Reid Kleckner | a3609b0 | 2013-04-11 18:13:19 +0000 | [diff] [blame] | 1 | // RUN: %clang_cc1 -fno-rtti -emit-llvm %s -o - -cxx-abi microsoft -triple=i386-pc-win32 | FileCheck %s |
| 2 | |
| 3 | struct B1 { |
| 4 | int b; |
| 5 | }; |
| 6 | struct B2 { }; |
| 7 | struct Single : B1 { }; |
| 8 | struct Multiple : B1, B2 { }; |
| 9 | struct Virtual : virtual B1 { |
| 10 | int v; |
| 11 | }; |
Reid Kleckner | a8a0f76 | 2013-03-22 19:02:54 +0000 | [diff] [blame] | 12 | |
| 13 | struct POD { |
| 14 | int a; |
| 15 | int b; |
| 16 | }; |
| 17 | |
Reid Kleckner | a3609b0 | 2013-04-11 18:13:19 +0000 | [diff] [blame] | 18 | struct Polymorphic { |
| 19 | virtual void myVirtual(); |
| 20 | int a; |
| 21 | int b; |
| 22 | }; |
| 23 | |
| 24 | // This class uses the virtual inheritance model, yet its vbptr offset is not 0. |
| 25 | // We still use zero for the null field offset, despite it being a valid field |
| 26 | // offset. |
| 27 | struct NonZeroVBPtr : POD, Virtual { |
| 28 | int n; |
| 29 | }; |
| 30 | |
| 31 | struct Unspecified; |
| 32 | |
| 33 | // Check that we can lower the LLVM types and get the initializers right. |
| 34 | int Single ::*s_d_memptr; |
| 35 | int Polymorphic::*p_d_memptr; |
| 36 | int Multiple ::*m_d_memptr; |
| 37 | int Virtual ::*v_d_memptr; |
| 38 | int NonZeroVBPtr::*n_d_memptr; |
| 39 | int Unspecified::*u_d_memptr; |
| 40 | // CHECK: @"\01?s_d_memptr@@3PQSingle@@HA" = global i32 -1, align 4 |
| 41 | // CHECK: @"\01?p_d_memptr@@3PQPolymorphic@@HA" = global i32 0, align 4 |
| 42 | // CHECK: @"\01?m_d_memptr@@3PQMultiple@@HA" = global i32 -1, align 4 |
| 43 | // CHECK: @"\01?v_d_memptr@@3PQVirtual@@HA" = global { i32, i32 } |
| 44 | // CHECK: { i32 0, i32 -1 }, align 4 |
| 45 | // CHECK: @"\01?n_d_memptr@@3PQNonZeroVBPtr@@HA" = global { i32, i32 } |
| 46 | // CHECK: { i32 0, i32 -1 }, align 4 |
| 47 | // CHECK: @"\01?u_d_memptr@@3PQUnspecified@@HA" = global { i32, i32, i32 } |
| 48 | // CHECK: { i32 0, i32 0, i32 -1 }, align 4 |
| 49 | |
| 50 | void (Single ::*s_f_memptr)(); |
| 51 | void (Multiple::*m_f_memptr)(); |
| 52 | void (Virtual ::*v_f_memptr)(); |
| 53 | // CHECK: @"\01?s_f_memptr@@3P8Single@@AEXXZA" = global i8* null, align 4 |
| 54 | // CHECK: @"\01?m_f_memptr@@3P8Multiple@@AEXXZA" = global { i8*, i32 } zeroinitializer, align 4 |
| 55 | // CHECK: @"\01?v_f_memptr@@3P8Virtual@@AEXXZA" = global { i8*, i32, i32 } zeroinitializer, align 4 |
| 56 | |
Reid Kleckner | a8a0f76 | 2013-03-22 19:02:54 +0000 | [diff] [blame] | 57 | void podMemPtrs() { |
