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llvm-project/clang/test/CodeGenCXX/microsoft-abi-structors.cpp
Reid Kleckner df8dd61f23 [MS] Mangle a hash of the main file path into anonymous namespaces 
Summary:
This is needed to avoid conflicts in mangled names for codeview types in
anonymous namespaces. In CodeView, types refer to each other typically
through forward declarations, which contain mangled names. These names
have to be unique, otherwise the debugger will look up the mangled name
and find the wrong definition.

Furthermore, ThinLTO will deduplicate the types, and debug info
verification can fail when the types have the wrong sizes. This is
PR38608.

Fixes PR38609.

Reviewers: majnemer, inglorion, hans

Subscribers: mehdi_amini, aprantl, JDevlieghere, dexonsmith, cfe-commits

Differential Revision: https://reviews.llvm.org/D50877

llvm-svn: 340079
2018-08-17 20:59:27 +00:00

488 lines
19 KiB
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// RUN: %clang_cc1 -emit-llvm -fno-rtti %s -std=c++11 -o - -mconstructor-aliases -triple=i386-pc-win32 -fno-rtti > %t
// RUN: FileCheck %s < %t
// vftables are emitted very late, so do another pass to try to keep the checks
// in source order.
// RUN: FileCheck --check-prefix DTORS %s < %t
// RUN: FileCheck --check-prefix DTORS2 %s < %t
// RUN: FileCheck --check-prefix DTORS3 %s < %t
// RUN: FileCheck --check-prefix DTORS4 %s < %t
//
// 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
namespace basic {
class A {
public:
A() { }
~A();
};
void no_constructor_destructor_infinite_recursion() {
A a;
// CHECK: define linkonce_odr dso_local x86_thiscallcc %"class.basic::A"* @"??0A@basic@@QAE@XZ"(%"class.basic::A"* returned %this) {{.*}} comdat {{.*}} {
// CHECK: [[THIS_ADDR:%[.0-9A-Z_a-z]+]] = alloca %"class.basic::A"*, align 4
// CHECK-NEXT: store %"class.basic::A"* %this, %"class.basic::A"** [[THIS_ADDR]], align 4
// CHECK-NEXT: [[T1:%[.0-9A-Z_a-z]+]] = load %"class.basic::A"*, %"class.basic::A"** [[THIS_ADDR]]
// CHECK-NEXT: ret %"class.basic::A"* [[T1]]
// CHECK-NEXT: }
}
A::~A() {
// Make sure that the destructor doesn't call itself:
// CHECK: define {{.*}} @"??1A@basic@@QAE@XZ"
// CHECK-NOT: call void @"??1A@basic@@QAE@XZ"
// CHECK: ret
}
struct B {
B();
};
// Tests that we can define constructors outside the class (PR12784).
B::B() {
// CHECK: define dso_local x86_thiscallcc %"struct.basic::B"* @"??0B@basic@@QAE@XZ"(%"struct.basic::B"* returned %this)
// CHECK: ret
}
struct C {
virtual ~C() {
// DTORS: define linkonce_odr dso_local x86_thiscallcc i8* @"??_GC@basic@@UAEPAXI@Z"(%"struct.basic::C"* %this, i32 %should_call_delete) {{.*}} comdat {{.*}} {
// DTORS: store i32 %should_call_delete, i32* %[[SHOULD_DELETE_VAR:[0-9a-z._]+]], align 4
// DTORS: store i8* %{{.*}}, i8** %[[RETVAL:[0-9a-z._]+]]
// DTORS: %[[SHOULD_DELETE_VALUE:[0-9a-z._]+]] = load i32, i32* %[[SHOULD_DELETE_VAR]]
// DTORS: call x86_thiscallcc void @"??1C@basic@@UAE@XZ"(%"struct.basic::C"* %[[THIS:[0-9a-z]+]])
// DTORS-NEXT: %[[CONDITION:[0-9]+]] = icmp eq i32 %[[SHOULD_DELETE_VALUE]], 0
// DTORS-NEXT: br i1 %[[CONDITION]], label %[[CONTINUE_LABEL:[0-9a-z._]+]], label %[[CALL_DELETE_LABEL:[0-9a-z._]+]]
//
// DTORS: [[CALL_DELETE_LABEL]]
// DTORS-NEXT: %[[THIS_AS_VOID:[0-9a-z]+]] = bitcast %"struct.basic::C"* %[[THIS]] to i8*
// DTORS-NEXT: call void @"??3@YAXPAX@Z"(i8* %[[THIS_AS_VOID]])
// DTORS-NEXT: br label %[[CONTINUE_LABEL]]
//
// DTORS: [[CONTINUE_LABEL]]
// DTORS-NEXT: %[[RET:.*]] = load i8*, i8** %[[RETVAL]]
// DTORS-NEXT: ret i8* %[[RET]]
// Check that we do the mangling correctly on x64.
