| 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 | |
| 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 | |
| 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 | |
| 76 | void f3(A *a, A &ar) { |
| 77 | (a->*pa)(); |
| 78 | (ar.*pa)(); |
| 79 | } |
| 80 | |
| 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 | |
| 95 | B1() : pmf(&A::foo), pa(&a) {} |
| 96 | bool operator()() const { return (pa->*pmf)(new int); } |
| 97 | }; |
| 98 | |
| 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 | |
| 122 | bool f(void (A::*f)()) { |
| 123 | return f && f; |
| 124 | } |
| 125 | } |
| 126 | |
| 127 | namespace PR5718 { |
| 128 | struct A { }; |
| 129 | |
| 130 | bool f(void (A::*f)(), void (A::*g)()) { |
| 131 | return f == g; |
| 132 | } |
| 133 | } |
| 134 | |
| 135 | namespace BoolMemberPointer { |
| 136 | struct A { }; |
| 137 | |
| 138 | bool f(void (A::*f)()) { |
| 139 | return !f; |
| 140 | } |
| 141 | |
| 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 | |
| 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 | }; |
| 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 | |
| 181 | void f() { |
| 182 | void (A::*pf)(bool) = &A::f; |
| 183 | } |
| 184 | } |
| 185 | |
| 186 | // PR7027 |
| 187 | namespace PR7027 { |
| 188 | struct X { void test( ); }; |
| 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}} |
| 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 |
| 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 | |