| 1 | // RUN: %clang_cc1 -std=c++11 -fno-rtti -emit-llvm -triple=i386-pc-win32 %s -o - | FileCheck %s --check-prefix=CHECK32 |
| 2 | // RUN: %clang_cc1 -std=c++11 -fno-rtti -emit-llvm -triple=x86_64-pc-win32 %s -o - | FileCheck %s --check-prefix=CHECK64 |
| 3 | |
| 4 | struct S { |
| 5 | int x, y, z; |
| 6 | }; |
| 7 | |
| 8 | // U is not trivially copyable, and requires inalloca to pass by value. |
| 9 | struct U { |
| 10 | int u; |
| 11 | U(); |
| 12 | ~U(); |
| 13 | U(const U &); |
| 14 | }; |
| 15 | |
| 16 | struct B; |
| 17 | |
| 18 | struct C { |
| 19 | virtual void foo(); |
| 20 | virtual int bar(int, double); |
| 21 | virtual S baz(int); |
| 22 | virtual S qux(U); |
| 23 | virtual void thud(...); |
| 24 | virtual void (B::*plugh())(); |
| 25 | }; |
| 26 | |
| 27 | namespace { |
| 28 | struct D { |
| 29 | virtual void foo(); |
| 30 | }; |
| 31 | } |
| 32 | |
| 33 | void f() { |
| 34 | void (C::*ptr)(); |
| 35 | ptr = &C::foo; |
| 36 | ptr = &C::foo; // Don't crash trying to define the thunk twice :) |
| 37 | |
| 38 | int (C::*ptr2)(int, double); |
| 39 | ptr2 = &C::bar; |
| 40 | |
| 41 | S (C::*ptr3)(int); |
| 42 | ptr3 = &C::baz; |
| 43 | |
| 44 | void (D::*ptr4)(); |
| 45 | ptr4 = &D::foo; |
| 46 | |
| 47 | S (C::*ptr5)(U); |
| 48 | ptr5 = &C::qux; |
| 49 | |
| 50 | void (C::*ptr6)(...); |
| 51 | ptr6 = &C::thud; |
| 52 | |
| 53 | auto ptr7 = &C::plugh; |
| 54 | |
| 55 | |
| 56 | // CHECK32-LABEL: define dso_local void @"?f@@YAXXZ"() |
| 57 | // CHECK32: store i8* bitcast (void (%struct.C*, ...)* @"??_9C@@$BA@AE" to i8*), i8** %ptr |
| 58 | // CHECK32: store i8* bitcast (void (%struct.C*, ...)* @"??_9C@@$B3AE" to i8*), i8** %ptr2 |
| 59 | // CHECK32: store i8* bitcast (void (%struct.C*, ...)* @"??_9C@@$B7AE" to i8*), i8** %ptr3 |
| 60 | // CHECK32: store i8* bitcast (void (%"struct.(anonymous namespace)::D"*, ...)* @"??_9D@?A0x{{[^@]*}}@@$BA@AE" to i8*), i8** %ptr4 |
| 61 | // CHECK32: } |
| 62 | // |
| 63 | // CHECK64-LABEL: define dso_local void @"?f@@YAXXZ"() |
| 64 | // CHECK64: store i8* bitcast (void (%struct.C*, ...)* @"??_9C@@$BA@AA" to i8*), i8** %ptr |
| 65 | // CHECK64: store i8* bitcast (void (%struct.C*, ...)* @"??_9C@@$B7AA" to i8*), i8** %ptr2 |
| 66 | // CHECK64: store i8* bitcast (void (%struct.C*, ...)* @"??_9C@@$BBA@AA" to i8*), i8** %ptr3 |
| 67 | // CHECK64: store i8* bitcast (void (%"struct.(anonymous namespace)::D"*, ...)* @"??_9D@?A0x{{[^@]*}}@@$BA@AA" to i8*), i8** %ptr |
| 68 | // CHECK64: } |
| 69 | } |
| 70 | |
| 71 | |
| 72 | // Thunk for calling the 1st virtual function in C with no parameters. |
| 73 | // CHECK32-LABEL: define linkonce_odr x86_thiscallcc void @"??_9C@@$BA@AE"(%struct.C* %this, ...) |
| 74 | // CHECK32: #[[ATTR:[0-9]+]] |
| 75 | // CHECK32-NOT: unnamed_addr |