| 58 | int POD::*memptr; |
| 59 | memptr = &POD::a; |
| 60 | memptr = &POD::b; |
| 61 | if (memptr) |
| 62 | memptr = 0; |
| 63 | // Check that member pointers use the right offsets and that null is -1. |
| 64 | // CHECK: define void @"\01?podMemPtrs@@YAXXZ"() #0 { |
| 65 | // CHECK: %[[memptr:.*]] = alloca i32, align 4 |
| 66 | // CHECK-NEXT: store i32 0, i32* %[[memptr]], align 4 |
| 67 | // CHECK-NEXT: store i32 4, i32* %[[memptr]], align 4 |
| 68 | // CHECK-NEXT: %[[memptr_val:.*]] = load i32* %[[memptr]], align 4 |
| 69 | // CHECK-NEXT: %{{.*}} = icmp ne i32 %[[memptr_val]], -1 |
| 70 | // CHECK-NEXT: br i1 %{{.*}}, label %{{.*}}, label %{{.*}} |
| 71 | // CHECK: store i32 -1, i32* %[[memptr]], align 4 |
| 72 | // CHECK: ret void |
| 73 | // CHECK: } |
| 74 | } |
| 75 | |
Reid Kleckner | a8a0f76 | 2013-03-22 19:02:54 +0000 | [diff] [blame] | 76 | void polymorphicMemPtrs() { |
| 77 | int Polymorphic::*memptr; |
| 78 | memptr = &Polymorphic::a; |
| 79 | memptr = &Polymorphic::b; |
| 80 | if (memptr) |
| 81 | memptr = 0; |
| 82 | // Member pointers for polymorphic classes include the vtable slot in their |
| 83 | // offset and use 0 to represent null. |
| 84 | // CHECK: define void @"\01?polymorphicMemPtrs@@YAXXZ"() #0 { |
| 85 | // CHECK: %[[memptr:.*]] = alloca i32, align 4 |
| 86 | // CHECK-NEXT: store i32 4, i32* %[[memptr]], align 4 |
| 87 | // CHECK-NEXT: store i32 8, i32* %[[memptr]], align 4 |
| 88 | // CHECK-NEXT: %[[memptr_val:.*]] = load i32* %[[memptr]], align 4 |
| 89 | // CHECK-NEXT: %{{.*}} = icmp ne i32 %[[memptr_val]], 0 |
| 90 | // CHECK-NEXT: br i1 %{{.*}}, label %{{.*}}, label %{{.*}} |
| 91 | // CHECK: store i32 0, i32* %[[memptr]], align 4 |
| 92 | // CHECK: ret void |
| 93 | // CHECK: } |
| 94 | } |
Reid Kleckner | a3609b0 | 2013-04-11 18:13:19 +0000 | [diff] [blame] | 95 | |
| 96 | bool nullTestDataUnspecified(int Unspecified::*mp) { |
| 97 | return mp; |
| 98 | // CHECK: define zeroext i1 @"\01?nullTestDataUnspecified@@YA_NPQUnspecified@@H@Z"{{.*}} { |
| 99 | // CHECK: %{{.*}} = load { i32, i32, i32 }* %{{.*}}, align 4 |
| 100 | // CHECK: store { i32, i32, i32 } {{.*}} align 4 |
| 101 | // CHECK: %[[mp:.*]] = load { i32, i32, i32 }* %{{.*}}, align 4 |
| 102 | // CHECK: %[[mp0:.*]] = extractvalue { i32, i32, i32 } %[[mp]], 0 |
| 103 | // CHECK: %[[cmp0:.*]] = icmp ne i32 %[[mp0]], 0 |
| 104 | // CHECK: %[[mp1:.*]] = extractvalue { i32, i32, i32 } %[[mp]], 1 |
| 105 | // CHECK: %[[cmp1:.*]] = icmp ne i32 %[[mp1]], 0 |
