clang/test/CodeGenCXX/default-arg-temps.cpp

   1 // RUN: %clang_cc1 -std=c++11 -emit-llvm %s -o - -triple=x86_64-apple-darwin9 | FileCheck %s
   2
   3 struct T {
   4   T();
   5   ~T();
   6 };
   7
   8 void f(const T& t = T());
   9
  10 class X { // ...
  11 public:
  12         X();
  13         X(const X&, const T& t = T());
  14 };
  15
  16 // CHECK-LABEL: define{{.*}} void @_Z1gv()
  17 void g() {
  18   // CHECK:      call void @_ZN1TC1Ev(ptr {{[^,]*}} [[AGG1:%.*]])
  19   // CHECK-NEXT: call void @_Z1fRK1T(ptr noundef nonnull align {{[0-9]+}} dereferenceable({{[0-9]+}}) [[AGG1]])
  20   // CHECK-NEXT: call void @_ZN1TD1Ev(ptr {{[^,]*}} [[AGG1]])
  21   f();
  22
  23   // CHECK-NEXT: call void @_ZN1TC1Ev(ptr {{[^,]*}} [[AGG2:%.*]])
  24   // CHECK-NEXT: call void @_Z1fRK1T(ptr noundef nonnull align {{[0-9]+}} dereferenceable({{[0-9]+}}) [[AGG2]])
  25   // CHECK-NEXT: call void @_ZN1TD1Ev(ptr {{[^,]*}} [[AGG2]])
  26   f();
  27
  28   // CHECK-NEXT: call void @_ZN1XC1Ev(
  29   X a;
  30
  31   // CHECK-NEXT: call void @_ZN1TC1Ev(
  32   // CHECK-NEXT: call void @_ZN1XC1ERKS_RK1T(
  33   // CHECK-NEXT: call void @_ZN1TD1Ev(
  34   X b(a);
  35
  36   // CHECK-NEXT: call void @_ZN1TC1Ev(
  37   // CHECK-NEXT: call void @_ZN1XC1ERKS_RK1T(
  38   // CHECK-NEXT: call void @_ZN1TD1Ev(
  39   X c = a;
  40 }
  41
  42
  43 class obj{ int a; float b; double d; };
  44 // CHECK-LABEL: define{{.*}} void @_Z1hv()
  45 void h() {
  46   // CHECK: call void @llvm.memset.p0.i64(
  47   obj o = obj();
  48 }
  49
  50 // PR7028 - mostly this shouldn't crash
  51 namespace test1 {
  52   struct A { A(); };
  53   struct B { B(); ~B(); };
  54
  55   struct C {
  56     C(const B &file = B());
  57   };
  58   C::C(const B &file) {}
  59
  60   struct D {
  61     C c;
  62     A a;
  63
  64     // CHECK-LABEL: define linkonce_odr void @_ZN5test11DC2Ev(ptr {{[^,]*}} %this) unnamed_addr
  65     // CHECK:      call void @_ZN5test11BC1Ev(
  66     // CHECK-NEXT: call void @_ZN5test11CC1ERKNS_1BE(
  67     // CHECK-NEXT: call void @_ZN5test11BD1Ev(
  68     // CHECK:      call void @_ZN5test11AC1Ev(
  69     D() : c(), a() {}
  70   };
  71
  72   D d;
  73 }
  74
  75 namespace test2 {
  76   // CHECK:  define linkonce_odr void @_ZN5test21AIiED2Ev(
  77   template <typename T> struct A { A() {} ~A() {} };
  78   template <typename> void f(const A<int> & = {}) {}
  79   void g() { f<int>(); }
  80 }