// DTORS-X64: @"??_GC@basic@@UEAAPEAXI@Z"
}
virtual void foo();
};
// Emits the vftable in the output.
void C::foo() {}
void check_vftable_offset() {
C c;
// The vftable pointer should point at the beginning of the vftable.
// CHECK: [[THIS_PTR:%[0-9]+]] = bitcast %"struct.basic::C"* {{.*}} to i32 (...)***
// CHECK: store i32 (...)** bitcast ({ [2 x i8*] }* @"??_7C@basic@@6B@" to i32 (...)**), i32 (...)*** [[THIS_PTR]]
}
void call_complete_dtor(C *obj_ptr) {
// CHECK: define dso_local void @"?call_complete_dtor@basic@@YAXPAUC@1@@Z"(%"struct.basic::C"* %obj_ptr)
obj_ptr->~C();
// CHECK: %[[OBJ_PTR_VALUE:.*]] = load %"struct.basic::C"*, %"struct.basic::C"** %{{.*}}, align 4
// CHECK-NEXT: %[[PVTABLE:.*]] = bitcast %"struct.basic::C"* %[[OBJ_PTR_VALUE]] to i8* (%"struct.basic::C"*, i32)***
// CHECK-NEXT: %[[VTABLE:.*]] = load i8* (%"struct.basic::C"*, i32)**, i8* (%"struct.basic::C"*, i32)*** %[[PVTABLE]]
// CHECK-NEXT: %[[PVDTOR:.*]] = getelementptr inbounds i8* (%"struct.basic::C"*, i32)*, i8* (%"struct.basic::C"*, i32)** %[[VTABLE]], i64 0
// CHECK-NEXT: %[[VDTOR:.*]] = load i8* (%"struct.basic::C"*, i32)*, i8* (%"struct.basic::C"*, i32)** %[[PVDTOR]]
// CHECK-NEXT: call x86_thiscallcc i8* %[[VDTOR]](%"struct.basic::C"* %[[OBJ_PTR_VALUE]], i32 0)
// CHECK-NEXT: ret void
}
void call_deleting_dtor(C *obj_ptr) {
// CHECK: define dso_local void @"?call_deleting_dtor@basic@@YAXPAUC@1@@Z"(%"struct.basic::C"* %obj_ptr)
delete obj_ptr;
// CHECK: %[[OBJ_PTR_VALUE:.*]] = load %"struct.basic::C"*, %"struct.basic::C"** %{{.*}}, align 4
// CHECK: br i1 {{.*}}, label %[[DELETE_NULL:.*]], label %[[DELETE_NOTNULL:.*]]
// CHECK: [[DELETE_NOTNULL]]
// CHECK-NEXT: %[[PVTABLE:.*]] = bitcast %"struct.basic::C"* %[[OBJ_PTR_VALUE]] to i8* (%"struct.basic::C"*, i32)***
// CHECK-NEXT: %[[VTABLE:.*]] = load i8* (%"struct.basic::C"*, i32)**, i8* (%"struct.basic::C"*, i32)*** %[[PVTABLE]]
// CHECK-NEXT: %[[PVDTOR:.*]] = getelementptr inbounds i8* (%"struct.basic::C"*, i32)*, i8* (%"struct.basic::C"*, i32)** %[[VTABLE]], i64 0
// CHECK-NEXT: %[[VDTOR:.*]] = load i8* (%"struct.basic::C"*, i32)*, i8* (%"struct.basic::C"*, i32)** %[[PVDTOR]]
// CHECK-NEXT: call x86_thiscallcc i8* %[[VDTOR]](%"struct.basic::C"* %[[OBJ_PTR_VALUE]], i32 1)
// CHECK: ret void
}
void call_deleting_dtor_and_global_delete(C *obj_ptr) {
// CHECK: define dso_local void @"?call_deleting_dtor_and_global_delete@basic@@YAXPAUC@1@@Z"(%"struct.basic::C"* %obj_ptr)
