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Michael137Michael137
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[clang][DebugInfo][test] Add tests for lambda capture packs (#160705)
We didn't have coverage for this yet. And I'm planning on making some chnges in this area. These tests will be useful for that.
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‎clang/test/DebugInfo/CXX/lambda-capture-packs.cpp‎

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// RUN: %clang_cc1 -triple %itanium_abi_triple -emit-llvm \
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// RUN: -debug-info-kind=standalone -std=c++26 %s -o - | FileCheck %s
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// CHECK: ![[PACK1:[0-9]+]] = distinct !DISubprogram(name: "capture_pack<int>"
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// CHECK: ![[PACK2:[0-9]+]] = distinct !DISubprogram(name: "capture_pack<int, int>"
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// CHECK: ![[PACK3:[0-9]+]] = distinct !DISubprogram(name: "capture_pack_and_locals<int>"
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// CHECK: ![[PACK4:[0-9]+]] = distinct !DISubprogram(name: "capture_pack_and_locals<int, int>"
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// CHECK: ![[PACK5:[0-9]+]] = distinct !DISubprogram(name: "capture_pack_and_this<int>"
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// CHECK: ![[PACK6:[0-9]+]] = distinct !DISubprogram(name: "capture_pack_and_this<int, int>"
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// CHECK: ![[PACK7:[0-9]+]] = distinct !DISubprogram(name: "capture_binding_and_param_pack<int, int>"
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template<typename... Args>
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auto capture_pack(Args... args) {
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return [args..., ...params = args] {
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return 0;
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}();
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}
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// CHECK: distinct !DICompositeType(tag: DW_TAG_class_type, scope: ![[PACK1]]
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// CHECK-SAME: elements: ![[PACK1_ELEMS:[0-9]+]]
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// CHECK-DAG: ![[PACK1_ELEMS]] = !{![[PACK1_ARGS:[0-9]+]], ![[PACK1_PARAMS:[0-9]+]]}
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// CHECK-DAG: ![[PACK1_ARGS]] = !DIDerivedType(tag: DW_TAG_member, name: "args"
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// CHECK-DAG: ![[PACK1_PARAMS]] = !DIDerivedType(tag: DW_TAG_member, name: "params"
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// CHECK-NOT: DW_TAG_member
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// CHECK: distinct !DICompositeType(tag: DW_TAG_class_type, scope: ![[PACK2]]
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// CHECK-SAME: elements: ![[PACK2_ELEMS:[0-9]+]]
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// CHECK: ![[PACK2_ELEMS]] = !{![[PACK2_ARGS:[0-9]+]]
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// CHECK-SAME: ![[PACK2_ARGS]]
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// CHECK-SAME: ![[PACK2_PARAMS:[0-9]+]]
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// CHECK-SAME: ![[PACK2_PARAMS]]}
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// CHECK-DAG: ![[PACK2_ARGS]] = !DIDerivedType(tag: DW_TAG_member, name: "args"
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// CHECK-DAG: ![[PACK2_PARAMS]] = !DIDerivedType(tag: DW_TAG_member, name: "params"
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// CHECK-NOT: DW_TAG_member
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template<typename... Args>
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auto capture_pack_and_locals(int x, Args... args) {
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int w = 0;
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return [=, &args..., &x, ...params = args] {
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return w;
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}();
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}
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// CHECK: distinct !DICompositeType(tag: DW_TAG_class_type, scope: ![[PACK3]]
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// CHECK-SAME: elements: ![[PACK3_ELEMS:[0-9]+]]
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// CHECK: ![[PACK3_ELEMS]] = !{![[PACK3_ARGS:[0-9]+]]
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// CHECK-SAME: ![[PACK3_X:[0-9]+]]
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// CHECK-SAME: ![[PACK3_PARAMS:[0-9]+]]
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// CHECK-SAME: ![[PACK3_W:[0-9]+]]}
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// CHECK-DAG: ![[PACK3_ARGS]] = !DIDerivedType(tag: DW_TAG_member, name: "args"
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// CHECK-DAG: !DIDerivedType(tag: DW_TAG_reference_type
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// CHECK-DAG: ![[PACK3_X]] = !DIDerivedType(tag: DW_TAG_member, name: "x"
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// CHECK-DAG: ![[PACK3_PARAMS]] = !DIDerivedType(tag: DW_TAG_member, name: "params"
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// CHECK-DAG: ![[PACK3_W]] = !DIDerivedType(tag: DW_TAG_member, name: "w"
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// CHECK-NOT: DW_TAG_member
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// CHECK: distinct !DICompositeType(tag: DW_TAG_class_type, scope: ![[PACK4]]
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// CHECK-SAME: elements: ![[PACK4_ELEMS:[0-9]+]]
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// CHECK: ![[PACK4_ELEMS]] = !{![[PACK4_ARGS:[0-9]+]]
