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// RUN: %clang_cc1 %s -triple x86_64-linux -emit-llvm -o - -mconstructor-aliases | FileCheck %s
namespace test1 {
// test that we produce an alias when the destructor is weak_odr
// CHECK-DAG: @_ZN5test16foobarIvEC1Ev = alias weak_odr void (%"struct.test1::foobar"*)* @_ZN5test16foobarIvEC2Ev
// CHECK-DAG: define weak_odr void @_ZN5test16foobarIvEC2Ev(
template <typename T> struct foobar {
foobar() {}
};
template struct foobar<void>;
}
namespace test2 {
// test that when the destrucor is linkonce_odr we just replace every use of
// C1 with C2.
// CHECK-DAG: define linkonce_odr void @_ZN5test26foobarIvEC2Ev(
// CHECK-DAG: call void @_ZN5test26foobarIvEC2Ev
void g();
template <typename T> struct foobar {
foobar() { g(); }
};
foobar<void> x;
}
namespace test3 {
// test that instead of an internal alias we just use the other destructor
// directly.
// CHECK-DAG: define internal void @_ZN5test312_GLOBAL__N_11AD2Ev(
// CHECK-DAG: call i32 @__cxa_atexit{{.*}}_ZN5test312_GLOBAL__N_11AD2Ev
namespace {
struct A {
~A() {}
};
struct B : public A {};
}
B x;
}
namespace test4 {
// Test that we don't produce aliases from B to A. We cannot because we cannot
// guarantee that they will be present in every TU. Instead, we just call
// A's destructor directly.
// CHECK-DAG: define linkonce_odr void @_ZN5test41AD2Ev(
// CHECK-DAG: call i32 @__cxa_atexit{{.*}}_ZN5test41AD2Ev
struct A {
virtual ~A() {}
};
struct B : public A{
~B() {}
};
B X;
}
namespace test5 {
// similar to test4, but with an internal B.
// CHECK-DAG: define linkonce_odr void @_ZN5test51AD2Ev(
// CHECK-DAG: call i32 @__cxa_atexit{{.*}}_ZN5test51AD2Ev
struct A {
virtual ~A() {}
};
namespace {
struct B : public A{
~B() {}
};
}
B X;
}
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