| 76 | // CHECK32: comdat |
| 77 | // CHECK32: [[VPTR:%.*]] = getelementptr inbounds void (%struct.C*, ...)*, void (%struct.C*, ...)** %{{.*}}, i64 0 |
| 78 | // CHECK32: [[CALLEE:%.*]] = load void (%struct.C*, ...)*, void (%struct.C*, ...)** [[VPTR]] |
| 79 | // CHECK32: musttail call x86_thiscallcc void (%struct.C*, ...) [[CALLEE]](%struct.C* %{{.*}}, ...) |
| 80 | // CHECK32-NEXT: ret void |
| 81 | // CHECK32: } |
| 82 | // |
| 83 | // CHECK64-LABEL: define linkonce_odr void @"??_9C@@$BA@AA"(%struct.C* %this, ...) |
| 84 | // CHECK64: #[[ATTR:[0-9]+]] |
| 85 | // CHECK64-NOT: unnamed_addr |
| 86 | // CHECK64: comdat |
| 87 | // CHECK64: [[VPTR:%.*]] = getelementptr inbounds void (%struct.C*, ...)*, void (%struct.C*, ...)** %{{.*}}, i64 0 |
| 88 | // CHECK64: [[CALLEE:%.*]] = load void (%struct.C*, ...)*, void (%struct.C*, ...)** [[VPTR]] |
| 89 | // CHECK64: musttail call void (%struct.C*, ...) [[CALLEE]](%struct.C* %{{.*}}, ...) |
| 90 | // CHECK64-NEXT: ret void |
| 91 | // CHECK64: } |
| 92 | |
| 93 | // Thunk for calling the 2nd virtual function in C, taking int and double as parameters, returning int. |
| 94 | // CHECK32-LABEL: define linkonce_odr x86_thiscallcc void @"??_9C@@$B3AE"(%struct.C* %this, ...) |
| 95 | // CHECK32: #[[ATTR]] comdat |
| 96 | // CHECK32: [[VPTR:%.*]] = getelementptr inbounds void (%struct.C*, ...)*, void (%struct.C*, ...)** %{{.*}}, i64 1 |
| 97 | // CHECK32: [[CALLEE:%.*]] = load void (%struct.C*, ...)*, void (%struct.C*, ...)** [[VPTR]] |
| 98 | // CHECK32: musttail call x86_thiscallcc void (%struct.C*, ...) [[CALLEE]](%struct.C* %{{.*}}, ...) |
| 99 | // CHECK32-NEXT: ret void |
| 100 | // CHECK32: } |
| 101 | // |
| 102 | // CHECK64-LABEL: define linkonce_odr void @"??_9C@@$B7AA"(%struct.C* %this, ...) |
| 103 | // CHECK64: #[[ATTR]] comdat |
| 104 | // CHECK64: [[VPTR:%.*]] = getelementptr inbounds void (%struct.C*, ...)*, void (%struct.C*, ...)** %{{.*}}, i64 1 |
| 105 | // CHECK64: [[CALLEE:%.*]] = load void (%struct.C*, ...)*, void (%struct.C*, ...)** [[VPTR]] |
| 106 | // CHECK64: musttail call void (%struct.C*, ...) [[CALLEE]](%struct.C* %{{.*}}, ...) |
| 107 | // CHECK64-NEXT: ret void |
| 108 | // CHECK64: } |
| 109 | |
| 110 | // Thunk for calling the 3rd virtual function in C, taking an int parameter, returning a struct. |
| 111 | // CHECK32-LABEL: define linkonce_odr x86_thiscallcc void @"??_9C@@$B7AE"(%struct.C* %this, ...) |
| 112 | // CHECK32: #[[ATTR]] comdat |
| 113 | // CHECK32: [[VPTR:%.*]] = getelementptr inbounds void (%struct.C*, ...)*, void (%struct.C*, ...)** %{{.*}}, i64 2 |
| 114 | // CHECK32: [[CALLEE:%.*]] = load void (%struct.C*, ...)*, void (%struct.C*, ...)** [[VPTR]] |
| 115 | // CHECK32: musttail call x86_thiscallcc void (%struct.C*, ...) [[CALLEE]](%struct.C* %{{.*}}, ...) |
