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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 // RUN: FileCheck --check-prefix DTORS4 %s < %t
      9 //
     10 // RUN: %clang_cc1 -emit-llvm %s -o - -mconstructor-aliases -triple=x86_64-pc-win32 -fno-rtti -std=c++11 | FileCheck --check-prefix DTORS-X64 %s
     11 
     12 namespace basic {
     13 
     14 class A {
     15  public:
     16   A() { }
     17   ~A();
     18 };
     19 
     20 void no_constructor_destructor_infinite_recursion() {
     21   A a;
     22 
     23 // CHECK:      define linkonce_odr x86_thiscallcc %"class.basic::A"* @"\01??0A@basic@@QAE@XZ"(%"class.basic::A"* returned %this) {{.*}} comdat {{.*}} {
     24 // CHECK:        [[THIS_ADDR:%[.0-9A-Z_a-z]+]] = alloca %"class.basic::A"*, align 4
     25 // CHECK-NEXT:   store %"class.basic::A"* %this, %"class.basic::A"** [[THIS_ADDR]], align 4
     26 // CHECK-NEXT:   [[T1:%[.0-9A-Z_a-z]+]] = load %"class.basic::A"*, %"class.basic::A"** [[THIS_ADDR]]
     27 // CHECK-NEXT:   ret %"class.basic::A"* [[T1]]
     28 // CHECK-NEXT: }
     29 }
     30 
     31 A::~A() {
     32 // Make sure that the destructor doesn't call itself:
     33 // CHECK: define {{.*}} @"\01??1A@basic@@QAE@XZ"
     34 // CHECK-NOT: call void @"\01??1A@basic@@QAE@XZ"
     35 // CHECK: ret
     36 }
     37 
     38 struct B {
     39   B();
     40 };
     41 
     42 // Tests that we can define constructors outside the class (PR12784).
     43 B::B() {
     44   // CHECK: define x86_thiscallcc %"struct.basic::B"* @"\01??0B@basic@@QAE@XZ"(%"struct.basic::B"* returned %this)
     45   // CHECK: ret
     46 }
     47 
     48 struct C {
     49   virtual ~C() {
     50 // DTORS:      define linkonce_odr x86_thiscallcc i8* @"\01??_GC@basic@@UAEPAXI@Z"(%"struct.basic::C"* %this, i32 %should_call_delete) {{.*}} comdat {{.*}} {
     51 // DTORS:        store i32 %should_call_delete, i32* %[[SHOULD_DELETE_VAR:[0-9a-z._]+]], align 4
     52 // DTORS:        store i8* %{{.*}}, i8** %[[RETVAL:[0-9a-z._]+]]
     53 // DTORS:        %[[SHOULD_DELETE_VALUE:[0-9a-z._]+]] = load i32, i32* %[[SHOULD_DELETE_VAR]]
     54 // DTORS:        call x86_thiscallcc void @"\01??1C@basic@@UAE@XZ"(%"struct.basic::C"* %[[THIS:[0-9a-z]+]])
     55 // DTORS-NEXT:   %[[CONDITION:[0-9]+]] = icmp eq i32 %[[SHOULD_DELETE_VALUE]], 0
     56 // DTORS-NEXT:   br i1 %[[CONDITION]], label %[[CONTINUE_LABEL:[0-9a-z._]+]], label %[[CALL_DELETE_LABEL:[0-9a-z._]+]]
     57 //
     58 // DTORS:      [[CALL_DELETE_LABEL]]
     59 // DTORS-NEXT:   %[[THIS_AS_VOID:[0-9a-z]+]] = bitcast %"struct.basic::C"* %[[THIS]] to i8*
     60 // DTORS-NEXT:   call void @"\01??3@YAXPAX@Z"(i8* %[[THIS_AS_VOID]])
     61 // DTORS-NEXT:   br label %[[CONTINUE_LABEL]]
     62 //
     63 // DTORS:      [[CONTINUE_LABEL]]
     64 // DTORS-NEXT:   %[[RET:.*]] = load i8*, i8** %[[RETVAL]]
     65 // DTORS-NEXT:   ret i8* %[[RET]]
     66 
     67 // Check that we do the mangling correctly on x64.
