1 // RUN: %clang_cc1 -std=c++11 -triple x86_64-apple-darwin10 -emit-llvm -o - %s | FileCheck %s
2
3
4 struct Spacer { int x; };
5 struct A { double array[2]; };
6 struct B : Spacer, A { };
7
8 B &getB();
9
10 // CHECK-LABEL: define dereferenceable({{[0-9]+}}) %struct.A* @_Z4getAv()
11 // CHECK: call dereferenceable({{[0-9]+}}) %struct.B* @_Z4getBv()
12 // CHECK-NEXT: bitcast %struct.B*
13 // CHECK-NEXT: getelementptr inbounds i8, i8*
14 // CHECK-NEXT: bitcast i8* {{.*}} to %struct.A*
15 // CHECK-NEXT: ret %struct.A*
getA()16 A &&getA() { return static_cast<A&&>(getB()); }
17
18 int &getIntLValue();
19 int &&getIntXValue();
20 int getIntPRValue();
21
22 // CHECK-LABEL: define dereferenceable({{[0-9]+}}) i32* @_Z2f0v()
23 // CHECK: call dereferenceable({{[0-9]+}}) i32* @_Z12getIntLValuev()
24 // CHECK-NEXT: ret i32*
f0()25 int &&f0() { return static_cast<int&&>(getIntLValue()); }
26
27 // CHECK-LABEL: define dereferenceable({{[0-9]+}}) i32* @_Z2f1v()
28 // CHECK: call dereferenceable({{[0-9]+}}) i32* @_Z12getIntXValuev()
29 // CHECK-NEXT: ret i32*
f1()30 int &&f1() { return static_cast<int&&>(getIntXValue()); }
31
32 // CHECK-LABEL: define dereferenceable({{[0-9]+}}) i32* @_Z2f2v
33 // CHECK: call i32 @_Z13getIntPRValuev()
34 // CHECK-NEXT: store i32 {{.*}}, i32*
35 // CHECK-NEXT: ret i32*
f2()36 int &&f2() { return static_cast<int&&>(getIntPRValue()); }
37
38 bool ok;
39
40 class C
41 {
42 int* state_;
43
44 C(const C&) = delete;
45 C& operator=(const C&) = delete;
46 public:
C(int state)47 C(int state) : state_(new int(state)) { }
48
C(C && a)49 C(C&& a) {
50 state_ = a.state_;
51 a.state_ = 0;
52 }
53
~C()54 ~C() {
55 delete state_;
56 state_ = 0;
57 }
58 };
59
60 C test();
61
62 // CHECK-LABEL: define void @_Z15elide_copy_initv
elide_copy_init()63 void elide_copy_init() {
64 ok = false;
65 // CHECK: call void @_Z4testv
66 C a = test();
67 // CHECK-NEXT: call void @_ZN1CD1Ev
68 // CHECK-NEXT: ret void
69 }
70
71 // CHECK-LABEL: define void @_Z16test_move_returnv
test_move_return()72 C test_move_return() {
73 // CHECK: call void @_ZN1CC1Ei
74 C a1(3);
75 // CHECK: call void @_ZN1CC1Ei
76 C a2(4);
77 if (ok)
78 // CHECK: call void @_ZN1CC1EOS_
79 return a1;
80 // CHECK: call void @_ZN1CC1EOS_
81 return a2;
82 // CHECK: call void @_ZN1CD1Ev
83 // CHECK: call void @_ZN1CD1Ev
84 //CHECK: ret void
85 }
86
87 // PR10800: don't crash
88 namespace test1 {
89 int &&move(int&);
90
91 struct A { A(int); };
92 struct B {
93 A a;
94 B(int i);
95 };
96
97 // CHECK-LABEL: define void @_ZN5test11BC2Ei(
98 // CHECK: [[T0:%.*]] = call dereferenceable({{[0-9]+}}) i32* @_ZN5test14moveERi(
99 // CHECK-NEXT: [[T1:%.*]] = load i32, i32* [[T0]]
100 // CHECK-NEXT: call void @_ZN5test11AC1Ei({{.*}}, i32 [[T1]])
101 // CHECK-NEXT: ret void
B(int i)102 B::B(int i) : a(move(i)) {}
103 }
104
105 // PR11009
106 struct MoveConvertible {
107 operator int&& () const;
108 };
moveConstruct()109 void moveConstruct() {
110 (void)(int)MoveConvertible();
111 }
112