197 lines · cpp
1// RUN: %clang_cc1 -triple %itanium_abi_triple -emit-llvm \2// RUN: -debug-info-kind=standalone -std=c++26 %s -o - | FileCheck %s3 4 5// CHECK: ![[PACK1:[0-9]+]] = distinct !DISubprogram(name: "capture_pack<int>"6// CHECK: ![[PACK2:[0-9]+]] = distinct !DISubprogram(name: "capture_pack<int, int>"7// CHECK: ![[PACK3:[0-9]+]] = distinct !DISubprogram(name: "capture_pack_and_locals<int>"8// CHECK: ![[PACK4:[0-9]+]] = distinct !DISubprogram(name: "capture_pack_and_locals<int, int>"9// CHECK: ![[PACK5:[0-9]+]] = distinct !DISubprogram(name: "capture_pack_and_this<int>"10// CHECK: ![[PACK6:[0-9]+]] = distinct !DISubprogram(name: "capture_pack_and_this<int, int>"11// CHECK: ![[PACK7:[0-9]+]] = distinct !DISubprogram(name: "capture_binding_and_param_pack<int, int>"12 13template<typename... Args>14auto capture_pack(Args... args) {15 return [args..., ...params = args] {16 return 0;17 }();18}19 20// CHECK: distinct !DICompositeType(tag: DW_TAG_class_type, scope: ![[PACK1]]21// CHECK-SAME: elements: ![[PACK1_ELEMS:[0-9]+]]22// CHECK-DAG: ![[PACK1_ELEMS]] = !{![[PACK1_ARGS:[0-9]+]], ![[PACK1_PARAMS:[0-9]+]]}23// CHECK-DAG: ![[PACK1_ARGS]] = !DIDerivedType(tag: DW_TAG_member, name: "args"24// CHECK-DAG: ![[PACK1_PARAMS]] = !DIDerivedType(tag: DW_TAG_member, name: "params"25// CHECK-NOT: DW_TAG_member26 27// CHECK: distinct !DICompositeType(tag: DW_TAG_class_type, scope: ![[PACK2]]28// CHECK-SAME: elements: ![[PACK2_ELEMS:[0-9]+]]29// CHECK: ![[PACK2_ELEMS]] = !{![[PACK2_ARGS:[0-9]+]]30// CHECK-SAME: ![[PACK2_ARGS]]31// CHECK-SAME: ![[PACK2_PARAMS:[0-9]+]]32// CHECK-SAME: ![[PACK2_PARAMS]]}33// CHECK-DAG: ![[PACK2_ARGS]] = !DIDerivedType(tag: DW_TAG_member, name: "args"34// CHECK-DAG: ![[PACK2_PARAMS]] = !DIDerivedType(tag: DW_TAG_member, name: "params"35// CHECK-NOT: DW_TAG_member36 37template<typename... Args>38auto capture_pack_and_locals(int x, Args... args) {39 int w = 0;40 return [=, &args..., &x, ...params = args] {41 return w;42 }();43}44 45// CHECK: distinct !DICompositeType(tag: DW_TAG_class_type, scope: ![[PACK3]]46// CHECK-SAME: elements: ![[PACK3_ELEMS:[0-9]+]]47// CHECK: ![[PACK3_ELEMS]] = !{![[PACK3_ARGS:[0-9]+]]48// CHECK-SAME: ![[PACK3_X:[0-9]+]]49// CHECK-SAME: ![[PACK3_PARAMS:[0-9]+]]50// CHECK-SAME: ![[PACK3_W:[0-9]+]]}51// CHECK-DAG: ![[PACK3_ARGS]] = !DIDerivedType(tag: DW_TAG_member, name: "args"52// CHECK-DAG: !DIDerivedType(tag: DW_TAG_reference_type53// CHECK-DAG: ![[PACK3_X]] = !DIDerivedType(tag: DW_TAG_member, name: "x"54// CHECK-DAG: ![[PACK3_PARAMS]] = !DIDerivedType(tag: DW_TAG_member, name: "params"55// CHECK-DAG: ![[PACK3_W]] = !DIDerivedType(tag: DW_TAG_member, name: "w"56// CHECK-NOT: DW_TAG_member57 58// CHECK: distinct !DICompositeType(tag: DW_TAG_class_type, scope: ![[PACK4]]59// CHECK-SAME: elements: ![[PACK4_ELEMS:[0-9]+]]60// CHECK: ![[PACK4_ELEMS]] = !