     68 // DTORS-X64:  @"\01??_GC@basic@@UEAAPEAXI@Z"
     69   }
     70   virtual void foo();
     71 };
     72 
     73 // Emits the vftable in the output.
     74 void C::foo() {}
     75 
     76 void check_vftable_offset() {
     77   C c;
     78 // The vftable pointer should point at the beginning of the vftable.
     79 // CHECK: [[THIS_PTR:%[0-9]+]] = bitcast %"struct.basic::C"* {{.*}} to i32 (...)***
     80 // CHECK: store i32 (...)** bitcast ([2 x i8*]* @"\01??_7C@basic@@6B@" to i32 (...)**), i32 (...)*** [[THIS_PTR]]
     81 }
     82 
     83 void call_complete_dtor(C *obj_ptr) {
     84 // CHECK: define void @"\01?call_complete_dtor@basic@@YAXPAUC@1@@Z"(%"struct.basic::C"* %obj_ptr)
     85   obj_ptr->~C();
     86 // CHECK: %[[OBJ_PTR_VALUE:.*]] = load %"struct.basic::C"*, %"struct.basic::C"** %{{.*}}, align 4
     87 // CHECK-NEXT: %[[PVTABLE:.*]] = bitcast %"struct.basic::C"* %[[OBJ_PTR_VALUE]] to i8* (%"struct.basic::C"*, i32)***
     88 // CHECK-NEXT: %[[VTABLE:.*]] = load i8* (%"struct.basic::C"*, i32)**, i8* (%"struct.basic::C"*, i32)*** %[[PVTABLE]]
     89 // CHECK-NEXT: %[[PVDTOR:.*]] = getelementptr inbounds i8* (%"struct.basic::C"*, i32)*, i8* (%"struct.basic::C"*, i32)** %[[VTABLE]], i64 0
     90 // CHECK-NEXT: %[[VDTOR:.*]] = load i8* (%"struct.basic::C"*, i32)*, i8* (%"struct.basic::C"*, i32)** %[[PVDTOR]]
     91 // CHECK-NEXT: call x86_thiscallcc i8* %[[VDTOR]](%"struct.basic::C"* %[[OBJ_PTR_VALUE]], i32 0)
     92 // CHECK-NEXT: ret void
     93 }
     94 
     95 void call_deleting_dtor(C *obj_ptr) {
     96 // CHECK: define void @"\01?call_deleting_dtor@basic@@YAXPAUC@1@@Z"(%"struct.basic::C"* %obj_ptr)
     97   delete obj_ptr;
     98 // CHECK:      %[[OBJ_PTR_VALUE:.*]] = load %"struct.basic::C"*, %"struct.basic::C"** %{{.*}}, align 4
     99 // CHECK:      br i1 {{.*}}, label %[[DELETE_NULL:.*]], label %[[DELETE_NOTNULL:.*]]
    100 
    101 // CHECK:      [[DELETE_NOTNULL]]
    102 // CHECK-NEXT:   %[[PVTABLE:.*]] = bitcast %"struct.basic::C"* %[[OBJ_PTR_VALUE]] to i8* (%"struct.basic::C"*, i32)***
    103 // CHECK-NEXT:   %[[VTABLE:.*]] = load i8* (%"struct.basic::C"*, i32)**, i8* (%"struct.basic::C"*, i32)*** %[[PVTABLE]]
    104 // CHECK-NEXT:   %[[PVDTOR:.*]] = getelementptr inbounds i8* (%"struct.basic::C"*, i32)*, i8* (%"struct.basic::C"*, i32)** %[[VTABLE]], i64 0
    105 // CHECK-NEXT:   %[[VDTOR:.*]] = load i8* (%"struct.basic::C"*, i32)*, i8* (%"struct.basic::C"*, i32)** %[[PVDTOR]]
    106 // CHECK-NEXT:   call x86_thiscallcc i8* %[[VDTOR]](%"struct.basic::C"* %[[OBJ_PTR_VALUE]], i32 1)
