[clang] [clang][DebugInfo][test] Add tests for lambda capture packs (PR #160705)

[Adrian Prantl via cfe-commits]

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@@ -0,0 +1,196 @@
+// RUN: %clang_cc1 -triple %itanium_abi_triple -emit-llvm \
+// RUN:   -debug-info-kind=standalone -std=c++26 %s -o - | FileCheck %s
+
+
+// CHECK: ![[PACK1:[0-9]+]] = distinct !DISubprogram(name: "capture_pack<int>"
+// CHECK: ![[PACK2:[0-9]+]] = distinct !DISubprogram(name: "capture_pack<int, int>"
+// CHECK: ![[PACK3:[0-9]+]] = distinct !DISubprogram(name: "capture_pack_and_locals<int>"
+// CHECK: ![[PACK4:[0-9]+]] = distinct !DISubprogram(name: "capture_pack_and_locals<int, int>"
+// CHECK: ![[PACK5:[0-9]+]] = distinct !DISubprogram(name: "capture_pack_and_this<int>"
+// CHECK: ![[PACK6:[0-9]+]] = distinct !DISubprogram(name: "capture_pack_and_this<int, int>"
+// CHECK: ![[PACK7:[0-9]+]] = distinct !DISubprogram(name: "capture_binding_and_param_pack<int, int>"
+
+template<typename... Args>
+auto capture_pack(Args... args) {
+  return [args..., ...params = args] {
+    return 0;
+  }();
+}
+
+// CHECK:      distinct !DICompositeType(tag: DW_TAG_class_type, scope: ![[PACK1]]
+// CHECK-SAME:                           elements: ![[PACK1_ELEMS:[0-9]+]]
+// CHECK-NEXT: ![[PACK1_ELEMS]] = !{![[PACK1_ARGS:[0-9]+]], ![[PACK1_PARAMS:[0-9]+]]}
+// CHECK-NEXT: ![[PACK1_ARGS]] = !DIDerivedType(tag: DW_TAG_member, name: "args"
+// CHECK-NEXT: ![[PACK1_PARAMS]] = !DIDerivedType(tag: DW_TAG_member, name: "params"
+// CHECK-NOT:  DW_TAG_member
+
+// CHECK:      distinct !DICompositeType(tag: DW_TAG_class_type, scope: ![[PACK2]]
+// CHECK-SAME:                           elements: ![[PACK2_ELEMS:[0-9]+]]
+// CHECK-NEXT: ![[PACK2_ELEMS]] = !{![[PACK2_ARGS:[0-9]+]]
+// CHECK-SAME:                      ![[PACK2_ARGS]]
+// CHECK-SAME:                      ![[PACK2_PARAMS:[0-9]+]]
+// CHECK-SAME:                      ![[PACK2_PARAMS]]}
+// CHECK-NEXT: ![[PACK2_ARGS]] = !DIDerivedType(tag: DW_TAG_member, name: "args"
+// CHECK-NEXT: ![[PACK2_PARAMS]] = !DIDerivedType(tag: DW_TAG_member, name: "params"
+// CHECK-NOT:  DW_TAG_member
+
+template<typename... Args>
+auto capture_pack_and_locals(int x, Args... args) {
+  int w = 0;
+  return [=, &args..., &x, ...params = args] {
+    return w;
+  }();
+}
+
+// CHECK:      distinct !DICompositeType(tag: DW_TAG_class_type, scope: ![[PACK3]]
+// CHECK-SAME:                           elements: ![[PACK3_ELEMS:[0-9]+]]
+// CHECK-NEXT: ![[PACK3_ELEMS]] = !{![[PACK3_ARGS:[0-9]+]]
+// CHECK-SAME:                      ![[PACK3_X:[0-9]+]]
+// CHECK-SAME:                      ![[PACK3_PARAMS:[0-9]+]]
+// CHECK-SAME:                      ![[PACK3_W:[0-9]+]]}
+// CHECK-NEXT: ![[PACK3_ARGS]] = !DIDerivedType(tag: DW_TAG_member, name: "args"
+// CHECK-NEXT: !DIDerivedType(tag: DW_TAG_reference_type
+// CHECK-NEXT: ![[PACK3_X]] = !DIDerivedType(tag: DW_TAG_member, name: "x"
+// CHECK-NEXT: ![[PACK3_PARAMS]] = !DIDerivedType(tag: DW_TAG_member, name: "params"
+// CHECK-NEXT: ![[PACK3_W]] = !DIDerivedType(tag: DW_TAG_member, name: "w"
+// CHECK-NOT:  DW_TAG_member
+
+// CHECK:      distinct !DICompositeType(tag: DW_TAG_class_type, scope: ![[PACK4]]
+// CHECK-SAME:                           elements: ![[PACK4_ELEMS:[0-9]+]]
+// CHECK-NEXT: ![[PACK4_ELEMS]] = !{![[PACK4_ARGS:[0-9]+]]
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adrian-prantl wrote:

same here

https://github.com/llvm/llvm-project/pull/160705