delete.cpp revision a8b20f70d562cdc2679f82d409832b79fc415277 
1// RUN: %clang_cc1 -triple x86_64-apple-darwin10 %s -emit-llvm -o - | FileCheck %s
2
3void t1(int *a) {
4  delete a;
5}
6
7struct S {
8  int a;
9};
10
11// POD types.
12void t3(S *s) {
13  delete s;
14}
15
16// Non-POD
17struct T {
18  ~T();
19  int a;
20};
21
22// CHECK: define void @_Z2t4P1T
23void t4(T *t) {
24  // CHECK: call void @_ZN1TD1Ev
25  // CHECK-NEXT: bitcast
26  // CHECK-NEXT: call void @_ZdlPv
27  delete t;
28}
29
30// PR5102
31template <typename T>
32class A {
33  operator T *() const;
34};
35
36void f() {
37  A<char*> a;
38
39  delete a;
40}
41
42namespace test0 {
43  struct A {
44    void *operator new(__SIZE_TYPE__ sz);
45    void operator delete(void *p) { ::operator delete(p); }
46    ~A() {}
47  };
48
49  // CHECK: define void @_ZN5test04testEPNS_1AE(
50  void test(A *a) {
51    // CHECK: call void @_ZN5test01AD1Ev
52    // CHECK-NEXT: bitcast
53    // CHECK-NEXT: call void @_ZN5test01AdlEPv
54    delete a;
55  }
56
57  // CHECK: define linkonce_odr void @_ZN5test01AD1Ev(%"struct.test0::A"* %this) unnamed_addr
58  // CHECK: define linkonce_odr void @_ZN5test01AdlEPv
59}
60
61namespace test1 {
62  struct A {
63    int x;
64    ~A();
65  };
66
67  // CHECK: define void @_ZN5test14testEPA10_A20_NS_1AE(
68  void test(A (*arr)[10][20]) {
69    delete [] arr;
70    // CHECK:      icmp eq [10 x [20 x [[S:%.*]]]]* [[PTR:%.*]], null
71    // CHECK-NEXT: br i1
72
73    // CHECK:      [[ARR:%.*]] = getelementptr inbounds [10 x [20 x [[S]]]]* [[PTR]], i32 0, i32 0, i32 0
74    // CHECK-NEXT: bitcast {{.*}} to i8*
75    // CHECK-NEXT: [[ALLOC:%.*]] = getelementptr inbounds {{.*}}, i64 -8
76    // CHECK-NEXT: bitcast i8* [[ALLOC]] to i64*
77    // CHECK-NEXT: load
78    // CHECK-NEXT: store i64 {{.*}}, i64* [[IDX:%.*]]
79
80    // CHECK:      load i64* [[IDX]]
81    // CHECK-NEXT: icmp ne {{.*}}, 0
82    // CHECK-NEXT: br i1
83
84    // CHECK:      load i64* [[IDX]]
85    // CHECK-NEXT: [[I:%.*]] = sub i64 {{.*}}, 1
86    // CHECK-NEXT: getelementptr inbounds [[S]]* [[ARR]], i64 [[I]]
87    // CHECK-NEXT: call void @_ZN5test11AD1Ev(
88    // CHECK-NEXT: br label
89
90    // CHECK:      load i64* [[IDX]]
91    // CHECK-NEXT: sub
92    // CHECK-NEXT: store {{.*}}, i64* [[IDX]]
93    // CHECK-NEXT: br label
94
95    // CHECK:      call void @_ZdaPv(i8* [[ALLOC]])
96  }
97}
98
99namespace test2 {
100  // CHECK: define void @_ZN5test21fEPb
101  void f(bool *b) {
102    // CHECK: call void @_ZdlPv(i8*
103    delete b;
104    // CHECK: call void @_ZdaPv(i8*
105    delete [] b;
106  }
107}
108
109namespace test3 {
110  void f(int a[10][20]) {
111    // CHECK: call void @_ZdaPv(i8*
112    delete a;
113  }
114}
115
116namespace test4 {
117  // PR10341: ::delete with a virtual destructor
118  struct X {
119    virtual ~X();
120    void operator delete (void *);
121  };
122
123  // CHECK: define void @_ZN5test421global_delete_virtualEPNS_1XE
124  void global_delete_virtual(X *xp) {
125    // CHECK: [[VTABLE:%.*]] = load void ([[X:%.*]])***
126    // CHECK-NEXT: [[VFN:%.*]] = getelementptr inbounds void ([[X]])** [[VTABLE]], i64 0
127    // CHECK-NEXT: [[VFNPTR:%.*]] = load void ([[X]])** [[VFN]]
128    // CHECK-NEXT: call void [[VFNPTR]]([[X]] [[OBJ:%.*]])
129    // CHECK-NEXT: [[OBJVOID:%.*]] = bitcast [[X]] [[OBJ]] to i8*
130    // CHECK-NEXT: call void @_ZdlPv(i8* [[OBJVOID]]) nounwind
131    ::delete xp;
132  }
133}
134