1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
|
// RUN: %clang_cc1 %s -emit-llvm -o - -triple=x86_64-unknown-unknown | FileCheck -check-prefix CODE-LP64 %s
// RUN: %clang_cc1 %s -emit-llvm -o - -triple=i386-unknown-unknown | FileCheck -check-prefix CODE-LP32 %s
// RUN: %clang_cc1 %s -emit-llvm -o - -triple=x86_64-unknown-unknown | FileCheck -check-prefix GLOBAL-LP64 %s
// RUN: %clang_cc1 %s -emit-llvm -o - -triple=i386-unknown-unknown | FileCheck -check-prefix GLOBAL-LP32 %s
// RUN: %clang_cc1 %s -emit-llvm -o - -triple=armv7-unknown-unknown | FileCheck -check-prefix GLOBAL-ARM %s
struct A { int a; void f(); virtual void vf1(); virtual void vf2(); };
struct B { int b; virtual void g(); };
struct C : B, A { };
void (A::*pa)();
void (A::*volatile vpa)();
void (B::*pb)();
void (C::*pc)();
// GLOBAL-LP64: @pa2 = global { i64, i64 } { i64 ptrtoint (void (%struct.A*)* @_ZN1A1fEv to i64), i64 0 }, align 8
void (A::*pa2)() = &A::f;
// GLOBAL-LP64: @pa3 = global { i64, i64 } { i64 1, i64 0 }, align 8
// GLOBAL-LP32: @pa3 = global { i32, i32 } { i32 1, i32 0 }, align 4
void (A::*pa3)() = &A::vf1;
// GLOBAL-LP64: @pa4 = global { i64, i64 } { i64 9, i64 0 }, align 8
// GLOBAL-LP32: @pa4 = global { i32, i32 } { i32 5, i32 0 }, align 4
void (A::*pa4)() = &A::vf2;
// GLOBAL-LP64: @pc2 = global { i64, i64 } { i64 ptrtoint (void (%struct.A*)* @_ZN1A1fEv to i64), i64 16 }, align 8
void (C::*pc2)() = &C::f;
// GLOBAL-LP64: @pc3 = global { i64, i64 } { i64 1, i64 0 }, align 8
void (A::*pc3)() = &A::vf1;
void f() {
// CODE-LP64: store { i64, i64 } zeroinitializer, { i64, i64 }* @pa
pa = 0;
// Is this okay? What are LLVM's volatile semantics for structs?
// CODE-LP64: store volatile { i64, i64 } zeroinitializer, { i64, i64 }* @vpa
vpa = 0;
// CODE-LP64: [[TMP:%.*]] = load { i64, i64 }* @pa, align 8
// CODE-LP64: [[TMPADJ:%.*]] = extractvalue { i64, i64 } [[TMP]], 1
// CODE-LP64: [[ADJ:%.*]] = add nsw i64 [[TMPADJ]], 16
// CODE-LP64: [[RES:%.*]] = insertvalue { i64, i64 } [[TMP]], i64 [[ADJ]], 1
// CODE-LP64: store { i64, i64 } [[RES]], { i64, i64 }* @pc, align 8
pc = pa;
// CODE-LP64: [[TMP:%.*]] = load { i64, i64 }* @pc, align 8
// CODE-LP64: [[TMPADJ:%.*]] = extractvalue { i64, i64 } [[TMP]], 1
// CODE-LP64: [[ADJ:%.*]] = sub nsw i64 [[TMPADJ]], 16
// CODE-LP64: [[RES:%.*]] = insertvalue { i64, i64 } [[TMP]], i64 [[ADJ]], 1
// CODE-LP64: store { i64, i64 } [[RES]], { i64, i64 }* @pa, align 8
pa = static_cast<void (A::*)()>(pc);
}
void f2() {
// CODE-LP64: store { i64, i64 } { i64 ptrtoint (void (%struct.A*)* @_ZN1A1fEv to i64), i64 0 }
void (A::*pa2)() = &A::f;
// CODE-LP64: store { i64, i64 } { i64 1, i64 0 }
// CODE-LP32: store { i32, i32 } { i32 1, i32 0 }
void (A::*pa3)() = &A::vf1;
// CODE-LP64: store { i64, i64 } { i64 9, i64 0 }
// CODE-LP32: store { i32, i32 } { i32 5, i32 0 }
void (A::*pa4)() = &A::vf2;
}
void f3(A *a, A &ar) {