| 116 | // CHECK32-NEXT: ret void |
| 117 | // CHECK32: } |
| 118 | // |
| 119 | // CHECK64-LABEL: define linkonce_odr void @"??_9C@@$BBA@AA"(%struct.C* %this, ...) |
| 120 | // CHECK64: #[[ATTR]] comdat |
| 121 | // CHECK64: [[VPTR:%.*]] = getelementptr inbounds void (%struct.C*, ...)*, void (%struct.C*, ...)** %{{.*}}, i64 2 |
| 122 | // CHECK64: [[CALLEE:%.*]] = load void (%struct.C*, ...)*, void (%struct.C*, ...)** [[VPTR]] |
| 123 | // CHECK64: musttail call void (%struct.C*, ...) [[CALLEE]](%struct.C* %{{.*}}, ...) |
| 124 | // CHECK64-NEXT: ret void |
| 125 | // CHECK64: } |
| 126 | |
| 127 | // Thunk for calling the virtual function in internal class D. |
| 128 | // CHECK32-LABEL: define internal x86_thiscallcc void @"??_9D@?A0x{{[^@]*}}@@$BA@AE"(%"struct.(anonymous namespace)::D"* %this, ...) |
| 129 | // CHECK32: #[[ATTR]] |
| 130 | // CHECK32: [[VPTR:%.*]] = getelementptr inbounds void (%"struct.(anonymous namespace)::D"*, ...)*, void (%"struct.(anonymous namespace)::D"*, ...)** %{{.*}}, i64 0 |
| 131 | // CHECK32: [[CALLEE:%.*]] = load void (%"struct.(anonymous namespace)::D"*, ...)*, void (%"struct.(anonymous namespace)::D"*, ...)** [[VPTR]] |
| 132 | // CHECK32: musttail call x86_thiscallcc void (%"struct.(anonymous namespace)::D"*, ...) [[CALLEE]](%"struct.(anonymous namespace)::D"* %{{.*}}, ...) |
| 133 | // CHECK32-NEXT: ret void |
| 134 | // CHECK32: } |
| 135 | // |
| 136 | // CHECK64-LABEL: define internal void @"??_9D@?A0x{{[^@]*}}@@$BA@AA"(%"struct.(anonymous namespace)::D"* %this, ...) |
| 137 | // CHECK64: #[[ATTR]] |
| 138 | // CHECK64: [[VPTR:%.*]] = getelementptr inbounds void (%"struct.(anonymous namespace)::D"*, ...)*, void (%"struct.(anonymous namespace)::D"*, ...)** %{{.*}}, i64 0 |
| 139 | // CHECK64: [[CALLEE:%.*]] = load void (%"struct.(anonymous namespace)::D"*, ...)*, void (%"struct.(anonymous namespace)::D"*, ...)** [[VPTR]] |
| 140 | // CHECK64: musttail call void (%"struct.(anonymous namespace)::D"*, ...) [[CALLEE]](%"struct.(anonymous namespace)::D"* %{{.*}}, ...) |
| 141 | // CHECK64-NEXT: ret void |
| 142 | // CHECK64: } |
| 143 | |
| 144 | // Thunk for calling the fourth virtual function in C, taking a struct parameter |
| 145 | // and returning a struct. |
| 146 | // CHECK32-LABEL: define linkonce_odr x86_thiscallcc void @"??_9C@@$BM@AE"(%struct.C* %this, ...) {{.*}} comdat |
| 147 | // CHECK32: [[VPTR:%.*]] = getelementptr inbounds void (%struct.C*, ...)*, void (%struct.C*, ...)** %{{.*}}, i64 3 |
| 148 | // CHECK32: [[CALLEE:%.*]] = load void (%struct.C*, ...)*, void (%struct.C*, ...)** [[VPTR]] |
| 149 | // CHECK32: musttail call x86_thiscallcc void (%struct.C*, ...) [[CALLEE]](%struct.C* %{{.*}}, ...) |
| 150 | // CHECK32-NEXT: ret void |
