1// RUN: %clang_cc1 -std=c++11 -triple x86_64-apple-darwin10 %s -emit-llvm -o %t
2// RUN: FileCheck %s < %t
3// RUN: FileCheck -check-prefix=CHECK-PR10720 %s < %t
4
5extern "C" int printf(...);
6
7struct M {
8  M() { printf("M()\n"); }
9  M(int i) { iM = i; printf("M(%d)\n", i); }
10  int iM;
11  void MPR() {printf("iM = %d\n", iM); };
12};
13
14struct P {
15  P() { printf("P()\n"); }
16  P(int i) { iP = i; printf("P(%d)\n", i); }
17  int iP;
18  void PPR() {printf("iP = %d\n", iP); };
19};
20
21struct Q {
22  Q() { printf("Q()\n"); }
23  Q(int i) { iQ = i; printf("Q(%d)\n", i); }
24  int iQ;
25  void QPR() {printf("iQ = %d\n", iQ); };
26};
27
28struct N : M , P, Q {
29  N() : f1(1.314), P(2000), ld(00.1234+f1), M(1000), Q(3000),
30        d1(3.4567), i1(1234), m1(100) { printf("N()\n"); }
31  M m1;
32  M m2;
33  float f1;
34  int i1;
35  float d1;
36  void PR() {
37    printf("f1 = %f d1 = %f i1 = %d ld = %f \n", f1,d1,i1, ld);
38    MPR();
39    PPR();
40    QPR();
41    printf("iQ = %d\n", iQ);
42    printf("iP = %d\n", iP);
43    printf("iM = %d\n", iM);
44    // FIXME. We don't yet support this syntax.
45    // printf("iQ = %d\n", (*this).iQ);
46    printf("iQ = %d\n", this->iQ);
47    printf("iP = %d\n", this->iP);
48    printf("iM = %d\n", this->iM);
49  }
50  float ld;
51  float ff;
52  M arr_m[3];
53  P arr_p[1][3];
54  Q arr_q[2][3][4];
55};
56
57int main() {
58  M m1;
59
60  N n1;
61  n1.PR();
62}
63
64// PR5826
65template <class T> struct A {
66  A() {}
67  A(int) {}
68  A(const A&) {}
69  ~A() {}
70  operator int() {return 0;}
71};
72
73// CHECK-LABEL: define void @_Z1fv()
74void f() {
75  // CHECK: call void @_ZN1AIsEC1Ei
76  A<short> a4 = 97;
77
78  // CHECK-NEXT: store i32 17
79  int i = 17;
80
81  // CHECK-NEXT: call void @_ZN1AIsED1Ev
82  // CHECK-NOT: call void @_ZN1AIsED1Ev
83  // CHECK: ret void
84}
85
86// Make sure we initialize the vtable pointer if it's required by a
87// base initializer.
88namespace InitVTable {
89  struct A { A(int); };
90  struct B : A {
91    virtual int foo();
92    B();
93    B(int);
94  };
95
96  // CHECK-LABEL: define void @_ZN10InitVTable1BC2Ev(%"struct.InitVTable::B"* %this) unnamed_addr
97  // CHECK:      [[T0:%.*]] = bitcast [[B:%.*]]* [[THIS:%.*]] to i8***
98  // CHECK-NEXT: store i8** getelementptr inbounds ([3 x i8*]* @_ZTVN10InitVTable1BE, i64 0, i64 2), i8*** [[T0]]
99  // CHECK:      [[VTBL:%.*]] = load i32 ([[B]]*)*** {{%.*}}
100  // CHECK-NEXT: [[FNP:%.*]] = getelementptr inbounds i32 ([[B]]*)** [[VTBL]], i64 0
101  // CHECK-NEXT: [[FN:%.*]] = load i32 ([[B]]*)** [[FNP]]
102  // CHECK-NEXT: [[ARG:%.*]] = call i32 [[FN]]([[B]]* [[THIS]])
103  // CHECK-NEXT: call void @_ZN10InitVTable1AC2Ei({{.*}}* {{%.*}}, i32 [[ARG]])
104  // CHECK-NEXT: [[T0:%.*]] = bitcast [[B]]* [[THIS]] to i8***
105  // CHECK-NEXT: store i8** getelementptr inbounds ([3 x i8*]* @_ZTVN10InitVTable1BE, i64 0, i64 2), i8*** [[T0]]
106  // CHECK-NEXT: ret void
107  B::B() : A(foo()) {}
108
109  // CHECK-LABEL: define void @_ZN10InitVTable1BC2Ei(%"struct.InitVTable::B"* %this, i32 %x) unnamed_addr
110  // CHECK:      [[ARG:%.*]] = add nsw i32 {{%.*}}, 5
111  // CHECK-NEXT: call void @_ZN10InitVTable1AC2Ei({{.*}}* {{%.*}}, i32 [[ARG]])
112  // CHECK-NEXT: [[T0:%.*]] = bitcast [[B]]* {{%.*}} to i8***
113  // CHECK-NEXT: store i8** getelementptr inbounds ([3 x i8*]* @_ZTVN10InitVTable1BE, i64 0, i64 2), i8*** [[T0]]
114  // CHECK-NEXT: ret void
115  B::B(int x) : A(x + 5) {}
116}
117
118namespace rdar9694300 {
119  struct X {
120    int x;
121  };
122
123  // CHECK-LABEL: define void @_ZN11rdar96943001fEv
124  void f() {
125    // CHECK: alloca
126    X x;
127    // CHECK-NEXT: [[I:%.*]] = alloca i32
128    // CHECK-NEXT: store i32 17, i32* [[I]]
129    int i = 17;
130    // CHECK-NEXT: ret void
131  }
132}
133
134// Check that we emit a zero initialization step for list-value-initialization
135// which calls a trivial default constructor.
