1; RUN: llc -filetype=obj < %s | llvm-dwarfdump -v -debug-info - | FileCheck %s 2; RUN: llc --try-experimental-debuginfo-iterators -filetype=obj < %s | llvm-dwarfdump -v -debug-info - | FileCheck %s 3 4; CHECK: DW_TAG_variable 5; CHECK-NEXT: DW_AT_const_value [DW_FORM_udata] (0) 6; CHECK-NEXT: DW_AT_name {{.*}}"a" 7; 8; ModuleID = 'union.c' 9; generated at -O1 from: 10; union mfi_evt { 11; struct { 12; int reserved; 13; } members; 14; } mfi_aen_setup() { 15; union mfi_evt a; 16; a.members.reserved = 0; 17; } 18target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128" 19target triple = "x86_64-apple-macosx10.10.0" 20 21%union.mfi_evt = type { %struct.anon } 22%struct.anon = type { i32 } 23 24; Function Attrs: nounwind readnone ssp uwtable 25define i32 @mfi_aen_setup() #0 !dbg !4 { 26entry: 27 tail call void @llvm.dbg.declare(metadata ptr undef, metadata !16, metadata !21), !dbg !22 28 tail call void @llvm.dbg.value(metadata i32 0, metadata !16, metadata !21), !dbg !22 29 ret i32 undef, !dbg !23 30} 31 32; Function Attrs: nounwind readnone 33declare void @llvm.dbg.declare(metadata, metadata, metadata) #1 34 35; Function Attrs: nounwind readnone 36declare void @llvm.dbg.value(metadata, metadata, metadata) #1 37 38attributes #0 = { nounwind readnone ssp uwtable } 39attributes #1 = { nounwind readnone } 40 41!llvm.dbg.cu = !{!0} 42!llvm.module.flags = !{!17, !18, !19} 43!llvm.ident = !{!20} 44 45!0 = distinct !DICompileUnit(language: DW_LANG_C99, producer: "clang version 3.7.0 (trunk 226915) (llvm/trunk 226905)", isOptimized: true, emissionKind: FullDebug, file: !1, enums: !2, retainedTypes: !2, globals: !2, imports: !2) 46!1 = !DIFile(filename: "union.c", directory: "") 47!2 = !{} 48!4 = distinct !DISubprogram(name: "mfi_aen_setup", line: 5, isLocal: false, isDefinition: true, isOptimized: true, unit: !0, scopeLine: 5, file: !1, scope: !5, type: !6, retainedNodes: !15) 49!5 = !DIFile(filename: "union.c", directory: "") 50!6 = !DISubroutineType(types: !7) 51!7 = !{!8} 52!8 = !DICompositeType(tag: DW_TAG_union_type, name: "mfi_evt", line: 1, size: 32, align: 32, file: !1, elements: !9) 53!9 = !{!10} 54!10 = !DIDerivedType(tag: DW_TAG_member, name: "members", line: 4, size: 32, align: 32, file: !1, scope: !8, baseType: !11) 55!11 = !DICompositeType(tag: DW_TAG_structure_type, line: 2, size: 32, align: 32, file: !1, scope: !8, elements: !12) 56!12 = !{!13} 57!13 = !DIDerivedType(tag: DW_TAG_member, name: "reserved", line: 3, size: 32, align: 32, file: !1, scope: !11, baseType: !14) 58!14 = !DIBasicType(tag: DW_TAG_base_type, name: "int", size: 32, align: 32, encoding: DW_ATE_signed) 59!15 = !{!16} 60!16 = !DILocalVariable(name: "a", line: 6, scope: !4, file: !5, type: !8) 61!17 = !{i32 2, !"Dwarf Version", i32 2} 62!18 = !{i32 2, !"Debug Info Version", i32 3} 63!19 = !{i32 1, !"PIC Level", i32 2} 64!20 = !{!"clang version 3.7.0 (trunk 226915) (llvm/trunk 226905)"} 65!21 = !DIExpression() 66!22 = !DILocation(line: 6, column: 17, scope: !4) 67!23 = !DILocation(line: 8, column: 1, scope: !4) 68