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// CHECK-SAME: ![[PACK4_ARGS]]
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// CHECK-SAME: ![[PACK4_X:[0-9]+]]
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// CHECK-SAME: ![[PACK4_PARAMS:[0-9]+]]
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// CHECK-SAME: ![[PACK4_PARAMS]]
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// CHECK-SAME: ![[PACK4_W:[0-9]+]]}
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// CHECK-DAG: ![[PACK4_ARGS]] = !DIDerivedType(tag: DW_TAG_member, name: "args"
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// CHECK-DAG: ![[PACK4_X]] = !DIDerivedType(tag: DW_TAG_member, name: "x"
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// CHECK-DAG: ![[PACK4_PARAMS]] = !DIDerivedType(tag: DW_TAG_member, name: "params"
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// CHECK-DAG: ![[PACK4_W]] = !DIDerivedType(tag: DW_TAG_member, name: "w"
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// CHECK-NOT: DW_TAG_member
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struct Foo {
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template<typename... Args>
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auto capture_pack_and_this(Args... args) {
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auto val1 = [this, args..., ...params = args] {
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return w;
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}();
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auto val2 = [args..., this, ...params = args] {
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return w;
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}();
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auto val3 = [args..., ...params = args, this] {
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return w;
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}();
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return val1 + val2 + val3;
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}
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int w = 10;
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} f;
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// CHECK: distinct !DICompositeType(tag: DW_TAG_class_type, scope: ![[PACK5]]
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// CHECK-SAME: elements: ![[PACK5a_ELEMS:[0-9]+]]
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// CHECK: ![[PACK5a_ELEMS]] = !{![[PACK5a_THIS:[0-9]+]]
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// CHECK-SAME: ![[PACK5a_ARGS:[0-9]+]]
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// CHECK-SAME: ![[PACK5a_PARAMS:[0-9]+]]}
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// CHECK-DAG: ![[PACK5a_THIS]] = !DIDerivedType(tag: DW_TAG_member, name: "this"
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// CHECK-DAG: ![[PACK5a_ARGS]] = !DIDerivedType(tag: DW_TAG_member, name: "args"
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// CHECK-DAG: ![[PACK5a_PARAMS]] = !DIDerivedType(tag: DW_TAG_member, name: "params"
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// CHECK-NOT: DW_TAG_member
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// CHECK: distinct !DICompositeType(tag: DW_TAG_class_type, scope: ![[PACK5]]
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// CHECK-SAME: elements: ![[PACK5b_ELEMS:[0-9]+]]
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// CHECK: ![[PACK5b_ELEMS]] = !{![[PACK5b_ARGS:[0-9]+]]
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// CHECK-SAME: ![[PACK5b_THIS:[0-9]+]]
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// CHECK-SAME: ![[PACK5b_PARAMS:[0-9]+]]}
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// CHECK-DAG: ![[PACK5b_ARGS]] = !DIDerivedType(tag: DW_TAG_member, name: "args"
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// CHECK-DAG: ![[PACK5b_THIS]] = !DIDerivedType(tag: DW_TAG_member, name: "this"
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// CHECK-DAG: ![[PACK5b_PARAMS]] = !DIDerivedType(tag: DW_TAG_member, name: "params"
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// CHECK-NOT: DW_TAG_member
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// CHECK: distinct !DICompositeType(tag: DW_TAG_class_type, scope: ![[PACK5]]
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// CHECK: elements: ![[PACK5c_ELEMS:[0-9]+]]
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// CHECK-NEXT: ![[PACK5c_ELEMS]] = !{![[PACK5c_ARGS:[0-9]+]]
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// CHECK-SAME: ![[PACK5c_PARAMS:[0-9]+]]
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// CHECK-SAME: ![[PACK5c_THIS:[0-9]+]]}
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// CHECK-DAG: ![[PACK5c_ARGS]] = !DIDerivedType(tag: DW_TAG_member, name: "args"
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// CHECK-DAG: ![[PACK5c_PARAMS]] = !DIDerivedType(tag: DW_TAG_member, name: "params"
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// CHECK-DAG: ![[PACK5c_THIS]] = !DIDerivedType(tag: DW_TAG_member, name: "this"
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// CHECK-NOT: DW_TAG_member
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// CHECK: distinct !DICompositeType(tag: DW_TAG_class_type, scope: ![[PACK6]]
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// CHECK-SAME: elements: ![[PACK6a_ELEMS:[0-9]+]]
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// CHECK: ![[PACK6a_ELEMS]] = !{![[PACK6a_THIS:[0-9]+]]
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// CHECK-SAME: ![[PACK6a_ARGS:[0-9]+]]
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// CHECK-SAME: ![[PACK6a_ARGS]]
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// CHECK-SAME: ![[PACK6a_PARAMS:[0-9]+]]
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// CHECK-SAME: ![[PACK6a_PARAMS]]
