1; RUN: %llc_dwarf -O0 -filetype=obj < %s > %t 2; RUN: llvm-dwarfdump -v -debug-info %t | FileCheck %s 3 4; Check for a variant part that has two members, one of which has a 5; discriminant value. 6 7; CHECK: DW_TAG_variant_part 8; CHECK-NOT: TAG 9; CHECK: DW_AT_discr [DW_FORM_ref4] (cu + {{0x[0-9a-fA-F]+}} => {[[OFFSET:0x[0-9a-fA-F]+]]}) 10; CHECK-NOT: TAG 11; CHECK: [[OFFSET]]: DW_TAG_member 12; CHECK: DW_AT_type 13; CHECK: DW_AT_alignment 14; CHECK: DW_AT_data_member_location [DW_FORM_data1] (0x00) 15; CHECK: DW_AT_artificial [DW_FORM_flag_present] (true) 16; CHECK: DW_TAG_variant 17; CHECK: DW_TAG_member 18; CHECK: DW_AT_type 19; CHECK: DW_AT_alignment 20; CHECK: DW_AT_data_member_location [DW_FORM_data1] (0x00) 21; CHECK: DW_TAG_variant 22; CHECK: DW_AT_discr_value [DW_FORM_data1] (0x00) 23; CHECK: DW_TAG_member 24; CHECK: DW_AT_type 25; CHECK: DW_AT_alignment 26; CHECK: DW_AT_data_member_location [DW_FORM_data1] (0x00) 27 28%F = type { [0 x i8], {}*, [8 x i8] } 29%"F::Nope" = type {} 30 31define internal void @_ZN2e34main17h934ff72f9a38d4bbE() unnamed_addr #0 !dbg !5 { 32start: 33 %qq = alloca %F, align 8 34 call void @llvm.dbg.declare(metadata %F* %qq, metadata !10, metadata !28), !dbg !29 35 %0 = bitcast %F* %qq to {}**, !dbg !29 36 store {}* null, {}** %0, !dbg !29 37 %1 = bitcast %F* %qq to %"F::Nope"*, !dbg !29 38 ret void, !dbg !30 39} 40 41; Function Attrs: nounwind readnone 42declare void @llvm.dbg.declare(metadata, metadata, metadata) #0 43 44attributes #0 = { nounwind uwtable } 45 46!llvm.module.flags = !{!0, !1} 47!llvm.dbg.cu = !{!2} 48 49!0 = !{i32 1, !"PIE Level", i32 2} 50!1 = !{i32 2, !"Debug Info Version", i32 3} 51!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) 52!3 = !DIFile(filename: "e3.rs", directory: "/home/tromey/Rust") 53!4 = !{} 54!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) 55!6 = !DINamespace(name: "e3", scope: null) 56!7 = !DIFile(filename: "<unknown>", directory: "") 57!8 = !DISubroutineType(types: !9) 58!9 = !{null} 59!10 = !DILocalVariable(name: "qq", scope: !11, file: !3, line: 3, type: !12, align: 8) 60!11 = distinct !DILexicalBlock(scope: !5, file: !3, line: 3, column: 4) 61!12 = !DICompositeType(tag: DW_TAG_structure_type, name: "F", scope: !6, file: !7, size: 128, align: 64, elements: !13, identifier: "7ce1efff6b82281ab9ceb730566e7e20") 62!13 = !{!14} 63!14 = !DICompositeType(tag: DW_TAG_variant_part, name: "", scope: !12, file: !7, size: 128, align: 64, elements: !16, identifier: "7ce1efff6b82281ab9ceb730566e7e20", discriminator: !15) 64!15 = !DIDerivedType(tag: DW_TAG_member, scope: !14, file: !7, baseType: !27, size: 64, align: 64, flags: DIFlagArtificial) 65!16 = !{!17, !24} 66!17 = !DIDerivedType(tag: DW_TAG_member, scope: !14, file: !7, baseType: !18, size: 128, align: 64) 67!18 = !DICompositeType(tag: DW_TAG_structure_type, name: "Yep", scope: !12, file: !7, size: 128, align: 64, elements: !19, identifier: "7ce1efff6b82281ab9ceb730566e7e20::Yep") 68!19 = !{!20, !22} 69!20 = !DIDerivedType(tag: DW_TAG_member, name: "__0", scope: !18, file: !7, baseType: !21, size: 8, align: 8, offset: 64) 70!21 = !DIBasicType(name: "u8", size: 8, encoding: DW_ATE_unsigned) 71!22 = !DIDerivedType(tag: DW_TAG_member, name: "__1", scope: !18, file: !7, baseType: !23, size: 64, align: 64) 72!23 = !DIDerivedType(tag: DW_TAG_pointer_type, name: "&u8", baseType: !21, size: 64, align: 64) 73!24 = !DIDerivedType(tag: DW_TAG_member, scope: !14, file: !7, baseType: !25, size: 128, align: 64, extraData: i64 0) 74!25 = !DICompositeType(tag: DW_TAG_structure_type, name: "Nope", scope: !12, file: !7, size: 128, align: 64, elements: !4, identifier: "7ce1efff6b82281ab9ceb730566e7e20::Nope") 75!27 = !DIBasicType(name: "u64", size: 64, encoding: DW_ATE_unsigned) 76!28 = !DIExpression() 77!29 = !DILocation(line: 3, scope: !11) 78!30 = !DILocation(line: 4, scope: !5) 79