1 // RUN: %clang_cc1 %s -emit-llvm -o - -triple=x86_64-unknown-unknown | FileCheck -check-prefix CODE-LP64 %s
2 // RUN: %clang_cc1 %s -emit-llvm -o - -triple=i386-unknown-unknown | FileCheck -check-prefix CODE-LP32 %s
3 // RUN: %clang_cc1 %s -emit-llvm -o - -triple=x86_64-unknown-unknown | FileCheck -check-prefix GLOBAL-LP64 %s
4 // RUN: %clang_cc1 %s -emit-llvm -o - -triple=i386-unknown-unknown | FileCheck -check-prefix GLOBAL-LP32 %s
5 // RUN: %clang_cc1 %s -emit-llvm -o - -triple=armv7-unknown-unknown | FileCheck -check-prefix GLOBAL-ARM %s
6
7 // PNaCl uses the same representation of method pointers as ARM.
8 // RUN: %clang_cc1 %s -emit-llvm -o - -triple=le32-unknown-nacl | FileCheck -check-prefix GLOBAL-ARM %s
9 // MIPS uses the same representation of method pointers as ARM.
10 // RUN: %clang_cc1 %s -emit-llvm -o - -triple=mips-unknown-linux-gnu | FileCheck -check-prefix GLOBAL-ARM %s
11 // WebAssembly uses the same representation of method pointers as ARM.
12 // RUN: %clang_cc1 %s -emit-llvm -o - -triple=wasm32-unknown-unknown | FileCheck -check-prefix GLOBAL-ARM %s
13
14 struct A { int a; void f(); virtual void vf1(); virtual void vf2(); };
15 struct B { int b; virtual void g(); };
16 struct C : B, A { };
17
18 void (A::*pa)();
19 void (A::*volatile vpa)();
20 void (B::*pb)();
21 void (C::*pc)();
22
23 // GLOBAL-LP64: @pa2 = global { i64, i64 } { i64 ptrtoint (void (%struct.A*)* @_ZN1A1fEv to i64), i64 0 }, align 8
24 void (A::*pa2)() = &A::f;
25
26 // GLOBAL-LP64: @pa3 = global { i64, i64 } { i64 1, i64 0 }, align 8
27 // GLOBAL-LP32: @pa3 = global { i32, i32 } { i32 1, i32 0 }, align 4
28 void (A::*pa3)() = &A::vf1;
29
30 // GLOBAL-LP64: @pa4 = global { i64, i64 } { i64 9, i64 0 }, align 8
31 // GLOBAL-LP32: @pa4 = global { i32, i32 } { i32 5, i32 0 }, align 4
32 void (A::*pa4)() = &A::vf2;
33
34 // GLOBAL-LP64: @pc2 = global { i64, i64 } { i64 ptrtoint (void (%struct.A*)* @_ZN1A1fEv to i64), i64 16 }, align 8
35 void (C::*pc2)() = &C::f;
36
37 // GLOBAL-LP64: @pc3 = global { i64, i64 } { i64 1, i64 0 }, align 8
38 void (A::*pc3)() = &A::vf1;
39
f()40 void f() {
41 // CODE-LP64: store { i64, i64 } zeroinitializer, { i64, i64 }* @pa
42 pa = 0;
43
44 // Is this okay? What are LLVM's volatile semantics for structs?
45 // CODE-LP64: store volatile { i64, i64 } zeroinitializer, { i64, i64 }* @vpa
46 vpa = 0;
47
48 // CODE-LP64: [[TMP:%.*]] = load { i64, i64 }, { i64, i64 }* @pa, align 8
49 // CODE-LP64: [[TMPADJ:%.*]] = extractvalue { i64, i64 } [[TMP]], 1
50 // CODE-LP64: [[ADJ:%.*]] = add nsw i64 [[TMPADJ]], 16
51 // CODE-LP64: [[RES:%.*]] = insertvalue { i64, i64 } [[TMP]], i64 [[ADJ]], 1
52 // CODE-LP64: store { i64, i64 } [[RES]], { i64, i64 }* @pc, align 8
53 pc = pa;
54
55 // CODE-LP64: [[TMP:%.*]] = load { i64, i64 }, { i64, i64 }* @pc, align 8
56 // CODE-LP64: [[TMPADJ:%.*]] = extractvalue { i64, i64 } [[TMP]], 1
57 // CODE-LP64: [[ADJ:%.*]] = sub nsw i64 [[TMPADJ]], 16
58 // CODE-LP64: [[RES:%.*]] = insertvalue { i64, i64 } [[TMP]], i64 [[ADJ]], 1
59 // CODE-LP64: store { i64, i64 } [[RES]], { i64, i64 }* @pa, align 8
60 pa = static_cast<void (A::*)()>(pc);
61 }
62
f2()63 void f2() {
64 // CODE-LP64: store { i64, i64 } { i64 ptrtoint (void (%struct.A*)* @_ZN1A1fEv to i64), i64 0 }
65 void (A::*pa2)() = &A::f;
66
67 // CODE-LP64: store { i64, i64 } { i64 1, i64 0 }
68 // CODE-LP32: store { i32, i32 } { i32 1, i32 0 }
69 void (A::*pa3)() = &A::vf1;
70
71 // CODE-LP64: store { i64, i64 } { i64 9, i64 0 }
72 // CODE-LP32: store { i32, i32 } { i32 5, i32 0 }
73 void (A::*pa4)() = &A::vf2;
74 }
75
f3(A * a,A & ar)76 void f3(A *a, A &ar) {
77 (a->*pa)();
78 (ar.*pa)();
79 }
80
f4()81 bool f4() {
82 return pa;