(a->*pa)();
(ar.*pa)();
}
bool f4() {
return pa;
}
// PR5177
namespace PR5177 {
struct A {
bool foo(int*) const;
} a;
struct B1 {
bool (A::*pmf)(int*) const;
const A* pa;
B1() : pmf(&A::foo), pa(&a) {}
bool operator()() const { return (pa->*pmf)(new int); }
};
void bar(B1 b2) { while (b2()) ; }
}
// PR5138
namespace PR5138 {
struct foo {
virtual void bar(foo *);
};
extern "C" {
void baz(foo *);
}
void (foo::*ptr1)(void *) = (void (foo::*)(void *))&foo::bar;
void (*ptr2)(void *) = (void (*)(void *))&baz;
void (foo::*ptr3)(void) = (void (foo::*)(void))&foo::bar;
}
// PR5593
namespace PR5593 {
struct A { };
bool f(void (A::*f)()) {
return f && f;
}
}
namespace PR5718 {
struct A { };
bool f(void (A::*f)(), void (A::*g)()) {
return f == g;
}
}
namespace BoolMemberPointer {
struct A { };
bool f(void (A::*f)()) {
return !f;
}
bool g(void (A::*f)()) {
if (!!f)
return true;
return false;
}
}
// PR5940
namespace PR5940 {
class foo {
public:
virtual void baz(void);
};
void foo::baz(void) {
void (foo::*ptr)(void) = &foo::baz;
}
}
namespace MemberPointerImpCast {
struct A {
int x;
};
struct B : public A {
};
void f(B* obj, void (A::*method)()) {
(obj->*method)();
}
}
// PR6258
namespace PR6258 {
struct A {
void f(bool);
};
void (A::*pf)(bool) = &A::f;
void f() {
void (A::*pf)(bool) = &A::f;
}
}
// PR7027
namespace PR7027 {
struct X { void test( ); };
void testX() { &X::test; }
}
namespace test7 {
struct A { void foo(); virtual void vfoo(); };
struct B { void foo(); virtual void vfoo(); };
struct C : A, B { void foo(); virtual void vfoo(); };
// GLOBAL-ARM: @_ZN5test74ptr0E = global {{.*}} { i32 ptrtoint ({{.*}}* @_ZN5test71A3fooEv to i32), i32 0 }
// GLOBAL-ARM: @_ZN5test74ptr1E = global {{.*}} { i32 ptrtoint ({{.*}}* @_ZN5test71B3fooEv to i32), i32 8 }
// GLOBAL-ARM: @_ZN5test74ptr2E = global {{.*}} { i32 ptrtoint ({{.*}}* @_ZN5test71C3fooEv to i32), i32 0 }
// GLOBAL-ARM: @_ZN5test74ptr3E = global {{.*}} { i32 0, i32 1 }
// GLOBAL-ARM: @_ZN5test74ptr4E = global {{.*}} { i32 0, i32 9 }
// GLOBAL-ARM: @_ZN5test74ptr5E = global {{.*}} { i32 0, i32 1 }
void (C::*ptr0)() = &A::foo;
void (C::*ptr1)() = &B::foo;
void (C::*ptr2)() = &C::foo;
void (C::*ptr3)() = &A::vfoo;
void (C::*ptr4)() = &B::vfoo;
void (C::*ptr5)() = &C::vfoo;
}
namespace test8 {
struct X { };
typedef int (X::*pmf)(int);
// CHECK: {{define.*_ZN5test81fEv}}
pmf f() {
// CHECK: {{ret.*zeroinitializer}}
return pmf();
}
}
namespace test9 {
struct A {
void foo();
};
struct B : A {
void foo();
};
typedef void (A::*fooptr)();
struct S {
fooptr p;
};
// CODE-LP64: define void @_ZN5test94testEv(
// CODE-LP64: alloca i32
// CODE-LP64-NEXT: ret void
void test() {
int x;
static S array[] = { (fooptr) &B::foo };
}
}
// rdar://problem/10815683 - Verify that we can emit reinterprets of
// member pointers as constant initializers. For added trickiness,
// we also add some non-trivial adjustments.