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// CHECK-DAG: ![[PACK6a_THIS]] = !DIDerivedType(tag: DW_TAG_member, name: "this"
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// CHECK-DAG: ![[PACK6a_ARGS]] = !DIDerivedType(tag: DW_TAG_member, name: "args"
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// CHECK-DAG: ![[PACK6a_PARAMS]] = !DIDerivedType(tag: DW_TAG_member, name: "params"
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// CHECK-NOT: DW_TAG_member
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// CHECK: distinct !DICompositeType(tag: DW_TAG_class_type, scope: ![[PACK6]]
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// CHECK-SAME: elements: ![[PACK6b_ELEMS:[0-9]+]]
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// CHECK: ![[PACK6b_ELEMS]] = !{![[PACK6b_ARGS:[0-9]+]]
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// CHECK-SAME: ![[PACK6b_ARGS]]
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// CHECK-SAME: ![[PACK6b_THIS:[0-9]+]]
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// CHECK-SAME: ![[PACK6b_PARAMS:[0-9]+]]
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// CHECK-SAME: ![[PACK6b_PARAMS]]}
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// CHECK-DAG: ![[PACK6b_ARGS]] = !DIDerivedType(tag: DW_TAG_member, name: "args"
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// CHECK-DAG: ![[PACK6b_THIS]] = !DIDerivedType(tag: DW_TAG_member, name: "this"
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// CHECK-DAG: ![[PACK6b_PARAMS]] = !DIDerivedType(tag: DW_TAG_member, name: "params"
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// CHECK-NOT: DW_TAG_member
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// CHECK: distinct !DICompositeType(tag: DW_TAG_class_type, scope: ![[PACK6]]
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// CHECK-SAME: elements: ![[PACK6c_ELEMS:[0-9]+]]
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// CHECK: ![[PACK6c_ELEMS]] = !{![[PACK6c_ARGS:[0-9]+]]
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// CHECK-SAME: ![[PACK6c_ARGS]]
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// CHECK-SAME: ![[PACK6c_PARAMS:[0-9]+]]
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// CHECK-SAME: ![[PACK6c_PARAMS]]
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// CHECK-SAME: ![[PACK6c_THIS:[0-9]+]]}
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// CHECK-DAG: ![[PACK6c_ARGS]] = !DIDerivedType(tag: DW_TAG_member, name: "args"
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// CHECK-DAG: ![[PACK6c_PARAMS]] = !DIDerivedType(tag: DW_TAG_member, name: "params"
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// CHECK-DAG: ![[PACK6c_THIS]] = !DIDerivedType(tag: DW_TAG_member, name: "this"
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// CHECK-NOT: DW_TAG_member
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template<typename... Args>
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auto capture_binding_and_param_pack(Args... args) {
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struct C { int x = 2; int y = 3; };
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auto [x, ...e] = C();
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return [&, args..., x, ...params = args,
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...es = e] {
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return e...[0] + es...[0];
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}();
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}
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// CHECK: distinct !DICompositeType(tag: DW_TAG_structure_type, name: "C"
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// CHECK: distinct !DICompositeType(tag: DW_TAG_class_type, scope: ![[PACK7]]
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// CHECK-SAME: elements: ![[PACK7_ELEMS:[0-9]+]]
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// CHECK: ![[PACK7_ELEMS]] = !{![[PACK7_ARGS:[0-9]+]]
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// CHECK-SAME: ![[PACK7_ARGS]]
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// CHECK-SAME: ![[PACK7_X:[0-9]+]]
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// CHECK-SAME: ![[PACK7_PARAMS:[0-9]+]]
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// CHECK-SAME: ![[PACK7_PARAMS]]
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// CHECK-SAME: ![[PACK7_ES:[0-9]+]]
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// CHECK-SAME: ![[PACK7_E:[0-9]+]]}
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// CHECK-DAG: ![[PACK7_ARGS]] = !DIDerivedType(tag: DW_TAG_member, name: "args"
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// CHECK-DAG: ![[PACK7_X]] = !DIDerivedType(tag: DW_TAG_member, name: "x"
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// CHECK-DAG: ![[PACK7_PARAMS]] = !DIDerivedType(tag: DW_TAG_member, name: "params"
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// CHECK-DAG: ![[PACK7_ES]] = !DIDerivedType(tag: DW_TAG_member, name: "es"
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// CHECK-DAG: ![[PACK7_E]] = !DIDerivedType(tag: DW_TAG_member, name: "e"
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// CHECK-NOT: DW_TAG_member
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int main() {
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return capture_pack(1)
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+ capture_pack(1, 2)
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+ capture_pack_and_locals(1, 2)
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+ capture_pack_and_locals(1, 2, 3)
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+ f.capture_pack_and_this(1)
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+ f.capture_pack_and_this(1, 2)
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+ capture_binding_and_param_pack(1, 2);
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}

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