::delete obj_ptr;
// CHECK: %[[OBJ_PTR_VALUE:.*]] = load %"struct.basic::C"*, %"struct.basic::C"** %{{.*}}, align 4
// CHECK: br i1 {{.*}}, label %[[DELETE_NULL:.*]], label %[[DELETE_NOTNULL:.*]]
// CHECK: [[DELETE_NOTNULL]]
// CHECK-NEXT: %[[PVTABLE:.*]] = bitcast %"struct.basic::C"* %[[OBJ_PTR_VALUE]] to i8* (%"struct.basic::C"*, i32)***
// CHECK-NEXT: %[[VTABLE:.*]] = load i8* (%"struct.basic::C"*, i32)**, i8* (%"struct.basic::C"*, i32)*** %[[PVTABLE]]
// CHECK-NEXT: %[[PVDTOR:.*]] = getelementptr inbounds i8* (%"struct.basic::C"*, i32)*, i8* (%"struct.basic::C"*, i32)** %[[VTABLE]], i64 0
// CHECK-NEXT: %[[VDTOR:.*]] = load i8* (%"struct.basic::C"*, i32)*, i8* (%"struct.basic::C"*, i32)** %[[PVDTOR]]
// CHECK-NEXT: %[[CALL:.*]] = call x86_thiscallcc i8* %[[VDTOR]](%"struct.basic::C"* %[[OBJ_PTR_VALUE]], i32 0)
// CHECK-NEXT: call void @"??3@YAXPAX@Z"(i8* %[[CALL]])
// CHECK: ret void
}
struct D {
static int foo();
D() {
static int ctor_static = foo();
// CHECK that the static in the ctor gets mangled correctly:
// CHECK: @"?ctor_static@?1???0D@basic@@QAE@XZ@4HA"
}
~D() {
static int dtor_static = foo();
// CHECK that the static in the dtor gets mangled correctly:
// CHECK: @"?dtor_static@?1???1D@basic@@QAE@XZ@4HA"
}
};
void use_D() { D c; }
} // end namespace basic
namespace dtor_in_second_nvbase {
struct A {
virtual void f(); // A needs vftable to be primary.
};
struct B {
virtual ~B();
};
struct C : A, B {
virtual ~C();
};
C::~C() {
// CHECK-LABEL: define dso_local x86_thiscallcc void @"??1C@dtor_in_second_nvbase@@UAE@XZ"
// CHECK: (%"struct.dtor_in_second_nvbase::C"* %this)
// No this adjustment!
// CHECK-NOT: getelementptr
// CHECK: load %"struct.dtor_in_second_nvbase::C"*, %"struct.dtor_in_second_nvbase::C"** %{{.*}}
// Now we this-adjust before calling ~B.
// CHECK: bitcast %"struct.dtor_in_second_nvbase::C"* %{{.*}} to i8*
// CHECK: getelementptr inbounds i8, i8* %{{.*}}, i32 4
// CHECK: bitcast i8* %{{.*}} to %"struct.dtor_in_second_nvbase::B"*
// CHECK: call x86_thiscallcc void @"??1B@dtor_in_second_nvbase@@UAE@XZ"
// CHECK: (%"struct.dtor_in_second_nvbase::B"* %{{.*}})
// CHECK: ret void
}
void foo() {
C c;
}
// DTORS2-LABEL: define linkonce_odr dso_local x86_thiscallcc i8* @"??_EC@dtor_in_second_nvbase@@W3AEPAXI@Z"
// DTORS2: (%"struct.dtor_in_second_nvbase::C"* %this, i32 %should_call_delete)
// Do an adjustment from B* to C*.
