1 files changed, 69 insertions, 0 deletions
diff --git a/llvm/test/DebugInfo/Generic/structor-declaration-linkage-names.ll b/llvm/test/DebugInfo/Generic/structor-declaration-linkage-names.ll
new file mode 100644
index 000000000000..1096cde5f414
--- /dev/null
+++ b/llvm/test/DebugInfo/Generic/structor-declaration-linkage-names.ll
@@ -0,0 +1,69 @@
+; REQUIRES: aarch64-registered-target
+; RUN: %llc_dwarf < %s -filetype=obj | llvm-dwarfdump -debug-info - | FileCheck %s
+
+; Make sure we attach DW_AT_linkage_name on function declarations but only
+; attach it on definitions if the value is different than on the declaration.
+
+target triple = "arm64-apple-macosx"
+
+define void @_Z11SameLinkagev() !dbg !4 {
+entry:
+  ret void
+}
+
+; CHECK:     DW_AT_linkage_name ("_Z11SameLinkagev")
+; CHECK:     DW_AT_declaration (true)
+; CHECK-NOT: DW_AT_linkage_name ("_Z11SameLinkagev")
+
+define void @_Z11DiffLinkagev() !dbg !8 {
+entry:
+  ret void
+}
+
+; CHECK: DW_AT_linkage_name ("SomeName")
+; CHECK: DW_AT_declaration (true)
+; CHECK: DW_AT_linkage_name ("_Z11DiffLinkagev")
+
+define void @_Z15EmptyDefLinkagev() !dbg !10 {
+entry:
+  ret void
+}
+
+; CHECK:     DW_AT_linkage_name ("_Z15EmptyDefLinkagev")
+; CHECK:     DW_AT_declaration (true)
+; CHECK-NOT: DW_AT_linkage_name
+
+define void @_Z16EmptyDeclLinkagev() !dbg !12 {
+entry:
+  ret void
+}
+
+; CHECK: DW_AT_declaration (true)
+; CHECK: DW_AT_linkage_name ("_Z16EmptyDeclLinkagev")
+
+define void @_Z13EmptyLinkagesv() !dbg !14 {
+entry:
+  ret void
+}
+
+; CHECK-NOT: DW_AT_linkage_name
+
+!llvm.dbg.cu = !{!0}
+!llvm.module.flags = !{!2, !3}
+
+!0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus_14, file: !1, producer: "clang", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug, splitDebugInlining: false, nameTableKind: Apple, sysroot: "/")
+!1 = !DIFile(filename: "foo.cpp", directory: "/tmp")
+!2 = !{i32 7, !"Dwarf Version", i32 5}
+!3 = !{i32 2, !"Debug Info Version", i32 3}
+!4 = distinct !DISubprogram(name: "SameLinkage", linkageName: "_Z11SameLinkagev", scope: !1, file: !1, line: 3, type: !5, scopeLine: 3, flags: DIFlagPrototyped, spFlags: DISPFlagDefinition, unit: !0, declaration: !7)
+!5 = !DISubroutineType(types: !6)
+!6 = !{null}
+!7 = !DISubprogram(name: "SameLinkage", linkageName: "_Z11SameLinkagev", scope: !1, file: !1, line: 3, type: !5, scopeLine: 3, flags: DIFlagPrototyped, spFlags: 0)
+!8 = distinct !DISubprogram(name: "DiffLinkage", linkageName: "_Z11DiffLinkagev", scope: !1, file: !1, line: 5, type: !5, scopeLine: 5, flags: DIFlagPrototyped, spFlags: DISPFlagDefinition, unit: !0, declaration: !9)
+!9 = !DISubprogram(name: "DiffLinkage", linkageName: "SomeName", scope: !1, file: !1, line: 3, type: !5, scopeLine: 3, flags: DIFlagPrototyped, spFlags: 0)
+!10 = distinct !DISubprogram(name: "EmptyDefLinkage", linkageName: "", scope: !1, file: !1, line: 5, type: !5, scopeLine: 5, flags: DIFlagPrototyped, spFlags: DISPFlagDefinition, unit: !0, declaration: !11)
+!11 = !DISubprogram(name: "EmptyDefLinkage", linkageName: "_Z15EmptyDefLinkagev", scope: !1, file: !1, line: 3, type: !5, scopeLine: 3, flags: DIFlagPrototyped, spFlags: 0)
+!12 = distinct !DISubprogram(name: "EmptyDeclLinkage", linkageName: "_Z16EmptyDeclLinkagev", scope: !1, file: !1, line: 5, type: !5, scopeLine: 5, flags: DIFlagPrototyped, spFlags: DISPFlagDefinition, unit: !0, declaration: !13)
+!13 = !DISubprogram(name: "EmptyDeclLinkage", linkageName: "", scope: !1, file: !1, line: 3, type: !5, scopeLine: 3, flags: DIFlagPrototyped, spFlags: 0)
+!14 = distinct !DISubprogram(name: "EmptyLinkages", linkageName: "", scope: !1, file: !1, line: 5, type: !5, scopeLine: 5, flags: DIFlagPrototyped, spFlags: DISPFlagDefinition, unit: !0, declaration: !15)
+!15 = !DISubprogram(name: "EmptyLinkages", linkageName: "", scope: !1, file: !1, line: 3, type: !5, scopeLine: 3, flags: DIFlagPrototyped, spFlags: 0)