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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
35 lines
1.2 KiB
LLVM
35 lines
1.2 KiB
LLVM
; RUN: %llc_dwarf -split-dwarf-file=foo.dwo %s -filetype=obj -o - | llvm-dwarfdump -debug-info - | FileCheck %s
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; DW_AT_LLVM_sysroot goes into the .dwo, not in the skeleton.
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; CHECK: DW_TAG_skeleton_unit
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; CHECK-NOT: DW_AT_LLVM_sysroot
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; CHECK: DW_TAG_compile_unit
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; CHECK-NOT: DW_TAG
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; CHECK: DW_AT_LLVM_sysroot ("/opt/clang-root")
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target triple = "x86_64-pc-linux"
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declare void @_Z2f1v()
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; Function Attrs: noinline norecurse uwtable
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define i32 @main() !dbg !9 {
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entry:
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ret i32 0, !dbg !18
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}
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!llvm.dbg.cu = !{!0}
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!llvm.module.flags = !{!6, !7, !8}
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!0 = distinct !DICompileUnit(language: DW_LANG_C, file: !1, emissionKind: FullDebug, enums: !2, sysroot: "/opt/clang-root")
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!1 = !DIFile(filename: "a.c", directory: "/")
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!2 = !{}
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!6 = !{i32 2, !"Dwarf Version", i32 5}
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!7 = !{i32 2, !"Debug Info Version", i32 3}
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!8 = !{i32 1, !"wchar_size", i32 4}
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!9 = distinct !DISubprogram(name: "main", scope: !1, file: !1, line: 2, type: !10, isLocal: false, isDefinition: true, scopeLine: 2, flags: DIFlagPrototyped, isOptimized: false, unit: !0, retainedNodes: !2)
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!10 = !DISubroutineType(types: !11)
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!11 = !{!12}
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!12 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
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!18 = !DILocation(line: 4, column: 1, scope: !9)
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