forked from OSchip/llvm-project
291 lines
11 KiB
C++
291 lines
11 KiB
C++
// RUN: %clang_cc1 -emit-llvm %s -o - -cxx-abi microsoft -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
|
|
|
|
namespace basic {
|
|
|
|
class A {
|
|
public:
|
|
A() { }
|
|
~A();
|
|
};
|
|
|
|
void no_constructor_destructor_infinite_recursion() {
|
|
A a;
|
|
|
|
// CHECK: define linkonce_odr x86_thiscallcc %"class.basic::A"* @"\01??0A@basic@@QAE@XZ"(%"class.basic::A"* returned %this)
|
|
// 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"** [[THIS_ADDR]]
|
|
// CHECK-NEXT: ret %"class.basic::A"* [[T1]]
|
|
// CHECK-NEXT: }
|
|
}
|
|
|
|
A::~A() {
|
|
// Make sure that the destructor doesn't call itself:
|
|
// CHECK: define {{.*}} @"\01??1A@basic@@QAE@XZ"
|
|
// CHECK-NOT: call void @"\01??1A@basic@@QAE@XZ"
|
|
// CHECK: ret
|
|
}
|
|
|
|
struct B {
|
|
B();
|
|
};
|
|
|
|
// Tests that we can define constructors outside the class (PR12784).
|
|
B::B() {
|
|
// CHECK: define x86_thiscallcc %"struct.basic::B"* @"\01??0B@basic@@QAE@XZ"(%"struct.basic::B"* returned %this)
|
|
// CHECK: ret
|
|
}
|
|
|
|
struct C {
|
|
virtual ~C() {
|
|
// DTORS: define linkonce_odr x86_thiscallcc void @"\01??_GC@basic@@UAEPAXI@Z"(%"struct.basic::C"* %this, i1 zeroext %should_call_delete)
|
|
// DTORS: %[[FROMBOOL:[0-9a-z]+]] = zext i1 %should_call_delete to i8
|
|
// DTORS-NEXT: store i8 %[[FROMBOOL]], i8* %[[SHOULD_DELETE_VAR:[0-9a-z._]+]], align 1
|
|
// DTORS: %[[SHOULD_DELETE_VALUE:[0-9a-z._]+]] = load i8* %[[SHOULD_DELETE_VAR]]
|
|
// DTORS: call x86_thiscallcc void @"\01??1C@basic@@UAE@XZ"(%"struct.basic::C"* %[[THIS:[0-9a-z]+]])
|
|
// DTORS-NEXT: %[[CONDITION:[0-9]+]] = icmp eq i8 %[[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 @"\01??3@YAXPAX@Z"(i8* %[[THIS_AS_VOID]])
|
|
// DTORS-NEXT: br label %[[CONTINUE_LABEL]]
|
|
//
|
|
// DTORS: [[CONTINUE_LABEL]]
|
|
// DTORS-NEXT: ret void
|
|
}
|
|
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 i8***
|
|
// CHECK: store i8** getelementptr inbounds ([2 x i8*]* @"\01??_7C@basic@@6B@", i64 0, i64 0), i8*** [[THIS_PTR]]
|
|
}
|
|
|
|
void call_complete_dtor(C *obj_ptr) {
|
|
// CHECK: define void @"\01?call_complete_dtor@basic@@YAXPAUC@1@@Z"(%"struct.basic::C"* %obj_ptr)
|
|
obj_ptr->~C();
|
|
// CHECK: %[[OBJ_PTR_VALUE:.*]] = load %"struct.basic::C"** %{{.*}}, align 4
|
|
// CHECK-NEXT: %[[PVTABLE:.*]] = bitcast %"struct.basic::C"* %[[OBJ_PTR_VALUE]] to void (%"struct.basic::C"*, i1)***
|
|
// CHECK-NEXT: %[[VTABLE:.*]] = load void (%"struct.basic::C"*, i1)*** %[[PVTABLE]]
|
|
// CHECK-NEXT: %[[PVDTOR:.*]] = getelementptr inbounds void (%"struct.basic::C"*, i1)** %[[VTABLE]], i64 0
|
|
// CHECK-NEXT: %[[VDTOR:.*]] = load void (%"struct.basic::C"*, i1)** %[[PVDTOR]]
|
|
// CHECK-NEXT: call x86_thiscallcc void %[[VDTOR]](%"struct.basic::C"* %[[OBJ_PTR_VALUE]], i1 zeroext false)
|
|
// CHECK-NEXT: ret void
|
|
}
|
|
|
|