    107 // CHECK:      ret void
    108 }
    109 
    110 void call_deleting_dtor_and_global_delete(C *obj_ptr) {
    111 // CHECK: define void @"\01?call_deleting_dtor_and_global_delete@basic@@YAXPAUC@1@@Z"(%"struct.basic::C"* %obj_ptr)
    112   ::delete obj_ptr;
    113 // CHECK:      %[[OBJ_PTR_VALUE:.*]] = load %"struct.basic::C"*, %"struct.basic::C"** %{{.*}}, align 4
    114 // CHECK:      br i1 {{.*}}, label %[[DELETE_NULL:.*]], label %[[DELETE_NOTNULL:.*]]
    115 
    116 // CHECK:      [[DELETE_NOTNULL]]
    117 // CHECK-NEXT:   %[[PVTABLE:.*]] = bitcast %"struct.basic::C"* %[[OBJ_PTR_VALUE]] to i8* (%"struct.basic::C"*, i32)***
    118 // CHECK-NEXT:   %[[VTABLE:.*]] = load i8* (%"struct.basic::C"*, i32)**, i8* (%"struct.basic::C"*, i32)*** %[[PVTABLE]]
    119 // CHECK-NEXT:   %[[PVDTOR:.*]] = getelementptr inbounds i8* (%"struct.basic::C"*, i32)*, i8* (%"struct.basic::C"*, i32)** %[[VTABLE]], i64 0
    120 // CHECK-NEXT:   %[[VDTOR:.*]] = load i8* (%"struct.basic::C"*, i32)*, i8* (%"struct.basic::C"*, i32)** %[[PVDTOR]]
    121 // CHECK-NEXT:   %[[CALL:.*]] = call x86_thiscallcc i8* %[[VDTOR]](%"struct.basic::C"* %[[OBJ_PTR_VALUE]], i32 0)
    122 // CHECK-NEXT:   call void @"\01??3@YAXPAX@Z"(i8* %[[CALL]])
    123 // CHECK:      ret void
    124 }
    125 
    126 struct D {
    127   static int foo();
    128 
    129   D() {
    130     static int ctor_static = foo();
    131     // CHECK that the static in the ctor gets mangled correctly:
    132     // CHECK: @"\01?ctor_static@?1???0D@basic@@QAE@XZ@4HA"
    133   }
    134   ~D() {
    135     static int dtor_static = foo();
    136     // CHECK that the static in the dtor gets mangled correctly:
    137     // CHECK: @"\01?dtor_static@?1???1D@basic@@QAE@XZ@4HA"
    138   }
    139 };
    140 
    141 void use_D() { D c; }
    142 
    143 } // end namespace basic
    144 
    145 namespace dtor_in_second_nvbase {
    146 
    147 struct A {
    148   virtual void f();  // A needs vftable to be primary.
    149 };
    150 struct B {
    151   virtual ~B();
    152 };
    153 struct C : A, B {
    154   virtual ~C();
    155 };
    156 
    157 C::~C() {
    158 // CHECK-LABEL: define x86_thiscallcc void @"\01??1C@dtor_in_second_nvbase@@UAE@XZ"
    159 // CHECK:       (%"struct.dtor_in_second_nvbase::C"* %this)
    160 //      No this adjustment!
    161 // CHECK-NOT: getelementptr
    162 // CHECK:   load %"struct.dtor_in_second_nvbase::C"*, %"struct.dtor_in_second_nvbase::C"** %{{.*}}
    163 //      Now we this-adjust before calling ~B.