| 106 | // CHECK: %[[and0:.*]] = and i1 %[[cmp0]], %[[cmp1]] |
| 107 | // CHECK: %[[mp2:.*]] = extractvalue { i32, i32, i32 } %[[mp]], 2 |
| 108 | // CHECK: %[[cmp2:.*]] = icmp ne i32 %[[mp2]], -1 |
| 109 | // CHECK: %[[and1:.*]] = and i1 %[[and0]], %[[cmp2]] |
| 110 | // CHECK: ret i1 %[[and1]] |
| 111 | // CHECK: } |
| 112 | } |
| 113 | |
| 114 | bool nullTestFunctionUnspecified(void (Unspecified::*mp)()) { |
| 115 | return mp; |
| 116 | // CHECK: define zeroext i1 @"\01?nullTestFunctionUnspecified@@YA_NP8Unspecified@@AEXXZ@Z"{{.*}} { |
| 117 | // CHECK: %{{.*}} = load { i8*, i32, i32, i32 }* %{{.*}}, align 4 |
| 118 | // CHECK: store { i8*, i32, i32, i32 } {{.*}} align 4 |
| 119 | // CHECK: %[[mp:.*]] = load { i8*, i32, i32, i32 }* %{{.*}}, align 4 |
| 120 | // CHECK: %[[mp0:.*]] = extractvalue { i8*, i32, i32, i32 } %[[mp]], 0 |
| 121 | // CHECK: %[[cmp0:.*]] = icmp ne i8* %[[mp0]], null |
| 122 | // CHECK: ret i1 %[[cmp0]] |
| 123 | // CHECK: } |
| 124 | } |
| 125 | |
| 126 | int loadDataMemberPointerVirtual(Virtual *o, int Virtual::*memptr) { |
| 127 | return o->*memptr; |
| 128 | // Test that we can unpack this aggregate member pointer and load the member |
| 129 | // data pointer. |
| 130 | // CHECK: define i32 @"\01?loadDataMemberPointerVirtual@@YAHPAUVirtual@@PQ1@H@Z"{{.*}} { |
| 131 | // CHECK: %[[o:.*]] = load %{{.*}}** %{{.*}}, align 4 |
Reid Kleckner | 49eef34 | 2013-04-11 19:01:17 +0000 | [diff] [blame] | 132 | // CHECK: %[[memptr:.*]] = load { i32, i32 }* %{{.*}}, align 4 |
Reid Kleckner | a3609b0 | 2013-04-11 18:13:19 +0000 | [diff] [blame] | 133 | // CHECK: %[[memptr0:.*]] = extractvalue { i32, i32 } %[[memptr:.*]], 0 |
| 134 | // CHECK: %[[memptr1:.*]] = extractvalue { i32, i32 } %[[memptr:.*]], 1 |
| 135 | // CHECK: %[[v6:.*]] = bitcast %{{.*}}* %[[o]] to i8* |
| 136 | // CHECK: %[[vbptr:.*]] = getelementptr inbounds i8* %[[v6]], i32 0 |
| 137 | // CHECK: %[[vbptr_a:.*]] = bitcast i8* %[[vbptr]] to i8** |
| 138 | // CHECK: %[[vbtable:.*]] = load i8** %[[vbptr_a:.*]] |
| 139 | // CHECK: %[[v7:.*]] = getelementptr inbounds i8* %[[vbtable]], i32 %[[memptr1]] |
| 140 | // CHECK: %[[v8:.*]] = bitcast i8* %[[v7]] to i32* |
| 141 | // CHECK: %[[vbase_offs:.*]] = load i32* %[[v8]] |
| 142 | // CHECK: %[[v10:.*]] = getelementptr inbounds i8* %[[vbptr]], i32 %[[vbase_offs]] |
| 143 | // CHECK: %[[offset:.*]] = getelementptr inbounds i8* %[[v10]], i32 %[[memptr0]] |
| 144 | // CHECK: %[[v11:.*]] = bitcast i8* %[[offset]] to i32* |
