1// RUN: %clang_cc1 -std=c++11 -triple x86_64-unknown-unknown -emit-llvm -o - %s | FileCheck %s 2// RUN: %clang_cc1 -std=c++11 -triple x86_64-windows-msvc -emit-llvm -o - %s | FileCheck %s -check-prefix=WIN64 3 4namespace trivial { 5// Trivial structs should be passed directly. 6struct A { 7 void *p; 8}; 9void foo(A); 10void bar() { 11 foo({}); 12} 13// CHECK-LABEL: define void @_ZN7trivial3barEv() 14// CHECK: alloca %"struct.trivial::A" 15// CHECK: load i8** 16// CHECK: call void @_ZN7trivial3fooENS_1AE(i8* %{{.*}}) 17// CHECK-LABEL: declare void @_ZN7trivial3fooENS_1AE(i8*) 18 19// WIN64-LABEL: declare void @"\01?foo@trivial@@YAXUA@1@@Z"(i64) 20} 21 22namespace default_ctor { 23struct A { 24 A(); 25 void *p; 26}; 27void foo(A); 28void bar() { 29 // Core issue 1590. We can pass this type in registers, even though C++ 30 // normally doesn't permit copies when using braced initialization. 31 foo({}); 32} 33// CHECK-LABEL: define void @_ZN12default_ctor3barEv() 34// CHECK: alloca %"struct.default_ctor::A" 35// CHECK: call void @_Z{{.*}}C1Ev( 36// CHECK: load i8** 37// CHECK: call void @_ZN12default_ctor3fooENS_1AE(i8* %{{.*}}) 38// CHECK-LABEL: declare void @_ZN12default_ctor3fooENS_1AE(i8*) 39 40// WIN64-LABEL: declare void @"\01?foo@default_ctor@@YAXUA@1@@Z"(i64) 41} 42 43namespace move_ctor { 44// The presence of a move constructor implicitly deletes the trivial copy ctor 45// and means that we have to pass this struct by address. 46struct A { 47 A(); 48 A(A &&o); 49 void *p; 50}; 51void foo(A); 52void bar() { 53 foo({}); 54} 55// FIXME: The copy ctor is implicitly deleted. 56// CHECK-DISABLED-LABEL: define void @_ZN9move_ctor3barEv() 57// CHECK-DISABLED: call void @_Z{{.*}}C1Ev( 58// CHECK-DISABLED-NOT: call 59// CHECK-DISABLED: call void @_ZN9move_ctor3fooENS_1AE(%"struct.move_ctor::A"* %{{.*}}) 60// CHECK-DISABLED-LABEL: declare void @_ZN9move_ctor3fooENS_1AE(%"struct.move_ctor::A"*) 61 62// WIN64-LABEL: declare void @"\01?foo@move_ctor@@YAXUA@1@@Z"(%"struct.move_ctor::A"*) 63} 64 65namespace all_deleted { 66struct A { 67 A(); 68 A(const A &o) = delete; 69 A(A &&o) = delete; 70 void *p; 71}; 72void foo(A); 73void bar() { 74 foo({}); 75} 76// FIXME: The copy ctor is deleted. 77// CHECK-DISABLED-LABEL: define void @_ZN11all_deleted3barEv() 78// CHECK-DISABLED: call void @_Z{{.*}}C1Ev( 79// CHECK-DISABLED-NOT call 80// CHECK-DISABLED: call void @_ZN11all_deleted3fooENS_1AE(%"struct.all_deleted::A"* %{{.*}}) 81// CHECK-DISABLED-LABEL: declare void @_ZN11all_deleted3fooENS_1AE(%"struct.all_deleted::A"*) 82 83// WIN64-LABEL: declare void @"\01?foo@all_deleted@@YAXUA@1@@Z"(%"struct.all_deleted::A"*) 84} 85 86namespace implicitly_deleted { 87struct A { 88 A(); 89 A &operator=(A &&o); 90 void *p; 91}; 92void foo(A); 93void bar() { 94 foo({}); 95} 96// FIXME: The copy and move ctors are implicitly deleted. 97// CHECK-DISABLED-LABEL: define void @_ZN18implicitly_deleted3barEv() 98// CHECK-DISABLED: call void @_Z{{.*}}C1Ev( 99// CHECK-DISABLED-NOT call 100// CHECK-DISABLED: call void @_ZN18implicitly_deleted3fooENS_1AE(%"struct.implicitly_deleted::A"* %{{.