    164 // CHECK:   bitcast %"struct.dtor_in_second_nvbase::C"* %{{.*}} to i8*
    165 // CHECK:   getelementptr inbounds i8, i8* %{{.*}}, i32 4
    166 // CHECK:   bitcast i8* %{{.*}} to %"struct.dtor_in_second_nvbase::B"*
    167 // CHECK:   call x86_thiscallcc void @"\01??1B@dtor_in_second_nvbase@@UAE@XZ"
    168 // CHECK:       (%"struct.dtor_in_second_nvbase::B"* %{{.*}})
    169 // CHECK:   ret void
    170 }
    171 
    172 void foo() {
    173   C c;
    174 }
    175 // DTORS2-LABEL: define linkonce_odr x86_thiscallcc i8* @"\01??_EC@dtor_in_second_nvbase@@W3AEPAXI@Z"
    176 // DTORS2:       (%"struct.dtor_in_second_nvbase::C"* %this, i32 %should_call_delete)
    177 //      Do an adjustment from B* to C*.
    178 // DTORS2:   getelementptr i8, i8* %{{.*}}, i32 -4
    179 // DTORS2:   bitcast i8* %{{.*}} to %"struct.dtor_in_second_nvbase::C"*
    180 // DTORS2:   %[[CALL:.*]] = tail call x86_thiscallcc i8* @"\01??_GC@dtor_in_second_nvbase@@UAEPAXI@Z"
    181 // DTORS2:   ret i8* %[[CALL]]
    182 
    183 }
    184 
    185 namespace test2 {
    186 // Just like dtor_in_second_nvbase, except put that in a vbase of a diamond.
    187 
    188 // C's dtor is in the non-primary base.
    189 struct A { virtual void f(); };
    190 struct B { virtual ~B(); };
    191 struct C : A, B { virtual ~C(); int c; };
    192 
    193 // Diamond hierarchy, with C as the shared vbase.
    194 struct D : virtual C { int d; };
    195 struct E : virtual C { int e; };
    196 struct F : D, E { ~F(); int f; };
    197 
    198 F::~F() {
    199 // CHECK-LABEL: define x86_thiscallcc void @"\01??1F@test2@@UAE@XZ"(%"struct.test2::F"*)
    200 //      Do an adjustment from C vbase subobject to F as though F was the
    201 //      complete type.
    202 // CHECK:   getelementptr inbounds i8, i8* %{{.*}}, i32 -20
    203 // CHECK:   bitcast i8* %{{.*}} to %"struct.test2::F"*
    204 // CHECK:   store %"struct.test2::F"*
    205 }
    206 
    207 void foo() {
    208   F f;
    209 }
    210 // DTORS3-LABEL: define linkonce_odr x86_thiscallcc void @"\01??_DF@test2@@UAE@XZ"({{.*}} {{.*}} comdat
    211 //      Do an adjustment from C* to F*.
    212 // DTORS3:   getelementptr i8, i8* %{{.*}}, i32 20
    213 // DTORS3:   bitcast i8* %{{.*}} to %"struct.test2::F"*
    214 // DTORS3:   call x86_thiscallcc void @"\01??1F@test2@@UAE@XZ"
    215 // DTORS3:   ret void
    216 
    217 }
    218 
    219 namespace constructors {
    220 
    221 struct A {
    222   A() {}
    223 };
    224 
    225 struct B : A {
    226   B();
    227   ~B();
    228 };
    229 
    230 B::B() {
    231   // CHECK: define x86_thiscallcc %"struct.constructors::B"* @"\01??0B@constructors@@QAE@XZ"(%"struct.constructors::B"* returned %this)
    232   // CHECK: call x86_thiscallcc %"struct.constructors::A"* @"\01??0A@constructors@@QAE@XZ"(%"struct.constructors::A"* %{{.*}})
    233   // CHECK: ret
    234 }
    235 
    236 struct C : virtual A {
    237   C();
