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1 // RUN: %clang_cc1 -triple x86_64-apple-darwin10 %s -emit-llvm -o - | FileCheck %s
2 
t1(int * a)3 void t1(int *a) {
4   delete a;
5 }
6 
7 struct S {
8   int a;
9 };
10 
11 // POD types.
t3(S * s)12 void t3(S *s) {
13   delete s;
14 }
15 
16 // Non-POD
17 struct T {
18   ~T();
19   int a;
20 };
21 
22 // CHECK-LABEL: define void @_Z2t4P1T
t4(T * t)23 void 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
31 template <typename T>
32 class A {
33   public: operator T *() const;
34 };
35 
f()36 void f() {
37   A<char*> a;
38 
39   delete a;
40 }
41 
42 namespace test0 {
43   struct A {
44     void *operator new(__SIZE_TYPE__ sz);
operator deletetest0::A45     void operator delete(void *p) { ::operator delete(p); }
~Atest0::A46     ~A() {}
47   };
48 
49   // CHECK-LABEL: define void @_ZN5test04testEPNS_1AE(
test(A * a)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-LABEL: define linkonce_odr void @_ZN5test01AD1Ev(%"struct.test0::A"* %this) unnamed_addr
58   // CHECK-LABEL: define linkonce_odr void @_ZN5test01AdlEPv
59 }
60 
61 namespace test1 {
62   struct A {
63     int x;
64     ~A();
65   };
66 
67   // CHECK-LABEL: define void @_ZN5test14testEPA10_A20_NS_1AE(
test(A (* arr)[10][20])68   void test(A (*arr)[10][20]) {
69     delete [] arr;
70     // CHECK:      icmp eq [10 x [20 x [[A:%.*]]]]* [[PTR:%.*]], null
71     // CHECK-NEXT: br i1
72 
73     // CHECK:      [[BEGIN:%.*]] = getelementptr inbounds [10 x [20 x [[A]]]], [10 x [20 x [[A]]]]* [[PTR]], i32 0, i32 0, i32 0
74     // CHECK-NEXT: [[T0:%.*]] = bitcast [[A]]* [[BEGIN]] to i8*
75     // CHECK-NEXT: [[ALLOC:%.*]] = getelementptr inbounds i8, i8* [[T0]], i64 -8
76     // CHECK-NEXT: [[T1:%.*]] = bitcast i8* [[ALLOC]] to i64*
77     // CHECK-NEXT: [[COUNT:%.*]] = load i64, i64* [[T1]]
78     // CHECK:      [[END:%.*]] = getelementptr inbounds [[A]], [[A]]* [[BEGIN]], i64 [[COUNT]]
79     // CHECK-NEXT: [[ISEMPTY:%.*]] = icmp eq [[A]]* [[BEGIN]], [[END]]
80     // CHECK-NEXT: br i1 [[ISEMPTY]],
81     // CHECK:      [[PAST:%.*]] = phi [[A]]* [ [[END]], {{%.*}} ], [ [[CUR:%.*]], {{%.*}} ]
82     // CHECK-NEXT: [[CUR:%.*]] = getelementptr inbounds [[A]], [[A]]* [[PAST]], i64 -1
83     // CHECK-NEXT: call void @_ZN5test11AD1Ev([[A]]* [[CUR]])
84     // CHECK-NEXT: [[ISDONE:%.*]] = icmp eq [[A]]* [[CUR]], [[BEGIN]]
85     // CHECK-NEXT: br i1 [[ISDONE]]
86     // CHECK:      call void @_ZdaPv(i8* [[ALLOC]])
87   }
88 }
89 
90 namespace test2 {
91   // CHECK-LABEL: define void @_ZN5test21fEPb
f(bool * b)92   void f(bool *b) {
93     // CHECK: call void @_ZdlPv(i8*
94     delete b;
95     // CHECK: call void @_ZdaPv(i8*
96     delete [] b;
97   }
98 }
99 
100 namespace test3 {
f(int a[10][20])101   void f(int a[10][20]) {
102     // CHECK: call void @_ZdaPv(i8*
103     delete a;
104   }
105 }
106 
107 namespace test4 {
108   // PR10341: ::delete with a virtual destructor
109   struct X {
110     virtual ~X();
111     void operator delete (void *);
112   };
113 
114   // CHECK-LABEL: define void @_ZN5test421global_delete_virtualEPNS_1XE
global_delete_virtual(X * xp)115   void global_delete_virtual(X *xp) {
116     //   Load the offset-to-top from the vtable and apply it.
117     //   This has to be done first because the dtor can mess it up.
118     // CHECK:      [[T0:%.*]] = bitcast [[X:%.*]]* [[XP:%.*]] to i64**
119     // CHECK-NEXT: [[VTABLE:%.*]] = load i64*, i64** [[T0]]
120     // CHECK-NEXT: [[T0:%.*]] = getelementptr inbounds i64, i64* [[VTABLE]], i64 -2
121     // CHECK-NEXT: [[OFFSET:%.*]] = load i64, i64* [[T0]], align 8
122     // CHECK-NEXT: [[T0:%.*]] = bitcast [[X]]* [[XP]] to i8*
123     // CHECK-NEXT: [[ALLOCATED:%.*]] = getelementptr inbounds i8, i8* [[T0]], i64 [[OFFSET]]
124     //   Load the complete-object destructor (not the deleting destructor)
125     //   and call it.
126     // CHECK-NEXT: [[T0:%.*]] = bitcast [[X:%.*]]* [[XP:%.*]] to void ([[X]]*)***
127     // CHECK-NEXT: [[VTABLE:%.*]] = load void ([[X]]*)**, void ([[X]]*)*** [[T0]]
128     // CHECK-NEXT: [[T0:%.*]] = getelementptr inbounds void ([[X]]*)*, void ([[X]]*)** [[VTABLE]], i64 0
129     // CHECK-NEXT: [[DTOR:%.*]] = load void ([[X]]*)*, void ([[X]]*)** [[T0]]
130     // CHECK-NEXT: call void [[DTOR]]([[X]]* [[OBJ:%.*]])
131     //   Call the global operator delete.
132     // CHECK-NEXT: call void @_ZdlPv(i8* [[ALLOCATED]]) [[NUW:#[0-9]+]]
133     ::delete xp;
134   }
135 }
136 
137 namespace test5 {
138   struct Incomplete;
139   // CHECK-LABEL: define void @_ZN5test523array_delete_incompleteEPNS_10IncompleteES1_
array_delete_incomplete(Incomplete * p1,Incomplete * p2)140   void array_delete_incomplete(Incomplete *p1, Incomplete *p2) {
141     // CHECK: call void @_ZdlPv
142     delete p1;
143     // CHECK: call void @_ZdaPv
144     delete [] p2;
145   }
146 }
147 
148 // CHECK: attributes [[NUW]] = {{[{].*}} nounwind {{.*[}]}}
149