| 151 | // CHECK32: } |
| 152 | // |
| 153 | // CHECK64-LABEL: define linkonce_odr void @"??_9C@@$BBI@AA"(%struct.C* %this, ...) {{.*}} comdat |
| 154 | // CHECK64: [[VPTR:%.*]] = getelementptr inbounds void (%struct.C*, ...)*, void (%struct.C*, ...)** %{{.*}}, i64 3 |
| 155 | // CHECK64: [[CALLEE:%.*]] = load void (%struct.C*, ...)*, void (%struct.C*, ...)** [[VPTR]] |
| 156 | // CHECK64: musttail call void (%struct.C*, ...) [[CALLEE]](%struct.C* %{{.*}}, ...) |
| 157 | // CHECK64: ret void |
| 158 | // CHECK64: } |
| 159 | |
| 160 | // Thunk for calling the fifth virtual function in C which uses the __cdecl calling convention. |
| 161 | // CHECK32-LABEL: define linkonce_odr void @"??_9C@@$BBA@AA"(%struct.C* %this, ...) {{.*}} comdat align 2 { |
| 162 | // CHECK32: [[VPTR:%.*]] = getelementptr inbounds void (%struct.C*, ...)*, void (%struct.C*, ...)** %{{.*}}, i64 4 |
| 163 | // CHECK32: [[CALLEE:%.*]] = load void (%struct.C*, ...)*, void (%struct.C*, ...)** [[VPTR]] |
| 164 | // CHECK32: musttail call void (%struct.C*, ...) [[CALLEE]](%struct.C* %{{.*}}, ...) |
| 165 | // CHECK32: ret void |
| 166 | // CHECK32: } |
| 167 | // |
| 168 | // CHECK64-LABEL: define linkonce_odr void @"??_9C@@$BCA@AA"(%struct.C* %this, ...) {{.*}} comdat align 2 { |
| 169 | // CHECK64: [[VPTR:%.*]] = getelementptr inbounds void (%struct.C*, ...)*, void (%struct.C*, ...)** %{{.*}}, i64 4 |
| 170 | // CHECK64: [[CALLEE:%.*]] = load void (%struct.C*, ...)*, void (%struct.C*, ...)** [[VPTR]] |
| 171 | // CHECK64: musttail call void (%struct.C*, ...) [[CALLEE]](%struct.C* %{{.*}}, ...) |
| 172 | // CHECK64: ret void |
| 173 | // CHECK64: } |
| 174 | |
| 175 | // CHECK32: define linkonce_odr x86_thiscallcc void @"??_9C@@$BBE@AE"(%struct.C* %this, ...) {{.*}} comdat align 2 { |
| 176 | // CHECK32: [[VPTR:%.*]] = getelementptr inbounds void (%struct.C*, ...)*, void (%struct.C*, ...)** %{{.*}}, i64 5 |
| 177 | // CHECK32: [[CALLEE:%.*]] = load void (%struct.C*, ...)*, void (%struct.C*, ...)** [[VPTR]] |
| 178 | // CHECK32: musttail call x86_thiscallcc void (%struct.C*, ...) [[CALLEE]](%struct.C* %{{.*}}, ...) |
| 179 | // CHECK32: ret void |
| 180 | // CHECK32: } |
| 181 | |
| 182 | // CHECK64: define linkonce_odr void @"??_9C@@$BCI@AA"(%struct.C* %this, ...) {{.*}} comdat align 2 { |
| 183 | // CHECK64: [[VPTR:%.*]] = getelementptr inbounds void (%struct.C*, ...)*, void (%struct.C*, ...)** %{{.*}}, i64 5 |
| 184 | // CHECK64: [[CALLEE:%.*]] = load void (%struct.C*, ...)*, void (%struct.C*, ...)** [[VPTR]] |
| 185 | // CHECK64: musttail call void (%struct.C*, ...) [[CALLEE]](%struct.C* %{{.*}}, ...) |
| 186 | // CHECK64: ret void |
| 187 | // CHECK64: } |
| 188 | |
| 189 | // CHECK32: #[[ATTR]] = {{{.*}}"thunk"{{.*}}} |
| 190 | |