    238 };
    239 
    240 C::C() {
    241   // CHECK: define x86_thiscallcc %"struct.constructors::C"* @"\01??0C@constructors@@QAE@XZ"(%"struct.constructors::C"* returned %this, i32 %is_most_derived)
    242   // TODO: make sure this works in the Release build too;
    243   // CHECK: store i32 %is_most_derived, i32* %[[IS_MOST_DERIVED_VAR:.*]], align 4
    244   // CHECK: %[[IS_MOST_DERIVED_VAL:.*]] = load i32, i32* %[[IS_MOST_DERIVED_VAR]]
    245   // CHECK: %[[SHOULD_CALL_VBASE_CTORS:.*]] = icmp ne i32 %[[IS_MOST_DERIVED_VAL]], 0
    246   // CHECK: br i1 %[[SHOULD_CALL_VBASE_CTORS]], label %[[INIT_VBASES:.*]], label %[[SKIP_VBASES:.*]]
    247   //
    248   // CHECK: [[INIT_VBASES]]
    249   // CHECK-NEXT: %[[this_i8:.*]] = bitcast %"struct.constructors::C"* %{{.*}} to i8*
    250   // CHECK-NEXT: %[[vbptr_off:.*]] = getelementptr inbounds i8, i8* %[[this_i8]], i32 0
    251   // CHECK-NEXT: %[[vbptr:.*]] = bitcast i8* %[[vbptr_off]] to i32**
    252   // CHECK-NEXT: store i32* getelementptr inbounds ([2 x i32], [2 x i32]* @"\01??_8C@constructors@@7B@", i32 0, i32 0), i32** %[[vbptr]]
    253   // CHECK-NEXT: bitcast %"struct.constructors::C"* %{{.*}} to i8*
    254   // CHECK-NEXT: getelementptr inbounds i8, i8* %{{.*}}, i32 4
    255   // CHECK-NEXT: bitcast i8* %{{.*}} to %"struct.constructors::A"*
    256   // CHECK-NEXT: call x86_thiscallcc %"struct.constructors::A"* @"\01??0A@constructors@@QAE@XZ"(%"struct.constructors::A"* %{{.*}})
    257   // CHECK-NEXT: br label %[[SKIP_VBASES]]
    258   //
    259   // CHECK: [[SKIP_VBASES]]
    260   // Class C does not define or override methods, so shouldn't change the vfptr.
    261   // CHECK-NOT: @"\01??_7C@constructors@@6B@"
    262   // CHECK: ret
    263 }
    264 
    265 void create_C() {
    266   C c;
    267   // CHECK: define void @"\01?create_C@constructors@@YAXXZ"()
    268   // CHECK: call x86_thiscallcc %"struct.constructors::C"* @"\01??0C@constructors@@QAE@XZ"(%"struct.constructors::C"* %c, i32 1)
    269   // CHECK: ret
    270 }
    271 
    272 struct D : C {
    273   D();
    274 };
    275 
    276 D::D() {
    277   // CHECK: define x86_thiscallcc %"struct.constructors::D"* @"\01??0D@constructors@@QAE@XZ"(%"struct.constructors::D"* returned %this, i32 %is_most_derived) unnamed_addr
    278   // CHECK: store i32 %is_most_derived, i32* %[[IS_MOST_DERIVED_VAR:.*]], align 4
    279   // CHECK: %[[IS_MOST_DERIVED_VAL:.*]] = load i32, i32* %[[IS_MOST_DERIVED_VAR]]
    280   // CHECK: %[[SHOULD_CALL_VBASE_CTORS:.*]] = icmp ne i32 %[[IS_MOST_DERIVED_VAL]], 0
    281   // CHECK: br i1 %[[SHOULD_CALL_VBASE_CTORS]], label %[[INIT_VBASES:.*]], label %[[SKIP_VBASES:.*]]
    282   //
    283   // CHECK: [[INIT_VBASES]]
    284   // CHECK-NEXT: %[[this_i8:.*]] = bitcast %"struct.constructors::D"* %{{.*}} to i8*
    285   // CHECK-NEXT: %[[vbptr_off:.*]] = getelementptr inbounds i8, i8* %[[this_i8]], i32 0
    286   // CHECK-NEXT: %[[vbptr:.*]] = bitcast i8* %[[vbptr_off]] to i32**
