors
    338 
    339 namespace dtors {
    340 
    341 struct A {
    342   ~A();
    343 };
    344 
    345 void call_nv_complete(A *a) {
    346   a->~A();
    347 // CHECK: define void @"\01?call_nv_complete@dtors@@YAXPAUA@1@@Z"
    348 // CHECK: call x86_thiscallcc void @"\01??1A@dtors@@QAE@XZ"
    349 // CHECK: ret
    350 }
    351 
    352 // CHECK: declare x86_thiscallcc void @"\01??1A@dtors@@QAE@XZ"
    353 
    354 // Now try some virtual bases, where we need the complete dtor.
    355 
    356 struct B : virtual A { ~B(); };
    357 struct C : virtual A { ~C(); };
    358 struct D : B, C { ~D(); };
    359 
    360 void call_vbase_complete(D *d) {
    361   d->~D();
    362 // CHECK: define void @"\01?call_vbase_complete@dtors@@YAXPAUD@1@@Z"
    363 // CHECK: call x86_thiscallcc void @"\01??_DD@dtors@@QAE@XZ"(%"struct.dtors::D"* %{{[^,]+}})
    364 // CHECK: ret
    365 }
    366 
    367 // The complete dtor should call the base dtors for D and the vbase A (once).
    368 // CHECK: define linkonce_odr x86_thiscallcc void @"\01??_DD@dtors@@QAE@XZ"({{.*}}) {{.*}} comdat
    369 // CHECK-NOT: call
    370 // CHECK: call x86_thiscallcc void @"\01??1D@dtors@@QAE@XZ"
    371 // CHECK-NOT: call
    372 // CHECK: call x86_thiscallcc void @"\01??1A@dtors@@QAE@XZ"
    373 // CHECK-NOT: call
    374 // CHECK: ret
    375 
    376 void destroy_d_complete() {
    377   D d;
    378 // CHECK: define void @"\01?destroy_d_complete@dtors@@YAXXZ"
    379 // CHECK: call x86_thiscallcc void @"\01??_DD@dtors@@QAE@XZ"(%"struct.dtors::D"* %{{[^,]+}})
    380 // CHECK: ret
    381 }
    382 
    383 // FIXME: Clang manually inlines the deletion, so we don't get a call to the
    384 // deleting dtor (_G).  The only way to call deleting dtors currently is through
    385 // a vftable.
    386 void call_nv_deleting_dtor(D *d) {
    387   delete d;
    388 // CHECK: define void @"\01?call_nv_deleting_dtor@dtors@@YAXPAUD@1@@Z"
    389 // CHECK: call x86_thiscallcc void @"\01??_DD@dtors@@QAE@XZ"(%"struct.dtors::D"* %{{[^,]+}})
    390 // CHECK: call void @"\01??3@YAXPAX@Z"
    391 // CHECK: ret
    392 }
    393 
    394 }
    395 
    396 namespace test1 {
    397 struct A { };
    398 struct B : virtual A {
    399   B(int *a);
    400   B(const char *a, ...);
    401   __cdecl B(short *a);
    402 };
    403 B::B(int *a) {}
    404 B::B(const char *a, ...) {}
    405 B::B(short *a) {}
    406 // CHECK: define x86_thiscallcc %"struct.test1::B"* @"\01??0B@test1@@QAE@PAH@Z"
    407 // CHECK:               (%"struct.test1::B"* returned %this, i32* %a, i32 %is_most_derived)
    408 // CHECK: define %"struct.test1::B"* @"\01??0B@test1@@QAA@PBDZZ"
    409 // CHECK:               (%"struct.test1::B"* returned %this, i32 %is_most_derived, i8* %a, ...)
    410 
    411 // FIXME: This should be x86_thiscallcc.  MSVC ignores explicit CCs on structors.
    412 // CHECK: define %"struct.test1::B"* @"\01??0B@test1@@QAA@PAF@Z"
    413 // CHECK:               (%"struct.test1::B"* returned %this, i16* %a, i32 %is_most_derived)
    414 
    415 void construct_b() {
    416   int a;
    417   B b1(&a);
    418   B b2("%d %d", 1, 2);
    419 }
    420 // CHECK-LABEL: define void @"\01?construct_b@test1@@YAXXZ"()
    421 // CHECK: call x86_thiscallcc %"struct.test1::B"* @"\01??0B@test1@@QAE@PAH@Z"
    422 // CHECK:               (%"struct.test1::B"* {{.*}}, i32* {{.*}}, i32 1)
    423 // CHECK: call %"struct.test1::B"* (%"struct.test1::B"*, i32, i8*, ...) @"\01??0B@test1@@QAA@PBDZZ"
    424 // CHECK:               (%"struct.test1::B"* {{.*}}, i32 1, i8* {{.*}}, i32 1, i32 2)
    425 }
    426 
    427 namespace implicit_copy_vtable {
    428 // This was a crash that only reproduced in ABIs without key functions.
    429 struct ImplicitCopy {
    430   // implicit copy ctor
    431   virtual ~ImplicitCopy();
    432 };
    433 void CreateCopy(ImplicitCopy *a) {
    434   new ImplicitCopy(*a);
    435 }
    436 // CHECK: store {{.*}} @"\01??_7ImplicitCopy@implicit_copy_vtable@@6B@"
    437 
    438 struct MoveOnly {
    439   MoveOnly(MoveOnly &&o) = default;
    440   virtual ~MoveOnly();
    441 };
    442 MoveOnly &&f();
    443 void g() { new MoveOnly(f()); }
    444 // CHECK: store {{.*}} @"\01??_7MoveOnly@implicit_copy_vtable@@6B@"
    445 }
    446 
    447 // Dtor thunks for classes in anonymous namespaces should be internal, not
    448 // linkonce_odr.
    449 namespace {
    450 struct A {
    451   virtual ~A() { }
    452 };
    453 }
    454 void *getA() {
    455   return (void*)new A();
    456 }
    457 // CHECK: define internal x86_thiscallcc i8* @"\01??_GA@?A@@UAEPAXI@Z"
    458 // CHECK:               (%"struct.(anonymous namespace)::A"* %this, i32 %should_call_delete)
    459 // CHECK: define internal x86_thiscallcc void @"\01??1A@?A@@UAE@XZ"
    460 // CHECK:               (%"struct.(anonymous namespace)::A"* %this)
    461