1; RUN: %llc_dwarf -O0 -filetype=obj < %s > %t 2; RUN: llvm-dwarfdump -v -debug-info %t | FileCheck %s 3 4; RUN: %llc_dwarf --try-experimental-debuginfo-iterators -O0 -filetype=obj < %s > %t 5; RUN: llvm-dwarfdump -v -debug-info %t | FileCheck %s 6 7; Check for a univariant discriminated union -- that is, a variant 8; part without a discriminant and with just a single variant. 9 10; CHECK: DW_TAG_variant_part 11; CHECK-NOT: DW_AT_discr 12; CHECK: DW_TAG_variant 13; CHECK: DW_TAG_member 14; CHECK: DW_AT_type 15; CHECK: DW_AT_alignment 16; CHECK: DW_AT_data_member_location [DW_FORM_data1] (0x00) 17 18%F = type { [0 x i8], ptr, [8 x i8] } 19%"F::Nope" = type {} 20 21define internal void @_ZN2e34main17h934ff72f9a38d4bbE() unnamed_addr #0 !dbg !5 { 22start: 23 %qq = alloca %F, align 8 24 call void @llvm.dbg.declare(metadata ptr %qq, metadata !10, metadata !28), !dbg !29 25 store ptr null, ptr %qq, !dbg !29 26 ret void, !dbg !30 27} 28 29; Function Attrs: nounwind readnone 30declare void @llvm.dbg.declare(metadata, metadata, metadata) #0 31 32attributes #0 = { nounwind uwtable } 33 34!llvm.module.flags = !{!0, !1} 35!llvm.dbg.cu = !{!2} 36 37!0 = !{i32 1, !"PIE Level", i32 2} 38!1 = !{i32 2, !"Debug Info Version", i32 3} 39!2 = distinct !DICompileUnit(language: DW_LANG_Rust, file: !3, producer: "clang LLVM (rustc version 1.24.0-dev)", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug, enums: !4) 40!3 = !DIFile(filename: "e3.rs", directory: "/home/tromey/Rust") 41!4 = !{} 42!5 = distinct !DISubprogram(name: "main", linkageName: "_ZN2e34mainE", scope: !6, file: !3, line: 2, type: !8, scopeLine: 2, flags: DIFlagPrototyped, spFlags: DISPFlagLocalToUnit | DISPFlagDefinition | DISPFlagMainSubprogram, isOptimized: false, unit: !2, templateParams: !4, retainedNodes: !4) 43!6 = !DINamespace(name: "e3", scope: null) 44!7 = !DIFile(filename: "<unknown>", directory: "") 45!8 = !DISubroutineType(types: !9) 46!9 = !{null} 47!10 = !DILocalVariable(name: "qq", scope: !11, file: !3, line: 3, type: !12, align: 8) 48!11 = distinct !DILexicalBlock(scope: !5, file: !3, line: 3, column: 4) 49!12 = !DICompositeType(tag: DW_TAG_structure_type, name: "F", scope: !6, file: !7, size: 128, align: 64, elements: !13, identifier: "7ce1efff6b82281ab9ceb730566e7e20") 50!13 = !{!14} 51!14 = !DICompositeType(tag: DW_TAG_variant_part, name: "", scope: !12, file: !7, size: 128, align: 64, elements: !16, identifier: "7ce1efff6b82281ab9ceb730566e7e20") 52 53!16 = !{!17} 54!17 = !DIDerivedType(tag: DW_TAG_member, scope: !14, file: !7, baseType: !18, size: 128, align: 64) 55!18 = !DICompositeType(tag: DW_TAG_structure_type, name: "Yep", scope: !12, file: !7, size: 128, align: 64, elements: !19, identifier: "7ce1efff6b82281ab9ceb730566e7e20::Yep") 56!19 = !{!20, !22} 57!20 = !DIDerivedType(tag: DW_TAG_member, name: "__0", scope: !18, file: !7, baseType: !21, size: 8, align: 8, offset: 64) 58!21 = !DIBasicType(name: "u8", size: 8, encoding: DW_ATE_unsigned) 59!22 = !DIDerivedType(tag: DW_TAG_member, name: "__1", scope: !18, file: !7, baseType: !23, size: 64, align: 64) 60!23 = !DIDerivedType(tag: DW_TAG_pointer_type, name: "&u8", baseType: !21, size: 64, align: 64) 61 62!28 = !DIExpression() 63!29 = !DILocation(line: 3, scope: !11) 64!30 = !DILocation(line: 4, scope: !5) 65