blob: a7c74ae5c06d9e2e78891f950afbd78d0cb686b8 [file] [log] [blame]
Douglas Gregor88b22a42011-01-25 16:13:26 +00001// RUN: %clang_cc1 -std=c++0x -triple x86_64-apple-darwin10 -emit-llvm -o - %s | FileCheck %s
2
3
4struct Spacer { int x; };
5struct A { double array[2]; };
6struct B : Spacer, A { };
7
8B &getB();
9
10// CHECK: define %struct.A* @_Z4getAv()
11// CHECK: call %struct.B* @_Z4getBv()
12// CHECK-NEXT: bitcast %struct.B*
13// CHECK-NEXT: getelementptr i8*
14// CHECK-NEXT: bitcast i8* {{.*}} to %struct.A*
15// CHECK-NEXT: ret %struct.A*
16A &&getA() { return static_cast<A&&>(getB()); }
17
18int &getIntLValue();
19int &&getIntXValue();
20int getIntPRValue();
21
22// CHECK: define i32* @_Z2f0v()
23// CHECK: call i32* @_Z12getIntLValuev()
24// CHECK-NEXT: ret i32*
25int &&f0() { return static_cast<int&&>(getIntLValue()); }
26
27// CHECK: define i32* @_Z2f1v()
28// CHECK: call i32* @_Z12getIntXValuev()
29// CHECK-NEXT: ret i32*
30int &&f1() { return static_cast<int&&>(getIntXValue()); }
31
32// CHECK: define i32* @_Z2f2v
33// CHECK: call i32 @_Z13getIntPRValuev()
34// CHECK-NEXT: store i32 {{.*}}, i32*
35// CHECK-NEXT: ret i32*
36int &&f2() { return static_cast<int&&>(getIntPRValue()); }
Douglas Gregorb3d5e2f2011-01-27 23:22:05 +000037
38bool ok;
39
40class C
41{
42 int* state_;
43
44 C(const C&) = delete;
45 C& operator=(const C&) = delete;
46public:
47 C(int state) : state_(new int(state)) { }
48
49 C(C&& a) {
50 state_ = a.state_;
51 a.state_ = 0;
52 }
53
54 ~C() {
55 delete state_;
56 state_ = 0;
57 }
58};
59
60C test();
61
62// CHECK: define void @_Z15elide_copy_initv
63void elide_copy_init() {
64 ok = false;
65 // FIXME: We're doing an extra move here, when we shouldn't be!
66 // CHECK: call void @_Z4testv(%class.C* sret %ref.tmp)
67 // CHECK: call void @_ZN1CC1EOS_(%class.C* %a, %class.C* %ref.tmp)
68 // CHECK: call void @_ZN1CD1Ev(%class.C* %ref.tmp)
69 C a = test();
70 // CHECK: call void @_ZN1CD1Ev(%class.C* %a)
71 // CHECK: ret void
72}
73
74// CHECK: define void @_Z16test_move_returnv
75C test_move_return() {
76 // CHECK: call void @_ZN1CC1Ei
77 C a1(3);
78 // CHECK: call void @_ZN1CC1Ei
79 C a2(4);
80 if (ok)
81 // CHECK: call void @_ZN1CC1EOS_
82 return a1;
83 // CHECK: call void @_ZN1CC1EOS_
84 return a2;
85 // CHECK: call void @_ZN1CD1Ev
86 // CHECK: call void @_ZN1CD1Ev
87 //CHECK: ret void
88}