83 }
84
85 // PR5177
86 namespace PR5177 {
87 struct A {
88 bool foo(int*) const;
89 } a;
90
91 struct B1 {
92 bool (A::*pmf)(int*) const;
93 const A* pa;
94
B1PR5177::B195 B1() : pmf(&A::foo), pa(&a) {}
operator ()PR5177::B196 bool operator()() const { return (pa->*pmf)(new int); }
97 };
98
bar(B1 b2)99 void bar(B1 b2) { while (b2()) ; }
100 }
101
102 // PR5138
103 namespace PR5138 {
104 struct foo {
105 virtual void bar(foo *);
106 };
107
108 extern "C" {
109 void baz(foo *);
110 }
111
112 void (foo::*ptr1)(void *) = (void (foo::*)(void *))&foo::bar;
113 void (*ptr2)(void *) = (void (*)(void *))&baz;
114
115 void (foo::*ptr3)(void) = (void (foo::*)(void))&foo::bar;
116 }
117
118 // PR5593
119 namespace PR5593 {
120 struct A { };
121
f(void (A::* f)())122 bool f(void (A::*f)()) {
123 return f && f;
124 }
125 }
126
127 namespace PR5718 {
128 struct A { };
129
f(void (A::* f)(),void (A::* g)())130 bool f(void (A::*f)(), void (A::*g)()) {
131 return f == g;
132 }
133 }
134
135 namespace BoolMemberPointer {
136 struct A { };
137
f(void (A::* f)())138 bool f(void (A::*f)()) {
139 return !f;
140 }
141
g(void (A::* f)())142 bool g(void (A::*f)()) {
143 if (!!f)
144 return true;
145 return false;
146 }
147 }
148
149 // PR5940
150 namespace PR5940 {
151 class foo {
152 public:
153 virtual void baz(void);
154 };
155
baz(void)156 void foo::baz(void) {
157 void (foo::*ptr)(void) = &foo::baz;
158 }
159 }
160
161 namespace MemberPointerImpCast {
162 struct A {
163 int x;
164 };
165 struct B : public A {
166 };
f(B * obj,void (A::* method)())167 void f(B* obj, void (A::*method)()) {
168 (obj->*method)();
169 }
170 }
171
172 // PR6258
173 namespace PR6258 {
174
175 struct A {
176 void f(bool);
177 };
178
179 void (A::*pf)(bool) = &A::f;
180
f()181 void f() {
182 void (A::*pf)(bool) = &A::f;
183 }
184 }
185
186 // PR7027
187 namespace PR7027 {
188 struct X { void test( ); };
testX()189 void testX() { &X::test; }
190 }
191
192 namespace test7 {
193 struct A { void foo(); virtual void vfoo(); };
194 struct B { void foo(); virtual void vfoo(); };
195 struct C : A, B { void foo(); virtual void vfoo(); };
196
197 // GLOBAL-ARM: @_ZN5test74ptr0E = global {{.*}} { i32 ptrtoint ({{.*}}* @_ZN5test71A3fooEv to i32), i32 0 }
198 // GLOBAL-ARM: @_ZN5test74ptr1E = global {{.*}} { i32 ptrtoint ({{.*}}* @_ZN5test71B3fooEv to i32), i32 8 }
199 // GLOBAL-ARM: @_ZN5test74ptr2E = global {{.*}} { i32 ptrtoint ({{.*}}* @_ZN5test71C3fooEv to i32), i32 0 }
200 // GLOBAL-ARM: @_ZN5test74ptr3E = global {{.*}} { i32 0, i32 1 }
201 // GLOBAL-ARM: @_ZN5test74ptr4E = global {{.*}} { i32 0, i32 9 }
202 // GLOBAL-ARM: @_ZN5test74ptr5E = global {{.*}} { i32 0, i32 1 }
203 void (C::*ptr0)() = &A::foo;
204 void (C::*ptr1)() = &B::foo;
205 void (C::*ptr2)() = &C::foo;
206 void (C::*ptr3)() = &A::vfoo;
207 void (C::*ptr4)() = &B::vfoo;
208 void (C::*ptr5)() = &C::vfoo;
209 }
210
211 namespace test8 {
212 struct X { };
213 typedef int (X::*pmf)(int);
214
215 // CHECK: {{define.*_ZN5test81fEv}}
f()216 pmf f() {
217 // CHECK: {{ret.*zeroinitializer}}
218 return pmf();
219 }
220 }
221
222 namespace test9 {
223 struct A {
224 void foo();
225 };
226 struct B : A {
227 void foo();
228 };
229
230 typedef void (A::*fooptr)();
231
232 struct S {
233 fooptr p;
234 };
235
236 // CODE-LP64-LABEL: define void @_ZN5test94testEv(
237 // CODE-LP64: alloca i32
238 // CODE-LP64-NEXT: ret void
test()239 void test() {
240 int x;
241 static S array[] = { (fooptr) &B::foo };
242 }
243 }
244
245 // rdar://problem/10815683 - Verify that we can emit reinterprets of
246 // member pointers as constant initializers. For added trickiness,
247 // we also add some non-trivial adjustments.