{![[PACK4_ARGS:[0-9]+]]61// CHECK-SAME: ![[PACK4_ARGS]]62// CHECK-SAME: ![[PACK4_X:[0-9]+]]63// CHECK-SAME: ![[PACK4_PARAMS:[0-9]+]]64// CHECK-SAME: ![[PACK4_PARAMS]]65// CHECK-SAME: ![[PACK4_W:[0-9]+]]}66// CHECK-DAG: ![[PACK4_ARGS]] = !DIDerivedType(tag: DW_TAG_member, name: "args"67// CHECK-DAG: ![[PACK4_X]] = !DIDerivedType(tag: DW_TAG_member, name: "x"68// CHECK-DAG: ![[PACK4_PARAMS]] = !DIDerivedType(tag: DW_TAG_member, name: "params"69// CHECK-DAG: ![[PACK4_W]] = !DIDerivedType(tag: DW_TAG_member, name: "w"70// CHECK-NOT: DW_TAG_member71 72struct Foo {73 template<typename... Args>74 auto capture_pack_and_this(Args... args) {75 auto val1 = [this, args..., ...params = args] {76 return w;77 }();78 79 auto val2 = [args..., this, ...params = args] {80 return w;81 }();82 83 auto val3 = [args..., ...params = args, this] {84 return w;85 }();86 87 return val1 + val2 + val3;88 }89 90 int w = 10;91} f;92 93// CHECK: distinct !DICompositeType(tag: DW_TAG_class_type, scope: ![[PACK5]]94// CHECK-SAME: elements: ![[PACK5a_ELEMS:[0-9]+]]95// CHECK: ![[PACK5a_ELEMS]] = !{![[PACK5a_THIS:[0-9]+]]96// CHECK-SAME: ![[PACK5a_ARGS:[0-9]+]]97// CHECK-SAME: ![[PACK5a_PARAMS:[0-9]+]]}98// CHECK-DAG: ![[PACK5a_THIS]] = !DIDerivedType(tag: DW_TAG_member, name: "this"99// CHECK-DAG: ![[PACK5a_ARGS]] = !DIDerivedType(tag: DW_TAG_member, name: "args"100// CHECK-DAG: ![[PACK5a_PARAMS]] = !DIDerivedType(tag: DW_TAG_member, name: "params"101// CHECK-NOT: DW_TAG_member102 103// CHECK: distinct !DICompositeType(tag: DW_TAG_class_type, scope: ![[PACK5]]104// CHECK-SAME: elements: ![[PACK5b_ELEMS:[0-9]+]]105// CHECK: ![[PACK5b_ELEMS]] = !{![[PACK5b_ARGS:[0-9]+]]106// CHECK-SAME: ![[PACK5b_THIS:[0-9]+]]107// CHECK-SAME: ![[PACK5b_PARAMS:[0-9]+]]}108// CHECK-DAG: ![[PACK5b_ARGS]] = !DIDerivedType(tag: DW_TAG_member, name: "args"109// CHECK-DAG: ![[PACK5b_THIS]] = !DIDerivedType(tag: DW_TAG_member, name: "this"110// CHECK-DAG: ![[PACK5b_PARAMS]] = !DIDerivedType(tag: DW_TAG_member, name: "params"111// CHECK-NOT: DW_TAG_member112 113// CHECK: distinct !DICompositeType(tag: DW_TAG_class_type, scope: ![[PACK5]]114// CHECK: elements: ![[PACK5c_ELEMS:[0-9]+]]115// CHECK-NEXT: ![[PACK5c_ELEMS]] = !{![[PACK5c_ARGS:[0-9]+]]116// CHECK-SAME: ![[PACK5c_PARAMS:[0-9]+]]117// CHECK-SAME: ![[PACK5c_THIS:[0-9]+]]}118// CHECK-DAG: ![[PACK5c_ARGS]] = !DIDerivedType(tag: DW_TAG_member, name: "args"119// CHECK-DAG: ![[PACK5c_PARAMS]] = !DIDerivedType(tag: DW_TAG_member, name: "params"120// CHECK-DAG: ![[PACK5c_THIS]] = !DIDerivedType(tag: DW_TAG_member, name: "this"121// CHECK-NOT: DW_TAG_member122 123// CHECK: distinct !DICompositeType(tag: DW_TAG_class_type, scope: ![[PACK6]]124// CHECK-SAME: elements: ![[PACK6a_ELEMS:[0-9]+]]125// CHECK: ![[PACK6a_ELEMS]] = !