136namespace PR13273 {
137  struct U {
138    int t;
139    U() = default;
140  };
141
142  struct S : U {
143    S() = default;
144  };
145
146  // CHECK: define {{.*}}@_ZN7PR132731fEv(
147  int f() {
148    // CHECK-NOT: }
149    // CHECK: llvm.memset{{.*}}i8 0
150    return (new S{})->t;
151  }
152}
153
154template<typename T>
155struct X {
156  X(const X &);
157
158  T *start;
159  T *end;
160};
161
162template<typename T> struct X;
163
164// Make sure that the instantiated constructor initializes start and
165// end properly.
166// CHECK-LABEL: define linkonce_odr void @_ZN1XIiEC2ERKS0_(%struct.X* %this, %struct.X* nonnull %other) unnamed_addr
167// CHECK: {{store.*null}}
168// CHECK: {{store.*null}}
169// CHECK: ret
170template<typename T>
171X<T>::X(const X &other) : start(0), end(0) { }
172
173X<int> get_X(X<int> x) { return x; }
174
175namespace PR10720 {
176  struct X {
177    X(const X&);
178    X(X&&);
179    X& operator=(const X&);
180    X& operator=(X&&);
181    ~X();
182  };
183
184  struct pair2 {
185    X second[4];
186
187    // CHECK-PR10720: define linkonce_odr {{.*}} @_ZN7PR107205pair2aSERKS0_
188    // CHECK-PR10720: load
189    // CHECK-PR10720: icmp ne
190    // CHECK-PR10720-NEXT: br i1
191    // CHECK-PR10720: call {{.*}} @_ZN7PR107201XaSERKS0_
192    // CHECK-PR10720: ret
193    pair2 &operator=(const pair2&) = default;
194
195    // CHECK-PR10720: define linkonce_odr {{.*}} @_ZN7PR107205pair2aSEOS0_
196    // CHECK-PR10720: load
197    // CHECK-PR10720: icmp ne
198    // CHECK-PR10720-NEXT: br i1
199    // CHECK-PR10720: call {{.*}} @_ZN7PR107201XaSEOS0_
200    // CHECK-PR10720: ret
201    pair2 &operator=(pair2&&) = default;
202
203    // CHECK-PR10720-LABEL: define linkonce_odr void @_ZN7PR107205pair2C2EOS0_
204    // CHECK-PR10720-NOT: ret
205    // CHECK-PR10720: load
206    // CHECK-PR10720: icmp ult
207    // CHECK-PR10720-NEXT: br i1
208    // CHECK-PR10720: call void @_ZN7PR107201XC1EOS0_
209    // CHECK-PR10720-NEXT: br label
210    // CHECK-PR10720: ret void
211    pair2(pair2&&) = default;
212
213    // CHECK-PR10720-LABEL: define linkonce_odr void @_ZN7PR107205pair2C2ERKS0_
214    // CHECK-PR10720-NOT: ret
215    // CHECK-PR10720: load
216    // CHECK-PR10720: icmp ult
217    // CHECK-PR10720-NEXT: br i1
218    // CHECK-PR10720: call void @_ZN7PR107201XC1ERKS0_
219    // CHECK-PR10720-NEXT: br label
220    // CHECK-PR10720: ret void
221    pair2(const pair2&) = default;
222  };
223
224  struct pair : X { // Make the copy constructor non-trivial, so we actually generate it.
225    int second[4];
226    // CHECK-PR10720-LABEL: define linkonce_odr void @_ZN7PR107204pairC2ERKS0_
227    // CHECK-PR10720-NOT: ret
228    // CHECK-PR10720: call void @llvm.memcpy
229    // CHECK-PR10720-NEXT: ret void
230    pair(const pair&) = default;
231  };
232
233  void foo(const pair &x, const pair2 &x2) {
234    pair y(x);
235    pair2 y2(x2);
236    pair2 y2m(static_cast<pair2&&>(y2));
237
238    y2 = x2;
239    y2m = static_cast<pair2&&>(y2);
240  }
241
242}
243