    287   // CHECK-NEXT: store i32* getelementptr inbounds ([2 x i32], [2 x i32]* @"\01??_8D@constructors@@7B@", i32 0, i32 0), i32** %[[vbptr]]
    288   // CHECK-NEXT: bitcast %"struct.constructors::D"* %{{.*}} to i8*
    289   // CHECK-NEXT: getelementptr inbounds i8, i8* %{{.*}}, i32 4
    290   // CHECK-NEXT: bitcast i8* %{{.*}} to %"struct.constructors::A"*
    291   // CHECK-NEXT: call x86_thiscallcc %"struct.constructors::A"* @"\01??0A@constructors@@QAE@XZ"(%"struct.constructors::A"* %{{.*}})
    292   // CHECK-NEXT: br label %[[SKIP_VBASES]]
    293   //
    294   // CHECK: [[SKIP_VBASES]]
    295   // CHECK: call x86_thiscallcc %"struct.constructors::C"* @"\01??0C@constructors@@QAE@XZ"(%"struct.constructors::C"* %{{.*}}, i32 0)
    296   // CHECK: ret
    297 }
    298 
    299 struct E : virtual C {
    300   E();
    301 };
    302 
    303 E::E() {
    304   // CHECK: define x86_thiscallcc %"struct.constructors::E"* @"\01??0E@constructors@@QAE@XZ"(%"struct.constructors::E"* returned %this, i32 %is_most_derived) unnamed_addr
    305   // CHECK: store i32 %is_most_derived, i32* %[[IS_MOST_DERIVED_VAR:.*]], align 4
    306   // CHECK: %[[IS_MOST_DERIVED_VAL:.*]] = load i32, i32* %[[IS_MOST_DERIVED_VAR]]
    307   // CHECK: %[[SHOULD_CALL_VBASE_CTORS:.*]] = icmp ne i32 %[[IS_MOST_DERIVED_VAL]], 0
    308   // CHECK: br i1 %[[SHOULD_CALL_VBASE_CTORS]], label %[[INIT_VBASES:.*]], label %[[SKIP_VBASES:.*]]
    309   //
    310   // CHECK: [[INIT_VBASES]]
    311   // CHECK-NEXT: %[[this_i8:.*]] = bitcast %"struct.constructors::E"* %{{.*}} to i8*
    312   // CHECK-NEXT: %[[offs:.*]] = getelementptr inbounds i8, i8* %[[this_i8]], i32 0
    313   // CHECK-NEXT: %[[vbptr_E:.*]] = bitcast i8* %[[offs]] to i32**
    314   // CHECK-NEXT: store i32* getelementptr inbounds ([3 x i32], [3 x i32]* @"\01??_8E@constructors@@7B01@@", i32 0, i32 0), i32** %[[vbptr_E]]
    315   // CHECK-NEXT: %[[offs:.*]] = getelementptr inbounds i8, i8* %[[this_i8]], i32 4
    316   // CHECK-NEXT: %[[vbptr_C:.*]] = bitcast i8* %[[offs]] to i32**
    317   // CHECK-NEXT: store i32* getelementptr inbounds ([2 x i32], [2 x i32]* @"\01??_8E@constructors@@7BC@1@@", i32 0, i32 0), i32** %[[vbptr_C]]
    318   // CHECK-NEXT: bitcast %"struct.constructors::E"* %{{.*}} to i8*
    319   // CHECK-NEXT: getelementptr inbounds i8, i8* %{{.*}}, i32 4
    320   // CHECK-NEXT: bitcast i8* %{{.*}} to %"struct.constructors::A"*
    321   // CHECK-NEXT: call x86_thiscallcc %"struct.constructors::A"* @"\01??0A@constructors@@QAE@XZ"(%"struct.constructors::A"* %{{.*}})
    322   // CHECK: call x86_thiscallcc %"struct.constructors::C"* @"\01??0C@constructors@@QAE@XZ"(%"struct.constructors::C"* %{{.*}}, i32 0)
    323   // CHECK-NEXT: br label %[[SKIP_VBASES]]
    324   //
    325   // CHECK: [[SKIP_VBASES]]
    326   // CHECK: ret
    327 }
    328 
    329 // PR16735 - even abstract classes should have a constructor emitted.
