| ; Check that debug info for nested types is generated correctly. |
| ; With full LTO we may end up in several compilation units sharing |
| ; single object file. In such case it's possible that nested type DIE |
| ; is created on behalf of CU#1 and parent type DIE is created on |
| ; behalf of CU#2. In such case we may end up with broken source line |
| ; attributes, because file ids don't coincide in CU#1 and CU#2 |
| |
| ; Sources used to generate this sample (C++) |
| ; // File: inc1.h |
| ; struct S { |
| ; struct Nested {}; |
| ; typedef int NestedTypedef; |
| ; }; |
| ; |
| ; // File inc2.h |
| ; extern int x; |
| ; int x; |
| ; |
| ; // File foo.cpp |
| ; #include "inc1.h" |
| ; S s; |
| ; |
| ; // File bar.cpp |
| ; #include "inc1.h" |
| ; #include "inc2.h" |
| ; void f3() { |
| ; S::Nested n; |
| ; S::NestedTypedef n2; |
| ; } |
| |
| ; RUN: llc -filetype=obj %s -o %t |
| ; RUN: llvm-dwarfdump %t | FileCheck %s |
| |
| ; CHECK: DW_AT_name ("Nested") |
| ; CHECK-NEXT: DW_AT_byte_size (0x01) |
| ; CHECK-NEXT: DW_AT_decl_file ("{{.*}}inc1.h") |
| ; CHECK-NEXT: DW_AT_decl_line (2) |
| |
| ; CHECK: DW_AT_name ("NestedTypedef") |
| ; CHECK-NEXT: DW_AT_decl_file ("{{.*}}inc1.h") |
| ; CHECK-NEXT: DW_AT_decl_line (3) |
| |
| source_filename = "llvm-link" |
| target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128" |
| target triple = "x86_64-unknown-linux-gnu" |
| |
| %struct.S = type { i8 } |
| |
| @s = dso_local global %struct.S zeroinitializer, align 1, !dbg !0 |
| @x = dso_local global i32 0, align 4, !dbg !8 |
| |
| ; Function Attrs: noinline nounwind optnone uwtable |
| define dso_local void @_Z2f3v() !dbg !19 { |
| entry: |
| %n = alloca %struct.S, align 1 |
| %n2 = alloca i32, align 4 |
| call void @llvm.dbg.declare(metadata ptr %n, metadata !22, metadata !DIExpression()), !dbg !24 |
| call void @llvm.dbg.declare(metadata ptr %n2, metadata !25, metadata !DIExpression()), !dbg !27 |
| ret void, !dbg !28 |
| } |
| |
| ; Function Attrs: nounwind readnone speculatable |
| declare void @llvm.dbg.declare(metadata, metadata, metadata) |
| |
| !llvm.dbg.cu = !{!2, !10} |
| !llvm.ident = !{!15, !15} |
| !llvm.module.flags = !{!16, !17, !18} |
| |
| !0 = !DIGlobalVariableExpression(var: !1, expr: !DIExpression()) |
| !1 = distinct !DIGlobalVariable(name: "s", scope: !2, file: !3, line: 2, type: !6, isLocal: false, isDefinition: true) |
| !2 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, file: !3, producer: "clang version 9.0.0 (trunk 354767)", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug, enums: !4, globals: !5, nameTableKind: None) |
| !3 = !DIFile(filename: "foo.cpp", directory: "/home/evgeny/work/cpp_lexer/sample3") |
| !4 = !{} |
| !5 = !{!0} |
| !6 = distinct !DICompositeType(tag: DW_TAG_structure_type, name: "S", file: !7, line: 1, size: 8, flags: DIFlagTypePassByValue, elements: !4, identifier: "_ZTS1S") |
| !7 = !DIFile(filename: "./inc1.h", directory: "/home/evgeny/work/cpp_lexer/sample3") |
| !8 = !DIGlobalVariableExpression(var: !9, expr: !DIExpression()) |
| !9 = distinct !DIGlobalVariable(name: "x", scope: !10, file: !13, line: 2, type: !14, isLocal: false, isDefinition: true) |
| !10 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, file: !11, producer: "clang version 9.0.0 (trunk 354767)", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug, enums: !4, globals: !12, nameTableKind: None) |
| !11 = !DIFile(filename: "bar.cpp", directory: "/home/evgeny/work/cpp_lexer/sample3") |
| !12 = !{!8} |
| !13 = !DIFile(filename: "./inc2.h", directory: "/home/evgeny/work/cpp_lexer/sample3") |
| !14 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed) |
| !15 = !{!"clang version 9.0.0 (trunk 354767)"} |
| !16 = !{i32 2, !"Dwarf Version", i32 4} |
| !17 = !{i32 2, !"Debug Info Version", i32 3} |
| !18 = !{i32 1, !"wchar_size", i32 4} |
| !19 = distinct !DISubprogram(name: "f3", linkageName: "_Z2f3v", scope: !11, file: !11, line: 3, type: !20, scopeLine: 3, flags: DIFlagPrototyped, spFlags: DISPFlagDefinition, unit: !10, retainedNodes: !4) |
| !20 = !DISubroutineType(types: !21) |
| !21 = !{null} |
| !22 = !DILocalVariable(name: "n", scope: !19, file: !11, line: 4, type: !23) |
| !23 = distinct !DICompositeType(tag: DW_TAG_structure_type, name: "Nested", scope: !6, file: !7, line: 2, size: 8, flags: DIFlagTypePassByValue, elements: !4, identifier: "_ZTSN1S6NestedE") |
| !24 = !DILocation(line: 4, column: 13, scope: !19) |
| !25 = !DILocalVariable(name: "n2", scope: !19, file: !11, line: 5, type: !26) |
| !26 = !DIDerivedType(tag: DW_TAG_typedef, name: "NestedTypedef", scope: !6, file: !7, line: 3, baseType: !14) |
| !27 = !DILocation(line: 5, column: 20, scope: !19) |
| !28 = !DILocation(line: 6, column: 1, scope: !19) |
| |