// DTORS2: getelementptr i8, i8* %{{.*}}, i32 -4
// DTORS2: bitcast i8* %{{.*}} to %"struct.dtor_in_second_nvbase::C"*
// DTORS2: %[[CALL:.*]] = tail call x86_thiscallcc i8* @"??_GC@dtor_in_second_nvbase@@UAEPAXI@Z"
// DTORS2: ret i8* %[[CALL]]
}
namespace test2 {
// Just like dtor_in_second_nvbase, except put that in a vbase of a diamond.
// C's dtor is in the non-primary base.
struct A { virtual void f(); };
struct B { virtual ~B(); };
struct C : A, B { virtual ~C(); int c; };
// Diamond hierarchy, with C as the shared vbase.
struct D : virtual C { int d; };
struct E : virtual C { int e; };
struct F : D, E { ~F(); int f; };
F::~F() {
// CHECK-LABEL: define dso_local x86_thiscallcc void @"??1F@test2@@UAE@XZ"(%"struct.test2::F"*{{[^,]*}})
// Do an adjustment from C vbase subobject to F as though F was the
// complete type.
// CHECK: getelementptr inbounds i8, i8* %{{.*}}, i32 -20
// CHECK: bitcast i8* %{{.*}} to %"struct.test2::F"*
// CHECK: store %"struct.test2::F"*
}
void foo() {
F f;
}
// DTORS3-LABEL: define linkonce_odr dso_local x86_thiscallcc void @"??_DF@test2@@QAEXXZ"({{.*}} {{.*}} comdat
// Do an adjustment from C* to F*.
// DTORS3: getelementptr i8, i8* %{{.*}}, i32 20
// DTORS3: bitcast i8* %{{.*}} to %"struct.test2::F"*
// DTORS3: call x86_thiscallcc void @"??1F@test2@@UAE@XZ"
// DTORS3: ret void
}
namespace constructors {
struct A {
A() {}
};
struct B : A {
B();
~B();
};
B::B() {
// CHECK: define dso_local x86_thiscallcc %"struct.constructors::B"* @"??0B@constructors@@QAE@XZ"(%"struct.constructors::B"* returned %this)
// CHECK: call x86_thiscallcc %"struct.constructors::A"* @"??0A@constructors@@QAE@XZ"(%"struct.constructors::A"* %{{.*}})
// CHECK: ret
}
struct C : virtual A {
C();
};
C::C() {
// CHECK: define dso_local x86_thiscallcc %"struct.constructors::C"* @"??0C@constructors@@QAE@XZ"(%"struct.constructors::C"* returned %this, i32 %is_most_derived)
// TODO: make sure this works in the Release build too;
// CHECK: store i32 %is_most_derived, i32* %[[IS_MOST_DERIVED_VAR:.*]], align 4
// CHECK: %[[IS_MOST_DERIVED_VAL:.*]] = load i32, i32* %[[IS_MOST_DERIVED_VAR]]
// CHECK: %[[SHOULD_CALL_VBASE_CTORS:.*]] = icmp ne i32 %[[IS_MOST_DERIVED_VAL]], 0
// CHECK: br i1 %[[SHOULD_CALL_VBASE_CTORS]], label %[[INIT_VBASES:.*]], label %[[SKIP_VBASES:.*]]
//
// CHECK: [[INIT_VBASES]]
// CHECK-NEXT: %[[this_i8:.*]] = bitcast %"struct.constructors::C"* %{{.*}} to i8*
// CHECK-NEXT: %[[vbptr_off:.*]] = getelementptr inbounds i8, i8* %[[this_i8]], i32 0
// CHECK-NEXT: %[[vbptr:.*]] = bitcast i8* %[[vbptr_off]] to i32**
// CHECK-NEXT: store i32* getelementptr inbounds ([2 x i32], [2 x i32]* @"??_8C@constructors@@7B@", i32 0, i32 0), i32** %[[vbptr]]
// CHECK-NEXT: bitcast %"struct.constructors::C"* %{{.*}} to i8*
// CHECK-NEXT: getelementptr inbounds i8, i8* %{{.*}}, i32 4
// CHECK-NEXT: bitcast i8* %{{.*}} to %"struct.constructors::A"*
// CHECK-NEXT: call x86_thiscallcc %"struct.constructors::A"* @"??0A@constructors@@QAE@XZ"(%"struct.constructors::A"* %{{.*}})
// CHECK-NEXT: br label %[[SKIP_VBASES]]
//
// CHECK: [[SKIP_VBASES]]
// Class C does not define or override methods, so shouldn't change the vfptr.