| 145 | // CHECK: %[[v12:.*]] = load i32* %[[v11]] |
| 146 | // CHECK: ret i32 %[[v12]] |
| 147 | // CHECK: } |
| 148 | } |
| 149 | |
| 150 | int loadDataMemberPointerUnspecified(Unspecified *o, int Unspecified::*memptr) { |
| 151 | return o->*memptr; |
| 152 | // Test that we can unpack this aggregate member pointer and load the member |
| 153 | // data pointer. |
| 154 | // CHECK: define i32 @"\01?loadDataMemberPointerUnspecified@@YAHPAUUnspecified@@PQ1@H@Z"{{.*}} { |
| 155 | // CHECK: %[[o:.*]] = load %{{.*}}** %{{.*}}, align 4 |
Reid Kleckner | 49eef34 | 2013-04-11 19:01:17 +0000 | [diff] [blame] | 156 | // CHECK: %[[memptr:.*]] = load { i32, i32, i32 }* %{{.*}}, align 4 |
Reid Kleckner | a3609b0 | 2013-04-11 18:13:19 +0000 | [diff] [blame] | 157 | // CHECK: %[[memptr0:.*]] = extractvalue { i32, i32, i32 } %[[memptr:.*]], 0 |
| 158 | // CHECK: %[[memptr1:.*]] = extractvalue { i32, i32, i32 } %[[memptr:.*]], 1 |
| 159 | // CHECK: %[[memptr2:.*]] = extractvalue { i32, i32, i32 } %[[memptr:.*]], 2 |
| 160 | // CHECK: %[[base:.*]] = bitcast %{{.*}}* %[[o]] to i8* |
| 161 | // CHECK: %[[is_vbase:.*]] = icmp ne i32 %[[memptr2]], 0 |
| 162 | // CHECK: br i1 %[[is_vbase]], label %[[vadjust:.*]], label %[[skip:.*]] |
| 163 | // |
Reid Kleckner | 49eef34 | 2013-04-11 19:01:17 +0000 | [diff] [blame] | 164 | // CHECK: [[vadjust]] |
Reid Kleckner | a3609b0 | 2013-04-11 18:13:19 +0000 | [diff] [blame] | 165 | // CHECK: %[[vbptr:.*]] = getelementptr inbounds i8* %[[base]], i32 %[[memptr1]] |
| 166 | // CHECK: %[[vbptr_a:.*]] = bitcast i8* %[[vbptr]] to i8** |
| 167 | // CHECK: %[[vbtable:.*]] = load i8** %[[vbptr_a:.*]] |
| 168 | // CHECK: %[[v7:.*]] = getelementptr inbounds i8* %[[vbtable]], i32 %[[memptr2]] |
| 169 | // CHECK: %[[v8:.*]] = bitcast i8* %[[v7]] to i32* |
| 170 | // CHECK: %[[vbase_offs:.*]] = load i32* %[[v8]] |
| 171 | // CHECK: %[[base_adj:.*]] = getelementptr inbounds i8* %[[vbptr]], i32 %[[vbase_offs]] |
| 172 | // |
Reid Kleckner | 49eef34 | 2013-04-11 19:01:17 +0000 | [diff] [blame] | 173 | // CHECK: [[skip]] |
| 174 | // CHECK: %[[new_base:.*]] = phi i8* [ %[[base]], %{{.*}} ], [ %[[base_adj]], %[[vadjust]] ] |
Reid Kleckner | a3609b0 | 2013-04-11 18:13:19 +0000 | [diff] [blame] | 175 | // CHECK: %[[offset:.*]] = getelementptr inbounds i8* %[[new_base]], i32 %[[memptr0]] |
| 176 | // CHECK: %[[v11:.*]] = bitcast i8* %[[offset]] to i32* |
| 177 | // CHECK: %[[v12:.*]] = load i32* %[[v11]] |
| 178 | // CHECK: ret i32 %[[v12]] |
| 179 | // CHECK: } |
| 180 | } |
