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| // RUN: %clang_cc1 %s -triple=x86_64-apple-darwin10 -emit-llvm -o - | FileCheck %s
// See Test9 for test description.
// CHECK: @_ZTTN5Test91BE = linkonce_odr unnamed_addr constant
namespace Test1 {
// Check that we don't initialize the vtable pointer in A::~A(), since the destructor body is trivial.
struct A {
virtual void f();
~A();
};
// CHECK-LABEL: define void @_ZN5Test11AD2Ev
// CHECK-NOT: store i32 (...)** bitcast (i8** getelementptr inbounds ({ [3 x i8*] }, { [3 x i8*] }* @_ZTVN5Test11AE, i64 0, i64 2) to i32 (...)**), i32 (...)***
A::~A()
{
}
}
namespace Test2 {
// Check that we do initialize the vtable pointer in A::~A() since the destructor body isn't trivial.
struct A {
virtual void f();
~A();
};
// CHECK-LABEL: define void @_ZN5Test21AD2Ev
// CHECK: store i32 (...)** bitcast (i8** getelementptr inbounds ({ [3 x i8*] }, { [3 x i8*] }* @_ZTVN5Test21AE, i32 0, inrange i32 0, i32 2) to i32 (...)**), i32 (...)***
A::~A() {
f();
}
}
namespace Test3 {
// Check that we don't initialize the vtable pointer in A::~A(), since the destructor body is trivial
// and Field's destructor body is also trivial.
struct Field {
~Field() { }
};
struct A {
virtual void f();
~A();
Field field;
};
// CHECK-LABEL: define void @_ZN5Test31AD2Ev
// CHECK-NOT: store i32 (...)** bitcast (i8** getelementptr inbounds ({ [3 x i8*] }, { [3 x i8*] }* @_ZTVN5Test31AE, i32 0, inrange i32 0, i32 2) to i32 (...)**), i32 (...)***
A::~A() {
}
}
namespace Test4 {
// Check that we do initialize the vtable pointer in A::~A(), since Field's destructor body
// isn't trivial.
void f();
struct Field {
~Field() { f(); }
};
struct A {
virtual void f();
~A();
Field field;
};
// CHECK-LABEL: define void @_ZN5Test41AD2Ev
// CHECK: store i32 (...)** bitcast (i8** getelementptr inbounds ({ [3 x i8*] }, { [3 x i8*] }* @_ZTVN5Test41AE, i32 0, inrange i32 0, i32 2) to i32 (...)**), i32 (...)***
A::~A()
{
}
}
namespace Test5 {
// Check that we do initialize the vtable pointer in A::~A(), since Field's destructor isn't
// available in this translation unit.
struct Field {
~Field();
};
struct A {
virtual void f();
~A();
Field field;
};
// CHECK-LABEL: define void @_ZN5Test51AD2Ev
// CHECK: store i32 (...)** bitcast (i8** getelementptr inbounds ({ [3 x i8*] }, { [3 x i8*] }* @_ZTVN5Test51AE, i32 0, inrange i32 0, i32 2) to i32 (...)**), i32 (...)***
A::~A()
{
}
}
namespace Test6 {
// Check that we do initialize the vtable pointer in A::~A(), since Field has a member
// variable with a non-trivial destructor body.
struct NonTrivialDestructorBody {
~NonTrivialDestructorBody();
};
struct Field {
NonTrivialDestructorBody nonTrivialDestructorBody;
};
struct A {
virtual void f();
~A();
Field field;
};
// CHECK-LABEL: define void @_ZN5Test61AD2Ev
// CHECK: store i32 (...)** bitcast (i8** getelementptr inbounds ({ [3 x i8*] }, { [3 x i8*] }* @_ZTVN5Test61AE, i32 0, inrange i32 0, i32 2) to i32 (...)**), i32 (...)***
A::~A()
{
}
}
namespace Test7 {
// Check that we do initialize the vtable pointer in A::~A(), since Field has a base
// class with a non-trivial destructor body.
struct NonTrivialDestructorBody {
~NonTrivialDestructorBody();
};
struct Field : NonTrivialDestructorBody { };
struct A {
virtual void f();
~A();
Field field;
};
// CHECK-LABEL: define void @_ZN5Test71AD2Ev
// CHECK: store i32 (...)** bitcast (i8** getelementptr inbounds ({ [3 x i8*] }, { [3 x i8*] }* @_ZTVN5Test71AE, i32 0, inrange i32 0, i32 2) to i32 (...)**), i32 (...)***
A::~A()
{
}
}
namespace Test8 {
// Check that we do initialize the vtable pointer in A::~A(), since Field has a virtual base
// class with a non-trivial destructor body.
struct NonTrivialDestructorBody {
~NonTrivialDestructorBody();
};
struct Field : virtual NonTrivialDestructorBody { };
struct A {
virtual void f();
~A();
Field field;
};
// CHECK-LABEL: define void @_ZN5Test81AD2Ev
// CHECK: store i32 (...)** bitcast (i8** getelementptr inbounds ({ [3 x i8*] }, { [3 x i8*] }* @_ZTVN5Test81AE, i32 0, inrange i32 0, i32 2) to i32 (...)**), i32 (...)***
A::~A()
{
}
}
namespace Test9 {
// Check that we emit a VTT for B, even though we don't initialize the vtable pointer in the destructor.
struct A { virtual ~A () { } };
struct B : virtual A {};
struct C : virtual B {
virtual ~C();
};
C::~C() {}
}
|