// CHECK-NOT: @"??_7C@constructors@@6B@"
// CHECK: ret
}
void create_C() {
C c;
// CHECK: define dso_local void @"?create_C@constructors@@YAXXZ"()
// CHECK: call x86_thiscallcc %"struct.constructors::C"* @"??0C@constructors@@QAE@XZ"(%"struct.constructors::C"* %c, i32 1)
// CHECK: ret
}
struct D : C {
D();
};
D::D() {
// CHECK: define dso_local x86_thiscallcc %"struct.constructors::D"* @"??0D@constructors@@QAE@XZ"(%"struct.constructors::D"* returned %this, i32 %is_most_derived) unnamed_addr
// CHECK: store i32 %is_most_derived, i32* %[[IS_MOST_DERIVED_VAR:.*]], align 4
// CHECK: %[[IS_MOST_DERIVED_VAL:.*]] = load i32, i32* %[[IS_MOST_DERIVED_VAR]]
// CHECK: %[[SHOULD_CALL_VBASE_CTORS:.*]] = icmp ne i32 %[[IS_MOST_DERIVED_VAL]], 0
// CHECK: br i1 %[[SHOULD_CALL_VBASE_CTORS]], label %[[INIT_VBASES:.*]], label %[[SKIP_VBASES:.*]]
//
// CHECK: [[INIT_VBASES]]
// CHECK-NEXT: %[[this_i8:.*]] = bitcast %"struct.constructors::D"* %{{.*}} to i8*
// CHECK-NEXT: %[[vbptr_off:.*]] = getelementptr inbounds i8, i8* %[[this_i8]], i32 0
// CHECK-NEXT: %[[vbptr:.*]] = bitcast i8* %[[vbptr_off]] to i32**
// CHECK-NEXT: store i32* getelementptr inbounds ([2 x i32], [2 x i32]* @"??_8D@constructors@@7B@", i32 0, i32 0), i32** %[[vbptr]]
// CHECK-NEXT: bitcast %"struct.constructors::D"* %{{.*}} to i8*
// CHECK-NEXT: getelementptr inbounds i8, i8* %{{.*}}, i32 4
// CHECK-NEXT: bitcast i8* %{{.*}} to %"struct.constructors::A"*
// CHECK-NEXT: call x86_thiscallcc %"struct.constructors::A"* @"??0A@constructors@@QAE@XZ"(%"struct.constructors::A"* %{{.*}})
// CHECK-NEXT: br label %[[SKIP_VBASES]]
//
// CHECK: [[SKIP_VBASES]]
// CHECK: call x86_thiscallcc %"struct.constructors::C"* @"??0C@constructors@@QAE@XZ"(%"struct.constructors::C"* %{{.*}}, i32 0)
// CHECK: ret
}
struct E : virtual C {
E();
};
E::E() {
// CHECK: define dso_local x86_thiscallcc %"struct.constructors::E"* @"??0E@constructors@@QAE@XZ"(%"struct.constructors::E"* returned %this, i32 %is_most_derived) unnamed_addr
// CHECK: store i32 %is_most_derived, i32* %[[IS_MOST_DERIVED_VAR:.*]], align 4
// CHECK: %[[IS_MOST_DERIVED_VAL:.*]] = load i32, i32* %[[IS_MOST_DERIVED_VAR]]
// CHECK: %[[SHOULD_CALL_VBASE_CTORS:.*]] = icmp ne i32 %[[IS_MOST_DERIVED_VAL]], 0
// CHECK: br i1 %[[SHOULD_CALL_VBASE_CTORS]], label %[[INIT_VBASES:.*]], label %[[SKIP_VBASES:.*]]
//
// CHECK: [[INIT_VBASES]]
// CHECK-NEXT: %[[this_i8:.*]] = bitcast %"struct.constructors::E"* %{{.*}} to i8*
// CHECK-NEXT: %[[offs:.*]] = getelementptr inbounds i8, i8* %[[this_i8]], i32 0
// CHECK-NEXT: %[[vbptr_E:.*]] = bitcast i8* %[[offs]] to i32**
