1// RUN: %clang_cc1 -triple x86_64-apple-darwin10 %s -emit-llvm -o - | FileCheck %s
2
3struct Member { int x; Member(); Member(int); Member(const Member &); };
4struct VBase { int x; VBase(); VBase(int); VBase(const VBase &); };
5
6struct ValueClass {
7  ValueClass(int x, int y) : x(x), y(y) {}
8  int x;
9  int y;
10}; // subject to ABI trickery
11
12
13
14/* Test basic functionality. */
15struct A {
16  A(struct Undeclared &);
17  A(ValueClass);
18  Member mem;
19};
20
21A::A(struct Undeclared &ref) : mem(0) {}
22
23// Check that delegation works.
24// CHECK-LABEL: define void @_ZN1AC2ER10Undeclared(%struct.A* %this, %struct.Undeclared* nonnull %ref) unnamed_addr
25// CHECK: call void @_ZN6MemberC1Ei(
26
27// CHECK-LABEL: define void @_ZN1AC1ER10Undeclared(%struct.A* %this, %struct.Undeclared* nonnull %ref) unnamed_addr
28// CHECK: call void @_ZN1AC2ER10Undeclared(
29
30A::A(ValueClass v) : mem(v.y - v.x) {}
31
32// CHECK-LABEL: define void @_ZN1AC2E10ValueClass(%struct.A* %this, i64 %v.coerce) unnamed_addr
33// CHECK: call void @_ZN6MemberC1Ei(
34
35// CHECK-LABEL: define void @_ZN1AC1E10ValueClass(%struct.A* %this, i64 %v.coerce) unnamed_addr
36// CHECK: call void @_ZN1AC2E10ValueClass(
37
38/* Test that things work for inheritance. */
39struct B : A {
40  B(struct Undeclared &);
41  Member mem;
42};
43
44B::B(struct Undeclared &ref) : A(ref), mem(1) {}
45
46// CHECK-LABEL: define void @_ZN1BC2ER10Undeclared(%struct.B* %this, %struct.Undeclared* nonnull %ref) unnamed_addr
47// CHECK: call void @_ZN1AC2ER10Undeclared(
48// CHECK: call void @_ZN6MemberC1Ei(
49
50// CHECK-LABEL: define void @_ZN1BC1ER10Undeclared(%struct.B* %this, %struct.Undeclared* nonnull %ref) unnamed_addr
51// CHECK: call void @_ZN1BC2ER10Undeclared(
52
53
54/* Test that the delegation optimization is disabled for classes with
55   virtual bases (for now).  This is necessary because a vbase
56   initializer could access one of the parameter variables by
57   reference.  That's a solvable problem, but let's not solve it right
58   now. */
59struct C : virtual A {
60  C(int);
61  Member mem;
62};
63C::C(int x) : A(ValueClass(x, x+1)), mem(x * x) {}
64
65// CHECK-LABEL: define void @_ZN1CC2Ei(%struct.C* %this, i8** %vtt, i32 %x) unnamed_addr
66// CHECK: call void @_ZN6MemberC1Ei(
67
68// CHECK-LABEL: define void @_ZN1CC1Ei(%struct.C* %this, i32 %x) unnamed_addr
69// CHECK: call void @_ZN10ValueClassC1Eii(
70// CHECK: call void @_ZN1AC2E10ValueClass(
71// CHECK: call void @_ZN6MemberC1Ei(
72
73
74/* Test that the delegation optimization is disabled for varargs
75   constructors. */
76struct D : A {
77  D(int, ...);
78  Member mem;
79};
80
81D::D(int x, ...) : A(ValueClass(x, x+1)), mem(x*x) {}
82
83// CHECK-LABEL: define void @_ZN1DC2Eiz(%struct.D* %this, i32 %x, ...) unnamed_addr
84// CHECK: call void @_ZN10ValueClassC1Eii(
85// CHECK: call void @_ZN1AC2E10ValueClass(
86// CHECK: call void @_ZN6MemberC1Ei(
87
88// CHECK-LABEL: define void @_ZN1DC1Eiz(%struct.D* %this, i32 %x, ...) unnamed_addr
89// CHECK: call void @_ZN10ValueClassC1Eii(
90// CHECK: call void @_ZN1AC2E10ValueClass(
91// CHECK: call void @_ZN6MemberC1Ei(
92
93// PR6622:  this shouldn't crash
94namespace test0 {
95  struct A {};
96  struct B : virtual A { int x; };
97  struct C : B {};
98
99  void test(C &in) {
100    C tmp = in;
101  }
102}
103
104namespace test1 {
105  struct A { A(); void *ptr; };
106  struct B { B(); int x; A a[0]; };
107  B::B() {}
108  // CHECK-LABEL:    define void @_ZN5test11BC2Ev(
109  // CHECK:      [[THIS:%.*]] = load [[B:%.*]]*, [[B:%.*]]**
110  // CHECK-NEXT: ret void
111}
112