clang/test/CodeGenCXX/cxx0x-delegating-ctors.cpp

   1 // RUN: %clang_cc1 -triple i386-unknown-unknown -emit-llvm -fexceptions -fcxx-exceptions -std=c++11 -o - %s | FileCheck %s
   2
   3 struct non_trivial {
   4   non_trivial();
   5   ~non_trivial() noexcept(false);
   6 };
   7 non_trivial::non_trivial() {}
   8 non_trivial::~non_trivial() noexcept(false) {}
   9
  10 // We use a virtual base to ensure that the constructor
  11 // delegation optimization (complete->base) can't be
  12 // performed.
  13 struct delegator {
  14   non_trivial n;
  15   delegator();
  16   delegator(int);
  17   delegator(char);
  18   delegator(bool);
  19 };
  20
  21 delegator::delegator() {
  22   throw 0;
  23 }
  24
  25
  26 delegator::delegator(bool)
  27 {}
  28
  29 // CHECK-LABEL: define {{.*}} @_ZN9delegatorC2Ec
  30 // CHECK: {{.*}} @_ZN9delegatorC2Eb
  31 // CHECK: void @__cxa_throw
  32 // CHECK: void @__clang_call_terminate
  33 // CHECK: {{.*}} @_ZN9delegatorD2Ev
  34
  35 // CHECK-LABEL: define {{.*}} @_ZN9delegatorC1Ec
  36 // CHECK: {{.*}} @_ZN9delegatorC1Eb
  37 // CHECK: void @__cxa_throw
  38 // CHECK: void @__clang_call_terminate
  39 // CHECK: {{.*}} @_ZN9delegatorD1Ev
  40 delegator::delegator(char)
  41   : delegator(true) {
  42   throw 0;
  43 }
  44
  45 // CHECK-LABEL: define {{.*}} @_ZN9delegatorC2Ei
  46 // CHECK: {{.*}} @_ZN9delegatorC2Ev
  47 // CHECK-NOT: void @_ZSt9terminatev
  48 // CHECK: ret
  49 // CHECK-NOT: void @_ZSt9terminatev
  50
  51 // CHECK-LABEL: define {{.*}} @_ZN9delegatorC1Ei
  52 // CHECK: {{.*}} @_ZN9delegatorC1Ev
  53 // CHECK-NOT: void @_ZSt9terminatev
  54 // CHECK: ret
  55 // CHECK-NOT: void @_ZSt9terminatev
  56 delegator::delegator(int)
  57   : delegator()
  58 {}
  59
  60 namespace PR12890 {
  61   class X {
  62     int x;
  63     X() = default;
  64     X(int);
  65   };
  66   X::X(int) : X() {}
  67 }
  68 // CHECK: define {{.*}} @_ZN7PR128901XC1Ei(ptr {{[^,]*}} %this, i32 noundef %0)
  69 // CHECK: call void @llvm.memset.p0.{{i32|i64}}(ptr align 4 {{.*}}, i8 0, {{i32|i64}} 4, i1 false)
  70
  71 namespace PR14588 {
  72   void other();
  73
  74   class Base {
  75   public:
  76     Base() { squawk(); }
  77     virtual ~Base() {}
  78
  79     virtual void squawk() { other(); }
  80   };
  81
  82
  83   class Foo : public virtual Base {
  84   public:
  85     Foo();
  86     Foo(const void * inVoid);
  87     virtual ~Foo() {}
  88
  89     virtual void squawk() { other(); }
  90   };
  91
  92   // CHECK-LABEL: define{{.*}} void @_ZN7PR145883FooC1Ev(ptr
  93   // CHECK: call void @_ZN7PR145883FooC1EPKv(
  94   // CHECK: invoke void @_ZN7PR145885otherEv()
  95   // CHECK: call void @_ZN7PR145883FooD1Ev
  96   // CHECK: resume
  97
  98   Foo::Foo() : Foo(__null) { other(); }
  99   Foo::Foo(const void *inVoid) {
 100     squawk();
 101   }
 102
 103 }