// CHECK-NEXT: store i32* getelementptr inbounds ([3 x i32], [3 x i32]* @"??_8E@constructors@@7B01@@", i32 0, i32 0), i32** %[[vbptr_E]]
// CHECK-NEXT: %[[offs:.*]] = getelementptr inbounds i8, i8* %[[this_i8]], i32 4
// CHECK-NEXT: %[[vbptr_C:.*]] = bitcast i8* %[[offs]] to i32**
// CHECK-NEXT: store i32* getelementptr inbounds ([2 x i32], [2 x i32]* @"??_8E@constructors@@7BC@1@@", i32 0, i32 0), i32** %[[vbptr_C]]
// CHECK-NEXT: bitcast %"struct.constructors::E"* %{{.*}} to i8*
// CHECK-NEXT: getelementptr inbounds i8, i8* %{{.*}}, i32 4
// CHECK-NEXT: bitcast i8* %{{.*}} to %"struct.constructors::A"*
// CHECK-NEXT: call x86_thiscallcc %"struct.constructors::A"* @"??0A@constructors@@QAE@XZ"(%"struct.constructors::A"* %{{.*}})
// CHECK: call x86_thiscallcc %"struct.constructors::C"* @"??0C@constructors@@QAE@XZ"(%"struct.constructors::C"* %{{.*}}, i32 0)
// CHECK-NEXT: br label %[[SKIP_VBASES]]
//
// CHECK: [[SKIP_VBASES]]
// CHECK: ret
}
// PR16735 - even abstract classes should have a constructor emitted.
struct F {
F();
virtual void f() = 0;
};
F::F() {}
// CHECK: define dso_local x86_thiscallcc %"struct.constructors::F"* @"??0F@constructors@@QAE@XZ"
} // end namespace constructors
namespace dtors {
struct A {
~A();
};
void call_nv_complete(A *a) {
a->~A();
// CHECK: define dso_local void @"?call_nv_complete@dtors@@YAXPAUA@1@@Z"
// CHECK: call x86_thiscallcc void @"??1A@dtors@@QAE@XZ"
// CHECK: ret
}
// CHECK: declare dso_local x86_thiscallcc void @"??1A@dtors@@QAE@XZ"
// Now try some virtual bases, where we need the complete dtor.
struct B : virtual A { ~B(); };
struct C : virtual A { ~C(); };
struct D : B, C { ~D(); };
void call_vbase_complete(D *d) {
d->~D();
// CHECK: define dso_local void @"?call_vbase_complete@dtors@@YAXPAUD@1@@Z"
// CHECK: call x86_thiscallcc void @"??_DD@dtors@@QAEXXZ"(%"struct.dtors::D"* %{{[^,]+}})
// CHECK: ret
}
// The complete dtor should call the base dtors for D and the vbase A (once).
// CHECK: define linkonce_odr dso_local x86_thiscallcc void @"??_DD@dtors@@QAEXXZ"({{.*}}) {{.*}} comdat
// CHECK-NOT: call
// CHECK: call x86_thiscallcc void @"??1D@dtors@@QAE@XZ"
// CHECK-NOT: call
// CHECK: call x86_thiscallcc void @"??1A@dtors@@QAE@XZ"
// CHECK-NOT: call
// CHECK: ret
void destroy_d_complete() {
D d;
// CHECK: define dso_local void @"?destroy_d_complete@dtors@@YAXXZ"
// CHECK: call x86_thiscallcc void @"??_DD@dtors@@QAEXXZ"(%"struct.dtors::D"* %{{[^,]+}})
// CHECK: ret
}
// FIXME: Clang manually inlines the deletion, so we don't get a call to the
// deleting dtor (_G). The only way to call deleting dtors currently is through
// a vftable.
