aboutsummaryrefslogtreecommitdiff
path: root/test/CodeGenCXX/copy-constructor-synthesis.cpp
blob: c8b265ca2d123db5aa245176d0930f999c8cf5f9 (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
// RUN: %clang_cc1 -triple x86_64-apple-darwin -emit-llvm -o - %s | FileCheck %s

extern "C" int printf(...);

int init = 100;

struct M {
  int iM;
  M() : iM(init++) {}
};

struct N {
  int iN;
  N() : iN(200) {}
  N(N const & arg){this->iN = arg.iN; }
};

struct P {
  int iP;
  P() : iP(init++) {}
};


// CHECK-LABEL: define linkonce_odr void @_ZN1XC1ERKS_(%struct.X* %this, %struct.X*) unnamed_addr
struct X  : M, N, P { // ...
  X() : f1(1.0), d1(2.0), i1(3), name("HELLO"), bf1(0xff), bf2(0xabcd),
        au_i1(1234), au1_4("MASKED") {}
  P p0;
  void pr() {
    printf("iM = %d iN = %d, m1.iM = %d\n", iM, iN, m1.iM); 
    printf("im = %d p0.iP = %d, p1.iP = %d\n", iP, p0.iP, p1.iP); 
    printf("f1 = %f  d1 = %f  i1 = %d name(%s) \n", f1, d1, i1, name);
    printf("bf1 = %x  bf2 = %x\n", bf1, bf2);
    printf("au_i2 = %d\n", au_i2); 
    printf("au1_1 = %s\n", au1_1); 
  }
  M m1;
  P p1;
  float f1;
  double d1;
  int i1;
  const char *name;
  unsigned bf1 : 8;
  unsigned bf2 : 16;
  int arr[2];
  _Complex float complex;

  union {
    int au_i1;
    int au_i2;
  };
  union {
    const char * au1_1;
    float au1_2;
    int au1_3;
    const char * au1_4;
  };
};

static int ix = 1;
// class with user-defined copy constructor.
struct S {
  S() : iS(ix++) {  }
  S(const S& arg) { *this = arg; }
  int iS;
};

// class with trivial copy constructor.
struct I {
  I() : iI(ix++) {  }
  int iI;
};

struct XM {
  XM() {  }
  double dXM;
  S ARR_S[3][4][2];
  void pr() {
   for (unsigned i = 0; i < 3; i++)
     for (unsigned j = 0; j < 4; j++)
      for (unsigned k = 0; k < 2; k++)
        printf("ARR_S[%d][%d][%d] = %d\n", i,j,k, ARR_S[i][j][k].iS);
   for (unsigned i = 0; i < 3; i++)
      for (unsigned k = 0; k < 2; k++)
        printf("ARR_I[%d][%d] = %d\n", i,k, ARR_I[i][k].iI);
  }
  I ARR_I[3][2];
};

int main() {
  X a;
  X b(a);
  b.pr();
  X x;
  X c(x);
  c.pr();

  XM m0;
  XM m1 = m0;
  m1.pr();
}

struct A {
};

struct B : A {
  A &a;
};

void f(const B &b1) {
  B b2(b1);
}

// PR6628
namespace PR6628 {

struct T {
  T();
  ~T();

  double d;
};

struct A {
  A(const A &other, const T &t = T(), const T& t2 = T());
};

struct B : A {
  A a1;
  A a2;
  A a[10];
};