248 namespace test10 {
249 struct A {
250 int nonEmpty;
251 void foo();
252 };
253 struct B : public A {
254 virtual void requireNonZeroAdjustment();
255 };
256 struct C {
257 int nonEmpty;
258 };
259 struct D : public C {
260 virtual void requireNonZeroAdjustment();
261 };
262
263
264 // It's not that the offsets are doubled on ARM, it's that they're left-shifted by 1.
265
266 // GLOBAL-LP64: @_ZN6test101aE = global { i64, i64 } { i64 ptrtoint (void (%"struct.test10::A"*)* @_ZN6test101A3fooEv to i64), i64 0 }, align 8
267 // GLOBAL-LP32: @_ZN6test101aE = global { i32, i32 } { i32 ptrtoint (void (%"struct.test10::A"*)* @_ZN6test101A3fooEv to i32), i32 0 }, align 4
268 // GLOBAL-ARM: @_ZN6test101aE = global { i32, i32 } { i32 ptrtoint (void (%"struct.test10::A"*)* @_ZN6test101A3fooEv to i32), i32 0 }, align 4
269 void (A::*a)() = &A::foo;
270
271 // GLOBAL-LP64: @_ZN6test101bE = global { i64, i64 } { i64 ptrtoint (void (%"struct.test10::A"*)* @_ZN6test101A3fooEv to i64), i64 8 }, align 8
272 // GLOBAL-LP32: @_ZN6test101bE = global { i32, i32 } { i32 ptrtoint (void (%"struct.test10::A"*)* @_ZN6test101A3fooEv to i32), i32 4 }, align 4
273 // GLOBAL-ARM: @_ZN6test101bE = global { i32, i32 } { i32 ptrtoint (void (%"struct.test10::A"*)* @_ZN6test101A3fooEv to i32), i32 8 }, align 4
274 void (B::*b)() = (void (B::*)()) &A::foo;
275
276 // GLOBAL-LP64: @_ZN6test101cE = global { i64, i64 } { i64 ptrtoint (void (%"struct.test10::A"*)* @_ZN6test101A3fooEv to i64), i64 8 }, align 8
277 // GLOBAL-LP32: @_ZN6test101cE = global { i32, i32 } { i32 ptrtoint (void (%"struct.test10::A"*)* @_ZN6test101A3fooEv to i32), i32 4 }, align 4
278 // GLOBAL-ARM: @_ZN6test101cE = global { i32, i32 } { i32 ptrtoint (void (%"struct.test10::A"*)* @_ZN6test101A3fooEv to i32), i32 8 }, align 4
279 void (C::*c)() = (void (C::*)()) (void (B::*)()) &A::foo;
280
281 // GLOBAL-LP64: @_ZN6test101dE = global { i64, i64 } { i64 ptrtoint (void (%"struct.test10::A"*)* @_ZN6test101A3fooEv to i64), i64 16 }, align 8
282 // GLOBAL-LP32: @_ZN6test101dE = global { i32, i32 } { i32 ptrtoint (void (%"struct.test10::A"*)* @_ZN6test101A3fooEv to i32), i32 8 }, align 4
283 // GLOBAL-ARM: @_ZN6test101dE = global { i32, i32 } { i32 ptrtoint (void (%"struct.test10::A"*)* @_ZN6test101A3fooEv to i32), i32 16 }, align 4
284 void (D::*d)() = (void (C::*)()) (void (B::*)()) &A::foo;
285 }
286
287 namespace test11 {
288 struct A { virtual void a(); };
289 struct B : A {};
290 struct C : B { virtual void a(); };
291 void (C::*x)() = &C::a;
292
293 // GLOBAL-LP64: @_ZN6test111xE = global { i64, i64 } { i64 1, i64 0 }
294 // GLOBAL-LP32: @_ZN6test111xE = global { i32, i32 } { i32 1, i32 0 }
295 // GLOBAL-ARM: @_ZN6test111xE = global { i32, i32 } { i32 0, i32 1 }
296 }
297