1 // RUN: %clang_cc1 -triple x86_64-apple-darwin10 -emit-llvm -o - %s | FileCheck %s 2 3 // rdar://8818236 4 namespace rdar8818236 { 5 struct S { 6 char c2; 7 union { 8 char c; 9 int i; 10 }; 11 }; 12 13 // CHECK: @_ZN11rdar88182363fooE = global i64 4 14 char S::*foo = &S::c; 15 } 16 17 struct A { 18 union { 19 int a; 20 void* b; 21 }; 22 AA23 A() : a(0) { } 24 }; 25 26 A a; 27 28 namespace PR7021 { 29 struct X 30 { 31 union { long l; }; 32 }; 33 34 // CHECK-LABEL: define void @_ZN6PR70211fENS_1XES0_ f(X x,X z)35 void f(X x, X z) { 36 X x1; 37 38 // CHECK: store i64 1, i64 39 x1.l = 1; 40 41 // CHECK: call void @llvm.memcpy.p0i8.p0i8.i64 42 X x2(x1); 43 44 X x3; 45 // CHECK: call void @llvm.memcpy.p0i8.p0i8.i64 46 x3 = x1; 47 48 // CHECK: ret void 49 } 50 } 51 52 namespace test2 { 53 struct A { 54 struct { 55 union { 56 int b; 57 }; 58 }; 59 60 A(); 61 }; 62 A()63 A::A() : b(10) { } 64 // CHECK-LABEL: define void @_ZN5test21AC2Ev( 65 // CHECK-NOT: } 66 // CHECK: store i32 10 67 // CHECK: } 68 } 69 70 namespace PR10512 { 71 struct A { 72 A(); 73 A(int); 74 A(long); 75 76 struct { 77 struct {int x;}; 78 struct {int y;}; 79 }; 80 }; 81 82 // CHECK-LABEL: define void @_ZN7PR105121AC2Ev 83 // CHECK: [[THISADDR:%[a-zA-z0-9.]+]] = alloca [[A:%"struct[A-Za-z0-9:.]+"]] 84 // CHECK-NEXT: store [[A]]* [[THIS:%[a-zA-z0-9.]+]], [[A]]** [[THISADDR]] 85 // CHECK-NEXT: [[THIS1:%[a-zA-z0-9.]+]] = load [[A]]*, [[A]]** [[THISADDR]] 86 // CHECK-NEXT: ret void A()87 A::A() {} 88 89 // CHECK-LABEL: define void @_ZN7PR105121AC2Ei 90 // CHECK: [[THISADDR:%[a-zA-z0-9.]+]] = alloca [[A:%"struct[A-Za-z0-9:.]+"]] 91 // CHECK-NEXT: [[XADDR:%[a-zA-z0-9.]+]] = alloca i32 92 // CHECK-NEXT: store [[A]]* [[THIS:%[a-zA-z0-9.]+]], [[A]]** [[THISADDR]] 93 // CHECK-NEXT: store i32 [[X:%[a-zA-z0-9.]+]], i32* [[XADDR]] 94 // CHECK-NEXT: [[THIS1:%[a-zA-z0-9.]+]] = load [[A]]*, [[A]]** [[THISADDR]] 95 // CHECK-NEXT: {{getelementptr inbounds.*i32 0, i32 0}} 96 // CHECK-NEXT: {{getelementptr inbounds.*i32 0, i32 0}} 97 // CHECK-NEXT: {{getelementptr inbounds.*i32 0, i32 0}} 98 // CHECK-NEXT: [[TMP:%[a-zA-z0-9.]+]] = load i32, i32* [[XADDR]] 99 // CHECK-NEXT: store i32 [[TMP]] 100 // CHECK-NEXT: ret void A(int x)101 A::A(int x) : x(x) { } 102 103 // CHECK-LABEL: define void @_ZN7PR105121AC2El 104 // CHECK: [[THISADDR:%[a-zA-z0-9.]+]] = alloca [[A:%"struct[A-Za-z0-9:.]+"]] 105 // CHECK-NEXT: [[XADDR:%[a-zA-z0-9.]