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3363ed7b0a
[this re-applies c0176916a4824812d25a5a22c4ff7c95857b0cd6 with the correct commit message and phabricator link] This addresses point 1 of PR44213. https://bugs.llvm.org/show_bug.cgi?id=44213 The DW_AT_LLVM_sysroot attribute is used for Clang module debug info, to allow LLDB to import a Clang module from source. Currently it is part of each DW_TAG_module, however, it is the same for all modules in a compile unit. It is more efficient and less ambiguous to store it once in the DW_TAG_compile_unit. This should have no effect on DWARF consumers other than LLDB. Differential Revision: https://reviews.llvm.org/D71732
34 lines
1.3 KiB
LLVM
34 lines
1.3 KiB
LLVM
source_filename = "test/DebugInfo/X86/DIModuleContext.ll"
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target triple = "x86_64-apple-macosx"
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; RUN: %llc_dwarf %s -o - -filetype=obj \
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; RUN: | llvm-dwarfdump -debug-info - | FileCheck %s
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; CHECK: DW_TAG_module
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; CHECK-NOT: NULL
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; CHECK: DW_TAG_structure_type
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; Hand-crafted based on
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; struct s;
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; struct s *s;
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%struct.s = type opaque
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@i = common global %struct.s* null, align 8, !dbg !0
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!llvm.dbg.cu = !{!2}
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!llvm.module.flags = !{!11, !12}
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!0 = !DIGlobalVariableExpression(var: !1, expr: !DIExpression())
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!1 = !DIGlobalVariable(name: "s", scope: !2, file: !3, line: 2, type: !9, isLocal: false, isDefinition: true)
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!2 = distinct !DICompileUnit(language: DW_LANG_C99, file: !3, producer: "clang", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug, enums: !4, globals: !5, imports: !6)
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!3 = !DIFile(filename: "test.c", directory: "/")
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!4 = !{}
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!5 = !{!0}
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!6 = !{!7}
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!7 = !DIImportedEntity(tag: DW_TAG_imported_declaration, scope: !2, entity: !8, file: !3, line: 11)
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!8 = !DIModule(scope: null, name: "Module", includePath: ".")
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!9 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !10, size: 64, align: 64)
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!10 = !DICompositeType(tag: DW_TAG_structure_type, name: "s", scope: !8, file: !3, line: 1, flags: DIFlagFwdDecl)
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!11 = !{i32 2, !"Dwarf Version", i32 2}
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!12 = !{i32 2, !"Debug Info Version", i32 3}
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