void call_deleting_dtor(C *obj_ptr) {
|
|
// CHECK: define void @"\01?call_deleting_dtor@basic@@YAXPAUC@1@@Z"(%"struct.basic::C"* %obj_ptr)
|
|
delete obj_ptr;
|
|
// CHECK: %[[OBJ_PTR_VALUE:.*]] = load %"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 void (%"struct.basic::C"*, i1)***
|
|
// CHECK-NEXT: %[[VTABLE:.*]] = load void (%"struct.basic::C"*, i1)*** %[[PVTABLE]]
|
|
// CHECK-NEXT: %[[PVDTOR:.*]] = getelementptr inbounds void (%"struct.basic::C"*, i1)** %[[VTABLE]], i64 0
|
|
// CHECK-NEXT: %[[VDTOR:.*]] = load void (%"struct.basic::C"*, i1)** %[[PVDTOR]]
|
|
// CHECK-NEXT: call x86_thiscallcc void %[[VDTOR]](%"struct.basic::C"* %[[OBJ_PTR_VALUE]], i1 zeroext true)
|
|
// 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: @"\01?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: @"\01?dtor_static@?1???1D@basic@@QAE@XZ@4HA"
|
|
}
|
|
};
|
|
|
|
void use_D() { D c; }
|
|
|
|
} // end namespace basic
|
|
|
|
|
|
namespace constructors {
|
|
|
|
struct A {
|
|
A() {}
|
|
};
|
|
|
|
struct B : A {
|
|
B();
|
|
~B();
|
|
};
|
|
|
|
B::B() {
|
|
// CHECK: define x86_thiscallcc %"struct.constructors::B"* @"\01??0B@constructors@@QAE@XZ"(%"struct.constructors::B"* returned %this)
|
|
// CHECK: call x86_thiscallcc %"struct.constructors::A"* @"\01??0A@constructors@@QAE@XZ"(%"struct.constructors::A"* %{{.*}})
|
|
// CHECK: ret
|
|
}
|
|
|
|
struct C : virtual A {
|
|
C();
|
|
};
|
|
|
|
C::C() {
|
|
// CHECK: define x86_thiscallcc %"struct.constructors::C"* @"\01??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* %[[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* %[[this_i8]], i64 0
|
|
// CHECK-NEXT: %[[vbptr:.*]] = bitcast i8* %[[vbptr_off]] to [2 x i32]**
|
|
// CHECK-NEXT: store [2 x i32]* @"\01??_8C@constructors@@7B@", [2 x i32]** %[[vbptr]]
|
|
// CHECK-NEXT: bitcast %"struct.constructors::C"* %{{.*}} to %"struct.constructors::A"*
|
|
// CHECK-NEXT: call x86_thiscallcc %"struct.constructors::A"* @"\01??0A@constructors@@QAE@XZ"(%"struct.constructors::A"* %{{.*}})
|
|
// CHECK-NEXT: br label %[[SKIP_VBASES]]
|
|
//
|
|
// CHECK: [[SKIP_VBASES]]
|
|
// CHECK: @"\01??_7C@constructors@@6B@"
|
|
// CHECK: ret
|
|
}
|
|
|
|
void create_C() {
|
|
C c;
|
|
// CHECK: define void @"\01?create_C@constructors@@YAXXZ"()
|
|
// CHECK: call x86_thiscallcc %"struct.constructors::C"* @"\01??0C@constructors@@QAE@XZ"(%"struct.constructors::C"* %c, i32 1)
|
|
// CHECK: ret
|
|
}
|
|
|
|
struct D : C {
|
|
D();
|
|
};
|
|
|
|
D::D() {
|
|
// CHECK: define x86_thiscallcc %"struct.constructors::D"* @"\01??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* %[[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* %[[this_i8]], i64 0
|
|
// CHECK-NEXT: %[[vbptr:.*]] = bitcast i8* %[[vbptr_off]] to [2 x i32]**
|
|
// CHECK-NEXT: store [2 x i32]* @"\01??_8D@constructors@@7B@", [2 x i32]** %[[vbptr]]
|
|
// CHECK-NEXT: bitcast %"struct.constructors::D"* %{{.*}} to %"struct.constructors::A"*