+]] = alloca i64 106 // CHECK-NEXT: store [[A]]* [[THIS:%[a-zA-z0-9.]+]], [[A]]** [[THISADDR]] 107 // CHECK-NEXT: store i64 [[X:%[a-zA-z0-9.]+]], i64* [[XADDR]] 108 // CHECK-NEXT: [[THIS1:%[a-zA-z0-9.]+]] = load [[A]]*, [[A]]** [[THISADDR]] 109 // CHECK-NEXT: {{getelementptr inbounds.*i32 0, i32 0}} 110 // CHECK-NEXT: {{getelementptr inbounds.*i32 0, i32 1}} 111 // CHECK-NEXT: {{getelementptr inbounds.*i32 0, i32 0}} 112 // CHECK-NEXT: [[TMP:%[a-zA-z0-9.]+]] = load i64, i64* [[XADDR]] 113 // CHECK-NEXT: [[CONV:%[a-zA-z0-9.]+]] = trunc i64 [[TMP]] to i32 114 // CHECK-NEXT: store i32 [[CONV]] 115 // CHECK-NEXT: ret void A(long y)116 A::A(long y) : y(y) { } 117 } 118 119 namespace test3 { 120 struct A { 121 union { 122 mutable char fibers[100]; 123 struct { 124 void (*callback)(void*); 125 void *callback_value; 126 }; 127 }; 128 129 A(); 130 }; 131 A()132 A::A() : callback(0), callback_value(0) {} 133 // CHECK-LABEL: define void @_ZN5test31AC2Ev( 134 // CHECK: [[THIS:%.*]] = load 135 // CHECK-NEXT: [[UNION:%.*]] = getelementptr inbounds {{.*}} [[THIS]], i32 0, i32 0 136 // CHECK-NEXT: [[STRUCT:%.*]] = bitcast {{.*}}* [[UNION]] to 137 // CHECK-NEXT: [[CALLBACK:%.*]] = getelementptr inbounds {{.*}} [[STRUCT]], i32 0, i32 0 138 // CHECK: store 139 // CHECK-NEXT: [[UNION:%.*]] = getelementptr inbounds {{.*}} [[THIS]], i32 0, i32 0 140 // CHECK-NEXT: [[STRUCT:%.*]] = bitcast {{.*}}* [[UNION]] to 141 // CHECK-NEXT: [[CVALUE:%.*]] = getelementptr inbounds {{.*}} [[STRUCT]], i32 0, i32 1 142 // CHECK-NEXT: store i8* null, i8** [[CVALUE]] 143 } 144 145 struct S { 146 // CHECK: store i32 42 147 // CHECK: store i32 55 SS148 S() : x(42), y(55) {} 149 union { 150 struct { 151 int x; 152 union { int y; }; 153 }; 154 }; 155 } s; 156 157 158 //PR8760 159 template <typename T> struct Foo { FooFoo160 Foo() : ptr(__nullptr) {} 161 union { 162 T *ptr; 163 }; 164 }; 165 Foo<int> f; 166 167 namespace PR9683 { 168 struct QueueEntry { 169 union { 170 struct { 171 void* mPtr; 172 union { 173 unsigned mSubmissionTag; 174 }; 175 }; 176 unsigned mValue; 177 }; QueueEntryPR9683::QueueEntry178 QueueEntry() {} 179 }; 180 QueueEntry QE; 181 } 182 183 namespace PR13154 { 184 struct IndirectReferenceField { 185 struct { 186 float &x; 187 }; 188 IndirectReferenceField(float &x); 189 }; IndirectReferenceField(float & xx)190 IndirectReferenceField::IndirectReferenceField(float &xx) : x(xx) {} 191 } 192