| 181 | |
| 182 | void callMemberPointerSingle(Single *o, void (Single::*memptr)()) { |
| 183 | (o->*memptr)(); |
| 184 | // Just look for an indirect thiscall. |
| 185 | // CHECK: define void @"\01?callMemberPointerSingle@@{{.*}} #0 { |
| 186 | // CHECK: call x86_thiscallcc void %{{.*}}(%{{.*}} %{{.*}}) |
| 187 | // CHECK: ret void |
| 188 | // CHECK: } |
| 189 | } |
| 190 | |
| 191 | void callMemberPointerMultiple(Multiple *o, void (Multiple::*memptr)()) { |
| 192 | (o->*memptr)(); |
| 193 | // CHECK: define void @"\01?callMemberPointerMultiple@@{{.*}} #0 { |
| 194 | // CHECK: %[[memptr0:.*]] = extractvalue { i8*, i32 } %{{.*}}, 0 |
| 195 | // CHECK: %[[memptr1:.*]] = extractvalue { i8*, i32 } %{{.*}}, 1 |
| 196 | // CHECK: %[[this_adjusted:.*]] = getelementptr inbounds i8* %{{.*}}, i32 %[[memptr1]] |
| 197 | // CHECK: %[[this:.*]] = bitcast i8* %[[this_adjusted]] to {{.*}} |
| 198 | // CHECK: %[[fptr:.*]] = bitcast i8* %[[memptr0]] to {{.*}} |
| 199 | // CHECK: call x86_thiscallcc void %[[fptr]](%{{.*}} %[[this]]) |
| 200 | // CHECK: ret void |
| 201 | // CHECK: } |
| 202 | } |
| 203 | |
| 204 | void callMemberPointerVirtualBase(Virtual *o, void (Virtual::*memptr)()) { |
| 205 | (o->*memptr)(); |
| 206 | // This shares a lot with virtual data member pointers. |
| 207 | // CHECK: define void @"\01?callMemberPointerVirtualBase@@{{.*}} #0 { |
| 208 | // CHECK: %[[memptr0:.*]] = extractvalue { i8*, i32, i32 } %{{.*}}, 0 |
| 209 | // CHECK: %[[memptr1:.*]] = extractvalue { i8*, i32, i32 } %{{.*}}, 1 |
| 210 | // CHECK: %[[memptr2:.*]] = extractvalue { i8*, i32, i32 } %{{.*}}, 2 |
| 211 | // CHECK: %[[vbptr:.*]] = getelementptr inbounds i8* %{{.*}}, i32 0 |
| 212 | // CHECK: %[[vbptr_a:.*]] = bitcast i8* %[[vbptr]] to i8** |
| 213 | // CHECK: %[[vbtable:.*]] = load i8** %[[vbptr_a:.*]] |
| 214 | // CHECK: %[[v7:.*]] = getelementptr inbounds i8* %[[vbtable]], i32 %[[memptr2]] |
| 215 | // CHECK: %[[v8:.*]] = bitcast i8* %[[v7]] to i32* |
| 216 | // CHECK: %[[vbase_offs:.*]] = load i32* %[[v8]] |
| 217 | // CHECK: %[[v10:.*]] = getelementptr inbounds i8* %[[vbptr]], i32 %[[vbase_offs]] |
| 218 | // CHECK: %[[this_adjusted:.*]] = getelementptr inbounds i8* %[[v10]], i32 %[[memptr1]] |
| 219 | // CHECK: %[[fptr:.*]] = bitcast i8* %[[memptr0]] to void ({{.*}}) |
| 220 | // CHECK: %[[this:.*]] = bitcast i8* %[[this_adjusted]] to {{.*}} |
| 221 | // CHECK: call x86_thiscallcc void %[[fptr]](%{{.*}} %[[this]]) |
| 222 | // CHECK: ret void |
| 223 | // CHECK: } |
| 224 | } |