// Force the copy constructor to be synthesized.
void f(B b1) {
  B b2 = b1;
}

// CHECK:    define linkonce_odr [[A:%.*]]* @_ZN12rdar138169401AaSERKS0_(
// CHECK:      [[THIS:%.*]] = load [[A]]**
// CHECK-NEXT: [[T0:%.*]] = getelementptr inbounds [[A]]* [[THIS]], i32 0, i32 1
// CHECK-NEXT: [[T1:%.*]] = bitcast [2 x i8]* [[T0]] to i16*
// CHECK-NEXT: [[OTHER:%.*]] = load [[A]]**
// CHECK-NEXT: [[T2:%.*]] = getelementptr inbounds [[A]]* [[OTHER]], i32 0, i32 1
// CHECK-NEXT: [[T3:%.*]] = bitcast [2 x i8]* [[T2]] to i16*
// CHECK-NEXT: [[T4:%.*]] = bitcast i16* [[T1]] to i8*
// CHECK-NEXT: [[T5:%.*]] = bitcast i16* [[T3]] to i8*
// CHECK-NEXT: call void @llvm.memcpy.p0i8.p0i8.i64(i8* [[T4]], i8* [[T5]], i64 8, i32 8, i1 false)
// CHECK-NEXT: ret [[A]]* [[THIS]]

// CHECK-LABEL:    define linkonce_odr void @_ZN12rdar138169401AC2ERKS0_(
// CHECK:      [[THIS:%.*]] = load [[A]]**
// CHECK-NEXT: [[T0:%.*]] = bitcast [[A]]* [[THIS]] to i8***
// CHECK-NEXT: store i8** getelementptr inbounds ([4 x i8*]* @_ZTVN12rdar138169401AE, i64 0, i64 2), i8*** [[T0]]
// CHECK-NEXT: [[T0:%.*]] = getelementptr inbounds [[A]]* [[THIS]], i32 0, i32 1
// CHECK-NEXT: [[T1:%.*]] = bitcast [2 x i8]* [[T0]] to i16*
// CHECK-NEXT: [[OTHER:%.*]] = load [[A]]**
// CHECK-NEXT: [[T2:%.*]] = getelementptr inbounds [[A]]* [[OTHER]], i32 0, i32 1
// CHECK-NEXT: [[T3:%.*]] = bitcast [2 x i8]* [[T2]] to i16*
// CHECK-NEXT: [[T4:%.*]] = bitcast i16* [[T1]] to i8*
// CHECK-NEXT: [[T5:%.*]] = bitcast i16* [[T3]] to i8*
// CHECK-NEXT: call void @llvm.memcpy.p0i8.p0i8.i64(i8* [[T4]], i8* [[T5]], i64 8, i32 8, i1 false)
// CHECK-NEXT: ret void

// CHECK-LABEL: define linkonce_odr void @_ZN6PR66281BC2ERKS0_(%"struct.PR6628::B"* %this, %"struct.PR6628::B"*) unnamed_addr
// CHECK: call void @_ZN6PR66281TC1Ev
// CHECK: call void @_ZN6PR66281TC1Ev
// CHECK: call void @_ZN6PR66281AC2ERKS0_RKNS_1TES5_
// CHECK: call void @_ZN6PR66281TD1Ev
// CHECK: call void @_ZN6PR66281TD1Ev
// CHECK: call void @_ZN6PR66281TC1Ev
// CHECK: call void @_ZN6PR66281TC1Ev
// CHECK: call void @_ZN6PR66281AC1ERKS0_RKNS_1TES5_
// CHECK: call void @_ZN6PR66281TD1Ev
// CHECK: call void @_ZN6PR66281TD1Ev
// CHECK: call void @_ZN6PR66281TC1Ev
// CHECK: call void @_ZN6PR66281TC1Ev
// CHECK: call void @_ZN6PR66281AC1ERKS0_RKNS_1TES5_
// CHECK: call void @_ZN6PR66281TD1Ev
// CHECK: call void @_ZN6PR66281TD1Ev
}

// rdar://13816940
// Test above because things get weirdly re-ordered.
namespace rdar13816940 {
  struct A {
    virtual ~A();
    unsigned short a : 1;
    unsigned short : 15;
    unsigned other;
  };

  void test(A &a) {
    A x = a; // force copy constructor into existence
    x = a; // also force the copy assignment operator
  }
}