    330 struct F {
    331   F();
    332   virtual void f() = 0;
    333 };
    334 
    335 F::F() {}
    336 // CHECK: define x86_thiscallcc %"struct.constructors::F"* @"\01??0F@constructors@@QAE@XZ"
    337 
    338 } // end namespace constructors
    339 
    340 namespace dtors {
    341 
    342 struct A {
    343   ~A();
    344 };
    345 
    346 void call_nv_complete(A *a) {
    347   a->~A();
    348 // CHECK: define void @"\01?call_nv_complete@dtors@@YAXPAUA@1@@Z"
    349 // CHECK: call x86_thiscallcc void @"\01??1A@dtors@@QAE@XZ"
    350 // CHECK: ret
    351 }
    352 
    353 // CHECK: declare x86_thiscallcc void @"\01??1A@dtors@@QAE@XZ"
    354 
    355 // Now try some virtual bases, where we need the complete dtor.
    356 
    357 struct B : virtual A { ~B(); };
    358 struct C : virtual A { ~C(); };
    359 struct D : B, C { ~D(); };
    360 
    361 void call_vbase_complete(D *d) {
    362   d->~D();
    363 // CHECK: define void @"\01?call_vbase_complete@dtors@@YAXPAUD@1@@Z"
    364 // CHECK: call x86_thiscallcc void @"\01??_DD@dtors@@QAE@XZ"(%"struct.dtors::D"* %{{[^,]+}})
    365 // CHECK: ret
    366 }
    367 
    368 // The complete dtor should call the base dtors for D and the vbase A (once).
    369 // CHECK: define linkonce_odr x86_thiscallcc void @"\01??_DD@dtors@@QAE@XZ"({{.*}}) {{.*}} comdat
    370 // CHECK-NOT: call
    371 // CHECK: call x86_thiscallcc void @"\01??1D@dtors@@QAE@XZ"
    372 // CHECK-NOT: call
    373 // CHECK: call x86_thiscallcc void @"\01??1A@dtors@@QAE@XZ"
    374 // CHECK-NOT: call
    375 // CHECK: ret
    376 
    377 void destroy_d_complete() {
    378   D d;
    379 // CHECK: define void @"\01?destroy_d_complete@dtors@@YAXXZ"
    380 // CHECK: call x86_thiscallcc void @"\01??_DD@dtors@@QAE@XZ"(%"struct.dtors::D"* %{{[^,]+}})
    381 // CHECK: ret
    382 }
    383 
    384 // FIXME: Clang manually inlines the deletion, so we don't get a call to the
    385 // deleting dtor (_G).  The only way to call deleting dtors currently is through
    386 // a vftable.
    387 void call_nv_deleting_dtor(D *d) {
    388   delete d;
    389 // CHECK: define void @"\01?call_nv_deleting_dtor@dtors@@YAXPAUD@1@@Z"
    390 // CHECK: call x86_thiscallcc void @"\01??_DD@dtors@@QAE@XZ"(%"struct.dtors::D"* %{{[^,]+}})
    391 // CHECK: call void @"\01??3@YAXPAX@Z"
    392 // CHECK: ret
    393 }
    394 
    395 }
    396 
    397 namespace test1 {
    398 struct A { };
    399 struct B : virtual A {
    400   B(int *a);
    401   B(const char *a, ...);
    402   __cdecl B(short *a);
    403 };
    404 B::B(int *a) {}
    405 B::B(const char *a, ...) {}
    406 B::B(short *a) {}
    407 // CHECK: define x86_thiscallcc %"struct.test1::B"* @"\01??0B@test1@@QAE@PAH@Z"
    408 // CHECK:               (%"struct.test1::B"* returned %this, i32* %a, i32 %is_most_derived)
    409 // CHECK: define %"struct.test1::B"* @"\01??0B@test1@@QAA@PBDZZ"
    410 // CHECK:               (%"struct.test1::B"* returned %this, i32 %is_most_derived, i8* %a, ...)