{![[PACK6a_THIS:[0-9]+]]126// CHECK-SAME: ![[PACK6a_ARGS:[0-9]+]]127// CHECK-SAME: ![[PACK6a_ARGS]]128// CHECK-SAME: ![[PACK6a_PARAMS:[0-9]+]]129// CHECK-SAME: ![[PACK6a_PARAMS]]130// CHECK-DAG: ![[PACK6a_THIS]] = !DIDerivedType(tag: DW_TAG_member, name: "this"131// CHECK-DAG: ![[PACK6a_ARGS]] = !DIDerivedType(tag: DW_TAG_member, name: "args"132// CHECK-DAG: ![[PACK6a_PARAMS]] = !DIDerivedType(tag: DW_TAG_member, name: "params"133// CHECK-NOT: DW_TAG_member134 135// CHECK: distinct !DICompositeType(tag: DW_TAG_class_type, scope: ![[PACK6]]136// CHECK-SAME: elements: ![[PACK6b_ELEMS:[0-9]+]]137// CHECK: ![[PACK6b_ELEMS]] = !{![[PACK6b_ARGS:[0-9]+]]138// CHECK-SAME: ![[PACK6b_ARGS]]139// CHECK-SAME: ![[PACK6b_THIS:[0-9]+]]140// CHECK-SAME: ![[PACK6b_PARAMS:[0-9]+]]141// CHECK-SAME: ![[PACK6b_PARAMS]]}142// CHECK-DAG: ![[PACK6b_ARGS]] = !DIDerivedType(tag: DW_TAG_member, name: "args"143// CHECK-DAG: ![[PACK6b_THIS]] = !DIDerivedType(tag: DW_TAG_member, name: "this"144// CHECK-DAG: ![[PACK6b_PARAMS]] = !DIDerivedType(tag: DW_TAG_member, name: "params"145// CHECK-NOT: DW_TAG_member146 147// CHECK: distinct !DICompositeType(tag: DW_TAG_class_type, scope: ![[PACK6]]148// CHECK-SAME: elements: ![[PACK6c_ELEMS:[0-9]+]]149// CHECK: ![[PACK6c_ELEMS]] = !{![[PACK6c_ARGS:[0-9]+]]150// CHECK-SAME: ![[PACK6c_ARGS]]151// CHECK-SAME: ![[PACK6c_PARAMS:[0-9]+]]152// CHECK-SAME: ![[PACK6c_PARAMS]]153// CHECK-SAME: ![[PACK6c_THIS:[0-9]+]]}154// CHECK-DAG: ![[PACK6c_ARGS]] = !DIDerivedType(tag: DW_TAG_member, name: "args"155// CHECK-DAG: ![[PACK6c_PARAMS]] = !DIDerivedType(tag: DW_TAG_member, name: "params"156// CHECK-DAG: ![[PACK6c_THIS]] = !DIDerivedType(tag: DW_TAG_member, name: "this"157// CHECK-NOT: DW_TAG_member158 159template<typename... Args>160auto capture_binding_and_param_pack(Args... args) {161 struct C { int x = 2; int y = 3; };162 163 auto [x, ...e] = C();164 165 return [&, args..., x, ...params = args,166 ...es = e] {167 return e...[0] + es...[0];168 }();169}170 171// CHECK: distinct !DICompositeType(tag: DW_TAG_structure_type, name: "C"172// CHECK: distinct !DICompositeType(tag: DW_TAG_class_type, scope: ![[PACK7]]173// CHECK-SAME: elements: ![[PACK7_ELEMS:[0-9]+]]174// CHECK: ![[PACK7_ELEMS]] = !{![[PACK7_ARGS:[0-9]+]]175// CHECK-SAME: ![[PACK7_ARGS]]176// CHECK-SAME: ![[PACK7_X:[0-9]+]]177// CHECK-SAME: ![[PACK7_PARAMS:[0-9]+]]178// CHECK-SAME: ![[PACK7_PARAMS]]179// CHECK-SAME: ![[PACK7_ES:[0-9]+]]180// CHECK-SAME: ![[PACK7_E:[0-9]+]]}181// CHECK-DAG: ![[PACK7_ARGS]] = !DIDerivedType(tag: DW_TAG_member, name: "args"182// CHECK-DAG: ![[PACK7_X]] = !DIDerivedType(tag: DW_TAG_member, name: "x"183// CHECK-DAG: ![[PACK7_PARAMS]] = !DIDerivedType(tag: DW_TAG_member, name: "params"184// CHECK-DAG: ![[PACK7_ES]] = !DIDerivedType(tag: DW_TAG_member, name: "es"185// CHECK-DAG: ![[PACK7_E]] = !DIDerivedType(tag: DW_TAG_member, name: "e"186// CHECK-NOT: DW_TAG_member187 188int main() {189 return capture_pack(1)190 + capture_pack(1, 2)191 + capture_pack_and_locals(1, 2)192 + capture_pack_and_locals(1, 2, 3)193 + f.capture_pack_and_this(1)194 + f.capture_pack_and_this(1, 2)195 + capture_binding_and_param_pack(1, 2);196}197