clang/test/CodeGenCXX/copy-assign-synthesis-1.cpp

   1 // RUN: %clang_cc1 -triple x86_64-apple-darwin -std=c++11 -emit-llvm %s -o - | \
   2 // RUN: FileCheck %s
   3 // RUN: %clang_cc1 -triple i386-apple-darwin -std=c++11 -emit-llvm %s -o - | \
   4 // RUN: FileCheck %s
   5
   6 extern "C" int printf(...);
   7
   8 struct B {
   9   B() : B1(3.14), B2(3.15), auB2(3.16)  {}
  10   float B1;
  11   float B2;
  12   void pr() {
  13     printf("B1 = %f B2 = %f auB1 = %f\n", B1, B2, auB1);
  14   }
  15
  16   B& operator=(const B& arg) { B1 = arg.B1; B2 = arg.B2;
  17                                auB1 = arg.auB1; return *this; }
  18   union {
  19     float auB1;
  20     float auB2;
  21   };
  22 };
  23
  24 struct M {
  25   M() : M1(10), M2(11) , auM1(12) {}
  26   int M1;
  27   int M2;
  28   void pr() {
  29     printf("M1 = %d M2 = %d auM1 = %d auM2 = %d\n", M1, M2, auM1, auM2);
  30   }
  31   union {
  32     int auM1;
  33     int auM2;
  34   };
  35 };
  36
  37 struct N  : B {
  38   N() : N1(20), N2(21) {}
  39   int N1;
  40   int N2;
  41   void pr() {
  42     printf("N1 = %d N2 = %d\n", N1, N2);
  43     for (unsigned i = 0; i < 3; i++)
  44       for (unsigned j = 0; j < 2; j++)
  45         printf("arr_b[%d][%d] = %f\n", i,j,arr_b[i][j].B1);
  46     B::pr();
  47   }
  48   N& operator=(const N& arg) {
  49     N1 = arg.N1; N2 = arg.N2;
  50     for (unsigned i = 0; i < 3; i++)
  51       for (unsigned j = 0; j < 2; j++)
  52         arr_b[i][j] = arg.arr_b[i][j];
  53     return *this;
  54   }
  55   B arr_b[3][2];
  56 };
  57
  58 struct Q  : B {
  59   Q() : Q1(30), Q2(31) {}
  60   int Q1;
  61   int Q2;
  62   void pr() {
  63     printf("Q1 = %d Q2 = %d\n", Q1, Q2);
  64   }
  65 };
  66
  67
  68 struct X : M , N {
  69   X() : d(0.0), d1(1.1), d2(1.2), d3(1.3) {}
  70   double d;
  71   double d1;
  72   double d2;
  73   double d3;
  74   void pr() {
  75     printf("d = %f d1 = %f d2 = %f d3 = %f\n", d, d1,d2,d3);
  76     M::pr(); N::pr();
  77     q1.pr(); q2.pr();
  78   }
  79
  80  Q q1, q2;
  81 };
  82
  83
  84 X srcX;
  85 X dstX;
  86 X dstY;
  87
  88 int main() {
  89   dstY = dstX = srcX;
  90   srcX.pr();
  91   dstX.pr();
  92   dstY.pr();
  93 }
  94
  95 // CHECK: define linkonce_odr noundef nonnull align {{[0-9]+}} dereferenceable({{[0-9]+}}) ptr @_ZN1XaSERKS_