    411 // CHECK: define x86_thiscallcc %"struct.test1::B"* @"\01??0B@test1@@QAE@PAF@Z"
    412 // CHECK:               (%"struct.test1::B"* returned %this, i16* %a, i32 %is_most_derived)
    413 
    414 void construct_b() {
    415   int a;
    416   B b1(&a);
    417   B b2("%d %d", 1, 2);
    418 }
    419 // CHECK-LABEL: define void @"\01?construct_b@test1@@YAXXZ"()
    420 // CHECK: call x86_thiscallcc %"struct.test1::B"* @"\01??0B@test1@@QAE@PAH@Z"
    421 // CHECK:               (%"struct.test1::B"* {{.*}}, i32* {{.*}}, i32 1)
    422 // CHECK: call %"struct.test1::B"* (%"struct.test1::B"*, i32, i8*, ...) @"\01??0B@test1@@QAA@PBDZZ"
    423 // CHECK:               (%"struct.test1::B"* {{.*}}, i32 1, i8* {{.*}}, i32 1, i32 2)
    424 }
    425 
    426 namespace implicit_copy_vtable {
    427 // This was a crash that only reproduced in ABIs without key functions.
    428 struct ImplicitCopy {
    429   // implicit copy ctor
    430   virtual ~ImplicitCopy();
    431 };
    432 void CreateCopy(ImplicitCopy *a) {
    433   new ImplicitCopy(*a);
    434 }
    435 // CHECK: store {{.*}} @"\01??_7ImplicitCopy@implicit_copy_vtable@@6B@"
    436 
    437 struct MoveOnly {
    438   MoveOnly(MoveOnly &&o) = default;
    439   virtual ~MoveOnly();
    440 };
    441 MoveOnly &&f();
    442 void g() { new MoveOnly(f()); }
    443 // CHECK: store {{.*}} @"\01??_7MoveOnly@implicit_copy_vtable@@6B@"
    444 }
    445 
    446 namespace delegating_ctor {
    447 struct Y {};
    448 struct X : virtual Y {
    449   X(int);
    450   X();
    451 };
    452 X::X(int) : X() {}
    453 }
    454 // CHECK: define x86_thiscallcc %"struct.delegating_ctor::X"* @"\01??0X@delegating_ctor@@QAE@H@Z"(
    455 // CHECK:  %[[is_most_derived_addr:.*]] = alloca i32, align 4
    456 // CHECK:  store i32 %is_most_derived, i32* %[[is_most_derived_addr]]
    457 // CHECK:  %[[is_most_derived:.*]] = load i32, i32* %[[is_most_derived_addr]]
    458 // CHECK:  call x86_thiscallcc {{.*}}* @"\01??0X@delegating_ctor@@QAE@XZ"({{.*}} i32 %[[is_most_derived]])
    459 
    460 // Dtor thunks for classes in anonymous namespaces should be internal, not
    461 // linkonce_odr.
    462 namespace {
    463 struct A {
    464   virtual ~A() { }
    465 };
    466 }
    467 void *getA() {
    468   return (void*)new A();
    469 }
    470 // CHECK: define internal x86_thiscallcc i8* @"\01??_GA@?A@@UAEPAXI@Z"
    471 // CHECK:               (%"struct.(anonymous namespace)::A"* %this, i32 %should_call_delete)
    472 // CHECK: define internal x86_thiscallcc void @"\01??1A@?A@@UAE@XZ"
    473 // CHECK:               (%"struct.(anonymous namespace)::A"* %this)
    474 
    475 // Check that we correctly transform __stdcall to __thiscall for ctors and
    476 // dtors.
    477 class G {
    478  public:
    479   __stdcall G() {};
    480 // DTORS4: define linkonce_odr x86_thiscallcc %class.G* @"\01??0G@@QAE@XZ"
    481   __stdcall ~G() {};
    482 // DTORS4: define linkonce_odr x86_thiscallcc void @"\01??1G@@QAE@XZ"
    483 };
    484 
    485 extern void testG() {
    486   G g;
    487 }
    488