*}}) 101// CHECK-DISABLED-LABEL: declare void @_ZN18implicitly_deleted3fooENS_1AE(%"struct.implicitly_deleted::A"*) 102 103// WIN64-LABEL: declare void @"\01?foo@implicitly_deleted@@YAXUA@1@@Z"(%"struct.implicitly_deleted::A"*) 104} 105 106namespace one_deleted { 107struct A { 108 A(); 109 A(A &&o) = delete; 110 void *p; 111}; 112void foo(A); 113void bar() { 114 foo({}); 115} 116// FIXME: The copy constructor is implicitly deleted. 117// CHECK-DISABLED-LABEL: define void @_ZN11one_deleted3barEv() 118// CHECK-DISABLED: call void @_Z{{.*}}C1Ev( 119// CHECK-DISABLED-NOT call 120// CHECK-DISABLED: call void @_ZN11one_deleted3fooENS_1AE(%"struct.one_deleted::A"* %{{.*}}) 121// CHECK-DISABLED-LABEL: declare void @_ZN11one_deleted3fooENS_1AE(%"struct.one_deleted::A"*) 122 123// WIN64-LABEL: declare void @"\01?foo@one_deleted@@YAXUA@1@@Z"(%"struct.one_deleted::A"*) 124} 125 126namespace copy_defaulted { 127struct A { 128 A(); 129 A(const A &o) = default; 130 A(A &&o) = delete; 131 void *p; 132}; 133void foo(A); 134void bar() { 135 foo({}); 136} 137// CHECK-LABEL: define void @_ZN14copy_defaulted3barEv() 138// CHECK: call void @_Z{{.*}}C1Ev( 139// CHECK: load i8** 140// CHECK: call void @_ZN14copy_defaulted3fooENS_1AE(i8* %{{.*}}) 141// CHECK-LABEL: declare void @_ZN14copy_defaulted3fooENS_1AE(i8*) 142 143// WIN64-LABEL: declare void @"\01?foo@copy_defaulted@@YAXUA@1@@Z"(i64) 144} 145 146namespace move_defaulted { 147struct A { 148 A(); 149 A(const A &o) = delete; 150 A(A &&o) = default; 151 void *p; 152}; 153void foo(A); 154void bar() { 155 foo({}); 156} 157// CHECK-LABEL: define void @_ZN14move_defaulted3barEv() 158// CHECK: call void @_Z{{.*}}C1Ev( 159// CHECK: load i8** 160// CHECK: call void @_ZN14move_defaulted3fooENS_1AE(i8* %{{.*}}) 161// CHECK-LABEL: declare void @_ZN14move_defaulted3fooENS_1AE(i8*) 162 163// WIN64-LABEL: declare void @"\01?foo@move_defaulted@@YAXUA@1@@Z"(%"struct.move_defaulted::A"*) 164} 165 166namespace trivial_defaulted { 167struct A { 168 A(); 169 A(const A &o) = default; 170 void *p; 171}; 172void foo(A); 173void bar() { 174 foo({}); 175} 176// CHECK-LABEL: define void @_ZN17trivial_defaulted3barEv() 177// CHECK: call void @_Z{{.*}}C1Ev( 178// CHECK: load i8** 179// CHECK: call void @_ZN17trivial_defaulted3fooENS_1AE(i8* %{{.*}}) 180// CHECK-LABEL: declare void @_ZN17trivial_defaulted3fooENS_1AE(i8*) 181 182// WIN64-LABEL: declare void @"\01?foo@trivial_defaulted@@YAXUA@1@@Z"(i64) 183} 184 185namespace two_copy_ctors { 186struct A { 187 A(); 188 A(const A &) = default; 189 A(const A &, int = 0); 190 void *p; 191}; 192struct B : A {}; 193 194void foo(B); 195void bar() { 196 foo({}); 197} 198// FIXME: This class has a non-trivial copy ctor and a trivial copy ctor. It's 199// not clear whether we should pass by address or in registers. 200// CHECK-DISABLED-LABEL: define void @_ZN14two_copy_ctors3barEv() 201// CHECK-DISABLED: call void @_Z{{.*}}C1Ev( 202// CHECK-DISABLED: call void @_ZN14two_copy_ctors3fooENS_1BE(%"struct.two_copy_ctors::B"* %{{.*}}) 203// CHECK-DISABLED-LABEL: declare void @_ZN14two_copy_ctors3fooENS_1BE(%"struct.two_copy_ctors::B"*) 204 205// WIN64-LABEL: declare void @"\01?foo@two_copy_ctors@@YAXUB@1@@Z"(%"struct.two_copy_ctors::B"*) 206} 207