void call_nv_deleting_dtor(D *d) {
delete d;
// CHECK: define dso_local void @"?call_nv_deleting_dtor@dtors@@YAXPAUD@1@@Z"
// CHECK: call x86_thiscallcc void @"??_DD@dtors@@QAEXXZ"(%"struct.dtors::D"* %{{[^,]+}})
// CHECK: call void @"??3@YAXPAX@Z"
// CHECK: ret
}
}
namespace test1 {
struct A { };
struct B : virtual A {
B(int *a);
B(const char *a, ...);
__cdecl B(short *a);
};
B::B(int *a) {}
B::B(const char *a, ...) {}
B::B(short *a) {}
// CHECK: define dso_local x86_thiscallcc %"struct.test1::B"* @"??0B@test1@@QAE@PAH@Z"
// CHECK: (%"struct.test1::B"* returned %this, i32* %a, i32 %is_most_derived)
// CHECK: define dso_local %"struct.test1::B"* @"??0B@test1@@QAA@PBDZZ"
// CHECK: (%"struct.test1::B"* returned %this, i32 %is_most_derived, i8* %a, ...)
// CHECK: define dso_local x86_thiscallcc %"struct.test1::B"* @"??0B@test1@@QAE@PAF@Z"
// CHECK: (%"struct.test1::B"* returned %this, i16* %a, i32 %is_most_derived)
void construct_b() {
int a;
B b1(&a);
B b2("%d %d", 1, 2);
}
// CHECK-LABEL: define dso_local void @"?construct_b@test1@@YAXXZ"()
// CHECK: call x86_thiscallcc %"struct.test1::B"* @"??0B@test1@@QAE@PAH@Z"
// CHECK: (%"struct.test1::B"* {{.*}}, i32* {{.*}}, i32 1)
// CHECK: call %"struct.test1::B"* (%"struct.test1::B"*, i32, i8*, ...) @"??0B@test1@@QAA@PBDZZ"
// CHECK: (%"struct.test1::B"* {{.*}}, i32 1, i8* {{.*}}, i32 1, i32 2)
}
namespace implicit_copy_vtable {
// This was a crash that only reproduced in ABIs without key functions.
struct ImplicitCopy {
// implicit copy ctor
virtual ~ImplicitCopy();
};
void CreateCopy(ImplicitCopy *a) {
new ImplicitCopy(*a);
}
// CHECK: store {{.*}} @"??_7ImplicitCopy@implicit_copy_vtable@@6B@"
struct MoveOnly {
MoveOnly(MoveOnly &&o) = default;
virtual ~MoveOnly();
};
MoveOnly &&f();
void g() { new MoveOnly(f()); }
// CHECK: store {{.*}} @"??_7MoveOnly@implicit_copy_vtable@@6B@"
}
namespace delegating_ctor {
struct Y {};
struct X : virtual Y {
X(int);
X();
};
X::X(int) : X() {}
}
// CHECK: define dso_local x86_thiscallcc %"struct.delegating_ctor::X"* @"??0X@delegating_ctor@@QAE@H@Z"(
// CHECK: %[[is_most_derived_addr:.*]] = alloca i32, align 4
// CHECK: store i32 %is_most_derived, i32* %[[is_most_derived_addr]]
// CHECK: %[[is_most_derived:.*]] = load i32, i32* %[[is_most_derived_addr]]
// CHECK: call x86_thiscallcc {{.*}}* @"??0X@delegating_ctor@@QAE@XZ"({{.*}} i32 %[[is_most_derived]])
// Dtor thunks for classes in anonymous namespaces should be internal, not
// linkonce_odr.
namespace {
struct A {
virtual ~A() { }
};
}
void *getA() {
return (void*)new A();
}
// CHECK: define internal x86_thiscallcc i8* @"??_GA@?A0x{{[^@]*}}@@UAEPAXI@Z"
// CHECK: (%"struct.(anonymous namespace)::A"* %this, i32 %should_call_delete)
// CHECK: define internal x86_thiscallcc void @"??1A@?A0x{{[^@]*}}@@UAE@XZ"
// CHECK: (%"struct.(anonymous namespace)::A"* %this)
// Check that we correctly transform __stdcall to __thiscall for ctors and
// dtors.
class G {
public:
__stdcall G() {};
// DTORS4: define linkonce_odr dso_local x86_thiscallcc %class.G* @"??0G@@QAE@XZ"
__stdcall ~G() {};
// DTORS4: define linkonce_odr dso_local x86_thiscallcc void @"??1G@@QAE@XZ"
};
extern void testG() {
G g;
}
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