namespace test10 {
struct A {
int nonEmpty;
void foo();
};
struct B : public A {
virtual void requireNonZeroAdjustment();
};
struct C {
int nonEmpty;
};
struct D : public C {
virtual void requireNonZeroAdjustment();
};
// It's not that the offsets are doubled on ARM, it's that they're left-shifted by 1.
// GLOBAL-LP64: @_ZN6test101aE = global { i64, i64 } { i64 ptrtoint (void (%"struct.test10::A"*)* @_ZN6test101A3fooEv to i64), i64 0 }, align 8
// GLOBAL-LP32: @_ZN6test101aE = global { i32, i32 } { i32 ptrtoint (void (%"struct.test10::A"*)* @_ZN6test101A3fooEv to i32), i32 0 }, align 4
// GLOBAL-ARM: @_ZN6test101aE = global { i32, i32 } { i32 ptrtoint (void (%"struct.test10::A"*)* @_ZN6test101A3fooEv to i32), i32 0 }, align 4
void (A::*a)() = &A::foo;
// GLOBAL-LP64: @_ZN6test101bE = global { i64, i64 } { i64 ptrtoint (void (%"struct.test10::A"*)* @_ZN6test101A3fooEv to i64), i64 8 }, align 8
// GLOBAL-LP32: @_ZN6test101bE = global { i32, i32 } { i32 ptrtoint (void (%"struct.test10::A"*)* @_ZN6test101A3fooEv to i32), i32 4 }, align 4
// GLOBAL-ARM: @_ZN6test101bE = global { i32, i32 } { i32 ptrtoint (void (%"struct.test10::A"*)* @_ZN6test101A3fooEv to i32), i32 8 }, align 4
void (B::*b)() = (void (B::*)()) &A::foo;
// GLOBAL-LP64: @_ZN6test101cE = global { i64, i64 } { i64 ptrtoint (void (%"struct.test10::A"*)* @_ZN6test101A3fooEv to i64), i64 8 }, align 8
// GLOBAL-LP32: @_ZN6test101cE = global { i32, i32 } { i32 ptrtoint (void (%"struct.test10::A"*)* @_ZN6test101A3fooEv to i32), i32 4 }, align 4
// GLOBAL-ARM: @_ZN6test101cE = global { i32, i32 } { i32 ptrtoint (void (%"struct.test10::A"*)* @_ZN6test101A3fooEv to i32), i32 8 }, align 4
void (C::*c)() = (void (C::*)()) (void (B::*)()) &A::foo;
// GLOBAL-LP64: @_ZN6test101dE = global { i64, i64 } { i64 ptrtoint (void (%"struct.test10::A"*)* @_ZN6test101A3fooEv to i64), i64 16 }, align 8
// GLOBAL-LP32: @_ZN6test101dE = global { i32, i32 } { i32 ptrtoint (void (%"struct.test10::A"*)* @_ZN6test101A3fooEv to i32), i32 8 }, align 4
// GLOBAL-ARM: @_ZN6test101dE = global { i32, i32 } { i32 ptrtoint (void (%"struct.test10::A"*)* @_ZN6test101A3fooEv to i32), i32 16 }, align 4
void (D::*d)() = (void (C::*)()) (void (B::*)()) &A::foo;
}
namespace test11 {
struct A { virtual void a(); };
struct B : A {};
struct C : B { virtual void a(); };
void (C::*x)() = &C::a;
// GLOBAL-LP64: @_ZN6test111xE = global { i64, i64 } { i64 1, i64 0 }
// GLOBAL-LP32: @_ZN6test111xE = global { i32, i32 } { i32 1, i32 0 }
// GLOBAL-ARM: @_ZN6test111xE = global { i32, i32 } { i32 0, i32 1 }
}
|