|
|
// CHECK-NEXT: call x86_thiscallcc %"struct.constructors::A"* @"\01??0A@constructors@@QAE@XZ"(%"struct.constructors::A"* %{{.*}})
|
|
// CHECK-NEXT: br label %[[SKIP_VBASES]]
|
|
//
|
|
// CHECK: [[SKIP_VBASES]]
|
|
// CHECK: call x86_thiscallcc %"struct.constructors::C"* @"\01??0C@constructors@@QAE@XZ"(%"struct.constructors::C"* %{{.*}}, i32 0)
|
|
// CHECK: ret
|
|
}
|
|
|
|
struct E : virtual C {
|
|
E();
|
|
};
|
|
|
|
E::E() {
|
|
// CHECK: define x86_thiscallcc %"struct.constructors::E"* @"\01??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* %[[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* %[[this_i8]], i64 0
|
|
// CHECK-NEXT: %[[vbptr_E:.*]] = bitcast i8* %[[offs]] to [3 x i32]**
|
|
// CHECK-NEXT: store [3 x i32]* @"\01??_8E@constructors@@7B01@@", [3 x i32]** %[[vbptr_E]]
|
|
// CHECK-NEXT: %[[offs:.*]] = getelementptr inbounds i8* %[[this_i8]], i64 4
|
|
// CHECK-NEXT: %[[vbptr_C:.*]] = bitcast i8* %[[offs]] to [2 x i32]**
|
|
// CHECK-NEXT: store [2 x i32]* @"\01??_8E@constructors@@7BC@1@@", [2 x i32]** %[[vbptr_C]]
|
|
// CHECK-NEXT: bitcast %"struct.constructors::E"* %{{.*}} to %"struct.constructors::A"*
|
|
// CHECK-NEXT: call x86_thiscallcc %"struct.constructors::A"* @"\01??0A@constructors@@QAE@XZ"(%"struct.constructors::A"* %{{.*}})
|
|
// CHECK: call x86_thiscallcc %"struct.constructors::C"* @"\01??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 x86_thiscallcc %"struct.constructors::F"* @"\01??0F@constructors@@QAE@XZ"
|
|
|
|
} // end namespace constructors
|
|
|
|
namespace dtors {
|
|
|
|
struct A {
|
|
~A();
|
|
};
|
|
|
|
void call_nv_complete(A *a) {
|
|
a->~A();
|
|
// CHECK: define void @"\01?call_nv_complete@dtors@@YAXPAUA@1@@Z"
|
|
// CHECK: call x86_thiscallcc void @"\01??1A@dtors@@QAE@XZ"
|
|
// CHECK: ret
|
|
}
|
|
|
|
// CHECK: declare x86_thiscallcc void @"\01??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 void @"\01?call_vbase_complete@dtors@@YAXPAUD@1@@Z"
|
|
// CHECK: call x86_thiscallcc void @"\01??_DD@dtors@@QAE@XZ"(%"struct.dtors::D"* %{{[^,]+}})
|
|
// CHECK: ret
|
|
}
|
|
|
|
// The complete dtor should call the base dtors for D and the vbase A (once).
|
|
// CHECK: define linkonce_odr x86_thiscallcc void @"\01??_DD@dtors@@QAE@XZ"
|
|
// CHECK-NOT: call
|
|
// CHECK: call x86_thiscallcc void @"\01??1D@dtors@@QAE@XZ"
|
|
// CHECK-NOT: call
|
|
// CHECK: call x86_thiscallcc void @"\01??1A@dtors@@QAE@XZ"
|
|
// CHECK-NOT: call
|
|
// CHECK: ret
|
|
|
|
void destroy_d_complete() {
|
|
D d;
|
|
// CHECK: define void @"\01?destroy_d_complete@dtors@@YAXXZ"
|
|
// CHECK: call x86_thiscallcc void @"\01??_DD@dtors@@QAE@XZ"(%"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 void @"\01?call_nv_deleting_dtor@dtors@@YAXPAUD@1@@Z"
|
|
// CHECK: call x86_thiscallcc void @"\01??_DD@dtors@@QAE@XZ"(%"struct.dtors::D"* %{{[^,]+}})
|
|
// CHECK: call void @"\01??3@YAXPAX@Z"
|
|
// CHECK: ret
|
|
}
|
|
|
|
}
|